Message ID | 1250052476-28763-1-git-send-email-anuj.aggarwal@ti.com (mailing list archive) |
---|---|
State | Awaiting Upstream, archived |
Headers | show |
On Wed, Aug 12, 2009 at 10:17:56AM +0530, Anuj Aggarwal wrote: > Adding support for TI TPS65023 regulator driver > > Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> Looks good. Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, 2009-08-12 at 10:17 +0530, Anuj Aggarwal wrote: > Adding support for TI TPS65023 regulator driver > > Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> > --- > drivers/regulator/tps65023-regulator.c | 638 ++++++++++++++++++++++++++++++++ > 1 files changed, 638 insertions(+), 0 deletions(-) > create mode 100644 drivers/regulator/tps65023-regulator.c > > diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c > new file mode 100644 > index 0000000..dbaf295 > --- /dev/null > +++ b/drivers/regulator/tps65023-regulator.c > @@ -0,0 +1,638 @@ > +/* > + * tps65023-regulator.c > + * > + * Supports TPS65023 Regulator > + * > + * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License as > + * published by the Free Software Foundation version 2. > + * > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, > + * whether express or implied; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + * General Public License for more details. > + */ > + > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/init.h> > +#include <linux/err.h> > +#include <linux/platform_device.h> > +#include <linux/regulator/driver.h> > +#include <linux/regulator/machine.h> > +#include <linux/i2c.h> > +#include <linux/delay.h> > + > +/* Register definitions */ > +#define TPS65023_REG_VERSION 0 > +#define TPS65023_REG_PGOODZ 1 > +#define TPS65023_REG_MASK 2 > +#define TPS65023_REG_REG_CTRL 3 > +#define TPS65023_REG_CON_CTRL 4 > +#define TPS65023_REG_CON_CTRL2 5 > +#define TPS65023_REG_DEF_CORE 6 > +#define TPS65023_REG_DEFSLEW 7 > +#define TPS65023_REG_LDO_CTRL 8 > + > +/* PGOODZ bitfields */ > +#define TPS65023_PGOODZ_PWRFAILZ BIT(7) > +#define TPS65023_PGOODZ_LOWBATTZ BIT(6) > +#define TPS65023_PGOODZ_VDCDC1 BIT(5) > +#define TPS65023_PGOODZ_VDCDC2 BIT(4) > +#define TPS65023_PGOODZ_VDCDC3 BIT(3) > +#define TPS65023_PGOODZ_LDO2 BIT(2) > +#define TPS65023_PGOODZ_LDO1 BIT(1) > + > +/* MASK bitfields */ > +#define TPS65023_MASK_PWRFAILZ BIT(7) > +#define TPS65023_MASK_LOWBATTZ BIT(6) > +#define TPS65023_MASK_VDCDC1 BIT(5) > +#define TPS65023_MASK_VDCDC2 BIT(4) > +#define TPS65023_MASK_VDCDC3 BIT(3) > +#define TPS65023_MASK_LDO2 BIT(2) > +#define TPS65023_MASK_LDO1 BIT(1) > + > +/* REG_CTRL bitfields */ > +#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5) > +#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4) > +#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3) > +#define TPS65023_REG_CTRL_LDO2_EN BIT(2) > +#define TPS65023_REG_CTRL_LDO1_EN BIT(1) > + > +/* LDO_CTRL bitfields */ > +#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4) > +#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4)) > + > +/* Number of step-down converters available */ > +#define TPS65023_NUM_DCDC 3 > +/* Number of LDO voltage regulators available */ > +#define TPS65023_NUM_LDO 2 > +/* Number of total regulators available */ > +#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) > + > +/* DCDCs */ > +#define TPS65023_DCDC_1 0 > +#define TPS65023_DCDC_2 1 > +#define TPS65023_DCDC_3 2 > +/* LDOs */ > +#define TPS65023_LDO_1 3 > +#define TPS65023_LDO_2 4 > + > +#define TPS65023_MAX_REG_ID TPS65023_LDO_2 > + > +/* Supported voltage values for regulators */ > +static const u16 VDCDC1_VSEL_table[] = { > + 800, 825, 850, 875, > + 900, 925, 950, 975, > + 1000, 1025, 1050, 1075, > + 1100, 1125, 1150, 1175, > + 1200, 1225, 1250, 1275, > + 1300, 1325, 1350, 1375, > + 1400, 1425, 1450, 1475, > + 1500, 1525, 1550, 1600, > +}; > + > +static const u16 LDO1_VSEL_table[] = { > + 1000, 1100, 1300, 1800, > + 2200, 2600, 2800, 3150, > +}; > + > +static const u16 LDO2_VSEL_table[] = { > + 1050, 1200, 1300, 1800, > + 2500, 2800, 3000, 3300, > +}; > + > +static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table), > + 0, 0, ARRAY_SIZE(LDO1_VSEL_table), > + ARRAY_SIZE(LDO2_VSEL_table)}; > + > +/* Regulator specific details */ > +struct tps_info { > + const char *name; > + unsigned min_uV; > + unsigned max_uV; > + bool fixed; > + u8 table_len; > + const u16 *table; > +}; > + > +/* PMIC details */ > +struct tps_pmic { > + struct regulator_desc desc[TPS65023_NUM_REGULATOR]; > + struct i2c_client *client; > + struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; > + const struct tps_info *info[TPS65023_NUM_REGULATOR]; > + struct mutex io_lock; > +}; > + > +static inline int tps_65023_read(struct tps_pmic *tps, u8 reg) > +{ > + return i2c_smbus_read_byte_data(tps->client, reg); > +} > + > +static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val) > +{ > + return i2c_smbus_write_byte_data(tps->client, reg, val); > +} > + > +static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) > +{ > + int err; > + u8 data; > + > + mutex_lock(&tps->io_lock); > + > + data = tps_65023_read(tps, reg); > + if (data < 0) { data can never be less than 0 as it's