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-rw-r--r--drivers/regulator/palmas-regulator.c822
1 files changed, 822 insertions, 0 deletions
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
new file mode 100644
index 000000000000..c4435f608df7
--- /dev/null
+++ b/drivers/regulator/palmas-regulator.c
@@ -0,0 +1,822 @@
+/*
+ * Driver for Regulator part of Palmas PMIC Chips
+ *
+ * Copyright 2011-2012 Texas Instruments Inc.
+ *
+ * Author: Graeme Gregory <gg@slimlogic.co.uk>
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#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/slab.h>
+#include <linux/regmap.h>
+#include <linux/mfd/palmas.h>
+
+struct regs_info {
+ char *name;
+ u8 vsel_addr;
+ u8 ctrl_addr;
+ u8 tstep_addr;
+};
+
+static const struct regs_info palmas_regs_info[] = {
+ {
+ .name = "SMPS12",
+ .vsel_addr = PALMAS_SMPS12_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS12_CTRL,
+ .tstep_addr = PALMAS_SMPS12_TSTEP,
+ },
+ {
+ .name = "SMPS123",
+ .vsel_addr = PALMAS_SMPS12_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS12_CTRL,
+ .tstep_addr = PALMAS_SMPS12_TSTEP,
+ },
+ {
+ .name = "SMPS3",
+ .vsel_addr = PALMAS_SMPS3_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS3_CTRL,
+ },
+ {
+ .name = "SMPS45",
+ .vsel_addr = PALMAS_SMPS45_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS45_CTRL,
+ .tstep_addr = PALMAS_SMPS45_TSTEP,
+ },
+ {
+ .name = "SMPS457",
+ .vsel_addr = PALMAS_SMPS45_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS45_CTRL,
+ .tstep_addr = PALMAS_SMPS45_TSTEP,
+ },
+ {
+ .name = "SMPS6",
+ .vsel_addr = PALMAS_SMPS6_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS6_CTRL,
+ .tstep_addr = PALMAS_SMPS6_TSTEP,
+ },
+ {
+ .name = "SMPS7",
+ .vsel_addr = PALMAS_SMPS7_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS7_CTRL,
+ },
+ {
+ .name = "SMPS8",
+ .vsel_addr = PALMAS_SMPS8_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS8_CTRL,
+ .tstep_addr = PALMAS_SMPS8_TSTEP,
+ },
+ {
+ .name = "SMPS9",
+ .vsel_addr = PALMAS_SMPS9_VOLTAGE,
+ .ctrl_addr = PALMAS_SMPS9_CTRL,
+ },
+ {
+ .name = "SMPS10",
+ },
+ {
+ .name = "LDO1",
+ .vsel_addr = PALMAS_LDO1_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO1_CTRL,
+ },
+ {
+ .name = "LDO2",
+ .vsel_addr = PALMAS_LDO2_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO2_CTRL,
+ },
+ {
+ .name = "LDO3",
+ .vsel_addr = PALMAS_LDO3_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO3_CTRL,
+ },
+ {
+ .name = "LDO4",
+ .vsel_addr = PALMAS_LDO4_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO4_CTRL,
+ },
+ {
+ .name = "LDO5",
+ .vsel_addr = PALMAS_LDO5_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO5_CTRL,
+ },
+ {
+ .name = "LDO6",
+ .vsel_addr = PALMAS_LDO6_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO6_CTRL,
+ },
+ {
+ .name = "LDO7",
+ .vsel_addr = PALMAS_LDO7_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO7_CTRL,
+ },
+ {
+ .name = "LDO8",
+ .vsel_addr = PALMAS_LDO8_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO8_CTRL,
+ },
+ {
+ .name = "LDO9",
+ .vsel_addr = PALMAS_LDO9_VOLTAGE,
+ .ctrl_addr = PALMAS_LDO9_CTRL,
+ },
+ {
+ .name = "LDOLN",
+ .vsel_addr = PALMAS_LDOLN_VOLTAGE,
+ .ctrl_addr = PALMAS_LDOLN_CTRL,
+ },
+ {
+ .name = "LDOUSB",
+ .vsel_addr = PALMAS_LDOUSB_VOLTAGE,
+ .ctrl_addr = PALMAS_LDOUSB_CTRL,
+ },
+};
+
+#define SMPS_CTRL_MODE_OFF 0x00
+#define SMPS_CTRL_MODE_ON 0x01
+#define SMPS_CTRL_MODE_ECO 0x02
+#define SMPS_CTRL_MODE_PWM 0x03
+
+/* These values are derived from the data sheet. And are the number of steps
+ * where there is a voltage change, the ranges at beginning and end of register
+ * max/min values where there are no change are ommitted.
