Commit Graph

121 Commits

Author SHA1 Message Date
Lad Prabhakar 4ecc7ff82e pinctrl: sh-pfc: r8a7790: Add r8a7742 PFC support
Renesas RZ/G1H (R8A7742) is pin compatible with R-Car H2 (R8A7790),
however it doesn't have several automotive specific peripherals. Add
automotive-specific pin groups/functions along with common pin
groups/functions for supporting both r8a7790 and r8a7742 SoC.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Link: https://lore.kernel.org/r/1588542414-14826-3-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-05-15 10:47:06 +02:00
Geert Uytterhoeven f2bc075627 pinctrl: sh-pfc: Split R-Car H3 support in two independent drivers
Despite using the same compatible values ("r8a7795"-based) because of
historical reasons, R-Car H3 ES1.x (R8A77950) and R-Car H3 ES2.0+
(R8A77951) are really different SoCs, with different part numbers, and
with different Pin Function Controller blocks.

Reflect this in the pinctrl configuration, by replacing the existing
CONFIG_PINCTRL_PFC_R8A7795 symbol by two new config symbols:
CONFIG_PINCTRL_PFC_R8A77950 and CONFIG_PINCTRL_PFC_R8A77951.  The latter
are selected automatically, depending on the soon-to-be-introduced
corresponding SoC-specific config options, and on the current common
config option, to relax dependencies.

Rename the individual pin control driver source files from
pfc-r8a7795-es1.c to pfc-r8a77950.c, and from pfc-r8a7795.c to
pfc-r8a77951.c, and make them truly independent.
As both SoCs share the same compatible value, special care must be taken
to match them to the correct pin control driver, if support for it is
included in the running kernel.

This will allow making support for early R-Car H3 revisions optional,
the largest share of which is taken by the pin control driver.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20191230083156.19191-1-geert+renesas@glider.be
2020-01-08 09:56:28 +01:00
Geert Uytterhoeven 708c69e9ea pinctrl: sh-pfc: r8a7796: Add R8A77961 PFC support
Add support for the Pin Function Controller in the R-Car M3-W+
(R8A77961) SoC.

R-Car M3-W+ is pin compatible with R-Car M3-W (R8A77960), which allows
for both SoCs to share a driver.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20191023122955.12420-4-geert+renesas@glider.be
2019-11-01 13:42:52 +01:00
Geert Uytterhoeven d15ca3a321 pinctrl: sh-pfc: Rename PINCTRL_PFC_R8A7796 to PINCTRL_PFC_R8A77960
Rename CONFIG_PINCTRL_PFC_R8A7796 for R-Car M3-W (R8A77960) to
CONFIG_PINCTRL_PFC_R8A77960, to avoid confusion with R-Car M3-W+
(R8A77961), which will use CONFIG_PINCTRL_PFC_R8A77961.

Extend the dependency of CONFIG_PINCTRL_PFC_R8A77960 from
CONFIG_ARCH_R8A7796 to CONFIG_ARCH_R8A77960, to relax dependencies for a
future rename of the SoC configuration symbol.

Rename r8a7796_pinmux_info to r8a77960_pinmux_info, as it contains an
r8a77960-based name.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20191023122955.12420-3-geert+renesas@glider.be
2019-11-01 13:42:52 +01:00
Keiya Nobuta d30710b8cc pinctrl: sh-pfc: Fix PINMUX_IPSR_PHYS() to set GPSR
This patch allows PINMUX_IPSR_PHYS() to set bits in GPSR.
When assigning function to pin, GPSR should be set to peripheral
function.
For example when using SCL3, GPSR2 bit7 (PWM1_A pin) should be set to
peripheral function.

