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2011-01-12regulators: Clean out unused code in ab8500 regulatorsBengt Jonsson1-16/+0
The find_regulator function was unused so it has been removed. The ab8500 pointer in the regulator info structure was unused and so it has also been removed. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulators: Fixed errors in ab8500 register mappingBengt Jonsson1-6/+6
For INTCORE and TVOUT regulators, the low power register bit is included in the mask so that enable will set the regulator in normal (high power) mode. ANAMIC1, ANAMIC2, DMIC regulator settings are swapped with each other so that the correct regulator gets enabled/disabled. ANA regulator register address is corrected. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulators: Moved define for number of regulators in ab8500Bengt Jonsson1-1/+7
The define for number of regulators is moved from ab8500-core to ab8500-regulator so that the regulator driver can be updated independently of ab8500-core. This also changes the platform configuration structure of ab8500-core so that it contains a pointer to the regulator_init_data array plus number of regulators instead of an fixed size array of pointers to regulator_init_data. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: add driver for tps6524x regulatorCyril Chemparathy3-0/+704
TPS6524X provides three step-down converters and two general-purpose LDO voltage regulators. This device is interfaced using SPI. Signed-off-by: Cyril Chemparathy <cyril@ti.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Convert WM831x drivers to use get_voltage_sel()Mark Brown2-16/+16
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Allow drivers to report voltages as selectorsMark Brown1-3/+22
Since drivers already have to provide an API for translating selectors into voltages they may as well just report the selector values directly to the core API rather than implement the lookup themselves. The old interface is left in place for now, but may be removed in future. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Use _regulator_get_voltage() consistentlyMark Brown1-8/+10
Rather than referencing the get_voltage() operation directly in the ops struct use the internal _regulator_get_voltage() API call to do so, facilitating refactoring. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12drivers/regulator: Update WARN usesJoe Perches1-2/+1
Align arguments. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Take into account the requirements of all consumersThomas Petazzoni1-0/+25
Extend the regulator_set_voltage() function to take into account the voltage requirements of all consumers of the regulator being changed, in order to set the voltage to the minimum voltage acceptable to all consumers. The existing behaviour was that the latest regulator_set_voltage() call would win over previous regulator_set_voltage() calls even if setting the voltage to a non-acceptable level from other consumers. Signed-off-by: Thomas Petazzoni <t-petazzoni@ti.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Add and use rdev_<level> macrosJoe Perches1-81/+65
On Tue, 2010-11-30 at 10:52 +0000, Mark Brown wrote: > On Mon, Nov 29, 2010 at 05:12:56PM -0800, Joe Perches wrote: > > Just to please broonie... > > Signed-off-by: Joe Perches <joe@perches.com> > As usual when fixing review issues please revise your original patch > rather than posting a fresh patch. Here's an earlier comment: On Thu, 2010-11-18 at 13:30 +0000, Mark Brown wrote: > This looks reasonable, please rebase on top of Daniel's patches and > submit it properly (with changelog and so on). Sometimes it's simpler for an upstream maintainer to do something like: git am -s <patch1.mbox> patch -p1 < patch2.mbox git commit --amend file instead of back and forthing. Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Remove duplicate consts from mc13873 driver voltage tablesMark Brown1-18/+18
They're not needed and sparse is verbosely upset about them. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Copy constraints from regulators when initialising themMark Brown1-7/+12
Currently the regulator API uses the constraints structure passed in to the core throughout the lifetime of the object. This means that it is not possible to mark the constraints as __initdata so if the kernel supports many boards the constraints for all of them are kept around throughout the lifetime of the system, consuming memory needlessly. By copying constraints that are actually used we allow the use of __initdata, saving memory when multiple boards are supported. This also means the constraints can be const. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Fix prototype for MAX8998 buck set_voltage()Mark Brown1-1/+1
