diff options
| author | Qing Xu <qingx@marvell.com> | 2012-11-19 11:39:12 +0400 |
|---|---|---|
| committer | Anton Vorontsov <anton.vorontsov@linaro.org> | 2012-11-19 11:54:07 +0400 |
| commit | eba3b670a9166a91be5a11fe33290dca6b9457a2 (patch) | |
| tree | 87d10931f4212eeb01639c386c9b5a61654c723e /drivers/power | |
| parent | a12810ab9fcf0c9fd5e50b5e350a3ffbeaa571be (diff) | |
| download | linux-eba3b670a9166a91be5a11fe33290dca6b9457a2.tar.xz | |
max8925_power: Add support for device-tree initialization
This patch adds support for initializing platform data from the
device-tree description.
Signed-off-by: Qing Xu <qingx@marvell.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/max8925_power.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c index daa333bd7ebb..b5a3ccb16a14 100644 --- a/drivers/power/max8925_power.c +++ b/drivers/power/max8925_power.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/err.h> #include <linux/slab.h> +#include <linux/of.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/platform_device.h> @@ -426,6 +427,54 @@ static __devexit int max8925_deinit_charger(struct max8925_power_info *info) return 0; } +#ifdef CONFIG_OF +static struct max8925_power_pdata * +max8925_power_dt_init(struct platform_device *pdev) +{ + struct device_node *nproot = pdev->dev.parent->of_node; + struct device_node *np; + int batt_detect; + int topoff_threshold; + int fast_charge; + int no_temp_support; + int no_insert_detect; + struct max8925_power_pdata *pdata; + + if (!nproot) + return pdev->dev.platform_data; + + np = of_find_node_by_name(nproot, "charger"); + if (!np) { + dev_err(&pdev->dev, "failed to find charger node\n"); + return NULL; + } + + pdata = devm_kzalloc(&pdev->dev, + sizeof(struct max8925_power_pdata), + GFP_KERNEL); + + of_property_read_u32(np, "topoff-threshold", &topoff_threshold); + of_property_read_u32(np, "batt-detect", &batt_detect); + of_property_read_u32(np, "fast-charge", &fast_charge); + of_property_read_u32(np, "no-insert-detect", &no_insert_detect); + of_property_read_u32(np, "no-temp-support", &no_temp_support); + + pdata->batt_detect = batt_detect; + pdata->fast_charge = fast_charge; + pdata->topoff_threshold = topoff_threshold; + pdata->no_insert_detect = no_insert_detect; + pdata->no_temp_support = no_temp_support; + + return pdata; +} +#else +static struct max8925_power_pdata * +max8925_power_dt_init(struct platform_device *pdev) +{ + return pdev->dev.platform_data; +} +#endif + static __devinit int max8925_power_probe(struct platform_device *pdev) { struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent); @@ -433,7 +482,7 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) struct max8925_power_info *info; int ret; - pdata = pdev->dev.platform_data; + pdata = max8925_power_dt_init(pdev); if (!pdata) { dev_err(&pdev->dev, "platform data isn't assigned to " "power supply\n"); |