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Author SHA1 Message Date
Kees Cook d8dfa59f5a bus: imx-weim: Remove VLA usage 
In the quest to remove all stack VLA usage from the kernel[1], this
switches to using a maximum size and adds a sanity check.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shawn Guo <shawnguo@kernel.org>
 2018-08-13 13:40:52 -07:00
Olof Johansson 92f06c384b Allwinner drivers changes for 4.19 
There's been work for this release cycles in both the SRAM controller
 driver in order to support more SoCs, as part of our VPU work, but also to
 enable the EMAC on the A64 (that needs to poke at registers within the same
 register space).
 
 Some work has been needed too to represent the bus to the display engine
 controllers that all need an SRAM to be mapped to the CPU to be able to
 access those controllers' registers.
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Merge tag 'sunxi-drivers-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/drivers

Allwinner drivers changes for 4.19

There's been work for this release cycles in both the SRAM controller
driver in order to support more SoCs, as part of our VPU work, but also to
enable the EMAC on the A64 (that needs to poke at registers within the same
register space).

Some work has been needed too to represent the bus to the display engine
controllers that all need an SRAM to be mapped to the CPU to be able to
access those controllers' registers.

* tag 'sunxi-drivers-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  soc: sunxi: Add the A13, A23 and H3 system control compatibles
  drivers: soc: sunxi: Add support for the C1 SRAM region
  dt-bindings: sram: sunxi: Populate valid sections compatibles
  dt-bindings: sram: sunxi: Add A13, A20, A23 and H3 dedicated bindings
  soc: sunxi: sram: Add dt match for the A10 system-control compatible
  dt-bindings: sram: sunxi: Introduce new A10 binding for system-control
  bus: add bus driver for accessing Allwinner A64 DE2
  dt-bindings: add binding for the Allwinner A64 DE2 bus
  soc: sunxi: sram: Add updated compatible string for A64 system control
  dt-bindings: sram: Rename A64 SRAM controller compatible
  soc: sunxi: export a regmap for EMAC clock reg on A64

Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-07-26 00:09:43 -07:00
Faiz Abbas 596e795569 bus: ti-sysc: Add support for software reset 
Add support for the software reset of a target interconnect
module using its sysconfig and sysstatus registers.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
[tony@atomide.com: updated to check if sysconfig exists]
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-07-09 22:31:38 -07:00
Faiz Abbas 7f35e63dbf bus: ti-sysc: Add support for using ti-sysc for MCAN on dra76x 
The dra76x MCAN generic interconnect module has a its own
format for the bits in the control registers.

Therefore add a new module type, new regbits and new capabilities
specific to the MCAN module.

Acked-by: Rob Herring <robh@kernel.org>
CC: Tony Lindgren <tony@atomide.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-07-09 22:31:27 -07:00
Kees Cook 207490517c bus: ti-sysc: Use 2-factor allocator arguments 
This adjusts the allocator calls to use 2-factor argument call style, as
done treewide already for improved defense against allocation overflows.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-07-02 04:24:44 -07:00
Icenowy Zheng 8818e865aa
bus: add bus driver for accessing Allwinner A64 DE2 
The "Display Engine 2.0" (usually called DE2) on the Allwinner A64 SoC
is different from the ones on other Allwinner SoCs. It requires a SRAM
region to be claimed, otherwise all DE2 subblocks won't be accessible.

Add a bus driver for the Allwinner A64 DE2 part which claims the SRAM
region when probing.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
 2018-06-28 10:20:19 +02:00
Linus Torvalds b08fc5277a - Error path bug fix for overflow tests (Dan) 
- Additional struct_size() conversions (Matthew, Kees)
 - Explicitly reported overflow fixes (Silvio, Kees)
 - Add missing kvcalloc() function (Kees)
 - Treewide conversions of allocators to use either 2-factor argument
   variant when available, or array_size() and array3_size() as needed (Kees)
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Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull more overflow updates from Kees Cook:
 "The rest of the overflow changes for v4.18-rc1.

  This includes the explicit overflow fixes from Silvio, further
  struct_size() conversions from Matthew, and a bug fix from Dan.

  But the bulk of it is the treewide conversions to use either the
  2-factor argument allocators (e.g. kmalloc(a * b, ...) into
  kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a *
  b) into vmalloc(array_size(a, b)).

  Coccinelle was fighting me on several fronts, so I've done a bunch of
  manual whitespace updates in the patches as well.

  Summary:

   - Error path bug fix for overflow tests (Dan)

   - Additional struct_size() conversions (Matthew, Kees)

   - Explicitly reported overflow fixes (Silvio, Kees)

   - Add missing kvcalloc() function (Kees)

   - Treewide conversions of allocators to use either 2-factor argument
     variant when available, or array_size() and array3_size() as needed
     (Kees)"

* tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
  treewide: Use array_size in f2fs_kvzalloc()
  treewide: Use array_size() in f2fs_kzalloc()
  treewide: Use array_size() in f2fs_kmalloc()
  treewide: Use array_size() in sock_kmalloc()
  treewide: Use array_size() in kvzalloc_node()
  treewide: Use array_size() in vzalloc_node()
  treewide: Use array_size() in vzalloc()
  treewide: Use array_size() in vmalloc()
  treewide: devm_kzalloc() -> devm_kcalloc()
  treewide: devm_kmalloc() -> devm_kmalloc_array()
  treewide: kvzalloc() -> kvcalloc()
  treewide: kvmalloc() -> kvmalloc_array()
  treewide: kzalloc_node() -> kcalloc_node()
  treewide: kzalloc() -> kcalloc()
  treewide: kmalloc() -> kmalloc_array()
  mm: Introduce kvcalloc()
  video: uvesafb: Fix integer overflow in allocation
  UBIFS: Fix potential integer overflow in allocation
  leds: Use struct_size() in allocation
  Convert intel uncore to struct_size
  ...
 2018-06-12 18:28:00 -07:00
Kees Cook a86854d0c5 treewide: devm_kzalloc() -> devm_kcalloc() 
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:

        devm_kzalloc(handle, a * b, gfp)

with:
        devm_kcalloc(handle, a * b, gfp)

as well as handling cases of:

        devm_kzalloc(handle, a * b * c, gfp)

with:

        devm_kzalloc(handle, array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        devm_kcalloc(handle, array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        devm_kzalloc(handle, 4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@

(
  devm_kzalloc(HANDLE,
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  devm_kzalloc(HANDLE,
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@

- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@

(
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
  devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * E2
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Linus Torvalds 32bcbf8b6d ARM: SoC driver updates 
This branch contains platform-related driver updates for ARM and ARM64.
 
 Highlights:
  - ARM SCMI (System Control & Management Interface) driver cleanups
  - Hisilicon support for LPC bus w/ ACPI
  - Reset driver updates for several platforms: Uniphier,
  - Rockchip power domain bindings and hardware descriptions for several SoCs.
  - Tegra memory controller reset improvements
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "This contains platform-related driver updates for ARM and ARM64.

  Highlights:

   - ARM SCMI (System Control & Management Interface) driver cleanups

   - Hisilicon support for LPC bus w/ ACPI

   - Reset driver updates for several platforms: Uniphier,

   - Rockchip power domain bindings and hardware descriptions for
     several SoCs.

   - Tegra memory controller reset improvements"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (59 commits)
  ARM: tegra: fix compile-testing PCI host driver
  soc: rockchip: power-domain: add power domain support for px30
  dt-bindings: power: add binding for px30 power domains
  dt-bindings: power: add PX30 SoCs header for power-domain
  soc: rockchip: power-domain: add power domain support for rk3228
  dt-bindings: power: add binding for rk3228 power domains
  dt-bindings: power: add RK3228 SoCs header for power-domain
  soc: rockchip: power-domain: add power domain support for rk3128
  dt-bindings: power: add binding for rk3128 power domains
  dt-bindings: power: add RK3128 SoCs header for power-domain
  soc: rockchip: power-domain: add power domain support for rk3036
  dt-bindings: power: add binding for rk3036 power domains
  dt-bindings: power: add RK3036 SoCs header for power-domain
  dt-bindings: memory: tegra: Remove Tegra114 SATA and AFI reset definitions
  memory: tegra: Remove Tegra114 SATA and AFI reset definitions
  memory: tegra: Register SMMU after MC driver became ready
  soc: mediatek: remove unneeded semicolon
  soc: mediatek: add a fixed wait for SRAM stable
  soc: mediatek: introduce a CAPS flag for scp_domain_data
  soc: mediatek: reuse regmap_read_poll_timeout helpers
  ...
 2018-06-11 18:15:22 -07:00
Linus Torvalds 7c00e8ae04 ARM: SoC platform updates 
Here are the main updates for SoC support (besides DT additions) for ARM
 32- and 64-bit platforms. The branch also contains defconfig updates to
 turn on drivers and options as needed on the various platforms.
 
 The largest parts of the delta are from cleanups moving platform data
 and board file setup of TI platforms to ti-sysc bus drivers. There are
 also some sweeping changes of eeprom and nand setup on Davinci, i.MX
 and other platforms.
 
 Samsung is removing support for Exynos5440, which was an oddball SoC
 that hasn't been seen much use in designs.
 
 Renesas is adding support for new SoCs (R-Car E3, RZ/G1C and RZ/N1D).
 
 Linus Walleij is also removing support for ux500 (Sony Ericsson)
 U8540/9540 SoCs that never made it to significant mass production and
 products.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Olof Johansson:
 "Here are the main updates for SoC support (besides DT additions) for
  ARM 32- and 64-bit platforms. The branch also contains defconfig
  updates to turn on drivers and options as needed on the various
  platforms.

  The largest parts of the delta are from cleanups moving platform data
  and board file setup of TI platforms to ti-sysc bus drivers. There are
  also some sweeping changes of eeprom and nand setup on Davinci, i.MX
  and other platforms.

  Samsung is removing support for Exynos5440, which was an oddball SoC
  that hasn't been seen much use in designs.

  Renesas is adding support for new SoCs (R-Car E3, RZ/G1C and RZ/N1D).

  Linus Walleij is also removing support for ux500 (Sony Ericsson)
  U8540/9540 SoCs that never made it to significant mass production and
  products"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits)
  MAINTAINERS: add NXP linux team maillist as i.MX reviewer
  ARM: stm32: Don't select DMA unconditionally on STM32MP157C
  arm64: defconfig: Enable PCIe on msm8996 and db820c
  ARM: pxa3xx: enable external wakeup pins
  ARM: pxa: stargate2: use device properties for at24 eeprom
  arm64: defconfig: Enable HISILICON_LPC
  arm64: defconfig: enable drivers for Poplar support
  arm64: defconfig: Enable UFS on msm8996
  ARM: berlin: switch to SPDX license identifier
  arm: berlin: remove non-necessary flush_cache_all()
  ARM: berlin: extend BG2CD Kconfig entry
  OMAP: CLK: CLKSRC: Add suspend resume hooks
  ARM: AM43XX: Add functions to save/restore am43xx control registers
  ASoC: ams_delta: use GPIO lookup table
  ARM: OMAP1: ams-delta: add GPIO lookup tables
  bus: ti-sysc: Fix optional clocks array access
  ARM: OMAP2+: Make sure LOGICRETSTATE bits are not cleared
  ARM: OMAP2+: prm44xx: Inroduce cpu_pm notifiers for context save/restore
  ARM: OMAP2+: prm44xx: Introduce context save/restore for am43 PRCM IO
  ARM: OMAP2+: powerdomain: Introduce cpu_pm notifiers for context save/restore
  ...
 2018-06-11 17:49:09 -07:00
Olof Johansson 280b0471fd One ti-sysc fix for v4.18 merge window 
This fixes an array access errors if there are more optional clocks
 than one.
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Merge tag 'omap-for-v4.18/ti-sysc-fix-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

One ti-sysc fix for v4.18 merge window

This fixes an array access errors if there are more optional clocks
than one.

* tag 'omap-for-v4.18/ti-sysc-fix-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Fix optional clocks array access

Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-05-25 14:11:54 -07:00
Tony Lindgren c97c862083 bus: ti-sysc: Fix optional clocks array access 
We should be checking ddata->clocks[i] instead of clock_names[i]
for the optional clocks. Currently this just happens to work for
the typical case of one fck and one optional clock.

Fixes: 09dfe58107 ("bus: ti-sysc: Add handling for clkctrl opt clocks")
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-18 07:54:44 -07:00
Olof Johansson 8b26d801cf ARM64: hisi: SoC driver updates for 4.18 
- Update hisi LPC bus driver to use the platform driver APIs
   other than the MFD APIs to support connected device like UART
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Merge tag 'hisi-drivers-for-4.18' of git://github.com/hisilicon/linux-hisi into next/drivers

ARM64: hisi: SoC driver updates for 4.18

- Update hisi LPC bus driver to use the platform driver APIs
  other than the MFD APIs to support connected device like UART

* tag 'hisi-drivers-for-4.18' of git://github.com/hisilicon/linux-hisi:
  HISI LPC: Add ACPI UART support
  HISI LPC: Re-Add ACPI child enumeration support
  HISI LPC: Stop using MFD APIs

Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-05-14 13:15:36 -07:00
Ingo Molnar 4b96583869 Linux 4.17-rc5 
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Merge tag 'v4.17-rc5' into irq/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2018-05-14 11:22:59 +02:00
Stefan Agner 10d8713429 bus: arm-cci: remove unnecessary unreachable() 
Mixing asm and C code is not recommended in a naked function by
gcc and leads to an error when using clang:
  drivers/bus/arm-cci.c:2107:2: error: non-ASM statement in naked
  function is not supported
        unreachable();
        ^

While the function is marked __naked it actually properly return
in asm. There is no need for the unreachable() call.

GCC 7.2 generates identical object files before and after, other
than (for obvious reasons) the line numbers generated by
WANT_WARN_ON_SLOWPATH for all the WARN()s appearing later in the
file.

Suggested-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-05-14 01:22:49 -07:00
Olof Johansson e5d9875ecd ti-sysc driver related changes for omap variants 
This series improves the ti-sysc interconnect target module driver to
 the point where a most of SoC can be booted with interconnect target
 module data configured in device tree instead of legacy platform data.
 The related device tree changes need some more work though, and can
 wait for v4.19. Also some drivers using nested interconnects like DSS
 need more work.
 
 We can now remove the unused pm-noop code that is not doing anything
 any longer. And we can now initialize things for PM and display pdata
 later to prepare things for using ti-sysc driver.
 
 We also need to add  some more quirk handling so we can boot both with
 platform data and dts data.
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Merge tag 'omap-for-v4.18/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

ti-sysc driver related changes for omap variants

This series improves the ti-sysc interconnect target module driver to
the point where a most of SoC can be booted with interconnect target
module data configured in device tree instead of legacy platform data.
The related device tree changes need some more work though, and can
wait for v4.19. Also some drivers using nested interconnects like DSS
need more work.

We can now remove the unused pm-noop code that is not doing anything
any longer. And we can now initialize things for PM and display pdata
later to prepare things for using ti-sysc driver.

We also need to add  some more quirk handling so we can boot both with
platform data and dts data.

* tag 'omap-for-v4.18/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Show module information for suspend if DEBUG is enabled
  bus: ti-sysc: Tag sdio and wdt with legacy mode for suspend
  bus: ti-sysc: Detect UARTs for SYSC_QUIRK_LEGACY_IDLE quirk on omap4
  bus: ti-sysc: Detect omap4 type timers for quirk
  bus: ti-sysc: Add initial support for external resets
  bus: ti-sysc: Improve suspend and resume handling
  bus: ti-sysc: Tag some modules resource providers for noirq suspend
  bus: ti-sysc: Add handling for clkctrl opt clocks
  bus: ti-sysc: Make child clock alias handling more generic
  bus: ti-sysc: Handle simple-bus for nested children
  ARM: OMAP2+: Make display related init into device_initcall
  ARM: OMAP2+: Initialize SoC PM later
  ARM: OMAP2+: Only probe SDMA via ti-sysc if configured in dts
  ARM: OMAP2+: Use signed value for sysc register offsets
  ARM: OMAP2+: Allow using ti-sysc for system timers
  ARM: OMAP2+: Drop unused pm-noop

Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-05-14 01:18:44 -07:00
Marc Zyngier 6988e0e0d2 genirq/msi: Limit level-triggered MSI to platform devices 
Nobody would be insane enough to try and use level triggered
MSIs on PCI, but let's make sure it doesn't happen. Also,
let's mandate that the irqchip backing the platform MSI domain
is providing the IRQCHIP_SUPPORTS_LEVEL_MSI flag.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <robh@kernel.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lkml.kernel.org/r/20180508121438.11301-3-marc.zyngier@arm.com
 2018-05-13 15:58:59 +02:00
John Garry adf3457b4c HISI LPC: Add ACPI UART support 
On the Huawei D03 development board the system UART is
the UART connected on the LPC bus.

The profile for the device driver required for this HW
is as follows:
 - platform driver
 - 16550
 - ACPI support
 - polling mode support
 - IO space support

In principle we should use the PNP driver (8250_dw.c) for
8250-devices with ACPI FW. However since this driver does
not support PNP devices, and modifying the PNP core code
to support it is not worth the effort, use the generic
8250 isa driver.

For this, we setup the pdev platform data for the serial
8250 port.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
 2018-05-10 17:45:52 +01:00
John Garry 99c0228d6f HISI LPC: Re-Add ACPI child enumeration support 
Since we no longer use the MFD APIs to enumerate the
child devices on the bus, use the platform driver APIs
directly.