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Remove regulator core version announcementMark Brown1-4/+0
The version hasn't been updated since the regulator API was merged in 2.6.27 so just remove it - now we're in mainline the kernel version is much more useful. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Fix obfuscated log messagesMark Brown1-8/+6
Don't use %s to format fixed static strings into log messages, it just makes searching for and reading the message in the kernel source needlessly hard. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12drivers: regulator: core: convert to using pr_ macrosDaniel Walker1-80/+57
The regulator framework uses a lot of printks with a specific formatting using __func__. This converts them to use pr_ calls with a central format string. Cc: bleong@codeaurora.org Signed-off-by: Daniel Walker <dwalker@codeaurora.org> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12drivers: regulator: core: use pr_fmtDaniel Walker1-10/+12
This adds a pr_fmt line which uses the __func__ macro. I also convert the current pr_ lines to remove their __func__ usage. Cc: bleong@codeaurora.org Signed-off-by: Daniel Walker <dwalker@codeaurora.org> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Fix typo in PCAP regulator_set_voltage()Mark Brown1-1/+1
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: enable supply regulator only when use count is zeroBengt Jonsson1-9/+11
Supply regulators are disabled only when the last reference count is removed on the child regulator (the use count goes from 1 to 0). This patch changes the behaviour of enable so the supply regulator is enabled only when the use count of the child regulator goes from 0 to 1. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Add basic trace facilitiesMark Brown1-0/+17
Provide some basic trace facilities to the regulator API. We generate events on regulator enable, disable and voltage setting over the actual hardware operations (which are assumed to be the expensive ones which require interaction with the actual device). This is intended to facilitate debug of the performance and behaviour with consumers allowing unified traces to be generated including the regulator operations within the context of the other components of the system. For enable we log the explicit delay for the voltage ramp separately to the interaction with the hardware to highlight the time consumed in I/O. We should add a similar delay for voltage changes, though there the relatively small magnitude of the changes in the context of the I/O costs makes it much less critical for most regulators. Only hardware interactions are currently traced as the primary focus is on the performance and synchronisation of actual hardware interactions. Additional tracepoints for debugging of the logical operations can be added later if required. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: Report actual configured voltage to set_voltage()Mark Brown26-78/+200
Change the interface used by set_voltage() to report the selected value to the regulator core in terms of a selector used by list_voltage(). This allows the regulator core to know the voltage that was chosen without having to do an explict get_voltage(), which would be much more expensive as it will generally access hardware. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-12regulator: lock supply in regulator enableMattias Wallin1-11/+9
This patch add locks around regulator supply enable. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-13regulator: Update LDO2 for WM8958Mark Brown1-2/+21
LDO2 has a slightly different range of supported voltages on WM8958 so update the selector<->voltage mappings to match. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09regulator: tps6586x: correct register tableDanny Huang1-3/+3
Correct the register table for SM2, LDO8, RTC Change-Id: I45348cec5ffbb7da9bd7523764fb611b537236b8 Signed-off-by: Danny Huang <dahuang@nvidia.com> Signed-off-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09regulator: tps6586x: Handle both enable reg/bits being the sameDanny Huang1-0/+4
Change-Id: I40400bb65eab496bb1becd26b37a9653b99d4f41 Signed-off-by: Danny Huang <dahuang@nvidia.com> Signed-off-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> (Split into separate patches) Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09regulator: tps6586x: Fix TPS6586X_DVM to store goreg/bitDanny Huang1-6/+13
Change-Id: Idacf5e1e51dbbbcd5ea93f310a4e907977e7359e Signed-off-by: Danny Huang <dahuang@nvidia.com> Signed-off-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> (Split into separate patches) (Minor formatting fixes) Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09regulator: tps6586x: Add missing bit mask generationDanny Huang1-2/+2
