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path: root/drivers/regulator/tps65090-regulator.c
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2014-07-31regulator: tps65090: Set voltage for fixed regulatorsJavier Martinez Canillas1-34/+42
According to the tps65090 data manual [0], the DCDC1 and DCDC2 step-down converters and the LDO's have a fixed output voltage. Add this information to the driver since these fixed regulators can be used as parent input supply for switches that don't have an output voltage defined. So the regulator core needs to fetch the FET parent output voltage if the child voltage is queried. [0]: http://www.ti.com/lit/gpn/tps65090 Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-02regulator: tps65090: Fix tps65090 crash on Tegra DalmoreDoug Anderson1-2/+5
The patch (60e91b5 regulator: tps65090: Allow setting the overcurrent wait time) introduced a crash on Tegra Dalmore. On Dalmore the device tree doesn't have an entry for all of the FETs so it leaves tps_pdata NULL in some cases. Add a check for NULL like the rest of the code does. Reported-by: Olof Johansson <olof@lixom.net> Signed-off-by: Doug Anderson <dianders@chromium.org> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-29regulator: tps65090: Make FETs more reliable by adding retriesDoug Anderson1-15/+140
An issue was discovered with tps65090 where sometimes the FETs wouldn't actually turn on when requested (they would report overcurrent). The most problematic FET was the one used for the LCD backlight on the Samsung ARM Chromebook (FET1). Problems were especially prevalent when the device was plugged in to AC power (when the backlight voltage was higher). Mitigate the problem by adding retries on the enables of the FETs, which works around the problem fairly effectively. Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Michael Spang <spang@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-18regulator: tps65090: Allow setting the overcurrent wait timeDoug Anderson1-0/+56
The tps65090 regulator allows you to specify how long you want it to wait before detecting an overcurrent condition. Allow specifying that through the device tree (or through platform data). Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Michael Spang <spang@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-20regulator: tps65090: Remove redundant error messageSachin Kamat1-9/+3
kzalloc prints its own OOM message upon failure. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-18regulator: tps65090: Add missing of_node_putSachin Kamat1-0/+1
Add of_node_put to decrement the ref count. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-24Merge remote-tracking branch 'regulator/topic/tps65090' into regulator-nextMark Brown1-1/+1
2013-10-09regulator: tps65090: get regulators node from parent node onlyLaxman Dewangan1-1/+1
As per the devicetree binding document of TPS65090, the "regulators" subnode should be under the parent node, not outside of parent node. Hence to get the regulator node, the correct call is of_get_child_by_name() rather than of_find_node_by_name() which searches the "regulators" node from the parent node to end of DTS file. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: tps65090: Use devm_regulator_registerSachin Kamat1-30/+5
devm_* simplifies the code. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-01-31regulator: tps65090: Fix using wrong dev argument for calling of_regulator_matchAxel Lin1-1/+1
The dev parameter is the device requesting the data. In this case it should be &pdev->dev rather than pdev->dev.parent. The dev parameter is used to call devm_kzalloc in of_get_regulator_init_data(), which means this fixes a memory leak because the memory is allocated every time probe() is called, thus it should be freed when this driver is unloaded. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-29regulator: tps65090: add DT supportLaxman Dewangan1-5/+101
Add DT support for TI PMIC tps65090 regulator driver. The DT of this device have node regulator and all regulator's node of this device is added under this node. The device tree binding document has the required information for adding this device on DTS file. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-10Merge remote-tracking branch 'regulator/topic/tps65090' into regulator-nextMark Brown1-0/+1
2012-11-24regulator: tps65090: Add MODULE_ALIASAxel Lin1-0/+1
This driver can be built as a module, add MODULE_ALIAS for it. Signed-off-by: Axel Lin <axel.lin@ingics.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 __devinitBill Pemberton1-4/+4
CONFIG_HOTPLUG is going away as an option so __devinit 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>
2012-10-17regulator: tps65090: add external control support for DCDCLaxman Dewangan1-20/+57
The TPS65090's DCDC output can also be enable/disable through the external digital input signal. Add support for enable/disable either through register access via I2C or through external control inputs. The external control inputs can be driven through GPIOs also and hence adding support for passing the GPIO number. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-17regulator: tps65090: Add support for LDO regulatorsLaxman Dewangan1-0/+5
TPS65090 supports the two LDOs, LDO1 and LDO2. These are always ON regulators. The output on these LDOs are available once the input voltage available for these LDOs. Add support for these LDOs regulators. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-17regulator: tps65090: rename driver name and regulator nameLaxman Dewangan1-8/+8
To make the names proper and more appropriate: Rename the driver name from tps65090-regulator to tps65090-pmic. Rename the regulators from TPS65090_ID_* to TPS65090_REGULATOR_* Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-17regulator: tps65090: Register all regulators in single probe callLaxman Dewangan1-58/+137
MFD driver registers the regulator driver once per device and hence it is require to register all regulators in single probe call. Following are details of changes done to achieve this: - Move the regulator enums to mfd header and remove the tps65090-regulator.h as it does not contain more info. - Add max regulator and register all regulators even if there is no regulator init data from platform. - Convert regulator init data to pointer type in platform data. - Add input supply name in regulator desc to provide input supply. - Separate desc information from driver information. - Disable external control bit to have control through register write. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12Merge remote-tracking branch 'regulator/topic/drivers' into regulator-nextMark Brown1-1/+0
Conflicts: drivers/regulator/88pm8607.c (simple overlap with a bugfix in v3.4)
2012-04-23regulator: Remove unneeded include of linux/delay.h from regulator driversAxel Lin1-1/+0
All the drivers that need delay for the regulator voltage output voltage to stabilize after being enabled or after being set to a new value has been converted to implement enable_time and set_voltage_time_sel callbacks. Then regulator core will take care of the necessary delay. For the drivers that don't need the delay, don't need to include linux/delay.h. This patch removes the unneeded include of linux/delay.h in regulator drivers. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-18regulator: tps65090: Use generic regmap enable/disable operationsAxel Lin1-57/+7
This patch converts tps65090 regulator driver to use generic regmap enable/disable operations. Also move struct tps65090 to include/linux/mfd/tps65090.h because the regulator driver needs to access the rmap field of struct tps65090. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-09regulator: core: Use a struct to pass in regulator runtime configurationMark Brown1-2/+6
Rather than adding new arguments to regulator_register() every time we want to add a new bit of dynamic information at runtime change the function to take these via a struct. By doing this we avoid needing to do further changes like the recent addition of device tree support which required each regulator driver to be updated to take an additional parameter. The regulator_desc which should (mostly) be static data is still passed separately as most drivers are able to configure this statically at build time. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-01regulator: Remove _en_reg, _en_bit and _ops parameters from tps65090_REG macroAxel Lin1-14/+14
Both _en_bit and _ops parameters for all DCDCs and FETs are the same, so we can hardcode it in tps65090_REG macro. _en_reg can be calculated by _id + 12, so we can also remove it. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-01regulator: tps65090: Use IS_ERR to check return value of regulator_registerAxel Lin1-1/+1
regulator_register never returns NULL. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-01regulator: Add TPS65090 regulator driverVenu Byravarasu1-0/+197
Add TPS65090 regulator driver TPS65090 PMIC from TI consists of 3 step down converters, 2 always on LDOs and 7 current limited load switches. The output voltages are ON/OFF controllable and are meant to supply power to the components on target board. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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