In this patch we iterate of the children devices for the
host, and create a platform device directly per child.

For the iterating, we match the child ACPI HID against a
known list of supported child devices and their respective
ACPIs HID, to find the device name and any other
supplementary data.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
 2018-05-10 17:35:46 +01:00
John Garry 332f632ec3 HISI LPC: Stop using MFD APIs 
The MFD APIs should only be used by drivers in
drivers/mfd. It is not worth splitting the driver to have
separate parts in drivers/bus and drivers/mfd, so just
drop MFD API usage.

As a solution, we will use the platform device APIs directly
to achieve the same as we had when using MFD APIs.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
 2018-05-10 17:30:06 +01:00
Tony Lindgren dc4c85eac6 bus: ti-sysc: Show module information for suspend if DEBUG is enabled 
Let's show module info if DEBUG is enabled to make it easier to follow
what happens on the suspend and resume path.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren 7e27e5d05a bus: ti-sysc: Tag sdio and wdt with legacy mode for suspend 
Looks like these two device drivers don't yet behave properly for suspend
unless configured with the legacy option.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren d708bb1497 bus: ti-sysc: Detect UARTs for SYSC_QUIRK_LEGACY_IDLE quirk on omap4 
Starting with omap4, UARTs have different revision register that we need to
detect to enable SYSC_QUIRK_LEGACY_IDLE. Otherwise UARTs won't idle properly.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren 8cde5d5f73 bus: ti-sysc: Detect omap4 type timers for quirk 
Starting with omap4 some timers have different sysc registers (type2) compared
to the omap2 timers (type1). We need to detect these to enable the quirk for
SYSC_QUIRK_LEGACY_IDLE, otherwise these won't be idling properly.

Siganed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren 5062236ec4 bus: ti-sysc: Add initial support for external resets 
Some modules need to use external resets in the rstctrl bits. Typically
only one of the rstctrl bits is for the interconnect target module while
the others are for various child devices.

For ti-sysc driver, we just need the module rstctrl bit mapped. The rest
of the rstctrl bits can be directly mapped to the child devices.

Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren ef55f8215a bus: ti-sysc: Improve suspend and resume handling 
Based on testing with more devices I noticed that some devices
don't suspend or resume properly. We need to PM runtime suspend
and resume devices if we have ddata->needs_resume set.

Let's also improve the error handling and add few debug statements
to make it easier to notice suspend and resume related issues if
DEBUG is set.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren e7420c2d44 bus: ti-sysc: Tag some modules resource providers for noirq suspend 
Modules that provide resources for other modules need to be suspended
and resumed in the noirq calls. Tag the resource providing modules.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-05-01 06:54:17 -07:00
Tony Lindgren 09dfe58107 bus: ti-sysc: Add handling for clkctrl opt clocks 
There can be up to eight optional device functional gate gate clocks for
each clkctrl instance in clkctrl register bits 8 to 15. Some of them are
only needed for module level reset while others may always be needed
during use. Let's add support for those and update the binding doc
accordingly.

Note that the optional clkctrl mux and divider clocks starting at bit 20
can be directly mapped to the child devices, and ti-sysc does not need to
manage those.

And as GPIOs need the optional clocks for reset, we can now add it with
SYSC_QUIRK_OPT_CLKS_IN_RESET.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-04-30 12:04:51 -07:00
Tony Lindgren 8b2830ba17 bus: ti-sysc: Make child clock alias handling more generic 
In order to prepare supporting clkctrl optional clocks, we need to
make the current child clock handling more generic so we can use the
clock role names for the optional clocks in the following patch.

Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-04-30 12:04:51 -07:00
Tony Lindgren c4bebea8c5 bus: ti-sysc: Handle simple-bus for nested children 
Otherwise child devices that some interconnect target module devices
have won't probe using simple-bus.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-04-30 12:04:51 -07:00
John Garry 4b313ca7b6 HISI LPC: Add Kconfig MFD_CORE dependency 
For ACPI support of the HiSilicon LPC driver we depend
on MFD_CORE config.

Currently the HiSi LPC Kconfig entry does not define this
dependency, so add it.

The reason for depending on MFD_CORE in the driver is
that we model the LPC host as an MFD, in that a platform
device will be created for each device on the bus.

We do this as we need to modify the resources of these
derived platform devices, something which we should not
do to the original devices created in the ACPI scan.
Details in e0aa1563f8 ("HISI LPC: Add ACPI support").

Fixes: e0aa1563f8 ("HISI LPC: Add ACPI support")
Reported-and-tested-by: Tan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2018-04-26 16:53:23 +02:00
Linus Torvalds 3c0d551e02 pci-v4.17-changes 
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Merge tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - move pci_uevent_ers() out of pci.h (Michael Ellerman)

 - skip ASPM common clock warning if BIOS already configured it (Sinan
   Kaya)

 - fix ASPM Coverity warning about threshold_ns (Gustavo A. R. Silva)

 - remove last user of pci_get_bus_and_slot() and the function itself
   (Sinan Kaya)

 - add decoding for 16 GT/s link speed (Jay Fang)

 - add interfaces to get max link speed and width (Tal Gilboa)

 - add pcie_bandwidth_capable() to compute max supported link bandwidth
   (Tal Gilboa)

 - add pcie_bandwidth_available() to compute bandwidth available to
   device (Tal Gilboa)

 - add pcie_print_link_status() to log link speed and whether it's
   limited (Tal Gilboa)

 - use PCI core interfaces to report when device performance may be
   limited by its slot instead of doing it in each driver (Tal Gilboa)

 - fix possible cpqphp NULL pointer dereference (Shawn Lin)

 - rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI
   hotplug (Mika Westerberg)

 - add support for PCI I/O port space that's neither directly accessible
   via CPU in/out instructions nor directly mapped into CPU physical
   memory space. This is fairly intrusive and includes minor changes to
   interfaces used for I/O space on most platforms (Zhichang Yuan, John
   Garry)

 - add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan,
   John Garry)

 - use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)

 - remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
   (Shawn Lin)

 - report quirk timings with dev_info (Bjorn Helgaas)

 - report quirks that take longer than 10ms (Bjorn Helgaas)

 - add and use Altera Vendor ID (Johannes Thumshirn)

 - tidy Makefiles and comments (Bjorn Helgaas)

 - don't set up INTx if MSI or MSI-X is enabled to align cris, frv,
   ia64, and mn10300 with x86 (Bjorn Helgaas)

 - move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick
   Lawler)

 - merge pcieport_if.h into portdrv.h (Bjorn Helgaas)

 - move workaround for BIOS PME issue from portdrv to PCI core (Bjorn
   Helgaas)

 - completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas)

 - remove portdrv link order dependency (Bjorn Helgaas)

 - remove support for unused VC portdrv service (Bjorn Helgaas)

 - simplify portdrv feature permission checking (Bjorn Helgaas)

 - remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn
   Helgaas)

 - remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas)

 - use cached AER capability offset (Frederick Lawler)

 - don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg)

 - rename pcie-dpc.c to dpc.c (Bjorn Helgaas)

 - use generic pci_mmap_resource_range() instead of powerpc and xtensa
   arch-specific versions (David Woodhouse)

 - support arbitrary PCI host bridge offsets on sparc (Yinghai Lu)

 - remove System and Video ROM reservations on sparc (Bjorn Helgaas)

 - probe for device reset support during enumeration instead of runtime
   (Bjorn Helgaas)

 - add ACS quirk for Ampere (née APM) root ports (Feng Kan)

 - add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas
   Vincent-Cross)

 - protect device restore with device lock (Sinan Kaya)

 - handle failure of FLR gracefully (Sinan Kaya)

 - handle CRS (config retry status) after device resets (Sinan Kaya)

 - skip various config reads for SR-IOV VFs as an optimization
   (KarimAllah Ahmed)

 - consolidate VPD code in vpd.c (Bjorn Helgaas)

 - add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)

 - add DT support for R-Car r8a7743 (Biju Das)

 - fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host
   bridge driver that causes a general protection fault (Dexuan Cui)

 - fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV
   (Dexuan Cui)

 - fix Hyper-V host bridge hang when ejecting a VF before setting up MSI
   (Dexuan Cui)

 - make several structures static (Fengguang Wu)

 - increase number of MSI IRQs supported by Synopsys DesignWare bridges
   from 32 to 256 (Gustavo Pimentel)

 - implemented multiplexed IRQ domain API and remove obsolete MSI IRQ
   API from DesignWare drivers (Gustavo Pimentel)

 - add Tegra power management support (Manikanta Maddireddy)

 - add Tegra loadable module support (Manikanta Maddireddy)

 - handle 64-bit BARs correctly in endpoint support (Niklas Cassel)

 - support optional regulator for HiSilicon STB (Shawn Guo)

 - use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla)

 - support power supplies for Qualcomm msm8996 (Srinivas Kandagatla)

* tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits)
  MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver
  HISI LPC: Add ACPI support
  ACPI / scan: Do not enumerate Indirect IO host children
  ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use
  HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings
  of: Add missing I/O range exception for indirect-IO devices
  PCI: Apply the new generic I/O management on PCI IO hosts
  PCI: Add fwnode handler as input param of pci_register_io_range()
  PCI: Remove __weak tag from pci_register_io_range()
  MAINTAINERS: Add missing /drivers/pci/cadence directory entry
  fm10k: Report PCIe link properties with pcie_print_link_status()
  net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth
  net/mlx5: Report PCIe link properties with pcie_print_link_status()
  net/mlx4_core: Report PCIe link properties with pcie_print_link_status()
  PCI: Add pcie_print_link_status() to log link speed and whether it's limited
  PCI: Add pcie_bandwidth_available() to compute bandwidth available to device
  misc: pci_endpoint_test: Handle 64-bit BARs properly
  PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly
  PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing
  PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar
  ...
 2018-04-06 18:31:06 -07:00
Linus Torvalds 38c23685b2 ARM: SoC driver updates for 4.17 
The main addition this time around is the new ARM "SCMI" framework,
 which is the latest in a series of standards coming from ARM to do power
 management in a platform independent way. This has been through many
 review cycles, and it relies on a rather interesting way of using the
 mailbox subsystem, but in the end I agreed that Sudeep's version was
 the best we could do after all.
 
 Other changes include:
 
 - the ARM CCN driver is moved out of drivers/bus into drivers/perf,
   which makes more sense. Similarly, the performance monitoring
   portion of the CCI driver are moved the same way and cleaned up
   a little more.
 
 - a series of updates to the SCPI framework
 
 - support for the Mediatek mt7623a SoC in drivers/soc
 
 - support for additional NVIDIA Tegra hardware in drivers/soc
 
 - a new reset driver for Socionext Uniphier
 
 - lesser bug fixes in drivers/soc, drivers/tee, drivers/memory, and
   drivers/firmware and drivers/reset across platforms
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "The main addition this time around is the new ARM "SCMI" framework,
  which is the latest in a series of standards coming from ARM to do
  power management in a platform independent way.

  This has been through many review cycles, and it relies on a rather
  interesting way of using the mailbox subsystem, but in the end I
  agreed that Sudeep's version was the best we could do after all.

  Other changes include:

   - the ARM CCN driver is moved out of drivers/bus into drivers/perf,
     which makes more sense. Similarly, the performance monitoring
     portion of the CCI driver are moved the same way and cleaned up a
     little more.

   - a series of updates to the SCPI framework

   - support for the Mediatek mt7623a SoC in drivers/soc

   - support for additional NVIDIA Tegra hardware in drivers/soc

   - a new reset driver for Socionext Uniphier

   - lesser bug fixes in drivers/soc, drivers/tee, drivers/memory, and
     drivers/firmware and drivers/reset across platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (87 commits)
  reset: uniphier: add ethernet reset control support for PXs3
  reset: stm32mp1: Enable stm32mp1 reset driver
  dt-bindings: reset: add STM32MP1 resets
  reset: uniphier: add Pro4/Pro5/PXs2 audio systems reset control
  reset: imx7: add 'depends on HAS_IOMEM' to fix unmet dependency
  reset: modify the way reset lookup works for board files
  reset: add support for non-DT systems
  clk: scmi: use devm_of_clk_add_hw_provider() API and drop scmi_clocks_remove
  firmware: arm_scmi: prevent accessing rate_discrete uninitialized
  hwmon: (scmi) return -EINVAL when sensor information is unavailable
  amlogic: meson-gx-socinfo: Update soc ids
  soc/tegra: pmc: Use the new reset APIs to manage reset controllers
  soc: mediatek: update power domain data of MT2712
  dt-bindings: soc: update MT2712 power dt-bindings
  cpufreq: scmi: add thermal dependency
  soc: mediatek: fix the mistaken pointer accessed when subdomains are added
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7623A SoC
  soc: mediatek: avoid hardcoded value with bus_prot_mask
  dt-bindings: soc: add header files required for MT7623A SCPSYS dt-binding
  dt-bindings: soc: add SCPSYS binding for MT7623 and MT7623A SoC
  ...
 2018-04-05 21:29:35 -07:00
Linus Torvalds 167569343f ARM: SoC platform updates for 4.17 
This release brings up a new platform based on the old ARM9 core: the
 Nuvoton NPCM is used as a baseboard management controller, competing
 with the better known ASpeed AST2xx series.
 
 Another important change is the addition of ARMv7-A based chips
 in mach-stm32. The older parts in this platform are ARMv7-M based
 microcontrollers, now they are expanding to general-purpose workloads.
 
 The other changes are the usual defconfig updates to enable additional
 drivers, lesser bugfixes. The largest updates as often are the ongoing
 OMAP cleanups, but we also have a number of changes for the older
 PXA and davinci platforms this time.
 
 For the Renesas shmobile/r-car platform, some new infrastructure
 is needed to make the watchdog work correctly.
 
 Supporting Multiprocessing on Allwinner A80 required a significant
 amount of new code, but is not doing anything unexpected.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Arnd Bergmann:
 "This release brings up a new platform based on the old ARM9 core: the
  Nuvoton NPCM is used as a baseboard management controller, competing
  with the better known ASpeed AST2xx series.

  Another important change is the addition of ARMv7-A based chips in
  mach-stm32. The older parts in this platform are ARMv7-M based
  microcontrollers, now they are expanding to general-purpose workloads.

  The other changes are the usual defconfig updates to enable additional
  drivers, lesser bugfixes. The largest updates as often are the ongoing
  OMAP cleanups, but we also have a number of changes for the older PXA
  and davinci platforms this time.

  For the Renesas shmobile/r-car platform, some new infrastructure is
  needed to make the watchdog work correctly.

  Supporting Multiprocessing on Allwinner A80 required a significant
  amount of new code, but is not doing anything unexpected"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (179 commits)
  arm: npcm: modify configuration for the NPCM7xx BMC.
  MAINTAINERS: update entry for ARM/berlin
  ARM: omap2: fix am43xx build without L2X0
  ARM: davinci: da8xx: simplify CFGCHIP regmap_config
  ARM: davinci: da8xx: fix oops in USB PHY driver due to stack allocated platform_data
  ARM: multi_v7_defconfig: add NXP FlexCAN IP support
  ARM: multi_v7_defconfig: enable thermal driver for i.MX devices
  ARM: multi_v7_defconfig: add RN5T618 PMIC family support
  ARM: multi_v7_defconfig: add NXP graphics drivers
  ARM: multi_v7_defconfig: add GPMI NAND controller support
  ARM: multi_v7_defconfig: add OCOTP driver for NXP SoCs
  ARM: multi_v7_defconfig: configure I2C driver built-in
  arm64: defconfig: add CONFIG_UNIPHIER_THERMAL and CONFIG_SNI_AVE
  ARM: imx: fix imx6sll-only build
  ARM: imx: select ARM_CPU_SUSPEND for CPU_IDLE as well
  ARM: mxs_defconfig: Re-sync defconfig
  ARM: imx_v4_v5_defconfig: Use the generic fsl-asoc-card driver
  ARM: imx_v4_v5_defconfig: Re-sync defconfig
  arm64: defconfig: enable stmmac ethernet to defconfig
  ARM: EXYNOS: Simplify code in coupled CPU idle hot path
  ...
 2018-04-05 21:21:08 -07:00
Linus Torvalds df34df483a Staging/IIO patches for 4.17-rc1 
Here is the big set of Staging/IIO driver patches for 4.17-rc1.
 
 It is a lot, over 500 changes, but not huge by previous kernel release
 standards.  We deleted more lines than we added again (27k added vs. 91k
 remvoed), thanks to finally being able to delete the IRDA drivers and
 networking code.
 
 We also deleted the ccree crypto driver, but that's coming back in
 through the crypto tree to you, in a much cleaned-up form.
 
 Added this round is at lot of "mt7621" device support, which is for an
 embedded device that Neil Brown cares about, and of course a handful of
 new IIO drivers as well.
 
 And finally, the fsl-mc core code moved out of the staging tree to the
 "real" part of the kernel, which is nice to see happen as well.
 
 Full details are in the shortlog, which has all of the tiny cleanup
 patches described.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here is the big set of Staging/IIO driver patches for 4.17-rc1.

  It is a lot, over 500 changes, but not huge by previous kernel release
  standards. We deleted more lines than we added again (27k added vs.
  91k remvoed), thanks to finally being able to delete the IRDA drivers
  and networking code.

  We also deleted the ccree crypto driver, but that's coming back in
  through the crypto tree to you, in a much cleaned-up form.

