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* regulator: ad5398: constify regulator_ops structureBhumika Goyal2017-01-311-1/+1
| | | | | | | | | | | | | | | | | Declare regulator_ops structure as const as it is only stored in the ops field of a regulator_desc structure. This field is of type const, so regulator_ops structures having this property can be made const too. File size before: drivers/regulator/ad5398.o text data bss dec hex filename 1707 672 0 2379 94b drivers/regulator/ad5398.o File size after: drivers/regulator/ad5398.o text data bss dec hex filename 1963 416 0 2379 94b drivers/regulator/ad5398.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: ad5398: Fix return value of ad5398_write_regAxel Lin2016-02-191-2/+4
| | | | | | | | | | | | | i2c_master_send() returns the number of bytes written on success. So current code returns 2 if ad5398_write_reg() success. This return value is propagated to .set_current_limit, .enable and .disable callbacks of regulator_ops. This can be a problem, for example, if the users test if the return value of regulator_set_current_limit() is 0. Fix it by making ad5398_write_reg() return 0 on success. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: ad5398: Remove unnecessary MODULE_ALIAS()Javier Martinez Canillas2015-08-301-1/+0
| | | | | | | | The driver has a I2C device id table that is used to create the modaliases and also "ad5398-regulator" is not a supported I2C id, so it's never used. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: ad5398: Convert to devm_regulator_registerAxel Lin2013-09-171-16/+3
| | | | | Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* regulator: use dev_get_platdata()Jingoo Han2013-07-301-1/+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>
* regulator: remove use of __devexitBill Pemberton2012-11-201-1/+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>
* regulator: remove use of __devinitBill Pemberton2012-11-201-1/+1
| | | | | | | | 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>
* regulator: remove use of __devexit_pBill Pemberton2012-11-201-1/+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>
* regulator: ad5398: Fix min/max current limit boundary checkingAxel Lin2012-07-041-3/+6
| | | | | | | | | | | | | | | It is ok to request current limit with min_uA < chip->min_uA and max_uA > chip->max_uA. We need to set min_uA = chip->min_uA if (min_uA < chip->min_uA), this ensures the equation to calcuate selator does not return negative number. Also set max_uA = chip->max_uA if (max_uA > chip->max_uA), as suggested by Sonic. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* regulator: core: Use a struct to pass in regulator runtime configurationMark Brown2012-04-091-2/+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>
* Merge branch 'regulator-register' into regulator-driversMark Brown2012-04-091-1/+1
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| * regulator: ad5398: Constify regulator_descAxel Lin2012-04-051-1/+1
| | | | | | | | | | | | Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regulator: ad5398: Use devm_kzallocAxel Lin2012-04-011-4/+1
| | | | | | | | | | | | Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regulator: ad5398: show changing current in uAAxel Lin2012-04-011-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | Integer division may truncate the result. Current code shows changing current is 0mA when selector is 1 ... 8. For example: selector = 1 ad5398_calc_current returns 117, debug message shows 117/1000 = 0mA selector = 2 ad5398_calc_current returns 234, debug message shows 234/1000 = 0mA selector = 3 ad5398_calc_current returns 351, debug message shows 351/1000 = 0mA ............ selector = 8 ad5398_calc_current returns 937, debug message shows 937/1000 = 0mA Show the changing current in uA makes it easier for debugging. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* regulator: ad5398: Use DIV_ROUND_UP macro to calculate selectorAxel Lin2012-03-111-2/+2
| | | | | | Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* regulator: pass additional of_node to regulator_register()Rajendra Nayak2011-11-231-1/+1
| | | | | | | | | | | With device tree support for regulators, its needed that the regulator_dev->dev device has the right of_node attached. To be able to do this add an additional parameter to the regulator_register() api, wherein the dt-adapted driver can then pass this additional info onto the regulator core. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* i2c: Remove obsolete cleanup for clientdataWolfram Sang2010-09-301-1/+0
| | | | | | | | | A few new i2c-drivers came into the kernel which clear the clientdata-pointer on exit. This is obsolete meanwhile, so fix it and hope the word will spread. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* regulator: ad5398 - fix a memory leakAxel Lin2010-09-011-6/+6
| | | | | | | | | | In current implementation, the address return from regulator_register() is different from the address for regulator_unregister(). Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: make sure the regulator is available prior to the consumers.Sonic Zhang2010-08-111-1/+1
| | | | | | | | | Some systems are likely to want this to be subsys_initcall() to make sure the regulator is available prior to the consumers. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: new drivers for AD5398 and AD5821Sonic Zhang2010-08-111-0/+288
The AD5398 and AD5821 are single 10-bit DAC with 120 mA output current sink capability. They feature an internal reference and operates from a single 2.7 V to 5.5 V supply. This driver supports both the AD5398 and the AD5821. It adapts into the voltage and current framework. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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