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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-20 09:22:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-20 09:22:19 -0800
commit8909ff652ddfc83ecdf450f96629c25489d88f77 (patch)
tree01023e82481e027b7454e97ac2500d214b6cff08 /drivers/mfd
parent88cff241596f29122e9125a41b20d21dfed873cd (diff)
parent2730fd82cbb922e6be8df08ba32c21be41757d3d (diff)
Merge tag 'regulator-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown: "A fairly quiet release for the regulator API, the bulk of the changes being lots of small cleanups and API updates contributed by Axel Lin with just a small set of larger changes: - New driver for LP8755 - DT support for S5M8767, TPS51632, TPS6507x and TPS65090 - Support for writing a "commit changes" bit in the regmap helper functions." * tag 'regulator-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (60 commits) regulator: Fix memory garbage dev_err printout. regulator: max77686: Reuse rdev_get_id() function. regulator: tps51632: Use regulator_[get|set]_voltage_sel_regmap regulator: as3711: Fix checking if no platform initialization data regulator: s5m8767: Prevent possible NULL pointer dereference regulator: s5m8767: Fix dev argument for devm_kzalloc and of_get_regulator_init_data regulator: core: Optimize _regulator_do_set_voltage if voltage does not change regulator: max8998: Let regulator core handle the case selector == old_selector regulator: s5m8767: Use of_get_child_count() regulator: anatop: improve precision of delay time regulator: show state for GPIO-controlled regulators regulator: s5m8767: Fix build in non-DT case regulator: add device tree support for s5m8767 regulator: palmas: Remove a redundant setting for warm_reset regulator: mc13xxx: Use of_get_child_count() regulator: max8997: Use of_get_child_count() regulator: tps65090: Fix using wrong dev argument for calling of_regulator_match regulators: anatop: add set_voltage_time_sel interface regulator: Add missing of_node_put() regulator: tps6507x: Fix using wrong dev argument for calling of_regulator_match ...
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/sec-core.c75
1 files changed, 73 insertions, 2 deletions
diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c
index 49d361a618d0..77ee26ef5941 100644
--- a/drivers/mfd/sec-core.c
+++ b/drivers/mfd/sec-core.c
@@ -17,6 +17,7 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
+#include <linux/of_irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
@@ -60,6 +61,15 @@ static struct mfd_cell s2mps11_devs[] = {
},
};
+#ifdef CONFIG_OF
+static struct of_device_id sec_dt_match[] = {
+ { .compatible = "samsung,s5m8767-pmic",
+ .data = (void *)S5M8767X,
+ },
+ {},
+};
+#endif
+
int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)
{
return regmap_read(sec_pmic->regmap, reg, dest);
@@ -95,6 +105,57 @@ static struct regmap_config sec_regmap_config = {
.val_bits = 8,
};
+
+#ifdef CONFIG_OF
+/*
+ * Only the common platform data elements for s5m8767 are parsed here from the
+ * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
+ * others have to parse their own platform data elements from device tree.
+ *
+ * The s5m8767 platform data structure is instantiated here and the drivers for
+ * the sub-modules need not instantiate another instance while parsing their
+ * platform data.
+ */
+static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
+ struct device *dev)
+{
+ struct sec_platform_data *pd;
+
+ pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd) {
+ dev_err(dev, "could not allocate memory for pdata\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /*
+ * ToDo: the 'wakeup' member in the platform data is more of a linux
+ * specfic information. Hence, there is no binding for that yet and
+ * not parsed here.
+ */
+
+ return pd;
+}
+#else
+static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
+ struct device *dev)
+{
+ return 0;
+}
+#endif
+
+static inline int 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;
+ }
+#endif
+ return (int)id->driver_data;
+}
+
static int sec_pmic_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
@@ -111,13 +172,22 @@ static int sec_pmic_probe(struct i2c_client *i2c,
sec_pmic->dev = &i2c->dev;
sec_pmic->i2c = i2c;
sec_pmic->irq = i2c->irq;
- sec_pmic->type = id->driver_data;
-
+ sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
+
+ if (sec_pmic->dev->of_node) {
+ pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
+ if (IS_ERR(pdata)) {
+ ret = PTR_ERR(pdata);
+ return ret;
+ }
+ pdata->device_type = sec_pmic->type;
+ }
if (pdata) {
sec_pmic->device_type = pdata->device_type;
sec_pmic->ono = pdata->ono;
sec_pmic->irq_base = pdata->irq_base;
sec_pmic->wakeup = pdata->wakeup;
+ sec_pmic->pdata = pdata;
}
sec_pmic->regmap = devm_regmap_init_i2c(i2c, &sec_regmap_config);
@@ -192,6 +262,7 @@ static struct i2c_driver sec_pmic_driver = {
.driver = {
.name = "sec_pmic",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(sec_dt_match),
},
.probe = sec_pmic_probe,
.remove = sec_pmic_remove,