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    SubjectApplied "regulator: axp20x: Use linear voltage ranges for AXP20X LDO4" to the regulator tree
    The patch

    regulator: axp20x: Use linear voltage ranges for AXP20X LDO4

    has been applied to the regulator tree at

    git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git

    All being well this means that it will be integrated into the linux-next
    tree (usually sometime in the next 24 hours) and sent to Linus during
    the next merge window (or sooner if it is a bug fix), however if
    problems are discovered then the patch may be dropped or reverted.

    You may get further e-mails resulting from automated or manual testing
    and review of the tree, please engage with people reporting problems and
    send followup patches addressing any issues that are reported if needed.

    If any updates are required or you are submitting further changes they
    should be sent as incremental updates against current git, existing
    patches will not be replaced.

    Please add any relevant lists and maintainers to the CCs when replying
    to this mail.

    Thanks,
    Mark

    From 13d57e64352a5d3457d7782bc2f8b576e12b05f3 Mon Sep 17 00:00:00 2001
    From: Chen-Yu Tsai <wens@csie.org>
    Date: Tue, 2 Feb 2016 18:27:38 +0800
    Subject: [PATCH] regulator: axp20x: Use linear voltage ranges for AXP20X LDO4

    AXP20X datasheet lists the possible voltage settings for LDO4, so
    it was implemented using a voltage table. Upon closer examination,
    the valid voltages can be mapped into 3 linear ranges.

    Move AXP20X LDO4 to use linear ranges. The supporting code can be
    reused with later AXP8xx PMICs, which have a number of regulators
    that have 2 linear ranges.

    Signed-off-by: Chen-Yu Tsai <wens@csie.org>
    Signed-off-by: Mark Brown <broonie@kernel.org>
    ---
    drivers/regulator/axp20x-regulator.c | 32 +++++++++++++++++---------------
    1 file changed, 17 insertions(+), 15 deletions(-)

    diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
    index fafaaa8eb8b3..7d29893f833c 100644
    --- a/drivers/regulator/axp20x-regulator.c
    +++ b/drivers/regulator/axp20x-regulator.c
    @@ -106,8 +106,8 @@
    .ops = &axp20x_ops_fixed \
    }

    -#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask, \
    - _ereg, _emask) \
    +#define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages, \
    + _vreg, _vmask, _ereg, _emask) \
    [_family##_##_id] = { \
    .name = #_id, \
    .supply_name = (_supply), \
    @@ -115,30 +115,25 @@
    .regulators_node = of_match_ptr("regulators"), \
    .type = REGULATOR_VOLTAGE, \
    .id = _family##_##_id, \
    - .n_voltages = ARRAY_SIZE(_table), \
    + .n_voltages = (_n_voltages), \
    .owner = THIS_MODULE, \
    .vsel_reg = (_vreg), \
    .vsel_mask = (_vmask), \
    .enable_reg = (_ereg), \
    .enable_mask = (_emask), \
    - .volt_table = (_table), \
    - .ops = &axp20x_ops_table, \
    + .linear_ranges = (_ranges), \
    + .n_linear_ranges = ARRAY_SIZE(_ranges), \
    + .ops = &axp20x_ops_range, \
    }

    -static const int axp20x_ldo4_data[] = { 1250000, 1300000, 1400000, 1500000, 1600000,
    - 1700000, 1800000, 1900000, 2000000, 2500000,
    - 2700000, 2800000, 3000000, 3100000, 3200000,
    - 3300000 };
    -
    static struct regulator_ops axp20x_ops_fixed = {
    .list_voltage = regulator_list_voltage_linear,
    };

    -static struct regulator_ops axp20x_ops_table = {
    +static struct regulator_ops axp20x_ops_range = {
    .set_voltage_sel = regulator_set_voltage_sel_regmap,
    .get_voltage_sel = regulator_get_voltage_sel_regmap,
    - .list_voltage = regulator_list_voltage_table,
    - .map_voltage = regulator_map_voltage_ascend,
    + .list_voltage = regulator_list_voltage_linear_range,
    .enable = regulator_enable_regmap,
    .disable = regulator_disable_regmap,
    .is_enabled = regulator_is_enabled_regmap,
    @@ -159,6 +154,12 @@ static struct regulator_ops axp20x_ops_sw = {
    .is_enabled = regulator_is_enabled_regmap,
    };

    +static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
    + REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
    + REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
    + REGULATOR_LINEAR_RANGE(2500000, 0x9, 0xf, 100000),
    +};
    +
    static const struct regulator_desc axp20x_regulators[] = {
    AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
    AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
    @@ -169,8 +170,9 @@ static const struct regulator_desc axp20x_regulators[] = {
    AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
    AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
    AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
    - AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
    - AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
    + AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
    + 16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
    + 0x08),
    AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
    AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
    AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
    --
    2.7.0.rc3
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