regulator: tps6507x: add device tree support.
Add device tree based initialization support for
TI's tps6507x regulators.
Add device tree binding document for TI's tps6507x
using datasheet:
http://www.ti.com/lit/ds/symlink/tps65070.pdf
Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/tps6507x-regulator.c b/drivers/regulator/tps6507x-regulator.c
index 0233cfb..afdeb65 100644
--- a/drivers/regulator/tps6507x-regulator.c
+++ b/drivers/regulator/tps6507x-regulator.c
@@ -23,8 +23,10 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/tps6507x.h>
+#include <linux/of.h>
#include <linux/slab.h>
#include <linux/mfd/tps6507x.h>
+#include <linux/regulator/of_regulator.h>
/* DCDC's */
#define TPS6507X_DCDC_1 0
@@ -356,6 +358,80 @@
.list_voltage = regulator_list_voltage_table,
};
+#ifdef CONFIG_OF
+static struct of_regulator_match tps6507x_matches[] = {
+ { .name = "VDCDC1"},
+ { .name = "VDCDC2"},
+ { .name = "VDCDC3"},
+ { .name = "LDO1"},
+ { .name = "LDO2"},
+};
+
+static struct tps6507x_board *tps6507x_parse_dt_reg_data(
+ struct platform_device *pdev,
+ struct of_regulator_match **tps6507x_reg_matches)
+{
+ struct tps6507x_board *tps_board;
+ struct device_node *np = pdev->dev.parent->of_node;
+ struct device_node *regulators;
+ struct of_regulator_match *matches;
+ static struct regulator_init_data *reg_data;
+ int idx = 0, count, ret;
+
+ tps_board = devm_kzalloc(&pdev->dev, sizeof(*tps_board),
+ GFP_KERNEL);
+ if (!tps_board) {
+ dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
+ return NULL;
+ }
+
+ regulators = of_find_node_by_name(np, "regulators");
+ if (!regulators) {
+ dev_err(&pdev->dev, "regulator node not found\n");
+ return NULL;
+ }
+
+ count = ARRAY_SIZE(tps6507x_matches);
+ matches = tps6507x_matches;
+
+ ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
+ ret);
+ return NULL;
+ }
+
+ *tps6507x_reg_matches = matches;
+
+ reg_data = devm_kzalloc(&pdev->dev, (sizeof(struct regulator_init_data)
+ * TPS6507X_NUM_REGULATOR), GFP_KERNEL);
+ if (!reg_data) {
+ dev_err(&pdev->dev, "Failure to alloc init data for regulators.\n");
+ return NULL;
+ }
+
+ tps_board->tps6507x_pmic_init_data = reg_data;
+
+ for (idx = 0; idx < count; idx++) {
+ if (!matches[idx].init_data || !matches[idx].of_node)
+ continue;
+
+ memcpy(®_data[idx], matches[idx].init_data,
+ sizeof(struct regulator_init_data));
+
+ }
+
+ return tps_board;
+}
+#else
+static inline struct tps6507x_board *tps6507x_parse_dt_reg_data(
+ struct platform_device *pdev,
+ struct of_regulator_match **tps6507x_reg_matches)
+{
+ *tps6507x_reg_matches = NULL;
+ return NULL;
+}
+#endif
static int tps6507x_pmic_probe(struct platform_device *pdev)
{
struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
@@ -365,8 +441,10 @@
struct regulator_dev *rdev;
struct tps6507x_pmic *tps;
struct tps6507x_board *tps_board;
+ struct of_regulator_match *tps6507x_reg_matches = NULL;
int i;
int error;
+ unsigned int prop;
/**
* tps_board points to pmic related constants
@@ -374,6 +452,9 @@
*/
tps_board = dev_get_platdata(tps6507x_dev->dev);
+ if (!tps_board && tps6507x_dev->dev->of_node)
+ tps_board = tps6507x_parse_dt_reg_data(pdev,
+ &tps6507x_reg_matches);
if (!tps_board)
return -EINVAL;
@@ -415,6 +496,17 @@
config.init_data = init_data;
config.driver_data = tps;
+ if (tps6507x_reg_matches) {
+ error = of_property_read_u32(
+ tps6507x_reg_matches[i].of_node,
+ "ti,defdcdc_default", &prop);
+
+ if (!error)
+ tps->info[i]->defdcdc_default = prop;
+
+ config.of_node = tps6507x_reg_matches[i].of_node;
+ }
+
rdev = regulator_register(&tps->desc[i], &config);
if (IS_ERR(rdev)) {
dev_err(tps6507x_dev->dev,