spi: pl022: Add support for chip select extension

Add support for a extended PL022 which has an extra register for controlling up
to five chip select signals. This controller is found on

spi: pl022: Add support for chip select extension

Add support for a extended PL022 which has an extra register for controlling up
to five chip select signals. This controller is found on the AXM5516 SoC.
Unfortunately the PrimeCell identification registers are identical to a
standard ARM PL022. To work around this, the peripheral ID must be overridden
in the device tree using the "arm,primecell-periphid" property with the value
0x000b6022.

Signed-off-by: Anders Berg <anders.berg@avagotech.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>

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spi: pl022: Add missing error check for devm_kzalloc

Currently this driver is missing a check on the return value of devm_kzalloc,
which would cause a NULL pointer dereference in a OOM s

spi: pl022: Add missing error check for devm_kzalloc

Currently this driver is missing a check on the return value of devm_kzalloc,
which would cause a NULL pointer dereference in a OOM situation.

This patch adds a missing check.

Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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spi/pl022: Fix error message

This patch fixes an error message typo ("not" missing).

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Mark Brown <broonie@linaro.or

spi/pl022: Fix error message

This patch fixes an error message typo ("not" missing).

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi/pl022: Explicitly truncate large bitmask

When building on 64 bit architectures the use of bitwise negation generates
constants larger than 32 bits which won't fit in u32s used to rep

spi/pl022: Explicitly truncate large bitmask

When building on 64 bit architectures the use of bitwise negation generates
constants larger than 32 bits which won't fit in u32s used to represent
32 bit register values on the device. Explicitly cast to let the compiler
know that the higher bits are not significant and can be discarded.

Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: pl022: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Ha

spi: pl022: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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Merge remote-tracking branches 'spi/topic/omap-uwire', 'spi/topic/omap100k', 'spi/topic/omap2', 'spi/topic/orion', 'spi/topic/pl022', 'spi/topic/qup', 'spi/topic/rspi' and 'spi/topic/s3c24xx' into sp

Merge remote-tracking branches 'spi/topic/omap-uwire', 'spi/topic/omap100k', 'spi/topic/omap2', 'spi/topic/orion', 'spi/topic/pl022', 'spi/topic/qup', 'spi/topic/rspi' and 'spi/topic/s3c24xx' into spi-next

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spi: pl022: Don't ignore power domain and amba bus at system suspend

Previously only the resources controlled by the driver were put into
low power state at system suspend. Both the amba

spi: pl022: Don't ignore power domain and amba bus at system suspend

Previously only the resources controlled by the driver were put into
low power state at system suspend. Both the amba bus and a potential
power domain were ignored.

Moreover, while putting the device into low power state we first
brought it back to full power, but for no particular reason.

To handle both issues above, use pm_runtime_force_suspend|resume() from
the system suspend|resume callbacks.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: pl022: Let runtime PM callbacks be available for CONFIG_PM

Convert to the SET_PM_RUNTIME_PM macro while defining the runtime PM
callbacks. This means the callbacks becomes available

spi: pl022: Let runtime PM callbacks be available for CONFIG_PM

Convert to the SET_PM_RUNTIME_PM macro while defining the runtime PM
callbacks. This means the callbacks becomes available for both
CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME, which is needed to handle the
combinations of these scenarios.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: Use list_last_entry at appropriate places

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

spi: pl022: Remove redundant pinctrl to default state in probe

The driver core is now taking care of putting our pins into default
state at probe. Thus we can remove the redundant call f

spi: pl022: Remove redundant pinctrl to default state in probe

The driver core is now taking care of putting our pins into default
state at probe. Thus we can remove the redundant call for it in probe.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: pl022: Simplify clock handling

Make use of clk_prepare_enable and clk_disable_unprepare to simplify
code. No functional change.

Signed-off-by: Ulf Hansson <ulf.hansson@lina

spi: pl022: Simplify clock handling

Make use of clk_prepare_enable and clk_disable_unprepare to simplify
code. No functional change.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi/pl022: Unprepare clocks while suspended

When the driver was converted to clk_prepare() the suspend path didn't
have any changes made so the clock remains prepared throughout the runt

spi/pl022: Unprepare clocks while suspended

When the driver was converted to clk_prepare() the suspend path didn't
have any changes made so the clock remains prepared throughout the runtime
of the driver. Unprepare it when suspended so that any savings that can be
made as a result are made.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

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Merge remote-tracking branch 'spi/topic/pl022' into spi-next

spi: pl022: Use dev_info() instead of printk()

Change raw printk() call to dev_info() to provide a better message
to userspace so it can properly identify the device.

