Commit Graph

1087 Commits

Author SHA1 Message Date
Axel Lin fca53d862d regulator: twl: Set enable enable_time in regulator_desc
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-04 12:38:37 +01:00
Axel Lin 4b7c948f55 regulator: gpio-regulator: Use core GPIO enable support
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-04 12:38:36 +01:00
Axel Lin a2a8222be8 regulator: gpio-regulator: Set enable enable_time in regulator_desc
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-04 12:38:35 +01:00
Axel Lin 94f48ab32b regulator: tps65910: Set enable enable_time in regulator_desc
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-04 12:37:54 +01:00
Mark Brown a9905b1d6f regulator: arizona-ldo1: Implement GPIO enable support
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:30 +01:00
Mark Brown 495fd8c8fd regulator: wm8994: Use core GPIO enable support
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:29 +01:00
Mark Brown 25a53dfbfb regulator: fixed: Use core GPIO enable support
This is essentially the code that was factored out into the core when the
feature was implemented.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:28 +01:00
Mark Brown 65f735082d regulator: core: Add core support for GPIO controlled enable lines
It is very common for regulators to support having their enable signal
controlled by a GPIO. Since there are a bunch of fiddly things to get
right like handling the operations when the enable signal is tied to
a rail and it's just replicated code add support for this to the core.

Drivers should set ena_gpio in their config if they have a GPIO control,
using ena_gpio_flags to specify any flags (including GPIOF_OUT_INIT_ for
the initial state) and ena_gpio_invert if the GPIO is active low. The
core will then override any enable and disable operations the driver has
and instead control the specified GPIO.

This will in the future also allow us to further extend the core by
identifying when several enable signals have been tied together and
handling this properly.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:27 +01:00
Mark Brown 5c5659d0a2 regulator: core: Factor out enable and disable operations some more
Create new _regulator_do_enable() and _regulator_do_disable() operations
which deal with the mechanics of performing the enable and disable, partly
to cut down on the levels of indentation and partly to support some future
work.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:26 +01:00
Mark Brown eefaa3c628 regulator: wm831x-ldo: Specify enable time for alive LDO
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:25 +01:00
Mark Brown 00581b30ae regulator: wm8994: Set enable_time in descriptor
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:29:24 +01:00
Mark Brown 3d0f267fcd regulator: fixed: Set enable enable_time in regulator_desc
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:28:41 +01:00
Mark Brown 79511ed322 regulator: core: Allow fixed enable_time to be set in the regulator_desc
Many regulators have a fixed specification for their enable time. Allow
this to be set in the regulator_desc as a number to save them having to
implement an explicit operation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:28:33 +01:00
Mark Brown e113d792d5 regulator: core: Check that the selector from map_voltage() is valid
Lots of regulator drivers have checks in their map_voltage() functions
to verify that the result of the mapping is in the range originally
specified. Factor these out in the core and provide a bit of extra
defensiveness for other drivers by doing the check in the core.

Since we're now doing a list_voltage() earlier move the current mapping
back to a voltage out into the set_voltage() call to save redoing it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:28:04 +01:00
Mark Brown c5f3939b8f regulator: core: Support fixed voltages in regulator_is_supported_voltage()
Currently regulator_is_supported_voltage() works by enumerating the set
of voltages which can be set by the regulator but the checks we're doing
to impose constraints mean that if we can't vary the voltage we'll not
report any voltages as supported even though the regulator is actually
set at that voltage.

We could fix the voltage listing but this would mean that list_voltage()
could end up going to the hardware to get the current voltage which isn't
expected (it's supposed to be very cheap) so instead special case things
when we can't change the voltage and compare the requested range against
the current voltage.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:27:58 +01:00
Stephen Boyd d92d95b6bf regulator: Fix recursive mutex lockdep warning
A recursive lockdep warning occurs if you call
regulator_set_optimum_mode() on a regulator with a supply because
there is no nesting annotation for the rdev->mutex. To avoid this
warning, get the supply's load before locking the regulator's
mutex to avoid grabbing the same class of lock twice.