unsigned. > + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); > + err = data; > + goto out; > + } > + > + data |= mask; > + err = tps_65023_write(tps, reg, data); > + if (err) > + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); > + > +out: > + mutex_unlock(&tps->io_lock); > + return err; > +} > + > +static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) > +{ > + int err; > + u8 data; > + > + mutex_lock(&tps->io_lock); > + > + data = tps_65023_read(tps, reg); > + if (data < 0) { ditto. > + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); > + err = data; > + goto out; > + } > + > + data &= ~mask; > + > + err = tps_65023_write(tps, reg, data); > + if (err) > + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); > + > +out: > + mutex_unlock(&tps->io_lock); > + return err; > + > +} > + > +static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg) > +{ > + u8 data; > + > + mutex_lock(&tps->io_lock); > + > + data = tps_65023_read(tps, reg); > + if (data < 0) > + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); > + ditto > + mutex_unlock(&tps->io_lock); > + return data; > +} > + > +static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val) > +{ > + int err; > + > + mutex_lock(&tps->io_lock); > + > + err = tps_65023_write(tps, reg, val); > + if (err < 0) > + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); > + > + mutex_unlock(&tps->io_lock); > + return err; > +} > + > +static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) > +{ > + u8 data; > + struct tps_pmic *tps = rdev_get_drvdata(dev); > + int dcdc = rdev_get_id(dev); > + u8 shift; > + > + if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) > + return -EINVAL; > + > + shift = TPS65023_NUM_REGULATOR - dcdc; > + data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); > + > + if (data >= 0) { > + data &= (1 << shift); > + return data ? 1 : 0; > + } else > + return data; data always >=0 here. > +} > + > +static int tps65023_ldo_is_enabled(struct regulator_dev *dev) > +{ > + struct tps_pmic *tps = rdev_get_drvdata(dev); > + int ldo = rdev_get_id(dev); > + u8 shift; > + u8 data; > + > + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > + return -EINVAL; > + > + shift = (ldo == TPS65023_LDO_1 ? 1 : 2); > + data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); > + > + if (data >= 0) { > + data &= (1 << shift); > + return data ? 1 : 0; > + } else > + return data; ditto. A few more unsigned data comparisons in this file. Please fix. There is also trailing white space in this patch. Please use scripts/cleanfile to remove trailing white space. Thanks Liam -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2009/8/12 Anuj Aggarwal <anuj.aggarwal@ti.com>: > Adding support for TI TPS65023 regulator driver > > Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> > --- >  drivers/regulator/tps65023-regulator.c |  638 ++++++++++++++++++++++++++++++++ >  1 files changed, 638 insertions(+), 0 deletions(-) >  create mode 100644 drivers/regulator/tps65023-regulator.c > > diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c > new file mode 100644 > index 0000000..dbaf295 > --- /dev/null > +++ b/drivers/regulator/tps65023-regulator.c > @@ -0,0 +1,638 @@ > +/* > + * tps65023-regulator.c > + * > + * Supports TPS65023 Regulator > + * > + * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License as > + * published by the Free Software Foundation version 2. > + * > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, > + * whether express or implied; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU > + * General Public License for more details. > + */ > + > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/init.h> > +#include <linux/err.h> > +#include <linux/platform_device.h> > +#include <linux/regulator/driver.h> > +#include <linux/regulator/machine.h> > +#include <linux/i2c.h> > +#include <linux/delay.h> > + > +/* Register definitions */ > +#define     TPS65023_REG_VERSION       0 > +#define     TPS65023_REG_PGOODZ       1 > +#define     TPS65023_REG_MASK        2 > +#define     TPS65023_REG_REG_CTRL      3 > +#define     TPS65023_REG_CON_CTRL      4 > +#define     TPS65023_REG_CON_CTRL2      5 > +#define     TPS65023_REG_DEF_CORE      6 > +#define     TPS65023_REG_DEFSLEW       7 > +#define     TPS65023_REG_LDO_CTRL      8 > + > +/* PGOODZ bitfields */ > +#define     TPS65023_PGOODZ_PWRFAILZ     BIT(7) > +#define     TPS65023_PGOODZ_LOWBATTZ     BIT(6) > +#define     TPS65023_PGOODZ_VDCDC1      BIT(5) > +#define     TPS65023_PGOODZ_VDCDC2      BIT(4) > +#define     TPS65023_PGOODZ_VDCDC3      BIT(3) > +#define     TPS65023_PGOODZ_LDO2       BIT(2) > +#define     TPS65023_PGOODZ_LDO1       BIT(1) > + > +/* MASK bitfields */ > +#define     TPS65023_MASK_PWRFAILZ      BIT(7) > +#define     TPS65023_MASK_LOWBATTZ      BIT(6) > +#define     TPS65023_MASK_VDCDC1       BIT(5) > +#define     TPS65023_MASK_VDCDC2       BIT(4) > +#define     TPS65023_MASK_VDCDC3       BIT(3) > +#define     TPS65023_MASK_LDO2        BIT(2) > +#define     TPS65023_MASK_LDO1        BIT(1) > + > +/* REG_CTRL bitfields */ > +#define TPS65023_REG_CTRL_VDCDC1_EN   BIT(5) > +#define TPS65023_REG_CTRL_VDCDC2_EN   BIT(4) > +#define TPS65023_REG_CTRL_VDCDC3_EN   BIT(3) > +#define