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path: root/drivers/regulator
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2008-10-30regulator: da903x regulator bug fixJonathan Cameron
Changes the device registration part of the probe function to supply the regulator device rather than its parent (the mfd device) as this caused problems when the regulator core attempted to find constraints associated with the regulators. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13da903x: add regulator support for DA9030/DA9034Eric Miao
Signed-off-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Liam Girdwood <lrg@kernel.org>
2008-10-13regulator: Add WM8350 regulator supportMark Brown
The WM8350 features six DCDC convertors (four buck and two boost), four LDO voltage regulators and two constant current sinks. This driver adds support for these through the regulator API. This driver was written by Liam Girdwood with updates for submission from Mark Brown. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13regulator: Export regulator name via sysfsMark Brown
Provide a new file 'name' in the regulator sysfs class with a human readable name for the regulator for use in applications. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13regulator: Add WM8400 regulator supportMark Brown
The WM8400 provides two programmable DCDC step-down (buck) convertors and four low-dropout (LDO) regulators. This driver provides support for runtime managment of these in the standard regulator API. Support for configuration of the suspend and hibernate mode behaviour of the regulators is not yet included. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13regulator: Enable regulators marked as always_onMark Brown
If the machine constraints mark a regulator as always_on but this was not done by the bootloader then enable the regulator when applying constraints. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13regulator: Additional diagnostics for machine constraintsMark Brown
Try to find a human readable name for the regulator we're failing on and print a specific diagnostic when we fail to set the suspend state. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13regulator: check for init_data on registrationMark Brown
Since it is now mandatory to supply constraints via init_data on device registration check for that when registering, saving us from oopsing later on. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-10-13regulator: core - Rework machine API to remove string based functions.Liam Girdwood
This improves the machine level API in order to configure regulator constraints and consumers as platform data and removes the old string based API that required several calls to set up each regulator. The intention is to create a struct regulator_init_data, populate it's fields with constraints, consumers devices, etc and then register the regulator device from board.c in the standard Linux way. e.g. regulator LDO2 (supplying codec and sim) platform data. /* regulator LDO2 consumer devices */ static struct regulator_consumer_supply ldo2_consumers[] = { { .dev = &platform_audio_device.dev, .supply = "codec_avdd", }, { .dev = &platform_sim_device.dev, .supply = "sim_vcc", } }; /* regulator LDO2 constraints */ static struct regulator_init_data ldo2_data = { .constraints = { .min_uV = 3300000, .max_uV = 3300000, .valid_modes_mask = REGULATOR_MODE_NORMAL, .apply_uV = 1, }, .num_consumer_supplies = ARRAY_SIZE(ldo2_consumers), .consumer_supplies = ldo2_consumers, }; /* machine regulator devices with thier consumers and constraints */ static struct platform_device wm8350_regulator_devices[] = { { .name = "wm8350-regulator", .id = WM8350_LDO_2, .dev = { .platform_data = &ldo2_data, }, }, }; Changes in detail:- o Removed all const char* regulator config functions in machine API. o Created new struct regulator_init_data to contain regulator machine configuration constraints and consmuers. o Changed set_supply(), set_machine_constraints(), set_consumer_device_supply() to remove their string identifier parameters. Also made them static and moved functions nearer top of core.c. o Removed no longer used inline func to_rdev() o Added regulator_get_init_drvdata() to retrieve init data. o Added struct device* as parameter to regulator_register(). o Changed my email address. Signed-off-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-07-30regulator: TI bq24022 Li-Ion Charger driverPhilipp Zabel
This adds a regulator driver for the TI bq24022 Single-Chip Li-Ion Charger with its nCE and ISET2 pins connected to GPIOs. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
2008-07-30regulator: core kbuild filesLiam Girdwood
This patch adds kernel build support for the regulator core. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
2008-07-30regulator: regulator test harnessMark Brown
This provides a virtual regulator test harness which exposes a sysfs interface for setting power requirements, intended for test purposes only. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
2008-07-30regulator: add support for fixed regulators.Mark Brown
This adds supports for regulator that are not software controlable. It allows them to coexist in systems with mixed supplies. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
2008-07-30regulator: regulator framework coreLiam Girdwood
This adds the regulator framework core. This framework is designed to provide a generic interface to voltage and current regulators within the Linux kernel. It's intended to provide voltage and current control to client or consumer drivers and also provide status information to user space applications through a sysfs interface. The intention is to allow systems to dynamically control regulator output in order to save power and prolong battery life. This applies to both voltage regulators (where voltage output is controllable) and current sinks (where current output is controllable). This framework safely compiles out if not selected so that client drivers can still be used in systems with no software controllable regulators. Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>