hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

regulator: as3711: add OF support 

AS3711 regulator OF support only evaluates standard regulator DT
properties.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Guennadi Liakhovetski 2013-03-22 17:15:48 +01:00 committed by Mark Brown
parent a937536b86
commit 416d67599e
1 changed files with 71 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
drivers/regulator/as3711-regulator.c
View File

@ -13,9 +13,11 @@
#include <linux/init.h>
#include <linux/mfd/as3711.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>
struct as3711_regulator_info {
@ -276,6 +278,60 @@ static struct as3711_regulator_info as3711_reg_info[] = {
#define AS3711_REGULATOR_NUM ARRAY_SIZE(as3711_reg_info)
static const char *as3711_regulator_of_names[AS3711_REGULATOR_NUM] = {
[AS3711_REGULATOR_SD_1] = "sd1",
[AS3711_REGULATOR_SD_2] = "sd2",
[AS3711_REGULATOR_SD_3] = "sd3",
[AS3711_REGULATOR_SD_4] = "sd4",
[AS3711_REGULATOR_LDO_1] = "ldo1",
[AS3711_REGULATOR_LDO_2] = "ldo2",
[AS3711_REGULATOR_LDO_3] = "ldo3",
[AS3711_REGULATOR_LDO_4] = "ldo4",
[AS3711_REGULATOR_LDO_5] = "ldo5",
[AS3711_REGULATOR_LDO_6] = "ldo6",
[AS3711_REGULATOR_LDO_7] = "ldo7",
[AS3711_REGULATOR_LDO_8] = "ldo8",
};
static int as3711_regulator_parse_dt(struct device *dev,
struct device_node **of_node, const int count)
{
struct as3711_regulator_pdata *pdata = dev_get_platdata(dev);
struct device_node *regulators =
of_find_node_by_name(dev->parent->of_node, "regulators");
struct of_regulator_match *matches, *match;
int ret, i;
if (!regulators) {
dev_err(dev, "regulator node not found\n");
return -ENODEV;
}
matches = devm_kzalloc(dev, sizeof(*matches) * count, GFP_KERNEL);
if (!matches)
return -ENOMEM;
for (i = 0, match = matches; i < count; i++, match++) {
match->name = as3711_regulator_of_names[i];
match->driver_data = as3711_reg_info + i;
}
ret = of_regulator_match(dev->parent, regulators, matches, count);
of_node_put(regulators);
if (ret < 0) {
dev_err(dev, "Error parsing regulator init data: %d\n", ret);
return ret;
}
for (i = 0, match = matches; i < count; i++, match++)
if (match->of_node) {
pdata->init_data[i] = match->init_data;
of_node[i] = match->of_node;
}
return 0;
}
static int as3711_regulator_probe(struct platform_device *pdev)
{
struct as3711_regulator_pdata *pdata = dev_get_platdata(&pdev->dev);
@ -284,13 +340,24 @@ static int as3711_regulator_probe(struct platform_device *pdev)
struct regulator_config config = {.dev = &pdev->dev,};
struct as3711_regulator *reg = NULL;
struct as3711_regulator *regs;
struct device_node *of_node[AS3711_REGULATOR_NUM] = {};
struct regulator_dev *rdev;
struct as3711_regulator_info *ri;
int ret;
int id;
if (!pdata)
dev_dbg(&pdev->dev, "No platform data...\n");
if (!pdata) {
dev_err(&pdev->dev, "No platform data...\n");
return -ENODEV;
}
if (pdev->dev.parent->of_node) {
ret = as3711_regulator_parse_dt(&pdev->dev, of_node, AS3711_REGULATOR_NUM);
if (ret < 0) {
dev_err(&pdev->dev, "DT parsing failed: %d\n", ret);
return ret;
}
}
regs = devm_kzalloc(&pdev->dev, AS3711_REGULATOR_NUM *
sizeof(struct as3711_regulator), GFP_KERNEL);
@ -300,7 +367,7 @@ static int as3711_regulator_probe(struct platform_device *pdev)
}
for (id = 0, ri = as3711_reg_info; id < AS3711_REGULATOR_NUM; ++id, ri++) {
reg_data = pdata ? pdata->init_data[id] : NULL;
reg_data = pdata->init_data[id];
/* No need to register if there is no regulator data */
if (!reg_data)
@ -312,6 +379,7 @@ static int as3711_regulator_probe(struct platform_device *pdev)
config.init_data = reg_data;
config.driver_data = reg;
config.regmap = as3711->regmap;
config.of_node = of_node[id];
rdev = regulator_register(&ri->desc, &config);
if (IS_ERR(rdev)) {