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* leds: Fix bounds checking of wm8350->pmic.ledRoel Kluin2009-01-301-1/+1
| | | | | | | Fix bounds checking of wm8350->pmic.led Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: move bq24022 init back to module_init instead of subsys_initcallPhilipp Zabel2009-01-301-5/+1
| | | | | | | | | | This workaround was needed when regulator/ was not linked before both power/ and usb/otg/ in drivers/Makefile. Now that it is even linked before mfd/, this patch makes sure that bq24022 isn't probed before the GPIO expander is set up. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* move wm8400-regulator's probe function to .devinit.textUwe Kleine-König2009-01-171-1/+1
| | | | | | | | | | | | | | | A pointer to wm8400_regulator_probe is passed to the core via platform_driver_register and so the function must not disappear when the .init sections are discarded. Otherwise (if also having HOTPLUG=y) unbinding and binding a device to the driver via sysfs will result in an oops as does a device being registered late. An alternative to this patch is using platform_driver_probe instead of platform_driver_register plus removing the pointer to the probe function from the struct platform_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: PCF50633 pmic driverBalaji Rao2009-01-113-0/+337
| | | | | | | | | | | Changes from V1: - Removed support for suspend_enable & suspend_disable functions. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-ledsLinus Torvalds2009-01-091-0/+91
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: ledtrig-timer - on deactivation hardware blinking should be disabled leds: Add suspend/resume to the core class leds: Add WM8350 LED driver leds: leds-pcs9532 - Move i2c work to a workqueque leds: leds-pca9532 - fix memory leak and properly handle errors leds: Fix wrong loop direction on removal in leds-ams-delta leds: fix Cobalt Raq LED dependency leds: Fix sparse warning in leds-ams-delta leds: Fixup kdoc comment to match parameter names leds: Make header variable naming consistent leds: eds-pca9532: mark pca9532_event() static leds: ALIX.2 LEDs driver
| * leds: Add WM8350 LED driverMark Brown2009-01-081-0/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The voltage and current regulators on the WM8350 AudioPlus PMIC can be used in concert to provide a power efficient LED driver. This driver implements support for this within the standard LED class. Platform initialisation code should configure the LED hardware in the init callback provided by the WM8350 core driver. The callback should use wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and wm8350_dcdc_set_slot() to configure the operating parameters of the regulators for their hardware and then then use wm8350_register_led() to instantiate the LED driver. This driver was originally written by Liam Girdwood, though it has been extensively modified since then. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
* | regulator: catch some registration errorsDavid Brownell2009-01-081-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | Prevent registration of duplicate "struct regulator" names. They'd be unavailable, and clearly indicate something wrong. [Edited to remove check for NULL consumer device until we have a solution for things like cpufreq -- broonie] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: Fix some kerneldoc rendering issuesMark Brown2009-01-081-7/+11
| | | | | | | | | | | | | | | | | | There are some minor textual changes in here as well, mostly to enable() and disable() but the primary goal of these changes is to fix misrenderings of the kerneldoc documentation for the regulator API. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: Add missing kerneldocMark Brown2009-01-081-0/+1
| | | | | | | | | | | | | | This is only the documentation that the kerneldoc system warns about. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: Clean up kerneldoc warningsMark Brown2009-01-081-22/+22
| | | | | | | | | | | | | | | | | | Remove kerneldoc warnings that don't relate to missing documentation, mostly by renaming parameters in the documentation to match their actual names. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: Remove extraneous kerneldoc annotationsMark Brown2009-01-081-2/+2
| | | | | | | | | | | | | | | | | | Some of the internal structures have no kerneldoc but the ** at the start of the comment marking them for documentation. Remove the annotation until some is added. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: move set_machine_constraints after regulator device initializationMike Rapoport2009-01-081-5/+5
| | | | | | | | | | | | | | | | Calling set_machine_constraints before regulator device initialization causes crash when constraints have apply_uV set. Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: da903x: make da903x_is_enabled return 0 or 1Mike Rapoport2009-01-081-1/+1
| | | | | | | | | | Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: da903x: add '\n' to error messagesMike Rapoport2009-01-081-5/+5
| | | | | | | | | | | | Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: sysfs attribute reduction (v2)David Brownell2009-01-081-48/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up the sysfs interface to regulators by only exposing the attributes that can be properly displayed. For example: when a particular regulator method is needed to display the value, only create that attribute when that method exists. This cleaned-up interface is much more comprehensible. Most regulators only support a subset of the possible methods, so often more than half the attributes would be meaningless. Many "not defined" values are no longer necessary. (But handling of out-of-range values still looks a bit iffy.) Documentation is updated to reflect that few of the attributes are *always* present, and to briefly explain why a regulator may not have a given attribute. This adds object code, about a dozen bytes more than was removed by the preceding patch, but saves a bunch of per-regulator data associated with the now-removed attributes. So there's a net reduction in memory footprint. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: code shrink (v2)David Brownell2009-01-081-67/+44