Signed-off-by: Keiya Nobuta <nobuta.keiya@fujitsu.com>
Link: https://lore.kernel.org/r/20191008060112.29819-1-nobuta.keiya@fujitsu.com
Fixes: 50d1ba1764 ("pinctrl: sh-pfc: Add physical pin multiplexing helper macros")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-10-14 12:11:12 +02:00
Biju Das 271ff378a3 pinctrl: sh-pfc: r8a77965: Add R8A774B1 PFC support
Renesas RZ/G2N (r8a774b1) is pin compatible with R-Car M3-N (r8a77965),
however it doesn't have several automotive specific peripherals. Add
a r8a77965 specific pin groups/functions along with common pin
groups/functions for supporting both r8a77965 and r8a774b1 SoC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Link: https://lore.kernel.org/r/1568881036-4404-9-git-send-email-biju.das@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-10-01 09:52:52 +02:00
Geert Uytterhoeven 992968d786 pinctrl: sh-pfc: Remove obsolete SH_PFC_PIN_NAMED*() macros
Now all Renesas pin control drivers have been converted to use the new
non-GPIO helper macros, SH_PFC_PIN_NAMED() and SH_PFC_PIN_NAMED_CFG()
are no longer used.  Remove them.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
2019-06-04 11:19:25 +02:00
Geert Uytterhoeven 4818f44898 pinctrl: sh-pfc: Add new non-GPIO helper macros
Add new macros for describing pins without GPIO functionality:
  - NOGP_ALL() expands to a list of PIN_id values, to be used for
    generating symbolic enum values,
  - PINMUX_NOGP_ALL() expands to a list of sh_pfc_pin entries, to
    list all pins and their capabilities.
Both macros depend on an SoC-specific CPU_ALL_NOGP() macro, to be
provided by each individual SoC pin control driver.

The new macros offer two advantages over the existing SH_PFC_PIN_NAMED()
and SH_PFC_PIN_NAMED_CFG() macros:
  1. They do not rely on PIN_NUMBER() macros and physical pin numbering,
     hence do not suffer from pin numbering confusion among different
     SoC/SiP packages.
  2. They are similar in spirit to the existing scheme for handling pins
     with GPIO functionality.

Note that internal to the driver, non-GPIO pins use a sequential
numbering scheme which starts after the highest GPIO pin number in use.
This value is calculated automatically, using two new helper macros, for
systems with either 32-port bank (GP port style) or linear (PORT style)
pin space.  Sample expansion:

    GP_LAST = sizeof(union {
	char dummy[0] __attribute__((deprecated, deprecated));
	char GP_0_0[(0 * 32) + 0] __attribute__((deprecated, deprecated));
	char GP_0_1[(0 * 32) + 1] __attribute__((deprecated, deprecated));
	...
	char GP_7_3[(7 * 32) + 3] __attribute__((deprecated, deprecated));
    })

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
2019-06-04 11:19:00 +02:00
Geert Uytterhoeven fbc5108d93 pinctrl: sh-pfc: Add PORT_GP_27 helper macro
This follows the style of the existing PORT_GP_X macros, and will be
used by a follow-up patch for the r8a7778 SoC.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-05-21 11:07:29 +02:00
Geert Uytterhoeven 4d1816cd67 pinctrl: sh-pfc: Move PIN_NONE to shared header file
Several drivers have identical definitions for PIN_NONE.
Provide a definition with a SH_PFC_ prefix for general use in sh_pfc.h,
and convert all drivers over to use it.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-05-21 11:07:29 +02:00
Geert Uytterhoeven f1074e7281 pinctrl: sh-pfc: Add SH_PFC_PIN_CFG_PULL_UP_DOWN shorthand
It is very common for a pin to support both pull-up and pull-down
functionality.  Hence add a shorthand SH_PFC_PIN_CFG_PULL_UP_DOWN.
This not only reduces typing, but also avoids the need for several line
breaks, and makes many overly long lines shorter, improving
readability.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-05-21 11:07:29 +02:00
Geert Uytterhoeven bd79c92039 pinctrl: sh-pfc: Rename 2-parameter CPU_ALL_PORT() variant
There are two variants of the CPU_ALL_PORT() macro in use:
  1. A three-parameter variant, to be provided for SoCs with a linear
     GPIO pin space ("PORT style"),
  2. A two-parameter variant, to be provided for SoCs with 32-port GPIO
     banks ("GP port style").