  Added this round is at lot of "mt7621" device support, which is for an
  embedded device that Neil Brown cares about, and of course a handful
  of new IIO drivers as well.

  And finally, the fsl-mc core code moved out of the staging tree to the
  "real" part of the kernel, which is nice to see happen as well.

  Full details are in the shortlog, which has all of the tiny cleanup
  patches described.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (579 commits)
  staging: rtl8723bs: Remove yield call, replace with cond_resched()
  staging: rtl8723bs: Replace yield() call with cond_resched()
  staging: rtl8723bs: Remove unecessary newlines from 'odm.h'.
  staging: rtl8723bs: Rework 'struct _ODM_Phy_Status_Info_' coding style.
  staging: rtl8723bs: Rework 'struct _ODM_Per_Pkt_Info_' coding style.
  staging: rtl8723bs: Replace NULL pointer comparison with '!'.
  staging: rtl8723bs: Factor out rtl8723bs_recv_tasklet() sections.
  staging: rtl8723bs: Fix function signature that goes over 80 characters.
  staging: rtl8723bs: Fix lines too long in update_recvframe_attrib().
  staging: rtl8723bs: Remove unnecessary blank lines in 'rtl8723bs_recv.c'.
  staging: rtl8723bs: Change camel case to snake case in 'rtl8723bs_recv.c'.
  staging: rtl8723bs: Add missing braces in else statement.
  staging: rtl8723bs: Add spaces around ternary operators.
  staging: rtl8723bs: Fix lines with trailing open parentheses.
  staging: rtl8723bs: Remove unnecessary length #define's.
  staging: rtl8723bs: Fix IEEE80211 authentication algorithm constants.
  staging: rtl8723bs: Fix alignment in rtw_wx_set_auth().
  staging: rtl8723bs: Remove braces from single statement conditionals.
  staging: rtl8723bs: Remove unecessary braces from switch statement.
  staging: rtl8723bs: Fix newlines in rtw_wx_set_auth().
  ...
 2018-04-04 18:56:27 -07:00
John Garry e0aa1563f8 HISI LPC: Add ACPI support 
Based on the previous patches, this patch supports the LPC host on
Hip06/Hip07 for ACPI FW.

It is the responsibility of the LPC host driver to enumerate the child
devices, as the ACPI scan code will not enumerate children of "indirect IO"
hosts.

The ACPI table for the LPC host controller and the child devices is in the
following format:

  Device (LPC0) {
    Name (_HID, "HISI0191")  // HiSi LPC
    Name (_CRS, ResourceTemplate () {
      Memory32Fixed (ReadWrite, 0xa01b0000, 0x1000)
    })
  }

  Device (LPC0.IPMI) {
    Name (_HID, "IPI0001")
    Name (LORS, ResourceTemplate() {
      QWordIO (
        ResourceConsumer,
        MinNotFixed,     // _MIF
        MaxNotFixed,     // _MAF
        PosDecode,
        EntireRange,
        0x0,             // _GRA
        0xe4,            // _MIN
        0x3fff,          // _MAX
        0x0,             // _TRA
        0x04,            // _LEN
        , ,
        BTIO
      )
    })

Since the IO resources of the child devices need to be translated from LPC
bus addresses to logical PIO addresses, and we shouldn't modify the
resources of the devices generated in the FW scan, a per-child MFD is
created as a substitute.  The MFD IO resources will be the translated bus
addresses of the ACPI child.

Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Zhichang Yuan <yuanzhichang@hisilicon.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
 2018-04-04 08:42:51 -05:00
Zhichang Yuan adf38bb0b5 HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings 
The low-pin-count (LPC) interface of Hip06/Hip07 accesses I/O port space of
peripherals.

Implement the LPC host controller driver which performs the I/O operations
on the underlying hardware.  We don't want to touch existing drivers such
as ipmi-bt, so this driver applies the indirect-IO introduced in the
previous patch after registering an indirect-IO node to the indirect-IO
devices list which will be searched by the I/O accessors to retrieve the
host-local I/O port.

The driver config is set as a bool instead of a tristate.  The reason here
is that, by the very nature of the driver providing a logical PIO range, it
does not make sense to have this driver as a loadable module.  Another more
specific reason is that the Huawei D03 board which includes Hip06 SoC
requires the LPC bus for UART console, so should be built in.

Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Zou Rongrong <zourongrong@huawei.com>
Signed-off-by: Zhichang Yuan <yuanzhichang@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>	# dts part
 2018-04-04 08:42:48 -05:00
Ioana Ciornei 1e8ac83b6c bus: fsl-mc: add fsl_mc_allocator cleanup function 
The userspace support for fsl-mc requires a fsl_mc_allocator
cleanup function. Add the needed function.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-03-23 15:52:48 +01:00
Ioana Ciornei 5b04cedeca bus: fsl-mc: change mc_command in fsl_mc_command 
The "struct mc_command" is a very generic name for a global
kernel structure. Change its name in "struct fsl_mc_command".

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-03-23 15:52:48 +01:00
Greg Kroah-Hartman 73709e1af5 Merge 4.16-rc6 into staging-next 
We want the staging fixes in here as well to handle merge/test issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-03-19 06:47:01 +01:00
Peter Zijlstra edb39592a5 perf: Fix sibling iteration 
Mark noticed that the change to sibling_list changed some iteration
semantics; because previously we used group_list as list entry,
sibling events would always have an empty sibling_list.

But because we now use sibling_list for both list head and list entry,
siblings will report as having siblings.

Fix this with a custom for_each_sibling_event() iterator.

Fixes: 8343aae661 ("perf/core: Remove perf_event::group_entry")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: vincent.weaver@maine.edu
Cc: alexander.shishkin@linux.intel.com
Cc: torvalds@linux-foundation.org
Cc: alexey.budankov@linux.intel.com
Cc: valery.cherepennikov@intel.com
Cc: eranian@google.com
Cc: acme@redhat.com
Cc: linux-tip-commits@vger.kernel.org
Cc: davidcc@google.com
Cc: kan.liang@intel.com
Cc: Dmitry.Prohorov@intel.com
Cc: jolsa@redhat.com
Link: https://lkml.kernel.org/r/20180315170129.GX4043@hirez.programming.kicks-ass.net
 2018-03-16 20:44:12 +01:00
Bogdan Purcareata 70ae9cf015 staging: fsl-mc: Move DPCON out of staging 
Move the source files out of staging into their final locations:
- dpcon.c goes to drivers/bus/fsl-mc/, next to the core infrastructure
- dpcon-cmd.h gets merged into drivers/bus/fsl-mc/fsl-mc-private.h, next
  to the other internally used APIs
- dpcon.h gets merged into include/linux/fsl/mc.h, exposing the public
  API

Update references in the dpaa2-eth staging driver.

DPCON stands for Data Path Concentrator - an interface between DPIO
(Data Path IO) and its users (e.g. dpaa2-eth). You can read more about
DPIO in Documentation/networking/dpaa2/overview.rst

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-03-14 13:18:42 +01:00
Bogdan Purcareata 9c692d5ae7 staging: fsl-mc: Move DPBP out of staging 
Move the source files out of staging into their final locations:
- dpbp.c goes to drivers/bus/fsl-mc/, next to the core infrastructure
- dpbp-cmd.h gets merged into drivers/bus/fsl-mc/fsl-mc-private.h, next
  to the other internally used APIs
- dpbp.h gets merged into include/linux/fsl/mc.h, exposing the public
  API

Update references in the dpaa2-eth staging driver.

DPBP stands for Data Path Buffer Pool - you can read more about the
object in Documentation/networking/dpaa2/overview.rst

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-03-14 13:18:42 +01:00
Peter Zijlstra 8343aae661 perf/core: Remove perf_event::group_entry 
Now that all the grouping is done with RB trees, we no longer need
group_entry and can replace the whole thing with sibling_list.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Carrillo-Cisneros <davidcc@google.com>
Cc: Dmitri Prokhorov <Dmitry.Prohorov@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Valery Cherepennikov <valery.cherepennikov@intel.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2018-03-12 15:28:49 +01:00
Arnd Bergmann 3bf5c70d06 Driver changes for ti-sysc for v4.17 
This series of changes enables the use device tree based sysconfig
 data for ti-sysc driver. As we already have SmartReflex data configured,
 we use that as the first driver to enable. To do that in a way where
 SmartReflex is not probed twice, we need to prepare the SmartReflex
 driver before flipping dts data on for it in the last patch of the
 series.
 
 To avoid regressions, we are checking the passed dts data against
 existing platform data since we still have it available. Then after the
 dts files are converted, we can simply drop the related platform data
 at some point in the future.
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Merge tag 'omap-for-v4.17/ti-sysc-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

Pull "Driver changes for ti-sysc for v4.17" from Tony Lindgren:

This series of changes enables the use device tree based sysconfig
data for ti-sysc driver. As we already have SmartReflex data configured,
we use that as the first driver to enable. To do that in a way where
SmartReflex is not probed twice, we need to prepare the SmartReflex
driver before flipping dts data on for it in the last patch of the
series.

To avoid regressions, we are checking the passed dts data against
existing platform data since we still have it available. Then after the
dts files are converted, we can simply drop the related platform data
at some point in the future.

* tag 'omap-for-v4.17/ti-sysc-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Enable ti-sysc to use device tree data for smartreflex
  PM / AVS: SmartReflex: Prepare to use device tree based probing
  ARM: OMAP2+: Try to parse earlycon from parent too
  ARM: OMAP2+: Add checks for device tree based sysconfig data
  ARM: OMAP2+: Add functions to allocate module data from device tree
  bus: ti-sysc: Handle some devices in omap_device compatible way
  bus: ti-sysc: Add support for platform data callbacks
  bus: ti-sysc: Remove unnecessary debugging statements
  bus: ti-sysc: Improve handling for no-reset-on-init and no-idle-on-init
  bus: ti-sysc: Handle stdout-path for debug console
  bus: ti-sysc: Add suspend and resume handling
  bus: ti-sysc: Add fck clock alias for children with notifier_block
  ARM: OMAP2+: Prepare to pass auxdata for smartreflex
 2018-03-07 16:26:43 +01:00
Robin Murphy e9c112c94b perf/arm-cci: Untangle global cci_ctrl_base 
Depending directly on the bus driver's global cci_ctrl_base variable
is a little unpleasant, and exporting it to allow the PMU driver to
be modular would be even more so. Let's make things a little better
abstracted by adding the control register block to the cci_pmu instance
data alongside the PMU register block, and communicating the mapped
address from the bus driver via platform data.

It's not practical to try the same thing for the bus driver itself,
given that the globals are entangled with the hairy assembly code for
port control, so we leave them be there. It would however be prudent
to move them to the __ro_after_init section in passing, since the
addresses really should never be changing once set.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2018-03-06 17:27:25 +01:00
Robin Murphy 3ee5e821f3 bus/arm-cci: Streamline devicetree handling a bit 
Rather than iterating over child nodes explicitly testing for
availability, we can just use the other helper which already subsumes
that check. Also, the availability check is already NULL-safe, so get
rid of a redundant check in cci_probe(), too.

Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2018-03-06 17:26:48 +01:00
Robin Murphy 3de6be7a3d drivers/bus: Split Arm CCI driver 
The arm-cci driver is really two entirely separate drivers; one for MCPM
port control and the other for the performance monitors. Since they are
already relatively self-contained, let's take the plunge and move the
PMU parts out to drivers/perf where they belong these days. For non-MCPM
systems this leaves a small dependency on the remaining "bus" stub for
initial probing and discovery, but we end up with something that still
fits the general pattern of its fellow system PMU drivers to ease future
maintenance.

Moving code to a new file also offers a perfect excuse to modernise the
license/copyright headers and clean up some funky linewraps on the way.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Suzuki Poulose <suzuki.poulose@arm.com>
Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2018-03-06 17:26:17 +01:00
Robin Murphy 1888d3ddc3 drivers/bus: Move Arm CCN PMU driver 
The arm-ccn driver is purely a perf driver for the CCN PMU, not a bus
driver in the sense of the other residents of drivers/bus/, so let's
move it to the appropriate place for SoC PMU drivers. Not to mention
moving the documentation accordingly as well.

Acked-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2018-03-06 17:26:15 +01:00
Tony Lindgren a885f0fe20 bus: ti-sysc: Handle some devices in omap_device compatible way 
Now that ti-sysc can manage child devices, we must also be backwards
compatible with the current omap_device code. With omap_device, we
assume that the child device manages the interconnect target module
directly.

The drivers needing special handling are the ones that still set
pm_runtime_irq_safe(). In the long run we want to update those drivers
as otherwise they will cause problems with genpd as a permanent PM
runtime usage count is set on the parent device.

We can handle omap_device these devices by improving the ti-sysc quirk
handling to detect the devices needing special handling based on
register map and revision register if usable. We also need to implement
dev_pm_domain for these child devices just like omap_device does.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-26 14:16:11 -08:00
Tony Lindgren ef70b0bdea bus: ti-sysc: Add support for platform data callbacks 
We want to pass the device tree configuration for interconnect target
modules from ti-sysc driver to the existing platform hwmod code.

This allows us to first validate the dts data against the existing
platform data before we start dropping the platform data in favor of
device tree data.

To do this, let's add platform data callbacks for PM runtime functions
to call for the interconnect target modules if platform data is
available.

Note that as ti-sysc driver can rebind, omap_auxdata_lookup and related
functions can no longer be __init.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-26 14:16:11 -08:00
Tony Lindgren dd57ac1e5c bus: ti-sysc: Remove unnecessary debugging statements 
We already show the status for the interconnect target module
when debugging is enabled, there's no need to be more verbose
about that. So let's just cut down the noise and remove the
extra debug statements.

Signed-off-by: Tony Lindgren <tony@atomide.coM>
 2018-02-26 14:16:10 -08:00
Tony Lindgren 76f0f772e4 bus: ti-sysc: Improve handling for no-reset-on-init and no-idle-on-init 
At least earlycon needs a delayed idle before the 8250 driver probes
to avoid glitches in the console output. Let's handle the delayed idle
for devices tagged with ti,no-reset-on-init and ti,no-idle-on-init with
delayed_work. Others don't need it, and there should be no need to use
runtime PM autosuspend for the interconnect target driver as it's the
child device drivers that should configure it.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-26 14:16:10 -08:00
Tony Lindgren 3bb37c8e6e bus: ti-sysc: Handle stdout-path for debug console 
If we have stdout-path specified for earlycon, we must prevent
the debug console from idling until runtime PM kicks in.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-26 14:16:10 -08:00
Tony Lindgren 62020f2312 bus: ti-sysc: Add suspend and resume handling 
This allows us to idle the module on suspend after the children
are suspended.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-26 14:16:10 -08:00
Tony Lindgren 2c355ff6b6 bus: ti-sysc: Add fck clock alias for children with notifier_block 
The functional clock is used by several child device drivers to query
the rate for the child device internal configuration. The functional
clock is really for the whole interconnect target module, and not just
for the child device, and can also be shared across multiple children.
At least the timers, i2c and mmc driver query the fck for rate.

So let's just create a clock alias for the child fck if it does not
yet exits. We can do this with the BUS_NOTIFY_ADD_DEVICE before the
child is probed.

Note that we need to now also remove the legacy mode check for getting
the dts clocks in ti-sysc driver.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-26 14:16:10 -08:00
Stephen Rothwell 02a0e77b24 staging: fsl-mc: merge fix for CONFIG_FSL_MC_BUS moving 
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-02-26 15:33:47 +01:00
Bogdan Purcareata 6bd067c48e staging: fsl-mc: Move core bus out of staging 
Move the source files out of staging into their final locations:
  -mc.h include file in drivers/staging/fsl-mc/include go to include/linux/fsl
  -source files in drivers/staging/fsl-mc/bus go to drivers/bus/fsl-mc
  -overview.rst, providing an overview of DPAA2, goes to
   Documentation/networking/dpaa2/overview.rst

Update or delete other remaining staging files -- Makefile, Kconfig, TODO.
Update dpaa2_eth and dpio staging drivers.
Add integration bits for the documentation build system.

Signed-off-by: Stuart Yoder <stuyoder@gmail.com>
[rebased, add dpaa2_eth and dpio #include updates]
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
[rebased, split irqchip to separate patch]
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-02-22 15:10:50 +01:00
Tony Lindgren d39b6ea4f8 bus: ti-sysc: Fix checking of no-reset-on-init quirk 
We are currently only checking for the first entry in the table while
we should check them all. Usual no-idle-on-init is together with
no-reset-on-init, so this has gone unnoticed.

