diff options
Diffstat (limited to 'drivers/power')
-rw-r--r-- | drivers/power/reset/syscon-poweroff.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/power/reset/syscon-poweroff.c b/drivers/power/reset/syscon-poweroff.c index 1b2ce7734260..19c8da997b4c 100644 --- a/drivers/power/reset/syscon-poweroff.c +++ b/drivers/power/reset/syscon-poweroff.c @@ -15,15 +15,19 @@ #include <linux/pm.h> #include <linux/regmap.h> -static struct regmap *map; -static u32 offset; -static u32 value; -static u32 mask; +struct syscon_poweroff_data { + struct regmap *map; + u32 offset; + u32 value; + u32 mask; +}; + +static struct syscon_poweroff_data *data; static void syscon_poweroff(void) { /* Issue the poweroff */ - regmap_update_bits(map, offset, mask, value); + regmap_update_bits(data->map, data->offset, data->mask, data->value); mdelay(1000); @@ -35,22 +39,26 @@ static int syscon_poweroff_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; int mask_err, value_err; - map = syscon_regmap_lookup_by_phandle(dev->of_node, "regmap"); - if (IS_ERR(map)) { - map = syscon_node_to_regmap(dev->parent->of_node); - if (IS_ERR(map)) { + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->map = syscon_regmap_lookup_by_phandle(dev->of_node, "regmap"); + if (IS_ERR(data->map)) { + data->map = syscon_node_to_regmap(dev->parent->of_node); + if (IS_ERR(data->map)) { dev_err(dev, "unable to get syscon"); - return PTR_ERR(map); + return PTR_ERR(data->map); } } - if (of_property_read_u32(dev->of_node, "offset", &offset)) { + if (of_property_read_u32(dev->of_node, "offset", &data->offset)) { dev_err(dev, "unable to read 'offset'"); return -EINVAL; } - value_err = of_property_read_u32(dev->of_node, "value", &value); - mask_err = of_property_read_u32(dev->of_node, "mask", &mask); + value_err = of_property_read_u32(dev->of_node, "value", &data->value); + mask_err = of_property_read_u32(dev->of_node, "mask", &data->mask); if (value_err && mask_err) { dev_err(dev, "unable to read 'value' and 'mask'"); return -EINVAL; @@ -58,11 +66,11 @@ static int syscon_poweroff_probe(struct platform_device *pdev) if (value_err) { /* support old binding */ - value = mask; - mask = 0xFFFFFFFF; + data->value = data->mask; + data->mask = 0xFFFFFFFF; } else if (mask_err) { /* support value without mask*/ - mask = 0xFFFFFFFF; + data->mask = 0xFFFFFFFF; } if (pm_power_off) { |