| | | | | | | | | | | | | | | | Shrink regulator core by removing duplication in attribute printing and probe() cleanup paths. Saves about 340 bytes (object) on ARM. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: improved mode error checksDavid Brownell2009-01-081-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Minor bugfixes in handling of regulator modes: - have the routine verifying regulator modes check against the set of legal modes (!); - have regulator_set_optimum_mode() verify the return value of regulator_ops.get_optimum_mode(), like drms_uA_update(); - one call to regulator_ops.set_mode() treated zero as a failure code; make this consistent with other callers. Both regulator_set_mode() and regulator_set_optimum_mode() now require valid_ops_mask to include REGULATOR_CHANGE_MODE; that seems like a bugfix too. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: enable/disable refcountingDavid Brownell2009-01-081-35/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the <linux/regulator.h> framework treat enable/disable call pairs like the <linux/clk.h> and <linux/interrupt.h> frameworks do: they're refcounted, so that different parts of a driver don't need to put work into coordination that frameworks normally handle. It's a minor object code shrink. It also makes the regulator_is_disabled() kerneldoc say what it's actually returning: return value is not a refcount, and may report an error (e.g. I/O error from I2C). It also fixes some minor regulator_put() goofage: removing unlocked access to the enable state. (But still not making regulator put/get match the refcounting pattern they invoke.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | regulator: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-01-081-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of a larger patch series which will remove the "char bus_id[20]" name string from struct device. The device name is managed in the kobject anyway, and without any size limitation, and just needlessly copied into "struct device". To set and read the device name dev_name(dev) and dev_set_name(dev) must be used. If your code uses static kobjects, which it shouldn't do, "const char *init_name" can be used to statically provide the name the registered device should have. At registration time, the init_name field is cleared, to enforce the use of dev_name(dev) to access the device name at a later time. We need to get rid of all occurrences of bus_id in the entire tree to be able to enable the new interface. Please apply this patch, and possibly convert any remaining remaining occurrences of bus_id. We want to submit a patch to -next, which will remove bus_id from "struct device", to find the remaining pieces to convert, and finally switch over to the new api, which will remove the 20 bytes array and does no longer have a size limitation. Thanks, Kay From: Kay Sievers <kay.sievers@vrfy.org> Subject: regulator: struct device - replace bus_id with dev_name(), dev_set_name() Cc: Liam Girdwood <lrg@slimlogic.co.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* mfd: Support configurable numbers of DCDCs and ISINKs on WM8350Mark Brown2009-01-041-0/+7
| | | | | | | | Some WM8350 variants have fewer DCDCs and ISINKs. Identify these at probe and refuse to use the absent DCDCs when running on these chips. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* regulator: Use menuconfig in KconfigTakashi Iwai2008-11-091-11/+4
| | | | | | | | | Use menuconfig instead of flat configs so that you can disable/enable regulator items with one selection. Also, use depends instead of reverse selections to make life easier, too. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: da903x regulator bug fixJonathan Cameron2008-10-301-12/+17
| | | | | | | | | | | 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>
* da903x: add regulator support for DA9030/DA9034Eric Miao2008-10-133-0/+522
| | | | | | 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>
* regulator: Add WM8350 regulator supportMark Brown2008-10-133-0/+1441
| | | | | | | | | | | | 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>
* regulator: Export regulator name via sysfsMark Brown2008-10-131-0/+18
| | | | | | | | 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>
* regulator: Add WM8400 regulator supportMark Brown2008-10-133-0/+376
| | | | | | | | | | | | 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>
* regulator: Enable regulators marked as always_onMark Brown2008-10-131-2/+17
| | | | | | | | | 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>
* regulator: Additional diagnostics for machine constraintsMark Brown2008-10-131-4/+19
| | | | | | | | 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>
* regulator: check for init_data on registrationMark Brown2008-10-131-0/+3
| | | | | | | | | 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>
* regulator: core - Rework machine API to remove string based functions.Liam Girdwood2008-10-132-243/+235
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* regulator: TI bq24022 Li-Ion Charger driverPhilipp Zabel2008-07-303-0/+179
| | | | | | | | 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>
* regulator: core kbuild filesLiam Girdwood2008-07-302-0/+59
| | | | | | | 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>
* regulator: regulator test harnessMark Brown2008-07-301-0/+345
| | | | | | | | | 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>
* regulator: add support for fixed regulators.Mark Brown2008-07-301-0/+129
| | | | | | | | | 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>
* regulator: regulator framework coreLiam Girdwood2008-07-301-0/+1903
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>
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