Commit Graph

25 Commits

Author SHA1 Message Date
Chen-Yu Tsai
2ca342d391 regulator: axp20x: Support AXP806 variant
The X-Powers AXP806 PMIC has a new set of buck and LDO regulators, and
also a switch. The buck regulators support teaming into multi-phase
groups, with A+B, A+B+C, D+E groupings.

Some registers controlling DCDC converter work settings are at different
offsets. Deal with them as well.

Add support for this new variant.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-09-13 12:49:45 +01:00
Hans de Goede
636e2a39cf regulator: axp20x: Add support for the (external) drivebus regulator
The axp20x pmics have 2 power inputs, one called ACIN which is intended
for to be supplied via a powerbarrel on the board and one called VBUS
which is intended to be supplied via an otg connector.

In the VBUS case the pmic needs to know if the board is supplying power
to the otg connector, because then it should not take any power from
its VBUS pin. The axp209 pmic has a N_VBUSEN input pin via which the
board can signal to the pmic whether the board is supplying power to the
otg connector or not.

On the axp221/axp223 this pin can alternatively be used as an output
which controls an external regulator which (optionally) supplies
power to the otg connector from the board. When the pin is used as
output it is called DRIVEVBUS in the datasheet.

This commit adds support for the DRIVEVBUS pin as an extra pmic
controlled regulator. Since this is optional a new x-powers,drivebus dt
property is added. When this is present the misc-control register is
written to change the N_VBUSEN input pin to DRIVEVBUS output pin mode and
the extra drivebus regulator is registered with the regulator subsystem.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-06-06 18:38:30 +01:00
Chen-Yu Tsai
a51f9f4622 regulator: axp20x: support AXP809 variant
The X-Powers AXP809 PMIC has a similar set of regulators as the AXP221,
though a few LDOs were removed, and a new switch output added. Like the
AXP221, AXP809 also has DC1SW and DC5LDO, which are internally chained
to DCDC1 and DCDC5, respectively.

Add support for this new variant. Also remove the "axp22x_" prefix from
DC1SW/DC5LDO supply handling code, as the AXP809 uses it as well.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-31 18:37:07 +01:00
Hans de Goede
f40d4896bf regulator: axp20x: Fix axp22x ldo_io registration error on cold boot
The maximum supported voltage for ldo_io# is 3.3V, but on cold
boot the selector comes up at 0x1f, which maps to 3.8V.

This causes _regulator_get_voltage() to fail with -EINVAL which
causes regulator registration to fail when constrains are used:

[    1.467788] vcc-touchscreen: failed to get the current voltage(-22)
[    1.474209] axp20x-regulator axp20x-regulator: Failed to register ldo_io1
[    1.483363] axp20x-regulator: probe of axp20x-regulator failed with error -22

This commits makes the axp20x regulator driver accept the 0x1f register
value, fixing this.

The datasheet does not guarantee reliable operation above 3.3V, so on
boards where this regulator is used the regulator-max-microvolt setting
must be 3.3V or less.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-29 11:43:50 +01:00
Hans de Goede
a2262e5a12 regulator: axp20x: Fix axp22x ldo_io voltage ranges
The minium voltage of 1800mV is a copy and paste error from the axp20x
regulator info. The correct minimum voltage for the ldo_io regulators
on the axp22x is 700mV.

Fixes: 1b82b4e4f9 ("regulator: axp20x: Add support for AXP22X regulators")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 16:14:52 +01:00
Maxime Ripard
8d4d5c3a7c regulator: axp20x: Fix LDO4 linear voltage range
The current linear voltage range for the LDO4 regulator found in the APX20X
PMICs assumes that the voltage is linear between 2.5 and 3.1V.

However, the PMIC can output up to 3.3V on that regulator by skipping the
2.6V and 2.9V steps.

Fix the ranges to read and set the proper voltages.

Fixes: 13d57e6435 ("regulator: axp20x: Use linear voltage ranges for AXP20X LDO4")
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 15:57:45 +01:00
Linus Torvalds
12e7b0a627 - New Drivers
- Freescale Touch Screen ADC
    - X-Powers AXP PMIC with RSB
    - TI TPS65086 Power Management IC (PMIC)
  - New Device Support
    - Supply device PCI IDs for Intel Broxton
  - Fix-ups
    - Move to clkdev_create() API; intel_quark_i2c_gpio
    - Complete re-write of TI's TPS65912 Power Management IC (PMIC)
    - Remove unnecessary function argument; axp20x
    - Separate out bus related code; axp20x
    - Coding Style changes; axp20x
    - Allow more drivers to be compiled as modules
    - Work around false positive 'used uninitialised' warning; db8500-prcmu
  - Bug Fixes
    - Remove do_div(); fsl-imx25-gcq
    - Fix driver init when built-in; tps65010
    - Fix clock-unregister leak; intel-lpss
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Merge tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Freescale Touch Screen ADC
   - X-Powers AXP PMIC with RSB
   - TI TPS65086 Power Management IC (PMIC)

