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Diffstat (limited to 'drivers/mfd/sec-core.c')
-rw-r--r--drivers/mfd/sec-core.c176
1 files changed, 156 insertions, 20 deletions
diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c
index 1d158d5ba8b8..281a82747275 100644
--- a/drivers/mfd/sec-core.c
+++ b/drivers/mfd/sec-core.c
@@ -26,12 +26,14 @@
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/irq.h>
#include <linux/mfd/samsung/rtc.h>
+#include <linux/mfd/samsung/s2mpa01.h>
#include <linux/mfd/samsung/s2mps11.h>
+#include <linux/mfd/samsung/s2mps14.h>
#include <linux/mfd/samsung/s5m8763.h>
#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 +43,7 @@ static struct mfd_cell s5m8751_devs[] = {
},
};
-static struct mfd_cell s5m8763_devs[] = {
+static const struct mfd_cell s5m8763_devs[] = {
{
.name = "s5m8763-pmic",
}, {
@@ -51,15 +53,17 @@ 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",
}, {
@@ -67,18 +71,53 @@ static struct mfd_cell s2mps11_devs[] = {
}
};
+static const struct mfd_cell s2mps14_devs[] = {
+ {
+ .name = "s2mps14-pmic",
+ }, {
+ .name = "s2mps14-rtc",
+ }, {
+ .name = "s2mps14-clk",
+ }
+};
+
+static const struct mfd_cell s2mpa01_devs[] = {
+ {
+ .name = "s2mpa01-pmic",
+ },
+};
+
#ifdef CONFIG_OF
static struct of_device_id sec_dt_match[] = {
{ .compatible = "samsung,s5m8767-pmic",
.data = (void *)S5M8767X,
- },
- { .compatible = "samsung,s2mps11-pmic",
+ }, {
+ .compatible = "samsung,s2mps11-pmic",
.data = (void *)S2MPS11X,
+ }, {
+ .compatible = "samsung,s2mps14-pmic",
+ .data = (void *)S2MPS14X,
+ }, {
+ .compatible = "samsung,s2mpa01-pmic",
+ .data = (void *)S2MPA01,
+ }, {
+ /* Sentinel */
},
- {},
};
#endif
+static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case S2MPA01_REG_INT1M:
+ case S2MPA01_REG_INT2M:
+ case S2MPA01_REG_INT3M:
+ return false;
+ default:
+ return true;
+ }
+}
+
static bool s2mps11_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
@@ -104,12 +143,21 @@ 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 s2mpa01_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = S2MPA01_REG_LDO_OVCB4,
+ .volatile_reg = s2mpa01_volatile,
+ .cache_type = REGCACHE_FLAT,
+};
+
+static const struct regmap_config s2mps11_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -118,7 +166,16 @@ static struct regmap_config s2mps11_regmap_config = {
.cache_type = REGCACHE_FLAT,
};
-static struct regmap_config s5m8763_regmap_config = {
+static const struct regmap_config s2mps14_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = S2MPS14_REG_LDODSCH3,
+ .volatile_reg = s2mps11_volatile,
+ .cache_type = REGCACHE_FLAT,
+};
+
+static const struct regmap_config s5m8763_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -127,7 +184,7 @@ 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,
@@ -136,9 +193,18 @@ static struct regmap_config s5m8767_regmap_config = {
.cache_type = REGCACHE_FLAT,
};
-static const struct regmap_config sec_rtc_regmap_config = {
+static const struct regmap_config s5m_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
+
+ .max_register = SEC_RTC_REG_MAX,
+};
+
+static const struct regmap_config s2mps14_rtc_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = S2MPS_RTC_REG_MAX,
};
#ifdef CONFIG_OF
@@ -174,28 +240,28 @@ 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
-static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
+static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
#ifdef CONFIG_OF
if (i2c->dev.of_node) {
const struct of_device_id *match;
match = of_match_node(sec_dt_match, i2c->dev.of_node);
- return (int)match->data;
+ return (unsigned long)match->data;
}
#endif
- return (int)id->driver_data;
+ return id->driver_data;
}
static int sec_pmic_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
- const struct regmap_config *regmap;
+ const struct regmap_config *regmap, *regmap_rtc;
struct sec_pmic_dev *sec_pmic;
int ret;
@@ -227,17 +293,34 @@ static int sec_pmic_probe(struct i2c_client *i2c,
}
switch (sec_pmic->device_type) {
+ case S2MPA01:
+ regmap = &s2mpa01_regmap_config;
+ break;
case S2MPS11X:
regmap = &s2mps11_regmap_config;
+ /*
+ * The rtc-s5m driver does not support S2MPS11 and there
+ * is no mfd_cell for S2MPS11 RTC device.
+ * However we must pass something to devm_regmap_init_i2c()
+ * so use S5M-like regmap config even though it wouldn't work.
+ */
+ regmap_rtc = &s5m_rtc_regmap_config;
+ break;
+ case S2MPS14X:
+ regmap = &s2mps14_regmap_config;
+ regmap_rtc = &s2mps14_rtc_regmap_config;
break;
case S5M8763X:
regmap = &s5m8763_regmap_config;
+ regmap_rtc = &s5m_rtc_regmap_config;
break;
case S5M8767X:
regmap = &s5m8767_regmap_config;
+ regmap_rtc = &s5m_rtc_regmap_config;
break;
default:
regmap = &sec_regmap_config;
+ regmap_rtc = &s5m_rtc_regmap_config;
break;
}
@@ -250,10 +333,13 @@ static int sec_pmic_probe(struct i2c_client *i2c,
}
sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
+ if (!sec_pmic->rtc) {
+ dev_err(&i2c->dev, "Failed to allocate I2C for RTC\n");
+ return -ENODEV;
+ }
i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
- sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc,
- &sec_rtc_regmap_config);
+ sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, regmap_rtc);
if (IS_ERR(sec_pmic->regmap_rtc)) {
ret = PTR_ERR(sec_pmic->regmap_rtc);
dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",
@@ -281,10 +367,18 @@ static int sec_pmic_probe(struct i2c_client *i2c,
ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
break;
+ case S2MPA01:
+ ret = mfd_add_devices(sec_pmic->dev, -1, s2mpa01_devs,
+ ARRAY_SIZE(s2mpa01_devs), NULL, 0, NULL);
+ break;
case S2MPS11X:
ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
break;
+ case S2MPS14X:
+ ret = mfd_add_devices(sec_pmic->dev, -1, s2mps14_devs,
+ ARRAY_SIZE(s2mps14_devs), NULL, 0, NULL);
+ break;
default:
/* If this happens the probe function is problem */
BUG();
@@ -293,6 +387,8 @@ 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:
@@ -311,6 +407,45 @@ static int sec_pmic_remove(struct i2c_client *i2c)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+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;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+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 },
{ }
@@ -321,6 +456,7 @@ 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,
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-04-10 02:39:12 +0000