linux-toradex.git/include/linux/mfd/samsung/core.h, branch v4.4.56

mfd: sec-core: Disable buck voltage reset on watchdog falling edge

2015-10-30T17:20:37+00:00

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 
Reported-by: Bartlomiej Zolnierkiewicz 
Tested-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Lee Jones

mfd: s2mps11: Add manual shutdown method for Odroid XU3

2015-10-26T14:49:04+00:00

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 
Reported-by: Anand Moon 
Tested-by: Anand Moon 
Reviewed-by: Javier Martinez Canillas 
Signed-off-by: Lee Jones

mfd: sec: Cleanup unused RTC fields: ono, WTSR and SMPL

2015-03-03T17:30:18+00:00

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 
Signed-off-by: Lee Jones

regulator: s2mps11: Add support S2MPS13 regulator device

2014-11-25T15:55:06+00:00

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 
Acked-by: Sangbeom Kim 
Acked-by: Mark Brown 
Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Lee Jones

mfd: sec-core: Add support for S2MPS13 device

2014-11-25T15:55:01+00:00

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 
Acked-by: Sangbeom Kim 
Signed-off-by: Lee Jones

regulator: s2mpxxx: Move regulator min/step voltages in common place

2014-08-16T21:51:16+00:00

This is a cleanup patch and moves min/step voltages in a common samsung
header file so that they can be used by other s2mpxxx PMIC drivers. Only
few required macros are added currently and others can be added if needed.

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Amit Daniel Kachhap 
Acked-by: Lee Jones 
Signed-off-by: Mark Brown

mfd: sec-core: Add support for S2MPU02 device

2014-07-09T13:58:11+00:00

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 
Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Lee Jones

mfd: sec-core: Remove duplicated device type from sec_pmic_dev

2014-06-03T07:11:21+00:00

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 
Signed-off-by: Lee Jones

mfd: sec-core: Update sec_pmic documentation

2014-06-03T07:11:17+00:00

Update the documentation for sec_pmic state container structure to
reflect current code.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Lee Jones

mfd/rtc: s5m: Do not allocate RTC I2C dummy and regmap for unsupported chipsets

2014-06-03T07:11:16+00:00

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 
Acked-by: Alessandro Zummo 
Signed-off-by: Lee Jones