TPS65023_REG_CTRL_LDO2_EN    BIT(2) > +#define TPS65023_REG_CTRL_LDO1_EN    BIT(1) > + > +/* LDO_CTRL bitfields */ > +#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id)  ((ldo_id)*4) > +#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id)   (0xF0 >> ((ldo_id)*4)) > + > +/* Number of step-down converters available */ > +#define TPS65023_NUM_DCDC        3 > +/* Number of LDO voltage regulators  available */ > +#define TPS65023_NUM_LDO        2 > +/* Number of total regulators available */ > +#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) > + > +/* DCDCs */ > +#define TPS65023_DCDC_1             0 > +#define TPS65023_DCDC_2             1 > +#define TPS65023_DCDC_3             2 > +/* LDOs */ > +#define TPS65023_LDO_1         3 > +#define TPS65023_LDO_2         4 > + > +#define TPS65023_MAX_REG_ID       TPS65023_LDO_2 > + > +/* Supported voltage values for regulators */ > +static const u16 VDCDC1_VSEL_table[] = { > +    800, 825, 850, 875, > +    900, 925, 950, 975, > +    1000, 1025, 1050, 1075, > +    1100, 1125, 1150, 1175, > +    1200, 1225, 1250, 1275, > +    1300, 1325, 1350, 1375, > +    1400, 1425, 1450, 1475, > +    1500, 1525, 1550, 1600, > +}; > + > +static const u16 LDO1_VSEL_table[] = { > +    1000, 1100, 1300, 1800, > +    2200, 2600, 2800, 3150, > +}; > + > +static const u16 LDO2_VSEL_table[] = { > +    1050, 1200, 1300, 1800, > +    2500, 2800, 3000, 3300, > +}; > + > +static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table), > +                0, 0, ARRAY_SIZE(LDO1_VSEL_table), > +                ARRAY_SIZE(LDO2_VSEL_table)}; > + > +/* Regulator specific details */ > +struct tps_info { > +    const char *name; > +    unsigned min_uV; > +    unsigned max_uV; > +    bool fixed; > +    u8 table_len; > +    const u16 *table; > +}; > + > +/* PMIC details */ > +struct tps_pmic { > +    struct regulator_desc desc[TPS65023_NUM_REGULATOR]; > +    struct i2c_client *client; > +    struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; > +    const struct tps_info *info[TPS65023_NUM_REGULATOR]; > +    struct mutex io_lock; > +}; > + > +static inline int tps_65023_read(struct tps_pmic *tps, u8 reg) > +{ > +    return i2c_smbus_read_byte_data(tps->client, reg); > +} > + > +static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val) > +{ > +    return i2c_smbus_write_byte_data(tps->client, reg, val); > +} > + > +static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) > +{ > +    int err; > +    u8 data; > + > +    mutex_lock(&tps->io_lock); > + > +    data = tps_65023_read(tps, reg); > +    if (data < 0) { > +        dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); > +        err = data; > +        goto out; > +    } > + > +    data |= mask; > +    err = tps_65023_write(tps, reg, data); > +    if (err) > +        dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); > + > +out: > +    mutex_unlock(&tps->io_lock); > +    return err; > +} > + > +static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) > +{ > +    int err; > +    u8 data; > + > +    mutex_lock(&tps->io_lock); > + > +    data = tps_65023_read(tps, reg); > +    if (data < 0) { > +        dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); > +        err = data; > +        goto out; > +    } > + > +    data &= ~mask; > + > +    err = tps_65023_write(tps, reg, data); > +    if (err) > +        dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); > + > +out: > +    mutex_unlock(&tps->io_lock); > +    return err; > + > +} > + > +static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg) > +{ > +    u8 data; > + > +    mutex_lock(&tps->io_lock); > + > +    data = tps_65023_read(tps, reg); > +    if (data < 0) > +        dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); > + > +    mutex_unlock(&tps->io_lock); > +    return data; > +} > + > +static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val) > +{ > +    int err; > + > +    mutex_lock(&tps->io_lock); > + > +    err = tps_65023_write(tps, reg, val); > +    if (err < 0) > +        dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); > + > +    mutex_unlock(&tps->io_lock); > +    return err; > +} > + > +static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) > +{ > +    u8 data; > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int dcdc = rdev_get_id(dev); > +    u8 shift; > + > +    if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) > +        return -EINVAL; > + > +    shift = TPS65023_NUM_REGULATOR - dcdc; > +    data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); > + > +    if (data >= 0) { > +        data &= (1 << shift); > +        return data ? 1 : 0; > +    } else > +        return data; > +} > + > +static int tps65023_ldo_is_enabled(struct regulator_dev *dev) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int ldo = rdev_get_id(dev); > +    u8 shift; > +    u8 data; > + > +    if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > +        return -EINVAL; > + > +    shift = (ldo == TPS65023_LDO_1 ? 1 : 2); > +    data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); > + > +    if (data >= 0) { > +        data &= (1 << shift); > +        return data ? 