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da9063_ldo_lim_event() is only referenced in this driver, make it static.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
lp872x regulator driver can be built a module after commit 631a1fc
"regulator: build: Allow most regulators to be built as modules".
Make REGULATOR_LP872X depend on I2C to allow building lp872x module when I2C=m.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Below is the equation in original code:
tps65217_uv1_ranges:
0 ... 24: uV = vsel * 25000 + 900000;
25 ... 52: uV = (vsel - 24) * 50000 + 1500000;
= (vsel - 25) * 50000 + 1550000;
53 ... 55: uV = (vsel - 52) * 100000 + 2900000;
= (vsel - 53) * 100000 + 3000000;
56 ... 62: uV = 3300000;
tps65217_uv2_ranges:
0 ... 8: uV = vsel * 50000 + 1500000;
9 ... 13: uV = (vsel - 8) * 100000 + 1900000;
= (vsel - 9) * 100000 + 2000000;
14 ... 31: uV = (vsel - 13) * 50000 + 2400000;
= (vsel - 14) * 50000 + 2450000;
The voltage tables are composed of linear ranges.
This patch converts this driver to use multiple linear ranges APIs.
In original code, voltage range for DCDC1 is 900000 ~ 1800000 and voltage range
for DCDC3 is 900000 ~ 1500000. This patch separates the range 25~52 in
tps65217_uv1_ranges table to two linear ranges: 25~30 and 31~52.
This change makes it possible to reuse the same linear_ranges table for DCDCx.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
regulator_register() does not return NULL, it returns ERR_PTR on error.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
All the current limit tables have the values in ascend order.
So we can slightly optimize the for loop iteration because the first match
is the minimal value.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Add a resource managed regulator_get_exclusive()
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Mark Brown <broonie@linaro.org>
The driver adds support for the following DA9063 PMIC regulators:
- 11x LDOs (named LDO1 - LDO11),
- 6x buck converters (BCORE1, BCORE2, BPRO, BMEM, BIO, BPERI),
Regulators provide following operations:
- REGULATOR_CHANGE_STATUS and REGULATOR_CHANGE_VOLTAGE for all regulators,
- REGULATOR_CHANGE_MODE for LDOs and buck converters, where:
- LDOs allow REGULATOR_MODE_NORMAL and REGULATOR_MODE_STANDBY,
- buck converters allow REGULATOR_MODE_FAST, REGULATOR_MODE_NORMAL
and REGULATOR_MODE_STANDBY,
- REGULATOR_CHANGE_CURRENT for buck converters (current limits).
The driver generates REGULATOR_EVENT_OVER_CURRENT for LDO3, LDO4, LDO7, LDO8
and LDO11.
Internally, PMIC provides two voltage configurations for normal and suspend
system state for each regulator. The driver switches between those on
suspend/wake-up to provide quick and fluent output voltage change.
This driver requires MFD core driver for operation.
Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This is supposed to be testing "i < ARRAY_SIZE()" instead of just
"ARRAY_SIZE()".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
The modalias is set by the MODULE_DEVICE_TABLE, thus remove redundant
MODULE_ALIAS.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
The code to check whether num_regulator is valid is wrong because it should
iterate all array entries rather than break from the for loop if
pdata->regulators[i] is NULL.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Move regulator_list_voltage_{linear,linear_range,table} helper functions to
helpers.c.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Fix a build warning for !CONFIG_OF and a cast from void* to
unsigned int which is invalid on 64bit machines.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
I2C driver for the Dialog DA9210 Multi-phase 12A DC-DC Buck.
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: David Dajun Chen <david.chen@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This patch adds devicetree bindings for max8660, along with some
documentation.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
No functional change, just makes the code shorter.
[Resolved conflict with platdata patch -- broonie]
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Introduce an enum and denote the device type via struct i2c_id's
driver_data field rather than comparing strings.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
While the majority of supplies on devices are mandatory and can't be
physically omitted for electrical reasons some devices do have optional
supplies and need to know if they are missing, MMC being the most common
of these.
