Commit Graph

26 Commits

Author SHA1 Message Date
Li Yang 288014358e soc: fsl: qe: fix sparse warnings for qe.c
Fixes the following sparse warnings:
drivers/soc/fsl/qe/qe.c:426:9: warning: cast to restricted __be32
drivers/soc/fsl/qe/qe.c:528:41: warning: incorrect type in assignment (different base types)
drivers/soc/fsl/qe/qe.c:528:41:    expected unsigned long long static [addressable] [toplevel] [usertype] extended_modes
drivers/soc/fsl/qe/qe.c:528:41:    got restricted __be64 const [usertype] extended_modes

Signed-off-by: Li Yang <leoyang.li@nxp.com>
2020-03-24 19:02:22 -05:00
Rasmus Villemoes 71352b8c40 soc: fsl: qe: drop pointless check in qe_sdma_init()
The sdma member of struct qe_immap is not at offset zero, so even if
qe_immr wasn't initialized yet (i.e. NULL), &qe_immr->sdma would not
be NULL.

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:36 -06:00
Rasmus Villemoes 4c3e565cc6 soc: fsl: qe: drop use of IS_ERR_VALUE in qe_sdma_init()
Now that qe_muram_alloc() returns s32, adapt qe_sdma_init() and avoid
another few IS_ERR_VALUE() uses.

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:36 -06:00
Rasmus Villemoes 123ee6e90b soc: fsl: qe: qe.c: use of_property_read_* helpers
Instead of manually doing of_get_property/of_find_property and reading
the value by assigning to a u32* or u64* and dereferencing, use the
of_property_read_* functions.

This make the code more readable, and more importantly, is required
for this to work correctly on little-endian platforms.

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:33 -06:00
Rasmus Villemoes 43223922f9 soc: fsl: qe: drop unneeded #includes
These includes are not actually needed, and asm/rheap.h and
sysdev/fsl_soc.h are PPC-specific, hence prevent compiling QE for
other architectures.

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:30 -06:00
Rasmus Villemoes df049d1f49 soc: fsl: qe: qe.c: guard use of pvr_version_is() with CONFIG_PPC32
Commit e5c5c8d23f (soc/fsl/qe: only apply QE_General4 workaround on
affected SoCs) introduced use of pvr_version_is(), saying

    The QE_General4 workaround is only valid for the MPC832x and MPC836x
    SoCs. The other SoCs that embed a QUICC engine are not affected by this
    hardware bug and thus can use the computed divisors (this was
    successfully tested on the T1040).

I'm reading the above as saying that the errata does not apply to the
ARM-based SOCs with QUICC engine. In any case, use of pvr_version_is()
must be guarded by CONFIG_PPC32 before we can remove the PPC32
dependency from CONFIG_QUICC_ENGINE, so introduce qe_general4_errata()
to keep the necessary #ifdeffery localized to a trivial helper.

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:30 -06:00
Rasmus Villemoes 5809968538 soc: fsl: qe: replace spin_event_timeout by readx_poll_timeout_atomic
In preparation for allowing QE to be built for architectures other
than ppc, use the generic readx_poll_timeout_atomic() helper from
iopoll.h rather than the ppc-only spin_event_timeout().

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:29 -06:00
Rasmus Villemoes 77d7676a92 soc: fsl: qe: avoid ppc-specific io accessors
In preparation for allowing to build QE support for architectures
other than PPC, replace the ppc-specific io accessors by the qe_io*
macros. Done via

$ spatch --sp-file io.cocci --in-place drivers/soc/fsl/qe/

where io.cocci is

@@
expression addr, val;
@@
- out_be32(addr, val)
+ qe_iowrite32be(val, addr)

@@
expression addr;
@@
- in_be32(addr)
+ qe_ioread32be(addr)

@@
expression addr, val;
@@
- out_be16(addr, val)
+ qe_iowrite16be(val, addr)

@@
expression addr;
@@
- in_be16(addr)
+ qe_ioread16be(addr)

@@
expression addr, val;
@@
- out_8(addr, val)
+ qe_iowrite8(val, addr)

@@
expression addr;
@@
- in_8(addr)
+ qe_ioread8(addr)

