Commit Graph

291 Commits

Author SHA1 Message Date
Axel Lin df11e506d3 regulator: core: Add back the const qualifier for ops of struct regulator_desc
Fix below build warning:
CC [M]  drivers/regulator/hi6421-regulator.o
drivers/regulator/hi6421-regulator.c:356:2: warning: initialization discards 'const' qualifier from pointer target type [enabled by default]

This is a revert of commit 716845ebeb ("regulator: core: Fix build error due
to const qualifier for ops"). The build error was fixed by commit 39f5460d7f
("regulator: core: add const to regulator_ops and fix build error in mc13892").

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-21 09:49:08 -05:00
Axel Lin 716845ebeb regulator: core: Fix build error due to const qualifier for ops
Drop const qualifier for ops of struct regulator_desc.
Allow regulator drivers to update ops before registering regulator.

Fix below build error:
  CC [M]  drivers/regulator/mc13892-regulator.o
drivers/regulator/mc13892-regulator.c: In function 'mc13892_regulator_probe':
drivers/regulator/mc13892-regulator.c:586:3: error: assignment of member 'set_mode' in read-only object
drivers/regulator/mc13892-regulator.c:588:3: error: assignment of member 'get_mode' in read-only object
make[2]: *** [drivers/regulator/mc13892-regulator.o] Error 1
make[1]: *** [drivers/regulator] Error 2
make: *** [drivers] Error 2

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-18 09:10:34 -05:00
Guodong Xu 871f565055 regulator: core: add guard delay between calling regulator_disable and _enable
Some regulator require a minimum delay between its disable and next enable.
This is to avoid damages when out-of-range frequent disable/enable of a
single regulator can bring to the regulator chip.

Add @off_on_delay to struct regulator_desc. Device drivers' can use this field
to set this guard time.

Add @last_off_jiffy to struct regulator_dev. When @off_on_delay is set by
driver, regulator core can store its last off (disable) time into this field.

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16 16:55:42 -05:00
Guodong Xu 272e2315fa regulator: core: add const qualifier to ops in struct regulator_desc
struct regulator_ops *ops is a member in struct regulator_desc, which gets
its value from individual regulator driver upon regulator_register() and
is used by regulator core APIs. It's not allowed for regulator core to
modify any of these callbacks in *ops. Add 'const' qualifier to enforce that.

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16 16:55:42 -05:00
James Ban 005547e082 regulator: da9211: support DA9213
This is a patch for supporting DA9213.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16 16:46:22 -05:00
Mark Brown a627506a01 Merge remote-tracking branches 'regulator/topic/da9211', 'regulator/topic/getreg', 'regulator/topic/gpio' and 'regulator/topic/lp872x' into regulator-next 2014-08-05 18:29:21 +01:00
Mark Brown 862f9f840d Merge remote-tracking branches 'regulator/topic/88pm800', 'regulator/topic/ab8500', 'regulator/topic/act8865', 'regulator/topic/as3722' and 'regulator/topic/bcm590xx' into regulator-next 2014-08-05 18:29:18 +01:00
Beniamino Galvani ac0c0ea8b6 regulator: act8865: add support for act8846
Add device id and definition of registers and regulators to support
the act8846 PMU.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Tested-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-05 18:02:53 +01:00
Beniamino Galvani 50a03e35b0 regulator: act8865: prepare support for other act88xx devices
This patch prepares support for other devices in the act88xx family of
PMUs manufactured by Active-Semi.

http://www.active-semi.com/products/power-management-units/act88xx/

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Tested-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-05 18:02:52 +01:00
Mark Brown 3bc0312e67 regulator: Add missing statics and inlines for stub functions
So we don't get multiple definitions.

Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-29 12:59:48 +01:00
Tuomas Tynkkynen 04eca28cde regulator: Add helpers for low-level register access
Add helper functions that allow regulator consumers to obtain low-level
details about the regulator hardware, like the voltage selector register
address and such. These details can be useful when configuring hardware
or firmware that want to do low-level access to regulators, with no
involvement from the kernel.

