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Diffstat (limited to 'drivers/regulator/ab3100.c')
-rw-r--r--drivers/regulator/ab3100.c745
1 files changed, 745 insertions, 0 deletions
diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
new file mode 100644
index 000000000..de2644490
--- /dev/null
+++ b/drivers/regulator/ab3100.c
@@ -0,0 +1,745 @@
+/*
+ * drivers/regulator/ab3100.c
+ *
+ * Copyright (C) 2008-2009 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ * Low-level control of the AB3100 IC Low Dropout (LDO)
+ * regulators, external regulator and buck converter
+ * Author: Mattias Wallin <mattias.wallin@stericsson.com>
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/mfd/ab3100.h>
+#include <linux/mfd/abx500.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
+
+/* LDO registers and some handy masking definitions for AB3100 */
+#define AB3100_LDO_A 0x40
+#define AB3100_LDO_C 0x41
+#define AB3100_LDO_D 0x42
+#define AB3100_LDO_E 0x43
+#define AB3100_LDO_E_SLEEP 0x44
+#define AB3100_LDO_F 0x45
+#define AB3100_LDO_G 0x46
+#define AB3100_LDO_H 0x47
+#define AB3100_LDO_H_SLEEP_MODE 0
+#define AB3100_LDO_H_SLEEP_EN 2
+#define AB3100_LDO_ON 4
+#define AB3100_LDO_H_VSEL_AC 5
+#define AB3100_LDO_K 0x48
+#define AB3100_LDO_EXT 0x49
+#define AB3100_BUCK 0x4A
+#define AB3100_BUCK_SLEEP 0x4B
+#define AB3100_REG_ON_MASK 0x10
+
+/**
+ * struct ab3100_regulator
+ * A struct passed around the individual regulator functions
+ * @platform_device: platform device holding this regulator
+ * @dev: handle to the device
+ * @plfdata: AB3100 platform data passed in at probe time
+ * @regreg: regulator register number in the AB3100
+ */
+struct ab3100_regulator {
+ struct regulator_dev *rdev;
+ struct device *dev;
+ struct ab3100_platform_data *plfdata;
+ u8 regreg;
+};
+
+/* The order in which registers are initialized */
+static const u8 ab3100_reg_init_order[AB3100_NUM_REGULATORS+2] = {
+ AB3100_LDO_A,
+ AB3100_LDO_C,
+ AB3100_LDO_E,
+ AB3100_LDO_E_SLEEP,
+ AB3100_LDO_F,
+ AB3100_LDO_G,
+ AB3100_LDO_H,
+ AB3100_LDO_K,
+ AB3100_LDO_EXT,
+ AB3100_BUCK,
+ AB3100_BUCK_SLEEP,
+ AB3100_LDO_D,
+};
+
+/* Preset (hardware defined) voltages for these regulators */
+#define LDO_A_VOLTAGE 2750000
+#define LDO_C_VOLTAGE 2650000
+#define LDO_D_VOLTAGE 2650000
+
+static const unsigned int ldo_e_buck_typ_voltages[] = {
+ 1800000,
+ 1400000,
+ 1300000,
+ 1200000,
+ 1100000,
+ 1050000,
+ 900000,
+};
+
+static const unsigned int ldo_f_typ_voltages[] = {
+ 1800000,
+ 1400000,
+ 1300000,
+ 1200000,
+ 1100000,
+ 1050000,
+ 2500000,
+ 2650000,
+};
+
+static const unsigned int ldo_g_typ_voltages[] = {
+ 2850000,
+ 2750000,
+ 1800000,
+ 1500000,
+};
+
+static const unsigned int ldo_h_typ_voltages[] = {
+ 2750000,
+ 1800000,
+ 1500000,
+ 1200000,
+};
+
+static const unsigned int ldo_k_typ_voltages[] = {
+ 2750000,
+ 1800000,
+};
+
+
+/* The regulator devices */
+static struct ab3100_regulator
+ab3100_regulators[AB3100_NUM_REGULATORS] = {
+ {
+ .regreg = AB3100_LDO_A,
+ },
+ {
+ .regreg = AB3100_LDO_C,
+ },
+ {
+ .regreg = AB3100_LDO_D,
+ },
+ {
+ .regreg = AB3100_LDO_E,
+ },
+ {
+ .regreg = AB3100_LDO_F,
+ },
+ {
+ .regreg = AB3100_LDO_G,
+ },
+ {
+ .regreg = AB3100_LDO_H,
+ },
+ {
+ .regreg = AB3100_LDO_K,
+ },
+ {
+ .regreg = AB3100_LDO_EXT,
+ /* No voltages for the external regulator */
+ },
+ {
+ .regreg = AB3100_BUCK,
+ },
+};
+
+/*
