diff options
author | Nikita Kiryanov <nikita@compulab.co.il> | 2015-11-25 13:59:04 +0200 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2015-11-25 12:25:26 +0000 |
commit | c0ea88b890d67cff2667188f14189d8346e89a0f (patch) | |
tree | bacce165ae931e9e40e80a6c73b15eb539c31453 /drivers | |
parent | 8005c49d9aea74d382f474ce11afbbc7d7130bec (diff) | |
download | linux-c0ea88b890d67cff2667188f14189d8346e89a0f.tar.bz2 |
regulator: tps65218: add support for LS3 current regulator
Add support for TPS65218 LS3 current regulator, which is capable of 4
current input limit modes: 100, 200, 500, and 1000 uA.
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/regulator/tps65218-regulator.c | 137 |
1 files changed, 107 insertions, 30 deletions
diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c index a02c1b961039..a5e5634eeb9e 100644 --- a/drivers/regulator/tps65218-regulator.c +++ b/drivers/regulator/tps65218-regulator.c @@ -27,19 +27,22 @@ #include <linux/regulator/machine.h> #include <linux/mfd/tps65218.h> -enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 }; +enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, + DCDC5, DCDC6, LDO1, LS3 }; -#define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, \ - _lr, _nlr, _delay, _fuv) \ +#define TPS65218_REGULATOR(_name, _id, _type, _ops, _n, _vr, _vm, _er, _em, \ + _cr, _cm, _lr, _nlr, _delay, _fuv) \ { \ .name = _name, \ .id = _id, \ .ops = &_ops, \ .n_voltages = _n, \ - .type = REGULATOR_VOLTAGE, \ + .type = _type, \ .owner = THIS_MODULE, \ .vsel_reg = _vr, \ .vsel_mask = _vm, \ + .csel_reg = _cr, \ + .csel_mask = _cm, \ .enable_reg = _er, \ .enable_mask = _em, \ .volt_table = NULL, \ @@ -80,6 +83,7 @@ static struct tps_info tps65218_pmic_regs[] = { TPS65218_INFO(DCDC5, "DCDC5", 1000000, 1000000), TPS65218_INFO(DCDC6, "DCDC6", 1800000, 1800000), TPS65218_INFO(LDO1, "LDO1", 900000, 3400000), + TPS65218_INFO(LS3, "LS3", -1, -1), }; #define TPS65218_OF_MATCH(comp, label) \ @@ -96,6 +100,7 @@ static const struct of_device_id tps65218_of_match[] = { TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs[DCDC5]), TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs[DCDC6]), TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs[LDO1]), + TPS65218_OF_MATCH("ti,tps65218-ls3", tps65218_pmic_regs[LS3]), { } }; MODULE_DEVICE_TABLE(of, tps65218_of_match); @@ -175,6 +180,68 @@ static struct regulator_ops tps65218_ldo1_dcdc34_ops = { .map_voltage = regulator_map_voltage_linear_range, }; +static const int ls3_currents[] = { 100, 200, 500, 1000 }; + +static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev, + int lim_uA) +{ + unsigned int index = 0; + unsigned int num_currents = ARRAY_SIZE(ls3_currents); + struct tps65218 *tps = rdev_get_drvdata(dev); + + while (index < num_currents && ls3_currents[index] != lim_uA) + index++; + + if (index == num_currents) + return -EINVAL; + + return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask, + index << 2, TPS65218_PROTECT_L1); +} + +static int tps65218_pmic_set_current_limit(struct regulator_dev *dev, + int min_uA, int max_uA) +{ + int index = 0; + unsigned int num_currents = ARRAY_SIZE(ls3_currents); + struct tps65218 *tps = rdev_get_drvdata(dev); + + while (index < num_currents && ls3_currents[index] < max_uA) + index++; + + index--; + + if (index < 0 || ls3_currents[index] < min_uA) + return -EINVAL; + + return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask, + index << 2, TPS65218_PROTECT_L1); +} + +static int tps65218_pmic_get_current_limit(struct regulator_dev *dev) +{ + int retval; + unsigned int index; + struct tps65218 *tps = rdev_get_drvdata(dev); + + retval = tps65218_reg_read(tps, dev->desc->csel_reg, &index); + if (retval < 0) + return retval; + + index = (index & dev->desc->csel_mask) >> 2; + + return ls3_currents[index]; +} + +static struct