Rename the 2-parameter variant to CPU_ALL_GP(), to avoid confusion, and
to increase naming consistency.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-05-21 11:07:29 +02:00
Geert Uytterhoeven 360328c7dc pinctrl: sh-pfc: Improve PINMUX_IPSR_PHYS() documentation
- The IPSR field is meant for documentation only,
  - The function name refers to the pin function, not to the IPSR
    field.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
2019-04-02 09:57:50 +02:00
Geert Uytterhoeven fa4d36712f pinctrl: sh-pfc: Validate enum IDs for regs with variable-width fields
Add a run-time check to the PINMUX_CFG_REG_VAR() macro, to ensure the
number of provided enum IDs is correct.  This cannot be done at build
time, as the number of values depends on the variable-width fields in
the config register.

This helps catching bugs early.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-04-02 09:58:07 +02:00
Geert Uytterhoeven c481c81784 pinctrl: sh-pfc: Validate enum IDs for regs with fixed-width fields
Add build-time checks to the PINMUX_CFG_REG() and PINMUX_DATA_REG()
macros, to ensure the number of provided enum IDs is correct.

This helps catching bugs early.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-04-02 09:58:04 +02:00
Geert Uytterhoeven 19b593a1cf pinctrl: sh-pfc: Absorb enum IDs in PINMUX_DATA_REG() macro
Currently the PINMUX_DATA_REG() macro must be followed by initialization
data, specifying all enum IDs.  Hence the macro itself does not know
anything about the enum IDs, preventing the macro from performing any
validation on it.

Make the macro accept the enum IDs as a parameter, and update all users.
Note that array data enclosed by curly braces cannot be passed to a
macro as a parameter, hence the enum IDs are wrapped using the GROUP()
macro.

No functional changes.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-04-02 09:58:01 +02:00
Geert Uytterhoeven 69f7be1c63 pinctrl: sh-pfc: Absorb enum IDs in PINMUX_CFG_REG_VAR() macro
Currently the PINMUX_CFG_REG_VAR() macro must be followed by
initialization data, specifying all enum IDs.  Hence the macro itself
does not know anything about the enum IDs, preventing the macro from
performing any validation on it.

Make the macro accept the enum IDs as a parameter, and update all users.
Note that array data enclosed by curly braces cannot be passed to a
macro as a parameter, hence both the register field widths and the enum
IDs are wrapped using the GROUP() macro.

No functional changes.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-04-02 09:57:58 +02:00
Geert Uytterhoeven efca8da0c5 pinctrl: sh-pfc: Absorb enum IDs in PINMUX_CFG_REG() macro
Currently the PINMUX_CFG_REG() macro must be followed by initialization
data, specifying all enum IDs.  Hence the macro itself does not know
anything about the enum IDs, preventing the macro from performing any
validation on it.

Make the macro accept the enum IDs as a parameter, and update all users.
Note that array data enclosed by curly braces cannot be passed to a
macro as a parameter, hence the enum IDs are wrapped using a new macro
GROUPS().

No functional changes.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-04-02 09:57:55 +02:00
Geert Uytterhoeven 0ace959614 pinctrl: sh-pfc: Introduce PINCTRL_SH_FUNC_GPIO helper symbol
Pinctrl drivers for SuperH platforms use legacy function GPIOs.
Currently this support is compiled in based on the SUPERH platform
dependency, which hinders the introduction of compile-testing support
for the affected pinctrl drivers.

Introduce a new Kconfig symbol PINCTRL_SH_FUNC_GPIO, which is
auto-selected when needed.  This symbol in turn selects
PINCTRL_SH_PFC_GPIO, to reduce the number of per-driver selects.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-04-02 09:57:50 +02:00
Geert Uytterhoeven 5e8588c86d pinctrl: sh-pfc: Validate fixed-size field widths at build time
Add a build-time check, to ensure the register and field widths in
descriptors for config registers with fixed-width fields are sane.
This helps catching bugs early.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-02-11 14:11:35 +01:00
Geert Uytterhoeven f83f97684a pinctrl: sh-pfc: Make pinmux_cfg_reg.var_field_width[] variable-length
pinmux_cfg_reg.var_field_width[] is actually a variable-length array,
terminated by a zero, and counting at most r_width entries.
Usually the number of entries is much smaller than r_width, so the
ability to catch bugs at compile time through an "excess elements in
array initializer" warning is fairly limited.

