#include <linux/mfd/s5m87xx/s5m-rtc.h>
#include <linux/regmap.h>
+#ifdef CONFIG_OF
+static struct of_device_id __devinitdata s5m87xx_pmic_dt_match[] = {
+ {.compatible = "samsung,s5m8767-pmic"},
+ {},
+};
+#endif
+
static struct mfd_cell s5m8751_devs[] = {
{
.name = "s5m8751-pmic",
},
};
-int s5m_reg_read(struct s5m87xx_dev *s5m87xx, u8 reg, void *dest)
-{
- return regmap_read(s5m87xx->regmap, reg, dest);
-}
-EXPORT_SYMBOL_GPL(s5m_reg_read);
+static struct regmap_config s5m_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
-int s5m_bulk_read(struct s5m87xx_dev *s5m87xx, u8 reg, int count, u8 *buf)
+static inline int s5m87xx_i2c_get_driver_data(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
{
- return regmap_bulk_read(s5m87xx->regmap, reg, buf, count);
+#ifdef CONFIG_OF
+ if (i2c->dev.of_node) {
+ const struct of_device_id *match;
+ match = of_match_node(s5m87xx_pmic_dt_match, i2c->dev.of_node);
+ return (int)match->data;
+ }
+#endif
+ return (int)id->driver_data;
}
-EXPORT_SYMBOL_GPL(s5m_bulk_read);
-int s5m_reg_write(struct s5m87xx_dev *s5m87xx, u8 reg, u8 value)
+#ifdef CONFIG_OF
+static struct s5m_platform_data *s5m87xx_i2c_parse_dt_pdata(struct device *dev)
{
- return regmap_write(s5m87xx->regmap, reg, value);
-}
-EXPORT_SYMBOL_GPL(s5m_reg_write);
+ struct s5m_platform_data *pd;
-int s5m_bulk_write(struct s5m87xx_dev *s5m87xx, u8 reg, int count, u8 *buf)
+ pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd) {
+ dev_err(dev, "could not allocate memory for pdata\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ if (of_property_read_u32(dev->of_node, "s5m-core,device_type",
+ &pd->device_type)) {
+ dev_warn(dev, "no OF device_type property");
+ }
+ dev_dbg(dev, "OF device_type property = %u", pd->device_type);
+
+ if (of_get_property(dev->of_node, "s5m-core,enable-low-jitter", NULL)) {
+ if (!(pd->device_type == S5M8767X))
+ dev_warn(dev, "no low-jitter for this PMIC type\n");
+ else
+ pd->low_jitter = true;
+ }
+ dev_dbg(dev, "OF low-jitter property: %u\n", pd->low_jitter);
+
+ return pd;
+}
+#else
+static struct s5m_platform_data *s5m87xx_i2c_parse_dt_pdata(struct device *dev)
{
- return regmap_raw_write(s5m87xx->regmap, reg, buf, count);
+ return 0;
}
-EXPORT_SYMBOL_GPL(s5m_bulk_write);
+#endif
-int s5m_reg_update(struct s5m87xx_dev *s5m87xx, u8 reg, u8 val, u8 mask)
+static int s5m87xx_set_low_jitter(struct s5m87xx_dev *s5m87xx)
{
- return regmap_update_bits(s5m87xx->regmap, reg, mask, val);
-}
-EXPORT_SYMBOL_GPL(s5m_reg_update);
+ if (!s5m87xx->pdata->low_jitter)
+ return 0;
-static struct regmap_config s5m_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-};
+ return regmap_update_bits(s5m87xx->pmic, S5M8767_REG_CTRL1,
+ S5M8767_LOW_JITTER_MASK,
+ S5M8767_LOW_JITTER_MASK);
+}
-static int s5m87xx_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static int __devinit s5m87xx_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
{
struct s5m_platform_data *pdata = i2c->dev.platform_data;
struct s5m87xx_dev *s5m87xx;
+ struct i2c_client *rtc_i2c = NULL;
int ret;
s5m87xx = devm_kzalloc(&i2c->dev, sizeof(struct s5m87xx_dev),
i2c_set_clientdata(i2c, s5m87xx);
s5m87xx->dev = &i2c->dev;
- s5m87xx->i2c = i2c;
s5m87xx->irq = i2c->irq;
- s5m87xx->type = id->driver_data;
+ s5m87xx->type = s5m87xx_i2c_get_driver_data(i2c, id);
+
+ if (s5m87xx->dev->of_node) {
+ pdata = s5m87xx_i2c_parse_dt_pdata(s5m87xx->dev);
+ if (IS_ERR(pdata)) {
+ ret = PTR_ERR(pdata);
+ goto err;
+ }
+ }
+ s5m87xx->pdata = pdata;
- if (pdata) {
- s5m87xx->device_type = pdata->device_type;
- s5m87xx->ono = pdata->ono;
- s5m87xx->irq_base = pdata->irq_base;
- s5m87xx->wakeup = pdata->wakeup;
+ if (!pdata) {
+ ret = -ENODEV;
+ dev_warn(s5m87xx->dev, "No platform data found\n");
+ goto err;
}
- s5m87xx->regmap = regmap_init_i2c(i2c, &s5m_regmap_config);
- if (IS_ERR(s5m87xx->regmap)) {
- ret = PTR_ERR(s5m87xx->regmap);
+ s5m87xx->device_type = pdata->device_type;
+ /* TODO(tbroch): address whether we want this addtional interrupt node
+ and add it to DT parsing if yes.
