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>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
For fixed voltage, DA9030_LDO13 and DA9034_LDO5, the info->vol_reg is
DA9030_INVAL/DA9034_INVAL.
It does not make sense to read/write to DA9030_INVAL/DA9034_INVAL address.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Fixed voltage is a kind of linear mapping where n_voltages is 1.
This change allows [list|map]_voltage_linear to be used for fixed
voltage.
For fixed voltage, n_voltages is 1 and the only valid selector is 0.
Thus we actually don't care the uV_step setting.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The voltage mapping table for LDO2 is exactly the same as VDCDCx.
Thus we can use one mapping table for both LDO2 and VDCDCx instead of
duplicating the mapping table.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The min_uV and max_uV are not used in this driver.
For table based voltage mappings, we can get min_uV and max_uV by
info->table[0] and info->table[table_len -1].
Thus remove min_uV and max_uV from struct tps_info.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Fix below checkpatch warnings:
$ scripts/checkpatch.pl -f drivers/regulator/max77686.c
ERROR: return is not a function, parentheses are not required
+ return (DIV_ROUND_UP(rdev->desc->uV_step
WARNING: line over 80 characters
+ .ops = &max77686_buck_dvs_ops, \
total: 1 errors, 1 warnings, 339 lines checked
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Since there are two linear ranges for the LDO voltages provide a voltage
mapping function and then use regulator_set_voltage_sel_regmap().
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Both max77686_ops and max77686_buck_dvs_ops use simple linear voltage maps.
Thus use regulator_map_voltage_linear is more efficient than using the defult
regulator_map_voltage_iterate.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
wm8350_dcdc_ops uses simple linear voltage maps.
Thus use regulator_map_voltage_linear is more efficient than using the default
regulator_map_voltage_iterate.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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>
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>
Use the new of_match_ptr() macro for the of_match_table
pointer entry to avoid having to #define match NULL.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
wm8400_dcdc_ops uses simple linear voltage maps.
Thus use regulator_map_voltage_linear is more efficient than using the default
regulator_map_voltage_iterate.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
wm831x_alive_ldo_ops uses simple linear voltage maps.
Thus use regulator_map_voltage_linear is more efficient than using the default
regulator_map_voltage_iterate.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The WM8350 DCDCs have a simple linear mapping from selectors to voltages
so can be converted very simply to use the new infrastructure for a nice
reduction in code size.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Axel Lin
Mark Brown
Lee Jones
Jonghwa Lee