=============================================
[ INFO: possible recursive locking detected ]
3.4.0 #3257 Tainted: G        W
---------------------------------------------
swapper/0/1 is trying to acquire lock:
 (&rdev->mutex){+.+.+.}, at: [<c036e9e0>] regulator_get_voltage+0x18/0x38

but task is already holding lock:
 (&rdev->mutex){+.+.+.}, at: [<c036ef38>] regulator_set_optimum_mode+0x24/0x224

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&rdev->mutex);
  lock(&rdev->mutex);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

3 locks held by swapper/0/1:
 #0:  (&__lockdep_no_validate__){......}, at: [<c03dbb48>] __driver_attach+0x40/0x8c
 #1:  (&__lockdep_no_validate__){......}, at: [<c03dbb58>] __driver_attach+0x50/0x8c
 #2:  (&rdev->mutex){+.+.+.}, at: [<c036ef38>] regulator_set_optimum_mode+0x24/0x224

stack backtrace:
[<c001521c>] (unwind_backtrace+0x0/0x12c) from [<c00cc4d4>] (validate_chain+0x760/0x1080)
[<c00cc4d4>] (validate_chain+0x760/0x1080) from [<c00cd744>] (__lock_acquire+0x950/0xa10)
[<c00cd744>] (__lock_acquire+0x950/0xa10) from [<c00cd990>] (lock_acquire+0x18c/0x1e8)
[<c00cd990>] (lock_acquire+0x18c/0x1e8) from [<c080c248>] (mutex_lock_nested+0x68/0x3c4)
[<c080c248>] (mutex_lock_nested+0x68/0x3c4) from [<c036e9e0>] (regulator_get_voltage+0x18/0x38)
[<c036e9e0>] (regulator_get_voltage+0x18/0x38) from [<c036efb8>] (regulator_set_optimum_mode+0xa4/0x224)
...

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:25:58 +01:00
Laxman Dewangan 5260cd2bc9 regulator: dt: regulator match by regulator-compatible
Match the device's regulators with the property of
"regulator-compatible" of each regulator node.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:19:41 +01:00
Axel Lin 844e6901df regulator: tps65217: Fix voltage boundary checking in tps65217_pmic_map_voltage
It is ok to request voltage with min_uV < tps->info[rid]->min_uV and
max_uV > tps->info[rid]->max_uV.

The equation we used in uv_to_vsel() does not allow
min_uV < tps->info[rid]->min_uV, otherwise it returns negative selector.
So we need to set min_uV = tps->info[rid]->min_uV if
min_uV < tps->info[rid]->min_uV.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:18:34 +01:00
Axel Lin 0072f0a82c regulator: tps62360: Convert to regulator_set_voltage_time_sel()
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-02 18:27:10 +01:00
Alan Cox 1a5d39d064 regulator: tps65217: invalid if check
This permits the setting of bogus values because the invalidity check is
itself invalid.

Reported-by: dcb314@hotmail.com
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-02 18:26:04 +01:00
Axel Lin 1e12dfc968 regulator: tps6524x: Convert fixed ilimsel to table based
This patch refactors the code to get rid of the fixed_ilimsel and FIXED_ILIMSEL
flag usage, and convert all the fixed ilimsel to table based (with one entry in
the table).

We can differentiate fixed ilimsel by checking info->n_ilimsels == 1,
thus FIXED_ILIMSEL flag can be removed.

This change makes the logic of the code simpler as all the ilimsels are table
based now.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-02 18:26:03 +01:00
Axel Lin cac87fd34e regulator: tps6524x: Convert to regulator_list_voltage_table()
This patch adds fixed_5000000_voltage table for fixed voltage,
so we can convert regulator_ops to regulator_list_voltage_table.

We can differentiate fixed voltage by checking rdev->desc->n_voltages == 1,
thus remove the FIXED_VOLTAGE flag usage.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-02 18:26:02 +01:00
Mark Brown 744c62eb65 Linux 3.5-rc5
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Merge tag 'v3.5-rc5' into regulator-drivers

Linux 3.5-rc5 collides with further development.