Fixes: 566a9b05e1 ("bus: ti-sysc: Handle module quirks based dts
configuration")
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-02-15 09:18:55 -08:00
Linus Torvalds fe53d1443a ARM: SoC driver updates for 4.16 
A number of new drivers get added this time, along with many low-priority
 bugfixes. The most interesting changes by subsystem are:
 
 bus drivers:
   - Updates to the Broadcom bus interface driver to support newer SoC types
   - The TI OMAP sysc driver now supports updated DT bindings
 
 memory controllers:
   - A new driver for Tegra186 gets added
   - A new driver for the ti-emif sram, to allow relocating
     suspend/resume handlers there
 
 SoC specific:
   - A new driver for Qualcomm QMI, the interface to the modem on MSM SoCs
   - A new driver for power domains on the actions S700 SoC
   - A driver for the Xilinx Zynq VCU logicoreIP
 
 reset controllers:
   - A new driver for Amlogic Meson-AGX
   - various bug fixes
 
 tee subsystem:
   - A new user interface got added to enable asynchronous communication
     with the TEE supplicant.
   - A new method of using user space memory for communication with
     the TEE is added
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "A number of new drivers get added this time, along with many
  low-priority bugfixes. The most interesting changes by subsystem are:

  bus drivers:
   - Updates to the Broadcom bus interface driver to support newer SoC
     types
   - The TI OMAP sysc driver now supports updated DT bindings

  memory controllers:
   - A new driver for Tegra186 gets added
   - A new driver for the ti-emif sram, to allow relocating
     suspend/resume handlers there

  SoC specific:
   - A new driver for Qualcomm QMI, the interface to the modem on MSM
     SoCs
   - A new driver for power domains on the actions S700 SoC
   - A driver for the Xilinx Zynq VCU logicoreIP

  reset controllers:
   - A new driver for Amlogic Meson-AGX
   - various bug fixes

  tee subsystem:
   - A new user interface got added to enable asynchronous communication
     with the TEE supplicant.
   - A new method of using user space memory for communication with the
     TEE is added"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (84 commits)
  of: platform: fix OF node refcount leak
  soc: fsl: guts: Add a NULL check for devm_kasprintf()
  bus: ti-sysc: Fix smartreflex sysc mask
  psci: add CPU_IDLE dependency
  soc: xilinx: Fix Kconfig alignment
  soc: xilinx: xlnx_vcu: Use bitwise & rather than logical && on clkoutdiv
  soc: xilinx: xlnx_vcu: Depends on HAS_IOMEM for xlnx_vcu
  soc: bcm: brcmstb: Be multi-platform compatible
  soc: brcmstb: biuctrl: exit without warning on non brcmstb platforms
  Revert "soc: brcmstb: Only register SoC device on STB platforms"
  bus: omap: add MODULE_LICENSE tags
  soc: brcmstb: Only register SoC device on STB platforms
  tee: shm: Potential NULL dereference calling tee_shm_register()
  soc: xilinx: xlnx_vcu: Add Xilinx ZYNQMP VCU logicoreIP init driver
  dt-bindings: soc: xilinx: Add DT bindings to xlnx_vcu driver
  soc: xilinx: Create folder structure for soc specific drivers
  of: platform: populate /firmware/ node from of_platform_default_populate_init()
  soc: samsung: Add SPDX license identifiers
  soc: qcom: smp2p: Use common error handling code in qcom_smp2p_probe()
  tee: shm: don't put_page on null shm->pages
  ...
 2018-02-01 16:35:31 -08:00
Arnd Bergmann 796543a64e One minor fix for ti-sysc smartreflex sysc mask that prevents idling 
the smartreflex interconnect target module for device tree based
 probing.
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Merge tag 'omap-for-v4.16/ti-sysc-fix-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

Pull "one ti-sysc driver fix for v4.16 merge window" from Tony Lindgren:

One minor fix for ti-sysc smartreflex sysc mask that prevents idling
the smartreflex interconnect target module for device tree based
probing.

* tag 'omap-for-v4.16/ti-sysc-fix-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Fix smartreflex sysc mask
 2018-01-26 17:35:16 +01:00
Tony Lindgren 3267c081e0 bus: ti-sysc: Fix smartreflex sysc mask 
The enawakeup bit is in a different location for smartreflex compared
to the "ti,sysc-omap2" compatible.

Fixes: 70a65240ef ("bus: ti-sysc: Add register bits for interconnect
target modules")
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2018-01-22 09:32:53 -08:00
Rafael J. Wysocki f9b736f64a Merge branches 'pm-domains', 'pm-kconfig', 'pm-cpuidle' and 'powercap' 
* pm-domains:
  PM / genpd: Stop/start devices without pm_runtime_force_suspend/resume()
  PM / domains: Don't skip driver's ->suspend|resume_noirq() callbacks
  PM / Domains: Remove obsolete "samsung,power-domain" check

* pm-kconfig:
  bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate
  PM: Provide a config snippet for disabling PM

* pm-cpuidle:
  cpuidle: Avoid NULL argument in cpuidle_switch_governor()

* powercap:
  powercap: intel_rapl: Fix trailing semicolon
  powercap: add suspend and resume mechanism for SOC power limit
  powercap: Simplify powercap_init()
 2018-01-18 02:54:45 +01:00
Arnd Bergmann be60566ea9 bus: omap: add MODULE_LICENSE tags 
linux-4.15 warns about missing MODULE_LICENSE tags such as these

WARNING: modpost: missing MODULE_LICENSE() in drivers/bus/omap_l3_noc.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/bus/omap_l3_smx.o

For completeness, I'm also adding MODULE_AUTHOR and MODULE_DESCRIPTION
tags, but I decided to leave out the email addresses, as all three
authors are working for other companies now.

Cc: Sricharan R <sricharan@codeaurora.org>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-01-11 18:02:56 -08:00
Olof Johansson 8102324d86 TI sysc driver updates for v4.16 merge window 
We now have gotten ti-sysc driver to the point where it can parse
 interconnect target configuration from device tree instead of the
 legacy platform data. This series updates the device tree binding
 and adds parsing to the driver for quirks and capabilities.
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Merge tag 'omap-for-v4.16/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

TI sysc driver updates for v4.16 merge window

We now have gotten ti-sysc driver to the point where it can parse
interconnect target configuration from device tree instead of the
legacy platform data. This series updates the device tree binding
and adds parsing to the driver for quirks and capabilities.

* tag 'omap-for-v4.16/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Add parsing of module capabilities
  bus: ti-sysc: Handle module quirks based dts configuration
  bus: ti-sysc: Detect i2c interconnect target module based on register layout
  bus: ti-sysc: Add register bits for interconnect target modules
  bus: ti-sysc: Make omap_hwmod_sysc_fields into sysc_regbits platform data
  ARM: OMAP2+: Move all omap_hwmod_sysc_fields to omap_hwmod_common_data.c
  ARM: dts: Add generic ti,sysc compatible in addition to the custom ones
  dt-bindings: ti-sysc: Update binding for timers and capabilities

Signed-off-by: Olof Johansson <olof@lixom.net>
 2018-01-04 23:06:04 -08:00
Arnd Bergmann d84baa5a62 Allwinner fixes for 4.15 
First, one fix that adds proper regulator references for the EMAC
 external PHYs on A64 boards. The EMAC bindings were developed for 4.13,
 but reverted at the last minute. They were finalized and brought back
 for 4.15. However in the time between, regulator support for the A64
 boards was merged. When EMAC device tree changes were reintroduced,
 this was not taken into account.
 
 Second, a patch that adds OF based modalias uevent for RSB slave devices.
 This has been missing since the introduction of RSB, and recently with
 PMIC regulator support introduced for the A64, has been seen affecting
 distributions, which have the all-important PMIC mfd drivers built as
 modules, which then don't get loaded.
 
 Other minor cleanups include final conversion of raw indices to CCU
 binding macros for sun[4567]i HDMI, cleanup of dummy regulators on the
 A64 SOPINE, a SD card detection polarity fix for the Orange Pi Zero
 Plus2, and adding a missing compatible for the PMIC on the TBS A711
 tablet.
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Merge tag 'sunxi-fixes-for-4.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes

Pull "Allwinner fixes for 4.15" from Chen-Yu Tsai:

First, one fix that adds proper regulator references for the EMAC
external PHYs on A64 boards. The EMAC bindings were developed for 4.13,
but reverted at the last minute. They were finalized and brought back
for 4.15. However in the time between, regulator support for the A64
boards was merged. When EMAC device tree changes were reintroduced,
this was not taken into account.

Second, a patch that adds OF based modalias uevent for RSB slave devices.
This has been missing since the introduction of RSB, and recently with
PMIC regulator support introduced for the A64, has been seen affecting
distributions, which have the all-important PMIC mfd drivers built as
modules, which then don't get loaded.

Other minor cleanups include final conversion of raw indices to CCU
binding macros for sun[4567]i HDMI, cleanup of dummy regulators on the
A64 SOPINE, a SD card detection polarity fix for the Orange Pi Zero
Plus2, and adding a missing compatible for the PMIC on the TBS A711
tablet.

* tag 'sunxi-fixes-for-4.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  ARM: dts: sun8i: a711: Reinstate the PMIC compatible
  arm64: dts: orange-pi-zero-plus2: fix sdcard detect
  arm64: allwinner: a64-sopine: Fix to use dcdc1 regulator instead of vcc3v3
  ARM: dts: sunxi: Convert to CCU index macros for HDMI controller
  sunxi-rsb: Include OF based modalias in device uevent
  arm64: allwinner: a64: add Ethernet PHY regulator for several boards
 2018-01-04 17:06:25 +01:00
Tony Lindgren c5a2de97fb bus: ti-sysc: Add parsing of module capabilities 
We need to configure the interconnect target module based on the
device three configuration.

Let's also add a new quirk for SYSC_QUIRK_RESET_STATUS to indicate
that the SYSCONFIG reset bit changes after the reset is done.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-12-21 07:28:54 -08:00
Tony Lindgren 566a9b05e1 bus: ti-sysc: Handle module quirks based dts configuration 
Let's configure few module quirks via device tree using the
properties for "ti,no-idle-on-init", "ti,no-reset-on-init"
and "ti,sysc-delay-us".

Let's also reorder the probe a bit so we have pdata available
earlier, and move the PM runtime calls to sysc_init_module()
from sysc_read_revision().

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-12-21 07:28:54 -08:00
Tony Lindgren a7199e2b91 bus: ti-sysc: Detect i2c interconnect target module based on register layout 
We can easily detect i2c based on it's non-standard module registers that
consist of two 32-bit registers accessed in 16-bit mode.

So far we don't have other 16-bit modules, so there's currently no need
to add a custom property for 16-bit register access.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-12-21 07:28:54 -08:00
Tony Lindgren 70a65240ef bus: ti-sysc: Add register bits for interconnect target modules 
Let's add data for the known interconnect target module types by mapping
their register bits.

Note that we can handle many quirks for the older omap2 type1 modules
directly in the driver without a need for adding custom properties.

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-12-21 07:28:54 -08:00
Paul Gortmaker a248efb3d6 bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate 
The Kconfig currently controlling compilation of this code is:

config SIMPLE_PM_BUS
        bool "Simple Power-Managed Bus Driver"

...meaning that it currently is not being built as a module by anyone.

In removing the orphaned modular support in a previous patch set,
Geert indicated he'd rather see this code converted to tristate.

I normally don't do that because it extends functionality that I
can't easily run time test or even know if the use case makes sense,
but since in this case the author has nominated it as such, we do
the conversion here.

Note that doesn't change the lack of run time testing ; this change
is only tested for sucessful compile and modpost.

[geert: Ethernet is probed successfully on sh73a0/kzm9g after
        insmodding simple-pm-bus.ko]

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2017-12-13 01:54:44 +01:00
Stefan Brüns e2bf801ecd sunxi-rsb: Include OF based modalias in device uevent 
Include the OF-based modalias in the uevent sent when registering devices
on the sunxi RSB bus, so that user space has a chance to autoload the
kernel module for the device.

Fixes a regression caused by commit 3f241bfa60 ("arm64: allwinner: a64:
pine64: Use dcdc1 regulator for mmc0"). When the axp20x-rsb module for
the AXP803 PMIC is built as a module, it is not loaded and the system
ends up with an disfunctional MMC controller.

Fixes: d787dcdb9c ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Cc: stable <stable@vger.kernel.org> # 4.4.x 7a3b7cd332 of: device: Export of_device_{get_modalias, uvent_modalias} to modules
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
 2017-12-05 09:14:30 +01:00
Kim Phillips b69f63ebf5 bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left. 
Unregistering the driver before calling cpuhp_remove_multi_state() removes
any remaining hotplug cpu instances so __cpuhp_remove_state_cpuslocked()
doesn't emit this warning:

[  268.748362] Error: Removing state 147 which has instances left.
[  268.748373] ------------[ cut here ]------------
[  268.748386] WARNING: CPU: 2 PID: 5476 at kernel/cpu.c:1734 __cpuhp_remove_state_cpuslocked+0x454/0x4f0
[  268.748389] Modules linked in: arm_ccn(-) [last unloaded: arm_ccn]
[  268.748403] CPU: 2 PID: 5476 Comm: rmmod Tainted: G        W       4.14.0-rc4+ #3
[  268.748406] Hardware name: AMD Seattle/Seattle, BIOS 10:18:39 Dec  8 2016
[  268.748410] task: ffff8001a18ca000 task.stack: ffff80019c120000
[  268.748416] PC is at __cpuhp_remove_state_cpuslocked+0x454/0x4f0
[  268.748421] LR is at __cpuhp_remove_state_cpuslocked+0x448/0x4f0
[  268.748425] pc : [<ffff2000081729ec>] lr : [<ffff2000081729e0>] pstate: 60000145
[  268.748427] sp : ffff80019c127d30
[  268.748430] x29: ffff80019c127d30 x28: ffff8001a18ca000
[  268.748437] x27: ffff20000c2cb000 x26: 1fffe4000042d490
[  268.748443] x25: ffff20000216a480 x24: 0000000000000000
[  268.748449] x23: ffff20000b08e000 x22: 0000000000000001
[  268.748455] x21: 0000000000000093 x20: 00000000000016f8
[  268.748460] x19: ffff20000c2cbb80 x18: 0000ffffb5fe7c58
[  268.748466] x17: 00000000004402d0 x16: 1fffe40001864f01
[  268.748472] x15: ffff20000c4bf8b0 x14: 0000000000000000
[  268.748477] x13: 0000000000007032 x12: ffff20000829ae48
[  268.748483] x11: ffff20000c4bf000 x10: 0000000000000004
[  268.748488] x9 : 0000000000006fbc x8 : ffff20000c318a40
[  268.748494] x7 : 0000000000000000 x6 : ffff040001864f02
[  268.748500] x5 : 0000000000000000 x4 : 0000000000000000
[  268.748505] x3 : 0000000000000007 x2 : dfff200000000000
[  268.748510] x1 : 000000000000ad3d x0 : 00000000000001f0
[  268.748516] Call trace:
[  268.748521] Exception stack(0xffff80019c127bf0 to 0xffff80019c127d30)
[  268.748526] 7be0:                                   00000000000001f0 000000000000ad3d
[  268.748531] 7c00: dfff200000000000 0000000000000007 0000000000000000 0000000000000000
[  268.748535] 7c20: ffff040001864f02 0000000000000000 ffff20000c318a40 0000000000006fbc
[  268.748539] 7c40: 0000000000000004 ffff20000c4bf000 ffff20000829ae48 0000000000007032
[  268.748544] 7c60: 0000000000000000 ffff20000c4bf8b0 1fffe40001864f01 00000000004402d0
[  268.748548] 7c80: 0000ffffb5fe7c58 ffff20000c2cbb80 00000000000016f8 0000000000000093
[  268.748553] 7ca0: 0000000000000001 ffff20000b08e000 0000000000000000 ffff20000216a480
[  268.748557] 7cc0: 1fffe4000042d490 ffff20000c2cb000 ffff8001a18ca000 ffff80019c127d30
[  268.748562] 7ce0: ffff2000081729e0 ffff80019c127d30 ffff2000081729ec 0000000060000145
[  268.748566] 7d00: 00000000000001f0 0000000000000000 0001000000000000 0000000000000000
[  268.748569] 7d20: ffff80019c127d30 ffff2000081729ec
[  268.748575] [<ffff2000081729ec>] __cpuhp_remove_state_cpuslocked+0x454/0x4f0
[  268.748580] [<ffff200008172adc>] __cpuhp_remove_state+0x54/0x80
[  268.748597] [<ffff20000215dd84>] arm_ccn_exit+0x2c/0x70 [arm_ccn]
[  268.748604] [<ffff20000834cfbc>] SyS_delete_module+0x5a4/0x708
[  268.748607] Exception stack(0xffff80019c127ec0 to 0xffff80019c128000)
[  268.748612] 7ec0: 0000000019bb7258 0000000000000800 ba64d0fb3d26a800 00000000000000da
[  268.748616] 7ee0: 0000ffffb6144e28 0000ffffcd95b409 fefefefefefefeff 7f7f7f7f7f7f7f7f
[  268.748621] 7f00: 000000000000006a 1999999999999999 0000ffffb6179000 0000000000bbcc6d
[  268.748625] 7f20: 0000ffffb6176b98 0000ffffcd95c2d0 0000ffffb5fe7b58 0000ffffb6163000
[  268.748630] 7f40: 0000ffffb60ad3e0 00000000004402d0 0000ffffb5fe7c58 0000000019bb71f0
[  268.748634] 7f60: 0000ffffcd95c740 0000000000000000 0000000019bb71f0 0000000000416700
[  268.748639] 7f80: 0000000000000000 00000000004402e8 0000000019bb6010 0000ffffcd95c748
[  268.748643] 7fa0: 0000000000000000 0000ffffcd95c460 00000000004113a8 0000ffffcd95c460
[  268.748648] 7fc0: 0000ffffb60ad3e8 0000000080000000 0000000019bb7258 000000000000006a
[  268.748652] 7fe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[  268.748657] [<ffff200008084f9c>] __sys_trace_return+0x0/0x4
[  268.748661] ---[ end trace a996d358dcaa7f9c ]---

Fixes: 8df038725a ("bus/arm-ccn: Use cpu-hp's multi instance support instead custom list")
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org # 4.8+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-12-04 17:15:20 +00:00
Marc Zyngier 4608af8aa5 bus: arm-cci: Fix use of smp_processor_id() in preemptible context 
The ARM CCI driver seem to be using smp_processor_id() in a
preemptible context, which is likely to make a DEBUG_PREMPT
kernel scream at boot time.