+ * General functions for enable, disable and is_enabled used for
+ * LDO: A,C,E,F,G,H,K,EXT and BUCK
+ */
+static int ab3100_enable_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+ int err;
+ u8 regval;
+
+ err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,
+ &regval);
+ if (err) {
+ dev_warn(&reg->dev, "failed to get regid %d value\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* The regulator is already on, no reason to go further */
+ if (regval & AB3100_REG_ON_MASK)
+ return 0;
+
+ regval |= AB3100_REG_ON_MASK;
+
+ err = abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg,
+ regval);
+ if (err) {
+ dev_warn(&reg->dev, "failed to set regid %d value\n",
+ abreg->regreg);
+ return err;
+ }
+
+ return 0;
+}
+
+static int ab3100_disable_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+ int err;
+ u8 regval;
+
+ /*
+ * LDO D is a special regulator. When it is disabled, the entire
+ * system is shut down. So this is handled specially.
+ */
+ pr_info("Called ab3100_disable_regulator\n");
+ if (abreg->regreg == AB3100_LDO_D) {
+ dev_info(&reg->dev, "disabling LDO D - shut down system\n");
+ /* Setting LDO D to 0x00 cuts the power to the SoC */
+ return abx500_set_register_interruptible(abreg->dev, 0,
+ AB3100_LDO_D, 0x00U);
+ }
+
+ /*
+ * All other regulators are handled here
+ */
+ err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,
+ &regval);
+ if (err) {
+ dev_err(&reg->dev, "unable to get register 0x%x\n",
+ abreg->regreg);
+ return err;
+ }
+ regval &= ~AB3100_REG_ON_MASK;
+ return abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg,
+ regval);
+}
+
+static int ab3100_is_enabled_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+ u8 regval;
+ int err;
+
+ err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,
+ &regval);
+ if (err) {
+ dev_err(&reg->dev, "unable to get register 0x%x\n",
+ abreg->regreg);
+ return err;
+ }
+
+ return regval & AB3100_REG_ON_MASK;
+}
+
+static int ab3100_get_voltage_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+ u8 regval;
+ int err;
+
+ /*
+ * For variable types, read out setting and index into
+ * supplied voltage list.
+ */
+ err = abx500_get_register_interruptible(abreg->dev, 0,
+ abreg->regreg, &regval);
+ if (err) {
+ dev_warn(&reg->dev,
+ "failed to get regulator value in register %02x\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* The 3 highest bits index voltages */
+ regval &= 0xE0;
+ regval >>= 5;
+
+ if (regval >= reg->desc->n_voltages) {
+ dev_err(&reg->dev,
+ "regulator register %02x contains an illegal voltage setting\n",
+ abreg->regreg);
+ return -EINVAL;
+ }
+
+ return reg->desc->volt_table[regval];
+}
+
+static int ab3100_set_voltage_regulator_sel(struct regulator_dev *reg,
+ unsigned selector)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+ u8 regval;
+ int err;
+
+ err = abx500_get_register_interruptible(abreg->dev, 0,
+ abreg->regreg, &regval);
+ if (err) {
+ dev_warn(&reg->dev,
+ "failed to get regulator register %02x\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* The highest three bits control the variable regulators */
+ regval &= ~0xE0;
+ regval |= (selector << 5);
+
+ err = abx500_set_register_interruptible(abreg->dev, 0,
+ abreg->regreg, regval);
+ if (err)
+ dev_warn(&reg->dev, "failed to set regulator register %02x\n",
+ abreg->regreg);
+
+ return err;
+}
+