Hence make the array variable-length, decreasing kernel size slightly.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2018-12-18 11:25:56 +01:00
Geert Uytterhoeven 9925e87957 pinctrl: sh-pfc: Validate pins/marks in pin groups at build time
Add a build-time check, to ensure the number of pins and pin marks in a
pin group matches.  This helps catching bugs early.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2018-12-18 11:25:56 +01:00
Ulrich Hecht 50d1ba1764 pinctrl: sh-pfc: Add physical pin multiplexing helper macros
Used by I2C controllers 0, 3 and 5 in R8A7795 and R8A7796 SoCs.

Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-11-19 11:56:35 +01:00
Jacopo Mondi e889b29815 pinctrl: sh-pfc: Add optional arg to VIN_DATA_PIN_GROUP
VIN data groups may appear on different sets of pins, usually named
"vinX_data_[a|b]". The existing VIN_DATA_PIN_GROUP() does not support
appending the '_a' or '_b' suffix, leading to the definition of group
names not consistent with the ones defined using the SH_PFC_PIN_GROUP()
macro.

Fix this by making the VIN_DATA_PIN_GROUP macro a variadic one,
which accepts an optional 'version' argument.

Fixes: 423caa5253 ("pinctrl: sh-pfc: r8a779[01]: Move 'union vin_data' to shared header file")
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-11-13 10:52:09 +01:00
Geert Uytterhoeven 50f3f2d73e pinctrl: sh-pfc: Reduce kernel size for narrow VIN channels
Some VIN channels support less than 24 lanes.  As union vin_data always
consumes space for 24 lanes, this wastes memory.

Hence introduce new smaller unions vin_data12 and vin_data16, to
accommodate VIN channels with only 12 or 16 lanes.

This reduces the static pin controller driver size by 320 bytes for
R-Car V2H, and by 96 bytes for R-Car E2.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
2018-11-06 09:20:26 +01:00
Fabrizio Castro 9f2b76a2db pinctrl: sh-pfc: r8a77990: Add R8A774C0 PFC support
Renesas RZ/G2E (a.k.a. r8a774c0) is pin compatible with R-Car
E3 (a.k.a. r8a77990), however it doesn't have several automotive
specific peripherals. Add a r8a77990 specific pin groups/functions
along with common pin groups/functions for supporting both r8a77990
and r8a774c0 SoCs.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-09-19 17:29:00 +02:00
Biju Das d7097b97e9 pinctrl: sh-pfc: r8a7791: Add r8a7744 support
Renesas RZ/G1N (R8A7744) is pin compatible with R-Car M2-W/N (R8A7791/3)
and RZ/G1M.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-09-19 17:27:18 +02:00
Kuninori Morimoto 63b6d7e762 pinctrl: sh-pfc: Convert to SPDX identifiers
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-09-11 12:25:32 +02:00
Biju Das 91d627a779 pinctrl: sh-pfc: r8a7796: Add R8A774A1 PFC support
Renesas RZ/G2M (r8a774a1) is pin compatible with R-Car M3-W (r8a7796),
however it doesn't have several automotive specific peripherals. Add
an r8a7796 specific pin groups/functions along with common pin
groups/functions for supporting both r8a7796 and r8a774a1 SoCs.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-08-28 11:28:37 +02:00
Takeshi Kihara 6d4036a1e3 pinctrl: sh-pfc: Initial R8A77990 PFC support
This patch adds initial pinctrl driver to support for the R8A77990 SoC.

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-05-23 14:43:32 +02:00
Takeshi Kihara ec96db5868 pinctrl: sh-pfc: Add PORT_GP_11 helper macro
This follows the style of existion PORT_GP_X macros and
will be used by a follow-up patch for the r8a77990 SoC.

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-05-23 14:43:32 +02:00
Biju Das 73dacc3403 pinctrl: sh-pfc: Add r8a77470 PFC support
Add PFC support for the R8A77470 SoC including pin groups for
some on-chip devices such as SCIF and MMC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-05-16 13:32:15 +02:00
Geert Uytterhoeven 43a51cd5d6 pinctrl: sh-pfc: Add SH_PFC_PIN_GROUP_ALIAS()
Add a macro to refer to another pin group with a different name.