Turn this into a get_cpu()/put_cpu() that extends over the CPU
hotplug registration, making sure that we don't race against
a CPU down operation.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-12-04 16:56:43 +00:00
Marc Zyngier b18c2b9487 bus: arm-ccn: Fix use of smp_processor_id() in preemptible context 
Booting a DEBUG_PREEMPT enabled kernel on a CCN-based system
results in the following splat:

[...]
arm-ccn e8000000.ccn: No access to interrupts, using timer.
BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1
caller is debug_smp_processor_id+0x1c/0x28
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.13.0 #6111
Hardware name: AMD Seattle/Seattle, BIOS 17:08:23 Jun 26 2017
Call trace:
[<ffff000008089e78>] dump_backtrace+0x0/0x278
[<ffff00000808a22c>] show_stack+0x24/0x30
[<ffff000008bc3bc4>] dump_stack+0x8c/0xb0
[<ffff00000852b534>] check_preemption_disabled+0xfc/0x100
[<ffff00000852b554>] debug_smp_processor_id+0x1c/0x28
[<ffff000008551bd8>] arm_ccn_probe+0x358/0x4f0
[...]

as we use smp_processor_id() in the wrong context.

Turn this into a get_cpu()/put_cpu() that extends over the CPU hotplug
registration, making sure that we don't race against a CPU down operation.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-12-04 16:53:26 +00:00
Christophe JAILLET 0f9afd36ba bus: arm-ccn: Simplify code 
Use 'devm_kasprintf()' to simplify the code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-12-04 16:49:50 +00:00
Christophe JAILLET 24771179c5 bus: arm-ccn: Check memory allocation failure 
Check memory allocation failures and return -ENOMEM in such cases

This avoids a potential NULL pointer dereference.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-12-04 16:48:53 +00:00
Arvind Yadav 8a84bf4514 bus: arm-ccn: constify attribute_group structures. 
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   9074	   5592	    416	  15082	   3aea	drivers/bus/arm-ccn.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   9327	   5336	    416	  15079	   3ae7	drivers/bus/arm-ccn.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-12-04 16:38:51 +00:00
Linus Torvalds cf9b0772f2 ARM: SoC driver updates for v4.15 
This branch contains platform-related driver updates for ARM and ARM64,
 these are the areas that bring the changes:
 
 New drivers:
  - Driver support for Renesas R-Car V3M (R8A77970)
  - Power management support for Amlogic GX
  - A new driver for the Tegra BPMP thermal sensor
  - A new bus driver for Technologic Systems NBUS
 
 Changes for subsystems that prefer to merge through arm-soc:
  - The usual updates for reset controller drivers from Philipp Zabel,
    with five added drivers for SoCs in the arc, meson, socfpa, uniphier
    and mediatek families.
  - Updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
    Heiner Kallweit and Lorenzo Pieralisi.
 
 Changes specific to some ARM-based SoC
  - The Freescale/NXP DPAA QBMan drivers from PowerPC can now work
    on ARM as well.
  - Several changes for power management on Broadcom SoCs
  - Various improvements on Qualcomm, Broadcom, Amlogic, Atmel, Mediatek
  - Minor Cleanups for Samsung, TI OMAP SoCs
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "This branch contains platform-related driver updates for ARM and
  ARM64, these are the areas that bring the changes:

  New drivers:

   - driver support for Renesas R-Car V3M (R8A77970)

   - power management support for Amlogic GX

   - a new driver for the Tegra BPMP thermal sensor

   - a new bus driver for Technologic Systems NBUS

  Changes for subsystems that prefer to merge through arm-soc:

   - the usual updates for reset controller drivers from Philipp Zabel,
     with five added drivers for SoCs in the arc, meson, socfpa,
     uniphier and mediatek families

   - updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
     Heiner Kallweit and Lorenzo Pieralisi

  Changes specific to some ARM-based SoC

   - the Freescale/NXP DPAA QBMan drivers from PowerPC can now work on
     ARM as well

   - several changes for power management on Broadcom SoCs

   - various improvements on Qualcomm, Broadcom, Amlogic, Atmel,
     Mediatek

   - minor Cleanups for Samsung, TI OMAP SoCs"

[ NOTE! This doesn't work without the previous ARM SoC device-tree pull,
  because the R8A77970 driver is missing a header file that came from
  that pull.

  The fact that this got merged afterwards only fixes it at this point,
  and bisection of that driver will fail if/when you walk into the
  history of that driver.           - Linus ]

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (96 commits)
  soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloader
  bus: add driver for the Technologic Systems NBUS
  memory: omap-gpmc: Remove deprecated gpmc_update_nand_reg()
  soc: qcom: remove unused label
  soc: amlogic: gx pm domain: add PM and OF dependencies
  drivers/firmware: psci_checker: Add missing destroy_timer_on_stack()
  dt-bindings: power: add amlogic meson power domain bindings
  soc: amlogic: add Meson GX VPU Domains driver
  soc: qcom: Remote filesystem memory driver
  dt-binding: soc: qcom: Add binding for rmtfs memory
  of: reserved_mem: Accessor for acquiring reserved_mem
  of/platform: Generalize /reserved-memory handling
  soc: mediatek: pwrap: fix fatal compiler error
  soc: mediatek: pwrap: fix compiler errors
  arm64: mediatek: cleanup message for platform selection
  soc: Allow test-building of MediaTek drivers
  soc: mediatek: place Kconfig for all SoC drivers under menu
  soc: mediatek: pwrap: add support for MT7622 SoC
  soc: mediatek: pwrap: add common way for setup CS timing extenstion
  soc: mediatek: pwrap: add MediaTek MT6380 as one slave of pwrap
  ..
 2017-11-16 16:05:01 -08:00
Linus Torvalds 8c60969856 ARM: SoC platform updates for 4.15 
Most of the commits are for defconfig changes, to enable newly added
 drivers or features that people have started using. For the changed
 lines lines, we have mostly cleanups, the affected platforms are
 OMAP, Versatile, EP93xx, Samsung, Broadcom, i.MX, and Actions.
 
 The largest single change is the introduction of the TI "sysc" bus
 driver, with the intention of cleaning up more legacy code.
 
 Two new SoC platforms get added this time:
 - Allwinner R40 is a modernized version of the A20 chip, now
   with a Quad-Core ARM Cortex-A7. According to the manufacturer,
   it is intended for "Smart Hardware"
 - Broadcom Hurricane 2 (Aka Strataconnect BCM5334X) is a family
   of chips meant for managed gigabit ethernet switches, based
   around a Cortex-A9 CPU.
 
 Finally, we gain SMP support for two platforms: Renesas R-Car E2
 and Amlogic Meson8/8b, which were previously added but only supported
 uniprocessor operation.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Arnd Bergmann:
 "Most of the commits are for defconfig changes, to enable newly added
  drivers or features that people have started using. For the changed
  lines lines, we have mostly cleanups, the affected platforms are OMAP,
  Versatile, EP93xx, Samsung, Broadcom, i.MX, and Actions.

  The largest single change is the introduction of the TI "sysc" bus
  driver, with the intention of cleaning up more legacy code.

  Two new SoC platforms get added this time:

   - Allwinner R40 is a modernized version of the A20 chip, now with a
     Quad-Core ARM Cortex-A7. According to the manufacturer, it is
     intended for "Smart Hardware"

   - Broadcom Hurricane 2 (Aka Strataconnect BCM5334X) is a family of
     chips meant for managed gigabit ethernet switches, based around a
     Cortex-A9 CPU.

  Finally, we gain SMP support for two platforms: Renesas R-Car E2 and
  Amlogic Meson8/8b, which were previously added but only supported
  uniprocessor operation"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (118 commits)
  ARM: multi_v7_defconfig: Select RPMSG_VIRTIO as module
  ARM: multi_v7_defconfig: enable CONFIG_GPIO_UNIPHIER
  arm64: defconfig: enable CONFIG_GPIO_UNIPHIER
  ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b
  ARM: meson: Add SMP bringup code for Meson8 and Meson8b
  ARM: smp_scu: allow the platform code to read the SCU CPU status
  ARM: smp_scu: add a helper for powering on a specific CPU
  dt-bindings: Amlogic: Add Meson8 and Meson8b SMP related documentation
  ARM: OMAP3: Delete an unnecessary variable initialisation in omap3xxx_hwmod_init()
  ARM: OMAP3: Use common error handling code in omap3xxx_hwmod_init()
  ARM: defconfig: select the right SX150X driver
  arm64: defconfig: Enable QCOM_IOMMU
  arm64: Add ThunderX drivers to defconfig
  arm64: defconfig: Enable Tegra PCI controller
  cpufreq: imx6q: Move speed grading check to cpufreq driver
  arm64: defconfig: re-enable Qualcomm DB410c USB
  ARM: configs: stm32: Add MDMA support in STM32 defconfig
  ARM: imx: Enable cpuidle for i.MX6DL starting at 1.1
  bus: ti-sysc: Fix unbalanced pm_runtime_enable by adding remove
  bus: ti-sysc: mark PM functions as __maybe_unused
  ...
 2017-11-16 14:05:12 -08:00
Linus Torvalds c9b012e5f4 arm64 updates for 4.15 
Plenty of acronym soup here:
 
 - Initial support for the Scalable Vector Extension (SVE)
 - Improved handling for SError interrupts (required to handle RAS events)
 - Enable GCC support for 128-bit integer types
 - Remove kernel text addresses from backtraces and register dumps
 - Use of WFE to implement long delay()s
 - ACPI IORT updates from Lorenzo Pieralisi
 - Perf PMU driver for the Statistical Profiling Extension (SPE)
 - Perf PMU driver for Hisilicon's system PMUs
 - Misc cleanups and non-critical fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "The big highlight is support for the Scalable Vector Extension (SVE)
  which required extensive ABI work to ensure we don't break existing
  applications by blowing away their signal stack with the rather large
  new vector context (<= 2 kbit per vector register). There's further
  work to be done optimising things like exception return, but the ABI
  is solid now.

  Much of the line count comes from some new PMU drivers we have, but
  they're pretty self-contained and I suspect we'll have more of them in
  future.

  Plenty of acronym soup here:

   - initial support for the Scalable Vector Extension (SVE)

   - improved handling for SError interrupts (required to handle RAS
     events)

   - enable GCC support for 128-bit integer types

   - remove kernel text addresses from backtraces and register dumps

   - use of WFE to implement long delay()s

   - ACPI IORT updates from Lorenzo Pieralisi

   - perf PMU driver for the Statistical Profiling Extension (SPE)

   - perf PMU driver for Hisilicon's system PMUs

   - misc cleanups and non-critical fixes"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (97 commits)
  arm64: Make ARMV8_DEPRECATED depend on SYSCTL
  arm64: Implement __lshrti3 library function
  arm64: support __int128 on gcc 5+
  arm64/sve: Add documentation
  arm64/sve: Detect SVE and activate runtime support
  arm64/sve: KVM: Hide SVE from CPU features exposed to guests
  arm64/sve: KVM: Treat guest SVE use as undefined instruction execution
  arm64/sve: KVM: Prevent guests from using SVE
  arm64/sve: Add sysctl to set the default vector length for new processes
  arm64/sve: Add prctl controls for userspace vector length management
  arm64/sve: ptrace and ELF coredump support
  arm64/sve: Preserve SVE registers around EFI runtime service calls
  arm64/sve: Preserve SVE registers around kernel-mode NEON use
  arm64/sve: Probe SVE capabilities and usable vector lengths
  arm64: cpufeature: Move sys_caps_initialised declarations
  arm64/sve: Backend logic for setting the vector length
  arm64/sve: Signal handling support
  arm64/sve: Support vector length resetting for new processes
  arm64/sve: Core task context handling
  arm64/sve: Low-level CPU setup
  ...
 2017-11-15 10:56:56 -08:00
Sebastien Bourdelin 5b143d2a6e bus: add driver for the Technologic Systems NBUS 
This driver implements a GPIOs bit-banged bus, called the NBUS by
Technologic Systems. It is used to communicate with the peripherals in
the FPGA on the TS-4600 SoM.

Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2017-11-07 16:28:19 +01:00
Suzuki K Poulose c7f5828bf7 arm-ccn: perf: Prevent module unload while PMU is in use 
When the PMU driver is built as a module, the perf expects the
pmu->module to be valid, so that the driver is prevented from
being unloaded while it is in use. Fix the CCN pmu driver to
fill in this field.

Fixes: a33b0daab7 ("bus: ARM CCN PMU driver")
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
 2017-11-03 15:24:06 +00:00
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-11-02 11:10:55 +01:00
Tony Lindgren 684be5a48f bus: ti-sysc: Fix unbalanced pm_runtime_enable by adding remove 
Looks like we're missing remove() that's needed if a driver instance
rebound. Otherwise we will get "Unbalanced pm_runtime_enable!".

Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-10-13 10:48:40 -07:00
Arnd Bergmann a4a5d493eb bus: ti-sysc: mark PM functions as __maybe_unused 
The new bus driver causes a harmless compile-time warning when
CONFIG_PM is disabled:

drivers/bus/ti-sysc.c:440:12: error: 'sysc_runtime_resume' defined but not used [-Werror=unused-function]
 static int sysc_runtime_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~
drivers/bus/ti-sysc.c:421:12: error: 'sysc_runtime_suspend' defined but not used [-Werror=unused-function]
 static int sysc_runtime_suspend(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~

This marks the two unused functions as __maybe_unused to shut up
that warning.

Fixes: 0eecc636e5 ("bus: ti-sysc: Add minimal TI sysc interconnect target driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-10-13 10:27:17 -07:00
Jan Luebbe 2bbbd96357 bus: mbus: fix window size calculation for 4GB windows 
At least the Armada XP SoC supports 4GB on a single DRAM window. Because
the size register values contain the actual size - 1, the MSB is set in
that case. For example, the SDRAM window's control register's value is
0xffffffe1 for 4GB (bits 31 to 24 contain the size).

The MBUS driver reads back each window's size from registers and
calculates the actual size as (control_reg | ~DDR_SIZE_MASK) + 1, which
overflows for 32 bit values, resulting in other miscalculations further
on (a bad RAM window for the CESA crypto engine calculated by
mvebu_mbus_setup_cpu_target_nooverlap() in my case).

This patch changes the type in 'struct mbus_dram_window' from u32 to
u64, which allows us to keep using the same register calculation code in
most MBUS-using drivers (which calculate ->size - 1 again).

Fixes: fddddb52a6 ("bus: introduce an Marvell EBU MBus driver")
CC: stable@vger.kernel.org
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
 2017-10-12 15:01:30 +02:00
Tony Lindgren 0eecc636e5 bus: ti-sysc: Add minimal TI sysc interconnect target driver 
We can handle the sysc interconnect target module in a generic way
for many TI SoCs. Initially let's just enable runtime PM with
autosuspend, and probe the children. This can already be used for
idling interconnect target modules that don't have any device driver
available for the child devices.

For now, the "ti,hwmods" custom binding is still required. That will
be eventually deprecated in later patches. And more features will be
added, such as parsing for sysc capabilities so we can continue
removing the legacy platform data.

Cc: Benoît Cousson <bcousson@baylibre.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Matthijs van Duin <matthijsvanduin@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-10-10 14:23:43 -07:00
Linus Torvalds ae46654bcf ARM: SoC driver updates for v4.14 
This branch contains platform-related driver updates for ARM and ARM64.
 
 Among them:
 
  - Reset driver updates:
   + New API for dealing with arrays of resets
   + Make unimplemented {de,}assert return success on shared resets
   + MSDKv1 driver
   + Removal of obsolete Gemini reset driver
   + Misc updates for sunxi and Uniphier
 
  - SoC drivers:
   + Platform SoC driver registration on Tegra
   + Shuffle of Qualcomm drivers into a submenu
   + Allwinner A64 support for SRAM
   + Renesas R-Car R3 support
   + Power domains for Rockchip RK3366
 
  - Misc updates and smaller fixes for TEE and memory driver subsystems
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "This branch contains platform-related driver updates for ARM and ARM64.