+static int ab3100_set_suspend_voltage_regulator(struct regulator_dev *reg,
+ int uV)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+ u8 regval;
+ int err;
+ int bestindex;
+ u8 targetreg;
+
+ if (abreg->regreg == AB3100_LDO_E)
+ targetreg = AB3100_LDO_E_SLEEP;
+ else if (abreg->regreg == AB3100_BUCK)
+ targetreg = AB3100_BUCK_SLEEP;
+ else
+ return -EINVAL;
+
+ /* LDO E and BUCK have special suspend voltages you can set */
+ bestindex = regulator_map_voltage_iterate(reg, uV, uV);
+
+ err = abx500_get_register_interruptible(abreg->dev, 0,
+ targetreg, &regval);
+ if (err) {
+ dev_warn(&reg->dev,
+ "failed to get regulator register %02x\n",
+ targetreg);
+ return err;
+ }
+
+ /* The highest three bits control the variable regulators */
+ regval &= ~0xE0;
+ regval |= (bestindex << 5);
+
+ err = abx500_set_register_interruptible(abreg->dev, 0,
+ targetreg, regval);
+ if (err)
+ dev_warn(&reg->dev, "failed to set regulator register %02x\n",
+ abreg->regreg);
+
+ return err;
+}
+
+/*
+ * The external regulator can just define a fixed voltage.
+ */
+static int ab3100_get_voltage_regulator_external(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
+
+ if (abreg->plfdata)
+ return abreg->plfdata->external_voltage;
+ else
+ /* TODO: encode external voltage into device tree */
+ return 0;
+}
+
+static struct regulator_ops regulator_ops_fixed = {
+ .list_voltage = regulator_list_voltage_linear,
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+};
+
+static struct regulator_ops regulator_ops_variable = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator,
+ .set_voltage_sel = ab3100_set_voltage_regulator_sel,
+ .list_voltage = regulator_list_voltage_table,
+};
+
+static struct regulator_ops regulator_ops_variable_sleepable = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator,
+ .set_voltage_sel = ab3100_set_voltage_regulator_sel,
+ .set_suspend_voltage = ab3100_set_suspend_voltage_regulator,
+ .list_voltage = regulator_list_voltage_table,
+};
+
+/*
+ * LDO EXT is an external regulator so it is really
+ * not possible to set any voltage locally here, AB3100
+ * is an on/off switch plain an simple. The external
+ * voltage is defined in the board set-up if any.
+ */
+static struct regulator_ops regulator_ops_external = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator_external,
+};
+
+static struct regulator_desc
+ab3100_regulator_desc[AB3100_NUM_REGULATORS] = {
+ {
+ .name = "LDO_A",
+ .id = AB3100_LDO_A,
+ .ops = &regulator_ops_fixed,
+ .n_voltages = 1,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .min_uV = LDO_A_VOLTAGE,
+ .enable_time = 200,
+ },
+ {
+ .name = "LDO_C",
+ .id = AB3100_LDO_C,
+ .ops = &regulator_ops_fixed,
+ .n_voltages = 1,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .min_uV = LDO_C_VOLTAGE,
+ .enable_time = 200,
+ },
+ {
+ .name = "LDO_D",
+ .id = AB3100_LDO_D,
+ .ops = &regulator_ops_fixed,
+ .n_voltages = 1,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .min_uV = LDO_D_VOLTAGE,
+ .enable_time = 200,
+ },
+ {
+ .name = "LDO_E",
+ .id = AB3100_LDO_E,
+ .ops = &regulator_ops_variable_sleepable,
+ .n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages),
+ .volt_table = ldo_e_buck_typ_voltages,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .enable_time = 200,
+ },
+ {
+ .name = "LDO_F",
+ .id = AB3100_LDO_F,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_f_typ_voltages),
