diff options
Diffstat (limited to 'drivers/regulator/twl6030-regulator.c')
| -rw-r--r-- | drivers/regulator/twl6030-regulator.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/drivers/regulator/twl6030-regulator.c b/drivers/regulator/twl6030-regulator.c index 5fe208b381eb..b8100c3cedad 100644 --- a/drivers/regulator/twl6030-regulator.c +++ b/drivers/regulator/twl6030-regulator.c @@ -57,6 +57,9 @@ struct twlreg_info { #define VREG_BC_PROC 3 #define VREG_BC_CLK_RST 4 +/* TWL6030 LDO register values for VREG_VOLTAGE */ +#define TWL6030_VREG_VOLTAGE_WR_S BIT(7) + /* TWL6030 LDO register values for CFG_STATE */ #define TWL6030_CFG_STATE_OFF 0x00 #define TWL6030_CFG_STATE_ON 0x01 @@ -68,9 +71,10 @@ struct twlreg_info { #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\ TWL6030_CFG_STATE_APP_SHIFT) -/* Flags for SMPS Voltage reading */ +/* Flags for SMPS Voltage reading and LDO reading*/ #define SMPS_OFFSET_EN BIT(0) #define SMPS_EXTENDED_EN BIT(1) +#define TWL_6030_WARM_RESET BIT(3) /* twl6032 SMPS EPROM values */ #define TWL6030_SMPS_OFFSET 0xB0 @@ -250,6 +254,9 @@ twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); + if (info->flags & TWL_6030_WARM_RESET) + selector |= TWL6030_VREG_VOLTAGE_WR_S; + return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, selector); } @@ -259,6 +266,9 @@ static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev) struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); + if (info->flags & TWL_6030_WARM_RESET) + vsel &= ~TWL6030_VREG_VOLTAGE_WR_S; + return vsel; } @@ -665,14 +675,14 @@ static int twlreg_probe(struct platform_device *pdev) struct regulation_constraints *c; struct regulator_dev *rdev; struct regulator_config config = { }; + struct device_node *np = pdev->dev.of_node; template = of_device_get_match_data(&pdev->dev); if (!template) return -ENODEV; id = template->desc.id; - initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node, - &template->desc); + initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc); if (!initdata) return -EINVAL; @@ -710,10 +720,13 @@ static int twlreg_probe(struct platform_device *pdev) break; } + if (of_get_property(np, "ti,retain-on-reset", NULL)) + info->flags |= TWL_6030_WARM_RESET; + config.dev = &pdev->dev; config.init_data = initdata; config.driver_data = info; - config.of_node = pdev->dev.of_node; + config.of_node = np; rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); if (IS_ERR(rdev)) { |