Signed-off

spi: pl022: Use dev_info() instead of printk()

Change raw printk() call to dev_info() to provide a better message
to userspace so it can properly identify the device.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: pl022: use devm_spi_register_master()

Use devm_spi_register_master() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Linus Walleij

spi: pl022: use devm_spi_register_master()

Use devm_spi_register_master() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: pl022: remove unnecessary amba_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the

spi: pl022: remove unnecessary amba_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: pl022: Remove redundant break

'break' immediately after return has no effect.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Linus Walleij <linus.walleij@l

spi: pl022: Remove redundant break

'break' immediately after return has no effect.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

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Merge remote-tracking branch 'spi/topic/qspi' into spi-next

Merge remote-tracking branch 'spi/topic/pl022' into spi-next

spi: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han <jg1.han@samsun

spi: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi: spi-pl022: Fix warning when CONFIG_ARM_LPAE=y

When CONFIG_ARM_LPAE=y the following build warning is generated:

drivers/spi/spi-pl022.c:2178:9: warning: format '%x' expects argu

spi: spi-pl022: Fix warning when CONFIG_ARM_LPAE=y

When CONFIG_ARM_LPAE=y the following build warning is generated:

drivers/spi/spi-pl022.c:2178:9: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'resource_size_t' [-Wformat]

According to Documentation/printk-formats.txt '%pa' can be used to properly
print 'resource_size_t'.

Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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spi/pl022: Convert to core runtime PM

Signed-off-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Merge tag 'pinctrl-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control changes from Linus Walleij:

- A large slew of improvements of

Merge tag 'pinctrl-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control changes from Linus Walleij:

- A large slew of improvements of the Genric pin configuration support,
and deployment in four different platforms: Rockchip, Super-H PFC,
ABx500 and TZ1090. Support BIAS_BUS_HOLD, get device tree parsing
and debugfs support into shape.

- We also have device tree support with generic naming conventions for
the generic pin configuration.

- Delete the unused and confusing direct pinconf API. Now state
transitions is *the* way to control pins and multiplexing.

- New drivers for Rockchip, TZ1090, and TZ1090 PDC.

- Two pin control states related to power management are now handled in
the device core: "sleep" and "idle", removing a lot of boilerplate
code in drivers. We do not yet know if this is the final word for
pin PM, but it already make things a lot easier to handle.

- Handle sparse GPIO ranges passing a list of disparate pins, and
utilize these in the new BayTrail (x86 Atom SoC) driver.

- Make the sunxi (AllWinner) driver handle external interrupts.

- Make it possible for pinctrl-single to handle the case where several
pins are managed by a single register, and augment it to handle sleep
modes.

- Cleanups and improvements for the abx500 drivers.

- Move Sirf pin control drivers to their own directory, support
save/restore of context and add support for the SiRFatlas6 SoC.

- PMU muxing for the Dove pinctrl driver.

- Finalization and support for VF610 in the i.MX6 pinctrl driver.

- Smoothen out various Exynos rough edges.

- Generic cleanups of various kinds.

* tag 'pinctrl-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (82 commits)
pinctrl: vt8500: wmt: remove redundant dev_err call in wmt_pinctrl_probe()
pinctrl: remove bindings for pinconf options needing more thought
pinctrl: remove slew-rate parameter from tz1090
pinctrl: set unit for debounce time pinconfig to usec
pinctrl: more clarifications for generic pull configs
pinctrl: rip out the direct pinconf API
pinctrl-tz1090-pdc: add TZ1090 PDC pinctrl driver
pinctrl-tz1090: add TZ1090 pinctrl driver
pinctrl: samsung: Staticize drvdata_list
pinctrl: rockchip: Add missing irq_gc_unlock() call before return error
pinctrl: abx500: rework error path
pinctrl: abx500: suppress hardcoded value
pinctrl: abx500: factorize code
pinctrl: abx500: fix abx500_gpio_get()
pinctrl: abx500: fix abx500_pin_config_set()
pinctrl: abx500: Add device tree support
sh-pfc: Guard DT parsing with #ifdef CONFIG_OF
pinctrl: add Intel BayTrail GPIO/pinctrl support
pinctrl: fix pinconf_ops::pin_config_dbg_parse_modify kerneldoc
pinctrl: Staticize local symbols
...

Conflicts:
drivers/net/ethernet/ti/davinci_mdio.c
drivers/pinctrl/Makefile

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spi: pl022: remove unused ret and pins_state variables

Removes the warnings:

drivers/spi/spi-pl022.c: In function 'pl022_suspend_resources':
drivers/spi/spi-pl022.c:2322:24: war

spi: pl022: remove unused ret and pins_state variables

Removes the warnings:

drivers/spi/spi-pl022.c: In function 'pl022_suspend_resources':
drivers/spi/spi-pl022.c:2322:24: warning: unused variable 'pins_state' [-Wunused-variable]
drivers/spi/spi-pl022.c:2321:6: warning: unused variable 'ret' [-Wunused-variable]
drivers/spi/spi-pl022.c: In function 'pl022_resume_resources':
drivers/spi/spi-pl022.c:2334:6: warning: unused variable 'ret' [-Wunused-variable]

introduced in:

f1c9cf0 spi: pl022: use pinctrl PM helpers

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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spi: pl022: use DMA by default when probing from DT

In the past we controlled the selection of DMA for a certain
host by a boolean switch in the platform data. Currently
there is no

spi: pl022: use DMA by default when probing from DT

In the past we controlled the selection of DMA for a certain
host by a boolean switch in the platform data. Currently
there is no way to enable DMA on a PL022 probed from the
device tree. Let's default to trying to obtain DMA channels
in the DT case, and then we can always fail (and thus fall
back to PIO mode).

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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