diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/Kconfig | 27 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 3 | ||||
| -rw-r--r-- | drivers/regulator/core.c | 38 | ||||
| -rw-r--r-- | drivers/regulator/gpio-regulator.c | 100 | ||||
| -rw-r--r-- | drivers/regulator/tps51632-regulator.c | 332 | ||||
| -rw-r--r-- | drivers/regulator/tps65090-regulator.c | 247 | ||||
| -rw-r--r-- | drivers/regulator/tps80031-regulator.c | 793 | ||||
| -rw-r--r-- | drivers/regulator/vexpress.c | 147 |
8 files changed, 1611 insertions, 76 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 67d47b59a66d..0ae658f048e2 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -335,6 +335,17 @@ config REGULATOR_PALMAS on the muxing. This is handled automatically in the driver by reading the mux info from OTP. +config REGULATOR_TPS51632 + tristate "TI TPS51632 Power Regulator" + depends on I2C + select REGMAP_I2C + help + This driver supports TPS51632 voltage regulator chip. + The TPS51632 is 3-2-1 Phase D-Cap+ Step Down Driverless Controller + with Serial VID control and DVFS. + The voltage output can be configure through I2C interface or PWM + interface. + config REGULATOR_TPS6105X tristate "TI TPS6105X Power regulators" depends on TPS6105X @@ -415,6 +426,15 @@ config REGULATOR_TPS65912 help This driver supports TPS65912 voltage regulator chip. +config REGULATOR_TPS80031 + tristate "TI TPS80031/TPS80032 power regualtor driver" + depends on MFD_TPS80031 + help + TPS80031/ TPS80032 Fully Integrated Power Management with Power + Path and Battery Charger. It has 5 configurable step-down + converters, 11 general purpose LDOs, VBUS generator and digital + output to control regulators. + config REGULATOR_TWL4030 bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 PMIC" depends on TWL4030_CORE @@ -422,6 +442,13 @@ config REGULATOR_TWL4030 This driver supports the voltage regulators provided by this family of companion chips. +config REGULATOR_VEXPRESS + tristate "Versatile Express regulators" + depends on VEXPRESS_CONFIG + help + This driver provides support for voltage regulators available + on the ARM Ltd's Versatile Express platform. + config REGULATOR_WM831X tristate "Wolfson Microelectronics WM831x PMIC regulators" depends on MFD_WM831X diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index e431eed8a878..6166d122d125 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o +obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o @@ -56,7 +57,9 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o +obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o +obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 5c4829cba6a6..3db1e011d229 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1381,22 +1381,14 @@ struct regulator *regulator_get_exclusive(struct device *dev, const char *id) } EXPORT_SYMBOL_GPL(regulator_get_exclusive); -/** - * regulator_put - "free" the regulator source - * @regulator: regulator source - * - * Note: drivers must ensure that all regulator_enable calls made on this - * regulator source are balanced by regulator_disable calls prior to calling - * this function. - */ -void regulator_put(struct regulator *regulator) +/* Locks held by regulator_put() */ +static void _regulator_put(struct regulator *regulator) { struct regulator_dev *rdev; if (regulator == NULL || IS_ERR(regulator)) return; - mutex_lock(®ulator_list_mutex); rdev = regulator->rdev; debugfs_remove_recursive(regulator->debugfs); @@ -1412,6 +1404,20 @@ void regulator_put(struct regulator *regulator) rdev->exclusive = 0; module_put(rdev->owner); +} + +/** + * regulator_put - "free" the regulator source + * @regulator: regulator source + * + * Note: drivers must ensure that all regulator_enable calls made on this + * regulator source are balanced by regulator_disable calls prior to calling + * this function. + */ +void regulator_put(struct regulator *regulator) +{ + mutex_lock(®ulator_list_mutex); + _regulator_put(regulator); mutex_unlock(®ulator_list_mutex); } EXPORT_SYMBOL_GPL(regulator_put); @@ -1974,11 +1980,16 @@ int regulator_is_supported_voltage(struct regulator *regulator, if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { ret = regulator_get_voltage(regulator); if (ret >= 0) - return (min_uV >= ret && ret <= max_uV); + return (min_uV <= ret && ret <= max_uV); else return ret; } + /* Any voltage within constrains range is fine? */ + if (rdev->desc->continuous_voltage_range) + return min_uV >= rdev->constraints->min_uV && + max_uV <= rdev->constraints->max_uV; + ret = regulator_count_voltages(regulator); if (ret < 0) return ret; @@ -3365,7 +3376,7 @@ regulator_register(const struct regulator_desc *regulator_desc, if (ret != 0) { rdev_err(rdev, "Failed to request enable GPIO%d: %d\n", config->ena_gpio, ret); - goto clean; + goto wash; } rdev->ena_gpio = config->ena_gpio; @@ -3445,10 +3456,11 @@ unset_supplies: scrub: if (rdev->supply) - regulator_put(rdev->supply); + _regulator_put(rdev->supply); if (rdev->ena_gpio) gpio_free(rdev->ena_gpio); kfree(rdev->constraints); +wash: device_unregister(&rdev->dev); /* device core frees rdev */ rdev = ERR_PTR(ret); diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c index 8b5944f2d7d1..dc9260545b80 100644 --- a/drivers/regulator/gpio-regulator.c +++ b/drivers/regulator/gpio-regulator.c @@ -28,9 +28,12 @@ #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> #include <linux/regulator/gpio-regulator.h> #include <linux/gpio.h> #include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_gpio.h> struct gpio_regulator_data { struct regulator_desc desc; @@ -129,6 +132,89 @@ static struct regulator_ops gpio_regulator_voltage_ops = { .list_voltage = gpio_regulator_list_voltage, }; +struct gpio_regulator_config * +of_get_gpio_regulator_config(struct device *dev, struct device_node *np) +{ + struct gpio_regulator_config *config; + struct property *prop; + const char *regtype; + int proplen, gpio, i; + + config = devm_kzalloc(dev, + sizeof(struct gpio_regulator_config), + GFP_KERNEL); + if (!config) + return