Commit Graph

40 Commits

Author SHA1 Message Date
Lee Jones b6c1cb4d96 mfd: sec-core: Fix 'missing blank line after declarations' warning
This is part of an effort to clean-up the MFD subsystem.

WARNING: Missing a blank line after declarations
+               const struct of_device_id *match;
+               match = of_match_node(sec_dt_match, i2c->dev.of_node);

total: 0 errors, 1 warnings, 494 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-22 13:17:07 +01:00
Chanwoo Choi b7cde7078d mfd: sec-core: Prepare regulators for suspend state to reduce power-consumption
This patch use regulator_suspend_prepare() function to prepare the proper state
of regulators for suspend state to remove un-necessary leakage power-consumption.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-09 14:58:12 +01:00
Chanwoo Choi 00e2573d2c regulator: s2mps11: Add support S2MPU02 regulator device
This patch add S2MPU02 regulator device to existing S2MPS11 device driver
because of little difference between S2MPS1x and S2MPU02. The S2MPU02
regulator device includes LDO[1-28] and BUCK[1-7].

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
[Add missing linear_min_sel of S2MPU02 LDO regulators by Jonghwa Lee]
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-09 14:58:11 +01:00
Chanwoo Choi 54e8827d5f mfd: sec-core: Add support for S2MPU02 device
Add support for Samsung S2MPU02 PMIC device to the MFD sec-core driver.
The S2MPU02 device includes PMIC/RTC/Clock devices.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-09 14:58:11 +01:00
Krzysztof Kozlowski df20b7c534 mfd: sec-core: Make of_device_id array const
Array of struct of_device_id may be be const as expected by both
of_match_table field and of_match_node() call.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:35 +01:00
Krzysztof Kozlowski 360d15d6ef mfd: sec-core: Fix IRQ handling after resume if this is not a wakeup source
During suspend the IRQ should be disabled even if this is not a wakeup
source. This is a proper way of fixing the IRQ handling issue during
resume (IRQ handler fails because I2C bus did not resume yet).

When device is suspended and sec-core interrupt is signaled the irq chip
will try to handle it regardless of wakeup source. Device could be woken
up by different IRQ but still the IRQ handler will try to read the
registers over I2C bus and fail because I2C bus won't be ready yet.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:22 +01:00
Krzysztof Kozlowski 9549b5ff00 mfd: sec-core: Remove duplicated device type from sec_pmic_dev
The device type was stored in sec_pmic_dev state container twice:
 - unsigned long type (initialized from of_device_id or i2c_device_id)
 - int device_type (initialized as above or from board files when there
   is no DTS)

The 'type' field was never used outside of probe so it can be safely
removed.

Change also the device_type in sec_pmic_dev and sec_platform_data to
unsigned long to avoid any casts.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:21 +01:00
Krzysztof Kozlowski e349c910e2 mfd/rtc: s5m: Do not allocate RTC I2C dummy and regmap for unsupported chipsets
The rtc-s5m driver does not support all of S2M and S5M chipsets
supported by main MFD sec-core driver. For such chipsets unsupported by
rtc-s5m, the MFD sec-core driver initialized regmap with default config.
This config in such cases wouldn't work at all.

The main MFD sec-core driver shouldn't initialize regmap for child
drivers which is not used by them and even not valid.

Move the allocation of RTC I2C dummy device and initialization of RTC
regmap from main MFD sec-core driver to the rtc-s5m driver. The rtc-s5m
driver will use proper regmap config for supported devices.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:16 +01:00
Krzysztof Kozlowski 5a78401623 mfd: sec-core: Fix uninitialized 'regmap_rtc' on S2MPA01
Initialize the 'regmap_rtc' on S2MPA01 to some sane value. Sane at least
for S5M87X chipsets, not S2MPS/S2MPA but it won't be used because
rtc-s5m driver does not support S2MPA01.