+ *
+ * So they are basically (maxV-minV)/stepV
+ */
+#define PALMAS_SMPS_NUM_VOLTAGES 116
+#define PALMAS_SMPS10_NUM_VOLTAGES 2
+#define PALMAS_LDO_NUM_VOLTAGES 50
+
+#define SMPS10_VSEL (1<<3)
+#define SMPS10_BOOST_EN (1<<2)
+#define SMPS10_BYPASS_EN (1<<1)
+#define SMPS10_SWITCH_EN (1<<0)
+
+#define REGULATOR_SLAVE 0
+
+static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
+ unsigned int *dest)
+{
+ unsigned int addr;
+
+ addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
+
+ return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
+}
+
+static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
+ unsigned int value)
+{
+ unsigned int addr;
+
+ addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
+
+ return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
+}
+
+static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
+ unsigned int *dest)
+{
+ unsigned int addr;
+
+ addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
+
+ return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
+}
+
+static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
+ unsigned int value)
+{
+ unsigned int addr;
+
+ addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
+
+ return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
+}
+
+static int palmas_is_enabled_smps(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
+
+ reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
+ reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
+
+ return !!(reg);
+}
+
+static int palmas_enable_smps(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
+
+ reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
+ reg |= SMPS_CTRL_MODE_ON;
+
+ palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
+
+ return 0;
+}
+
+static int palmas_disable_smps(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
+
+ reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
+
+ palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
+
+ return 0;
+}
+
+
+static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
+ reg &= ~PALMAS_SMPS12_CTRL_STATUS_MASK;
+ reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ reg |= SMPS_CTRL_MODE_ON;
+ break;
+ case REGULATOR_MODE_IDLE:
+ reg |= SMPS_CTRL_MODE_ECO;
+ break;
+ case REGULATOR_MODE_FAST:
+ reg |= SMPS_CTRL_MODE_PWM;
+ break;
+ default:
+ return -EINVAL;
+ }
+ palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
+
+ return 0;
+}
+
+static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
+ reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
+ reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
+
+ switch (reg) {
+ case SMPS_CTRL_MODE_ON:
+ return REGULATOR_MODE_NORMAL;
+ case SMPS_CTRL_MODE_ECO:
+ return REGULATOR_MODE_IDLE;
+ case SMPS_CTRL_MODE_PWM:
+ return REGULATOR_MODE_FAST;
+ }
+
+ return 0;
+}
+
+static int palmas_list_voltage_smps(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ int mult = 1;
+
+ if (!selector)
+ return 0;
+
+ /* Read the multiplier set in VSEL register to return
+ * the correct voltage.
