diff options
Diffstat (limited to 'drivers/regulator/palmas-regulator.c')
| -rw-r--r-- | drivers/regulator/palmas-regulator.c | 175 |
1 files changed, 50 insertions, 125 deletions
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index 07aee694ba92..cde13bb5a8fb 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -309,68 +309,22 @@ static int palmas_list_voltage_smps(struct regulator_dev *dev, int id = rdev_get_id(dev); int mult = 1; - if (!selector) - return 0; - /* Read the multiplier set in VSEL register to return * the correct voltage. */ if (pmic->range[id]) mult = 2; - /* Voltage is (0.49V + (selector * 0.01V)) * RANGE - * as defined in data sheet. RANGE is either x1 or x2 - */ - return (490000 + (selector * 10000)) * mult; -} - -static int palmas_get_voltage_smps_sel(struct regulator_dev *dev) -{ - struct palmas_pmic *pmic = rdev_get_drvdata(dev); - int id = rdev_get_id(dev); - int selector; - unsigned int reg; - unsigned int addr; - - addr = palmas_regs_info[id].vsel_addr; - - palmas_smps_read(pmic->palmas, addr, ®); - - selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK; - - /* Adjust selector to match list_voltage ranges */ - if ((selector > 0) && (selector < 6)) - selector = 6; - if (!selector) - selector = 5; - if (selector > 121) - selector = 121; - selector -= 5; - - return selector; -} - -static int palmas_set_voltage_smps_sel(struct regulator_dev *dev, - unsigned selector) -{ - struct palmas_pmic *pmic = rdev_get_drvdata(dev); - int id = rdev_get_id(dev); - unsigned int reg = 0; - unsigned int addr; - - addr = palmas_regs_info[id].vsel_addr; - - /* Make sure we don't change the value of RANGE */ - if (pmic->range[id]) - reg |= PALMAS_SMPS12_VOLTAGE_RANGE; - - /* Adjust the linux selector into range used in VSEL register */ - if (selector) - reg |= selector + 5; - - palmas_smps_write(pmic->palmas, addr, reg); - - return 0; + if (selector == 0) + return 0; + else if (selector < 6) + return 500000 * mult; + else + /* Voltage is linear mapping starting from selector 6, + * volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE + * RANGE is either x1 or x2 + */ + return (490000 + ((selector - 5) * 10000)) * mult; } static int palmas_map_voltage_smps(struct regulator_dev *rdev, @@ -386,11 +340,11 @@ static int palmas_map_voltage_smps(struct regulator_dev *rdev, if (pmic->range[id]) { /* RANGE is x2 */ if (min_uV < 1000000) min_uV = 1000000; - ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 1; + ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6; } else { /* RANGE is x1 */ if (min_uV < 500000) min_uV = 500000; - ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 1; + ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6; } /* Map back into a voltage to verify we're still in bounds */ @@ -407,8 +361,8 @@ static struct regulator_ops palmas_ops_smps = { .disable = palmas_disable_smps, .set_mode = palmas_set_mode_smps, .get_mode = palmas_get_mode_smps, - .get_voltage_sel = palmas_get_voltage_smps_sel, - .set_voltage_sel = palmas_set_voltage_smps_sel, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = palmas_list_voltage_smps, .map_voltage = palmas_map_voltage_smps, }; @@ -436,44 +390,14 @@ static int palmas_is_enabled_ldo(struct regulator_dev *dev) return !!(reg); } -static int palmas_list_voltage_ldo(struct regulator_dev *dev, - unsigned selector) -{ - if (!selector) - return 0; - - /* voltage is 0.85V + (selector * 0.05v) */ - return 850000 + (selector * 50000); -} - -static int palmas_map_voltage_ldo(struct regulator_dev *rdev, - int min_uV, int max_uV) -{ - int ret, voltage; - - if (min_uV == 0) - return 0; - - if (min_uV < 900000) - min_uV = 900000; - ret = DIV_ROUND_UP(min_uV - 900000, 50000) + 1; - - /* Map back into a voltage to verify we're still in bounds */ - voltage = palmas_list_voltage_ldo(rdev, ret); - if (voltage < min_uV || voltage > max_uV) - return -EINVAL; - - return ret; -} - static struct regulator_ops palmas_ops_ldo = { .is_enabled = palmas_is_enabled_ldo, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, - .list_voltage = palmas_list_voltage_ldo, - .map_voltage = palmas_map_voltage_ldo, + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, }; /* @@ -595,7 +519,7 @@ static struct of_regulator_match palmas_matches[] = { { .name = "ldousb", }, }; -static void __devinit palmas_dt_to_pdata(struct device *dev, +static void palmas_dt_to_pdata(struct device *dev, struct device_node *node, struct