1 : 0; > +    } else > +        return data; > +} > + > +static int tps65023_dcdc_enable(struct regulator_dev *dev) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int dcdc = rdev_get_id(dev); > +    u8 shift; > + > +    if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) > +        return -EINVAL; > + > +    shift = TPS65023_NUM_REGULATOR - dcdc; > +    return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); > +} > + > +static int tps65023_dcdc_disable(struct regulator_dev *dev) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int dcdc = rdev_get_id(dev); > +    u8 shift; > + > +    if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) > +        return -EINVAL; > + > +    shift = TPS65023_NUM_REGULATOR - dcdc; > +    return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); > +} > + > +static int tps65023_ldo_enable(struct regulator_dev *dev) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int ldo = rdev_get_id(dev); > +    u8 shift; > + > +    if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > +        return -EINVAL; > + > +    shift = (ldo == TPS65023_LDO_1 ? 1 : 2); > +    return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); > +} > + > +static int tps65023_ldo_disable(struct regulator_dev *dev) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int ldo = rdev_get_id(dev); > +    u8 shift; > + > +    if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > +        return -EINVAL; > + > +    shift = (ldo == TPS65023_LDO_1 ? 1 : 2); > +    return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); > +} > + > +static int tps65023_dcdc_get_voltage(struct regulator_dev *dev) > +{ > +    u8 data; > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int dcdc = rdev_get_id(dev); > + > +    if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) > +        return -EINVAL; > + > +    if (dcdc == TPS65023_DCDC_1) { > +        data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE); > +        if (data < 0) > +            return data; > +        data &= (tps->info[dcdc]->table_len - 1); > +        return tps->info[dcdc]->table[data] * 1000; > +    } else > +        return tps->info[dcdc]->min_uV; > +} > + > +static int tps65023_dcdc_set_voltage(struct regulator_dev *dev, > +                int min_uV, int max_uV) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int dcdc = rdev_get_id(dev); > +    int vsel; > + > +    if (dcdc != TPS65023_DCDC_1) > +        return -EINVAL; > + > +    if (min_uV < tps->info[dcdc]->min_uV > +            || min_uV > tps->info[dcdc]->max_uV) > +        return -EINVAL; > +    if (max_uV < tps->info[dcdc]->min_uV > +            || max_uV > tps->info[dcdc]->max_uV) > +        return -EINVAL; > + > +    for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { > +        int mV = tps->info[dcdc]->table[vsel]; > +        int uV = mV * 1000; > + > +        /* Break at the first in-range value */ > +        if (min_uV <= uV && uV <= max_uV) > +            break; > +    } > + > +    /* write to the register in case we found a match */ > +    if (vsel == tps->info[dcdc]->table_len) > +        return -EINVAL; > +    else > +        return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel); > +} > + > +static int tps65023_ldo_get_voltage(struct regulator_dev *dev) > +{ > +    u8 data; > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int ldo = rdev_get_id(dev); > + > +    if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > +        return -EINVAL; > + > +    data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); > +    if (data < 0) > +        return data; > + > +    data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)); > +    data &= (tps->info[ldo]->table_len - 1); > +    return tps->info[ldo]->table[data] * 1000; > +} > + > +static int tps65023_ldo_set_voltage(struct regulator_dev *dev, > +                int min_uV, int max_uV) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int ldo = rdev_get_id(dev); > +    int vsel; > +    u8 data; > + > +    if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > +        return -EINVAL; > + > +    if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) > +        return -EINVAL; > +    if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) > +        return -EINVAL; > + > +    for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { > +        int mV = tps->info[ldo]->table[vsel]; > +        int uV = mV * 1000; > + > +        /* Break at the first in-range value */ > +        if (min_uV <= uV && uV <= max_uV) > +            break; > +    } > + > +    if (vsel == tps->info[ldo]->table_len) > +        return -EINVAL; > + > +    data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); > +    if (data < 0) > +        return data; > + > +    data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1); > +    data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1))); > +    return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data); > +} > + > +static int tps65023_dcdc_list_voltage(struct regulator_dev *dev, > +                    unsigned selector) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int dcdc = rdev_get_id(dev); > + > +    if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) > +        return -EINVAL; > + > +    if (dcdc == TPS65023_DCDC_1) { > +        if (selector >= tps->info[dcdc]->table_len) > +            return -EINVAL; > +        else > +            return tps->info[dcdc]->table[selector] * 1000; > +    } else > +        return tps->info[dcdc]->min_uV; > +} > + > +static int tps65023_ldo_list_voltage(struct regulator_dev *dev, > +                    unsigned selector) > +{ > +    struct tps_pmic *tps = rdev_get_drvdata(dev); > +    int ldo = rdev_get_id(dev); > + > +    if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) > +        return -EINVAL; > + > +    if (selector >= tps->info[ldo]->table_len) > +        return -EINVAL; > +    else > +        return tps->info[ldo]->table[selector] * 1000; > +} > + > +/* Operations permitted on VDCDCx */ > +static struct regulator_ops tps65023_dcdc_ops = { > +    .is_enabled = tps65023_dcdc_is_enabled, > +    .enable = tps65023_dcdc_enable, > +    .disable = tps65023_dcdc_disable, > +    .get_voltage = tps65023_dcdc_get_voltage, > +    .set_voltage = tps65023_dcdc_set_voltage, > +    .list_voltage = tps65023_dcdc_list_voltage, > +}; > + > +/* Operations permitted on LDOx */ > +static struct regulator_ops tps65023_ldo_ops = { > +    .is_enabled = tps65023_ldo_is_enabled, > +    .enable = tps65023_ldo_enable, > +    .disable = tps65023_ldo_disable, > +    .get_voltage = tps65023_ldo_get_voltage, > +    .set_voltage = tps65023_ldo_set_voltage, > +    .list_voltage = tps65023_ldo_list_voltage, > +}; > + > +static > +int tps_65023_probe(struct i2c_client *client, const struct i2c_device_id *id) > +{ > +    static int desc_id; > +    const struct tps_info *info = (void *)id->driver_data; > +    struct regulator_init_data *init_data; > +    struct regulator_dev *rdev; > +    struct tps_pmic *tps; > +    int i; > + > +    if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) > +        return -EIO; > + > +    /** > +     * init_data points to array of regulator_init structures > +     * coming from the board-evm file. > +     */ > +    init_data = client->dev.platform_data; > + > +    if (!init_data) > +        return -EIO; > + > +    tps = kzalloc(sizeof(*tps), GFP_KERNEL); > +    if (!tps) > +        return -ENOMEM; > + > +    tps->client = client; > + > +    for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) { > +        /* Store regulator specific information */ > +        tps->info[i] = info; > + > +        tps->desc[i].name = info->name; > +        tps->desc[i].id = desc_id++; > +        tps->desc[i].n_voltages = num_voltages[i]; > +        tps->desc[i].ops = (i > TPS65023_DCDC_3 ? > +                    &tps65023_ldo_ops : &tps65023_dcdc_ops); > +        tps->desc[i].type = REGULATOR_VOLTAGE; > +        tps->desc[i].owner = THIS_MODULE; > + > +        /* Register the regulators */ > +        rdev = regulator_register(&tps->desc[i], &client->dev, > +                                init_data, tps); > +        if (IS_ERR(rdev)) { > +            dev_err(&client->dev, "failed to register %s\n", > +                id->name); > + > +            /* Unregister */ > +            while (i) > +                regulator_unregister(tps->rdev[--i]); > + > +            tps->client = NULL; > + > +            /* clear the client data in i2c */ > +            i2c_set_clientdata(client, NULL); You haven't yet set the clientdata at this point, so it is already NULL. So this is unnecessary. > +            kfree(tps); > +            return PTR_ERR(rdev); > +        } > + > +        /* Save regulator for cleanup */ > +        tps->rdev[i] = rdev; > +    } > + > +    i2c_set_clientdata(client, tps); > + > +    return 0; > +} > + > +/** > + * tps_65023_remove - TPS65023 driver i2c remove handler > + * @client: i2c driver client device structure > + * > + * Unregister TPS driver as an i2c client device driver > + */ > +static int __devexit tps_65023_remove(struct i2c_client *client) > +{ > +    struct tps_pmic *tps = i2c_get_clientdata(client); > +    int i; > + > +    for (i = 0; i < TPS65023_NUM_REGULATOR; i++) > +        regulator_unregister(tps->rdev[i]); > + > +    tps->client = NULL; > + > +    /* clear the client data in i2c */ > +    i2c_set_clientdata(client, NULL); > +    kfree(tps); > + > +    return 0; > +} > + > +static const struct tps_info tps65023_regs[] = { > +    { > +        .name = "VDCDC1", > +        .min_uV =  800000, > +        .max_uV = 1600000, > +        .table_len = ARRAY_SIZE(VDCDC1_VSEL_table), > +        .table = VDCDC1_VSEL_table, > +    }, > +    { > +        .name = "VDCDC2", > +        .min_uV =  3300000, > +        .max_uV = 3300000, > +        .fixed = 1, > +    }, > +    { > +        .name = "VDCDC3", > +        .min_uV =  1800000, > +        .max_uV = 1800000, > +        .fixed = 1, > +    }, > +    { > +        .name = "LDO1", > +        .min_uV = 1000000, > +        .max_uV = 3150000, > +        .table_len = ARRAY_SIZE(LDO1_VSEL_table), > +        .table = LDO1_VSEL_table, > +    }, > +    { > +        .name = "LDO2", > +        .min_uV = 1050000, > +        .max_uV = 3300000, > +        .table_len = ARRAY_SIZE(LDO2_VSEL_table), > +        .table = LDO2_VSEL_table, > +    }, > +}; > + > +static const struct i2c_device_id tps_65023_id = { > +    .name = "tps65023", > +    .driver_data = (unsigned long) &tps65023_regs[0], > +}; > + > +MODULE_DEVICE_TABLE(i2c, tps_65023_id); > + > +static struct i2c_driver tps_65023_i2c_driver = { > +    .driver = { > +        .name = "tps65023", > +        .owner = THIS_MODULE, > +    }, > +    .probe = tps_65023_probe, > +    .remove = __devexit_p(tps_65023_remove), > +    .id_table = &tps_65023_id, > +}; > + > +/** > + * tps_65023_init > + * > + * Module init function > + */ > +static int __init tps_65023_init(void) > +{ > +    return i2c_add_driver(&tps_65023_i2c_driver); > +} > +subsys_initcall(tps_65023_init); > + > +/** > + * tps_65023_cleanup > + * > + * Module exit function > + */ > +static void __exit tps_65023_cleanup(void) > +{ > +    i2c_del_driver(&tps_65023_i2c_driver); > +} > +module_exit(tps_65023_cleanup); > + > +MODULE_AUTHOR("Texas Instruments"); > +MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); > +MODULE_LICENSE("GPLv2"); > -- > 1.6.2.4 Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c new file mode 100644 index 0000000..dbaf295 --- /dev/null +++ b/drivers/regulator/tps65023-regulator.c @@ -0,0 +1,638 @@ +/* + * tps65023-regulator.c + * + * Supports TPS65023 Regulator + * + * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, + * whether express or implied; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/i2c.h> +#include <linux/delay.h> + +/* Register definitions */ +#define TPS65023_REG_VERSION 0 +#define TPS65023_REG_PGOODZ 1 +#define TPS65023_REG_MASK 2 +#define TPS65023_REG_REG_CTRL 3 +#define TPS65023_REG_CON_CTRL 4 +#define TPS65023_REG_CON_CTRL2 5 +#define TPS65023_REG_DEF_CORE 6 +#define TPS65023_REG_DEFSLEW 7 +#define TPS65023_REG_LDO_CTRL 8 + +/* PGOODZ bitfields */ +#define TPS65023_PGOODZ_PWRFAILZ BIT(7) +#define TPS65023_PGOODZ_LOWBATTZ BIT(6) +#define TPS65023_PGOODZ_VDCDC1 BIT(5) +#define TPS65023_PGOODZ_VDCDC2 BIT(4) +#define TPS65023_PGOODZ_VDCDC3 BIT(3) +#define TPS65023_PGOODZ_LDO2 BIT(2) +#define TPS65023_PGOODZ_LDO1 BIT(1) + +/* MASK bitfields */ +#define TPS65023_MASK_PWRFAILZ BIT(7) +#define TPS65023_MASK_LOWBATTZ BIT(6) +#define TPS65023_MASK_VDCDC1 BIT(5) +#define TPS65023_MASK_VDCDC2 BIT(4) +#define TPS65023_MASK_VDCDC3 BIT(3) +#define TPS65023_MASK_LDO2 BIT(2) +#define TPS65023_MASK_LDO1 BIT(1) + +/* REG_CTRL bitfields */ +#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5) +#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4) +#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3) +#define TPS65023_REG_CTRL_LDO2_EN BIT(2) +#define TPS65023_REG_CTRL_LDO1_EN BIT(1) + +/* LDO_CTRL bitfields */ +#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4) +#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4)) + +/* Number of step-down converters available */ +#define TPS65023_NUM_DCDC 3 +/* Number of LDO voltage regulators available */ +#define TPS65023_NUM_LDO 2 +/* Number of total regulators available */ +#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) + +/* DCDCs */ +#define TPS65023_DCDC_1 0 +#define TPS65023_DCDC_2 1 +#define TPS65023_DCDC_3 2 +/* LDOs */ +#define TPS65023_LDO_1 3 +#define TPS65023_LDO_2 4 + +#define TPS65023_MAX_REG_ID TPS65023_LDO_2 + +/* Supported voltage values for regulators */ +static const u16 VDCDC1_VSEL_table[] = { + 800, 825, 850, 875, + 900, 925, 950, 975, + 1000, 1025, 1050, 1075, + 1100, 1125, 1150, 1175, + 1200, 1225, 1250, 1275, + 1300, 1325, 1350, 1375, + 1400, 1425, 1450, 1475, + 1500, 1525, 1550, 1600, +}; + +static const u16 LDO1_VSEL_table[] = { + 1000, 1100, 1300, 1800, + 2200, 2600, 2800, 3150, +}; + +static const u16 LDO2_VSEL_table[] = { + 1050, 1200, 1300, 1800, + 2500, 2800, 3000, 3300, +}; + +static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table), + 0, 0, ARRAY_SIZE(LDO1_VSEL_table), + ARRAY_SIZE(LDO2_VSEL_table)}; + +/* Regulator specific details */ +struct tps_info { + const char *name; + unsigned min_uV; + unsigned max_uV; + bool fixed; + u8 table_len; + const u16 *table; +}; + +/* PMIC details */ +struct tps_pmic { + struct regulator_desc desc[TPS65023_NUM_REGULATOR]; + struct i2c_client *client; + struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; + const struct tps_info *info[TPS65023_NUM_REGULATOR]; + struct mutex io_lock; +}; + +static inline int tps_65023_read(struct tps_pmic *tps, u8 reg) +{ + return i2c_smbus_read_byte_data(tps->client, reg); +} + +static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val) +{ + return i2c_smbus_write_byte_data(tps->client, reg, val); +} + +static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) +{ + int err; + u8 data; + + mutex_lock(&tps->io_lock); + + data = tps_65023_read(tps, reg); + if (data < 0) { + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + err = data; + goto out; + } + + data |= mask; + err = tps_65023_write(tps, reg, data); + if (err) + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + +out: + mutex_unlock(&tps->io_lock); + return err; +} + +static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) +{ + int err; + u8 data; + + mutex_lock(&tps->io_lock); + + data = tps_65023_read(tps, reg); + if (data < 0) { + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + err = data; + goto out; + } + + data &= ~mask; + + err = tps_65023_write(tps, reg, data); + if (err) + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + +out: + mutex_unlock(&tps->io_lock); + return err; + +} + +static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg) +{ + u8 data; + + mutex_lock(&tps->io_lock); + + data = tps_65023_read(tps, reg); + if (data < 0) + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + + mutex_unlock(&tps->io_lock); + return data; +} + +static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val) +{ + int err; + + mutex_lock(&tps->io_lock); + + err = tps_65023_write(tps, reg, val); + if (err < 0) + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + + mutex_unlock(&tps->io_lock); + return err; +} + +static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) +{ + u8 data; + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + u8 shift; + + if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) + return -EINVAL; + + shift = TPS65023_NUM_REGULATOR - dcdc; + data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); + + if (data >= 0) { + data &= (1 << shift); + return data ? 1 : 0; + } else + return data; +} + +static int tps65023_ldo_is_enabled(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + u8 shift; + u8 data; + + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) + return -EINVAL; + + shift = (ldo == TPS65023_LDO_1 ? 1 : 2); + data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); + + if (data >= 0) { + data &= (1 << shift); + return data ? 1 : 0; + } else + return data; +} + +static int tps65023_dcdc_enable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + u8 shift; + + if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) + return -EINVAL; + + shift = TPS65023_NUM_REGULATOR - dcdc; + return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); +} + +static int tps65023_dcdc_disable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + u8 shift; + + if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) + return -EINVAL; + + shift = TPS65023_NUM_REGULATOR - dcdc; + return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); +} + +static int tps65023_ldo_enable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + u8 shift; + + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) + return -EINVAL; + + shift = (ldo == TPS65023_LDO_1 ? 1 : 2); + return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); +} + +static int tps65023_ldo_disable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + u8 shift; + + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) + return -EINVAL; + + shift = (ldo == TPS65023_LDO_1 ? 1 : 2); + return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); +} + +static int tps65023_dcdc_get_voltage(struct regulator_dev *dev) +{ + u8 data; + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + + if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) + return -EINVAL; + + if (dcdc == TPS65023_DCDC_1) { + data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE); + if (data < 0) + return data; + data &= (tps->info[dcdc]->table_len - 1); + return tps->info[dcdc]->table[data] * 1000; + } else + return tps->info[dcdc]->min_uV; +} + +static int tps65023_dcdc_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + int vsel; + + if (dcdc != TPS65023_DCDC_1) + return -EINVAL; + + if (min_uV < tps->info[dcdc]->min_uV + || min_uV > tps->info[dcdc]->max_uV) + return -EINVAL; + if (max_uV < tps->info[dcdc]->min_uV + || max_uV > tps->info[dcdc]->max_uV) + return -EINVAL; + + for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { + int mV = tps->info[dcdc]->table[vsel]; + int uV = mV * 1000; + + /* Break at the first in-range value */ + if (min_uV <= uV && uV <= max_uV) + break; + } + + /* write to the register in case we found a match */ + if (vsel == tps->info[dcdc]->table_len) + return -EINVAL; + else + return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel); +} + +static int tps65023_ldo_get_voltage(struct regulator_dev *dev) +{ + u8 data; + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) + return -EINVAL; + + data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); + if (data < 0) + return data; + + data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)); + data &= (tps->info[ldo]->table_len - 1); + return tps->info[ldo]->table[data] * 1000; +} + +static int tps65023_ldo_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + int vsel; + u8 data; + + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) + return -EINVAL; + + if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) + return -EINVAL; + if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) + return -EINVAL; + + for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { + int mV = tps->info[ldo]->table[vsel]; + int uV = mV * 1000; + + /* Break at the first in-range value */ + if (min_uV <= uV && uV <= max_uV) + break; + } + + if (vsel == tps->info[ldo]->table_len) + return -EINVAL; + + data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); + if (data < 0) + return data; + + data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1); + data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1))); + return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data); +} + +static