+ */
+ if (pmic->range[id])
+ mult = 2;
+
+ /* Voltage is (0.49V + (selector * 0.01V)) * RANGE
+ * as defined in data sheet. RANGE is either x1 or x2
+ */
+ return (490000 + (selector * 10000)) * mult;
+}
+
+static int palmas_get_voltage_smps_sel(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ int selector;
+ unsigned int reg;
+ unsigned int addr;
+
+ addr = palmas_regs_info[id].vsel_addr;
+
+ palmas_smps_read(pmic->palmas, addr, &reg);
+
+ selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
+
+ /* Adjust selector to match list_voltage ranges */
+ if ((selector > 0) && (selector < 6))
+ selector = 6;
+ if (!selector)
+ selector = 5;
+ if (selector > 121)
+ selector = 121;
+ selector -= 5;
+
+ return selector;
+}
+
+static int palmas_set_voltage_smps_sel(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg = 0;
+ unsigned int addr;
+
+ addr = palmas_regs_info[id].vsel_addr;
+
+ /* Make sure we don't change the value of RANGE */
+ if (pmic->range[id])
+ reg |= PALMAS_SMPS12_VOLTAGE_RANGE;
+
+ /* Adjust the linux selector into range used in VSEL register */
+ if (selector)
+ reg |= selector + 5;
+
+ palmas_smps_write(pmic->palmas, addr, reg);
+
+ return 0;
+}
+
+static int palmas_map_voltage_smps(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ int ret, voltage;
+
+ ret = ((min_uV - 500000) / 10000) + 1;
+ if (ret < 0)
+ return ret;
+
+ /* Map back into a voltage to verify we're still in bounds */
+ voltage = palmas_list_voltage_smps(rdev, ret);
+ if (voltage < min_uV || voltage > max_uV)
+ return -EINVAL;
+
+ return ret;
+}
+
+static struct regulator_ops palmas_ops_smps = {
+ .is_enabled = palmas_is_enabled_smps,
+ .enable = palmas_enable_smps,
+ .disable = palmas_disable_smps,
+ .set_mode = palmas_set_mode_smps,
+ .get_mode = palmas_get_mode_smps,
+ .get_voltage_sel = palmas_get_voltage_smps_sel,
+ .set_voltage_sel = palmas_set_voltage_smps_sel,
+ .list_voltage = palmas_list_voltage_smps,
+ .map_voltage = palmas_map_voltage_smps,
+};
+
+static int palmas_list_voltage_smps10(struct regulator_dev *dev,
+ unsigned selector)
+{
+ return 3750000 + (selector * 1250000);
+}
+
+static struct regulator_ops palmas_ops_smps10 = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = palmas_list_voltage_smps10,
+};
+
+static int palmas_is_enabled_ldo(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
+
+ reg &= PALMAS_LDO1_CTRL_STATUS;
+
+ return !!(reg);
+}
+
+static int palmas_list_voltage_ldo(struct regulator_dev *dev,
+ unsigned selector)
+{
+ if (!selector)
+ return 0;
+
+ /* voltage is 0.85V + (selector * 0.05v) */
+ return 850000 + (selector * 50000);
+}
+
+static int palmas_get_voltage_ldo_sel(struct regulator_dev *dev)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ int selector;
+ unsigned int reg;
+ unsigned int addr;
+
+ addr = palmas_regs_info[id].vsel_addr;
+
+ palmas_ldo_read(pmic->palmas, addr, &reg);
+
+ selector = reg & PALMAS_LDO1_VOLTAGE_VSEL_MASK;
+
+ /* Adjust selector to match list_voltage ranges */
+ if (selector > 49)
+ selector = 49;
+
+ return selector;
+}
+
+static int palmas_set_voltage_ldo_sel(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct palmas_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg = 0;
+ unsigned int addr;
+
+ addr = palmas_regs_info[id].vsel_addr;
+
+ reg = selector;
+
+ palmas_ldo_write(pmic->palmas, addr, reg);
+
+ return 0;
+}
+
+static int palmas_map_voltage_ldo(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ int ret, voltage;
+
+ ret = ((min_uV - 900000) / 50000) + 1;
+ if (ret < 0)
+ return ret;
+
+ /* Map back into a voltage to verify we're still in bounds */
+ voltage = palmas_list_voltage_ldo(rdev, ret);
+ if (voltage < min_uV || voltage > max_uV)
+ return -EINVAL;
+
+ return ret;
+}
+
+static struct regulator_ops palmas_ops_ldo = {
+ .is_enabled = palmas_is_enabled_ldo,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = palmas_get_voltage_ldo_sel,
+ .set_voltage_sel = palmas_set_voltage_ldo_sel,
+ .list_voltage = palmas_list_voltage_ldo,
+ .map_voltage = palmas_map_voltage_ldo,
+};
+
+/*
+ * setup the hardware based sleep configuration of the SMPS/LDO regulators
+ * from the platform data. This is different to the software based control
+ * supported by the regulator framework as it is controlled by toggling
+ * pins on the PMIC such as PREQ, SYSEN, ...