ERR_PTR(-ENOMEM); + + config->init_data = of_get_regulator_init_data(dev, np); + if (!config->init_data) + return ERR_PTR(-EINVAL); + + config->supply_name = config->init_data->constraints.name; + + if (of_property_read_bool(np, "enable-active-high")) + config->enable_high = true; + + if (of_property_read_bool(np, "enable-at-boot")) + config->enabled_at_boot = true; + + of_property_read_u32(np, "startup-delay-us", &config->startup_delay); + + config->enable_gpio = of_get_named_gpio(np, "enable-gpio", 0); + + /* Fetch GPIOs. */ + for (i = 0; ; i++) + if (of_get_named_gpio(np, "gpios", i) < 0) + break; + config->nr_gpios = i; + + config->gpios = devm_kzalloc(dev, + sizeof(struct gpio) * config->nr_gpios, + GFP_KERNEL); + if (!config->gpios) + return ERR_PTR(-ENOMEM); + + for (i = 0; config->nr_gpios; i++) { + gpio = of_get_named_gpio(np, "gpios", i); + if (gpio < 0) + break; + config->gpios[i].gpio = gpio; + } + + /* Fetch states. */ + prop = of_find_property(np, "states", NULL); + if (!prop) { + dev_err(dev, "No 'states' property found\n"); + return ERR_PTR(-EINVAL); + } + + proplen = prop->length / sizeof(int); + + config->states = devm_kzalloc(dev, + sizeof(struct gpio_regulator_state) + * (proplen / 2), + GFP_KERNEL); + if (!config->states) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < proplen / 2; i++) { + config->states[i].value = + be32_to_cpup((int *)prop->value + (i * 2)); + config->states[i].gpios = + be32_to_cpup((int *)prop->value + (i * 2 + 1)); + } + config->nr_states = i; + + of_property_read_string(np, "regulator-type", ®type); + + if (!strncmp("voltage", regtype, 7)) + config->type = REGULATOR_VOLTAGE; + else if (!strncmp("current", regtype, 7)) + config->type = REGULATOR_CURRENT; + + return config; +} + static struct regulator_ops gpio_regulator_current_ops = { .get_current_limit = gpio_regulator_get_value, .set_current_limit = gpio_regulator_set_current_limit, @@ -137,10 +223,17 @@ static struct regulator_ops gpio_regulator_current_ops = { static int __devinit gpio_regulator_probe(struct platform_device *pdev) { struct gpio_regulator_config *config = pdev->dev.platform_data; + struct device_node *np = pdev->dev.of_node; struct gpio_regulator_data *drvdata; struct regulator_config cfg = { }; int ptr, ret, state; + if (np) { + config = of_get_gpio_regulator_config(&pdev->dev, np); + if (IS_ERR(config)) + return PTR_ERR(config); + } + drvdata = devm_kzalloc(&pdev->dev, sizeof(struct gpio_regulator_data), GFP_KERNEL); if (drvdata == NULL) { @@ -215,6 +308,7 @@ static int __devinit gpio_regulator_probe(struct platform_device *pdev) cfg.dev = &pdev->dev; cfg.init_data = config->init_data; cfg.driver_data = drvdata; + cfg.of_node = np; if (config->enable_gpio >= 0) cfg.ena_gpio = config->enable_gpio; @@ -270,12 +364,18 @@ static int __devexit gpio_regulator_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id regulator_gpio_of_match[] __devinitconst = { + { .compatible = "regulator-gpio", }, + {}, +}; + static struct platform_driver gpio_regulator_driver = { .probe = gpio_regulator_probe, .remove = __devexit_p(gpio_regulator_remove), .driver = { .name = "gpio-regulator", .owner = THIS_MODULE, + .of_match_table = regulator_gpio_of_match, }, }; diff --git a/drivers/regulator/tps51632-regulator.c b/drivers/regulator/tps51632-regulator.c new file mode 100644 index 000000000000..34603640d6d9 --- /dev/null +++ b/drivers/regulator/tps51632-regulator.c @@ -0,0 +1,332 @@ +/* + * tps51632-regulator.c -- TI TPS51632 + * + * Regulator driver for TPS51632 3-2-1 Phase D-Cap Step Down Driverless + * Controller with serial VID control and DVFS. + * + * Copyright (c) 2012, NVIDIA Corporation. + * + * Author: Laxman Dewangan <ldewangan@nvidia.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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/tps51632-regulator.h> +#include <linux/slab.h> + +/* Register definitions */ +#define TPS51632_VOLTAGE_SELECT_REG 0x0 +#define TPS51632_VOLTAGE_BASE_REG 0x1 +#define TPS51632_OFFSET_REG 0x2 +#define TPS51632_IMON_REG 0x3 +#define TPS51632_VMAX_REG 0x4 +#define TPS51632_DVFS_CONTROL_REG 0x5 +#define TPS51632_POWER_STATE_REG 0x6 +#define TPS51632_SLEW_REGS 0x7 +#define TPS51632_FAULT_REG 0x14 + +#define TPS51632_MAX_REG 0x15 + +#define TPS51632_VOUT_MASK 0x7F +#define TPS51632_VOUT_OFFSET_MASK 0x1F +#define TPS51632_VMAX_MASK 0x7F +#define TPS51632_VMAX_LOCK 0x80 + +/* TPS51632_DVFS_CONTROL_REG */ +#define TPS51632_DVFS_PWMEN 0x1 +#define TPS51632_DVFS_STEP_20 0x2 +#define TPS51632_DVFS_VMAX_PG 0x4 +#define TPS51632_DVFS_PWMRST 0x8 +#define TPS51632_DVFS_OCA_EN 0x10 +#define TPS51632_DVFS_FCCM 0x20 + +/* TPS51632_POWER_STATE_REG */ +#define TPS51632_POWER_STATE_MASK 0x03 +#define TPS51632_POWER_STATE_MULTI_PHASE_CCM 0x0 +#define TPS51632_POWER_STATE_SINGLE_PHASE_CCM 0x1 +#define TPS51632_POWER_STATE_SINGLE_PHASE_DCM 0x2 + +#define TPS51632_MIN_VOLATGE 500000 +#define TPS51632_MAX_VOLATGE 1520000 +#define TPS51632_VOLATGE_STEP_10mV 10000 +#define TPS51632_VOLATGE_STEP_20mV 20000 +#define TPS51632_MAX_VSEL 0x7F +#define TPS51632_MIN_VSEL 0x19 +#define TPS51632_DEFAULT_RAMP_DELAY 6000 +#define TPS51632_VOLT_VSEL(uV) \ + (DIV_ROUND_UP(uV - TPS51632_MIN_VOLATGE, \ + TPS51632_VOLATGE_STEP_10mV) + \ + TPS51632_MIN_VSEL) + +/* TPS51632 chip information */ +struct tps51632_chip { + struct device *dev; + struct regulator_desc desc; + struct regulator_dev *rdev; + struct regmap *regmap; + bool enable_pwm_dvfs; +}; + +static int tps51632_dcdc_get_voltage_sel(struct regulator_dev *rdev) +{ + struct tps51632_chip *tps = rdev_get_drvdata(rdev); + unsigned int data; + int ret; + unsigned int reg = TPS51632_VOLTAGE_SELECT_REG; + int vsel; + + if (tps->enable_pwm_dvfs) + reg = TPS51632_VOLTAGE_BASE_REG; + + ret = regmap_read(tps->regmap, reg, &data); + if (ret < 0) { + dev_err(tps->dev, "reg read failed, err %d\n", ret); + return ret; + } + + vsel = data & TPS51632_VOUT_MASK; + + if (vsel < TPS51632_MIN_VSEL) + return 0; + else + return vsel - TPS51632_MIN_VSEL; +} + +static int tps51632_dcdc_set_voltage_sel(struct regulator_dev *rdev, + unsigned selector) +{ + struct tps51632_chip *tps = rdev_get_drvdata(rdev); + int vsel; + int ret; + unsigned int reg = TPS51632_VOLTAGE_SELECT_REG; + + if (tps->enable_pwm_dvfs) + reg = TPS51632_VOLTAGE_BASE_REG; + + vsel = selector + TPS51632_MIN_VSEL; + if (vsel > TPS51632_MAX_VSEL) + return -EINVAL; + + ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_SELECT_REG, vsel); + if (ret < 0) + dev_err(tps->dev, "reg write failed, err %d\n", ret); + return ret; +} + +static int tps51632_dcdc_set_ramp_delay(struct regulator_dev *rdev, + int ramp_delay) +{ + struct tps51632_chip *tps = rdev_get_drvdata(rdev); + int bit = ramp_delay/6000; + int ret; + + if (bit) + bit--; + ret = regmap_write(tps->regmap, TPS51632_SLEW_REGS, BIT(bit)); + if (ret < 0) + dev_err(tps->dev, "SLEW reg write failed, err %d\n", ret); + return ret; +} + +static struct regulator_ops tps51632_dcdc_ops = { + .get_voltage_sel = tps51632_dcdc_get_voltage_sel, + .set_voltage_sel = tps51632_dcdc_set_voltage_sel, + .list_voltage = regulator_list_voltage_linear, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_ramp_delay = tps51632_dcdc_set_ramp_delay, +}; + +static int __devinit tps51632_init_dcdc(struct tps51632_chip *tps, + struct tps51632_regulator_platform_data *pdata) +{ + int ret; + uint8_t control = 0; + int vsel; + + if (!pdata->enable_pwm_dvfs) + goto skip_pwm_config; + + control |= TPS51632_DVFS_PWMEN; + tps->enable_pwm_dvfs = pdata->enable_pwm_dvfs; + vsel = TPS51632_VOLT_VSEL(pdata->base_voltage_uV); + ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_BASE_REG, vsel); + if (ret < 0) { + dev_err(tps->dev, "BASE reg write failed, err %d\n", ret); + return ret; + } + + if (pdata->dvfs_step_20mV) + control |= TPS51632_DVFS_STEP_20; + + if (pdata->max_voltage_uV) { + unsigned int vmax; + /** + * TPS51632 hw behavior: VMAX register can be write only + * once as it get locked after first write. The lock get + * reset only when device is power-reset. + * Write register only when lock bit is not enabled. + */ + ret = regmap_read(tps->regmap, TPS51632_VMAX_REG, &vmax); + if (ret < 0) { + dev_err(tps->dev, "VMAX read failed, err %d\n", ret); + return ret; + } + if (!(vmax & TPS51632_VMAX_LOCK)) { + vsel = TPS51632_VOLT_VSEL(pdata->max_voltage_uV); + ret = regmap_write(tps->regmap, TPS51632_VMAX_REG, + vsel); + if (ret < 0) { + dev_err(tps->dev, + "VMAX write failed, err %d\n", ret); + return ret; + } + } + } + +skip_pwm_config: + ret = regmap_write(tps->regmap, TPS51632_DVFS_CONTROL_REG, control); + if (ret < 0) + dev_err(tps->dev, "DVFS reg write failed, err %d\n", ret); + return ret; +} + +static bool rd_wr_reg(struct device *dev, unsigned int reg) +{ + if ((reg >= 0x8) && (reg <= 0x10)) + return false; + return true; +} + +static const struct regmap_config tps51632_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .writeable_reg = rd_wr_reg, + .readable_reg = rd_wr_reg, + .max_register = TPS51632_MAX_REG - 1, + .cache_type = REGCACHE_RBTREE, +}; + +static int __devinit tps51632_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tps51632_regulator_platform_data *pdata; + struct regulator_dev *rdev; + struct tps51632_chip *tps; + int ret; + struct regulator_config config = { }; + + pdata = client->dev.platform_data; + if (!pdata) { + dev_err(&client->dev, "No Platform data\n"); + return -EINVAL; + } + + tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); + if (!tps) { + dev_err(&client->dev, "Memory allocation failed\n"); + return -ENOMEM; + } + + tps->dev = &client->dev; + tps->desc.name = id->name; + tps->desc.id = 0; + tps->desc.ramp_delay = TPS51632_DEFAULT_RAMP_DELAY; + tps->desc.min_uV = TPS51632_MIN_VOLATGE; + tps->desc.uV_step = TPS51632_VOLATGE_STEP_10mV; + tps->desc.n_voltages = (TPS51632_MAX_VSEL - TPS51632_MIN_VSEL) + 1; + tps->desc.ops = &tps51632_dcdc_ops; + tps->desc.type = REGULATOR_VOLTAGE; + tps->desc.owner = THIS_MODULE; + + tps->regmap = devm_regmap_init_i2c(client, &tps51632_regmap_config); + if (IS_ERR(tps->regmap)) { + ret = PTR_ERR(tps->regmap); + dev_err(&client->dev, "regmap init failed, err %d\n", ret); + return ret; + } + i2c_set_clientdata(client, tps); + + ret = tps51632_init_dcdc(tps, pdata); + if (ret < 0) { + dev_err(tps->dev, "Init failed, err = %d\n", ret); + return ret; + } + + /* Register the regulators */ + config.dev = &client->dev; + config.init_data = pdata->reg_init_data; + config.driver_data = tps; + config.regmap = tps->regmap; + config.of_node = client->dev.of_node; + + rdev = regulator_register(&tps->desc, &config); + if (IS_ERR(rdev)) { + dev_err(tps->dev, "regulator register failed\n"); + return PTR_ERR(rdev); + } + + tps->rdev = rdev; + return 0; +} + +static int __devexit tps51632_remove(struct i2c_client *client) +{ + struct tps51632_chip *tps = i2c_get_clientdata(client); + + regulator_unregister(tps->rdev); + return 0; +} + +static const struct i2c_device_id tps51632_id[] = { + {.name = "tps51632",}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, tps51632_id); + +static struct i2c_driver tps51632_i2c_driver = { + .driver = { + .name = "tps51632", + .owner = THIS_MODULE, + }, + .probe = tps51632_probe, + .remove = __devexit_p(tps51632_remove), + .id_table = tps51632_id, +}; + +static int __init tps51632_init(void) +{ + return i2c_add_driver(&tps51632_i2c_driver); +} +subsys_initcall(tps51632_init); + +static void __exit tps51632_cleanup(void) +{ + i2c_del_driver(&tps51632_i2c_driver); +} +module_exit(tps51632_cleanup); + +MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); +MODULE_DESCRIPTION("TPS51632 voltage regulator driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c index 001ad554ac62..412413838e12 100644 --- a/drivers/regulator/tps65090-regulator.c +++ b/drivers/regulator/tps65090-regulator.c @@ -18,67 +18,124 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/gpio.