regulator: max77650: Convert MAX77651 SBB1 to pickable linear range
The pickable linear range is suitable for The MAX77651 SBB1. According to MAX77651 TV_SBB1 Code Table: Use BIT[1:0] as range selectors. Use BIT[5:2] as selectors for each linear range. The MAX77651 SBB1 supports up to selector 57, selector 58 ~ 63 are RSVD, thus set n_voltage to 58. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>alistair/sunxi64-5.4-dsi
Axel Lin
Mark Brown
parent
68ce3a4461
commit
3df4235ac4
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@ -20,6 +20,8 @@
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#define MAX77650_REGULATOR_V_LDO_MASK GENMASK(6, 0)
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#define MAX77650_REGULATOR_V_SBB_MASK GENMASK(5, 0)
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#define MAX77651_REGULATOR_V_SBB1_MASK GENMASK(5, 2)
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#define MAX77651_REGULATOR_V_SBB1_RANGE_MASK GENMASK(1, 0)
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#define MAX77650_REGULATOR_AD_MASK BIT(3)
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#define MAX77650_REGULATOR_AD_DISABLED 0x00
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@ -27,6 +29,8 @@
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#define MAX77650_REGULATOR_CURR_LIM_MASK GENMASK(7, 6)
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static struct max77650_regulator_desc max77651_SBB1_desc;
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enum {
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MAX77650_REGULATOR_ID_LDO = 0,
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MAX77650_REGULATOR_ID_SBB0,
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@ -41,43 +45,20 @@ struct max77650_regulator_desc {
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unsigned int regB;
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};
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static const unsigned int max77651_sbb1_regulator_volt_table[] = {
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2400000, 3200000, 4000000, 4800000,
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2450000, 3250000, 4050000, 4850000,
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2500000, 3300000, 4100000, 4900000,
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2550000, 3350000, 4150000, 4950000,
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2600000, 3400000, 4200000, 5000000,
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2650000, 3450000, 4250000, 5050000,
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2700000, 3500000, 4300000, 5100000,
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2750000, 3550000, 4350000, 5150000,
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2800000, 3600000, 4400000, 5200000,
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2850000, 3650000, 4450000, 5250000,
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2900000, 3700000, 4500000, 0,
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2950000, 3750000, 4550000, 0,
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3000000, 3800000, 4600000, 0,
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3050000, 3850000, 4650000, 0,
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3100000, 3900000, 4700000, 0,
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3150000, 3950000, 4750000, 0,
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static const unsigned int max77651_sbb1_volt_range_sel[] = {
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0x0, 0x1, 0x2, 0x3
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};
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#define MAX77651_REGULATOR_SBB1_SEL_DEC(_val) \
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(((_val & 0x3c) >> 2) | ((_val & 0x03) << 4))
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#define MAX77651_REGULATOR_SBB1_SEL_ENC(_val) \
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(((_val & 0x30) >> 4) | ((_val & 0x0f) << 2))
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#define MAX77650_REGULATOR_SBB1_SEL_DECR(_val) \
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do { \
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_val = MAX77651_REGULATOR_SBB1_SEL_DEC(_val); \
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_val--; \
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_val = MAX77651_REGULATOR_SBB1_SEL_ENC(_val); \
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} while (0)
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#define MAX77650_REGULATOR_SBB1_SEL_INCR(_val) \
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do { \
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_val = MAX77651_REGULATOR_SBB1_SEL_DEC(_val); \
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_val++; \
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_val = MAX77651_REGULATOR_SBB1_SEL_ENC(_val); \
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} while (0)
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static const struct regulator_linear_range max77651_sbb1_volt_ranges[] = {
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/* range index 0 */
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REGULATOR_LINEAR_RANGE(2400000, 0x00, 0x0f, 50000),
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/* range index 1 */
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REGULATOR_LINEAR_RANGE(3200000, 0x00, 0x0f, 50000),
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/* range index 2 */
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REGULATOR_LINEAR_RANGE(4000000, 0x00, 0x0f, 50000),
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/* range index 3 */
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REGULATOR_LINEAR_RANGE(4800000, 0x00, 0x09, 50000),
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};
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static const unsigned int max77650_current_limit_table[] = {
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1000000, 866000, 707000, 500000,
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@ -130,6 +111,7 @@ static int max77650_regulator_disable(struct regulator_dev *rdev)
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static int max77650_regulator_set_voltage_sel(struct regulator_dev *rdev,
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unsigned int sel)
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{
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struct max77650_regulator_desc *rdesc = rdev_get_drvdata(rdev);
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int rv = 0, curr, diff;
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bool ascending;
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@ -137,15 +119,24 @@ static int max77650_regulator_set_voltage_sel(struct regulator_dev *rdev,
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* If the regulator is disabled, we can program the desired
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* voltage right away.
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*/
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if (!max77650_regulator_is_enabled(rdev))
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return regulator_set_voltage_sel_regmap(rdev, sel);
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if (!max77650_regulator_is_enabled(rdev)) {
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if (rdesc == &max77651_SBB1_desc)
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return regulator_set_voltage_sel_pickable_regmap(rdev,
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sel);
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else
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return regulator_set_voltage_sel_regmap(rdev, sel);
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}
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/*
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* Otherwise we need to manually ramp the output voltage up/down
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* one step at a time.
