From mboxrd@z Thu Jan 1 00:00:00 1970 From: jtzhou@marvell.com (Jett.Zhou) Date: Thu, 21 Jun 2012 14:18:58 +0800 Subject: [V2 1/3] regulator: add pre-regulator support for 88pm860x Message-ID: <1340259538-24239-1-git-send-email-jtzhou@marvell.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Pre-regulator of 88pm8606 is mainly for support charging based on vbus, it needs to be enabled for charging battery, and will be disabled in some exception condition like over-temp. Signed-off-by: Jett.Zhou --- drivers/mfd/88pm860x-core.c | 23 ++++++++++++++ drivers/regulator/88pm8607.c | 66 ++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/88pm860x.h | 1 + 3 files changed, 90 insertions(+), 0 deletions(-) diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c index 87bd5ba..508aca5 100644 --- a/drivers/mfd/88pm860x-core.c +++ b/drivers/mfd/88pm860x-core.c @@ -90,6 +90,10 @@ static struct resource charger_resources[] __devinitdata = { {PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage", IORESOURCE_IRQ,}, }; +static struct resource preg_resources[] __devinitdata = { + {PM8606_ID_PREG, PM8606_ID_PREG, "preg", IORESOURCE_IO,}, +}; + static struct resource rtc_resources[] __devinitdata = { {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,}, }; @@ -142,9 +146,19 @@ static struct mfd_cell codec_devs[] = { {"88pm860x-codec", -1,}, }; +static struct regulator_consumer_supply preg_supply[] = { + REGULATOR_SUPPLY("preg", NULL), +}; + +static struct regulator_init_data preg_init_data = { + .num_consumer_supplies = 1, + .consumer_supplies = &preg_supply[0], +}; + static struct mfd_cell power_devs[] = { {"88pm860x-battery", -1,}, {"88pm860x-charger", -1,}, + {"88pm860x-preg", -1,}, }; static struct mfd_cell rtc_devs[] = { @@ -768,6 +782,15 @@ static void __devinit device_power_init(struct pm860x_chip *chip, &charger_resources[0], chip->irq_base); if (ret < 0) dev_err(chip->dev, "Failed to add charger subdev\n"); + + power_devs[2].platform_data = &preg_init_data; + power_devs[2].pdata_size = sizeof(struct regulator_init_data); + power_devs[2].num_resources = ARRAY_SIZE(preg_resources); + power_devs[2].resources = &preg_resources[0], + ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1, + &preg_resources[0], chip->irq_base); + if (ret < 0) + dev_err(chip->dev, "Failed to add preg subdev\n"); } static void __devinit device_onkey_init(struct pm860x_chip *chip, diff --git a/drivers/regulator/88pm8607.c b/drivers/regulator/88pm8607.c index c3482b9..3c81fd0 100644 --- a/drivers/regulator/88pm8607.c +++ b/drivers/regulator/88pm8607.c @@ -23,6 +23,7 @@ struct pm8607_regulator_info { struct pm860x_chip *chip; struct regulator_dev *regulator; struct i2c_client *i2c; + struct i2c_client *i2c_8606; unsigned int *vol_table; unsigned int *vol_suspend; @@ -242,6 +243,35 @@ static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) return ret; } +static int pm8606_preg_enable(struct regulator_dev *rdev) +{ + struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); + + return pm860x_set_bits(info->i2c, rdev->desc->enable_reg, + 1 << rdev->desc->enable_mask, 0); +} + +static int pm8606_preg_disable(struct regulator_dev *rdev) +{ + struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); + + return pm860x_set_bits(info->i2c, rdev->desc->enable_reg, + 1 << rdev->desc->enable_mask, + 1 << rdev->desc->enable_mask); +} + +static int pm8606_preg_is_enabled(struct regulator_dev *rdev) +{ + struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); + int ret; + + ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg); + if (ret < 0) + return ret; + + return !((unsigned char)ret & (1 << rdev->desc->enable_mask)); +} + static struct regulator_ops pm8607_regulator_ops = { .list_voltage = pm8607_list_voltage, .set_voltage_sel = pm8607_set_voltage_sel, @@ -251,6 +281,25 @@ static struct regulator_ops pm8607_regulator_ops = { .is_enabled = regulator_is_enabled_regmap, }; +static struct regulator_ops pm8606_preg_ops = { + .enable = pm8606_preg_enable, + .disable = pm8606_preg_disable, + .is_enabled = pm8606_preg_is_enabled, +}; + +#define PM8606_PREG(ereg, ebit) \ +{ \ + .desc = { \ + .name = "PREG", \ + .ops = &pm8606_preg_ops, \ + .type = REGULATOR_CURRENT, \ + .id = PM8606_ID_PREG, \ + .owner = THIS_MODULE, \ + .enable_reg = PM8606_##ereg, \ + .enable_mask = (ebit), \ + }, \ +} + #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \ { \ .desc = { \ @@ -309,6 +358,8 @@ static struct pm8607_regulator_info pm8607_regulator_info[] = { PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5), PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0), PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6), + + PM8606_PREG(PREREGULATORB, 5), }; static int __devinit pm8607_regulator_probe(struct platform_device *pdev) @@ -336,6 +387,8 @@ static int __devinit pm8607_regulator_probe(struct platform_device *pdev) return -EINVAL; } info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; + info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion : + chip->client; info->chip = chip; /* check DVC ramp slope double */ @@ -372,6 +425,18 @@ static int __devexit pm8607_regulator_remove(struct platform_device *pdev) return 0; } +static struct platform_device_id pm8607_regulator_driver_ids[] = { + { + .name = "88pm860x-regulator", + .driver_data = 0, + }, { + .name = "88pm860x-preg", + .driver_data = 0, + }, + { }, +}; +MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids); + static struct platform_driver pm8607_regulator_driver = { .driver = { .name = "88pm860x-regulator", @@ -379,6 +444,7 @@ static struct platform_driver pm8607_regulator_driver = { }, .probe = pm8607_regulator_probe, .remove = __devexit_p(pm8607_regulator_remove), + .id_table = pm8607_regulator_driver_ids, }; static int __init pm8607_regulator_init(void) diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h index 84d071a..7b24943 100644 --- a/include/linux/mfd/88pm860x.h +++ b/include/linux/mfd/88pm860x.h @@ -136,6 +136,7 @@ enum { PM8607_ID_LDO13, PM8607_ID_LDO14, PM8607_ID_LDO15, + PM8606_ID_PREG, PM8607_ID_RG_MAX, }; -- 1.7.0.4