Conflicts:
	drivers/regulator/tps65023-regulator.c
2012-07-02 18:24:59 +01:00
Stephen Warren f141822b15 regulator: fixed: support deferred probe for DT GPIOs
of_get_named_gpio() needs the driver hosting the GPIO that the DT
property references to have been probed. Detect this specific failure,
and defer the probe of the whole regulator until this API can complete.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-01 19:12:59 +01:00
Axel Lin d172f319c1 regulator: tps65217: Convert LDO1 to use regulator_list_voltage_table
Convert tps65217_pmic_ldo1_ops to use regulator_list_voltage_table.

We have n_voltages and volt_table settings in regulator_desc,
so we don't need the table and table_len fields in struct tps_info.
Thus remove them from struct tps_info.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-01 19:12:58 +01:00
Fabio Estevam bf2516cd02 regulator: core: Remove unused get_device_regulator
commit 222cc7b1 (regulator: core: Allow multiple requests of a single supply mapping)
removed the usage of get_device_regulator().

Remove the function definition too amd get rid of the following warning:

drivers/regulator/core.c:112:26: warning: 'get_device_regulator' defined but not used [-Wunused-function]

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-27 15:04:03 +01:00
Mark Brown 222cc7b1ce regulator: core: Allow multiple requests of a single supply mapping
Sometimes it may be useful to allow a device to request a supply multiple
times, for example in order to allow framework management of some uses of
the supply with some additional driver specific management or in order to
allow multiple children of an MFD to work with the supply. Currently this
is not possible due to the creation of

Solve this by removing the requested_uA entry (we have no current users
of this feature anyway) and ignoring errors creating the symlink to the
consumer. We should do something nicer than this as this causes sysfs to
spew enormous warnings but it allows users to run for now.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2012-06-26 11:53:47 +01:00
Mark Brown 5aff3a8b20 regulator: core: Check for failed voltage sets before checking for delay
There is no need to consider waiting for the voltage to ramp if we
didn't manage to set it and looking at the return value is going to be
cheaper than is_enabled().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-26 11:53:35 +01:00
Axel Lin e2eb169b1b regulator: s5m8767: Convert to regulator_list_voltage_linear
In current code, .list_voltage and .set_voltage_sel callbacks for BUCK7 and
BUCK8 return -EINVAL.

This patch adds s5m8767_buck78_ops for BUCK7 and BUCK8 which does not set
.list_voltage, .get_voltage_sel and .set_voltage_sel. ( This has the same
effect of returning -EINVAL in the callbacks)

Then for all the users of s5m8767_list_voltage, we don't need to worry about
the case reg_voltage_map[reg_id] is NULL.
So we can convert s5m8767_list_voltage to regulator_list_voltage_linear.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-26 11:50:33 +01:00
Axel Lin 7f217d36dc regulator: arizona-micsupp: Fix choosing selector in arizona_micsupp_map_voltage
If min_uV is in the range of: 3250001~3269999,
current code uses the equation:
        selector = DIV_ROUND_UP(min_uV - 1700000, 50000);
Then selector will be 32.
Then arizona_micsupp_list_voltage returns -EINVAL for this case which is wrong.

This patch fixes this issue:
If min_uV > 3200000, selector should be ARIZONA_MICSUPP_MAX_SELECTOR.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-26 11:48:05 +01:00
Mark Brown 1910efa1d0 regulator: Add driver for Arizona LDO1
Arizona class devices feature an integrated LDO which is intended to
supply the digital core for the device. Provide a driver offering
minimal control of this regulator.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-25 10:32:51 +01:00
Sangbeom Kim 1af142c6f9 regulator: Modify ramp_delay value for s5m8767a
As s5m8767a is revisioned, ramp_delay register is changed.
5mV/uS, 10mV/uS, 25mV/uS, 50mV/uS, 100mV/uS ramp delay can be selected.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-25 10:12:30 +01:00
Mark Brown 85e63343f4 Linux 3.5-rc4
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Merge tag 'v3.5-rc4' into regulator-drivers