Currently the core accurately reports all errors when regulators are
requested since it does not know if the supply is one that must be provided
even if by a regulator software does not know about or if it is one that
may genuinely be disconnected. In order to allow this behaviour to be
changed and stub regulators to be provided in the former case add a new
regulator request function regulator_get_optional() which provides a hint
to the core that the regulator may genuinely not be connected.
Currently the implementation is identical to the current behaviour, future
patches will add support in the core for returning stub regulators in the
case where normal regulator_get() fails and the board has requested it.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
The voltage table of da9034 LDO12 is:
1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 2000000, 2050000
2700000, 2750000, 2800000, 2850000, 2900000, 2950000, 3000000, 3050000
The voltage table is composed of two linear ranges:
for selector 0 ... 7:
volt = 1700000 + 50000 * selector
for selector: 8 ... 15:
volt = 2700000 + 50000 * (selector - 8)
This patch converts da9034 LDO12 to use newly introduced helpers for multiple
linear ranges.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
The dev_attrs field of struct class is going away soon, dev_groups
should be used instead. This converts the regulator class code to use
the correct field.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
The SD, ALDO, and DLDO vlotage tables are composed of linear ranges.
This patch converts as3711 to use newly introduced helpers for multiple
linear ranges.
Below is the voltage table on datasheet:
SD:
00h: DC/DC powered down
01h-40h: Volt = 0.6V + sdx_vsel * 12.5mV
41h-70h: Volt = 1.4V + (sdx_vsel - 40h) * 25mV
71h-7Fh: Volt = 2.6V + (sdx_vsel - 70h) * 50mV
ALDO:
0h-0Fh: 1.2V + ldox_vsel * 50mV
10h-1Fh: 1.8V + (ldox_vsel - 10h) * 100mV
DLDO:
00h-10h: Volt = 0.9V + ldox_vsel * 50mV
11h-1fh: Do not use
20h-3fh: Volt = 1.75V + (ldox_vsel - 20h) * 50mV
Note, when convert to use linear ranges APIs, the equation for SD needs below
adjustment because the linear ranges APIs wiil substract range->min_sel when
apply the equation.
SD ( the equation to be used with linear ranges APIs )
01h-40h: Volt = 0.6125V + (sdx_vsel - 1h) * 12.5mV
41h-70h: Volt = 1.425V + (sdx_vsel - 41h) * 25mV
71h-7Fh: Volt = 2.650V + (sdx_vsel - 71h) * 50mV
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Some regulator APIs are broken if n_voltages setting is not set.
e.g. regulator_count_voltages(), regulator_list_voltage(), and
regulator_can_change_voltage() do not work if n_voltages setting is missing.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This driver can be built as a module, make it depend on MFD_88PM800.
Otherwise, we are not able to select this driver when MFD_88PM800=m.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Add the regulator driver for PMIC 88pm800 including device tree
support.
88pm800 is an I2C-based power-management IC containing voltage
regulators, a real-time clock, and some general purpose ADC devices,
Signed-off-by: Yi Zhang <yizhang@marvell.com>
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Current code does not allow fixed voltage range in multiple linear ranges.
If someone does set range->uV_step == 0 in one of the linear ranges, we hit
divided by zero bug. This patch fixes this issue.
For fixed voltage range, return any selector means the same voltage.
Thus just return 0.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
There is no need to use a normal per-CPU workqueue for delayed power downs
as they're not timing or performance critical and waking up a core for them
would defeat some of the point.
Signed-off-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Liam Girdwood <liam.r.girdwood@intel.com>
Fix a warning below.
drivers/regulator/lp872x.c:910:33: warning: cast from pointer to integer of
different size [-Wpointer-to-int-cast]
And checkpatch warnings are fixed.
WARNING: space prohibited before semicolon
Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Many regulators have several linear ranges of selector with different
step sizes, for example offering better resolution at lower voltages.
Provide regulator_{map,list}_voltage_linear_range() allowing these
regulators to use generic code. To do so a table of regulator_linear_range
structs needs to be pointed to from the descriptor.
This was inspired by similar code included in a driver submission from
Chao Xie and Yi Zhang at Marvell.
Signed-off-by: Mark Brown <broonie@linaro.org>
