Signed-off-by: Chris Zhong <zyw@xxxxxxxxxxxxxx>
Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
---
Changes in v10: None
Changes in v9:
Adviced by Doug
- add reg_np
Changes in v8:
Adviced by Doug
- remove rk808_regulator_dts() function
- remove the check about "client->dev.of_node"
Changes in v7:
- remove pdata struct from header file, add rk808_regulator struct
Changes in v6:
- remove the redundant code
Changes in v5:
- re-edit base on Mark's branch
Changes in v4:
- use &client->dev replace rk808->dev
Changes in v3: None
Changes in v2:
Adviced by Mark Browm:
- change of_find_node_by_name to find_child_by_name
- use RK808_NUM_REGULATORS as the name of the constant
- create a pdata when missing platform data
- use the rk808_reg name to supply_regulator name
- replace regulator_register with devm_regulator_register
- some other problem with coding style
drivers/regulator/rk808-regulator.c | 89 +++++++----------------------------
1 file changed, 17 insertions(+), 72 deletions(-)
diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c
index e372008..d91f2b6 100644
--- a/drivers/regulator/rk808-regulator.c
+++ b/drivers/regulator/rk808-regulator.c
@@ -14,24 +14,16 @@
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
- *
*/
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/i2c.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
#include <linux/mfd/rk808.h>
-#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
-#include <linux/regmap.h>
-#include <linux/slab.h>
-/*
- * Field Definitions.
- */
+
+/* Field Definitions */
#define RK808_BUCK_VSEL_MASK 0x3f
#define RK808_BUCK4_VSEL_MASK 0xf
#define RK808_LDO_VSEL_MASK 0x1f
@@ -50,10 +42,6 @@ static const int buck_contr_base_addr[] = {
RK808_BUCK4_CONFIG_REG,
};
-#define rk808_BUCK_SET_VOL_REG(x) (buck_set_vol_base_addr[x])
-#define rk808_BUCK_CONTR_REG(x) (buck_contr_base_addr[x])
-#define rk808_LDO_SET_VOL_REG(x) (ldo_set_vol_base_addr[x])
-
static const int ldo_set_vol_base_addr[] = {
RK808_LDO1_ON_VSEL_REG,
RK808_LDO2_ON_VSEL_REG,
@@ -65,9 +53,7 @@ static const int ldo_set_vol_base_addr[] = {
RK808_LDO8_ON_VSEL_REG,
};
-/*
- * rk808 voltage number
- */
+/* rk808 voltage number */
static const struct regulator_linear_range rk808_buck_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(700000, 0, 63, 12500),
};
@@ -308,77 +294,35 @@ static struct of_regulator_match rk808_reg_matches[] = {
[RK808_ID_SWITCH2] = { .name = "SWITCH_REG2" },
};
-static int rk808_regulator_dts(struct i2c_client *client,
- struct rk808_board *pdata)
-{
- struct device_node *np, *reg_np;
- int i, ret;
-
- np = client->dev.of_node;
- if (!np) {
- dev_err(&client->dev, "could not find pmic sub-node\n");
- return -ENXIO;
- }
-
- reg_np = of_get_child_by_name(np, "regulators");
- if (!reg_np)
- return -ENXIO;
-
- ret = of_regulator_match(&client->dev, reg_np, rk808_reg_matches,
- RK808_NUM_REGULATORS);
- if (ret < 0) {
- dev_err(&client->dev,
- "failed to parse regulator data: %d\n", ret);
- return ret;
- }
-
- for (i = 0; i < RK808_NUM_REGULATORS; i++) {
- if (!rk808_reg_matches[i].init_data ||
- !rk808_reg_matches[i].of_node)
- continue;
-
- pdata->rk808_init_data[i] = rk808_reg_matches[i].init_data;
- pdata->of_node[i] = rk808_reg_matches[i].of_node;
- }
-
- return 0;
-}
-
static int rk808_regulator_probe(struct platform_device *pdev)
{
struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
struct i2c_client *client = rk808->i2c;
- struct rk808_board *pdata = dev_get_platdata(&client->dev);
+ struct device_node *reg_np;
struct regulator_config config = {};
struct regulator_dev *rk808_rdev;
- struct regulator_init_data *reg_data;
- int i = 0;
- int ret = 0;
+ int ret, i;
- if (!pdata) {
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
- }
+ reg_np = of_get_child_by_name(client->dev.of_node, "regulators");
+ if (!reg_np)
+ return -ENXIO;
- ret = rk808_regulator_dts(client, pdata);
- if (ret)
+ ret = of_regulator_match(&client->dev, reg_np, rk808_reg_matches,
+ RK808_NUM_REGULATORS);
+ if (ret < 0)
return ret;
/* Instantiate the regulators */
for (i = 0; i < RK808_NUM_REGULATORS; i++) {
- reg_data = pdata->rk808_init_data[i];
- if (!reg_data)
+ if (!rk808_reg_matches[i].init_data ||
+ !rk808_reg_matches[i].of_node)
continue;
config.dev = &client->dev;
config.driver_data = rk808;
config.regmap = rk808->regmap;
-
- if (client->dev.of_node)
- config.of_node = pdata->of_node[i];
-
- config.init_data = reg_data;
+ config.of_node = rk808_reg_matches[i].of_node;
+ config.init_data = rk808_reg_matches[i].init_data;
rk808_rdev = devm_regulator_register(&pdev->dev,
&rk808_reg[i], &config);
@@ -388,6 +332,7 @@ static int rk808_regulator_probe(struct platform_device *pdev)
return PTR_ERR(rk808_rdev);
}
}
+
return 0;
}
@@ -403,6 +348,6 @@ module_platform_driver(rk808_regulator_driver);
MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs");
MODULE_AUTHOR("Chris Zhong<zyw@xxxxxxxxxxxxxx>");
-MODULE_AUTHOR("Zhang Qing<zhanqging@xxxxxxxxxxxxxx>");
+MODULE_AUTHOR("Zhang Qing<zhangqing@xxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:rk808-regulator");
--
1.7.9.5
--
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