The use-case for Tegra is a voltage-controlled oscillator clocksource
which has control logic to change the supply voltage via I2C to achieve
a desired output clock rate.

Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-25 18:43:48 +01:00
James Ban 1028a37daa regulator: da9211: new regulator driver
This is the driver for the Dialog DA9211 Multi-phase 12A DC-DC Buck
Converter regulator. It communicates via an I2C bus to the device.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-14 19:15:56 +01:00
Axel Lin 03187c72db regulator: ab8500: Remove ab8500_regulator_debug_init/exit()
CONFIG_REGULATOR_AB8500_DEBUG is always not defined.
ab8500_regulator_debug_init() is not called at all now,
ab8500_regulator_debug_exit() simply return 0, thus remove them.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-22 11:51:47 +01:00
Mark Brown c3313b0ce8 Merge remote-tracking branch 'regulator/fix/core' into regulator-linus 2014-06-16 16:05:56 +01:00
Arnd Bergmann b14903e10a regulator: add regulator_can_change_voltage stub
When CONFIG_REGULATOR is not set, we cannot call
regulator_can_change_voltage() from a device driver, which results
in a build error like

video/fbdev/omap2/dss/hdmi5.c: In function 'hdmi_init_regulator':
video/fbdev/omap2/dss/hdmi5.c:149:2: error: implicit declaration of function 'regulator_can_change_voltage' [-Werror=implicit-function-declaration]

even for drivers that don't require the regulator API normally.
Such a use was recently added in the omap2+ hdmi driver.

This avoids the problem by adding a static inline function
stub in the API header, as we have for most of the other
regulator functions as well.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Brown <broonie@kernel.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-04 16:33:39 +01:00
Mark Brown b58e917bf9 Merge remote-tracking branches 'regulator/topic/s5m8767', 'regulator/topic/stub', 'regulator/topic/tps65090', 'regulator/topic/tps65217' and 'regulator/topic/tps65218' into regulator-next 2014-06-02 17:08:12 +01:00
Mark Brown 42398dbdea Merge remote-tracking branch 'regulator/topic/core' into regulator-next 2014-06-02 17:08:02 +01:00
Viresh Kumar d660e92a97 regulators: Add definition of regulator_set_voltage_time() for !CONFIG_REGULATOR
We already have dummy implementation for most of the regulators APIs for
!CONFIG_REGULATOR case and were missing it for regulator_set_voltage_time().

Found this issue while compiling cpufreq-cpu0 driver without regulators support
in kernel.

drivers/cpufreq/cpufreq-cpu0.c: In function ‘cpu0_cpufreq_probe’:
drivers/cpufreq/cpufreq-cpu0.c:186:3: error: implicit declaration of function ‘regulator_set_voltage_time’ [-Werror=implicit-function-declaration]

Fix this by adding dummy definition for regulator_set_voltage_time().

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-28 18:49:26 +01:00
Lee Jones 9f8c0fe954 regulator: Constify the pointer to alias name array
Toughen-up checks for read-only regulator names.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-23 18:55:23 +01:00
Tim Kryger df7926fffa regulator: core: Return error in get optional stub
Drivers that call regulator_get_optional are tolerant to the absence of
that regulator.  By modifying the value returned from the stub function
to match that seen when a regulator isn't present, callers can wrap the
regulator logic with an IS_ERR based conditional even if they happen to
call regulator_is_supported_voltage.  This improves efficiency as well
as eliminates the possibility for a very subtle bug.

Signed-off-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-18 15:11:54 +01:00
Mark Brown 7b836485d4 Merge remote-tracking branches 'regulator/topic/max8973', 'regulator/topic/max8997', 'regulator/topic/max8998', 'regulator/topic/mc13xxx', 'regulator/topic/pfuze100', 'regulator/topic/rc5t583' and 'regulator/topic/s2mps11' into regulator-next 2014-03-26 16:58:11 +00:00
Carlo Caione ca5d1b3524 regulator: helpers: Modify helpers enabling multi-bit control
This patch extends the regulator helpers to account for device that use
multiple bits for control when using regmap enable/disable/bypass ops.