Linux 3.5-rc4 contains patches which conflict with some of the
development work.
2012-06-25 10:11:40 +01:00
Axel Lin 2f6ae6ef63 regulator: rc5t583: Use regulator_set_voltage_time_sel()
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-24 12:13:38 +01:00
Axel Lin f11d08c3d6 regulator: Use list_voltage() to get voltage in regulator_set_voltage_time_sel
With this change, regulator_set_voltage_time_sel() can be more generic and not
limited to linear and table based mapping now.
One side-effect of this change is that list_voltage() must be implemented.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-23 12:28:12 +01:00
Axel Lin baae019efe regulator: max8998: Convert to set_voltage_sel and regulator_map_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-23 12:18:08 +01:00
Axel Lin 9a0fbb627c regulator: max8998: Convert to regulator_list_voltage_linear()
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-23 12:16:42 +01:00
Axel Lin b515241522 regulator: tps62360: Remove chip_id and voltage_base from struct tps62360_chip
The chip_id is not used.
The voltage_base is not necessary, set base voltage to tps->desc.min_uV instead.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-23 12:16:42 +01:00
Graeme Gregory a68de07461 regulator: palmas: fix regmap offsets for enable/disable
I forgot to apply the offsets for the regmap helper functions for
enable/disable on SMPS10 and the LDO regulators. This means regulators
will not enable/disable correctly.

Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Tested-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-23 11:37:28 +01:00
Mark Brown b19dbf711e regulator: core: Add export of regulator_set_voltage_time_sel()
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-23 11:34:20 +01:00
Axel Lin d9fe28f962 regulator: tps65910: Convert to regulator_list_voltage_table
Convert tps65910_ops and tps65910_ops_vdd3 to regulator_list_voltage_table.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-22 10:13:31 +01:00
Axel Lin f6442aa0b5 regulator: tps65910: Remove unused min_uV and max_uV from struct tps_info
The min_uV and max_uV fields of struct tps_info are not used in the code.
For the case voltage_table is provided, the min_uV and max_uV are the same
values as volt_table[0] and volt_table[n_voltages -1].
For the case voltage_table is not available, having the min_uV and max_uV seems
misleading. Current code uses equations to get the voltage value in this case,
but these equations do not use the min_uV and max_uV fields of struct tps_info.

Thus this patch removes the min_uV and max_uV fields from struct tps_info.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-22 10:13:22 +01:00
Kim, Milo b222a817b4 regulator: change message level on probing lp872x driver
Use err log rather than warning message when the platform data is NULL

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-21 11:04:06 +01:00
Mark Brown dc2060cfe2 regulator: lp872x: Depend on I2C=y
Kconfig doesn't do the right thing for us here.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-21 10:38:37 +01:00
Axel Lin 01bc3a1400 regulator: tps65910: Convert to regulator_set_voltage_time_sel()
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-21 10:35:10 +01:00
Mark Brown b667a45d9f regulator: arizona: Add support for microphone supplies on Arizona devices
The Wolfson Arizona platform is used for a range of low power audio hub
CODECs. Many of these devices feature an integrated power supply for the
microphone which is supported by this driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20 11:46:19 +01:00
Axel Lin 8386a00f14 regulator: tps6524x: Fix get_voltage_sel for fixed voltage
get_voltage_sel() should return selector rather than voltage.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20 11:20:24 +01:00
Axel Lin baf73e2c4e regulator: lp872x: Return -EINVAL if pdata is NULL
Return -EINVAL if pdata is NULL, otherwise we have NULL dereference bug.
This patch also moves the code checking pdata earlier in lp872x_probe.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20 11:18:38 +01:00
Yadwinder Singh Brar f503071b03 regulator: max77686: Implement .set_ramp_delay() callback
This patch implements the .set_ramp_delay callback to set the ramp_delay on
hardware for BUCK2/3/4 if ramp_delay is set in regulator constraints.

This patch also do some cleaning work for unrequired members of
struct max77686_data.