  Among them:

   - Reset driver updates:
     + New API for dealing with arrays of resets
     + Make unimplemented {de,}assert return success on shared resets
     + MSDKv1 driver
     + Removal of obsolete Gemini reset driver
     + Misc updates for sunxi and Uniphier

   - SoC drivers:
     + Platform SoC driver registration on Tegra
     + Shuffle of Qualcomm drivers into a submenu
     + Allwinner A64 support for SRAM
     + Renesas R-Car R3 support
     + Power domains for Rockchip RK3366

   - Misc updates and smaller fixes for TEE and memory driver
     subsystems"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set
  soc/tegra: fuse: Add missing semi-colon
  soc/tegra: Restrict SoC device registration to Tegra
  drivers: soc: sunxi: add support for A64 and its SRAM C
  drivers: soc: sunxi: add support for remapping func value to reg value
  drivers: soc: sunxi: fix error processing on base address when claiming
  dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
  bus: sunxi-rsb: Enable by default for ARM64
  soc/tegra: Register SoC device
  firmware: tegra: set drvdata earlier
  memory: Convert to using %pOF instead of full_name
  soc: Convert to using %pOF instead of full_name
  bus: Convert to using %pOF instead of full_name
  firmware: Convert to using %pOF instead of full_name
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC
  soc: mediatek: add header files required for MT7622 SCPSYS dt-binding
  soc: mediatek: reduce code duplication of scpsys_probe across all SoCs
  dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC
  reset: uniphier: add analog amplifiers reset control
  reset: uniphier: add video input subsystem reset control
  ...
 2017-09-10 20:40:00 -07:00
Arnd Bergmann 2e9a41dca3 Allwinner driver changes for 4.14 
Usual driver changes:
 
   - SUNXI_RSB bus driver enabled by default for ARM64
 
   - Support for SRAM controller and SRAM C block on the A64 added
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Merge tag 'sunxi-drivers-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/drivers

Pull "Allwinner driver changes for 4.14" from Chen-Yu Tsai:

Usual driver changes:

  - SUNXI_RSB bus driver enabled by default for ARM64

  - Support for SRAM controller and SRAM C block on the A64 added

* tag 'sunxi-drivers-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  drivers: soc: sunxi: add support for A64 and its SRAM C
  drivers: soc: sunxi: add support for remapping func value to reg value
  drivers: soc: sunxi: fix error processing on base address when claiming
  dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
  bus: sunxi-rsb: Enable by default for ARM64
 2017-08-21 09:25:22 +02:00
Arnd Bergmann 2ad93fa37f Non-urgent fixes for omaps for v4.14 merge window. These all 
can wait for the merge window as we have not seemed to hit
 any of these so far:
 
 - Fix error handling in omap_ocp2scp_probe affecting runtime
   PM error path
 
 - Drop broken RPM status update for omap_device
 
 - Two fixes for of_irq_get() usage that can return 0
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Merge tag 'omap-for-v4.14/fixes-not-urgent-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

Pull "non-urgent fixes for omaps for v4.14" from Tony Lindgren:

Non-urgent fixes for omaps for v4.14 merge window. These all
can wait for the merge window as we have not seemed to hit
any of these so far:

- Fix error handling in omap_ocp2scp_probe affecting runtime
  PM error path

- Drop broken RPM status update for omap_device

- Two fixes for of_irq_get() usage that can return 0

* tag 'omap-for-v4.14/fixes-not-urgent-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP4+: PRM: fix of_irq_get() result checks
  ARM: OMAP3+: PRM: fix of_irq_get() result check
  ARM: OMAP2+: omap_device: drop broken RPM status update from suspend_noirq
  bus: omap-ocp2scp: Fix error handling in omap_ocp2scp_probe
 2017-08-19 00:07:56 +02:00
Jagan Teki dc1a37b2b9 bus: sunxi-rsb: Enable by default for ARM64 
Allwinner's A64 SoC uses the "Reduced Serial Bus" to communicate with
its companion PMIC.

Since arm64 does not have separate defconfigs for each platform or
processor family, enable this driver by default for ARM64 as well.
Note that the Kconfig symbol already depends on ARCH_SUNXI.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[wens@csie.org: Refined commit message]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
 2017-08-18 14:30:15 +08:00
Rob Herring 9c0982d809 bus: Convert to using %pOF instead of full_name 
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2017-08-16 17:21:40 +02:00
Masahiro Yamada 2f4233ee13 bus: uniphier-system-bus: set up registers when resuming 
When resuming, set up registers that have been lost in the sleep state.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2017-08-04 12:57:18 +02:00
Kishon Vijay Abraham I 672647afab bus: omap-ocp2scp: Fix error handling in omap_ocp2scp_probe 
The error handling code in omap_ocp2scp_probe fails to invoke
pm_runtime_disable and fails to initialize return value in
certain cases. Fix it here.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
 2017-07-12 02:25:41 -07:00
Linus Torvalds af3c8d9850 main drm pull for v4.13 
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Merge tag 'drm-for-v4.13' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main pull request for the drm, I think I've got one later
  driver pull for mediatek SoC driver, I'm undecided on if it needs to
  go to you yet.

  Otherwise summary below:

  Core drm:
   - Atomic add driver private objects
   - Deprecate preclose hook in modern drivers
   - MST bandwidth tracking
   - Use kvmalloc in more places
   - Add mode_valid hook for crtc/encoder/bridge
   - Reduce sync_file construction time
   - Documentation updates
   - New DRM synchronisation object support

  New drivers:
   - pl111 - pl111 CLCD display controller

  Panel:
   - Innolux P079ZCA panel driver
   - Add NL12880B20-05, NL192108AC18-02D, P320HVN03 panels
   - panel-samsung-s6e3ha2: Add s6e3hf2 panel support

  i915:
   - SKL+ watermark fixes
   - G4x/G33 reset improvements
   - DP AUX backlight improvements
   - Buffer based GuC/host communication
   - New getparam for (sub)slice infomation
   - Cannonlake and Coffeelake initial patches
   - Execbuf optimisations

  radeon/amdgpu:
   - Lots of Vega10 bug fixes
   - Preliminary raven support
   - KIQ support for compute rings
   - MEC queue management rework
   - DCE6 Audio support
   - SR-IOV improvements
   - Better radeon/amdgpu selection support

  nouveau:
   - HDMI stereoscopic support
   - Display code rework for >= GM20x GPUs

  msm:
   - GEM rework for fine-grained locking
   - Per-process pagetable work
   - HDMI fixes for Snapdragon 820.

  vc4:
   - Remove 256MB CMA limit from vc4
   - Add out-fence support
   - Add support for cygnus
   - Get/set tiling ioctls support
   - Add T-format tiling support for scanout

  zte:
   - add VGA support.

  etnaviv:
   - Thermal throttle support for newer GPUs
   - Restore userspace buffer cache performance
   - dma-buf sync fix

  stm:
   - add stm32f429 display support

  exynos:
   - Rework vblank handling
   - Fixup sw-trigger code

  sun4i:
   - V3s display engine support
   - HDMI support for older SoCs
   - Preliminary work on dual-pipeline SoCs.

  rcar-du:
   - VSP work

  imx-drm:
   - Remove counter load enable from PRE
   - Double read/write reduction flag support

  tegra:
   - Documentation for the host1x and drm driver.
   - Lots of staging ioctl fixes due to grate project work.

  omapdrm:
   - dma-buf fence support
   - TILER rotation fixes"

* tag 'drm-for-v4.13' of git://people.freedesktop.org/~airlied/linux: (1270 commits)
  drm: Remove unused drm_file parameter to drm_syncobj_replace_fence()
  drm/amd/powerplay: fix bug fail to remove sysfs when rmmod amdgpu.
  amdgpu: Set cik/si_support to 1 by default if radeon isn't built
  drm/amdgpu/gfx9: fix driver reload with KIQ
  drm/amdgpu/gfx8: fix driver reload with KIQ
  drm/amdgpu: Don't call amd_powerplay_destroy() if we don't have powerplay
  drm/ttm: Fix use-after-free in ttm_bo_clean_mm
  drm/amd/amdgpu: move get memory type function from early init to sw init
  drm/amdgpu/cgs: always set reference clock in mode_info
  drm/amdgpu: fix vblank_time when displays are off
  drm/amd/powerplay: power value format change for Vega10
  drm/amdgpu/gfx9: support the amdgpu.disable_cu option
  drm/amd/powerplay: change PPSMC_MSG_GetCurrPkgPwr for Vega10
  drm/amdgpu: Make amdgpu_cs_parser_init static (v2)
  drm/amdgpu/cs: fix a typo in a comment
  drm/amdgpu: Fix the exported always on CU bitmap
  drm/amdgpu/gfx9: gfx_v9_0_enable_gfx_static_mg_power_gating() can be static
  drm/amdgpu/psp: upper_32_bits/lower_32_bits for address setup
  drm/amd/powerplay/cz: print message if smc message fails
  drm/amdgpu: fix typo in amdgpu_debugfs_test_ib_init
  ...
 2017-07-09 18:48:37 -07:00
Linus Torvalds e854711291 ARM: SoC driver updates 
- New SoC specific drivers
   - NVIDIA Tegra PM Domain support for newer SoCs (Tegra186 and later)
     based on the "BPMP" firmware
   - Clocksource and system controller drivers for the newly added
     Action Semi platforms (both arm and arm64).
 
 - Reset subsystem, merged through arm-soc by tradition:
   - New drivers for Altera Stratix10, TI Keystone and Cortina Gemini SoCs
   - Various subsystem-wide cleanups
 
 - Updates for existing SoC-specific drivers
   - TI GPMC (General Purpose Memory Controller)
   - Mediatek "scpsys" system controller support for MT6797
   - Broadcom "brcmstb_gisb" bus arbitrer
   - ARM SCPI firmware
   - Renesas "SYSC" system controller
 
 One more driver update was submitted for the Freescale/NXP DPAA
 data path acceleration that has previously been used on PowerPC
 chips. I ended up postponing the merge until some API questions
 for its unusual MMIO access are resolved.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "New SoC specific drivers:

   - NVIDIA Tegra PM Domain support for newer SoCs (Tegra186 and later)
     based on the "BPMP" firmware

   - Clocksource and system controller drivers for the newly added
     Action Semi platforms (both arm and arm64).

  Reset subsystem, merged through arm-soc by tradition:

   - New drivers for Altera Stratix10, TI Keystone and Cortina Gemini
     SoCs

   - Various subsystem-wide cleanups

  Updates for existing SoC-specific drivers

   - TI GPMC (General Purpose Memory Controller)

   - Mediatek "scpsys" system controller support for MT6797

   - Broadcom "brcmstb_gisb" bus arbitrer

   - ARM SCPI firmware

   - Renesas "SYSC" system controller

  One more driver update was submitted for the Freescale/NXP DPAA data
  path acceleration that has previously been used on PowerPC chips. I
  ended up postponing the merge until some API questions for its unusual
  MMIO access are resolved"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits)
  clocksource: owl: Add S900 support
  clocksource: Add Owl timer
  soc: renesas: rcar-sysc: Use GENPD_FLAG_ALWAYS_ON
  firmware: tegra: Fix locking bugs in BPMP
  soc/tegra: flowctrl: Fix error handling
  soc/tegra: bpmp: Implement generic PM domains
  soc/tegra: bpmp: Update ABI header
  PM / Domains: Allow overriding the ->xlate() callback
  soc: brcmstb: enable drivers for ARM64 and BMIPS
  soc: renesas: Rework Kconfig and Makefile logic
  reset: Add the TI SCI reset driver
  dt-bindings: reset: Add TI SCI reset binding
  reset: use kref for reference counting
  soc: qcom: smsm: Improve error handling, quiesce probe deferral
  cpufreq: scpi: use new scpi_ops functions to remove duplicate code
  firmware: arm_scpi: add support to populate OPPs and get transition latency
  dt-bindings: reset: Add reset manager offsets for Stratix10
  memory: omap-gpmc: add error message if bank-width property is absent
  memory: omap-gpmc: make dts snippet include semicolon
  reset: Add a Gemini reset controller
  ...
 2017-07-04 14:47:47 -07:00
Velibor Markovski 2941be2166 bus: arm-ccn: Enable stats for CCN-502 interconnect 
Add compatible string for the ARM CCN-502 interconnect

Signed-off-by: Velibor Markovski <velibor.markovski@broadcom.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-06-23 15:46:38 +01:00
Markus Elfring 0a240c5b42 bus: arm-ccn: Use devm_kcalloc() in arm_ccn_probe() 
Multiplications for the size determination of memory allocations
indicated that array data structures should be processed.
Thus use the corresponding function "devm_kcalloc".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-06-23 15:46:36 +01:00
Javier Martinez Canillas 60aba820de bus: arm-ccn: Fix module autoload 
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/bus/arm-ccn.ko | grep alias
$

After this patch:

$ modinfo drivers/bus/arm-ccn.ko | grep alias
alias:          of:N*T*Carm,ccn-504C*
alias:          of:N*T*Carm,ccn-504

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2017-06-23 15:46:35 +01:00
Rob Clark 51c9fbe694 bus: SIMPLE_PM_BUS does not depend on ARCH_RENESAS 
In fact, it is needed for PCI to work on msm8996 (and probably other
things).  No idea why it was depending on renesas but that doesn't make
any sense.  So drop the dependency.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
 2017-06-17 08:03:08 -04:00
Doug Berger d523e0cfdc bus: brcmstb_gisb: update to support new revision 
The 7278 introduces a new version of this core.  This
commit adds support for that revision.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 2017-05-13 20:18:57 -07:00
Doug Berger 8c7aa17ad1 bus: brcmstb_gisb: enable driver for ARM64 architecture 
The ARM64 architecture can provide meaningful diagnostic
output from the GISB arbiter solely from interrupts and
notifiers without the need to hook the low level fault
handlers.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 2017-05-13 20:18:56 -07:00
Doug Berger a3d59ae870 bus: brcmstb_gisb: remove low-level ARM hooks 
The ARM architecture can provide meaningful diagnostic
output from the GISB arbiter solely from interrupts and
notifiers without the need to hook the low level fault
handlers.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 2017-05-13 20:18:56 -07:00
Doug Berger 9eb60880d9 bus: brcmstb_gisb: add notifier handling 
Check for GISB arbitration errors through a chained notifier
when a process dies or a kernel panic occurs.  This allows a
meaningful GISB diagnostic message to occur along with other
diagnostic information from the event.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 2017-05-13 20:18:55 -07:00
Doug Berger 0c2aa0e4b3 bus: brcmstb_gisb: correct support for 64-bit address output 
The GISB bus can support addresses beyond 32-bits.  So this commit
corrects support for reading a captured 64-bit address into a 64-bit
variable by obtaining the high bits from the ARB_ERR_CAP_HI_ADDR
register (when present) and then outputting the full 64-bit value.

It also removes unused definitions.

Fixes: 44127b771d ("bus: add Broadcom GISB bus arbiter timeout/error handler")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 2017-05-13 20:18:54 -07:00
Doug Berger 856c7ccb9c bus: brcmstb_gisb: Use register offsets with writes too 
This commit corrects the bug introduced in commit f80835875d
("bus: brcmstb_gisb: Look up register offsets in a table") such
that gisb_write() translates the register enumeration into an
offset from the base address for writes as well as reads.

Fixes: f80835875d ("bus: brcmstb_gisb: Look up register offsets in a table")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 2017-05-13 20:18:54 -07:00
Linus Torvalds b2e3c4319d ARM: SoC driver updates 
Driver updates for ARM SoCs.
 
 A handful of driver changes this time around. The larger changes are:
 
  - Reset drivers for hi3660 and zx2967
  - AHCI driver for Davinci, acked by Tejun and brought in here due to
    platform dependencies
  - Cleanups of atmel-ebi (External Bus Interface)
  - Tweaks for Rockchip GRF (General Register File) usage (kitchensink misc
    register range on the SoCs)
  - PM domains changes for support of two new ZTE SoCs (zx296718 and zx2967)
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "Driver updates for ARM SoCs.

  A handful of driver changes this time around. The larger changes are:

   - Reset drivers for hi3660 and zx2967

   - AHCI driver for Davinci, acked by Tejun and brought in here due to
     platform dependencies

   - Cleanups of atmel-ebi (External Bus Interface)

   - Tweaks for Rockchip GRF (General Register File) usage (kitchensink
     misc register range on the SoCs)

   - PM domains changes for support of two new ZTE SoCs (zx296718 and
     zx2967)"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits)
  soc: samsung: pmu: Add register defines for pad retention control
  reset: make zx2967 explicitly non-modular
  reset: core: fix reset_control_put
  soc: samsung: pm_domains: Read domain name from the new label property
  soc: samsung: pm_domains: Remove message about failed memory allocation
  soc: samsung: pm_domains: Remove unused name field
  soc: samsung: pm_domains: Use full names in subdomains registration log
  sata: ahci-da850: un-hardcode the MPY bits
  sata: ahci-da850: add a workaround for controller instability
  sata: ahci: export ahci_do_hardreset() locally
  sata: ahci-da850: implement a workaround for the softreset quirk
  sata: ahci-da850: add device tree match table
  sata: ahci-da850: get the sata clock using a connection id
  soc: samsung: pmu: Remove duplicated define for ARM_L2_OPTION register
  memory: atmel-ebi: Enable the SMC clock if specified
  soc: samsung: pmu: Remove unused and duplicated defines
  memory: atmel-ebi: Properly handle multiple reference to the same CS
  memory: atmel-ebi: Fix the test to enable generic SMC logic
  soc: samsung: pm_domains: Add new Exynos5433 compatible
  soc: samsung: pmu: Add dummy support for Exynos5433 SoC
  ...
 2017-02-23 15:57:04 -08:00
Linus Walleij c5d8ccfec0 bus: qcom_ebi2: default y if ARCH_QCOM 
Since we want this external bus to be available on multi_v7 builds,
set to default ARCH_QCOM so we get it selected whenever QCOM is
enabled.

Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
 2017-01-16 23:07:41 -06:00
Bartosz Golaszewski 430d7dd448 bus: da850-mstpri: fix my e-mail address 
I noticed my e-mail address is wrong in this one. This patch fixes it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
 2017-01-02 15:52:32 +05:30
Thomas Gleixner 73c1b41e63 cpu/hotplug: Cleanup state names 
When the state names got added a script was used to add the extra argument
to the calls. The script basically converted the state constant to a
string, but the cleanup to convert these strings into meaningful ones did
not happen.

