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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>
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a937536b86
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1 changed files with 71 additions and 3 deletions
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@ -13,9 +13,11 @@
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#include <linux/init.h>
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#include <linux/mfd/as3711.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/slab.h>
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struct as3711_regulator_info {
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@ -276,6 +278,60 @@ static struct as3711_regulator_info as3711_reg_info[] = {
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#define AS3711_REGULATOR_NUM ARRAY_SIZE(as3711_reg_info)
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static const char *as3711_regulator_of_names[AS3711_REGULATOR_NUM] = {
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[AS3711_REGULATOR_SD_1] = "sd1",
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[AS3711_REGULATOR_SD_2] = "sd2",
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[AS3711_REGULATOR_SD_3] = "sd3",
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[AS3711_REGULATOR_SD_4] = "sd4",
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[AS3711_REGULATOR_LDO_1] = "ldo1",
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[AS3711_REGULATOR_LDO_2] = "ldo2",
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[AS3711_REGULATOR_LDO_3] = "ldo3",
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[AS3711_REGULATOR_LDO_4] = "ldo4",
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[AS3711_REGULATOR_LDO_5] = "ldo5",
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[AS3711_REGULATOR_LDO_6] = "ldo6",
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[AS3711_REGULATOR_LDO_7] = "ldo7",
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[AS3711_REGULATOR_LDO_8] = "ldo8",
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};
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static int as3711_regulator_parse_dt(struct device *dev,
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struct device_node **of_node, const int count)
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{
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struct as3711_regulator_pdata *pdata = dev_get_platdata(dev);
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struct device_node *regulators =
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of_find_node_by_name(dev->parent->of_node, "regulators");
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struct of_regulator_match *matches, *match;
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int ret, i;
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if (!regulators) {
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dev_err(dev, "regulator node not found\n");
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return -ENODEV;
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}
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matches = devm_kzalloc(dev, sizeof(*matches) * count, GFP_KERNEL);
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if (!matches)
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return -ENOMEM;
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for (i = 0, match = matches; i < count; i++, match++) {
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match->name = as3711_regulator_of_names[i];
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match->driver_data = as3711_reg_info + i;
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}
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ret = of_regulator_match(dev->parent, regulators, matches, count);
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of_node_put(regulators);
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if (ret < 0) {
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dev_err(dev, "Error parsing regulator init data: %d\n", ret);
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return ret;
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}
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for (i = 0, match = matches; i < count; i++, match++)
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if (match->of_node) {
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pdata->init_data[i] = match->init_data;
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of_node[i] = match->of_node;
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}
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return 0;
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}
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static int as3711_regulator_probe(struct platform_device *pdev)
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{
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struct as3711_regulator_pdata *pdata = dev_get_platdata(&pdev->dev);
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@ -284,13 +340,24 @@ static int as3711_regulator_probe(struct platform_device *pdev)
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struct regulator_config config = {.dev = &pdev->dev,};
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struct as3711_regulator *reg = NULL;
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struct as3711_regulator *regs;
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struct device_node *of_node[AS3711_REGULATOR_NUM] = {};
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struct regulator_dev *rdev;
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struct as3711_regulator_info *ri;
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int ret;
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int id;
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if (!pdata)
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dev_dbg(&pdev->dev, "No platform data...\n");
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if (!pdata) {
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dev_err(&pdev->dev, "No platform data...\n");
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return -ENODEV;
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}
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if (pdev->dev.parent->of_node) {
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ret = as3711_regulator_parse_dt(&pdev->dev, of_node, AS3711_REGULATOR_NUM);
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if (ret < 0) {
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dev_err(&pdev->dev, "DT parsing failed: %d\n", ret);
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return ret;
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}
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}
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regs = devm_kzalloc(&pdev->dev, AS3711_REGULATOR_NUM *
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sizeof(struct as3711_regulator), GFP_KERNEL);
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@ -300,7 +367,7 @@ static int as3711_regulator_probe(struct platform_device *pdev)
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}
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for (id = 0, ri = as3711_reg_info; id < AS3711_REGULATOR_NUM; ++id, ri++) {
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reg_data = pdata ? pdata->init_data[id] : NULL;
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reg_data = pdata->init_data[id];
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/* No need to register if there is no regulator data */
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if (!reg_data)
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@ -312,6 +379,7 @@ static int as3711_regulator_probe(struct platform_device *pdev)
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config.init_data = reg_data;
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config.driver_data = reg;
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config.regmap = as3711->regmap;
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config.of_node = of_node[id];
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rdev = regulator_register(&ri->desc, &config);
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if (IS_ERR(rdev)) {
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