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path: root/drivers/regulator/88pm8607.c
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Diffstat (limited to 'drivers/regulator/88pm8607.c')
-rw-r--r--drivers/regulator/88pm8607.c136
1 files changed, 120 insertions, 16 deletions
diff --git a/drivers/regulator/88pm8607.c b/drivers/regulator/88pm8607.c
index c3482b954cb7..1c5ab0172ea2 100644
--- a/drivers/regulator/88pm8607.c
+++ b/drivers/regulator/88pm8607.c
@@ -12,6 +12,8 @@
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
@@ -23,6 +25,7 @@ struct pm8607_regulator_info {
struct pm860x_chip *chip;
struct regulator_dev *regulator;
struct i2c_client *i2c;
+ struct i2c_client *i2c_8606;
unsigned int *vol_table;
unsigned int *vol_suspend;
@@ -242,6 +245,35 @@ static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
return ret;
}
+static int pm8606_preg_enable(struct regulator_dev *rdev)
+{
+ struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
+
+ return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
+ 1 << rdev->desc->enable_mask, 0);
+}
+
+static int pm8606_preg_disable(struct regulator_dev *rdev)
+{
+ struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
+
+ return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
+ 1 << rdev->desc->enable_mask,
+ 1 << rdev->desc->enable_mask);
+}
+
+static int pm8606_preg_is_enabled(struct regulator_dev *rdev)
+{
+ struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg);
+ if (ret < 0)
+ return ret;
+
+ return !((unsigned char)ret & (1 << rdev->desc->enable_mask));
+}
+
static struct regulator_ops pm8607_regulator_ops = {
.list_voltage = pm8607_list_voltage,
.set_voltage_sel = pm8607_set_voltage_sel,
@@ -251,6 +283,25 @@ static struct regulator_ops pm8607_regulator_ops = {
.is_enabled = regulator_is_enabled_regmap,
};
+static struct regulator_ops pm8606_preg_ops = {
+ .enable = pm8606_preg_enable,
+ .disable = pm8606_preg_disable,
+ .is_enabled = pm8606_preg_is_enabled,
+};
+
+#define PM8606_PREG(ereg, ebit) \
+{ \
+ .desc = { \
+ .name = "PREG", \
+ .ops = &pm8606_preg_ops, \
+ .type = REGULATOR_CURRENT, \
+ .id = PM8606_ID_PREG, \
+ .owner = THIS_MODULE, \
+ .enable_reg = PM8606_##ereg, \
+ .enable_mask = (ebit), \
+ }, \
+}
+
#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
{ \
.desc = { \
@@ -311,6 +362,38 @@ static struct pm8607_regulator_info pm8607_regulator_info[] = {
PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
};
+static struct pm8607_regulator_info pm8606_regulator_info[] = {
+ PM8606_PREG(PREREGULATORB, 5),
+};
+
+#ifdef CONFIG_OF
+static int pm8607_regulator_dt_init(struct platform_device *pdev,
+ struct pm8607_regulator_info *info,
+ struct regulator_config *config)
+{
+ struct device_node *nproot, *np;
+ nproot = pdev->dev.parent->of_node;
+ if (!nproot)
+ return -ENODEV;
+ nproot = of_find_node_by_name(nproot, "regulators");
+ if (!nproot) {
+ dev_err(&pdev->dev, "failed to find regulators node\n");
+ return -ENODEV;
+ }
+ for_each_child_of_node(nproot, np) {
+ if (!of_node_cmp(np->name, info->desc.name)) {
+ config->init_data =
+ of_get_regulator_init_data(&pdev->dev, np);
+ config->of_node = np;
+ break;
+ }
+ }
+ return 0;
+}
+#else
+#define pm8607_regulator_dt_init(x, y, z) (-1)
+#endif
+
static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@@ -320,22 +403,28 @@ static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
struct resource *res;
int i;
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "No I/O resource!\n");
- return -EINVAL;
- }
- for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
- info = &pm8607_regulator_info[i];
- if (info->desc.id == res->start)
- break;
- }
- if (i == ARRAY_SIZE(pm8607_regulator_info)) {
- dev_err(&pdev->dev, "Failed to find regulator %llu\n",
- (unsigned long long)res->start);
- return -EINVAL;
+ res = platform_get_resource(pdev, IORESOURCE_REG, 0);
+ if (res) {
+ /* There're resources in 88PM8607 regulator driver */
+ for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
+ info = &pm8607_regulator_info[i];
+ if (info->desc.vsel_reg == res->start)
+ break;
+ }
+ if (i == ARRAY_SIZE(pm8607_regulator_info)) {
+ dev_err(&pdev->dev, "Failed to find regulator %llu\n",
+ (unsigned long long)res->start);
+ return -EINVAL;
+ }
+ } else {
+ /* There's no resource in 88PM8606 PREG regulator driver */
+ info = &pm8606_regulator_info[0];
+ /* i is used to check regulator ID */
+ i = -1;
}
info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+ info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
+ chip->client;
info->chip = chip;
/* check DVC ramp slope double */
@@ -343,15 +432,17 @@ static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
info->slope_double = 1;
config.dev = &pdev->dev;
- config.init_data = pdata;
config.driver_data = info;
+ if (pm8607_regulator_dt_init(pdev, info, &config))
+ if (pdata)
+ config.init_data = pdata;
+
if (chip->id == CHIP_PM8607)
config.regmap = chip->regmap;
else
config.regmap = chip->regmap_companion;
- /* replace driver_data with info */
info->regulator = regulator_register(&info->desc, &config);
if (IS_ERR(info->regulator)) {
dev_err(&pdev->dev, "failed to register regulator %s\n",
@@ -372,6 +463,18 @@ static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
return 0;
}
+static struct platform_device_id pm8607_regulator_driver_ids[] = {
+ {
+ .name = "88pm860x-regulator",
+ .driver_data = 0,
+ }, {
+ .name = "88pm860x-preg",
+ .driver_data = 0,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
+
static struct platform_driver pm8607_regulator_driver = {
.driver = {
.name = "88pm860x-regulator",
@@ -379,6 +482,7 @@ static struct platform_driver pm8607_regulator_driver = {
},
.probe = pm8607_regulator_probe,
.remove = __devexit_p(pm8607_regulator_remove),
+ .id_table = pm8607_regulator_driver_ids,
};
static int __init pm8607_regulator_init(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 18:08:42 +0000