+ .volt_table = ldo_f_typ_voltages,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .enable_time = 600,
+ },
+ {
+ .name = "LDO_G",
+ .id = AB3100_LDO_G,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_g_typ_voltages),
+ .volt_table = ldo_g_typ_voltages,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .enable_time = 400,
+ },
+ {
+ .name = "LDO_H",
+ .id = AB3100_LDO_H,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_h_typ_voltages),
+ .volt_table = ldo_h_typ_voltages,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .enable_time = 200,
+ },
+ {
+ .name = "LDO_K",
+ .id = AB3100_LDO_K,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_k_typ_voltages),
+ .volt_table = ldo_k_typ_voltages,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .enable_time = 200,
+ },
+ {
+ .name = "LDO_EXT",
+ .id = AB3100_LDO_EXT,
+ .ops = &regulator_ops_external,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "BUCK",
+ .id = AB3100_BUCK,
+ .ops = &regulator_ops_variable_sleepable,
+ .n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages),
+ .volt_table = ldo_e_buck_typ_voltages,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .enable_time = 1000,
+ },
+};
+
+static int ab3100_regulator_register(struct platform_device *pdev,
+ struct ab3100_platform_data *plfdata,
+ struct regulator_init_data *init_data,
+ struct device_node *np,
+ unsigned long id)
+{
+ struct regulator_desc *desc;
+ struct ab3100_regulator *reg;
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ int err, i;
+
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ desc = &ab3100_regulator_desc[i];
+ if (desc->id == id)
+ break;
+ }
+ if (desc->id != id)
+ return -ENODEV;
+
+ /* Same index used for this array */
+ reg = &ab3100_regulators[i];
+
+ /*
+ * Initialize per-regulator struct.
+ * Inherit platform data, this comes down from the
+ * i2c boarddata, from the machine. So if you want to
+ * see what it looks like for a certain machine, go
+ * into the machine I2C setup.
+ */
+ reg->dev = &pdev->dev;
+ if (plfdata) {
+ reg->plfdata = plfdata;
+ config.init_data = &plfdata->reg_constraints[i];
+ } else if (np) {
+ config.of_node = np;
+ config.init_data = init_data;
+ }
+ config.dev = &pdev->dev;
+ config.driver_data = reg;
+
+ rdev = devm_regulator_register(&pdev->dev, desc, &config);
+ if (IS_ERR(rdev)) {
+ err = PTR_ERR(rdev);
+ dev_err(&pdev->dev,
+ "%s: failed to register regulator %s err %d\n",
+ __func__, desc->name,
+ err);
+ return err;
+ }
+
+ /* Then set a pointer back to the registered regulator */
+ reg->rdev = rdev;
+ return 0;
+}
+
+static struct of_regulator_match ab3100_regulator_matches[] = {
+ { .name = "ab3100_ldo_a", .driver_data = (void *) AB3100_LDO_A, },
+ { .name = "ab3100_ldo_c", .driver_data = (void *) AB3100_LDO_C, },
+ { .name = "ab3100_ldo_d", .driver_data = (void *) AB3100_LDO_D, },
+ { .name = "ab3100_ldo_e", .driver_data = (void *) AB3100_LDO_E, },
+ { .name = "ab3100_ldo_f", .driver_data = (void *) AB3100_LDO_F },
+ { .name = "ab3100_ldo_g", .driver_data = (void *) AB3100_LDO_G },
+ { .name = "ab3100_ldo_h", .driver_data = (void *) AB3100_LDO_H },
+ { .name = "ab3100_ldo_k", .driver_data = (void *) AB3100_LDO_K },
+ { .name = "ab3100_ext", .driver_data = (void *) AB3100_LDO_EXT },
+ { .name = "ab3100_buck", .driver_data = (void *) AB3100_BUCK },
+};
+
+/*
+ * Initial settings of ab3100 registers.
