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regulator: tps65090: add DT support 

Add DT support for TI PMIC tps65090 regulator driver. The DT of this
device have node regulator and all regulator's node of this device is
added under this node.

The device tree binding document has the required information for
adding this device on DTS file.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
hifive-unleashed-5.1
Laxman Dewangan 2013-01-29 14:35:16 +05:30 committed by Mark Brown
parent 949db153b6
commit 6c7a7a0e36
1 changed files with 101 additions and 5 deletions
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106
drivers/regulator/tps65090-regulator.c
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@ -19,11 +19,13 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/of_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/regulator/of_regulator.h>
#include <linux/mfd/tps65090.h>
struct tps65090_regulator {
@ -67,8 +69,8 @@ static struct regulator_desc tps65090_regulator_desc[] = {
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),
tps65090_REG_DESC(LDO1, "vsys-l1", 0, tps65090_ldo_ops),
tps65090_REG_DESC(LDO2, "vsys-l2", 0, tps65090_ldo_ops),
};
static inline bool is_dcdc(int id)
@ -138,6 +140,92 @@ static void tps65090_configure_regulator_config(
}
}
#ifdef CONFIG_OF
static struct of_regulator_match tps65090_matches[] = {
{ .name = "dcdc1", },
{ .name = "dcdc2", },
{ .name = "dcdc3", },
{ .name = "fet1", },
{ .name = "fet2", },
{ .name = "fet3", },
{ .name = "fet4", },
{ .name = "fet5", },
{ .name = "fet6", },
{ .name = "fet7", },
{ .name = "ldo1", },
{ .name = "ldo2", },
};
static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
struct platform_device *pdev,
struct of_regulator_match **tps65090_reg_matches)
{
struct tps65090_platform_data *tps65090_pdata;
struct device_node *np = pdev->dev.parent->of_node;
struct device_node *regulators;
int idx = 0, ret;
struct tps65090_regulator_plat_data *reg_pdata;
tps65090_pdata = devm_kzalloc(&pdev->dev, sizeof(*tps65090_pdata),
GFP_KERNEL);
if (!tps65090_pdata) {
dev_err(&pdev->dev, "Memory alloc for tps65090_pdata failed\n");
return ERR_PTR(-ENOMEM);
}
reg_pdata = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX *
sizeof(*reg_pdata), GFP_KERNEL);
if (!reg_pdata) {
dev_err(&pdev->dev, "Memory alloc for reg_pdata failed\n");
return ERR_PTR(-ENOMEM);
}
regulators = of_find_node_by_name(np, "regulators");
if (!regulators) {
dev_err(&pdev->dev, "regulator node not found\n");
return ERR_PTR(-ENODEV);
}
ret = of_regulator_match(pdev->dev.parent, regulators, tps65090_matches,
ARRAY_SIZE(tps65090_matches));
if (ret < 0) {
dev_err(&pdev->dev,
"Error parsing regulator init data: %d\n", ret);
return ERR_PTR(ret);
}
*tps65090_reg_matches = tps65090_matches;
for (idx = 0; idx < ARRAY_SIZE(tps65090_matches); idx++) {
struct regulator_init_data *ri_data;
struct tps65090_regulator_plat_data *rpdata;
rpdata = &reg_pdata[idx];
ri_data = tps65090_matches[idx].init_data;
if (!ri_data || !tps65090_matches[idx].of_node)
continue;
rpdata->reg_init_data = ri_data;
rpdata->enable_ext_control = of_property_read_bool(
tps65090_matches[idx].of_node,
"ti,enable-ext-control");
if (rpdata->enable_ext_control)
rpdata->gpio = of_get_named_gpio(np,
"dcdc-ext-control-gpios", 0);
tps65090_pdata->reg_pdata[idx] = rpdata;
}
return tps65090_pdata;
}
#else
static inline struct tps65090_platform_data *tps65090_parse_dt_reg_data(
struct platform_device *pdev,
struct of_regulator_match **tps65090_reg_matches)
{
*tps65090_reg_matches = NULL;
return NULL;
}
#endif
static int tps65090_regulator_probe(struct platform_device *pdev)
{
struct tps65090 *tps65090_mfd = dev_get_drvdata(pdev->dev.parent);
@ -147,15 +235,19 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
struct tps65090_regulator_plat_data *tps_pdata;
struct tps65090_regulator *pmic;
struct tps65090_platform_data *tps65090_pdata;
struct of_regulator_match *tps65090_reg_matches = NULL;
int num;
int ret;
dev_dbg(&pdev->dev, "Probing regulator\n");
tps65090_pdata = dev_get_platdata(pdev->dev.parent);
if (!tps65090_pdata) {
if (!tps65090_pdata && tps65090_mfd->dev->of_node)
tps65090_pdata = tps65090_parse_dt_reg_data(pdev,
&tps65090_reg_matches);
if (IS_ERR_OR_NULL(tps65090_pdata)) {
dev_err(&pdev->dev, "Platform data missing\n");
return -EINVAL;
return tps65090_pdata ? PTR_ERR(tps65090_pdata) : -EINVAL;
}
pmic = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX * sizeof(*pmic),
@ -192,13 +284,17 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
}
}
config.dev = &pdev->dev;
config.dev = pdev->dev.parent;
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;
if (tps65090_reg_matches)
config.of_node = tps65090_reg_matches[num].of_node;
else
config.of_node = NULL;
rdev = regulator_register(ri->desc, &config);
if (IS_ERR(rdev)) {