This fixes following error:
drivers/mfd/sec-core.c:342:45: warning: ‘regmap_rtc’ may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-20 15:57:23 +00:00
Krzysztof Kozlowski 8c66eeced1 mfd: sec-core: Fix I2C dummy device resource leak on probe failure
Dummy I2C device allocated in sec_pmic_probe() leaked if
devm_regmap_init_i2c() failed. Unregister it before returning from
probe.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-19 09:00:08 +00:00
Krzysztof Kozlowski 53c31b3437 mfd: sec-core: Add of_compatible strings for clock MFD cells
Add of_compatible strings for S5M8767 and S2MPS14 clock MFD cells.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-19 09:00:07 +00:00
Sachin Kamat ce24991e1e mfd: Add support for S2MPA01 device
Add the necessary entries required for S2MPA01 multi-function
device. While at it also convert whitespaces to tabs in core.h.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-18 10:56:17 +00:00
Pankaj Dubey 8f695de515 mfd: sec-core: Silence compiler warning
When used 64bit compiler GCC warns as
drivers/mfd/sec-core.c:199:10: warning:
cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-18 10:50:20 +00:00
Krzysztof Kozlowski 65aba1e049 mfd: sec-core: Fix possible NULL pointer dereference when i2c_new_dummy error
During probe the sec-core driver allocates dummy I2C device for RTC with
i2c_new_dummy() but return value is not checked. In case of error
(i2c_new_device(): memory allocation failure or I2C address cannot be
used) this function returns NULL which is later used by
devm_regmap_init_i2c() or i2c_unregister_device().

If i2c_new_dummy() fails for RTC device, fail also the probe for main
MFD driver.

Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-18 10:50:18 +00:00
Krzysztof Kozlowski dc6919663f mfd: sec: Add support for S2MPS14
Add support for S2MPS14 PMIC device to the MFD sec-core driver.
The S2MPS14 is similar to S2MPS11 but it has fewer regulators, two
clocks instead of three and a little different registers layout.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-18 10:50:09 +00:00
Krzysztof Kozlowski 3e5a45f7f1 mfd: sec-core: Select different RTC regmaps for devices
This patch prepares for adding support for S2MPS14 RTC driver by
selecting different regmaps for S2MPS1X/S5M876X RTC devices.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-18 10:49:38 +00:00
Krzysztof Kozlowski b07e2b70b9 mfd: sec-core: Add maximum RTC register for regmap config
Add maximum register to the regmap used by rtc-s5m driver.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-18 10:48:43 +00:00
Geert Uytterhoeven 8321bbf890 mfd: sec-core: sec_pmic_{suspend,resume}() should depend on CONFIG_PM_SLEEP
If CONFIG_PM_SLEEP=n:

drivers/mfd/sec-core.c:349: warning: ‘sec_pmic_suspend’ defined but not used
drivers/mfd/sec-core.c:371: warning: ‘sec_pmic_resume’ defined but not used

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-02-19 13:30:34 +00:00
Linus Torvalds 15333539a9 regulator: Updates for v3.14
A respin of the merges in the previous pull request with one extra fix.
 A quiet release for the regulator API, quite a large number of small
 improvements all over but other than the addition of new drivers for the
 AS3722 and MAX14577 there is nothing of substantial non-local impact.
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Merge tag 'regulator-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "A respin of the merges in the previous pull request with one extra
  fix.

  A quiet release for the regulator API, quite a large number of small
  improvements all over but other than the addition of new drivers for
  the AS3722 and MAX14577 there is nothing of substantial non-local
  impact"

