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author | Shawn Guo <shawn.guo@linaro.org> | 2011-12-21 23:00:46 +0800 |
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committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-12-22 11:10:45 +0000 |
commit | 93bcb23b38f634e8fb4ddda0d3f4862fda5cedae (patch) | |
tree | 9f087497a7511022c8e740c3e16bb3703efc4fda /drivers/regulator/mc13xxx-regulator-core.c | |
parent | 3a5d03158d0174ae700e15b63eab2023f27aeb88 (diff) | |
download | op-kernel-dev-93bcb23b38f634e8fb4ddda0d3f4862fda5cedae.zip op-kernel-dev-93bcb23b38f634e8fb4ddda0d3f4862fda5cedae.tar.gz |
regulator: mc13892: add device tree probe support
It adds device tree probe support for mc13892-regulator driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator/mc13xxx-regulator-core.c')
-rw-r--r-- | drivers/regulator/mc13xxx-regulator-core.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/regulator/mc13xxx-regulator-core.c b/drivers/regulator/mc13xxx-regulator-core.c index 6532853..80ecafe 100644 --- a/drivers/regulator/mc13xxx-regulator-core.c +++ b/drivers/regulator/mc13xxx-regulator-core.c @@ -18,12 +18,14 @@ #include <linux/mfd/mc13xxx.h> #include <linux/regulator/machine.h> #include <linux/regulator/driver.h> +#include <linux/regulator/of_regulator.h> #include <linux/platform_device.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/err.h> #include <linux/module.h> +#include <linux/of.h> #include "mc13xxx.h" static int mc13xxx_regulator_enable(struct regulator_dev *rdev) @@ -236,6 +238,61 @@ int mc13xxx_sw_regulator_is_enabled(struct regulator_dev *rdev) } EXPORT_SYMBOL_GPL(mc13xxx_sw_regulator_is_enabled); +#ifdef CONFIG_OF +int __devinit mc13xxx_get_num_regulators_dt(struct platform_device *pdev) +{ + struct device_node *parent, *child; + int num = 0; + + of_node_get(pdev->dev.parent->of_node); + parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators"); + if (!parent) + return -ENODEV; + + for_each_child_of_node(parent, child) + num++; + + return num; +} + +struct mc13xxx_regulator_init_data * __devinit mc13xxx_parse_regulators_dt( + struct platform_device *pdev, struct mc13xxx_regulator *regulators, + int num_regulators) +{ + struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev); + struct mc13xxx_regulator_init_data *data, *p; + struct device_node *parent, *child; + int i; + + of_node_get(pdev->dev.parent->of_node); + parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators"); + if (!parent) + return NULL; + + data = devm_kzalloc(&pdev->dev, sizeof(*data) * priv->num_regulators, + GFP_KERNEL); + if (!data) + return NULL; + p = data; + + for_each_child_of_node(parent, child) { + for (i = 0; i < num_regulators; i++) { + if (!of_node_cmp(child->name, + regulators[i].desc.name)) { + p->id = i; + p->init_data = of_get_regulator_init_data( + &pdev->dev, child); + p->node = child; + p++; + break; + } + } + } + + return data; +} +#endif + MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Yong Shen <yong.shen@linaro.org>"); MODULE_DESCRIPTION("Regulator Driver for Freescale MC13xxx PMIC"); |