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/mfd/tps65090.h> -#include <linux/regulator/tps65090-regulator.h> struct tps65090_regulator { - int id; - /* used by regulator core */ - struct regulator_desc desc; - - /* Device */ struct device *dev; + struct regulator_desc *desc; + struct regulator_dev *rdev; +}; + +static struct regulator_ops tps65090_ext_control_ops = { +}; + +static struct regulator_ops tps65090_reg_contol_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, }; -static struct regulator_ops tps65090_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, +static struct regulator_ops tps65090_ldo_ops = { }; -#define tps65090_REG(_id) \ +#define tps65090_REG_DESC(_id, _sname, _en_reg, _ops) \ { \ - .id = TPS65090_ID_##_id, \ - .desc = { \ - .name = tps65090_rails(_id), \ - .id = TPS65090_ID_##_id, \ - .ops = &tps65090_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .enable_reg = (TPS65090_ID_##_id) + 12, \ - .enable_mask = BIT(0), \ - }, \ + .name = "TPS65090_RAILS"#_id, \ + .supply_name = _sname, \ + .id = TPS65090_REGULATOR_##_id, \ + .ops = &_ops, \ + .enable_reg = _en_reg, \ + .enable_mask = BIT(0), \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ } -static struct tps65090_regulator TPS65090_regulator[] = { - tps65090_REG(DCDC1), - tps65090_REG(DCDC2), - tps65090_REG(DCDC3), - tps65090_REG(FET1), - tps65090_REG(FET2), - tps65090_REG(FET3), - tps65090_REG(FET4), - tps65090_REG(FET5), - tps65090_REG(FET6), - tps65090_REG(FET7), +static struct regulator_desc tps65090_regulator_desc[] = { + tps65090_REG_DESC(DCDC1, "vsys1", 0x0C, tps65090_reg_contol_ops), + tps65090_REG_DESC(DCDC2, "vsys2", 0x0D, tps65090_reg_contol_ops), + tps65090_REG_DESC(DCDC3, "vsys3", 0x0E, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET1, "infet1", 0x0F, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET2, "infet2", 0x10, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET3, "infet3", 0x11, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET4, "infet4", 0x12, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET5, "infet5", 0x13, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET6, "infet6", 0x14, tps65090_reg_contol_ops), + tps65090_REG_DESC(FET7, "infet7", 0x15, tps65090_reg_contol_ops), + tps65090_REG_DESC(LDO1, "vsys_l1", 0, tps65090_ldo_ops), + tps65090_REG_DESC(LDO2, "vsys_l2", 0, tps65090_ldo_ops), }; -static inline struct tps65090_regulator *find_regulator_info(int id) +static inline bool is_dcdc(int id) { - struct tps65090_regulator *ri; - int i; + switch (id) { + case TPS65090_REGULATOR_DCDC1: + case TPS65090_REGULATOR_DCDC2: + case TPS65090_REGULATOR_DCDC3: + return true; + default: + return false; + } +} + +static int __devinit tps65090_config_ext_control( + struct tps65090_regulator *ri, bool enable) +{ + int ret; + struct device *parent = ri->dev->parent; + unsigned int reg_en_reg = ri->desc->enable_reg; + + if (enable) + ret = tps65090_set_bits(parent, reg_en_reg, 1); + else + ret = tps65090_clr_bits(parent, reg_en_reg, 1); + if (ret < 0) + dev_err(ri->dev, "Error in updating reg 0x%x\n", reg_en_reg); + return ret; +} + +static int __devinit tps65090_regulator_disable_ext_control( + struct tps65090_regulator *ri, + struct tps65090_regulator_plat_data *tps_pdata) +{ + int ret = 0; + struct device *parent = ri->dev->parent; + unsigned int reg_en_reg = ri->desc->enable_reg; + + /* + * First enable output for internal control if require. + * And then disable external control. + */ + if (tps_pdata->reg_init_data->constraints.always_on || + tps_pdata->reg_init_data->constraints.boot_on) { + ret = tps65090_set_bits(parent, reg_en_reg, 0); + if (ret < 0) { + dev_err(ri->dev, "Error in set reg 0x%x\n", reg_en_reg); + return ret; + } + } + return tps65090_config_ext_control(ri, false); +} + +static void __devinit tps65090_configure_regulator_config( + struct tps65090_regulator_plat_data *tps_pdata, + struct regulator_config *config) +{ + if (gpio_is_valid(tps_pdata->gpio)) { + int gpio_flag = GPIOF_OUT_INIT_LOW; + + if (tps_pdata->reg_init_data->constraints.always_on || + tps_pdata->reg_init_data->constraints.boot_on) + gpio_flag = GPIOF_OUT_INIT_HIGH; - for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) { - ri = &TPS65090_regulator[i]; - if (ri->desc.id == id) - return ri; + config->ena_gpio = tps_pdata->gpio; + config->ena_gpio_flags = gpio_flag; } - return NULL; } static int __devinit tps65090_regulator_probe(struct platform_device *pdev) @@ -87,46 +144,110 @@ static int __devinit tps65090_regulator_probe(struct platform_device *pdev) struct tps65090_regulator *ri = NULL; struct regulator_config config = { }; struct regulator_dev *rdev; - struct tps65090_regulator_platform_data *tps_pdata; - int id = pdev->id; + struct tps65090_regulator_plat_data *tps_pdata; + struct tps65090_regulator *pmic; + struct tps65090_platform_data *tps65090_pdata; + int num; + int ret; - dev_dbg(&pdev->dev, "Probing regulator %d\n", id); + dev_dbg(&pdev->dev, "Probing regulator\n"); - ri = find_regulator_info(id); - if (ri == NULL) { - dev_err(&pdev->dev, "invalid regulator ID specified\n"); + tps65090_pdata = dev_get_platdata(pdev->dev.parent); + if (!tps65090_pdata) { + dev_err(&pdev->dev, "Platform data missing\n"); return -EINVAL; } - tps_pdata = pdev->dev.platform_data; - ri->dev = &pdev->dev; - - config.dev = &pdev->dev; - config.init_data = &tps_pdata->regulator; - config.driver_data = ri; - config.regmap = tps65090_mfd->rmap; - - rdev = regulator_register(&ri->desc, &config); - if (IS_ERR(rdev)) { - dev_err(&pdev->dev, "failed to register regulator %s\n", - ri->desc.name); - return PTR_ERR(rdev); + + pmic = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX * sizeof(*pmic), + GFP_KERNEL); + if (!pmic) { + dev_err(&pdev->dev, "mem alloc for pmic failed\n"); + return -ENOMEM; + } + + for (num = 0; num < TPS65090_REGULATOR_MAX; num++) { + tps_pdata = tps65090_pdata->reg_pdata[num]; + + ri = &pmic[num]; + ri->dev = &pdev->dev; + ri->desc = &tps65090_regulator_desc[num]; + + /* + * TPS5090 DCDC support the control from external digital input. + * Configure it as per platform data. + */ + if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data) { + if (tps_pdata->enable_ext_control) { + tps65090_configure_regulator_config( + tps_pdata, &config); + ri->desc->ops = &tps65090_ext_control_ops; + } else { + ret = tps65090_regulator_disable_ext_control( + ri, tps_pdata); + if (ret < 0) { + dev_err(&pdev->dev, + "failed disable ext control\n"); + goto scrub; + } + } + } + + config.dev = &pdev->dev; + config.driver_data = ri; + config.regmap = tps65090_mfd->rmap; + if (tps_pdata) + config.init_data = tps_pdata->reg_init_data; + else + config.init_data = NULL; + + rdev = regulator_register(ri->desc, &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, "failed to register regulator %s\n", + ri->desc->name); + ret = PTR_ERR(rdev); + goto scrub; + } + ri->rdev = rdev; + + /* Enable external control if it is require */ + if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data && + tps_pdata->enable_ext_control) { + ret = tps65090_config_ext_control(ri, true); + if (ret < 0) { + /* Increment num to get unregister rdev */ + num++; + goto scrub; + } + } } - platform_set_drvdata(pdev, rdev); + platform_set_drvdata(pdev, pmic); return 0; + +scrub: + while (--num >= 0) { + ri = &pmic[num]; + regulator_unregister(ri->rdev); + } + return ret; } static int __devexit tps65090_regulator_remove(struct platform_device *pdev) { - struct regulator_dev *rdev = platform_get_drvdata(pdev); + struct tps65090_regulator *pmic = platform_get_drvdata(pdev); + struct tps65090_regulator *ri; + int num; - regulator_unregister(rdev); + for (num = 0; num < TPS65090_REGULATOR_MAX; ++num) { + ri = &pmic[num]; + regulator_unregister(ri->rdev); + } return 0; } static struct platform_driver tps65090_regulator_driver = { .driver = { - .name = "tps65090-regulator", + .name = "tps65090-pmic", .owner = THIS_MODULE, }, .probe = tps65090_regulator_probe, diff --git a/drivers/regulator/tps80031-regulator.c b/drivers/regulator/tps80031-regulator.c new file mode 100644 index 000000000000..a37ede80abbf --- /dev/null +++ b/drivers/regulator/tps80031-regulator.c @@ -0,0 +1,793 @@ +/* + * tps80031-regulator.c -- TI TPS80031 regulator driver. + * + * Regulator driver for TITPS80031/TPS80032 Fully Integrated Power + * Management with Power Path and Battery Charger. + * + * Copyright (c) 2012, NVIDIA Corporation. + * + * Author: Laxman Dewangan <ldewangan@nvidia.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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/mfd/tps80031.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/slab.h> + +/* Flags for DCDC Voltage reading */ +#define DCDC_OFFSET_EN BIT(0) +#define DCDC_EXTENDED_EN BIT(1) +#define TRACK_MODE_ENABLE BIT(2) + +#define SMPS_MULTOFFSET_VIO BIT(1) +#define SMPS_MULTOFFSET_SMPS1 BIT(3) +#define SMPS_MULTOFFSET_SMPS2 BIT(4) +#define SMPS_MULTOFFSET_SMPS3 BIT(6) +#define SMPS_MULTOFFSET_SMPS4 BIT(0) + +#define SMPS_CMD_MASK 0xC0 +#define SMPS_VSEL_MASK 0x3F +#define LDO_VSEL_MASK 0x1F +#define LDO_TRACK_VSEL_MASK 0x3F + +#define MISC2_LDOUSB_IN_VSYS BIT(4) +#define MISC2_LDOUSB_IN_PMID BIT(3) +#define MISC2_LDOUSB_IN_MASK 0x18 + +#define MISC2_LDO3_SEL_VIB_VAL BIT(0) +#define MISC2_LDO3_SEL_VIB_MASK 0x1 + +#define BOOST_HW_PWR_EN BIT(5) +#define BOOST_HW_PWR_EN_MASK BIT(5) + +#define OPA_MODE_EN BIT(6) +#define OPA_MODE_EN_MASK BIT(6) + +#define USB_VBUS_CTRL_SET 0x04 +#define USB_VBUS_CTRL_CLR 0x05 +#define VBUS_DISCHRG 0x20 + +struct tps80031_regulator_info { + /* Regulator register address.*/ + u8 trans_reg; + u8 state_reg; + u8 force_reg; + u8 volt_reg; + u8 volt_id; + + /*Power request bits */ + int preq_bit; + + /* used by regulator core */ + struct regulator_desc desc; + +}; + +struct tps80031_regulator { + struct device *dev; + struct regulator_dev *rdev; + struct tps80031_regulator_info *rinfo; + + u8 device_flags; + unsigned int config_flags; + unsigned int ext_ctrl_flag; +}; + +static inline struct device *to_tps80031_dev(struct regulator_dev *rdev) +{ + return rdev_get_dev(rdev)->parent->parent; +} + +static int tps80031_reg_is_enabled(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + u8 reg_val; + int ret; + + if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) + return true; + + ret = tps80031_read(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, + ®_val); + if (ret < 0) { + dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n", + ri->rinfo->state_reg, ret); + return ret; + } + return ((reg_val & TPS80031_STATE_MASK) == TPS80031_STATE_ON); +} + +static int tps80031_reg_enable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) + return 0; + + ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, + TPS80031_STATE_ON, TPS80031_STATE_MASK); + if (ret < 0) { + dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", + ri->rinfo->state_reg, ret); + return ret; + } + return ret; +} + +static int tps80031_reg_disable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) + return 0; + + ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, + TPS80031_STATE_OFF, TPS80031_STATE_MASK); + if (ret < 0) + dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", + ri->rinfo->state_reg, ret); + return ret; +} + +/* DCDC voltages for the selector of 58 to 63 */ +static int tps80031_dcdc_voltages[4][5] = { + { 1350, 1500, 1800, 1900, 2100}, + { 1350, 1500, 1800, 1900, 2100}, + { 2084, 2315, 2778, 2932, 3241}, + { 4167, 2315, 2778, 2932, 3241}, +}; + +static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + int volt_index = ri->device_flags & 0x3; + + if (sel == 0) + return 0; + else if (sel < 58) + return regulator_list_voltage_linear(rdev, sel - 1); + else + return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000; +} + +static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev, + unsigned vsel) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + u8 reg_val; + + if (ri->rinfo->force_reg) { + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->force_reg, ®_val); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + ri->rinfo->force_reg, ret); + return ret; + } + if (!