* tag 'regulator-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (47 commits)
  regulator: pfuze100-regulator: Improve dev_info() message
  regulator: pfuze100-regulator: Fix some checkpatch complaints
  regulator: twl: Fix checkpatch issue
  regulator: core: Fix checkpatch issue
  regulator: anatop-regulator: Remove unneeded memset()
  regulator: s5m8767: Update LDO index in s5m8767-regulator.txt
  regulator: as3722: set enable time for SD0/1/6
  regulator: as3722: detect SD0 low-voltage mode
  regulator: tps62360: Fix up a pointer-integer size mismatch warning
  regulator: anatop-regulator: Remove unneeded kstrdup()
  regulator: act8865: Fix build error when !OF
  regulator: act8865: register all regulators regardless of how many are used
  regulator: wm831x-dcdc: Remove unneeded 'err' label
  regulator: anatop-regulator: Add MODULE_ALIAS()
  regulator: act8865: fix incorrect devm_kzalloc for act8865
  regulator: act8865: Remove set_suspend_[en|dis]able implementation
  regulator: act8865: Remove unneeded regulator_unregister() calls
  regulator: s2mps11: Clean up redundant code
  regulator: tps65910: Simplify setting enable_mask for regulators
  regulator: act8865: add device tree binding doc
  ...
2014-01-25 13:19:10 -08:00
Tushar Behera 39fed00f0b mfd: sec-core: Add cells for S5M8767-clocks
S5M8767 chip has 3 crystal oscillators running at 32KHz. These are
supported by s2mps11-clk driver.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:57 +00:00
Wei Yongjun 005718c08b mfd: sec-core: Fix sparse NULL pointer warning
Fixes the following sparse warning:

drivers/mfd/sec-core.c:202:16: warning: Using plain integer as NULL pointer

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:03 +00:00
Krzysztof Kozlowski a30fffb060 mfd: sec: Constify regmap configs and regmap irqs
Add "const" to "static struct regmap_irq" and "static struct
regmap_config".

Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:13:37 +00:00
Krzysztof Kozlowski f6d6daaf9b mfd: sec: Add PM ops and make it a wake up source
Add PM suspend/resume ops to the sec MFD core driver and make it a wake
up source. This allows proper waking from suspend to RAM and also fixes
broken interrupts after resuming:
[   42.705703] sec_pmic 7-0066: Failed to read IRQ status: -5

Interrupts stop working after first resume initiated by them (e.g. by
RTC Alarm interrupt) because interrupt registers were not cleared properly.

When device is woken up from suspend by RTC Alarm, an interrupt occurs
before resuming I2C bus controller. The interrupt is handled by
regmap_irq_thread which tries to read RTC registers. This read fails
(I2C is still suspended) and RTC Alarm interrupt is disabled.

Disable the S5M8767 interrupts during suspend (disable_irq()) and enable
them during resume so the device will be still woken up but the interrupt
won't happen before resuming I2C bus.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:13:35 +00:00
Geert Uytterhoeven 5ac98553af mfd: Constify struct mfd_cell where possible
As of commit 03e361b25e ("mfd: Stop setting
refcounting pointers in original mfd_cell arrays"), the "cell" parameter of
mfd_add_devices() is "const" again. Hence make all cell data passed to
mfd_add_devices() const where possible.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-06 09:13:29 +00:00
Krzysztof Kozlowski ee5182b59f mfd: sec: Remove sec_reg* regmap helpers
Remove sec_reg* helpers as they are not used anymore. These helpers were
error-prone as they mixed u8 with unsigned int and they changed order of
some of parameters (val and mask in sec_reg_update()).

Also the helpers didn't give any way of useful abstraction as they just
called corresponding regmap function.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-18 17:25:26 +00:00
Krzysztof Kozlowski 3e1e4a5f3a mfd/rtc: s5m: fix register updating by adding regmap for RTC
Rename old regmap field of "struct sec_pmic_dev" to "regmap_pmic" and
add new regmap for RTC.

On S5M8767A registers were not properly updated and read due to usage of
the same regmap as the PMIC.  This could be observed in various hangs,
e.g.  in infinite loop during waiting for UDR field change.

On this chip family the RTC has different I2C address than PMIC so
additional regmap is needed.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-12 18:19:26 -08:00
Sachin Kamat 1c5a099b29 mfd: sec-core: Include linux/of.h header
'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid breakage in the future.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-10-23 16:22:15 +01:00
Yadwinder Singh Brar 3134bcae4f mfd: sec: Add clock cell for s2mps11
This patch adds clock to list of mfd cells for s2mps11 and DT documentation
for clock part.