Change-Id: I76eaceb31b56264f6978af15db1e6fc7e2e01b5a Signed-off-by: Danny Huang <dahuang@nvidia.com> Signed-off-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> (Split into separate patches) Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: fix kernel-doc for set_consumer_device_supplyRandy Dunlap1-1/+1
Fix kernel-doc warning for set_consumer_device_supply(): Warning(drivers/regulator/core.c:912): missing initial short description on line: * set_consumer_device_supply: Bind a regulator to a symbolic supply Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: enable supply regulator only when use count is zeroBengt Jonsson1-9/+11
Supply regulators are disabled only when the last reference count is removed on the child regulator (the use count goes from 1 to 0). This patch changes the behaviour of enable so the supply regulator is enabled only when the use count of the child regulator goes from 0 to 1. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: twl-regulator - fix twlreg_set_modeAxel Lin1-3/+3
The Singular Message is 16 bits: DEV_GRP[15:13] MT[12] RES_ID[11:4] RES_STATE[3:0] Current implementation return immedially after sucessfuly write MSB part. To properly set mode, we need to write the complete message ( MSB and LSB ). In twl.h, now we have defines for PM Master module register offsets, use it instead of hard coded 0x15/0x16. Use "message & 0xff" to ensure we send correct value for LSB. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Lesly Arackal Manuel <leslyam@ti.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: lock supply in regulator enableMattias Wallin1-0/+2
This patch add locks around regulator supply enable. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: Return proper error for regulator_register()Axel Lin1-0/+2
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: Ensure enough delay time for enabling regulatorAxel Lin1-2/+4
Integer division will truncate the result, this patch ensures we have enough delay time for enabling regulator. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: Remove a redundant device_remove_file call in create_regulatorAxel Lin1-1/+0
We already have device_remove_file() in error path, no need to call it before goto link_name_err. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: Staticise mc13783_powermisc_rmw()Mark Brown1-2/+2
It is not used outside this driver so no need to make the symbol global. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Alberto Panizzo <maramaopercheseimorto@gmail.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-30regulator: regulator disable supply fixMattias Wallin1-0/+1
This patch fixes a disable failure when regulator supply is used. A while loop in regulator disable checks for supply pointer != NULL but the pointer is not always updated, resulting in the while loop running too many times causing a disable failure. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-29regulator: max8998 BUCK1/2 voltage change with use of GPIOsLukasz Majewski1-21/+193
max8998_pmic_probe: - modified to check if valid pins are defined at platform data - maximal voltage values (predefined at platform data) are uploaded to max8998 device max8998_set_voltage_buck: - BUCK1/2 voltages change between values already defined - Checks if valid GPIO pins are passed from platform data - If requested voltage cannot be satisfied from already defined values, then one of free slots is used - Predefined maximum voltages (as defined at platform data) are always available Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29regulator: max8998 BUCK1/2 internal voltages and indexes definedLukasz Majewski1-2/+8
BUCK1/2 internal voltages and indexes defined in the struct max8998_data max_get_voltage_register now uses index values to chose proper register More generic BUCK1/2 registers names provided Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29regulator: Separate set_voltage for max8998 ldo and buckLukasz Majewski1-3/+40
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29mfd: Align ab8500 with the abx500 interfaceMattias Wallin1-36/+50
This patch makes the ab8500 mixed signal chip expose the same interface for register access as the ab3100, ab3550 and ab5500 chip. The ab8500_read() and ab8500_write() is removed and replaced with abx500_get_register_interruptible() and abx500_set_register_interruptible(). Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29mfd: Use i2c_client as an argument on MAX8998 i2c routinesJoonyoung Shim1-6/+11
The MAX8998 chip have regulator and rtc features. The i2c slave address of regulator and rtc is different, so needs each i2c client on i2c operation functions. Also, this patch exports i2c operation functions instead of callback to make easy to read. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-28regulator: max8952 - fix max8952_set_voltageAxel Lin1-1/+1