(reg_val & SMPS_CMD_MASK)) { + ret = tps80031_update(parent, ri->rinfo->volt_id, + ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK); + if (ret < 0) + dev_err(ri->dev, + "reg 0x%02x update failed, e = %d\n", + ri->rinfo->force_reg, ret); + return ret; + } + } + ret = tps80031_update(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK); + if (ret < 0) + dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n", + ri->rinfo->volt_reg, ret); + return ret; +} + +static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + uint8_t vsel = 0; + int ret; + + if (ri->rinfo->force_reg) { + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->force_reg, &vsel); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + ri->rinfo->force_reg, ret); + return ret; + } + + if (!(vsel & SMPS_CMD_MASK)) + return vsel & SMPS_VSEL_MASK; + } + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, &vsel); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + ri->rinfo->volt_reg, ret); + return ret; + } + return vsel & SMPS_VSEL_MASK; +} + +static int tps80031_ldo_set_voltage_sel(struct regulator_dev *rdev, + unsigned sel) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */ + if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) && + (ri->device_flags & TRACK_MODE_ENABLE)) { + unsigned nvsel = (sel) & 0x1F; + if (((tps80031_get_chip_info(parent) == TPS80031) || + ((tps80031_get_chip_info(parent) == TPS80032) && + (tps80031_get_pmu_version(parent) == 0x0))) && + ((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) { + dev_err(ri->dev, + "Invalid sel %d in track mode LDO2\n", + nvsel); + return -EINVAL; + } + } + + ret = tps80031_write(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, sel); + if (ret < 0) + dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n", + ri->rinfo->volt_reg, ret); + return ret; +} + +static int tps80031_ldo_get_voltage_sel(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + uint8_t vsel; + int ret; + + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, &vsel); + if (ret < 0) { + dev_err(ri->dev, "Error in writing the Voltage register\n"); + return ret; + } + return vsel & rdev->desc->vsel_mask; +} + +static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, unsigned sel) +{ + if (sel == 0) + return 0; + else + return regulator_list_voltage_linear(rdev, sel - 1); +} + +static int tps80031_vbus_is_enabled(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret = -EIO; + uint8_t ctrl1 = 0; + uint8_t ctrl3 = 0; + + ret = tps80031_read(parent, TPS80031_SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL1, &ctrl1); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + ret = tps80031_read(parent, TPS80031_SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL3, &ctrl3); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN)) + return 1; + return ret; +} + +static int tps80031_vbus_enable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + + ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL3, ret); + return ret; + } + return ret; +} + +static int tps80031_vbus_disable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret = 0; + + if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) { + ret = tps80031_write(parent, TPS80031_SLAVE_ID2, + USB_VBUS_CTRL_SET, VBUS_DISCHRG); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", + USB_VBUS_CTRL_SET, ret); + return ret; + } + } + + ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + + ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL3, ret); + return ret; + } + + mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000)); + if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) { + ret = tps80031_write(parent, TPS80031_SLAVE_ID2, + USB_VBUS_CTRL_CLR, VBUS_DISCHRG); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", + USB_VBUS_CTRL_CLR, ret); + return ret; + } + } + return ret; +} + +static struct regulator_ops tps80031_dcdc_ops = { + .list_voltage = tps80031_dcdc_list_voltage, + .set_voltage_sel = tps80031_dcdc_set_voltage_sel, + .get_voltage_sel = tps80031_dcdc_get_voltage_sel, + .enable = tps80031_reg_enable, + .disable = tps80031_reg_disable, + .is_enabled = tps80031_reg_is_enabled, +}; + +static struct regulator_ops tps80031_ldo_ops = { + .list_voltage = tps80031_ldo_list_voltage, + .set_voltage_sel = tps80031_ldo_set_voltage_sel, + .get_voltage_sel = tps80031_ldo_get_voltage_sel, + .enable = tps80031_reg_enable, + .disable = tps80031_reg_disable, + .is_enabled = tps80031_reg_is_enabled, +}; + +static struct regulator_ops tps80031_vbus_sw_ops = { + .enable = tps80031_vbus_enable, + .disable = tps80031_vbus_disable, + .is_enabled = tps80031_vbus_is_enabled, +}; + +static struct regulator_ops tps80031_vbus_hw_ops = { +}; + +static struct regulator_ops tps80031_ext_reg_ops = { + .enable = tps80031_reg_enable, + .disable = tps80031_reg_disable, + .is_enabled = tps80031_reg_is_enabled, +}; + +/* Non-exiting default definition for some register */ +#define TPS80031_SMPS3_CFG_FORCE 0 +#define TPS80031_SMPS4_CFG_FORCE 0 + +#define TPS80031_VBUS_CFG_TRANS 0 +#define TPS80031_VBUS_CFG_STATE 0 + +#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \ +{ \ + .trans_reg = TPS80031_##_id##_CFG_TRANS, \ + .state_reg = TPS80031_##_id##_CFG_STATE, \ + .force_reg = TPS80031_##_id##_CFG_FORCE, \ + .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ + .volt_id = TPS80031_SLAVE_##_volt_id, \ + .preq_bit = _pbit, \ + .desc = { \ + .name = "tps80031_"#_id, \ + .id = TPS80031_REGULATOR_##_id, \ + .n_voltages = 63, \ + .ops = &tps80031_dcdc_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .enable_time = 500, \ + }, \ +} + +#define TPS80031_REG_LDO(_id, _preq_bit) \ +{ \ + .trans_reg = TPS80031_##_id##_CFG_TRANS, \ + .state_reg = TPS80031_##_id##_CFG_STATE, \ + .