The actual regulator helpers wrongly assume that the regulator control
is always performed using single bits, using in the regulator_desc
struct only two parameters *_reg and *_mask defining register and mask
for control.

This patch extends this struct and introduces the helpers to take into
account devices where control is performed using multiple bits and
specific multi-bit values are used for enabling/disabling/bypassing the
regulator.

Signed-off-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-06 17:30:10 +08:00
Robin Gong f2518480c7 regulator: pfuze100: add pfuze200 support
support pfuze200 chip which remove SW1C and SW4 based on pfuze100.

Signed-off-by: Robin Gong <b38343@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-04 17:40:31 +08:00
Wenyou Yang 33036f48d1 regulator: act8865: add PMIC act8865 driver
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-24 13:47:40 +00:00
Mark Brown aef393da75 Merge remote-tracking branch 'regulator/topic/optional' into regulator-next 2013-10-24 11:11:39 +01:00
Mark Brown 4c35c8676f Merge remote-tracking branch 'regulator/topic/linear' into regulator-next 2013-10-24 11:11:37 +01:00
Mark Brown 706664c290 Merge remote-tracking branch 'regulator/topic/fixed' into regulator-next 2013-10-24 11:11:36 +01:00
Mark Brown 81e439f476 Merge remote-tracking branch 'regulator/topic/core' into regulator-next 2013-10-24 11:11:33 +01:00
Mark Brown 420118d483 Merge remote-tracking branch 'regulator/topic/alias' into regulator-next 2013-10-24 11:11:32 +01:00
Charles Keepax a06ccd9c37 regulator: core: Add ability to create a lookup alias for supply
These patches add the ability to create an alternative device on which
a lookup for a certain supply should be conducted.

A common use-case for this would be devices that are logically
represented as a collection of drivers within Linux but are are
presented as a single device from device tree. It this case it is
necessary for each sub device to locate their supply data on the main
device.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-18 00:56:05 +01:00
Axel Lin 8828bae464 regulator: Add REGULATOR_LINEAR_RANGE macro
Add REGULATOR_LINEAR_RANGE macro and convert regulator drivers to use it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-11 12:49:16 +01:00
Axel Lin e277e65680 regulator: Remove max_uV from struct regulator_linear_range
linear ranges means each range has linear voltage settings.
So we can calculate max_uV for each linear range in regulator core rather than
set the max_uV field in drivers.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-11 12:49:12 +01:00
Laxman Dewangan 00c877c69b regulator: core: add support for configuring turn-on time through constraints
The turn-on time of the regulator depends on the regulator device's
electrical characteristics. Sometimes regulator turn-on time also
depends on the capacitive load on the given platform and it can be
more than the datasheet value.

The driver provides the enable-time as per datasheet.

Add support for configure the enable ramp time through regulator
constraints so that regulator core can take this value for enable
time for that regulator.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-18 17:13:02 +01:00
Randy Dunlap 7c2330f1af regulator: fix fatal kernel-doc error
Fix fatal kernel-doc error in <linux/regulator/driver.h>:

Error(include/linux/regulator/driver.h:52): cannot understand prototype: 'struct regulator_linear_range '

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
[Rewrote first line -- broonie]
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17 11:49:25 +01:00
Mark Brown 4f0ac6dabf regulator: core: Remove unused regulator_use_dummy_regulator()
No boards have used this functionality and the new default of providing
dummy regulators by default provides a better solution to the problem it
was trying to solve.

Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17 00:30:25 +01:00
Mark Brown b33e46bcdc regulator: core: Provide managed regulator registration
Many regulator drivers have a remove function that consists solely of
calling regulator_unregister() so provide a devm_regulator_register()
in order to allow this repeated code to be removed and help eliminate
error handling code.

Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17 00:27:53 +01:00
Laxman Dewangan 5a523605af regulator: core: provide fixed voltage in desc for single voltage rail
If given rail has the single voltage (n_voltages = 1) then provide the
rail voltage through regulator descriptor so that core can use this
value for finding voltage.

This will avoid the implementation of the callback for get_voltage() or
list_voltage() callback on regulator driver.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-10 18:19:52 +01:00
Mark Brown a89f5c7598 Merge remote-tracking branch 'regulator/topic/ramp' into regulator-next 2013-09-01 13:50:20 +01:00
Mark Brown 09f2dd88ff Merge remote-tracking branch 'regulator/topic/pfuze100' into regulator-next 2013-09-01 13:50:18 +01:00
Mark Brown f27a5fb424 Merge remote-tracking branch 'regulator/topic/optional' into regulator-next 2013-09-01 13:50:17 +01:00
Mark Brown 6979380d85 Merge remote-tracking branch 'regulator/topic/max8660' into regulator-next 2013-09-01 13:50:16 +01:00
Mark Brown 446b4665e3 Merge remote-tracking branch 'regulator/topic/fan53555' into regulator-next 2013-09-01 13:50:08 +01:00
Mark Brown 1ad13028e5 Merge remote-tracking branch 'regulator/topic/core' into regulator-next 2013-09-01 13:50:06 +01:00
Matthias Kaehlcke 9efdd27678 regulator: Add devm_regulator_get_exclusive()
Add a resource managed regulator_get_exclusive()

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-29 19:38:33 +01:00
Axel Lin 36f8250e4d regulator: fan53555: Prevent multiple include of fan53555.h
Add define for __FAN53555_H__ to prevent multiple include of the header file.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-07 10:38:16 +01:00
Daniel Mack abe4c51afd regulators: max8660: add DT bindings
This patch adds devicetree bindings for max8660, along with some
documentation.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-02 17:29:54 +01:00
Mark Brown de1dd9fd21 regulator: core: Provide hints to the core about optional supplies
While the majority of supplies on devices are mandatory and can't be
physically omitted for electrical reasons some devices do have optional
supplies and need to know if they are missing, MMC being the most common
of these.

Currently the core accurately reports all errors when regulators are
requested since it does not know if the supply is one that must be provided
even if by a regulator software does not know about or if it is one that
may genuinely be disconnected. In order to allow this behaviour to be
changed and stub regulators to be provided in the former case add a new
regulator request function regulator_get_optional() which provides a hint
to the core that the regulator may genuinely not be connected.

Currently the implementation is identical to the current behaviour, future
patches will add support in the core for returning stub regulators in the
case where normal regulator_get() fails and the board has requested it.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2013-07-31 09:56:39 +01:00
Mark Brown 4bdfb2729c regulator: core: Add missing stub for regulator_get_exclusive()
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-31 09:56:38 +01:00
Robin Gong 3784b6d64d regulator: pfuze100: add pfuze100 regulator driver
Add pfuze100 regulator driver.

Signed-off-by: Robin Gong <b38343@freescale.com>
Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-25 10:34:34 +01:00
Yadwinder Singh Brar 1653ccf4c5 regulator: core: Add support for disabling ramp delay
Some hardwares support disabling ramp delay, so adding ramp_disable flag to
constraints. It will be used to figure out whether ramp_delay in constraints
is explicitly set to zero or its unintialized (zero by default).
And we don't need to call set_voltage_time_sel() for regulators for whom ramp
delay is disabled in constraints.

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-15 11:27:48 +01:00
Mark Brown 94d33c02c7 regulator: core: Add helpers for multiple linear ranges
Many regulators have several linear ranges of selector with different
step sizes, for example offering better resolution at lower voltages.
Provide regulator_{map,list}_voltage_linear_range() allowing these
regulators to use generic code. To do so a table of regulator_linear_range
structs needs to be pointed to from the descriptor.

This was inspired by similar code included in a driver submission from
Chao Xie and Yi Zhang at Marvell.

Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-15 11:20:32 +01:00
Mark Brown dc9ceed6a1 regulator: core: Make set_voltage_tol() try for mid-range first
The expected semantic for something expressed as a tolerance is that it
should deliver the specified value with some deviation allowed but this
is not what set_voltage_tol() currently does. Instead it just passes
the maximum possible range to set_voltage() which will typically result
in a voltage aimed at lower than the target voltage.

Instead first try to set a voltage between the target voltage and the
upper limit, then fall back on the full range. This will be much more
robust against physical variation in systems and makes the API behave
more like users would expect.

Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-15 11:20:08 +01:00
Mark Brown 0a192cc860 Merge remote-tracking branch 'regulator/topic/linar' into regulator-next 2013-07-01 11:17:08 +01:00
Lee Jones 5a49b4a527 regulator: ab8500-ext: Register as a device in its own right
Some platforms don't support the AB8500 external regulators, so instead
of having a list of is_<platform>() calls prior to calling
ab8500_ext_regulator_init() from ab8500_regulator_probe(), we can only
register as a platform device on platforms which require them. It means
we also have more control over them when booting with Device Tree.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonielinaro.org>
2013-06-11 12:50:00 +01:00
Paul Walmsley 2a668a8bc2 regulator: core: add regulator_get_linear_step()
Add regulator_get_linear_step(), which returns the voltage step size
between VSEL values for linear regulators.  This is intended for use
by regulator consumers which build their own voltage-to-VSEL tables.

Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Reviewed-by: Andrew Chew <achew@nvidia.com>
Cc: Matthew Longnecker <mlongnecker@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-06-07 11:19:29 +01:00
Mark Brown a2c05e91b9 Merge remote-tracking branch 'regulator/topic/max8952' into v3.9-rc8 2013-04-28 02:13:43 +01:00
Mark Brown 3dc06c1baf Merge remote-tracking branch 'regulator/topic/gpio' into v3.9-rc8 2013-04-28 02:13:40 +01:00
Mark Brown 1d60a4cf97 Merge remote-tracking branch 'regulator/topic/enable-invert' into v3.9-rc8 2013-04-28 02:13:37 +01:00
Mark Brown 0e340ce1dd Merge remote-tracking branch 'regulator/topic/core' into v3.9-rc8 2013-04-28 02:13:37 +01:00
Mark Brown 97844ede94 Merge remote-tracking branch 'regulator/topic/ascend' into v3.9-rc8 2013-04-28 02:13:36 +01:00
Axel Lin fcf371ee56 regulator: core: Add regulator_map_voltage_ascend() API
A lot of regulator hardware has ascendant voltage list.
This patch adds regulator_map_voltage_ascend() and export it.

Drivers that have ascendant voltage list can use this as their map_voltage()
operation, this is more efficient than default regulator_map_voltage_iterate()
function.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-18 12:09:32 +01:00
Axel Lin 3480c0cab6 regulator: ab8500-ext: Make the return type of ab8500_ext_regulator_exit() void
ab8500_ext_regulator_exit() never fails.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-11 17:43:50 +01:00
Tomasz Figa 3ff4aa95b3 regulator: max8952: Add Device Tree support
This patch adds Device Tree support to max8952 regulator driver.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-05 11:20:52 +01:00
Tomasz Figa 3ec6eb9cc2 regulator: max8952: Separate constraints from platform data struct
This patch modifies platform data structure of max8952 driver to
use pointer to regulator_init_data struct instead of embedding it.

This is a prerequisite for adding Device Tree support for the driver.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-05 11:20:51 +01:00
Zhenhua HUANG 684d5ce4af regulator: ab8500: Introduce aux5, aux6 regulators for AB8540
Introduce aux5, aux6 into ab8540 regulator framework.