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20 11:15:13 +01:00
Axel Lin c59d2a6b20 regulator: max77686: Initialize regulator_config
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20 11:13:55 +01:00
Mark Brown 809d310c7e regulator: lp872x: Don't allow modular build
Fixes link failure due to devm_gpio_request_one()

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-20 11:08:43 +01:00
Guennadi Liakhovetski 15719ccc27 regulator: extend the fixed dummy voltage regulator to accept voltage
Trivially extend the regulator_register_always_on() helper function to be
even more useful by adding a voltage parameter to it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 23:22:30 +01:00
Guennadi Liakhovetski dfad84aeab regulator: support multiple dummy fixed regulators
Currently regulator_register_fixed() uses a constant name to register a
fixed dummy regulator. This is sufficient in principle, since there is no
reason to register multiple such regulators. The user can simply supply all
consumers in one array and use it to initialise such a regulator. However,
in some cases it can be convenient to register multiple such regulators.
This is also a prerequisite for the upcoming patch, that will add a voltage
parameter to this function. The original function is provided as a wrapper
macro.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 23:22:30 +01:00
Kim, Milo af8b5fc310 regulator: add new regulator driver for lp872x
This driver supports TI/National LP8720, LP8725 PMIC.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Reviewed-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 23:14:29 +01:00
Axel Lin e90a84473e regulator: tps65023: Convert tps65023_ldo_ops to regulator_[get|set]_voltage_sel_regmap
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 12:14:11 +01:00
Sangbeom Kim c848bc8538 regulator: s5m8767a: Support AP watchdog reset operation
The S5M8767A can't know status of ap reset.
So, After AP watchdog reset, AP can't boot normally.

Problem can be happened like below condition.
- AP Bootable lowest voltage(vdd_arm): 0.9v
- AP DVFS voltage table: 0.8v, 0.9v, 1.0v
- During AP works on lowest voltage(0.8V), watchdog reset is asserted
- AP can't boot, because vdd arm is still 0.8v

Solution
- Basic concept:
  After ap watchdog reset, GPIO configuration is changed by default value
- S5M8767A has function of voltage control with gpio (8 levels with 3 gpios)
- Set bootable voltage on level 0 -> can work with default gpio configuration
- In the probing, Change voltage control level from level 0 to level 1
- Execute normal dvfs operation on level 1
- After watchdog reset, ap gpio is set by default value
- PMIC operation mode is changed by ap reset (level1 -> level0)
- Regardless of previous vdd_arm voltage, AP always can be booted.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 12:06:32 +01:00
Yadwinder Singh Brar 852abad238 regulator: max77686: Convert driver to use regulator_set_voltage_time_sel.
This patch converts the driver to use regulator_set_voltage_time_sel() as
.set_voltage_time_sel() callback. It also sets ramp_delay as 100000 uV/us for
LDOs & normal BUCKs and 27500 uV/us(default/reset value) for BUCKs[2/3/4] in
regulator_desc[].

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 12:06:32 +01:00
Axel Lin a133829e66 regulator: tps65023: Convert to get_voltage_sel
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 12:06:26 +01:00
Axel Lin ba3bd8a301 regulator: tps65023: Convert to regulator_list_voltage_table
In current mapping table settings, min_uV/max_uV are always
equal to volt_table[0] and volt_table[table_len -1].
Thus remove min_uV and max_uV from struct tps_info.

The table based mapping with table_len == 1 means fixed voltage.
So we don't need fixed flag to differentiate if it is fixed or not.