  New Device Support:
   - Supply device PCI IDs for Intel Broxton

  Fix-ups:
   - Move to clkdev_create() API; intel_quark_i2c_gpio
   - Complete re-write of TI's TPS65912 Power Management IC (PMIC)
   - Remove unnecessary function argument; axp20x
   - Separate out bus related code; axp20x
   - Coding Style changes; axp20x
   - Allow more drivers to be compiled as modules
   - Work around false positive 'used uninitialised' warning; db8500-prcmu

  Bug Fixes:
   - Remove do_div(); fsl-imx25-gcq
   - Fix driver init when built-in; tps65010
   - Fix clock-unregister leak; intel-lpss"

* tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (53 commits)
  mfd: intel-lpss: Pass I2C configuration via properties on BXT
  mfd: imx6sx: Add PCIe register definitions for iomuxc gpr
  mfd: ipaq-micro: Use __maybe_unused to hide pm functions
  mfd: max77686: Add max77802 to I2C device ID table
  mfd: max77686: Export OF module alias information
  mfd: max77686: Allow driver to be built as a module
  mfd: stmpe: Add the proper PWM resources
  mfd: tps65090: Set regmap config reg counts properly
  mfd: syscon: Return ENOTSUPP instead of ENOSYS when disabled
  mfd: as3711: Set regmap config reg counts properly
  mfd: rc5t583: Set regmap config reg counts properly
  gpio: tps65086: Add GPO driver for the TPS65086 PMIC
  mfd: mt6397: Add platform device ID table
  mfd: da9063: Fix missing volatile registers in the core regmap_range volatile lists
  mfd: mt6397: Add MT6323 support to MT6397 driver
  mfd: mt6397: Add support for different Slave types
  mfd: mt6397: int_con and int_status may vary in location
  dt-bindings: mfd: Add bindings for the MediaTek MT6323 PMIC
  mfd: da9062: Fix missing volatile registers in the core regmap_range volatile lists
  mfd: Add documentation for ACT8945A DT bindings
  ...
2016-03-18 10:15:11 -07:00
Chen-Yu Tsai
e0bbb38c2f regulator: axp20x: Use of_match name as default regulator name
Originally the helper macros used uppercase regulator names, which
are primarily used to expand to the regulator ID enum, as the default
names. This is aestheticly unpleasent.

Since the of_match bits are the same, just lowercase, use that as the
default names instead.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-15 20:02:43 +00:00
Chen-Yu Tsai
04e0981c67 regulator: axp20x: Support new AXP223 PMIC
The AXP223 is a new PMIC commonly paired with Allwinner A23/A33 SoCs.
It is functionally identical to AXP221; only the regulator default
voltage/status and the external host interface are different.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-02-12 08:55:34 +00:00
Chen-Yu Tsai
13d57e6435 regulator: axp20x: Use linear voltage ranges for AXP20X LDO4
AXP20X datasheet lists the possible voltage settings for LDO4, so
it was implemented using a voltage table. Upon closer examination,
the valid voltages can be mapped into 3 linear ranges.

Move AXP20X LDO4 to use linear ranges. The supporting code can be
reused with later AXP8xx PMICs, which have a number of regulators
that have 2 linear ranges.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-03 17:15:08 +00:00
Chen-Yu Tsai
94c39041ae regulator: axp20x: Remove voltage readout support for switch regulators
Switch-type regulators, such as DC1SW on AXP22X, are a secondary output
from DCDC1. They are just an on/off switch, and the driver should not
try to read its voltage directly from the DCDC1 control registers.

Instead, the core will pass down the voltage from the regulator supply
chain.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-03 17:15:08 +00:00
Chen-Yu Tsai
3cb99e2ea9 regulator: axp20x: Fix GPIO LDO enable value for AXP22x
The enable/disable values for GPIO LDOs are reversed. It seems no one
noticed as AXP22x support was introduced recently, and no one was using
the GPIO LDOs, either because no designs actually use them or board
support hasn't caught up.