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*/
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curr = regulator_get_voltage_sel_regmap(rdev);
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if (rdesc == &max77651_SBB1_desc)
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curr = regulator_get_voltage_sel_pickable_regmap(rdev);
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else
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curr = regulator_get_voltage_sel_regmap(rdev);
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if (curr < 0)
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return curr;
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@ -162,7 +153,12 @@ static int max77650_regulator_set_voltage_sel(struct regulator_dev *rdev,
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* the selector equals 0.
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*/
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for (ascending ? curr++ : curr--;; ascending ? curr++ : curr--) {
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rv = regulator_set_voltage_sel_regmap(rdev, curr);
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if (rdesc == &max77651_SBB1_desc)
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rv = regulator_set_voltage_sel_pickable_regmap(rdev,
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curr);
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else
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rv = regulator_set_voltage_sel_regmap(rdev, curr);
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if (rv)
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return rv;
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@ -173,50 +169,6 @@ static int max77650_regulator_set_voltage_sel(struct regulator_dev *rdev,
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return 0;
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}
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/*
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* Special case: non-linear voltage table for max77651 SBB1 - software
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* must ensure the voltage is ramped in 50mV increments.
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*/
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static int max77651_regulator_sbb1_set_voltage_sel(struct regulator_dev *rdev,
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unsigned int sel)
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{
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int rv = 0, curr, vcurr, vdest, vdiff;
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/*
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* If the regulator is disabled, we can program the desired
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* voltage right away.
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*/
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if (!max77650_regulator_is_enabled(rdev))
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return regulator_set_voltage_sel_regmap(rdev, sel);
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curr = regulator_get_voltage_sel_regmap(rdev);
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if (curr < 0)
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return curr;
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if (curr == sel)
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return 0; /* Already there. */
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vcurr = max77651_sbb1_regulator_volt_table[curr];
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vdest = max77651_sbb1_regulator_volt_table[sel];
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vdiff = vcurr - vdest;
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for (;;) {
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if (vdiff > 0)
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MAX77650_REGULATOR_SBB1_SEL_DECR(curr);
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else
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MAX77650_REGULATOR_SBB1_SEL_INCR(curr);
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rv = regulator_set_voltage_sel_regmap(rdev, curr);
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if (rv)
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return rv;
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if (curr == sel)
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break;
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};
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return 0;
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}
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static const struct regulator_ops max77650_regulator_LDO_ops = {
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.is_enabled = max77650_regulator_is_enabled,
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.enable = max77650_regulator_enable,
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@ -241,14 +193,14 @@ static const struct regulator_ops max77650_regulator_SBB_ops = {
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.set_active_discharge = regulator_set_active_discharge_regmap,
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};
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/* Special case for max77651 SBB1 - non-linear voltage mapping. */
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/* Special case for max77651 SBB1 - pickable linear-range voltage mapping. */
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static const struct regulator_ops max77651_SBB1_regulator_ops = {
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.is_enabled = max77650_regulator_is_enabled,
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.enable = max77650_regulator_enable,
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.disable = max77650_regulator_disable,
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.list_voltage = regulator_list_voltage_table,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = max77651_regulator_sbb1_set_voltage_sel,
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.list_voltage = regulator_list_voltage_pickable_linear_range,
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.get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
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.set_voltage_sel = max77650_regulator_set_voltage_sel,
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.get_current_limit = regulator_get_current_limit_regmap,
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.set_current_limit = regulator_set_current_limit_regmap,
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.set_active_discharge = regulator_set_active_discharge_regmap,
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@ -345,9 +297,13 @@ static struct max77650_regulator_desc max77651_SBB1_desc = {
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.supply_name = "in-sbb1",
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.id = MAX77650_REGULATOR_ID_SBB1,
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.ops = &max77651_SBB1_regulator_ops,
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.volt_table = max77651_sbb1_regulator_volt_table,
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.n_voltages = ARRAY_SIZE(max77651_sbb1_regulator_volt_table),
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.vsel_mask = MAX77650_REGULATOR_V_SBB_MASK,
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.linear_range_selectors = max77651_sbb1_volt_range_sel,
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.linear_ranges = max77651_sbb1_volt_ranges,
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.n_linear_ranges = ARRAY_SIZE(max77651_sbb1_volt_ranges),
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.n_voltages = 58,
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.vsel_range_mask = MAX77651_REGULATOR_V_SBB1_RANGE_MASK,
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.vsel_range_reg = MAX77650_REG_CNFG_SBB1_A,
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.vsel_mask = MAX77651_REGULATOR_V_SBB1_MASK,
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.vsel_reg = MAX77650_REG_CNFG_SBB1_A,
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.active_discharge_off = MAX77650_REGULATOR_AD_DISABLED,
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.active_discharge_on = MAX77650_REGULATOR_AD_ENABLED,
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