This will be used to rename wrongly-named pin groups, while retaining
backwards compatibility with old DTBs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
2018-03-21 18:18:05 +01:00
Sergei Shtylyov f59125248a pinctrl: sh-pfc: Add R8A77980 PFC support
Add the PFC support for the R8A77980 SoC including pin groups for some
on-chip devices such as AVB, CAN-FD, GETHER, [H]SCIF, I2C, INTC-EX, MMC,
MSIOF, PWM, and VIN...

Based on the original (and large) patch by Vladimir Barinov.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-03-09 13:55:30 +01:00
Sergei Shtylyov c21a3e30e8 pinctrl: sh-pfc: Add PORT_GP_CFG_25() helper macro
They follow the style of the existing PORT_GP_CFG_<n>() macros and
will be used by a follow-up patch for the R8A77980 SoC.

Based on the original (and large) patch by Vladimir Barinov.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-03-09 13:55:26 +01:00
Jacopo Mondi 490e687eb8 pinctrl: sh-pfc: Initial R-Car M3-N support
Add initial PFC support for R-Car M3-N (r8a77965) SoC.
No groups or functions defined, just pin and registers enumeration.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-02-20 19:32:58 +01:00
Sergei Shtylyov b92ac66a18 pinctrl: sh-pfc: Add R8A77970 PFC support
Add the PFC support for the R8A77970 SoC including pin groups for some
on-chip devices such as CAN-FD, [H]SCIF, I2C, INTC-EX, MMC, MSIOF, PWM,
VIN...

Based on the original (and large) patch by Daisuke Matsushita
<daisuke.matsushita.ns@hitachi.com>.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Rob Herring <robh@kernel.org>
[geert: Drop EtherAVB for now]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-12-05 14:14:39 +01:00
Sergei Shtylyov 5a0e698876 pinctrl: sh-pfc: Add PORT_GP_CFG_{6|22}() helper macros
They follow the style of the existing PORT_GP_CFG_<n>() macros and
will be used by a follow-up  patch for the R8A77970 SoC.

Based on the original (and large) patch by Daisuke Matsushita
<daisuke.matsushita.ns@hitachi.com>.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-11-28 10:43:12 +01:00
Geert Uytterhoeven 8843797df3 pinctrl: sh-pfc: Save/restore registers for PSCI system suspend
During PSCI system suspend, R-Car Gen3 SoCs are powered down, and their
pinctrl register state is lost.  Note that as the boot loader skips most
initialization after system resume, pinctrl register state differs from
the state encountered during normal system boot, too.

To fix this, save all GPIO and peripheral function select, module
select, drive strength control, bias, and other I/O control registers
during system suspend, and restore them during system resume.

Note that to avoid overhead on platforms not needing it, the
suspend/resume code has a build time dependency on sleep and PSCI
support, and a runtime dependency on PSCI.

Inspired by a patch in the BSP by Hien Dang.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-10-20 11:37:43 +02:00
Geert Uytterhoeven 9e9bd06a35 pinctrl: sh-pfc: Add generic IOCTRL register description
Add a generic way to describe IOCTRL registers (for e.g. SD I/O voltage
and time delay control), like is already done for config, drive, and
bias registers.

This makes the sh-pfc core code aware of these registers, which will
ease introducing suspend/resume support later.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-10-20 11:37:21 +02:00
Geert Uytterhoeven 1860bb134f pinctrl: sh-pfc: Remove obsolete sh_pfc_pin_to_bias_info()
All users of sh_pfc_pin_to_bias_info() and the related data structures
have been converted to sh_pfc_pin_to_bias_reg(), so those can be
removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-10-20 11:37:19 +02:00
Geert Uytterhoeven beaa34d908 pinctrl: sh-pfc: Add generic bias register description
Add a generic way to describe bias registers (for pull-up/down control),
like is already done for config and drive registers.

This makes the sh-pfc core code aware of these registers, which will
ease introducing suspend/resume support later.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-10-20 11:37:00 +02:00
Takeshi Kihara 794a671176 pinctrl: sh-pfc: Initial R8A77995 PFC support
This patch adds initial pinctrl driver to support for the R8A77995 SoC.