Fixes: 1b82b4e4f9 ("regulator: axp20x: Add support for AXP22X regulators")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2015-12-23 00:05:31 +00:00
Mark Brown
6727479f07 Merge remote-tracking branches 'regulator/topic/act8865', 'regulator/topic/anatop', 'regulator/topic/arizona', 'regulator/topic/axp20x' and 'regulator/topic/bcm590xx' into regulator-next 2015-11-04 11:19:37 +00:00
Chen-Yu Tsai
7118f19c4c regulator: axp20x: set supply names for AXP22X DC1SW/DC5LDO internally
The DC1SW and DC5LDO regulators in the AXP22X are internally chained
to DCDC1 and DCDC5, hence the names. The original bindings used the
parent regulator names for the supply regulator property.

Since they are internally connected, the relationship should not be
represented in the device tree, but handled internally by the driver.

This patch has the driver remember the regulator names for the parent
DCDC1/DCDC5, and use them as supply names for DC1SW/DC5LDO.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-05 15:05:29 +01:00
Chen-Yu Tsai
6b3600b4ba regulator: axp20x: Fix enable bit indexes for DCDC4 and DCDC5
The enable bit indexes for DCDC4 and DCDC5 regulators are off by 1.

We haven't run into any problems with this since either the regulators
aren't defined in the DT and aren't used, or all the DCDC regulators
have the "always-on" property set, as they are almost always used
for system critical loads.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2015-09-29 17:07:27 +01:00
Ian Campbell
d4ea7d8645 regulator: axp20x: Add module alias
This allows the module to be autoloaded.

Together with 07949bf9c6 ("cpufreq: dt: allow driver to boot
automatically") this is sufficient to allow a modular kernel (such
as Debian's) to enable cpufreq on a Cubietruck.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-04 18:29:00 +01:00
Boris BREZILLON
1b82b4e4f9 regulator: axp20x: Add support for AXP22X regulators
Add AXP22X regulator definitions and variant id associations.
This introduces a new "switch" type output for one of the regulators.
It is a switchable secondary output of one regulator, with the same
voltage level as the primary output.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
[wens@csie.org: Moved variant choosing to multi family support patch]
[wens@csie.org: Add dc-dc work frequency range]
[wens@csie.org: Add "switch" type output regulator DC1SW]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-05-13 16:26:18 +01:00
Boris BREZILLON
866bd951f2 regulator: axp20x: Prepare support for multiple AXP chip families
Rework the AXP20X_ macros and probe function to support the several chip
families, so that each family can define it's own set of regulators.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
[wens@csie.org: Support different DC-DC work frequency ranges]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-05-13 16:26:04 +01:00
Chen-Yu Tsai
765e802325 regulator: axp20x: Migrate to regulator core's simplified DT parsing code
A common simplified DT parsing code for regulators was introduced in
commit a0c7b164ad ("regulator: of: Provide simplified DT parsing
method"). This is very similar to our own code, so get rid of ours
and use the common code.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-01-09 17:12:58 +00:00
Chen-Yu Tsai
880fe82dc5 regulator: axp20x: Fill regulators_node and of_match descriptor fields
This patch fills the DT related fields in the regulator descriptors,
which can then be used by the regulator core's simplified DT code.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-01-09 17:12:58 +00:00
Wolfram Sang
6c794b2654 regulator: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:21:29 +02:00
Maxime Ripard
0d90ecf31e regulator: axp20x: Use parent device as regulator configuration device
The current device used for the regulator configuration is the child device
created by the MFD driver. This means that it doesn't have any of_node pointing
to it, and whenever we register the regulators, it will not look into the
regulator supply in the DT, hence requiring to provide regulator aliases in the
MFD driver.

We can easily fix that by using the parent device in our configuration, which
has a DT node associated to it, and will allow a DT lookup. Eventually, we will
be able to remove the aliases in the MFD driver.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-22 18:18:59 -07:00
Axel Lin
b88703567b regulator: axp20x: Use regulator_map_voltage_ascend for LDO4
The voltages in axp20x_ldo4_data table are in ascendant order, so use
regulator_map_voltage_ascend.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-01 13:42:42 +01:00
Boris BREZILLON
a6016c523e regulator: AXP20x: fix wrong call to of_find_node_by_name
The of_find_node_by_name function will search for a DT node named
"regulators" after the provided np node, but will not ensure that this node
is a child of np.
This might result in retrieving a "regulators" node that is not related to
the axp20x PMIC.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-19 17:40:06 +01:00
Carlo Caione
dfe7a1b058 regulator: AXP20x: Add support for regulators subsystem
AXP202 and AXP209 come with two synchronous step-down DC-DCs and five
LDOs. This patch introduces basic support for those regulators.

Signed-off-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-14 17:00:34 +01:00