This patch adds DCDC_FIXED_3300000_VSEL_table and DCDC_FIXED_1800000_VSEL_table
for fixed voltage cases. So we can convert tps65023_dcdc_ops to
regulator_list_voltage_table. This makes the code simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 12:06:26 +01:00
Axel Lin 2c19ad43d1 regulator: mc13xxx: Remove mc13xxx_sw_regulator_is_enabled function
If .is_enabled callback is not implemented, regulator core assumes that the
regulator is always on. Thus we don't need mc13xxx_sw_regulator_is_enabled
function.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-19 12:06:25 +01:00
Mark Brown 0e8e5c34cf regulator: twl: Remove references to 32kHz clock from DT bindings
Due to the lack of a generic clock API we'd had the 32kHz clock in the
regulator driver but this is definitely a Linux-specific thing and now
we have a clock API hopefully the code can be moved elsewhere. Try to
avoid getting DTs deployed relying on the 32kHz clock by removing it
from the bindings, grep seems to tell me it's not currently used anyway.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-18 13:40:14 +01:00
Mark Brown 230a5a1c41 regulator: Fix double free in devm_regulator_put()
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-18 13:39:42 +01:00
Mark Brown 74ea0e5992 regulator: tps65910: Don't use 0 as NULL
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-18 11:12:21 +01:00
Axel Lin ea38d13fd1 regulator: core: Change the unit of ramp_delay from mV/uS to uV/uS
This change makes it possible to set ramp_delay with 0.xxx mV/uS without
truncation issue.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-18 10:56:58 +01:00
Axel Lin 398715ab94 regulator: core: Support table based mapping in regulator_set_voltage_time_sel
For table based mapping, we can calculate voltage difference by below equation:
abs(rdev->desc->volt_table[new_selector] - rdev->desc->volt_table[old_selector])

Thus we can make regulator_set_voltage_time_sel work for table based mapping.

regulator_set_voltage_time_sel() only supports linear or table based mapping.
In case it is misused, also warn if neither linear nor table based mapping
is used with regulator_set_voltage_time_sel().

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-18 10:56:51 +01:00
Axel Lin 086ccd4379 regulator: Fix setting constraints->ramp_delay in of_get_regulation_constraints
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-18 10:46:57 +01:00
Yadwinder Singh Brar 6f0b2c696c regulator: Add ramp_delay configuration to constraints
For some hardwares ramp_delay for BUCKs is a configurable parameter which can
be configured through DT or board file.This patch adds ramp_delay to regulator
constraints and allow user to configure it for regulators which supports this
feature, through DT or board file. It will provide two ways of setting the
ramp_delay for a regulator:
	First, by setting it as constraints in board file(for configurable
regulators) and set_machine_constraints() will take care of setting it on
hardware by calling(the provided) .set_ramp_delay() operation(callback).
	Second, by setting it as data in regulator_desc(as fixed/default
ramp_delay rate) for a regulator in driver.

regulator_set_voltage_time_sel() will give preference to
constraints->ramp_delay while reading ramp_delay rate for regulator. Similarly
users should also take care accordingly while refering ramp_delay rate(in case
of implementing their private .set_voltage_time_sel() callbacks for different
regulators).

[Rewrote subject for 80 columns -- broonie]

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:08:52 +01:00
Axel Lin b5fb77e018 regulator: wm831x-dcdc: Convert wm831x_buckv_ops to set_voltage_sel and map_voltage
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:07:19 +01:00
Axel Lin d580cb5e78 regulator: wm831x-dcdc: Convert wm831x_buckp_ops to regulator_set_voltage_sel_regmap
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:07:19 +01:00
Axel Lin 0a4796896b regulator: wm831x-ldo: Convert to regulator_set_voltage_sel_regmap and map_voltage
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:07:19 +01:00
Axel Lin 1bd1955a1f regulator: ab3100: Convert fixed voltage to use regulator_list_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:05:28 +01:00
Axel Lin 368a788769 regulator: pcf50633: Convert to regulator_set_voltage_sel_regmap and map_voltage
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:05:28 +01:00
Axel Lin 07b9e329f9 regulator: ab8500: Remove min_uV and max_uV from struct ab8500_regulator_info
The min_uV and max_uV are not really used in the code and misleading because
the min_uV and max_uV settings does not match the value in the voltage table.

For example, we have
static const unsigned int ldo_vaux3_voltages[] = {
        1200000,
        1500000,
        1800000,
        2100000,
        2500000,
        2750000,
        2790000,
        2910000,
};

With below min_uV/max_uV settings for AB8500_LDO_AUX3.
.min_uV                 = 1100000,
.max_uV                 = 3300000,

The min_uV/max_uV for AB8500_LDO_AUX3 seems copy-paste from AB8500_LDO_AUX2
and is wrong.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:04:45 +01:00
Axel Lin 7142e2138b regulator: ab8500: Use regulator_list_voltage_linear for ab8500_regulator_fixed_ops
Also removes set_voltage_time_sel callback from ab8500_regulator_fixed_ops
because the voltage won't change. ( And ab8500_regulator_fixed_ops does not
implement get_voltage_sel so set_voltage_time_sel won't be called )