int tps65023_dcdc_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + + if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) + return -EINVAL; + + if (dcdc == TPS65023_DCDC_1) { + if (selector >= tps->info[dcdc]->table_len) + return -EINVAL; + else + return tps->info[dcdc]->table[selector] * 1000; + } else + return tps->info[dcdc]->min_uV; +} + +static int tps65023_ldo_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + + if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) + return -EINVAL; + + if (selector >= tps->info[ldo]->table_len) + return -EINVAL; + else + return tps->info[ldo]->table[selector] * 1000; +} + +/* Operations permitted on VDCDCx */ +static struct regulator_ops tps65023_dcdc_ops = { + .is_enabled = tps65023_dcdc_is_enabled, + .enable = tps65023_dcdc_enable, + .disable = tps65023_dcdc_disable, + .get_voltage = tps65023_dcdc_get_voltage, + .set_voltage = tps65023_dcdc_set_voltage, + .list_voltage = tps65023_dcdc_list_voltage, +}; + +/* Operations permitted on LDOx */ +static struct regulator_ops tps65023_ldo_ops = { + .is_enabled = tps65023_ldo_is_enabled, + .enable = tps65023_ldo_enable, + .disable = tps65023_ldo_disable, + .get_voltage = tps65023_ldo_get_voltage, + .set_voltage = tps65023_ldo_set_voltage, + .list_voltage = tps65023_ldo_list_voltage, +}; + +static +int tps_65023_probe(struct i2c_client *client, const struct i2c_device_id *id) +{ + static int desc_id; + const struct tps_info *info = (void *)id->driver_data; + struct regulator_init_data *init_data; + struct regulator_dev *rdev; + struct tps_pmic *tps; + int i; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + /** + * init_data points to array of regulator_init structures + * coming from the board-evm file. + */ + init_data = client->dev.platform_data; + + if (!init_data) + return -EIO; + + tps = kzalloc(sizeof(*tps), GFP_KERNEL); + if (!tps) + return -ENOMEM; + + tps->client = client; + + for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) { + /* Store regulator specific information */ + tps->info[i] = info; + + tps->desc[i].name = info->name; + tps->desc[i].id = desc_id++; + tps->desc[i].n_voltages = num_voltages[i]; + tps->desc[i].ops = (i > TPS65023_DCDC_3 ? + &tps65023_ldo_ops : &tps65023_dcdc_ops); + tps->desc[i].type = REGULATOR_VOLTAGE; + tps->desc[i].owner = THIS_MODULE; + + /* Register the regulators */ + rdev = regulator_register(&tps->desc[i], &client->dev, + init_data, tps); + if (IS_ERR(rdev)) { + dev_err(&client->dev, "failed to register %s\n", + id->name); + + /* Unregister */ + while (i) + regulator_unregister(tps->rdev[--i]); + + tps->client = NULL; + + /* clear the client data in i2c */ + i2c_set_clientdata(client, NULL); + kfree(tps); + return PTR_ERR(rdev); + } + + /* Save regulator for cleanup */ + tps->rdev[i] = rdev; + } + + i2c_set_clientdata(client, tps); + + return 0; +} + +/** + * tps_65023_remove - TPS65023 driver i2c remove handler + * @client: i2c driver client device structure + * + * Unregister TPS driver as an i2c client device driver + */ +static int __devexit tps_65023_remove(struct i2c_client *client) +{ + struct tps_pmic *tps = i2c_get_clientdata(client); + int i; + + for (i = 0; i < TPS65023_NUM_REGULATOR; i++) + regulator_unregister(tps->rdev[i]); + + tps->client = NULL; + + /* clear the client data in i2c */ + i2c_set_clientdata(client, NULL); + kfree(tps); + + return 0; +} + +static const struct tps_info tps65023_regs[] = { + { + .name = "VDCDC1", + .min_uV = 800000, + .max_uV = 1600000, + .table_len = ARRAY_SIZE(VDCDC1_VSEL_table), + .table = VDCDC1_VSEL_table, + }, + { + .name = "VDCDC2", + .min_uV = 3300000, + .max_uV = 3300000, + .fixed = 1, + }, + { + .name = "VDCDC3", + .min_uV = 1800000, + .max_uV = 1800000, + .fixed = 1, + }, + { + .name = "LDO1", + .min_uV = 1000000, + .max_uV = 3150000, + .table_len = ARRAY_SIZE(LDO1_VSEL_table), + .table = LDO1_VSEL_table, + }, + { + .name = "LDO2", + .min_uV = 1050000, + .max_uV = 3300000, + .table_len = ARRAY_SIZE(LDO2_VSEL_table), + .table = LDO2_VSEL_table, + }, +}; + +static const struct i2c_device_id tps_65023_id = { + .name = "tps65023", + .driver_data = (unsigned long) &tps65023_regs[0], +}; + +MODULE_DEVICE_TABLE(i2c, tps_65023_id); + +static struct i2c_driver tps_65023_i2c_driver = { + .driver = { + .name = "tps65023", + .owner = THIS_MODULE, + }, + .probe = tps_65023_probe, + .remove = __devexit_p(tps_65023_remove), + .id_table = &tps_65023_id, +}; + +/** + * tps_65023_init + * + * Module init function + */ +static int __init tps_65023_init(void) +{ + return i2c_add_driver(&tps_65023_i2c_driver); +} +subsys_initcall(tps_65023_init); + +/** + * tps_65023_cleanup + * + * Module exit function + */ +static void __exit tps_65023_cleanup(void) +{ + i2c_del_driver(&tps_65023_i2c_driver); +} +module_exit(tps_65023_cleanup); + +MODULE_AUTHOR("Texas Instruments"); +MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); +MODULE_LICENSE("GPLv2");
Adding support for TI TPS65023 regulator driver Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> --- drivers/regulator/tps65023-regulator.c | 638 ++++++++++++++++++++++++++++++++ 1 files changed, 638 insertions(+), 0 deletions(-) create mode 100644 drivers/regulator/tps65023-regulator.c