diff options
| -rw-r--r-- | drivers/regulator/as3711-regulator.c | 74 |
1 files changed, 71 insertions, 3 deletions
diff --git a/drivers/regulator/as3711-regulator.c b/drivers/regulator/as3711-regulator.c index f0ba8c4eefa9..0539b3e8f83b 100644 --- a/drivers/regulator/as3711-regulator.c +++ b/drivers/regulator/as3711-regulator.c @@ -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)) { |