Commit Graph

251 Commits

Author SHA1 Message Date
Mark Brown
ad21edcdb2 Merge remote-tracking branches 'regulator/topic/tps65217', 'regulator/topic/tps65910' and 'regulator/topic/voltage-ev' into regulator-next 2014-09-30 13:50:31 +01:00
Mark Brown
64b285ad7b Merge remote-tracking branches 'regulator/topic/max1586', 'regulator/topic/max77802' and 'regulator/topic/of' into regulator-next 2014-09-30 13:50:29 +01:00
Mark Brown
a81bf3c4fc Merge remote-tracking branches 'regulator/topic/drivers', 'regulator/topic/enable', 'regulator/topic/fan53555', 'regulator/topic/hi6421' and 'regulator/topic/isl9305' into regulator-next 2014-09-30 13:50:27 +01:00
Mark Brown
95528a55db Merge remote-tracking branches 'regulator/topic/as3711', 'regulator/topic/axp20x', 'regulator/topic/bcm590xx' and 'regulator/topic/da9211' into regulator-next 2014-09-30 13:50:25 +01:00
Mark Brown
3f7c696375 Merge branch 'topic/of' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-isl9305 2014-09-10 12:03:23 +01:00
Mark Brown
a0c7b164ad regulator: of: Provide simplified DT parsing method
Currently regulator drivers which support DT all repeat very similar code
to supply a list of known regulator identifiers to be matched with DT,
convert that to platform data which is then matched up with the regulators
as they are registered. This is both fiddly to get right and for devices
which can use the standard helpers to provide their operations is the main
source of code in the driver.

Since this code is essentially identical for most drivers we can factor it
out into the core, moving the identifiers in the match table into the
regulator descriptors and also allowing drivers to pass in the name of the
subnode to search. When a driver provides an of_match string for the
regulator the core will attempt to use that to obtain init_data, allowing
the driver to remove all explicit code for DT parsing and simply provide
data instead.

The current code leaks the phandles for the child nodes, this will be
addressed incrementally and makes no practical difference for FDT anyway
as the DT data structures are never freed.

Signed-off-by: Mark Brown <broonie@linaro.org>
2014-09-10 12:00:53 +01:00
Robert Jarzmik
4e00517945 regulator: max1586: add device-tree support
Add device-tree support to max1586.
The driver can still be used with the legacy platform data, or the new
device-tree way.

This work is heavily inspired by the device-tree support of its cousin
max8660 driver.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01 11:35:45 +01:00
Heiko Stübner
7179569aeb regulator: core: Add REGULATOR_EVENT_PRE_VOLTAGE_CHANGE (and ABORT)
In some cases we need to know when a regulator is about to be changed.
Add a way for clients to be notified.  Note that for set_voltage() we
don't necessarily know what voltage we'll end up with, so we tell the
client what the range will be so they can prepare.

Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie+linaro@kernel.org>
2014-08-29 11:58:31 +01:00
Randy Dunlap
a8dbfeedfe regulator: fix kernel-doc warnings in header files
Fix kernel-doc warnings in regulator header files:

Warning(..//include/linux/regulator/machine.h:140): No description found for parameter 'ramp_disable'
Warning(..//include/linux/regulator/driver.h:279): No description found for parameter 'linear_ranges'
Warning(..//include/linux/regulator/driver.h:279): No description found for parameter 'n_linear_ranges'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-28 09:59:42 +01:00
James Ban
bf3baca6c5 regulator: da9211: support device tree
This is a patch for supporting device tree of DA9211/DA9213.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-27 10:27:56 +01:00
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