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ + .volt_id = TPS80031_SLAVE_ID1, \ + .preq_bit = _preq_bit, \ + .desc = { \ + .owner = THIS_MODULE, \ + .name = "tps80031_"#_id, \ + .id = TPS80031_REGULATOR_##_id, \ + .ops = &tps80031_ldo_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = 1000000, \ + .uV_step = 100000, \ + .n_voltages = 25, \ + .vsel_mask = LDO_VSEL_MASK, \ + .enable_time = 500, \ + }, \ +} + +#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \ +{ \ + .trans_reg = TPS80031_##_id##_CFG_TRANS, \ + .state_reg = TPS80031_##_id##_CFG_STATE, \ + .volt_id = TPS80031_SLAVE_ID1, \ + .preq_bit = _pbit, \ + .desc = { \ + .name = "tps80031_"#_id, \ + .id = TPS80031_REGULATOR_##_id, \ + .n_voltages = 2, \ + .ops = &_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .enable_time = _delay, \ + }, \ +} + +static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = { + TPS80031_REG_SMPS(VIO, ID0, 4), + TPS80031_REG_SMPS(SMPS1, ID0, 0), + TPS80031_REG_SMPS(SMPS2, ID0, 1), + TPS80031_REG_SMPS(SMPS3, ID1, 2), + TPS80031_REG_SMPS(SMPS4, ID1, 3), + TPS80031_REG_LDO(VANA, -1), + TPS80031_REG_LDO(LDO1, 8), + TPS80031_REG_LDO(LDO2, 9), + TPS80031_REG_LDO(LDO3, 10), + TPS80031_REG_LDO(LDO4, 11), + TPS80031_REG_LDO(LDO5, 12), + TPS80031_REG_LDO(LDO6, 13), + TPS80031_REG_LDO(LDO7, 14), + TPS80031_REG_LDO(LDOLN, 15), + TPS80031_REG_LDO(LDOUSB, 5), + TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1), + TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16), + TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17), + TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18), +}; + +static int tps80031_power_req_config(struct device *parent, + struct tps80031_regulator *ri, + struct tps80031_regulator_platform_data *tps80031_pdata) +{ + int ret = 0; + + if (ri->rinfo->preq_bit < 0) + goto skip_pwr_req_config; + + ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag, + ri->rinfo->preq_bit, ri->rinfo->state_reg, + ri->rinfo->trans_reg); + if (ret < 0) { + dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret); + return ret; + } + +skip_pwr_req_config: + if (tps80031_pdata->ext_ctrl_flag & TPS80031_PWR_ON_ON_SLEEP) { + ret = tps80031_update(parent, TPS80031_SLAVE_ID1, + ri->rinfo->trans_reg, TPS80031_TRANS_SLEEP_ON, + TPS80031_TRANS_SLEEP_MASK); + if (ret < 0) { + dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n", + ri->rinfo->trans_reg, ret); + return ret; + } + } + return ret; +} + +static int tps80031_regulator_config(struct device *parent, + struct tps80031_regulator *ri, + struct tps80031_regulator_platform_data *tps80031_pdata) +{ + int ret = 0; + + switch (ri->rinfo->desc.id) { + case TPS80031_REGULATOR_LDOUSB: + if (ri->config_flags & (TPS80031_USBLDO_INPUT_VSYS | + TPS80031_USBLDO_INPUT_PMID)) { + unsigned val = 0; + if (ri->config_flags & TPS80031_USBLDO_INPUT_VSYS) + val = MISC2_LDOUSB_IN_VSYS; + else + val = MISC2_LDOUSB_IN_PMID; + + ret = tps80031_update(parent, TPS80031_SLAVE_ID1, + TPS80031_MISC2, val, + MISC2_LDOUSB_IN_MASK); + if (ret < 0) { + dev_err(ri->dev, + "LDOUSB config failed, e= %d\n", ret); + return ret; + } + } + break; + + case TPS80031_REGULATOR_LDO3: + if (ri->config_flags & TPS80031_LDO3_OUTPUT_VIB) { + ret = tps80031_update(parent, TPS80031_SLAVE_ID1, + TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL, + MISC2_LDO3_SEL_VIB_MASK); + if (ret < 0) { + dev_err(ri->dev, + "LDO3 config failed, e = %d\n", ret); + return ret; + } + } + break; + + case TPS80031_REGULATOR_VBUS: + /* Provide SW control Ops if VBUS is SW control */ + if (!(ri->config_flags & TPS80031_VBUS_SW_ONLY)) + ri->rinfo->desc.ops = &tps80031_vbus_sw_ops; + break; + default: + break; + } + + /* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */ + ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->trans_reg, + TPS80031_TRANS_ACTIVE_ON | TPS80031_TRANS_SLEEP_OFF | + TPS80031_TRANS_OFF_OFF, TPS80031_TRANS_ACTIVE_MASK | + TPS80031_TRANS_SLEEP_MASK | TPS80031_TRANS_OFF_MASK); + if (ret < 0) { + dev_err(ri->dev, "trans reg update failed, e %d\n", ret); + return ret; + } + + return ret; +} + +static int check_smps_mode_mult(struct device *parent, + struct tps80031_regulator *ri) +{ + int mult_offset; + int ret; + u8 smps_offset; + u8 smps_mult; + + ret = tps80031_read(parent, TPS80031_SLAVE_ID1, + TPS80031_SMPS_OFFSET, &smps_offset); + if (ret < 0) { + dev_err(parent, "Error in reading smps offset register\n"); + return ret; + } + + ret = tps80031_read(parent, TPS80031_SLAVE_ID1, + TPS80031_SMPS_MULT, &smps_mult); + if (ret < 0) { + dev_err(parent, "Error in reading smps mult register\n"); + return ret; + } + + switch (ri->rinfo->desc.id) { + case TPS80031_REGULATOR_VIO: + mult_offset = SMPS_MULTOFFSET_VIO; + break; + case TPS80031_REGULATOR_SMPS1: + mult_offset = SMPS_MULTOFFSET_SMPS1; + break; + case TPS80031_REGULATOR_SMPS2: + mult_offset = SMPS_MULTOFFSET_SMPS2; + break; + case TPS80031_REGULATOR_SMPS3: + mult_offset = SMPS_MULTOFFSET_SMPS3; + break; + case TPS80031_REGULATOR_SMPS4: + mult_offset = SMPS_MULTOFFSET_SMPS4; + break; + case TPS80031_REGULATOR_LDO2: + ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0; + /* TRACK mode the ldo2 varies from 600mV to 1300mV */ + if (ri->device_flags & TRACK_MODE_ENABLE) { + ri->rinfo->desc.min_uV = 600000; + ri->rinfo->desc.uV_step = 12500; + ri->rinfo->desc.n_voltages = 57; + ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK; + } + return 0; + default: + return 0; + } + + ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0; + ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0; + switch (ri->device_flags) { + case 0: + ri->rinfo->desc.min_uV = 607700; + ri->rinfo->desc.uV_step = 12660; + break; + case DCDC_OFFSET_EN: + ri->rinfo->desc.min_uV = 700000; + ri->rinfo->desc.uV_step = 12500; + break; + case DCDC_EXTENDED_EN: + ri->rinfo->desc.min_uV = 1852000; + ri->rinfo->desc.uV_step = 38600; + break; + case DCDC_OFFSET_EN | DCDC_EXTENDED_EN: + ri->rinfo->desc.min_uV = 2161000; + ri->rinfo->desc.uV_step = 38600; + break; + } + return 0; +} + +static int __devinit tps80031_regulator_probe(struct platform_device *pdev) +{ + struct tps80031_platform_data *pdata; + struct tps80031_regulator_platform_data *tps_pdata; + struct tps80031_regulator_info *rinfo; + struct tps80031_regulator *ri; + struct tps80031_regulator *pmic; + struct regulator_dev *rdev; + struct regulator_config config = { }; + int ret; + int num; + + pdata = dev_get_platdata(pdev->dev.parent); + + if (!pdata) { + dev_err(&pdev->dev, "No platform