+ * Common for below LDO regulator settings are that
+ * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
+ * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
+ */
+/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
+#define LDO_A_SETTING 0x16
+/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_C_SETTING 0x10
+/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
+#define LDO_D_SETTING 0x10
+/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_E_SETTING 0x10
+/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
+#define LDO_E_SLEEP_SETTING 0x00
+/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_F_SETTING 0xD0
+/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_G_SETTING 0x00
+/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
+#define LDO_H_SETTING 0x18
+/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_K_SETTING 0x00
+/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
+#define LDO_EXT_SETTING 0x00
+/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
+#define BUCK_SETTING 0x7D
+/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
+#define BUCK_SLEEP_SETTING 0xAC
+
+static const u8 ab3100_reg_initvals[] = {
+ LDO_A_SETTING,
+ LDO_C_SETTING,
+ LDO_E_SETTING,
+ LDO_E_SLEEP_SETTING,
+ LDO_F_SETTING,
+ LDO_G_SETTING,
+ LDO_H_SETTING,
+ LDO_K_SETTING,
+ LDO_EXT_SETTING,
+ BUCK_SETTING,
+ BUCK_SLEEP_SETTING,
+ LDO_D_SETTING,
+};
+
+static int ab3100_regulators_remove(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ struct ab3100_regulator *reg = &ab3100_regulators[i];
+
+ reg->rdev = NULL;
+ }
+ return 0;
+}
+
+static int
+ab3100_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
+{
+ int err, i;
+
+ /*
+ * Set up the regulator registers, as was previously done with
+ * platform data.
+ */
+ /* Set up regulators */
+ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
+ err = abx500_set_register_interruptible(&pdev->dev, 0,
+ ab3100_reg_init_order[i],
+ ab3100_reg_initvals[i]);
+ if (err) {
+ dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
+ err);
+ return err;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ab3100_regulator_matches); i++) {
+ err = ab3100_regulator_register(
+ pdev, NULL, ab3100_regulator_matches[i].init_data,
+ ab3100_regulator_matches[i].of_node,
+ (unsigned long)ab3100_regulator_matches[i].driver_data);
+ if (err) {
+ ab3100_regulators_remove(pdev);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+
+static int ab3100_regulators_probe(struct platform_device *pdev)
+{
+ struct ab3100_platform_data *plfdata = dev_get_platdata(&pdev->dev);
+ struct device_node *np = pdev->dev.of_node;
+ int err = 0;
+ u8 data;
+ int i;
+
+ /* Check chip state */
+ err = abx500_get_register_interruptible(&pdev->dev, 0,
+ AB3100_LDO_D, &data);
+ if (err) {
+ dev_err(&pdev->dev, "could not read initial status of LDO_D\n");
+ return err;
+ }
+ if (data & 0x10)
+ dev_notice(&pdev->dev,
+ "chip is already in active mode (Warm start)\n");
+ else
+ dev_notice(&pdev->dev,
+ "chip is in inactive mode (Cold start)\n");
+
+ if (np) {
+ err = of_regulator_match(&pdev->dev, np,
+ ab3100_regulator_matches,
+ ARRAY_SIZE(ab3100_regulator_matches));
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Error parsing regulator init data: %d\n", err);
+ return err;
+ }
+ return ab3100_regulator_of_probe(pdev, np);
+ }
+
+ /* Set up regulators */
+ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
+ err = abx500_set_register_interruptible(&pdev->dev, 0,
+ ab3100_reg_init_order[i],
+ plfdata->reg_initvals[i]);
+ if (err) {
+ dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
+ err);
+ return err;
+ }
+ }
+
+ /* Register the regulators */
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ struct regulator_desc *desc = &ab3100_regulator_desc[i];
+
+ err = ab3100_regulator_register(pdev, plfdata, NULL, NULL,
+ desc->id);
+ if (err) {
+ ab3100_regulators_remove(pdev);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static struct platform_driver ab3100_regulators_driver = {
+ .driver = {
+ .name = "ab3100-regulators",
+ },
+ .probe = ab3100_regulators_probe,
+ .remove = ab3100_regulators_remove,
+};
+
+static __init int ab3100_regulators_init(void)
+{
+ return platform_driver_register(&ab3100_regulators_driver);
+}
+
+static __exit void ab3100_regulators_exit(void)
+{
+ platform_driver_unregister(&ab3100_regulators_driver);
+}
+
+subsys_initcall(ab3100_regulators_init);
+module_exit(ab3100_regulators_exit);
+
+MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
+MODULE_DESCRIPTION("AB3100 Regulator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ab3100-regulators");
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 18:07:37 +0000