diff options
| author | Haojian Zhuang <haojian.zhuang@marvell.com> | 2009-07-10 16:03:36 +0800 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2009-09-22 13:32:38 +0100 |
| commit | c1b60873ca2078bfca94b73bc88ef1c5adcc928b (patch) | |
| tree | 73240a703d2c6beff066359069d013825b980063 /drivers/regulator/da903x.c | |
| parent | ed6543243a1c557dbe2005a86f6d8e851c1ebb79 (diff) | |
| download | linux-c1b60873ca2078bfca94b73bc88ef1c5adcc928b.tar.bz2 | |
regulator: support list voltage in da903x
Make da903x driver to list voltage and count voltage.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator/da903x.c')
| -rw-r--r-- | drivers/regulator/da903x.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c index d8d251f066a4..236de1134397 100644 --- a/drivers/regulator/da903x.c +++ b/drivers/regulator/da903x.c @@ -87,6 +87,10 @@ struct da903x_regulator_info { int enable_bit; }; +static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950, + 2000, 2050, 2700, 2750, 2800, 2850, + 2900, 2950, 3000, 3050 }; + static inline struct device *to_da903x_dev(struct regulator_dev *rdev) { return rdev_get_dev(rdev)->parent->parent; @@ -170,6 +174,17 @@ static int da903x_is_enabled(struct regulator_dev *rdev) return !!(reg_val & (1 << info->enable_bit)); } +static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector) +{ + struct da903x_regulator_info *info = rdev_get_drvdata(rdev); + int ret; + + ret = info->min_uV + info->step_uV * selector; + if (ret > info->max_uV) + return -EINVAL; + return ret; +} + /* DA9030 specific operations */ static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) @@ -313,9 +328,18 @@ static int da9034_get_ldo12_voltage(struct regulator_dev *rdev) return info->min_uV + info->step_uV * val; } +static int da9034_list_ldo12_voltage(struct regulator_dev *rdev, + unsigned selector) +{ + if (selector > ARRAY_SIZE(da9034_ldo12_data)) + return -EINVAL; + return da9034_ldo12_data[selector] * 1000; +} + static struct regulator_ops da903x_regulator_ldo_ops = { .set_voltage = da903x_set_ldo_voltage, .get_voltage = da903x_get_voltage, + .list_voltage = da903x_list_voltage, .enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, @@ -325,6 +349,7 @@ static struct regulator_ops da903x_regulator_ldo_ops = { static struct regulator_ops da9030_regulator_ldo14_ops = { .set_voltage = da9030_set_ldo14_voltage, .get_voltage = da9030_get_ldo14_voltage, + .list_voltage = da903x_list_voltage, .enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, @@ -334,6 +359,7 @@ static struct regulator_ops da9030_regulator_ldo14_ops = { static struct regulator_ops da9030_regulator_ldo1_15_ops = { .set_voltage = da9030_set_ldo1_15_voltage, .get_voltage = da903x_get_voltage, + .list_voltage = da903x_list_voltage, .enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, @@ -342,6 +368,7 @@ static struct regulator_ops da9030_regulator_ldo1_15_ops = { static struct regulator_ops da9034_regulator_dvc_ops = { .set_voltage = da9034_set_dvc_voltage, .get_voltage = da903x_get_voltage, + .list_voltage = da903x_list_voltage, .enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, @@ -351,6 +378,7 @@ static struct regulator_ops da9034_regulator_dvc_ops = { static struct regulator_ops da9034_regulator_ldo12_ops = { .set_voltage = da9034_set_ldo12_voltage, .get_voltage = da9034_get_ldo12_voltage, + .list_voltage = da9034_list_ldo12_voltage, .enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, @@ -363,6 +391,7 @@ static struct regulator_ops da9034_regulator_ldo12_ops = { .ops = &da903x_regulator_ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _pmic##_ID_LDO##_id, \ + .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ .owner = THIS_MODULE, \ }, \ .min_uV = (min) * 1000, \ @@ -382,6 +411,7 @@ static struct regulator_ops da9034_regulator_ldo12_ops = { .ops = &da9034_regulator_dvc_ops, \ .type = REGULATOR_VOLTAGE, \ .id = DA9030_ID_##_id, \ + .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ .owner = THIS_MODULE, \ }, \ .min_uV = (min) * 1000, \ @@ -403,6 +433,7 @@ static struct regulator_ops da9034_regulator_ldo12_ops = { .ops = &da9034_regulator_dvc_ops, \ .type = REGULATOR_VOLTAGE, \ .id = DA9034_ID_##_id, \ + .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ .owner = THIS_MODULE, \ }, \ .min_uV = (min) * 1000, \ @@ -424,6 +455,7 @@ static struct regulator_ops da9034_regulator_ldo12_ops = { .ops = &da9034_regulator_dvc_ops, \ .type = REGULATOR_VOLTAGE, \ .id = DA9035_ID_##_id, \ + .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ .owner = THIS_MODULE, \ }, \ .min_uV = (min) * 1000, \ @@ -517,8 +549,10 @@ static int __devinit da903x_regulator_probe(struct platform_device *pdev) } /* Workaround for the weird LDO12 voltage setting */ - if (ri->desc.id == DA9034_ID_LDO12) + if (ri->desc.id == DA9034_ID_LDO12) { ri->desc.ops = &da9034_regulator_ldo12_ops; + ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data); + } if (ri->desc.id == DA9030_ID_LDO14) ri->desc.ops = &da9030_regulator_ldo14_ops; |