data\n"); + return -EINVAL; + } + + pmic = devm_kzalloc(&pdev->dev, + TPS80031_REGULATOR_MAX * sizeof(*pmic), GFP_KERNEL); + if (!pmic) { + dev_err(&pdev->dev, "mem alloc for pmic failed\n"); + return -ENOMEM; + } + + for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { + tps_pdata = pdata->regulator_pdata[num]; + rinfo = &tps80031_rinfo[num]; + ri = &pmic[num]; + ri->rinfo = rinfo; + ri->dev = &pdev->dev; + + check_smps_mode_mult(pdev->dev.parent, ri); + config.dev = &pdev->dev; + config.init_data = NULL; + config.driver_data = ri; + if (tps_pdata) { + config.init_data = tps_pdata->reg_init_data; + ri->config_flags = tps_pdata->config_flags; + ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag; + ret = tps80031_regulator_config(pdev->dev.parent, + ri, tps_pdata); + if (ret < 0) { + dev_err(&pdev->dev, + "regulator config failed, e %d\n", ret); + goto fail; + } + + ret = tps80031_power_req_config(pdev->dev.parent, + ri, tps_pdata); + if (ret < 0) { + dev_err(&pdev->dev, + "pwr_req config failed, err %d\n", ret); + goto fail; + } + } + rdev = regulator_register(&ri->rinfo->desc, &config); + if (IS_ERR_OR_NULL(rdev)) { + dev_err(&pdev->dev, + "register regulator failed %s\n", + ri->rinfo->desc.name); + ret = PTR_ERR(rdev); + goto fail; + } + ri->rdev = rdev; + } + + platform_set_drvdata(pdev, pmic); + return 0; +fail: + while (--num >= 0) { + ri = &pmic[num]; + regulator_unregister(ri->rdev); + } + return ret; +} + +static int __devexit tps80031_regulator_remove(struct platform_device *pdev) +{ + struct tps80031_regulator *pmic = platform_get_drvdata(pdev); + struct tps80031_regulator *ri = NULL; + int num; + + for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { + ri = &pmic[num]; + regulator_unregister(ri->rdev); + } + return 0; +} + +static struct platform_driver tps80031_regulator_driver = { + .driver = { + .name = "tps80031-pmic", + .owner = THIS_MODULE, + }, + .probe = tps80031_regulator_probe, + .remove = __devexit_p(tps80031_regulator_remove), +}; + +static int __init tps80031_regulator_init(void) +{ + return platform_driver_register(&tps80031_regulator_driver); +} +subsys_initcall(tps80031_regulator_init); + +static void __exit tps80031_regulator_exit(void) +{ + platform_driver_unregister(&tps80031_regulator_driver); +} +module_exit(tps80031_regulator_exit); + +MODULE_ALIAS("platform:tps80031-regulator"); +MODULE_DESCRIPTION("Regulator Driver for TI TPS80031 PMIC"); +MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/vexpress.c b/drivers/regulator/vexpress.c new file mode 100644 index 000000000000..1d558111d60f --- /dev/null +++ b/drivers/regulator/vexpress.c @@ -0,0 +1,147 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Copyright (C) 2012 ARM Limited + */ + +#define DRVNAME "vexpress-regulator" +#define pr_fmt(fmt) DRVNAME ": " fmt + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> +#include <linux/vexpress.h> + +struct vexpress_regulator { + struct regulator_desc desc; + struct regulator_dev *regdev; + struct vexpress_config_func *func; +}; + +static int vexpress_regulator_get_voltage(struct regulator_dev *regdev) +{ + struct vexpress_regulator *reg = rdev_get_drvdata(regdev); + u32 uV; + int err = vexpress_config_read(reg->func, 0, &uV); + + return err ? err : uV; +} + +static int vexpress_regulator_set_voltage(struct regulator_dev *regdev, + int min_uV, int max_uV, unsigned *selector) +{ + struct vexpress_regulator *reg = rdev_get_drvdata(regdev); + + return vexpress_config_write(reg->func, 0, min_uV); +} + +static struct regulator_ops vexpress_regulator_ops_ro = { + .get_voltage = vexpress_regulator_get_voltage, +}; + +static struct regulator_ops vexpress_regulator_ops = { + .get_voltage = vexpress_regulator_get_voltage, + .set_voltage = vexpress_regulator_set_voltage, +}; + +static int vexpress_regulator_probe(struct platform_device *pdev) +{ + int err; + struct vexpress_regulator *reg; + struct regulator_init_data *init_data; + struct regulator_config config = { }; + + reg = devm_kzalloc(&pdev->dev, sizeof(*reg), GFP_KERNEL); + if (!reg) { + err = -ENOMEM; + goto error_kzalloc; + } + + reg->func = vexpress_config_func_get_by_dev(&pdev->dev); + if (!reg->func) { + err = -ENXIO; + goto error_get_func; + } + + reg->desc.name = dev_name(&pdev->dev); + reg->desc.type = REGULATOR_VOLTAGE; + reg->desc.owner = THIS_MODULE; + reg->desc.continuous_voltage_range = true; + + init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); + if (!init_data) { + err = -EINVAL; + goto error_get_regulator_init_data; + } + + init_data->constraints.apply_uV = 0; + if (init_data->constraints.min_uV && init_data->constraints.max_uV) + reg->desc.ops = &vexpress_regulator_ops; + else + reg->desc.ops = &vexpress_regulator_ops_ro; + + config.dev = &pdev->dev; + config.init_data = init_data; + config.driver_data = reg; + config.of_node = pdev->dev.of_node; + + reg->regdev = regulator_register(®->desc, &config); + if (IS_ERR(reg->regdev)) { + err = PTR_ERR(reg->regdev); + goto error_regulator_register; + } + + platform_set_drvdata(pdev, reg); + + return 0; + +error_regulator_register: +error_get_regulator_init_data: + vexpress_config_func_put(reg->func); +error_get_func: +error_kzalloc: + return err; +} + +static int __devexit vexpress_regulator_remove(struct platform_device *pdev) +{ + struct vexpress_regulator *reg = platform_get_drvdata(pdev); + + vexpress_config_func_put(reg->func); + regulator_unregister(reg->regdev); + + return 0; +} + +static struct of_device_id vexpress_regulator_of_match[] = { + { .compatible = "arm,vexpress-volt", }, + { } +}; + +static struct platform_driver vexpress_regulator_driver = { + .probe = vexpress_regulator_probe, + .remove = __devexit_p(vexpress_regulator_remove), + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + .of_match_table = vexpress_regulator_of_match, + }, +}; + +module_platform_driver(vexpress_regulator_driver); + +MODULE_AUTHOR("Pawel Moll <pawel.moll@arm.com>"); +MODULE_DESCRIPTION("Versatile Express regulator"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:vexpress-regulator"); |