diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/ab8500.c | 150 |
1 files changed, 87 insertions, 63 deletions
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c index d1563907d3c8..3571b5425b36 100644 --- a/drivers/regulator/ab8500.c +++ b/drivers/regulator/ab8500.c @@ -708,11 +708,92 @@ static struct ab8500_reg_init ab8500_reg_init[] = { REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16), }; +static __devinit int +ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value) +{ + int err; + + if (value & ~ab8500_reg_init[id].mask) { + dev_err(&pdev->dev, + "Configuration error: value outside mask.\n"); + return -EINVAL; + } + + err = abx500_mask_and_set_register_interruptible( + &pdev->dev, + ab8500_reg_init[id].bank, + ab8500_reg_init[id].addr, + ab8500_reg_init[id].mask, + value); + if (err < 0) { + dev_err(&pdev->dev, + "Failed to initialize 0x%02x, 0x%02x.\n", + ab8500_reg_init[id].bank, + ab8500_reg_init[id].addr); + return err; + } + + dev_vdbg(&pdev->dev, + "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", + ab8500_reg_init[id].bank, + ab8500_reg_init[id].addr, + ab8500_reg_init[id].mask, + value); + + return 0; +} + +static __devinit int ab8500_regulator_register(struct platform_device *pdev, + struct regulator_init_data *init_data, + int id, + struct device_node *np) +{ + struct ab8500_regulator_info *info = NULL; + struct regulator_config config = { }; + int err; + + /* assign per-regulator data */ + info = &ab8500_regulator_info[id]; + info->dev = &pdev->dev; + + config.dev = &pdev->dev; + config.init_data = init_data; + config.driver_data = info; + config.of_node = np; + + /* fix for hardware before ab8500v2.0 */ + if (abx500_get_chip_id(info->dev) < 0x20) { + if (info->desc.id == AB8500_LDO_AUX3) { + info->desc.n_voltages = + ARRAY_SIZE(ldo_vauxn_voltages); + info->voltages = ldo_vauxn_voltages; + info->voltages_len = + ARRAY_SIZE(ldo_vauxn_voltages); + info->voltage_mask = 0xf; + } + } + + /* register regulator with framework */ + info->regulator = regulator_register(&info->desc, &config); + if (IS_ERR(info->regulator)) { + err = PTR_ERR(info->regulator); + dev_err(&pdev->dev, "failed to register regulator %s\n", + info->desc.name); + /* when we fail, un-register all earlier regulators */ + while (--id >= 0) { + info = &ab8500_regulator_info[id]; + regulator_unregister(info->regulator); + } + return err; + } + + return 0; +} + static __devinit int ab8500_regulator_probe(struct platform_device *pdev) { struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); struct ab8500_platform_data *pdata; - struct regulator_config config = { }; int i, err; if (!ab8500) { @@ -733,8 +814,7 @@ static __devinit int ab8500_regulator_probe(struct platform_device *pdev) /* initialize registers */ for (i = 0; i < pdata->num_regulator_reg_init; i++) { - int id; - u8 value; + int id, value; id = pdata->regulator_reg_init[i].id; value = pdata->regulator_reg_init[i].value; @@ -745,73 +825,17 @@ static __devinit int ab8500_regulator_probe(struct platform_device *pdev) "Configuration error: id outside range.\n"); return -EINVAL; } - if (value & ~ab8500_reg_init[id].mask) { - dev_err(&pdev->dev, - "Configuration error: value outside mask.\n"); - return -EINVAL; - } - /* initialize register */ - err = abx500_mask_and_set_register_interruptible(&pdev->dev, - ab8500_reg_init[id].bank, - ab8500_reg_init[id].addr, - ab8500_reg_init[id].mask, - value); - if (err < 0) { - dev_err(&pdev->dev, - "Failed to initialize 0x%02x, 0x%02x.\n", - ab8500_reg_init[id].bank, - ab8500_reg_init[id].addr); + err = ab8500_regulator_init_registers(pdev, id, value); + if (err < 0) return err; - } - dev_vdbg(&pdev->dev, - " init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", - ab8500_reg_init[id].bank, - ab8500_reg_init[id].addr, - ab8500_reg_init[id].mask, - value); } /* register all regulators */ for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) { - struct ab8500_regulator_info *info = NULL; - - /* assign per-regulator data */ - info = &ab8500_regulator_info[i]; - info->dev = &pdev->dev; - - config.dev = &pdev->dev; - config.init_data = &pdata->regulator[i]; - config.driver_data = info; - - /* fix for hardware before ab8500v2.0 */ - if (abx500_get_chip_id(info->dev) < 0x20) { - if (info->desc.id == AB8500_LDO_AUX3) { - info->desc.n_voltages = - ARRAY_SIZE(ldo_vauxn_voltages); - info->voltages = ldo_vauxn_voltages; - info->voltages_len = - ARRAY_SIZE(ldo_vauxn_voltages); - info->voltage_mask = 0xf; - } - } - - /* register regulator with framework */ - info->regulator = regulator_register(&info->desc, &config); - if (IS_ERR(info->regulator)) { - err = PTR_ERR(info->regulator); - dev_err(&pdev->dev, "failed to register regulator %s\n", - info->desc.name); - /* when we fail, un-register all earlier regulators */ - while (--i >= 0) { - info = &ab8500_regulator_info[i]; - regulator_unregister(info->regulator); - } + err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL); + if (err < 0) return err; - } - - dev_vdbg(rdev_get_dev(info->regulator), - "%s-probed\n", info->desc.name); } return 0; |