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>
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>
'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>
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>
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>
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>
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>
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
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>
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>
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>
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>
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>
Thierry Reding
Jon Hunter
Wolfram Sang
Mark Brown
Sachin Kamat
Sachin Kamat
Vince Hsu
Andrew Bresticker
Axel Lin
Laxman Dewangan