Replace all the useless strings with 'subsys/xxx/yyy:state' strings which
are used in all the other places already.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/20161221192112.085444152@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2016-12-25 10:47:44 +01:00
Thomas Gleixner 26242b3300 bus: arm-ccn: Prevent hotplug callback leak 
In case the driver registration fails, the hotplug callback is leaked.

Not fatal, because it's never invoked as there are no instances registered,
but wrong nevertheless.

Fixes: fdc15a36d8 ("bus/arm-ccn: Convert to hotplug statemachine")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
 2016-12-25 10:47:40 +01:00
Linus Torvalds 991688bfc6 ARM: SoC driver updates for v4.10 
Driver updates for ARM SoCs, including a couple of newly added drivers:
 
 - A new driver for the power management controller on TI Keystone
 - Support for the prerelease "SCPI" firmware protocol that ended up
   being shipped by Amlogic in their GXBB SoC.
 - A soc_device can now be matched using a glob from inside the
   kernel, when another driver wants to know the specific chip
   it is running on and cannot find out from DT, firmware or hardware.
 - Renesas SoCs now support identification through the soc_device
   interface, both in user space and kernel.
 - Renesas r8a7743 and r8a7745 gain support for their system controller
 - A new checking module for the ARM "PSCI" (not to be confused
   with "SCPI" mentioned above) firmware interface.
 - A new driver for the Tegra GMI memory interface
 - Support for the Tegra firmware interfaces with their
   power management controllers
 
 As usual, the updates for the reset controller framework are merged
 here, as they tend to touch multiple SoCs as well, including a new
 driver for the Oxford (now Broadcom) OX820 chip and the Tegra
 bpmp interface.
 
 The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and
 Rockchips SoCs see some further updates.
 
 Conflicts:
 - ARCH_RENESAS now selects SOC_BUS, but no longer needs GPIOLIB
 - drivers/soc/renesas/Makefile: multiple files got added, keep
   all in logical sorting
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "Driver updates for ARM SoCs, including a couple of newly added
  drivers:

   - A new driver for the power management controller on TI Keystone

   - Support for the prerelease "SCPI" firmware protocol that ended up
     being shipped by Amlogic in their GXBB SoC.

   - A soc_device can now be matched using a glob from inside the
     kernel, when another driver wants to know the specific chip it is
     running on and cannot find out from DT, firmware or hardware.

   - Renesas SoCs now support identification through the soc_device
     interface, both in user space and kernel.

   - Renesas r8a7743 and r8a7745 gain support for their system
     controller

   - A new checking module for the ARM "PSCI" (not to be confused with
     "SCPI" mentioned above) firmware interface.

   - A new driver for the Tegra GMI memory interface

   - Support for the Tegra firmware interfaces with their power
     management controllers

  As usual, the updates for the reset controller framework are merged
  here, as they tend to touch multiple SoCs as well, including a new
  driver for the Oxford (now Broadcom) OX820 chip and the Tegra bpmp
  interface.

  The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and
  Rockchips SoCs see some further updates"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (76 commits)
  misc: sram: remove useless #ifdef
  drivers: psci: Allow PSCI node to be disabled
  drivers: psci: PSCI checker module
  soc: renesas: Identify SoC and register with the SoC bus
  firmware: qcom: scm: Return PTR_ERR when devm_clk_get fails
  firmware: qcom: scm: Remove core, iface and bus clocks dependency
  dt-bindings: firmware: scm: Add MSM8996 DT bindings
  memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name()
  bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name()
  ARM: shmobile: Document DT bindings for Product Register
  soc: renesas: rcar-sysc: add R8A7745 support
  reset: Add Tegra BPMP reset driver
  dt-bindings: firmware: Allow child nodes inside the Tegra BPMP
  dt-bindings: Add power domains to Tegra BPMP firmware
  firmware: tegra: Add BPMP support
  firmware: tegra: Add IVC library
  dt-bindings: firmware: Add bindings for Tegra BPMP
  mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells()
  mailbox: Add Tegra HSP driver
  firmware: arm_scpi: add support for pre-v1.0 SCPI compatible
  ...
 2016-12-15 16:03:25 -08:00
Linus Torvalds e79ab194d1 ARM: SoC platform updates for v4.10 
These are updates for platform specific code on 32-bit ARM machines,
 essentially anything that can not (yet) be expressed using DT files.
 
 Noteworthy changes include:
 
 - Added support for the TI DRA71x family of SoCs in mach-omap2,
   this is an new variant of the the DRA72x/DRA74x automotive
   infotainment chips we already supported for a while.
 
 - Added support for the ST STM32F746 SoC, the first Cortex-M7
   based microcontroller we support, related to the smaller
   STM32F4 family.
 
 - Renesas adds support for r8a7743 and r8a7745 in mach-shmobile,
   see http://elinux.org/RZ-G
 
 - SMP is now supported on the OX820 platform
 
 - A lot of code in mach-omap2 gets removed as a follow-up to
   removing support for board files in the previous release
 
 - Davinci has some new work to improve USB support
 
 - For i.MX, the performance monitor now supports profiling the
   memory controller using 'perf'
 
 Conflicts:
 arch/arm/mach-shmobile/setup-rcar-gen2.c: rcar_gen2_clocks_init()
 is gone, calling of_clk_init(NULL) is sufficient now.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Arnd Bergmann:
 "These are updates for platform specific code on 32-bit ARM machines,
  essentially anything that can not (yet) be expressed using DT files.

  Noteworthy changes include:

   - Added support for the TI DRA71x family of SoCs in mach-omap2, this
     is an new variant of the the DRA72x/DRA74x automotive infotainment
     chips we already supported for a while.

   - Added support for the ST STM32F746 SoC, the first Cortex-M7 based
     microcontroller we support, related to the smaller STM32F4 family.

   - Renesas adds support for r8a7743 and r8a7745 in mach-shmobile, see
     http://elinux.org/RZ-G

   - SMP is now supported on the OX820 platform

   - A lot of code in mach-omap2 gets removed as a follow-up to removing
     support for board files in the previous release

   - Davinci has some new work to improve USB support

   - For i.MX, the performance monitor now supports profiling the memory
     controller using 'perf'"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (95 commits)
  ARM: davinci: da830-evm: use gpio descriptor for mmc pins
  ARM: davinci: da850-evm: use gpio descriptor for mmc pins
  ARM: davinci: hawk: use gpio descriptor for mmc pins
  ARM: ARTPEC-6: add select MFD_SYSCON to MACH_ARTPEC6
  ARM: davinci: da8xx: Fix ohci device name
  ARM: oxnas: Add OX820 config and makefile entry
  ARM: oxnas: Add OX820 SMP support
  ARM: davinci: PM: fix build when da850 not compiled in
  ARM: orion5x: remove legacy support of ls-chl
  ARM: integrator: drop EBI access use syscon
  ARM: BCM5301X: Add back handler ignoring external imprecise aborts
  ARM: davinci: PM: support da8xx DT platforms
  ARM: davinci: PM: cleanup: remove references to pdata
  ARM: davinci: PM: rework init, remove platform device
  ARM: Kconfig: Introduce MACH_STM32F746 flag
  ARM: mach-stm32: Add a new SOC - STM32F746
  ARM: shmobile: document SK-RZG1E board
  ARM: shmobile: r8a7745: basic SoC support
  ARM: imx: mach-imx6ul: add imx6ull support
  ARM: zynq: Reserve correct amount of non-DMA RAM
  ...
 2016-12-15 15:39:02 -08:00
Johan Hovold c090959b9d bus: vexpress-config: fix device reference leak 
Make sure to drop the reference to the parent device taken by
class_find_device() after populating the bus.

Fixes: 3b9334ac83 ("mfd: vexpress: Convert custom func API to regmap")
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2016-11-30 23:29:37 +01:00
Arnd Bergmann 11128b9021 Fixes for drivers already queued to prevent 
section mismatch warnings introduced by them.
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Merge tag 'davinci-for-v4.10/drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers

Pull "DaVinci driver updates for v4.10 (part 2)" from Sekhar Nori:

Fixes for drivers already queued to prevent
section mismatch warnings introduced by them.

* tag 'davinci-for-v4.10/drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name()
  bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name()
 2016-11-30 14:58:00 +01:00
Bartosz Golaszewski 48c2833738 bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name() 
In order to avoid a section mismatch drop the call to
of_flat_dt_get_machine_name() when printing the error message.

While we're at it: fix a typo.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
 2016-11-23 20:26:42 +05:30
Olof Johansson 84f1f0c199 bus: Add Tegra GMI support 
This provides a driver to enable the use of the Generic Memory Interface
 found on Tegra SoCs that can host various types of high-speed devices.
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Merge tag 'tegra-for-4.10-bus' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

bus: Add Tegra GMI support

This provides a driver to enable the use of the Generic Memory Interface
found on Tegra SoCs that can host various types of high-speed devices.

* tag 'tegra-for-4.10-bus' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  bus: Add support for Tegra Generic Memory Interface
  dt/bindings: Add bindings for Tegra GMI controller

Signed-off-by: Olof Johansson <olof@lixom.net>
 2016-11-18 18:32:57 -08:00
Mirza Krak 40eb477678 bus: Add support for Tegra Generic Memory Interface 
The Generic Memory Interface bus can be used to connect high-speed
devices such as NOR flash, FPGAs, DSPs...

Signed-off-by: Mirza Krak <mirza.krak@gmail.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Colibri T20/T30 on EvalBoard V3.x and GMI-Memory Board
Acked-by: Jon Hunter <jonathanh@nvidia.com>
[treding@nvidia.com: symmetry and coding style OCD]
Signed-off-by: Thierry Reding <treding@nvidia.com>
 2016-11-15 17:27:53 +01:00
Bartosz Golaszewski 8e7223fc86 bus: davinci: add support for da8xx bus master priority control 
Create the driver for the da8xx master peripheral priority
configuration and implement support for writing to the three
Master Priority registers on da850 SoCs.

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[nsekhar@ti.com: subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
 2016-11-14 17:20:29 +05:30
Linus Walleij 5fac7e8405 bus: qcom-ebi2: depend on ARCH_QCOM or COMPILE_TEST 
This hides the option for people who do not want their Kconfig
vision cluttered (i.e. x86) and enables compile testing apart
from the supported main arch.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
 2016-10-17 13:46:09 -07:00
Lorenzo Pieralisi 801f33be8e drivers: cci: add missing CCI port availability firmware check 
The CCI ports programming interface is available to the kernel
only when booted in secure mode (or when firmware enables
non-secure access to override CCI ports control). In both cases,
firmware reports the CCI ports availability through the device
tree CCI ports nodes, which must be parsed and their status checked
by the kernel probing path.

This check is currently missing and may cause the kernel to
erroneously believe it is free to take control of CCI ports
where in practice CCI ports control is forbidden.

Add the missing CCI port availability check to the CCI driver
in order to guarantee sane CCI usage.

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
 2016-10-17 14:27:54 +01:00
Linus Torvalds 6afd563d4b ARM: SoC driver updates for v4.9 
Driver updates for ARM SoCs, including a couple of newly added drivers:
 
 - The Qualcomm external bus interface 2 (EBI2), used in some of their
   mobile phone chips for connecting flash memory, LCD displays or
   other peripherals
 
 - Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for the
   EFUSE based on that firmware interface.
 
 - Perf support for the AppliedMicro X-Gene performance monitor unit
 
 - Reset driver for STMicroelectronics STM32
 
 - Reset driver for SocioNext UniPhier SoCs
 
 Aside from these, there are minor updates to SoC-specific bus,
 clocksource, firmware, pinctrl, reset, rtc and pmic drivers.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "Driver updates for ARM SoCs, including a couple of newly added
  drivers:

   - The Qualcomm external bus interface 2 (EBI2), used in some of their
     mobile phone chips for connecting flash memory, LCD displays or
     other peripherals

   - Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for
     the EFUSE based on that firmware interface.

   - Perf support for the AppliedMicro X-Gene performance monitor unit

   - Reset driver for STMicroelectronics STM32

   - Reset driver for SocioNext UniPhier SoCs

  Aside from these, there are minor updates to SoC-specific bus,
  clocksource, firmware, pinctrl, reset, rtc and pmic drivers"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits)
  bus: qcom-ebi2: depend on HAS_IOMEM
  pinctrl: mvebu: orion5x: Generalise mv88f5181l support for 88f5181
  clk: mvebu: Add clk support for the orion5x SoC mv88f5181
  dt-bindings: EXYNOS: Add Exynos5433 PMU compatible
  clocksource: exynos_mct: Add the support for ARM64
  perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver
  Documentation: Add documentation for APM X-Gene SoC PMU DTS binding
  MAINTAINERS: Add entry for APM X-Gene SoC PMU driver
  bus: qcom: add EBI2 driver
  bus: qcom: add EBI2 device tree bindings
  rtc: rtc-pm8xxx: Add support for pm8018 rtc
  nvmem: amlogic: Add Amlogic Meson EFUSE driver
  firmware: Amlogic: Add secure monitor driver
  soc: qcom: smd: Reset rx tail rather than tx
  memory: atmel-sdramc: fix a possible NULL dereference
  reset: hi6220: allow to compile test driver on other architectures
  reset: zynq: add driver Kconfig option
  reset: sunxi: add driver Kconfig option
  reset: stm32: add driver Kconfig option
  reset: socfpga: add driver Kconfig option
  ...
 2016-10-07 21:23:40 -07:00
Linus Torvalds 597f03f9d1 Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull CPU hotplug updates from Thomas Gleixner:
 "Yet another batch of cpu hotplug core updates and conversions:

   - Provide core infrastructure for multi instance drivers so the
     drivers do not have to keep custom lists.

   - Convert custom lists to the new infrastructure. The block-mq custom
     list conversion comes through the block tree and makes the diffstat
     tip over to more lines removed than added.

   - Handle unbalanced hotplug enable/disable calls more gracefully.

   - Remove the obsolete CPU_STARTING/DYING notifier support.

   - Convert another batch of notifier users.

   The relayfs changes which conflicted with the conversion have been
   shipped to me by Andrew.

   The remaining lot is targeted for 4.10 so that we finally can remove
   the rest of the notifiers"

* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
  cpufreq: Fix up conversion to hotplug state machine
  blk/mq: Reserve hotplug states for block multiqueue
  x86/apic/uv: Convert to hotplug state machine
  s390/mm/pfault: Convert to hotplug state machine
  mips/loongson/smp: Convert to hotplug state machine
  mips/octeon/smp: Convert to hotplug state machine
  fault-injection/cpu: Convert to hotplug state machine
  padata: Convert to hotplug state machine
  cpufreq: Convert to hotplug state machine
  ACPI/processor: Convert to hotplug state machine
  virtio scsi: Convert to hotplug state machine
  oprofile/timer: Convert to hotplug state machine
  block/softirq: Convert to hotplug state machine
  lib/irq_poll: Convert to hotplug state machine
  x86/microcode: Convert to hotplug state machine
  sh/SH-X3 SMP: Convert to hotplug state machine
  ia64/mca: Convert to hotplug state machine
  ARM/OMAP/wakeupgen: Convert to hotplug state machine
  ARM/shmobile: Convert to hotplug state machine
  arm64/FP/SIMD: Convert to hotplug state machine
  ...
 2016-10-03 19:43:08 -07:00
Linus Walleij d6db68b2de bus: qcom-ebi2: depend on HAS_IOMEM 
After being asked to not depend on ARCH_QCOM* or similar,
unsurprisingly compilation fails on UM as it has no I/O
memory:

drivers/built-in.o: In function `qcom_ebi2_probe':
>> drivers/bus/qcom-ebi2.c:333: undefined reference to
   `devm_ioremap_resource'

Fix this by letting the Kconfig atleast depend on HAS_IOMEM.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
 2016-10-02 22:23:57 -07:00
Arnd Bergmann ea19b4cd61 Qualcomm EBI2 bindings and bus driver. 
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Merge tag 'qcom-ebi2-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/drivers

Pull "Qualcomm EBI2 bindings and bus driver" from Linus Walleij

* tag 'qcom-ebi2-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  bus: qcom: add EBI2 driver
  bus: qcom: add EBI2 device tree bindings

Acked-by: Andy Gross <andy.gross@linaro.org>
 2016-09-21 22:42:03 +02:00
Linus Walleij 335a127548 bus: qcom: add EBI2 driver 
This adds a driver for the Qualcomm External Bus Interface EBI2
found in the MSM8660 and APQ8060 SoCs (at least).

This was tested with the SMSC9112 ethernet on the APQ8060
Dragonboard sitting on top of the SLOW CS2.

Some of my understanding if very vague and based on guesses and
extrapolations: the documentation in APQ8060 Qualcomm Application
Processor User Guide 80-N7150-14 Rev. A describes select features but
does not document the register bit fields.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2016-09-08 15:27:05 +02:00
Suzuki K Poulose 1d3ef9c2dc arm-cci: pmu: Fix typo in event name 
For one of the CCI events exposed under sysfs, "snoop" was typo'd as
"snopp". Correct this such that users see the expected event name when
enumerating events via sysfs.

