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path: root/drivers/mfd/sec-core.c
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2019-05-14mfd: sec: Add support for the RTC on S2MPA01Stuart Menefy1-0/+1
The RTC portion of the S2MPA01 appears to have the same register layout as the S2MPS14. Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-05-14mfd: sec: Put one element structure initialisation on one lineStuart Menefy1-39/+19
Change the layout of the initialisation of structures with one element to a single line of code. This keeps the coding style consistent. Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-02-18mfd: sec-core: Cleanup formatting to a consistent styleKrzysztof Kozlowski1-5/+6
Cleanup the formatting to have consistent style across the file (only white-space issues). No expected difference in code. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-02-07mfd: sec-core: Return gracefully instead of BUG() if device cannot matchKrzysztof Kozlowski1-2/+3
Replace impossible BUG() in probe with a proper return. This can be triggered only in case of a clear bug (e.g. adding broken half-support for new S2MPSXX flavor) but BUG() is discouraged and the boot process can actually try to continue. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-10-23mfd: sec-core: Add SPDX license identifiersKrzysztof Kozlowski1-12/+4
Replace GPL v2.0+ license statements with SPDX license identifiers. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-07-27mfd: sec-core: Export OF module alias tableKrzysztof Kozlowski1-0/+1
In case of Device Tree platforms, even though the Samsung PMIC sec device is instantiated from DT, the driver is still matched through I2C module alias. That is because I2C core always reports an I2C module alias instead of DT one. This could change in the future so export DT module alias. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-05-09mfd: sec: Use devm_mfd_add_devices and devm_regmap_add_irq_chipLaxman Dewangan1-17/+3
Use devm_mfd_add_devices() for adding MFD child devices and devm_regmap_add_irq_chip() for IRQ chip registration. This reduces the error code path and .remove callback for removing MFD child devices and deleting IRQ chip data. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-01-14mfd: Use to_i2c_client() instead of open-coding itGeliang Tang1-2/+2
Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-11-24mfd: sec-core: Rename MFD and regulator names differentlyAlim Akhtar1-4/+4
Currently S2MPSXX multifunction device is named as *-pmic, and these MFDs also supports regulator as a one of its MFD cell which has the same name, because current name is confusing and we want to sort it out. We did discussed different approaches about how the MFD and it cells need to be named here [1]. Based in the discussion this patch rename MFD regulator name as *-regulator instead of current *-pmic. This patch also changes the corresponding entries in the regulator driver to keep git-bisect happy. [1]-> https://lkml.org/lkml/2015/10/28/417 Suggested-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-11-23mfd: sec: Add support for S2MPS15 PMICThomas Abraham1-0/+31
Add support for S2MPS15 PMIC which is similar to S2MPS11 PMIC. The S2MPS15 PMIC supports 27 LDO regulators, 10 buck regulators, RTC, three 32.768KHz clock outputs and battery charger. This patch adds initial support for LDO and buck regulators of S2MPS15 device. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [Alim: Added s2mps15_devs like rtc and clk and related changes] Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-10-30mfd: sec-core: Remove unused s2mpu02-rtc and s2mpu02-clk childrenKrzysztof Kozlowski1-5/+2
The commit 54e8827d5f0e ("mfd: sec-core: Add support for S2MPU02 device") added new MFD child devices for S2MPU02: RTC and clock provider (the clock provider with new compatible). However support for these devices was not added to existing drivers (rtc-s5m, clk-s2mps11). New drivers were not submitted neither. This means that the name of children devices is completely unused. The "samsung,s2mpu02-clk" compatible remains undocumented so it is unclear what is provided by that compatible. Clean up this by removing unused child devices and undocumented compatible. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-10-30mfd: sec-core: Disable buck voltage reset on watchdog falling edgeKrzysztof Kozlowski1-0/+26