+ */
+static int palmas_smps_init(struct palmas *palmas, int id,
+ struct palmas_reg_init *reg_init)
+{
+ unsigned int reg;
+ unsigned int addr;
+ int ret;
+
+ addr = palmas_regs_info[id].ctrl_addr;
+
+ ret = palmas_smps_read(palmas, addr, &reg);
+ if (ret)
+ return ret;
+
+ if (id != PALMAS_REG_SMPS10) {
+ if (reg_init->warm_reset)
+ reg |= PALMAS_SMPS12_CTRL_WR_S;
+
+ if (reg_init->roof_floor)
+ reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
+
+ if (reg_init->mode_sleep) {
+ reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
+ reg |= reg_init->mode_sleep <<
+ PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
+ }
+ } else {
+ if (reg_init->mode_sleep) {
+ reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
+ reg |= reg_init->mode_sleep <<
+ PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
+ }
+
+ }
+ ret = palmas_smps_write(palmas, addr, reg);
+ if (ret)
+ return ret;
+
+ if (palmas_regs_info[id].tstep_addr && reg_init->tstep) {
+ addr = palmas_regs_info[id].tstep_addr;
+
+ reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK;
+
+ ret = palmas_smps_write(palmas, addr, reg);
+ if (ret)
+ return ret;
+ }
+
+ if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
+ addr = palmas_regs_info[id].vsel_addr;
+
+ reg = reg_init->vsel;
+
+ ret = palmas_smps_write(palmas, addr, reg);
+ if (ret)
+ return ret;
+ }
+
+
+ return 0;
+}
+
+static int palmas_ldo_init(struct palmas *palmas, int id,
+ struct palmas_reg_init *reg_init)
+{
+ unsigned int reg;
+ unsigned int addr;
+ int ret;
+
+ addr = palmas_regs_info[id].ctrl_addr;
+
+ ret = palmas_smps_read(palmas, addr, &reg);
+ if (ret)
+ return ret;
+
+ if (reg_init->warm_reset)
+ reg |= PALMAS_LDO1_CTRL_WR_S;
+
+ if (reg_init->mode_sleep)
+ reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
+
+ ret = palmas_smps_write(palmas, addr, reg);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static __devinit int palmas_probe(struct platform_device *pdev)
+{
+ struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
+ struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ struct palmas_pmic *pmic;
+ struct palmas_reg_init *reg_init;
+ int id = 0, ret;
+ unsigned int addr, reg;
+
+ if (!pdata)
+ return -EINVAL;
+ if (!pdata->reg_data)
+ return -EINVAL;
+
+ pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
+ if (!pmic)
+ return -ENOMEM;
+
+ pmic->dev = &pdev->dev;
+ pmic->palmas = palmas;
+ palmas->pmic = pmic;
+ platform_set_drvdata(pdev, pmic);
+
+ ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
+ if (ret)
+ goto err_unregister_regulator;
+
+ if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
+ pmic->smps123 = 1;
+
+ if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
+ pmic->smps457 = 1;
+
+ config.regmap = palmas->regmap[REGULATOR_SLAVE];
+ config.dev = &pdev->dev;
+ config.driver_data = pmic;
+
+ for (id = 0; id < PALMAS_REG_LDO1; id++) {
+
+ /*
+ * Miss out regulators which are not available due
+ * to slaving configurations.
+ */
+ switch (id) {
+ case PALMAS_REG_SMPS12:
+ case PALMAS_REG_SMPS3:
+ if (pmic->smps123)
+ continue;
+ break;
+ case PALMAS_REG_SMPS123:
+ if (!pmic->smps123)
+ continue;
+ break;
+ case PALMAS_REG_SMPS45:
+ case PALMAS_REG_SMPS7:
+ if (pmic->smps457)
+ continue;
+ break;
+ case PALMAS_REG_SMPS457:
+ if (!pmic->smps457)
+ continue;
+ }
+
+ /* Register the regulators */
+ pmic->desc[id].name = palmas_regs_info[id].name;
+ pmic->desc[id].id = id;
+
+ if (id != PALMAS_REG_SMPS10) {
+ pmic->desc[id].ops = &palmas_ops_smps;
+ pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
+ } else {
+ pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
+ pmic->desc[id].ops = &palmas_ops_smps10;
+ pmic->desc[id].vsel_reg = PALMAS_SMPS10_CTRL;
+ pmic->desc[id].vsel_mask = SMPS10_VSEL;
+ pmic->desc[id].enable_reg = PALMAS_SMPS10_STATUS;
+ pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
+ }
+
+ pmic->desc[id].type = REGULATOR_VOLTAGE;
+ pmic->desc[id].owner = THIS_MODULE;
+
+ /* Initialise sleep/init values from platform data */
+ if (pdata && pdata->reg_init) {
+ reg_init = pdata->reg_init[id];
+ if (reg_init) {
+ ret = palmas_smps_init(palmas, id, reg_init);
+ if (ret)
+ goto err_unregister_regulator;
+ }
+ }
+
+ /*
+ * read and store the RANGE bit for later use
+ * This must be done before regulator is probed otherwise
+ * we error in probe with unsuportable ranges.