Signed-off-by: Zhenhua HUANG <zhenhua.huang@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Maxime COQUELIN <maxime.coquelin@stericsson.com>
Reviewed-by: David PARIS <david.paris@stericsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-03 18:40:26 +01:00
Lee Jones 35e1d5f634 regulator: ab8500-ext: Remove unused REGULATOR_AB8500_EXT guard
Before the AB8500 External Regulator driver was Mainlined, it used
to be conditionally compiled in using the CONFIG_REGULATOR_AB8500_EXT
flag. During the review process that capability was removed, but the
guard controlling prototyping slipped though the net. This patch
cleans it up.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 23:01:41 +01:00
Lee Jones ae0a9a3efc regulator: ab8500: Add support for the ab8540
To obtain full AB8540 regulator support, the AB8500 regulator driver
first needs to know its register layout and their initialisation values
for each. That information is provided via a couple of large data
structures which we provide here.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-01 13:23:38 +01:00
Lee Jones 547f384f33 regulator: ab8500: add support for ab8505
To obtain full AB8505 regulator support, the AB8500 regulator driver
first needs to know its register layout and their initialisation values
for each. That information is provided via a couple of large data
structures which we provide here.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-01 13:23:38 +01:00
Lee Jones da0b0c47dc regulator: ab8500: Init debug from regulator driver
The purpose of this patch is to guarantee that ab8500-debug will
record the regulator registers before they are modified by the
ab8500 regulator driver.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-29 17:50:35 +00:00
Lee Jones 41a06aa738 regulator: ab8500: Remove USB regulator
The USB regulator is controlled by hardware. The software support
was only needed for early hardware (ED) which is no longer supported.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-29 17:50:07 +00:00
Bengt Jonsson 18bc2b3930 regulator: ab8500-ext: Add HW request support
Support for HW request is added in the external regulator
driver. A flag in the board configuration can be set to
let HW control the regulator when there is no SW request.
This means that the regulator will be put in high power
mode when there is a SW request and in HW-request mode
otherwise.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Mattias NILSSON <mattias.i.nilsson@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-29 17:49:09 +00:00
Lee Jones d1a820011b regulator: ab8500-ext: New driver to control external regulators
The ABx500 is capable of controlling three external regulator supplies.
Most commonly on and off are supported, but if an external regulator
chipset or power supply supports high-power and low-power mode settings,
we can control those too.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-29 17:49:07 +00:00
Lee Jones 43a5911b3d regulator: ab8500: Clean out SoC registers
Clean out initialisation that is handled by SoC. Regulator
settings for Vpll (partly), Vsmps1, Vsmps2, Vsmps3 (partly),
Vrf1, Varm, Vape, Vbb, Vmod are cleaned out. They should not
be touched by the kernel.

We also update many of the initialisation values to be more
in-line with the current development efforts of ST-Ericsson
internal engineers.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-28 00:11:02 +00:00
Bengt Jonsson 732805a563 regulator: ab8500: Separate regulator and MFD platform data
The ab8500 MFD should not have knowledge about regulator-
specific platform data like number of regulators and
regulator registers. As the regulator platform data is
about to grow with external regulators, this information
is moved to a new structure provided by the regulator
driver.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Yvan FILLION <yvan.fillion@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-22 12:03:17 +01:00
Lee Jones 33bc8f46a8 regulator: ab8500: Another push to synchronise recent AB8500 developments
This patch ensures that many of the recent developments pertaining to
the AB8500 regulator device are propagated out into the public arena.
It aims to update some of the existing initialisation values in
accordance with internal ST-Ericsson code submissions. This single
patch was originally a collection of updates which have been squashed
together to aid with clarity.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-22 12:03:17 +01:00
Lee Jones 3c1b8438d4 ARM: ux500: regulators: Add mask for configuration
There is already before a register mask in the regulator driver
to allow some bits of a register to be initialized. The register
value is defined in the board configuration. This patch puts a
mask in the board configuration to specify which bits should
actually be altered. The purpose with this patch is to avoid
future mistakes when updating the allowed bits in the regulator
driver.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-22 12:03:16 +01:00
Lee Jones d79df329d0 regulator: ab8500: Further populate initialisation registers
This patch supplies access to some extra settings provided by the
AB8500 regulator device. We also update some of the existing
initialisation values in accordance with internal ST-Ericsson code
submissions. This single patch was originally a collection of updates
which have been squashed together to aid with clarity.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-22 12:03:16 +01:00
Axel Lin 51dcdafcb7 regulator: core: Add enable_is_inverted flag to indicate set enable_mask bits to disable
Add enable_is_inverted flag to indicate set enable_mask bits to disable
when using regulator_enable_regmap and friends APIs.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-05 17:56:39 +08:00
Kim, Milo 7b74d14924 regulator: core: use regulator_ena_pin member
The regulator_dev has regulator_enable_gpio structure.
 'ena_gpio' and 'ena_gpio_invert' were moved to in regulator_enable_gpio.

