Commit Graph

22 Commits

Author SHA1 Message Date
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00
Axel Lin 7dc6c766a7
regulator: as3722: Slightly improve readability
Add a local variable *desc to avoid too many change lines due to over 80
characters.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-04-01 15:19:22 +07:00
Axel Lin ce0a383db3
regulator: as3722: Convert to use regulator_set/get_current_limit_regmap
Use regulator_set/get_current_limit_regmap helpers to save some code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-04-01 15:19:01 +07:00
Axel Lin 4d92ac7bd9
regulator: as3722: Remove *rdevs[] from struct as3722_regulators
Current code is using devm_regulator_register() so it is not necessary
to save as3722_regs->rdevs[id] for clean up.
The *rdevs[] is not used now, remove it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-18 12:00:34 +00:00
Charles Keepax 46689b1e38
regulator: as3722: Correct minor typo
A comma has been accidentally used where a semi-colon was clearly
intended, correct this typo.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06 15:52:32 +00:00
Thierry Reding 162c5a368f regulator: as3722: Constify regulator ops
A const pointer to regulator ops is stored in regulator descriptors. The
operations never need to be modified, so define them as const as a hint
to the compiler that they can go into .rodata.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-11 15:15:36 +01:00
Jon Hunter 40a865500c regulator: as3722: Add bypass support for LDO6
LD06 on the AS3722 power management IC supports a bypass mode. Bypass
is enabled for the LDO by writing the value 0x3F to the voltage select
field in the control register for the LDO. Note that this is the same
register and field that is used to select the voltage as well for the
LDO.

Add support for bypass on LDO6 by specifying the various bypass
parameters for regulator and adding new function pointer tables for the
LDO. Note that the bypass OFF value is the same as the ON value simply
because there is no actual OFF value and bypass will be disabled when
a new voltage is written to the VSEL field.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-11 15:15:36 +01:00
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
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
Sachin Kamat a181c1c702 regulator: as3722: Fix incorrect parameter initialization
'name' field was re-initialized and getting overwritten in some
cases possibly due to a typo. Code inspection says the second time
it should be 'sname' instead of 'name'. Replace it.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-24 16:09:44 +01:00
Thierry Reding 2050afde19 regulator: as3722: Make 0 a valid selector
As of commit 064d5cd110 (regulator: core: Fix the init of DT defined
fixed regulators) the regulator core tries to query the current voltage
of a regulator when applying constraints. This exposes a bug in the
AS3722 regulator driver which fails to read the voltage of disabled
regulators. The reason is that the hardware is programmed to a selector
of 0, but none of the voltage tables include 0 as a valid selector. The
datasheets indicate that 0 is a valid selector when the regulators are
powered off.

To fix this, add a range including selector 0 to the voltage tables.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-03 16:51:19 +01:00
Sachin Kamat ba40e5571b regulator: as3722: Add missing of_node_put
Add of_node_put to decrement the ref count.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-18 10:59:02 +09:00
Mark Brown 849e1517a4 Merge remote-tracking branches 'regulator/fix/pfuze100', 'regulator/fix/s5m8767', 'regulator/topic/ab8500', 'regulator/topic/act8865', 'regulator/topic/anatop', 'regulator/topic/arizona' and 'regulator/topic/as3722' into regulator-linus 2014-01-23 12:01:24 +00:00
Vince Hsu fb04f1b0c0 regulator: as3722: set enable time for SD0/1/6
Add an enable time of 600us for SD0/1/6 to ensure that we have
enough setup time for the power rail.

Signed-off-by: Vince Hsu <vinceh@nvidia.com>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-06 18:09:39 +00:00
Andrew Bresticker 762a8ee808 regulator: as3722: detect SD0 low-voltage mode
SD0 may operate in low-voltage mode, with a minimum of 0.41V
and a maximum of 1.5V.  This is indicated by bit 4 of FUSE7.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Vince Hsu <vinceh@nvidia.com>
broonie.e6264@m.evernote.com
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-06 18:09:36 +00:00
Axel Lin bc2571f4ba regulator: as3722: Don't set min_uV/uV_step/linear_min_sel for linear_ranges
These settings are not used when using linear_ranges and it makes the code
looks confusing. Thus remove them.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-20 18:31:42 +00:00
Vince Hsu 6389075eff regulator: as3722: set the correct current limit
Simple fix to set the correct current limit for SD0/1/6.

Signed-off-by: Vince Hsu <vinceh@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Fixes: bc407334e9 (regulator: as3722: add regulator driver for AMS AS3722)
Cc: stable@vger.kernel.org
2013-12-02 18:02:34 +00:00
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
Axel Lin 5e96570480 regulator: as3722: Fix off-by-one n_voltages setting for SDx
AS3722_SDx_VSEL_MAX means the maximum selecter, the n_voltages should be
AS3722_SDx_VSEL_MAX + 1.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-03 16:49:34 +01:00
Axel Lin 43f6fc9542 regulator: as3722: Fix equation to calculate max_uV in regulator_lin_range macro
Fix off-by-one in the equation to calculate max_uV and also adjust the _min_uV
setting accordingly.

For LDOs:
The voltage select bits set the LDO output voltage 0.825V...3.3V, 25mV steps
  ....00h : LDO off
  01h-24h : V_LDO4 = 0.8V + ldo4_vsel * 25mV
                   = 0.825V + (ldo4_vsel - 1h) * 25mV
  25h-3Fh : do not use
  40h-7Fh : V_LDO4 = 1.725V + (ldo4_vsel - 40h) * 25mV

For SD2345:
The voltage select bits set the DC/DC output voltage level and power the DC/DC
converter down.
  ....00h : DC/DC powered down
  01h-40h : V_SD2 = 0.6V + sd2_vsel * 12.5mV
                  = 0.6125V + (sd2_vsel - 1h) * 12.5mV
  41h-70h : V_SD2 = 1.4V + (sd2_vsel - 40h) * 25mV
                  = 1.425V + (sd2_vsel - 41h) * 25mV
  71h-7Fh : V_SD2 = 2.6V + (sd2_vsel - 70h) * 50mV
                  = 2.65V + (sd2_vsel - 71h) * 50mV

Note, the third entry in as3722_sd2345_ranges is wrong in current code.
Fix it based on the datasheet.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-03 16:49:21 +01:00
Laxman Dewangan bc407334e9 regulator: as3722: add regulator driver for AMS AS3722
The AMS AS3722 is a compact system PMU suitable for mobile phones,
tablets etc. It has 4 DCDC step down regulators, 3 DCDC step down
controller, 11 LDOs.

Add a driver to support accessing the DCDC/LDOs found on the AMS
AS3722 PMIC using regulators.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Florian Lobmaier <florian.lobmaier@ams.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-20 18:08:00 +01:00