+ */
+ if (id != PALMAS_REG_SMPS10) {
+ addr = palmas_regs_info[id].vsel_addr;
+
+ ret = palmas_smps_read(pmic->palmas, addr, &reg);
+ if (ret)
+ goto err_unregister_regulator;
+ if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
+ pmic->range[id] = 1;
+ }
+
+ if (pdata && pdata->reg_data)
+ config.init_data = pdata->reg_data[id];
+ else
+ config.init_data = NULL;
+
+ rdev = regulator_register(&pmic->desc[id], &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev,
+ "failed to register %s regulator\n",
+ pdev->name);
+ ret = PTR_ERR(rdev);
+ goto err_unregister_regulator;
+ }
+
+ /* Save regulator for cleanup */
+ pmic->rdev[id] = rdev;
+ }
+
+ /* Start this loop from the id left from previous loop */
+ for (; id < PALMAS_NUM_REGS; id++) {
+
+ /* Miss out regulators which are not available due
+ * to alternate functions.
+ */
+
+ /* Register the regulators */
+ pmic->desc[id].name = palmas_regs_info[id].name;
+ pmic->desc[id].id = id;
+ pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
+
+ pmic->desc[id].ops = &palmas_ops_ldo;
+
+ pmic->desc[id].type = REGULATOR_VOLTAGE;
+ pmic->desc[id].owner = THIS_MODULE;
+ pmic->desc[id].enable_reg = palmas_regs_info[id].ctrl_addr;
+ pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
+
+ if (pdata && pdata->reg_data)
+ config.init_data = pdata->reg_data[id];
+ else
+ config.init_data = NULL;
+
+ rdev = regulator_register(&pmic->desc[id], &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev,
+ "failed to register %s regulator\n",
+ pdev->name);
+ ret = PTR_ERR(rdev);
+ goto err_unregister_regulator;
+ }
+
+ /* Save regulator for cleanup */
+ pmic->rdev[id] = rdev;
+
+ /* Initialise sleep/init values from platform data */
+ if (pdata->reg_init) {
+ reg_init = pdata->reg_init[id];
+ if (reg_init) {
+ ret = palmas_ldo_init(palmas, id, reg_init);
+ if (ret)
+ goto err_unregister_regulator;
+ }
+ }
+ }
+
+ return 0;
+
+err_unregister_regulator:
+ while (--id >= 0)
+ regulator_unregister(pmic->rdev[id]);
+ kfree(pmic->rdev);
+ kfree(pmic->desc);
+ kfree(pmic);
+ return ret;
+}
+
+static int __devexit palmas_remove(struct platform_device *pdev)
+{
+ struct palmas_pmic *pmic = platform_get_drvdata(pdev);
+ int id;
+
+ for (id = 0; id < PALMAS_NUM_REGS; id++)
+ regulator_unregister(pmic->rdev[id]);
+
+ kfree(pmic->rdev);
+ kfree(pmic->desc);
+ kfree(pmic);
+ return 0;
+}
+
+static struct platform_driver palmas_driver = {
+ .driver = {
+ .name = "palmas-pmic",
+ .owner = THIS_MODULE,
+ },
+ .probe = palmas_probe,
+ .remove = __devexit_p(palmas_remove),
+};
+
+static int __init palmas_init(void)
+{
+ return platform_driver_register(&palmas_driver);
+}
+subsys_initcall(palmas_init);
+
+static void __exit palmas_exit(void)
+{
+ platform_driver_unregister(&palmas_driver);
+}
+module_exit(palmas_exit);
+
+MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
+MODULE_DESCRIPTION("Palmas voltage regulator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:palmas-pmic");
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-26 23:02:22 +0300