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regulator: rohm-regulator: linear voltage support

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The helper for obtaining HW-state based DVS voltage levels currently only
works for regulators using linear-ranges. Extend support to regulators with
simple linear mappings and add also proper error path if pickable-ranges
regulators call this.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Matti Vaittinen 2021-04-05 14:43:26 +03:00 committed by Lee Jones
parent 703b288f3e
commit 9cf37cec4b
1 changed files with 15 additions and 2 deletions
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17
drivers/regulator/rohm-regulator.c
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@ -22,13 +22,26 @@ static int set_dvs_level(const struct regulator_desc *desc,
return ret;
return 0;
}
/* If voltage is set to 0 => disable */
if (uv == 0) {
if (omask)
return regmap_update_bits(regmap, oreg, omask, 0);
}
/* Some setups don't allow setting own voltage but do allow enabling */
if (!mask) {
if (omask)
return regmap_update_bits(regmap, oreg, omask, omask);
return -EINVAL;
}
for (i = 0; i < desc->n_voltages; i++) {
ret = regulator_desc_list_voltage_linear_range(desc, i);
/* NOTE to next hacker - Does not support pickable ranges */
if (desc->linear_range_selectors)
return -EINVAL;
if (desc->n_linear_ranges)
ret = regulator_desc_list_voltage_linear_range(desc, i);
else
ret = regulator_desc_list_voltage_linear(desc, i);
if (ret < 0)
continue;
if (ret == uv) {