summaryrefslogtreecommitdiffstats
path: root/drivers/mfd/sec-core.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mfd/sec-core.c')
-rw-r--r--drivers/mfd/sec-core.c62
1 files changed, 52 insertions, 10 deletions
diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c
index 54cc255..e467108 100644
--- a/drivers/mfd/sec-core.c
+++ b/drivers/mfd/sec-core.c
@@ -31,7 +31,7 @@
#include <linux/mfd/samsung/s5m8767.h>
#include <linux/regmap.h>
-static struct mfd_cell s5m8751_devs[] = {
+static const struct mfd_cell s5m8751_devs[] = {
{
.name = "s5m8751-pmic",
}, {
@@ -41,7 +41,7 @@ static struct mfd_cell s5m8751_devs[] = {
},
};
-static struct mfd_cell s5m8763_devs[] = {
+static const struct mfd_cell s5m8763_devs[] = {
{
.name = "s5m8763-pmic",
}, {
@@ -51,15 +51,17 @@ static struct mfd_cell s5m8763_devs[] = {
},
};
-static struct mfd_cell s5m8767_devs[] = {
+static const struct mfd_cell s5m8767_devs[] = {
{
.name = "s5m8767-pmic",
}, {
.name = "s5m-rtc",
- },
+ }, {
+ .name = "s5m8767-clk",
+ }
};
-static struct mfd_cell s2mps11_devs[] = {
+static const struct mfd_cell s2mps11_devs[] = {
{
.name = "s2mps11-pmic",
}, {
@@ -134,12 +136,12 @@ static bool s5m8763_volatile(struct device *dev, unsigned int reg)
}
}
-static struct regmap_config sec_regmap_config = {
+static const struct regmap_config sec_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
-static struct regmap_config s2mps11_regmap_config = {
+static const struct regmap_config s2mps11_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -148,7 +150,7 @@ static struct regmap_config s2mps11_regmap_config = {
.cache_type = REGCACHE_FLAT,
};
-static struct regmap_config s5m8763_regmap_config = {
+static const struct regmap_config s5m8763_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -157,7 +159,7 @@ static struct regmap_config s5m8763_regmap_config = {
.cache_type = REGCACHE_FLAT,
};
-static struct regmap_config s5m8767_regmap_config = {
+static const struct regmap_config s5m8767_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -204,7 +206,7 @@ static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
struct device *dev)
{
- return 0;
+ return NULL;
}
#endif
@@ -323,6 +325,8 @@ static int sec_pmic_probe(struct i2c_client *i2c,
if (ret)
goto err;
+ device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
+
return ret;
err:
@@ -341,6 +345,43 @@ static int sec_pmic_remove(struct i2c_client *i2c)
return 0;
}
+static int sec_pmic_suspend(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
+
+ if (device_may_wakeup(dev)) {
+ enable_irq_wake(sec_pmic->irq);
+ /*
+ * PMIC IRQ must be disabled during suspend for RTC alarm
+ * to work properly.
+ * When device is woken up from suspend by RTC Alarm, an
+ * interrupt occurs before resuming I2C bus controller.
+ * The interrupt is handled by regmap_irq_thread which tries
+ * to read RTC registers. This read fails (I2C is still
+ * suspended) and RTC Alarm interrupt is disabled.
+ */
+ disable_irq(sec_pmic->irq);
+ }
+
+ return 0;
+}
+
+static int sec_pmic_resume(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
+
+ if (device_may_wakeup(dev)) {
+ disable_irq_wake(sec_pmic->irq);
+ enable_irq(sec_pmic->irq);
+ }
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
+
static const struct i2c_device_id sec_pmic_id[] = {
{ "sec_pmic", 0 },
{ }
@@ -351,6 +392,7 @@ static struct i2c_driver sec_pmic_driver = {
.driver = {
.name = "sec_pmic",
.owner = THIS_MODULE,
+ .pm = &sec_pmic_pm_ops,
.of_match_table = of_match_ptr(sec_dt_match),
},
.probe = sec_pmic_probe,
OpenPOWER on IntegriCloud