@@
expression addr, clr, set;
@@
- clrsetbits_be32(addr, clr, set)
+ qe_clrsetbits_be32(addr, clr, set)

@@
expression addr, clr, set;
@@
- clrsetbits_be16(addr, clr, set)
+ qe_clrsetbits_be16(addr, clr, set)

@@
expression addr, clr, set;
@@
- clrsetbits_8(addr, clr, set)
+ qe_clrsetbits_8(addr, clr, set)

@@
expression addr, set;
@@
- setbits32(addr, set)
+ qe_setbits_be32(addr, set)

@@
expression addr, set;
@@
- setbits16(addr, set)
+ qe_setbits_be16(addr, set)

@@
expression addr, set;
@@
- setbits8(addr, set)
+ qe_setbits_8(addr, set)

@@
expression addr, clr;
@@
- clrbits32(addr, clr)
+ qe_clrbits_be32(addr, clr)

@@
expression addr, clr;
@@
- clrbits16(addr, clr)
+ qe_clrbits_be16(addr, clr)

@@
expression addr, clr;
@@
- clrbits8(addr, clr)
+ qe_clrbits_8(addr, clr)

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:29 -06:00
Rasmus Villemoes 1972194f96 soc: fsl: qe: remove space-before-tab
Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-12-09 13:54:29 -06:00
Linus Torvalds 399eb9b6cb ARM: SoC driver updates for v5.4
The branch contains driver changes that are tightly
 connected to SoC specific code. Aside from smaller
 cleanups and bug fixes, here is a list of the notable
 changes.
 
 New device drivers:
 
 - The Turris Mox router has a new "moxtet" bus driver
   for its on-board pluggable extension bus. The
   same platform also gains a firmware driver.
 
 - The Samsung Exynos family gains a new Chipid driver
   exporting using the soc device sysfs interface
 
 - A similar socinfo driver for Qualcomm Snapdragon
   chips.
 
 - A firmware driver for the NXP i.MX DSP IPC protocol
   using shared memory and a mailbox
 
 Other changes:
 
 - The i.MX reset controller driver now supports the
   NXP i.MX8MM chip
 
 - Amlogic SoC specific drivers gain support for
   the S905X3 and A311D chips
 
 - A rework of the TI Davinci framebuffer driver to
   allow important cleanups in the platform code
 
 - A couple of device drivers for removed ARM SoC
   platforms are removed. Most of the removals were
   picked up by other maintainers, this contains
   whatever was left.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "This contains driver changes that are tightly connected to SoC
  specific code. Aside from smaller cleanups and bug fixes, here is a
  list of the notable changes.

  New device drivers:

   - The Turris Mox router has a new "moxtet" bus driver for its
     on-board pluggable extension bus. The same platform also gains a
     firmware driver.

   - The Samsung Exynos family gains a new Chipid driver exporting using
     the soc device sysfs interface

   - A similar socinfo driver for Qualcomm Snapdragon chips.

   - A firmware driver for the NXP i.MX DSP IPC protocol using shared
     memory and a mailbox

  Other changes:

   - The i.MX reset controller driver now supports the NXP i.MX8MM chip

   - Amlogic SoC specific drivers gain support for the S905X3 and A311D
     chips

   - A rework of the TI Davinci framebuffer driver to allow important
     cleanups in the platform code

   - A couple of device drivers for removed ARM SoC platforms are
     removed. Most of the removals were picked up by other maintainers,
     this contains whatever was left"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (123 commits)
  bus: uniphier-system-bus: use devm_platform_ioremap_resource()
  soc: ti: ti_sci_pm_domains: Add support for exclusive and shared access
  dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared access
  firmware: ti_sci: Allow for device shared and exclusive requests
  bus: imx-weim: remove incorrect __init annotations
  fbdev: remove w90x900/nuc900 platform drivers
  spi: remove w90x900 driver
  net: remove w90p910-ether driver
  net: remove ks8695 driver
  firmware: turris-mox-rwtm: Add sysfs documentation
  firmware: Add Turris Mox rWTM firmware driver
  dt-bindings: firmware: Document cznic,turris-mox-rwtm binding
  bus: moxtet: fix unsigned comparison to less than zero
  bus: moxtet: remove set but not used variable 'dummy'
  ARM: scoop: Use the right include
  dt-bindings: power: add Amlogic Everything-Else power domains bindings
  soc: amlogic: Add support for Everything-Else power domains controller
  fbdev: da8xx: use resource management for dma
  fbdev: da8xx-fb: drop a redundant if
  fbdev: da8xx-fb: use devm_platform_ioremap_resource()
  ...
2019-09-16 15:52:38 -07:00
Olof Johansson deb0df1a99 NXP/FSL SoC driver updates for v5.3 (take 2)
DPAA2 Console driver
 - Add driver to export two char devices to dump logs for MC and
   AIOP
 