Reviewed-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-08-14 18:53:15 +01:00
Jingoo Han 334a41ce9b mfd: 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: Lee Jones <lee.jones@linaro.org>
2013-07-31 13:01:29 +01:00
Mark Brown 6b845ba934 mfd: sec: Add register cache for interrupt mask registers
The performance of regmap-irq is improved if the interrupt mask registers
can be cached since it does read/modify/update cycles so start using the
register cache infrastructure for those registers. We should use this more
widely but I don't have a datasheet and this is a nice, conservative
starting point.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-31 02:02:55 +02:00
Yadwinder Singh Brar aa32acadcf mfd: s2mps11: Add device tree support
This patch adds DT compatible string for s2mps11 and binding documentation.

Reviewed-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-31 02:02:52 +02:00
Mark Brown 25f311fa58 mfd: sec: Provide max_register to regmap
Enable debugfs register dumps and greater error checking within the
regmap API providing the maximum register to the regmap API.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-02 00:54:39 +02:00
Leon Romanovsky 15447a46a5 mfd: sec-core: Remove explicit call to mfd_remove_devices
In case mfd_add_devices will fail, it will call to mfd_remove_devices
by itself and return non-zero value.

Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-11 19:27:51 +02:00
Mark Brown 197bf85630 regulator: s5m8767: Fix build in non-DT case
Fix drift in DT parsing function name in the stub code.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04 18:31:25 +00:00
Amit Daniel Kachhap 26aec009f6 regulator: add device tree support for s5m8767
This device tree support is added for PMIC block of S5m8767 multi
function driver. The usage detail is added in the device tree
documentation section. This change is tested on exynos5250 based
arndale platform by regulator voltage set/get API's.

Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Tested-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04 10:31:31 +00:00
Mark Brown 0848c94fb4 mfd: core: Push irqdomain mapping out into devices
Currently the MFD core supports remapping MFD cell interrupts using an
irqdomain but only if the MFD is being instantiated using device tree
and only if the device tree bindings use the pattern of registering IPs
in the device tree with compatible properties.  This will be actively
harmful for drivers which support non-DT platforms and use this pattern
for their DT bindings as it will mean that the core will silently change
remapping behaviour and it is also limiting for drivers which don't do
DT with this particular pattern.  There is also a potential fragility if
there are interrupts not associated with MFD cells and all the cells are
omitted from the device tree for some reason.

Instead change the code to take an IRQ domain as an optional argument,
allowing drivers to take the decision about the parent domain for their
interrupts.  The one current user of this feature is ab8500-core, it has
the domain lookup pushed out into the driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-15 23:22:04 +02:00
Sangbeom Kim 9b6d134306 mfd: Add samsung s2mps11 mfd support
This patch add Samsung S2MPS11 mfd driver.
The S2MPS11 can support regulators and RTC.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-16 14:30:47 +02:00
Sangbeom Kim 54227bcf20 mfd: Modify samsung mfd header
As Prefix of Samsung pmic changed from s5m to s2m,
To make common mfd driver for s2m and s5m series,
This patch rename header of Samsung mfd and modify mfd driver.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-16 14:28:11 +02:00
Sangbeom Kim 63063bfbff mfd: Modify samsung mfd driver for common api
Previous naming rule of samsung pmic start with s5m prefix.
But It is changed by s2m.
To cover various samsung s2m and s5m series,
This patch modify function and variable name for common usage.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-16 14:26:45 +02:00
Sangbeom Kim 66c9fbb989 mfd: Rename s5m file and directories to samsung
Previously, Samsung PMIC naming rule start with prefix of s5m.
But Naming rule is changed.
From now on, Prefix will be changed to s2m.
So, To support pmic series of s5m and s2m, change mfd file and directory name.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-16 12:57:35 +02:00