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authorJianhong Chen <chenjh@rock-chips.com>2016-10-17 17:03:10 +0800
committerLee Jones <lee.jones@linaro.org>2016-11-29 08:21:24 +0000
commitb2e2c85091710159b305735d557f4ef4695f5dff (patch)
tree522fbbd5f098279e3bbafb8ffb6c9c0f3e3b34fa /drivers/mfd/rk808.c
parenta893764ca8693429ae130c3ff01f2cf3bcfb0d05 (diff)
mfd: rk808: RK818 uses DEV_OFF to power off supplies
DEV_OFF and DEV_OFF_RST functions for RK808 are designed error that only DEV_OFF_RST can power off supplies. RK818 has been fixed this issue, so that DEV_OFF is used to power off supplies. Signed-off-by: Jianhong Chen <chenjh@rock-chips.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/rk808.c')
-rw-r--r--drivers/mfd/rk808.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
index 0f8acc5882a4..2c9acdba7c2d 100644
--- a/drivers/mfd/rk808.c
+++ b/drivers/mfd/rk808.c
@@ -290,6 +290,24 @@ static void rk808_device_shutdown(void)
dev_err(&rk808_i2c_client->dev, "power off error!\n");
}
+static void rk818_device_shutdown(void)
+{
+ int ret;
+ struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
+
+ if (!rk808) {
+ dev_warn(&rk808_i2c_client->dev,
+ "have no rk818, so do nothing here\n");
+ return;
+ }
+
+ ret = regmap_update_bits(rk808->regmap,
+ RK818_DEVCTRL_REG,
+ DEV_OFF, DEV_OFF);
+ if (ret)
+ dev_err(&rk808_i2c_client->dev, "power off error!\n");
+}
+
static const struct of_device_id rk808_of_match[] = {
{ .compatible = "rockchip,rk808" },
{ .compatible = "rockchip,rk818" },
@@ -304,6 +322,7 @@ static int rk808_probe(struct i2c_client *client,
struct rk808 *rk808;
const struct rk808_reg_data *pre_init_reg;
const struct mfd_cell *cells;
+ void (*pm_pwroff_fn)(void);
int nr_pre_init_regs;
int nr_cells;
int pm_off = 0;
@@ -331,6 +350,7 @@ static int rk808_probe(struct i2c_client *client,
nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
cells = rk808s;
nr_cells = ARRAY_SIZE(rk808s);
+ pm_pwroff_fn = rk808_device_shutdown;
break;
case RK818_ID:
rk808->regmap_cfg = &rk818_regmap_config;
@@ -339,6 +359,7 @@ static int rk808_probe(struct i2c_client *client,
nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
cells = rk818s;
nr_cells = ARRAY_SIZE(rk818s);
+ pm_pwroff_fn = rk818_device_shutdown;
break;
default:
dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
@@ -393,7 +414,7 @@ static int rk808_probe(struct i2c_client *client,
"rockchip,system-power-controller");
if (pm_off && !pm_power_off) {
rk808_i2c_client = client;
- pm_power_off = rk808_device_shutdown;
+ pm_power_off = pm_pwroff_fn;
}
return 0;