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:04:45 +01:00
Axel Lin 34e74f39fa regulator: mc13xxx: Convert to regulator_list_voltage_table
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:01:21 +01:00
Axel Lin ee5e6253ac regulator: mc13xxx: Fix voltage checking for mc13xxx_fixed_regulator_set_voltage
The voltage range checking should be to ensure mc13xxx_regulators[id].voltages[0]
falls with min_uV and max_uV.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:01:21 +01:00
Axel Lin e08ef739fe regulator: tps62360: Simplify tps62360_set_voltage_time_sel implementation
For linear mappings, we can use below equation to get the voltage difference
between new_selector and old_selector:

abs(new_selector - old_selector) * rdev->desc->uV_step

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 21:01:21 +01:00
Axel Lin c70ad9dcf0 regulator: wm831x-dcdc: Convert wm831x_buckp_ops to regulator_list_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 20:59:48 +01:00
Axel Lin 6b57c0155c regulator: tps65023: Fix mask for LDOs output voltage select control
According to the datasheet:
The LDO_CTRL registers are used to set the output voltage of LDO1 and LDO2.
LDO_CTRL[7] and LDO_CTRL[3] are reserved and should always be written to 0.

Thus the mask for TPS65023_LDO_1 and TPS65023_LDO_2 should be 0x07 and 0x70
respectively.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 20:56:54 +01:00
Axel Lin ec0ab07587 regulator: tps65023: Set n_voltages to 1 for fixed voltage
For fixed voltage, the n_voltages should be 1 rather than 0.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 20:56:01 +01:00
Axel Lin c705742201 regulator: wm8350: Reuse map_voltage() to get selector of a given uV
Reuse map_voltage() to get the selector of a given uV.

Then we can remove wm8350_ldo_mvolts_to_val() and wm8350_dcdc_mvolts_to_val().
Also remove unused wm8350_dcdc_val_to_mvolts() function.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 20:53:58 +01:00
Axel Lin a967fbfaca regulator: wm8350: Use wm8350_ldo_list_voltage instead of open code to verify selected voltage
Call wm8350_ldo_list_voltage() instead of open code to verify selected voltage
falls within specified range.
Use wm8350_ldo_list_voltage() here is less error prone.

wm8350_ldo_val_to_mvolts() is only used in wm8350_ldo_list_voltage now, so
remove it and move the implementation to wm8350_ldo_list_voltage().

This patch also include below small changes in wm8350_ldo_map_voltage:
1. wm8350_ldo_map_voltage() returns selector, thus rename variable mV to sel.
2. Use DIV_ROUND_UP macro to calculate selector.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 20:51:44 +01:00
Philip Rakity 8b96de31b0 regulator: core.c Only delay when setting voltage requires this
minor optimization: move delay code to where delay is set and
thus where it is used vs in the main line path.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Acked-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 20:50:26 +01:00
Philip Rakity 2f7baf89d3 regulator: core.c Pass voltage to notifier when setting voltage
The voltage being set should be passed to the call in handler
requesting the callback.  Currently this is not done.

The calling handler cannot call regulator_get_voltage() to get the
information since the mutex is held by the regulator and
deadlock occurs.

Without this change the receiver of the call in cannot know what
action to take.  This is used, for example, to set PAD voltages
when doing SD vccq voltage changes.