The WRSTBI bit (disabled by default but enabled by bootloader), when set, is responsible for resetting voltages to default values of certain bucks on falling edge of Warm Reset Input pin from AP. However on some boards (with S2MPS13) the pin is pulled down so any suspend will effectively trigger the reset of bucks supplying the power to the little and big cores. In the same time when resuming, these bucks must provide voltage greater or equal to voltage before suspend to match the frequency chosen by cpufreq. If voltage (default value of voltage after reset) is lower than one set by cpufreq before suspend, then system will hang during resuming. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-10-30mfd: sec-core: Dump PMIC revision to find out the HWKrzysztof Kozlowski1-0/+10
There are different revisions of the same chipset. For example S2MPS13 has more than 2 revisions. They differ slightly in regulator constraints. Print the revision number to easily find which PMIC is used on the board. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-10-26mfd: s2mps11: Add manual shutdown method for Odroid XU3Krzysztof Kozlowski1-0/+30
On Odroid XU3 board (with S2MPS11 PMIC) the PWRHOLD bit in CTRL1 register must be manually set to 0 before initiating power off sequence. One of usual power down methods for Exynos based devices looks like: 1. PWRHOLD pin of PMIC is connected to PSHOLD of Exynos SoC. 2. Exynos holds up this pin during system operation. 3. ACOKB pin of PMIC is pulled up to VBATT and optionally to pin in other device. 4. When PWRHOLD/PSHOLD goes low, the PMIC will turn off the power if ACOKB goes high. On Odroid XU3 family the difference is in (3) - the ACOKB is grounded. This means that PMIC must manually set PWRHOLD field to low and then wait for signal from Application Processor (the usual change in PWRHOLD/PSHOLD pin will actually cut off the power). The patch adds respective binding allowing Odroid XU3 device to be powered off. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Reported-by: Anand Moon <linux.amoon@gmail.com> Tested-by: Anand Moon <linux.amoon@gmail.com> Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-11mfd: Drop owner assignment from i2c_driversKrzysztof Kozlowski1-1/+0
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-26mfd: sec-core: Enable RTC on S2MPS11 PMICKrzysztof Kozlowski1-0/+2
The S2MPS11 PMIC (present on Arndale Octa board) has the same RTC module as S2MPS14 device. Add respective mfd cell to enable it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-03mfd: sec: Remove unnecessary out of memory messageKrzysztof Kozlowski1-3/+1
There is no need to print additional ENOMEM message for sec_platform_data allocation failure. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-03mfd: sec: Cleanup unused RTC fields: ono, WTSR and SMPLKrzysztof Kozlowski1-1/+0
The WTSR (Watchdog Timer Software Reset) and SMPL (Sudden Momentary Power Loss) were removed from rtc-s5m driver because they were not used. Remove them (and on/off interrupt) from main MFD driver and header. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-25Revert "mfd: sec-core: Prepare regulators for suspend state to reduce ↵Javier Martinez Canillas1-10/+0
power-consumption" This reverts commit b7cde7078d2344073c310aa65fc2b0a845d2cb5b ("mfd: sec-core: Prepare regulators for suspend state to reduce power-consumption") Commit b7cde7078d23 called regulator_suspend_prepare() to prepare the regulators for a suspend state. But it did from the device pm suspend handler while the regulator suspend prepare function iterates over all regulators and not only the one managed by this device so it doesn't seems to be correct to call it from within a device driver. It is better to call the regulator suspend prepare/finish functions from platform code instead so this patch reverts the mentioned commit. Suggested-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-25regulator: s2mps11: Add support S2MPS13 regulator deviceChanwoo Choi1-0/+13
This patch adds S2MPS13 regulator device to existing S2MPS11 device driver. The S2MPS13 has just different number of regulators from S2MPS14. The S2MPS13 regulator device includes LDO[1-40] and BUCK[1-10]. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Sangbeom Kim <sbkim73@samsung.com> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-25mfd: sec-core: Add support for S2MPS13 deviceChanwoo Choi1-0/+16
