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path: root/drivers/regulator/lp872x.c
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2016-02-05regulator: lp872x: Add enable GPIO pin supportPaul Kocialkowski1-0/+34
LP872x regulators are made active via the EN pin, which might be hooked to a GPIO. This adds support for driving the GPIO high when the driver is in use. Signed-off-by: Paul Kocialkowski <contact@paulk.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-05regulator: lp872x: Remove warning about invalid DVS GPIOPaul Kocialkowski1-3/+1
Some devices don't hook the DVS pin to a GPIO but to ground or VCC. In those cases, it is not a problem to have no DVS GPIO provided, as the current code will already switch to software-only DVS selection: When the DVS GPIO is invalid, lp872x_init_dvs jumps to the set_default_dvs_mode label, which instructs the chip not to use the DVS pin at all and do it all in software instead (by clearing the LP8720_EXT_DVS_M bit in the LP872X_GENERAL_CFG register). That is reflected later in the code, when setting the bucks (the DVS pin only applies to the bucks) by checking for the LP8720_EXT_DVS_M bit on the LP872X_GENERAL_CFG register (in lp872x_select_buck_vout_addr) to decide whether to use software or hardware DVS selection. Thus, there is no need to print a warning when the DVS GPIO is invalid. Signed-off-by: Paul Kocialkowski <contact@paulk.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-23regulator: lp872x: Get rid of duplicate reference to DVS GPIOPaul Kocialkowski1-2/+0
The lp872x structure holds a reference to the DVS GPIO, but it is never actually used anywhere, since a first reference exists from the lp872x_dvs structure. Signed-off-by: Paul Kocialkowski <contact@paulk.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-23regulator: lp872x: Add missing of_match in regulators descriptionsPaul Kocialkowski1-0/+15
In order to select the regulators via of_find_regulator_by_node (and thus use them in devicetree), defining of_match for each regulator is required. Signed-off-by: Paul Kocialkowski <contact@paulk.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-30Merge remote-tracking branches 'regulator/topic/mt6311', ↵Mark Brown1-1/+0
'regulator/topic/ocp', 'regulator/topic/owner', 'regulator/topic/pfuze100' and 'regulator/topic/pwm' into regulator-next
2015-08-25regulator: lp872x: handle error caseMilo Kim1-4/+7
If memory allocation gets failed on parsing the DT, then it returns error '-ENOMEM' explicitly. Then, the driver exists from the _probe(). Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-25regulator: lp872x: use the private data instead of updating I2C device ↵Milo Kim1-2/+5
platform data Currently, lp872x driver parses the DT and copies values into the 'cl->dev.platform_data' if 'of_node' exists. This may have architectural issue. Platform data is configurable through the DT or I2C board info inside the platform area. However, lp872x driver changes this configuration when it is loaded. The lp872x driver should get data from the platform side and use the private data, 'lp872x->pdata' instead of changing the original platform data. Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-14regulator: drivers: Drop owner assignment from i2c_driverKrzysztof 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: Mark Brown <broonie@kernel.org>
2015-01-26regulator: lp872x: Remove **regulators from struct lp872xAxel Lin1-19/+5
Current code is using devm_regulator_register(), so we don't need to store *rdev in struct lp872x for clean up. Also clean up lp872x_probe() a bit to remove unnecessary goto and num_regulators variable. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-07-28regulator: lp872x: Don't set constraints within the regulator driverMark Brown1-9/+0
Regulator drivers should not be specifying constraints since the valid configurations depend on how the device is used in a given system, there is no way to know if a configuration is safe for a given board. Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-20regulator: lp872x: Do not hardcode return valuesSachin Kamat1-2/+2
Propagate the error values returned by the function instead. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-30regulator: lp872x: use devm_regulator_register()Jingoo Han1-30/+3
Use devm_regulator_register() to make cleanup paths simpler, and remove unnecessary remove(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-01Merge remote-tracking branch 'regulator/topic/max8660' into regulator-nextMark Brown1-1/+1
2013-07-30regulator: 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: Mark Brown <broonie@linaro.org>
2013-07-15regulator: lp872x: fix a build waring and coding stylesMilo Kim1-4/+5
Fix a warning below. drivers/regulator/lp872x.c:910:33: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] And checkpatch warnings are fixed. WARNING: space prohibited before semicolon Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-05-20regulator: lp872x: support the device tree featureKim, Milo1-2/+114
This patch enables the DT structure of the LP8720 and LP8725 device. The LP872x platform data is generated when the device tree is configured. Even if the platform data is NULL, it is no issue at all because the driver is configured with the default mode. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-25regulator: lp872x: Use regulator_map_voltage_ascendAxel Lin1-0/+3
All regulators have ascendant voltage list in this driver. Use regulator_map_voltage_ascend for them. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-19Merge remote-tracking branch 'regulator/topic/lp872x' into regulator-nextMark Brown1-29/+7
2012-12-10regulator: lp872x: Kill _rdev_to_offset() functionAxel Lin1-29/+7
There is only one user calling _rdev_to_offset() function. Remove _rdev_to_offset() makes the code simpler. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-20regulator: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-20regulator: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06regulator: lp872x: remove unnecessary functionKim, Milo1-28/+0
The lp872x_check_dvs_validity() is used for checking DVS platform data. If the DVS platform data is not defined, return as error code. Now, this is unnecessary because the default DVS mode is set in this case. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06regulator: lp872x: fix NULL pointer access problemKim, Milo1-4/+4
The lp872x_set_dvs() is used for changing the DVS pin state. This function works only when the DVS platform data is defined. So don't assume that DVS data is always valid. In case the platform data is not defined, the DVS data is set to NULL for skipping the DVS pin control. DVS selection and GPIO pin number are used for the LP872x DVS pin control. For better readability, DVS selection argument is added in lp872x_set_dvs(). Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06regulator: lp872x: initialize the DVS modeKim, Milo1-2/+3
The platform specific configuration(general_config) is optional. However, the DVS settings should be configured explicitly while loading the driver. This patch enables configuring the default DVS mode even though the platform data is not defined. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06regulator: lp872x: set the default DVS modeKim, Milo1-1/+14
The lp872x driver has the DVS platform data which select the register address of the BUCK voltage. This patch enables updating the default DVS mode when the DVS platform data is not defined. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06regulator: lp872x: remove regulator platform data dependencyKim, Milo1-9/+7
This patch enables registering the regulator driver even though the regulator_init_data is not defined in the platform side. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-28regulator: lp872x: set_current_limit should select the maximum current in ↵Axel Lin1-10/+8
specific range Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-16regulator: lp872x: Simplify implementation of lp872x_find_regulator_init_data()Axel Lin1-21/+7
Pass regulator id rahter than the index to lp872x_find_regulator_init_data(), then the code can be simpler. We can also get max_regulators by lp->num_regulators. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Milo(Woogyom) Kim <milo.kim@ti.com> Tested-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-21regulator: change message level on probing lp872x driverKim, Milo1-1/+1
Use err log rather than warning message when the platform data is NULL Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20regulator: lp872x: Return -EINVAL if pdata is NULLAxel Lin1-5/+5
Return -EINVAL if pdata is NULL, otherwise we have NULL dereference bug. This patch also moves the code checking pdata earlier in lp872x_probe. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19regulator: add new regulator driver for lp872xKim, Milo1-0/+957
This driver supports TI/National LP8720, LP8725 PMIC. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Reviewed-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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