palmas_pmic_platform_data *pdata) { @@ -603,6 +527,7 @@ static void __devinit palmas_dt_to_pdata(struct device *dev, u32 prop; int idx, ret; + node = of_node_get(node); regulators = of_find_node_by_name(node, "regulators"); if (!regulators) { dev_info(dev, "regulator node not found\n"); @@ -611,6 +536,7 @@ static void __devinit palmas_dt_to_pdata(struct device *dev, ret = of_regulator_match(dev, regulators, palmas_matches, PALMAS_NUM_REGS); + of_node_put(regulators); if (ret < 0) { dev_err(dev, "Error parsing regulator init data: %d\n", ret); return; @@ -642,11 +568,6 @@ static void __devinit palmas_dt_to_pdata(struct device *dev, pdata->reg_init[idx]->mode_sleep = prop; ret = of_property_read_u32(palmas_matches[idx].of_node, - "ti,warm_reset", &prop); - if (!ret) - pdata->reg_init[idx]->warm_reset = prop; - - ret = of_property_read_u32(palmas_matches[idx].of_node, "ti,tstep", &prop); if (!ret) pdata->reg_init[idx]->tstep = prop; @@ -663,7 +584,7 @@ static void __devinit palmas_dt_to_pdata(struct device *dev, } -static __devinit int palmas_probe(struct platform_device *pdev) +static int palmas_probe(struct platform_device *pdev) { struct palmas *palmas = dev_get_drvdata(pdev->dev.parent); struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data; @@ -733,6 +654,14 @@ static __devinit int palmas_probe(struct platform_device *pdev) continue; } + /* Initialise sleep/init values from platform data */ + if (pdata && pdata->reg_init[id]) { + reg_init = pdata->reg_init[id]; + ret = palmas_smps_init(palmas, id, reg_init); + if (ret) + goto err_unregister_regulator; + } + /* Register the regulators */ pmic->desc[id].name = palmas_regs_info[id].name; pmic->desc[id].id = id; @@ -753,29 +682,11 @@ static __devinit int palmas_probe(struct platform_device *pdev) pmic->desc[id].uV_step = 1250000; break; default: - pmic->desc[id].ops = &palmas_ops_smps; - pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES; - } - - pmic->desc[id].type = REGULATOR_VOLTAGE; - pmic->desc[id].owner = THIS_MODULE; - - /* Initialise sleep/init values from platform data */ - if (pdata) { - reg_init = pdata->reg_init[id]; - if (reg_init) { - ret = palmas_smps_init(palmas, id, reg_init); - if (ret) - goto err_unregister_regulator; - } - } - - /* - * read and store the RANGE bit for later use - * This must be done before regulator is probed otherwise - * we error in probe with unsuportable ranges. - */ - if (id != PALMAS_REG_SMPS10) { + /* + * Read and store the RANGE bit for later use + * This must be done before regulator is probed, + * otherwise we error in probe with unsupportable ranges. + */ addr = palmas_regs_info[id].vsel_addr; ret = palmas_smps_read(pmic->palmas, addr, ®); @@ -783,8 +694,19 @@ static __devinit int palmas_probe(struct platform_device *pdev) goto err_unregister_regulator; if (reg & PALMAS_SMPS12_VOLTAGE_RANGE) pmic->range[id] = 1; + + pmic->desc[id].ops = &palmas_ops_smps; + pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES; + pmic->desc[id].vsel_reg = + PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, + palmas_regs_info[id].vsel_addr); + pmic->desc[id].vsel_mask = + PALMAS_SMPS12_VOLTAGE_VSEL_MASK; } + pmic->desc[id].type = REGULATOR_VOLTAGE; + pmic->desc[id].owner = THIS_MODULE; + if (pdata) config.init_data = pdata->reg_data[id]; else @@ -821,6 +743,9 @@ static __devinit int palmas_probe(struct platform_device *pdev) pmic->desc[id].type = REGULATOR_VOLTAGE; pmic->desc[id].owner = THIS_MODULE; + pmic->desc[id].min_uV = 900000; + pmic->desc[id].uV_step = 50000; + pmic->desc[id].linear_min_sel = 1; pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, palmas_regs_info[id].vsel_addr); pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK; @@ -868,7 +793,7 @@ err_unregister_regulator: return ret; } -static int __devexit palmas_remove(struct platform_device *pdev) +static int palmas_remove(struct platform_device *pdev) { struct palmas_pmic *pmic = platform_get_drvdata(pdev); int id; @@ -878,7 +803,7 @@ static int __devexit palmas_remove(struct platform_device *pdev) return 0; } -static struct of_device_id __devinitdata of_palmas_match_tbl[] = { +static struct of_device_id of_palmas_match_tbl[] = { { .compatible = "ti,palmas-pmic", }, { /* end */ } }; @@ -890,7 +815,7 @@ static struct platform_driver palmas_driver = { .owner = THIS_MODULE, }, .probe = palmas_probe, - .remove = __devexit_p(palmas_remove), + .remove = palmas_remove, }; static int __init palmas_init(void) |