[Review and spelling fix in the commit log from Pankaj Jangra]

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 19:12:44 +01:00
Mark Brown d8493d210b regulator: core: Actually use the data in _notifier_call_chain()
Reported-by: Pankaj Jangra <jangra.pankaj9@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 18:46:37 +01:00
Lee Jones ea851f4f08 regulator: Change db8500-prcmu match names to reflect Device Tree
The 'name' field in 'struct of_regulator_match' expects to match with
its corresponding regulator device node in the Device Tree. This patch
renames each of the regulators in the db8500-prcum regulator driver so
this is true.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 18:27:49 +01:00
Lee Jones f7f3f1ad9e regulator: Change ab8500 match names to reflect Device Tree
The 'name' field in 'struct of_regulator_match' expects to match with
its corresponding regulator device node in the Device Tree. This patch
renames each of the regulators in the ab8500 regulator driver so this
is true.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 18:27:47 +01:00
Sangbeom Kim 9d88fc0b35 regulator: Fix the s5m8767a problem of the division by null
If ramp_delay is 0, delay value can be divided by zero.
This patch can fix the problem.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-17 18:27:20 +01:00
Axel Lin b4bc9ef625 regulator: tps65217: Convert to regulator_[is_enabled|get_voltage_sel]_regmap
This patch converts .is_enabled and .get_voltage_sel to
regulator_is_enabled_regmap and regulator_get_voltage_sel_regmap.

For .enable, .disable, and .set_voltage_sel, the write protect level is either
1 or 2. So we cannot use regulator_[enable|disable|set_voltage_sel]_regmap.

Now we store the enable reg/mask and vsel reg/mask in regulator_desc,
so we can remove enable_mask, set_vout_reg, and set_vout_mask from
struct tps_info.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 18:57:56 +01:00
Axel Lin 74e20e5691 regulator: wm8400: Adjust the equation for selector >= 15 in wm8400_ldo_list_voltage
Adjust the equation for selector >= 15 for better readability.
The equation "1700000 + ((selector - 15) * 100000)" can be interpreted by:
Starting from selector 15: Steps of 100mV from 1700mV

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 18:53:23 +01:00
Sangbeom Kim df2643cfa4 regulator: Replace set_voltage with set_voltage_sel
To apply delay time for voltage change,
replace s5m8767_set_voltage with s5m8767_set_voltage_sel.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 18:45:09 +01:00
Axel Lin 38c20eb23f regulator: wm8400: Use wm8400_ldo_list_voltage instead of open code to verify selected voltage
Call wm8400_ldo_list_voltage() instead of open code to verify selected voltage
falls within specified range.
Use wm8400_ldo_list_voltage() here is less error prone.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 10:47:02 +01:00
Sangbeom Kim 3fe3a182ad regulator: Remove s5m8767a buck initialization
As s5m8767a is revisioned, remove unnecessary buck 2,3,4 initialization routine.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 10:44:51 +01:00
Axel Lin 0ff472467a regulator: wm8350: Add missing min_uV and uV_step settings for DCDC4
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 17:34:45 +08:00
Axel Lin 578df8babf regulator: core: Return correct delay time in regulator_set_voltage_time_sel
rdev->desc->uV_step * abs(new_selector - old_selector) returns uV.
The unit of ramp_delay is mV/us.

Current code multiples 1000 at wrong place.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-11 13:35:56 +08:00
Axel Lin 23ca6bf231 regulator: max77686: Fix the delay time for set_voltage_time_sel
rdev->desc->uV_step * abs(new_selector - old_selector) returns uV.
The unit of ramp_rate is mV/us.
Thus 1000 should be multiplied.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Reviewed-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-11 12:09:14 +08:00
Yadwinder Singh Brar 98a175b60f regulator: core: Add regulator_set_voltage_time_sel to calculate ramp delay.
This patch adds regulator_set_voltage_time_sel(), to move into core, the
commonly used code by drivers to provide the .set_voltage_time_sel callback.
It will also allow us to configure different ramp delay for different
regulators easily.

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-11 12:01:46 +08:00
Axel Lin ab0d1cbe55 regulator: max77686: Check pdata->num_regulators earlier
If this driver only works when pdata->num_regulators == MAX77686_REGULATORS,
let's check it earlier.

Also remove unused num_regulators from struct max77686_data.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-11 12:01:42 +08:00
Axel Lin d01c3a1e1b regulator: anatop: Convert to set_voltage_sel and regulator_map_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-11 12:01:41 +08:00
Axel Lin ea7e330454 regulator: twl: Convert twl6030ldo_ops to use regulator_list_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-11 12:01:40 +08:00