  regulator_dev   --->   regulator_enable_gpio
  .ena_gpio              .gpio
  .ena_gpio_invert       .ena_gpio_invert

  Pointer, 'ena_pin' is used for checking valid enable GPIO pin.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-04 10:37:57 +08:00
Kim, Milo f19b00da8e regulator: core: support shared enable GPIO concept
A Regulator can be enabled by external GPIO pin.
 This is configurable in the regulator_config.
 At this moment, the GPIO can be owned by only one regulator device.
 In some devices, multiple regulators are enabled by shared one GPIO pin.
 This patch extends this limitation, enabling shared enable GPIO of regulators.

 New list for enable GPIO: 'regulator_ena_gpio_list'
   This manages enable GPIO list.

 New structure for supporting shared enable GPIO: 'regulator_enable_gpio'
   The enable count is used for balancing GPIO control count.
   This count is incremented when GPIO is enabled.
   On the other hand, it's decremented when GPIO is disabled.

 Reference count: 'request_count'
   The reference count, 'request_count' is incremented/decremented on
   requesting/freeing the GPIO. This count makes sure only free the GPIO
   when it has no users.

 How it works
   If the GPIO is already used, skip requesting new GPIO usage.
   The GPIO is new one, request GPIO function and add it to the list of
   enable GPIO.
   This list is used for balancing enable GPIO count and pin control.

 Updating a GPIO and invert code moved
   'ena_gpio' and 'ena_gpio_invert' of the regulator_config were moved to
    new function, regulator_ena_gpio_request().
    Use regulator_enable_pin structure rather than regulator_dev.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-04 10:37:56 +08:00
Mark Brown c8801a8e71 regulator: core: Mark all get and enable calls as __must_check
It's generally important that devices have power when they expect it so
drivers really ought to be checking for errors on the power up paths.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-04 10:35:58 +08:00
Nishanth Menon 5838b032fd regulator: core: update kernel documentation for regulator_desc
commit df367931 (regulator: core: Provide regmap get/set bypass
operations) introduced regulator_[gs]et_bypass_regmap

However structure documentation for regulator_desc needs an update.
./scripts/kernel-doc include/linux/regulator/driver.h >/dev/null
generates:
Warning(include/linux/regulator/driver.h:233): No description found for parameter 'bypass_reg'
Warning(include/linux/regulator/driver.h:233): No description found for parameter 'bypass_mask'

