MAX77686 PMIC support Dyamic Voltage Scaling (DVS) on a set of Buck regulators. A number of GPIO are connected to these lines and are requested by the mfd driver. Setup the GPIO pins from the regulator driver. Signed-off-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx> --- drivers/regulator/max77686.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c index ef1af2d..ecce77a 100644 --- a/drivers/regulator/max77686.c +++ b/drivers/regulator/max77686.c @@ -435,6 +435,12 @@ static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev, } #endif /* CONFIG_OF */ +static inline bool max77686_is_dvs_buck(int id) +{ + /* BUCK 2,3 and 4 support DVS */ + return (id >= MAX77686_BUCK2 && id <= MAX77686_BUCK4); +} + static int max77686_pmic_probe(struct platform_device *pdev) { struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); @@ -442,6 +448,9 @@ static int max77686_pmic_probe(struct platform_device *pdev) struct max77686_data *max77686; int i, ret = 0; struct regulator_config config = { }; + unsigned int reg; + int buck_default_idx; + int buck_old_idx; dev_dbg(&pdev->dev, "%s\n", __func__); @@ -472,13 +481,34 @@ static int max77686_pmic_probe(struct platform_device *pdev) config.driver_data = max77686; platform_set_drvdata(pdev, max77686); + buck_default_idx = pdata->buck_default_idx; + buck_old_idx = max77686_read_gpios(pdata); + for (i = 0; i < MAX77686_REGULATORS; i++) { struct regulator_dev *rdev; + int id = pdata->regulators[i].id; config.init_data = pdata->regulators[i].initdata; config.of_node = pdata->regulators[i].of_node; max77686->opmode[i] = regulators[i].enable_mask; + + if (max77686_is_dvs_buck(id)) { + /* Try to copy over data so we keep firmware settings */ + reg = regulators[i].vsel_reg; + + ret = regmap_reg_copy(iodev->regmap, + reg + buck_default_idx, + reg + buck_old_idx); + + if (ret) + dev_warn(&pdev->dev, "Copy err %d => %d (%d)\n", + reg + buck_old_idx, + reg + buck_default_idx, ret); + + regulators[i].vsel_reg += buck_default_idx; + } + rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(rdev)) { @@ -488,6 +518,10 @@ static int max77686_pmic_probe(struct platform_device *pdev) } } + ret = max77686_setup_gpios(iodev->dev); + if (ret) + return ret; + return 0; } -- 2.0.0.rc2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html