In current implementation, vid is declared as u8, then "vid == -1" is always false, and "vid >= 0" is always true. Thus change it to s8. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28regulator: max8952 - fix max8952_pmic_probe error pathAxel Lin1-2/+8
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28regulator: fix build when CONFIG_REGULATOR_DUMMY=nAnand Gadiyar1-4/+0
Commit f03f91826 (regulator: Add option for machine drivers to enable the dummy regulator) in the regulators tree seems to have introduced the following build break when CONFIG_REGULATOR_DUMMY is disabled. Fix this. CC drivers/regulator/dummy.o drivers/regulator/dummy.c:41: error: redefinition of 'regulator_dummy_init' drivers/regulator/dummy.h:28: note: previous definition of 'regulator_dummy_init' was here make[2]: *** [drivers/regulator/dummy.o] Error 1 make[1]: *** [drivers/regulator] Error 2 make: *** [drivers] Error 2 Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28regulator: avoid deadlock when disabling regulator with supplyJeffrey Carlyle1-9/+26
I have a regulator A that sets regulator B as its supply. When I call set_supply to add B as the supply for A, regulator A gets added to the supply_list for regulator B. When I call regulator_disable(A), I end up with a call chain like this: regulator_disable(A) > mutex_lock(A) > _regulator_disable(A) >> _regulator_disable(B) >>> _notifier_call_chain(B) >>>> mutex_lock(A) Which results in dead lock since we are trying to acquire the mutex lock for regulator A which we already hold. This patch addresses this issue by moving the call to disable regulator B outside of the lock aquired inside the initial call to regulator_disable. This change also addresses the issue of not acquiring the mutex for regulator B before calling _regulator_disable(B). Signed-off-by: Jeffrey Carlyle <jeff.carlyle@motorola.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28regulator: Add option for machine drivers to enable the dummy regulatorMark Brown2-2/+23
Allow machine drivers to explicitly enable the use of the dummy regulator, enabling simpler support for systems with only a few specific supplies visible to software. It is strongly recommended that this is not used on systems with substantial software control over their PMICs, for maximum functionality constrints should be as fully specified as possible. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28Regulator: lp3972 cleanupAxel Lin1-7/+18
This patch includes below fixes based on Mark's comment. - Return actual error if i2c_smbus_read_byte_data() fail - Add spaces around bitwise AND operator(&) to improve readability - Add comment to explain why we need to update voltage change control register for LDO1 and LDO5 - Logging the value for diagnostics if chip reported incorrect voltage value - Add __devinit annotation for setup_regulators() - Show system control register1 value if the value is mismatched - Logging the value for diagnostics if failed to detect device Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28Regulator: LP3972 PMIC regulator driverAxel Lin3-0/+657
This patch adds regulator drivers for National Semiconductors LP3972 PMIC. This LP3972 PMIC controller has 3 DC/DC voltage converters and 5 low drop-out (LDO) regulators. LP3972 PMIC controller uses I2C interface. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-28MAX8952 PMIC Driver Initial ReleaseMyungJoo Ham3-0/+369
MAX8952 PMIC is used to provide voltage output between 770mV - 1400mV with DVS support. In this initial release, users can set voltages for four DVS modes, RAMP delay values, and SYNC frequency. Controlling FPWM/SYNC_MODE/Pull-Down/Ramp Modes and reading CHIP_ID is not supported in this release. If GPIO of EN is not valid in platform data, the driver assumes that it is always-on. If GPIO of VID0 or VID1 is invalid, the driver pulls down VID0 and VID1 to fix DVS mode as 0 and disables DVS support. We assume that V_OUT is capable to provide every voltage from 770mV to 1.40V in 10mV steps although the data sheet has some ambiguity on it. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> -- v2: - Style correction - Can accept platform_data with invalid GPIOs - Removed unnecessary features - Improved error handling Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-07Merge branch 'i2c-for-linus' of ↵Linus Torvalds2-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: of/i2c: Fix module load order issue caused by of_i2c.c i2c: Fix checks which cause legacy suspend to never get called i2c-pca: Fix waitforcompletion() return value i2c: Fix for suspend/resume issue i2c: Remove obsolete cleanup for clientdata
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