Cc: arm@kernel.org
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
 2016-09-07 21:24:42 -07:00
Sebastian Andrzej Siewior e8483b578b MIPS/BUS/CDMM: Convert to hotplug state machine 
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-14-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2016-09-06 18:30:25 +02:00
Sebastian Andrzej Siewior 8df038725a bus/arm-ccn: Use cpu-hp's multi instance support instead custom list 
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/1471024183-12666-6-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2016-09-02 20:05:06 +02:00
Sebastian Andrzej Siewior b230f0db91 bus/arm-cci: Use cpu-hp's multi instance support instead custom list 
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: rt@linutronix.de
Cc: Olof Johansson <olof@lixom.net>
Link: http://lkml.kernel.org/r/1471024183-12666-5-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2016-09-02 20:05:06 +02:00
Arnd Bergmann 7064f623c4 bus: ARM CCN PMU driver updates: 
- Fixes and improvements for XP watchpoint and events handling
 - Added missing condition checks for KVM-related exclusions
 - Improved interrupt affinity handling
 - Fix for hrtimer use in polling mode
 - Event grouping implementation improvement
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Merge tag 'ccn/fixes-for-4.8-v2' of git://git.linaro.org/people/pawel.moll/linux into fixes

Merge "bus: ARM CCN PMU driver updates" from Paweł Moll:

- Fixes and improvements for XP watchpoint and events handling
- Added missing condition checks for KVM-related exclusions
- Improved interrupt affinity handling
- Fix for hrtimer use in polling mode
- Event grouping implementation improvement

* tag 'ccn/fixes-for-4.8-v2' of git://git.linaro.org/people/pawel.moll/linux:
  bus: arm-ccn: make event groups reliable
  bus: arm-ccn: fix hrtimer registration
  bus: arm-ccn: fix PMU interrupt flags
  bus: arm-ccn: Add missing event attribute exclusions for host/guest
  bus: arm-ccn: Correct required arguments for XP PMU events
  bus: arm-ccn: Fix XP watchpoint settings bitmask
  bus: arm-ccn: Do not attempt to configure XPs for cycle counter
  bus: arm-ccn: Fix PMU handling of MN
 2016-09-02 16:11:14 +02:00
Mark Rutland d662ed2e50 bus: arm-ccn: make event groups reliable 
The CCN PMU driver leaves the counting logic always enabled, and thus
events are enabled while groups are manipulated. As each event is
stopped and read individually, this leads to arbitrary skew across event
groups, which can be seen if counting several identical events.

To avoid this, implement pmu_{enable,disable} callbacks to stop and
start all counters atomically around event manipulation. As the counters
are now stopped, we cannot poll the cycle counter to wait for events to
drain from the bus. However, as the counters are stopped and the events
will not be read regardless, we can simply allow the bus to drain
naturally.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-26 09:16:18 +01:00
Mark Rutland 5b1e01f3ce bus: arm-ccn: fix hrtimer registration 
The CCN PMU driver has a single hrtimer, used to simulate a periodic
interrupt on systems where the overflow interrupt is not possible to
use. The hrtimer is started when any event is started, and cancelled when
any event is stopped. Thus, stopping a single event is sufficient to
disable to hrtimer, and overflows (of other events) may be lost.

To avoid this, this patch reworks the hrtimer start/cancel to only occur
when the first event is added to a PMU, and the last event removed,
making use of the existing bitmap counting active events.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-26 09:16:13 +01:00
Mark Rutland 0811ef7e2f bus: arm-ccn: fix PMU interrupt flags 
Currently the IRQ core is permitted to make the CCN PMU IRQ handler
threaded, and will allow userspace to change the CPU affinity of the
interrupt behind our back. Both of these could violate our
synchronisation requirements with the core perf code, which relies upon
strict CPU affinity and disabling of interrupts to guarantee mutual
exclusion in some cases.

As with the CPU PMU drivers, we should request the interrupt with
IRQF_NOBALANCING and IRQF_NO_THREAD, to avoid these issues.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-26 09:16:07 +01:00
Pawel Moll 3249bce459 bus: arm-ccn: Add missing event attribute exclusions for host/guest 
CCN PMUs have no knowledge into VM-related origins of the memory
traffic, therefore can't handle requests for host-only or guest-only
events.

Added appropriate exclusions (they should have been there from the
beginning). This required changing the error code returned, as the
userspace tool only re-negotiates the options (exclude_guest is true by
default) only for EINVAL.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-17 11:42:46 +01:00
Pawel Moll 90d11e267a bus: arm-ccn: Correct required arguments for XP PMU events 
XP can provide events from two sources: watchpoints, observing traffic
on device ports and PMU looking at internal buses.

Unfortunately the sysfs definition of the PMU events was requiring
port number (instead of bus number) and direction (the buses are
unidirectional), as these fields were shared with the watchpoint event.

Although it does not introduce a major problem (port can be used as
bus alias and direction is simply ignored for XP PMU events), it's
better to fix it now, before external tools start depending on this
behaviour.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-17 11:42:40 +01:00
Pawel Moll b928466b21 bus: arm-ccn: Fix XP watchpoint settings bitmask 
The code setting XP watchpoint comparator and mask registers should, in
order to be fully compliant with specification, zero one or more most
significant bits of each field. In both L cases it means zeroing bit 63.
The bitmask doing this was wrong, though, zeroing bit 60 instead.
Fortunately, due to a lucky coincidence, this turned out to be fairly
innocent with the existing hardware.

Fixed now.

Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-17 10:48:59 +01:00
Pawel Moll b7c1beb278 bus: arm-ccn: Do not attempt to configure XPs for cycle counter 
Fuzzing the CCN perf driver revealed a small but definitely dangerous
mistake in the event setup code. When a cycle counter is requested, the
driver should not reconfigure the events bus at all, otherwise it will
corrupt (in most but the simplest cases) its configuration and may end
up accessing XP array out of its bounds and corrupting control
registers.

Reported-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-17 10:48:58 +01:00
Pawel Moll 4e486cba28 bus: arm-ccn: Fix PMU handling of MN 
The "Miscellaneous Node" fell through cracks of node initialisation,
as its ID is shared with HN-I.

This patch treats MN as a special case (which it is), adding separate
validation check for it and pre-defining the node ID in relevant events
descriptions. That way one can simply run:

	# perf stat -a -e ccn/mn_ecbarrier/ <workload>

Additionally, direction in the MN pseudo-events XP watchpoint
definitions is corrected to be "TX" (1) as they are defined from the
crosspoint point of view (thus barriers are transmitted from XP to MN).

Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
 2016-08-17 10:48:57 +01:00
Jon Hunter 3a99cb090b bus: tegra-aconnect: Use of_pm_clk_add_clk() 
Commit 498b5fdd40 ("PM / clk: Add support for adding a specific clock
from device-tree") add a new helper function for adding a clock from
device-tree to a device. Update the Tegra ACONNECT driver to use this
new function to simplify the driver.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
 2016-08-16 12:22:51 +02:00
Thierry Reding 2d301c0721 bus: tegra-aconnect: Make symbol tristate 
The driver uses symbols that weren't being exported in earlier versions
of the Linux kernel and hence it had to be made bool. The exports have
been merged into v4.8-rc1, so the driver can now be built as a module
again.

Signed-off-by: Thierry Reding <treding@nvidia.com>
 2016-08-16 12:19:25 +02:00
Peter Chen 557e37c05f bus: vexpress-config: add missing of_node_put after calling of_parse_phandle 
of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
 2016-08-08 14:31:09 +01:00
Linus Torvalds 43a0a98aa8 ARM: SoC driver updates for v4.8 
Driver updates for ARM SoCs.
 
 A slew of changes this release cycle. The reset driver tree, that we merge
 through arm-soc for historical reasons, is also sizable this time around.
 
 Among the changes:
 
  - clps711x: Treewide changes to compatible strings, merged here for simplicity.
  - Qualcomm: SCM firmware driver cleanups, move to platform driver
  - ux500: Major cleanups, removal of old mach-specific infrastructure.
  - Atmel external bus memory driver
  - Move of brcmstb platform to the rest of bcm
  - PMC driver updates for tegra, various fixes and improvements
  - Samsung platform driver updates to support 64-bit Exynos platforms
  - Reset controller cleanups moving to devm_reset_controller_register() APIs
  - Reset controller driver for Amlogic Meson
  - Reset controller driver for Hisilicon hi6220
  - ARM SCPI power domain support
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "Driver updates for ARM SoCs.

  A slew of changes this release cycle.  The reset driver tree, that we
  merge through arm-soc for historical reasons, is also sizable this
  time around.

  Among the changes:

   - clps711x: Treewide changes to compatible strings, merged here for simplicity.
   - Qualcomm: SCM firmware driver cleanups, move to platform driver
   - ux500: Major cleanups, removal of old mach-specific infrastructure.
   - Atmel external bus memory driver
   - Move of brcmstb platform to the rest of bcm
   - PMC driver updates for tegra, various fixes and improvements
   - Samsung platform driver updates to support 64-bit Exynos platforms
   - Reset controller cleanups moving to devm_reset_controller_register() APIs
   - Reset controller driver for Amlogic Meson
   - Reset controller driver for Hisilicon hi6220
   - ARM SCPI power domain support"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (100 commits)
  ARM: ux500: consolidate base platform files
  ARM: ux500: move soc_id driver to drivers/soc
  ARM: ux500: call ux500_setup_id later
  ARM: ux500: consolidate soc_device code in id.c
  ARM: ux500: remove cpu_is_u* helpers
  ARM: ux500: use CLK_OF_DECLARE()
  ARM: ux500: move l2x0 init to .init_irq
  mfd: db8500 stop passing around platform data
  ASoC: ab8500-codec: remove platform data based probe
  ARM: ux500: move ab8500_regulator_plat_data into driver
  ARM: ux500: remove unused regulator data
  soc: raspberrypi-power: add CONFIG_OF dependency
  firmware: scpi: add CONFIG_OF dependency
  video: clps711x-fb: Changing the compatibility string to match with the smallest supported chip
  input: clps711x-keypad: Changing the compatibility string to match with the smallest supported chip
  pwm: clps711x: Changing the compatibility string to match with the smallest supported chip
  serial: clps711x: Changing the compatibility string to match with the smallest supported chip
  irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip
  clocksource: clps711x: Changing the compatibility string to match with the smallest supported chip
  clk: clps711x: Changing the compatibility string to match with the smallest supported chip
  ...
 2016-08-01 18:36:01 -04:00
Linus Torvalds 6f888fe31d ARM: SoC cleanups for v4.8 
The cleanup branch keeps going down in size as we've completed a lot of
 the major legacy platform removals and conversions.
 
 A handful of changes this time around, some of the themes or larger sets are:
 
  - A bunch of i.MX cleanups around platform detection, init call cleanups
  - Misc fixes of missing/implicit includes
  - Removal of ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB
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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Olof Johansson:
 "The cleanup branch keeps going down in size as we've completed a lot
  of the major legacy platform removals and conversions.

  A handful of changes this time around, some of the themes or larger
  sets are:

   - A bunch of i.MX cleanups around platform detection, init call cleanups
   - Misc fixes of missing/implicit includes
   - Removal of ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB"

* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (40 commits)
  ARM: mps2: fix typo
  ARM: s3c64xx: avoid warning about 'struct device_node'
  bus: mvebu-mbus: make mvebu_mbus_syscore_ops static
  bus: mvebu-mbus: fix __iomem on register pointers
  ARM: tegra: Remove board_init_funcs array
  ARM: iop: Fix indentation
  ARM: imx: remove cpu_is_mx*()
  ARM: imx: remove last call to cpu_is_mx5*
  ARM: imx: rework mx27_pm_init() call
  ARM: imx: deconstruct mx3_idle
  ARM: imx: deconstruct mxc_rnga initialization
  ARM: imx: remove cpu_is_mx1 check
  ARM: i.MX: Do not explicitly call l2x0_of_init()
  ARM: i.MX: system.c: Tweak prefetch settings for performance
  ARM: i.MX: system.c: Replace magic numbers
  ARM: i.MX: system.c: Remove redundant errata 752271 code
  ARM: i.MX: system.c: Convert goto to if statement
  ARM: Kirkwood: fix kirkwood_pm_init() declaration/type
  ARM: Kirkwood: make kirkwood_disable_mbus_error_propagation() static
  ARM: orion5x: make orion5x_legacy_handle_irq static
  ...
 2016-08-01 18:21:13 -04:00
Linus Torvalds f64d6e2aaa DeviceTree update for 4.8: 
- Removal of most of_platform_populate() calls in arch code. Now the DT
 core code calls it in the default case and platforms only need to call
 it if they have special needs.
 
 - Use pr_fmt on all the DT core print statements.
 
 - CoreSight binding doc improvements to block name descriptions.
 
 - Add dt_to_config script which can parse dts files and list
 corresponding kernel config options.
 
 - Fix memory leak hit with a PowerMac DT.
 
 - Correct a bunch of STMicro compatible strings to use the correct
 vendor prefix.
 
 - Fix DA9052 PMIC binding doc to match what is actually used in dts
 files.
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Merge tag 'devicetree-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:

 - remove most of_platform_populate() calls in arch code.  Now the DT
   core code calls it in the default case and platforms only need to
   call it if they have special needs

 - use pr_fmt on all the DT core print statements

 - CoreSight binding doc improvements to block name descriptions

 - add dt_to_config script which can parse dts files and list
   corresponding kernel config options

 - fix memory leak hit with a PowerMac DT

 - correct a bunch of STMicro compatible strings to use the correct
   vendor prefix

 - fix DA9052 PMIC binding doc to match what is actually used in dts
   files

* tag 'devicetree-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits)
  documentation: da9052: Update regulator bindings names to match DA9052/53 DTS expectations
  xtensa: Partially Revert "xtensa: Remove unnecessary of_platform_populate with default match table"
  xtensa: Fix build error due to missing include file
  MIPS: ath79: Add missing include file
  Fix spelling errors in Documentation/devicetree
  ARM: dts: fix STMicroelectronics compatible strings
  powerpc/dts: fix STMicroelectronics compatible strings
  Documentation: dt: i2c: use correct STMicroelectronics vendor prefix
  scripts/dtc: dt_to_config - kernel config options for a devicetree
  of: fdt: mark unflattened tree as detached
  of: overlay: add resolver error prints
  coresight: document binding acronyms
  Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties
  of: use pr_fmt prefix for all console printing
  of/irq: Mark initialised interrupt controllers as populated
  of: fix memory leak related to safe_name()
  Revert "of/platform: export of_default_bus_match_table"
  of: unittest: use of_platform_default_populate() to populate default bus
  memory: omap-gpmc: use of_platform_default_populate() to populate default bus
  bus: uniphier-system-bus: use of_platform_default_populate() to populate default bus
  ...
 2016-07-30 11:32:01 -07:00
Sebastian Andrzej Siewior fdc15a36d8 bus/arm-ccn: Convert to hotplug statemachine 
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153334.768498577@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2016-07-14 09:34:40 +02:00
Sebastian Andrzej Siewior 28c94843bb bus/arm-cci: Convert to hotplug statemachine 
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Suzuki K. Poulose <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153334.679142601@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2016-07-14 09:34:39 +02:00
Ben Dooks ac29abf381 bus: mvebu-mbus: make mvebu_mbus_syscore_ops static 
Make mvebu_mbus_syscore_ops static as it does not get
used or declared outside mvebu-mbus.c to fix the following
sparse warning:

linux/drivers/bus/mvebu-mbus.c:1092:20: warning: symbol 'mvebu_mbus_syscore_ops' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
 2016-07-11 17:59:24 +02:00
Ben Dooks fce7b5ae12 bus: mvebu-mbus: fix __iomem on register pointers 
The save_cpu_target functions should take "u32 __iomem *", not a
plain "u32 *" as it is passed to register access functions. Fix
the following warnings by adding the annotation:

drivers/bus/mvebu-mbus.c:739:17: warning: incorrect type in argument 2 (different address spaces)
drivers/bus/mvebu-mbus.c:739:17:    expected void volatile [noderef] <asn:2>*addr
drivers/bus/mvebu-mbus.c:739:17:    got unsigned int [usertype] *
drivers/bus/mvebu-mbus.c:741:17: warning: incorrect type in argument 2 (different address spaces)
drivers/bus/mvebu-mbus.c:741:17:    expected void volatile [noderef] <asn:2>*addr
drivers/bus/mvebu-mbus.c:741:17:    got unsigned int [usertype] *
drivers/bus/mvebu-mbus.c:742:17: warning: incorrect type in argument 2 (different address spaces)
drivers/bus/mvebu-mbus.c:742:17:    expected void volatile [noderef] <asn:2>*addr
drivers/bus/mvebu-mbus.c:742:17:    got unsigned int [usertype] *
drivers/bus/mvebu-mbus.c:744:17: warning: incorrect type in argument 2 (different address spaces)
drivers/bus/mvebu-mbus.c:744:17:    expected void volatile [noderef] <asn:2>*addr
drivers/bus/mvebu-mbus.c:744:17:    got unsigned int [usertype] *
drivers/bus/mvebu-mbus.c:790:17: warning: incorrect type in argument 2 (different address spaces)
drivers/bus/mvebu-mbus.c:790:17:    expected void volatile [noderef] <asn:2>*addr
drivers/bus/mvebu-mbus.c:790:17:    got unsigned int [usertype] *
drivers/bus/mvebu-mbus.c:792:17: warning: incorrect type in argument 2 (different address spaces)
drivers/bus/mvebu-mbus.c:792:17:    expected void volatile [noderef] <asn:2>*addr
drivers/bus/mvebu-mbus.c:792:17:    got unsigned int [usertype] *

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
 2016-07-11 17:58:30 +02:00