 DPAA2 DPIO driver
 - Add support for memory backed QBMan portals
 - Increase the timeout period to prevent false error
 - Add APIs to retrieve QBMan portal probing status
 
 DPAA Qman driver
 - Only make liodn fixup on powerpc SoCs with PAMU iommu
 
 QUICC Engine
 - Add support for importing qe-snums through device tree
 - Some cleanups and foot print optimzation
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Merge tag 'soc-fsl-next-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux into arm/drivers

NXP/FSL SoC driver updates for v5.3 (take 2)

DPAA2 Console driver
- Add driver to export two char devices to dump logs for MC and
  AIOP

DPAA2 DPIO driver
- Add support for memory backed QBMan portals
- Increase the timeout period to prevent false error
- Add APIs to retrieve QBMan portal probing status

DPAA Qman driver
- Only make liodn fixup on powerpc SoCs with PAMU iommu

QUICC Engine
- Add support for importing qe-snums through device tree
- Some cleanups and foot print optimzation

* tag 'soc-fsl-next-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
  soc: fsl: qe: fold qe_get_num_of_snums into qe_snums_init
  soc: fsl: qe: support fsl,qe-snums property
  dt-bindings: soc: fsl: qe: document new fsl,qe-snums binding
  soc: fsl: qe: introduce qe_get_device_node helper
  soc: fsl: qe: reduce static memory footprint by 1.7K
  soc: fsl: qe: drop useless static qualifier
  soc: fsl: fix spelling mistake "Firmaware" -> "Firmware"

Link: https://lore.kernel.org/r/20190605194511.12127-1-leoyang.li@nxp.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-07-21 20:04:02 -07:00
Mauro Carvalho Chehab 4d2e26a38f docs: powerpc: convert docs to ReST and rename to *.rst
Convert docs to ReST and add them to the arch-specific
book.

The conversion here was trivial, as almost every file there
was already using an elegant format close to ReST standard.

The changes were mostly to mark literal blocks and add a few
missing section title identifiers.

One note with regards to "--": on Sphinx, this can't be used
to identify a list, as it will format it badly. This can be
used, however, to identify a long hyphen - and "---" is an
even longer one.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> # cxl
2019-07-17 06:57:51 -03:00
Rasmus Villemoes 21560067fb soc: fsl: qe: fold qe_get_num_of_snums into qe_snums_init
The comment "No QE ever has fewer than 28 SNUMs" is false; e.g. the
MPC8309 has 14. The code path returning -EINVAL is also a recipe for
instant disaster, since the caller (qe_snums_init) uncritically
assigns the return value to the unsigned qe_num_of_snum, and would
thus proceed to attempt to copy 4GB from snum_init_46[] to the snum[]
array.

So fold the handling of the legacy fsl,qe-num-snums into
qe_snums_init, and make sure we do not end up using the snum_init_46
array in cases other than the two where we know it makes sense.

Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-06-05 14:26:52 -05:00
Rasmus Villemoes 5cfca8911d soc: fsl: qe: support fsl,qe-snums property
Add driver support for the newly introduced fsl,qe-snums property.

Conveniently, of_property_read_variable_u8_array does exactly what we
need: If the property fsl,qe-snums is found (and has an allowed size),
the array of values get copied to snums, and the return value is the
number of snums - we cannot assign directly to num_of_snums, since we
need to check whether the return value is negative.

Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-06-05 14:26:39 -05:00
Rasmus Villemoes d7fc596366 soc: fsl: qe: introduce qe_get_device_node helper
The 'try of_find_compatible_node(NULL, NULL, "fsl,qe"), fall back to
of_find_node_by_type(NULL, "qe")' pattern is repeated five
times. Factor it into a common helper.

Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-06-05 14:26:14 -05:00
Rasmus Villemoes 875f2aabfc soc: fsl: qe: reduce static memory footprint by 1.7K
The current array of struct qe_snum use 256*4 bytes for just keeping
track of the free/used state of each index, and the struct layout
means there's another 768 bytes of padding. If we just unzip that
structure, the array of snum values just use 256 bytes, while the
free/inuse state can be tracked in a 32 byte bitmap.

So this reduces the .data footprint by 1760 bytes. It also serves as
preparation for introducing another DT binding for specifying the snum
values.

Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-06-05 14:26:00 -05:00
Rasmus Villemoes f03de74d92 soc: fsl: qe: drop useless static qualifier
The local variable snum_init has no reason to have static storage duration.

Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-06-05 14:25:43 -05:00
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00
Rob Herring f55f61225a soc: fsl/qe: Use of_get_child_by_name helper
Use the of_get_child_by_name() helper instead of open coding searching
for the 'firmware' child node. This removes directly accessing the name
pointer as well.

Cc: Qiang Zhao <qiang.zhao@nxp.com>
Cc: Li Yang <leoyang.li@nxp.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-08-30 12:01:28 -05:00
Valentin Longchamp e5c5c8d23f soc/fsl/qe: only apply QE_General4 workaround on affected SoCs
The QE_General4 workaround is only valid for the MPC832x and MPC836x
SoCs. The other SoCs that embed a QUICC engine are not affected by this
hardware bug and thus can use the computed divisors (this was
successfully tested on the T1040).

Similalry to what was done in commit 8ce795cb0c ("i2c: mpc: assign the
correct prescaler from SVR") in order to avoid changes in
the device tree nodes of the QE (with maybe a variant of the compatible
property), the PVR reg is read out to find out if the workaround must be
applied or not.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Scott Wood <oss@buserror.net>
2017-04-30 01:31:52 -05:00
Valentin Longchamp 2ccf80b756 soc/fsl/qe: round brg_freq to 1kHz granularity
Because of integer computation rounding in u-boot (that sets the QE
brg-frequency DTS prop), the clk value is 99999999 Hz even though it is
100 MHz.

When setting brg clks that are exact divisors of 100 MHz, this small
differnce plays a role and can result in lower clks to be output (for
instance 20 MHz - divide by 5 - results in 16.666 MHz - divide by 6).

This patch fixes that by "forcing" the brg_clk to the nearest kHz when
the difference is below 2 integer rounding errors (i.e. 4).

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Scott Wood <oss@buserror.net>
2017-04-30 01:31:51 -05:00
Christophe Leroy b54ea82f01 soc/fsl/qe: get rid of immrbar_virt_to_phys()
immrbar_virt_to_phys() is not used anymore

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Li Yang <pku.leo@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
2017-04-30 01:26:54 -05:00
Geliang Tang c9492b4bea soc/fsl/qe: use builtin_platform_driver
Use builtin_platform_driver() helper to simplify the code.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
2016-12-04 19:52:45 -06:00
Zhao Qiang 5066943a51 soc/fsl/qe: Use of_adress_to_resource() in get_qe_base()
modify get_qe_base function with of_address_to_resource
instead of of_get_property and of_translate_address.

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-24 23:01:17 -05:00
Zhao Qiang 68f047e3d6 fsl/qe: add rx_sync and tx_sync for TDM mode
Rx_sync and tx_sync are used by QE-TDM mode,
add them to struct ucc_fast_info.

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-07 15:56:30 -07:00
Zhao Qiang 7aa1aa6ece QE: Move QE from arch/powerpc to drivers/soc
ls1 has qe and ls1 has arm cpu.
move qe from arch/powerpc to drivers/soc/fsl
to adapt to powerpc and arm

Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-12-22 17:12:56 -06:00