regulator_ops tps65218_ls3_ops = { + .is_enabled = regulator_is_enabled_regmap, + .enable = tps65218_pmic_enable, + .disable = tps65218_pmic_disable, + .set_input_current_limit = tps65218_pmic_set_input_current_lim, + .set_current_limit = tps65218_pmic_set_current_limit, + .get_current_limit = tps65218_pmic_get_current_limit, +}; + /* Operations permitted on DCDC5, DCDC6 */ static struct regulator_ops tps65218_dcdc56_pmic_ops = { .is_enabled = regulator_is_enabled_regmap, @@ -183,36 +250,46 @@ static struct regulator_ops tps65218_dcdc56_pmic_ops = { }; static const struct regulator_desc regulators[] = { - TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, tps65218_dcdc12_ops, 64, - TPS65218_REG_CONTROL_DCDC1, - TPS65218_CONTROL_DCDC1_MASK, - TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, - dcdc1_dcdc2_ranges, 2, 4000, 0), - TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64, - TPS65218_REG_CONTROL_DCDC2, - TPS65218_CONTROL_DCDC2_MASK, - TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, - dcdc1_dcdc2_ranges, 2, 4000, 0), - TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops, - 64, TPS65218_REG_CONTROL_DCDC3, + TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, REGULATOR_VOLTAGE, + tps65218_dcdc12_ops, 64, TPS65218_REG_CONTROL_DCDC1, + TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1, + TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges, + 2, 4000, 0), + TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, REGULATOR_VOLTAGE, + tps65218_dcdc12_ops, 64, TPS65218_REG_CONTROL_DCDC2, + TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1, + TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges, + 2, 4000, 0), + TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, REGULATOR_VOLTAGE, + tps65218_ldo1_dcdc34_ops, 64, + TPS65218_REG_CONTROL_DCDC3, TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1, - TPS65218_ENABLE1_DC3_EN, ldo1_dcdc3_ranges, 2, 0, 0), - TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops, - 53, TPS65218_REG_CONTROL_DCDC4, - TPS65218_CONTROL_DCDC4_MASK, - TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, - dcdc4_ranges, 2, 0, 0), - TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops, - 1, -1, -1, TPS65218_REG_ENABLE1, - TPS65218_ENABLE1_DC5_EN, NULL, 0, 0, 1000000), - TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops, - 1, -1, -1, TPS65218_REG_ENABLE1, - TPS65218_ENABLE1_DC6_EN, NULL, 0, 0, 1800000), - TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64, + TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2, + 0, 0), + TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, REGULATOR_VOLTAGE, + tps65218_ldo1_dcdc34_ops, 53, + TPS65218_REG_CONTROL_DCDC4, + TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1, + TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2, + 0, 0), + TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, REGULATOR_VOLTAGE, + tps65218_dcdc56_pmic_ops, 1, -1, -1, + TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0, 0, + NULL, 0, 0, 1000000), + TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, REGULATOR_VOLTAGE, + tps65218_dcdc56_pmic_ops, 1, -1, -1, + TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0, 0, + NULL, 0, 0, 1800000), + TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, REGULATOR_VOLTAGE, + tps65218_ldo1_dcdc34_ops, 64, TPS65218_REG_CONTROL_LDO1, TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2, - TPS65218_ENABLE2_LDO1_EN, ldo1_dcdc3_ranges, + TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges, 2, 0, 0), + TPS65218_REGULATOR("LS3", TPS65218_LS_3, REGULATOR_CURRENT, + tps65218_ls3_ops, 0, 0, 0, TPS65218_REG_ENABLE2, + TPS65218_ENABLE2_LS3_EN, TPS65218_REG_CONFIG2, + TPS65218_CONFIG2_LS3ILIM_MASK, NULL, 0, 0, 0), }; static int tps65218_regulator_probe(struct platform_device *pdev) |