+ */
+ s5m87xx->ono = pdata->ono;
+ /* TODO(tbroch): remove hack below and parse irq_base via DT */
+ s5m87xx->irq_base = pdata->irq_base = MAX77686_IRQ_BASE;
+#ifdef OF_CONFIG
+ s5m87xx->wakeup = i2c->flags & I2C_CLIENT_WAKE;
+#else
+ s5m87xx->wakeup = pdata->wakeup;
+#endif
+
+ s5m87xx->pmic = regmap_init_i2c(i2c, &s5m_regmap_config);
+ if (IS_ERR(s5m87xx->pmic)) {
+ ret = PTR_ERR(s5m87xx->pmic);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
goto err;
}
- s5m87xx->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
- i2c_set_clientdata(s5m87xx->rtc, s5m87xx);
+ rtc_i2c = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
+ i2c_set_clientdata(rtc_i2c, s5m87xx);
+ s5m87xx->rtc = regmap_init_i2c(rtc_i2c, &s5m_regmap_config);
+ if (IS_ERR(s5m87xx->rtc)) {
+ ret = PTR_ERR(s5m87xx->rtc);
+ dev_err(&rtc_i2c->dev, "Failed to allocate register map: %d\n",
+ ret);
+ goto err;
+ }
if (pdata && pdata->cfg_pmic_irq)
pdata->cfg_pmic_irq();
switch (s5m87xx->device_type) {
case S5M8751X:
ret = mfd_add_devices(s5m87xx->dev, -1, s5m8751_devs,
- ARRAY_SIZE(s5m8751_devs), NULL, 0);
+ ARRAY_SIZE(s5m8751_devs), NULL, 0);
break;
case S5M8763X:
ret = mfd_add_devices(s5m87xx->dev, -1, s5m8763_devs,
- ARRAY_SIZE(s5m8763_devs), NULL, 0);
+ ARRAY_SIZE(s5m8763_devs), NULL, 0);
break;
case S5M8767X:
ret = mfd_add_devices(s5m87xx->dev, -1, s5m8767_devs,
- ARRAY_SIZE(s5m8767_devs), NULL, 0);
+ ARRAY_SIZE(s5m8767_devs), NULL, 0);
break;
default:
/* If this happens the probe function is problem */
if (ret < 0)
goto err;
+ if (s5m87xx_set_low_jitter(s5m87xx) < 0) {
+ dev_err(s5m87xx->dev, "failed to configure low-jitter\n");
+ ret = -EIO;
+ goto err;
+ }
+
return ret;
err:
mfd_remove_devices(s5m87xx->dev);
s5m_irq_exit(s5m87xx);
- i2c_unregister_device(s5m87xx->rtc);
- regmap_exit(s5m87xx->regmap);
+ if (rtc_i2c)
+ i2c_unregister_device(rtc_i2c);
+ regmap_exit(s5m87xx->pmic);
+ regmap_exit(s5m87xx->rtc);
return ret;
}
{
struct s5m87xx_dev *s5m87xx = i2c_get_clientdata(i2c);
+ device_init_wakeup(s5m87xx->dev, 0);
+ pm_runtime_set_suspended(s5m87xx->dev);
mfd_remove_devices(s5m87xx->dev);
s5m_irq_exit(s5m87xx);
- i2c_unregister_device(s5m87xx->rtc);
- regmap_exit(s5m87xx->regmap);
+ regmap_exit(s5m87xx->pmic);
+ regmap_exit(s5m87xx->rtc);
return 0;
}
};
MODULE_DEVICE_TABLE(i2c, s5m87xx_i2c_id);
+#ifdef CONFIG_PM
+static int s5m87xx_suspend(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct s5m87xx_dev *s5m87xx = i2c_get_clientdata(i2c);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(s5m87xx->irq);
+
+ return 0;
+}
+
+static int s5m87xx_resume(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct s5m87xx_dev *s5m87xx = i2c_get_clientdata(i2c);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(s5m87xx->irq);
+
+ s5m_irq_resume(s5m87xx);
+ return 0;
+}
+
+const struct dev_pm_ops s5m87xx_pm = {
+ .suspend = s5m87xx_suspend,
+ .resume = s5m87xx_resume,
+};
+#endif
+
static struct i2c_driver s5m87xx_i2c_driver = {
.driver = {
.name = "s5m87xx",
.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &s5m87xx_pm,
+#endif
+ .of_match_table = of_match_ptr(s5m87xx_pmic_dt_match),
},
.probe = s5m87xx_i2c_probe,
.remove = s5m87xx_i2c_remove,
projects / cascardo / linux.git / blobdiff