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-01 06:07:22 +00:00
Axel Lin c8520b4c5d regulator: core: Allow specify apply_[reg|bit] for regmap based voltage_sel operations
Some DVM regulators needs to update apply_bit after setting vsel_reg to
initiate voltage change on the output.  This patch adds apply_reg and
apply_bit to struct regulator_desc and update
regulator_set_voltage_sel_regmap() to set apply_bit of apply_reg when
apply_bit is set.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-24 16:34:11 +00:00
Mark Brown f4244c68ff Merge remote-tracking branch 'regulator/topic/tol' into regulator-next 2012-12-10 12:43:22 +09:00
Mark Brown 4247bfe20a Merge remote-tracking branch 'regulator/topic/stub' into regulator-next 2012-12-10 12:43:20 +09:00
Mark Brown adca48f7c6 Merge remote-tracking branch 'regulator/topic/min' into regulator-next 2012-12-10 12:43:00 +09:00
Mark Brown f675649e70 Merge remote-tracking branch 'regulator/topic/max8973' into regulator-next 2012-12-10 12:42:59 +09:00
Mark Brown 1f9cc5f771 Merge remote-tracking branch 'regulator/topic/hotplug' into regulator-next 2012-12-10 12:42:55 +09:00
Marek Szyprowski d1e7de3007 regulators: add regulator_can_change_voltage() function
Introduce a regulator_can_change_voltage() function for the subsytems or
drivers which might check if applying voltage change is possible and use
special workaround code when the driver is used with fixed regulators or
regulators with disabled ability to change the voltage.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-06 15:13:34 +09:00
Mark Brown 5979b2a35f Merge branches 'topic/da9055' and 'topic/tps51632' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-min 2012-11-27 20:08:14 +00:00
Axel Lin 33234e791d regulator: core: Allow specific minimal selector for starting linear mapping
Some drivers (at least 3 drivers) have such variant of linear mapping that
the first few selectors are invalid and the reset are linear mapping.
Let's support this case in core.

This patch adds linear_min_sel in struct regulator_desc,
so we can allow specific minimal selector for starting linear mapping.
Then extends regulator_[map|list]_voltage_linear() to support this feature.

Note that for selectors less than min_linear_index, we need count them to
n_voltages so regulator_list_voltage() won't fail while checking the boundary
for selector before calling list_voltage callback.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-27 20:07:40 +00:00
Philip Rakity 1a8f85d402 regulator: add missing prototype for regulator_is_supported_voltage
avoids needs for CONFIG_REGULATOR in sdhci.c

Signed-off-by: Philip Rakity <prakity@nvidia.com>
Reviewed-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-21 19:03:12 +09:00
Mark Brown f86221d2b9 Merge branches 'topic/tps51632', 'topic/tps80031', 'topic/vexpress', 'topic/max8925', 'topic/gpio' and 'topic/tps65090' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-hotplug 2012-11-20 10:30:22 +09:00
Laxman Dewangan 5928f53896 regulator: max8973: add regulator driver support
The MAXIM MAX8973 high-efficiency, three phase, DC-DC step-down
switching regulator delievers up to 9A of output current. Each
phase operates at a 2MHz fixed frequency with a 120 deg shift
from the adjacent phase, allowing the use of small magnetic
component.

Add regulator driver for this device.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-19 17:03:11 +09:00
Mark Brown fe1e43f719 regulator: core: Add regulator_is_supported_voltage_tol()
If consumers wish to set voltages based on a tolerance it stands to reason
that they will also want to query for support in the same manner.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2012-11-14 19:41:14 +09:00
Laxman Dewangan 24282a1ca3 regulator: tps65090: Register all regulators in single probe call
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>
2012-10-17 22:21:14 +09:00
Pawel Moll bd7a2b600a regulator: core: Support for continuous voltage range
Some regulators can set any voltage within the constraints range,
not being limited to specified operating points.

This patch makes it possible to describe such regulator and makes
the regulator_is_supported_voltage() function behave correctly.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15 11:56:08 +09:00
Laxman Dewangan 0c57067430 regulator: tps51632: Add tps51632 regulator driver
The TPS51632 is a driverless step down controller with
serial control. Advanced features such as D-Cap+
architecture with overlapping pulse support and OSR
overshoot reduction provide fast transient response,
lowest output capacitance and high efficiency.
The TPS51632 supports both I2C and DVFS interfaces
(through PWM) for dynamic control of the output voltage
and current monitor telemetry.
Add regulator driver for TPS51632.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15 11:54:42 +09:00
Mark Brown 6a2027abd2 Merge remote-tracking branches 'regulator/topic/core', 'regulator/topic/bypass', 'regulator/topic/tol', 'regulator/topic/drivers' and 'regulator/topic/tps6586x' into regulator-next 2012-09-28 14:45:07 +01:00
Mark Brown df36793115 regulator: core: Provide regmap get/set bypass operations
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-10 11:25:10 +08:00