This patch adds the support for Samsung S2MPS13 PMIC device to the sec-core MFD driver. The S2MPS13 is very similar with existing S2MPS14 and includes PMIC/ RTC/CLOCK devices. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-22mfd: sec-core: Fix 'missing blank line after declarations' warningLee Jones1-0/+1
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>
2014-07-09mfd: sec-core: Prepare regulators for suspend state to reduce power-consumptionChanwoo Choi1-0/+10
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>
2014-07-09regulator: s2mps11: Add support S2MPU02 regulator deviceChanwoo Choi1-0/+25
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>
2014-07-09mfd: sec-core: Add support for S2MPU02 deviceChanwoo Choi1-14/+32
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>
2014-06-03mfd: sec-core: Make of_device_id array constKrzysztof Kozlowski1-1/+1
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>
2014-06-03mfd: sec-core: Fix IRQ handling after resume if this is not a wakeup sourceKrzysztof Kozlowski1-15/+13
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>
2014-06-03mfd: sec-core: Remove duplicated device type from sec_pmic_devKrzysztof Kozlowski1-2/+3
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>
2014-06-03mfd/rtc: s5m: Do not allocate RTC I2C dummy and regmap for unsupported chipsetsKrzysztof Kozlowski1-52/+1
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>
2014-03-20mfd: sec-core: Fix uninitialized 'regmap_rtc' on S2MPA01Krzysztof Kozlowski1-0/+7
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>
2014-03-19mfd: sec-core: Fix I2C dummy device resource leak on probe failureKrzysztof Kozlowski1-3/+4
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>
2014-03-19mfd: sec-core: Add of_compatible strings for clock MFD cellsKrzysztof Kozlowski1-0/+3
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>
2014-03-18mfd: Add support for S2MPA01 deviceSachin Kamat1-5/+44
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>
2014-03-18mfd: sec-core: Silence compiler warningPankaj Dubey1-3/+3
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>
2014-03-18mfd: sec-core: Fix possible NULL pointer dereference when i2c_new_dummy errorKrzysztof Kozlowski1-0/+4
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>
2014-03-18mfd: sec: Add support for S2MPS14Krzysztof Kozlowski1-5/+43
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>
2014-03-18mfd: sec-core: Select different RTC regmaps for devicesKrzysztof Kozlowski1-3/+12
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>
2014-03-18mfd: sec-core: Add maximum RTC register for regmap configKrzysztof Kozlowski1-0/+2
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>
2014-02-19mfd: sec-core: sec_pmic_{suspend,resume}() should depend on CONFIG_PM_SLEEPGeert Uytterhoeven1-0/+2
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>
2014-01-25Merge tag 'regulator-v3.14-2' of ↵Linus Torvalds1-30/+0
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 ...
2014-01-21mfd: sec-core: Add cells for S5M8767-clocksTushar Behera1-1/+3
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>
2014-01-21mfd: sec-core: Fix sparse NULL pointer warningWei Yongjun1-1/+1
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>
2014-01-21mfd: sec: Constify regmap configs and regmap irqsKrzysztof Kozlowski1-4/+4
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>
2014-01-21mfd: sec: Add PM ops and make it a wake up sourceKrzysztof Kozlowski1-0/+40
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>
2014-01-06mfd: Constify struct mfd_cell where possibleGeert Uytterhoeven1-4/+4
As of commit 03e361b25ee8dfb1fd9b890072c23c4aae01c6c7 ("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>
2013-12-18mfd: sec: Remove sec_reg* regmap helpersKrzysztof Kozlowski1-30/+0
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>
2013-12-12mfd/rtc: s5m: fix register updating by adding regmap for RTCKrzysztof Kozlowski1-8/+22
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>
2013-10-23mfd: sec-core: Include linux/of.h headerSachin Kamat1-0/+1
'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>
2013-08-14mfd: sec: Add clock cell for s2mps11Yadwinder Singh Brar1-1/+3
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>
2013-07-31mfd: Use dev_get_platdata()Jingoo Han1-1/+1
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>