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authorRobin Murphy <robin.murphy@arm.com>2020-01-12 01:55:03 +0000
committerLee Jones <lee.jones@linaro.org>2020-03-30 07:35:27 +0100
commit7a52cbccee8df0edfee30b81fdbb7d4f9d27ffd5 (patch)
tree2c3e2c763817d77b0900074ad479bc57c96ceae2 /drivers/mfd
parent90df3a8230ef8b02370bb2eb0354fba57ecb2b9d (diff)
mfd: rk808: Reduce shutdown duplication
Rather than having 3 almost-identical functions plus the machinery to keep track of them, it's far simpler to just dynamically select the appropriate register field per variant. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/rk808.c61
1 files changed, 20 insertions, 41 deletions
diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
index 8116ed6cf2e7..b2265c6e94ae 100644
--- a/drivers/mfd/rk808.c
+++ b/drivers/mfd/rk808.c
@@ -448,21 +448,6 @@ static const struct regmap_irq_chip rk818_irq_chip = {
static struct i2c_client *rk808_i2c_client;
-static void rk805_device_shutdown(void)
-{
- int ret;
- struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
-
- if (!rk808)
- return;
-
- ret = regmap_update_bits(rk808->regmap,
- RK805_DEV_CTRL_REG,
- DEV_OFF, DEV_OFF);
- if (ret)
- dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
-}
-
static void rk805_device_shutdown_prepare(void)
{
int ret;
@@ -478,32 +463,29 @@ static void rk805_device_shutdown_prepare(void)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
-static void rk808_device_shutdown(void)
-{
- int ret;
- struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
-
- if (!rk808)
- return;
-
- ret = regmap_update_bits(rk808->regmap,
- RK808_DEVCTRL_REG,
- DEV_OFF_RST, DEV_OFF_RST);
- if (ret)
- dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
-}
-
-static void rk818_device_shutdown(void)
+static void rk808_pm_power_off(void)
{
int ret;
+ unsigned int reg, bit;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
- if (!rk808)
+ switch (rk808->variant) {
+ case RK805_ID:
+ reg = RK805_DEV_CTRL_REG;
+ bit = DEV_OFF;
+ break;
+ case RK808_ID:
+ reg = RK808_DEVCTRL_REG,
+ bit = DEV_OFF_RST;
+ break;
+ case RK818_ID:
+ reg = RK818_DEVCTRL_REG;
+ bit = DEV_OFF;
+ break;
+ default:
return;
-
- ret = regmap_update_bits(rk808->regmap,
- RK818_DEVCTRL_REG,
- DEV_OFF, DEV_OFF);
+ }
+ ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
@@ -592,7 +574,6 @@ static int rk808_probe(struct i2c_client *client,
nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
cells = rk805s;
nr_cells = ARRAY_SIZE(rk805s);
- rk808->pm_pwroff_fn = rk805_device_shutdown;
rk808->pm_pwroff_prep_fn = rk805_device_shutdown_prepare;
break;
case RK808_ID:
@@ -602,7 +583,6 @@ 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);
- rk808->pm_pwroff_fn = rk808_device_shutdown;
break;
case RK818_ID:
rk808->regmap_cfg = &rk818_regmap_config;
@@ -611,7 +591,6 @@ 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);
- rk808->pm_pwroff_fn = rk818_device_shutdown;
break;
case RK809_ID:
case RK817_ID:
@@ -673,7 +652,7 @@ static int rk808_probe(struct i2c_client *client,
if (of_property_read_bool(np, "rockchip,system-power-controller")) {
rk808_i2c_client = client;
- pm_power_off = rk808->pm_pwroff_fn;
+ pm_power_off = rk808_pm_power_off;
pm_power_off_prepare = rk808->pm_pwroff_prep_fn;
}
@@ -694,7 +673,7 @@ static int rk808_remove(struct i2c_client *client)
* pm_power_off may points to a function from another module.
* Check if the pointer is set by us and only then overwrite it.
*/
- if (rk808->pm_pwroff_fn && pm_power_off == rk808->pm_pwroff_fn)
+ if (pm_power_off == rk808_pm_power_off)
pm_power_off = NULL;
/**