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
[geert: whitespace]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-08-16 14:26:30 +02:00
Yoshihiro Shimoda afdf04c151 pinctrl: sh-pfc: Add PORT_GP_{10,2[01]} helper macros
This follows the style of existion PORT_GP_X macros and
will be used by a follow-up patch for the r8a77995 SoC.

Extracted from the initial r8a77995 patch in the BSP by Takeshi Kihara.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-08-16 14:26:30 +02:00
Sergei Shtylyov c8bac70f07 pinctrl: sh-pfc: r8a7794: Add R8A7745 support
Renesas RZ/G1E (R8A7745) is pin compatible with R-Car E2 (R8A7794),
however it doesn't have several automotive specific peripherals.
Annotate all the items that only exist on the R-Car SoCs...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Rob Herring <robh@kernel.org>
[geert: Drop annotations, as they are implied by pin groups/functions]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-05-16 13:53:15 +02:00
Sergei Shtylyov 8df6270149 pinctrl: sh-pfc: r8a7791: Add R8A7743 support
Renesas RZ/G1M (R8A7743) is pin compatible with R-Car M2-W/N (R8A7791/3),
however it doesn't have several automotive specific peripherals.  Annotate
all the items that only exist on the R-Car SoCs and only supply the pin
groups/functions existing on a given SoC...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Rob Herring <robh@kernel.org>
[geert: Drop annotations, as they are implied by pin groups/functions]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-05-16 13:45:28 +02:00
Geert Uytterhoeven b205914c8f pinctrl: sh-pfc: r8a7795: Add support for R-Car H3 ES2.0
The Pin Function Controller module in the R-Car H3 ES2.0 differs from
ES1.x in many ways.

The goal is twofold:
  1. Support both the ES1.x and ES2.0 SoC revisions in a single binary
     for now,
  2. Make it clear which code supports ES1.x, so it can easily be
     identified and removed later, when production SoCs are deemed
     ubiquitous.

Hence this patch:
  1. Extracts the support for R-Car H3 ES1.x into a separate file, as
     the differences are quite large,
  2. Adds code for detecting the SoC revision at runtime using the new
     soc_device_match() API, and selecting pinctrl tables for the actual
     SoC revision,
  3. Replaces the core register and bitfield definitions by their
     counterparts for R-Car H3 ES2.0.

The addition of pins, groups, and functions for the various on-chip
devices is left to subsequent patches.

The R-Car H3 ES2.0 register and bitfield definitions were extracted from
a patch in the BSP by Takeshi Kihara.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Takeshi Kihara <takeshi.kihara.df@renesas.com>
2017-03-30 13:43:45 +02:00
Niklas Söderlund 1ce56aea7c pinctrl: sh-pfc: Support named pins with custom configuration
Pins not associated with a GPIO port can still have other configuration
parameters. Add a new macro SH_PFC_PIN_NAMED_CFG which allows for named
pins to be declared with a set of configurations. The new macro is an
modification of SH_PFC_PIN_NAMED to allow for optional configuration to
be assigned.

The flag SH_PFC_PIN_CFG_NO_GPIO is still enforced as this should only be
used to define pins not associated with a GPIO port.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-16 10:29:12 +01:00
Niklas Söderlund c314c9f15a pinctrl: sh-pfc: Add helper to handle bias lookup table
On some SoC there are no simple mapping of pins to bias register bits
and a lookup table is needed. This logic is already implemented in some
SoC specific drivers that could benefit from a generic implementation.

Add helpers to deal with the lookup which later can be used by the SoC
specific drivers. The logic used to lookup are different from the one it
aims to replace, this is intentional. This new method reduces the memory
consumption at the cost of increased CPU usage and fix a bug where a
WARN() would incorrectly be triggered if the register offset is 0.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-15 11:01:09 +01:00
Simon Horman 9a6caa13f8 pinctrl: sh-pfc: Add PORT_GP_24 helper macro
This follows the style of existing PORT_GP_X macros and
will be used by a follow-up patch for the r8a7791 SoC.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-09-14 09:26:35 +02:00