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Date: Mon, 26 Mar 2012 13:46:44 +0800
From: Axel Lin <axel.lin@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Marcus Folkesson <marcus.folkesson@...il.com>,
Anuj Aggarwal <anuj.aggarwal@...com>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>,
Liam Girdwood <lrg@...com>
Subject: [PATCH RFT] regulator: Convert tps65023 to set_voltage_sel
This patch also changes the define for TPS65023_LDO_CTRL_LDOx_MASK,
because regmap_update_bits actually does:
(orig & ~mask) | (val & mask)
This change makes the code consists for all regmap_update_bits calls.
Also removes some uninformative comments.
Signed-off-by: Axel Lin <axel.lin@...il.com>
---
drivers/regulator/tps65023-regulator.c | 107 ++++++-------------------------
1 files changed, 21 insertions(+), 86 deletions(-)
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
index 43e4902..08b3b41 100644
--- a/drivers/regulator/tps65023-regulator.c
+++ b/drivers/regulator/tps65023-regulator.c
@@ -72,7 +72,7 @@
/* LDO_CTRL bitfields */
#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4)
-#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4))
+#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0x0F << ((ldo_id)*4))
/* Number of step-down converters available */
#define TPS65023_NUM_DCDC 3
@@ -261,50 +261,28 @@ static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
return tps->info[dcdc]->min_uV;
}
-static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV,
- unsigned *selector)
+static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
+ unsigned selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
- int vsel;
int ret;
if (dcdc != tps->core_regulator)
return -EINVAL;
- if (min_uV < tps->info[dcdc]->min_uV
- || min_uV > tps->info[dcdc]->max_uV)
- return -EINVAL;
- if (max_uV < tps->info[dcdc]->min_uV
- || max_uV > tps->info[dcdc]->max_uV)
- return -EINVAL;
-
- for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
- int mV = tps->info[dcdc]->table[vsel];
- int uV = mV * 1000;
-
- /* Break at the first in-range value */
- if (min_uV <= uV && uV <= max_uV)
- break;
- }
- *selector = vsel;
-
- if (vsel == tps->info[dcdc]->table_len)
- goto failed;
-
- ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, vsel);
+ ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, selector);
+ if (ret)
+ goto out;
/* Tell the chip that we have changed the value in DEFCORE
* and its time to update the core voltage
*/
- regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
- TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);
+ ret = regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
+ TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);
+out:
return ret;
-
-failed:
- return -EINVAL;
}
static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
@@ -325,42 +303,15 @@ static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
return tps->info[ldo]->table[data] * 1000;
}
-static int tps65023_ldo_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV, unsigned *selector)
+static int tps65023_ldo_set_voltage_sel(struct regulator_dev *dev,
+ unsigned selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
- int data, vsel, ldo = rdev_get_id(dev);
- int ret;
-
- if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
- return -EINVAL;
-
- if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
- return -EINVAL;
- if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
- return -EINVAL;
+ int ldo_index = rdev_get_id(dev) - TPS65023_LDO_1;
- for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
- int mV = tps->info[ldo]->table[vsel];
- int uV = mV * 1000;
-
- /* Break at the first in-range value */
- if (min_uV <= uV && uV <= max_uV)
- break;
- }
-
- if (vsel == tps->info[ldo]->table_len)
- return -EINVAL;
-
- *selector = vsel;
-
- ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data);
- if (ret != 0)
- return ret;
-
- data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1);
- data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)));
- return regmap_write(tps->regmap, TPS65023_REG_LDO_CTRL, data);
+ return regmap_update_bits(tps->regmap, TPS65023_REG_LDO_CTRL,
+ TPS65023_LDO_CTRL_LDOx_MASK(ldo_index),
+ selector << TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_index));
}
static int tps65023_dcdc_list_voltage(struct regulator_dev *dev,
@@ -402,7 +353,7 @@ static struct regulator_ops tps65023_dcdc_ops = {
.enable = tps65023_dcdc_enable,
.disable = tps65023_dcdc_disable,
.get_voltage = tps65023_dcdc_get_voltage,
- .set_voltage = tps65023_dcdc_set_voltage,
+ .set_voltage_sel = tps65023_dcdc_set_voltage_sel,
.list_voltage = tps65023_dcdc_list_voltage,
};
@@ -412,7 +363,7 @@ static struct regulator_ops tps65023_ldo_ops = {
.enable = tps65023_ldo_enable,
.disable = tps65023_ldo_disable,
.get_voltage = tps65023_ldo_get_voltage,
- .set_voltage = tps65023_ldo_set_voltage,
+ .set_voltage_sel = tps65023_ldo_set_voltage_sel,
.list_voltage = tps65023_ldo_list_voltage,
};
@@ -503,12 +454,6 @@ static int __devinit tps_65023_probe(struct i2c_client *client,
return error;
}
-/**
- * tps_65023_remove - TPS65023 driver i2c remove handler
- * @client: i2c driver client device structure
- *
- * Unregister TPS driver as an i2c client device driver
- */
static int __devexit tps_65023_remove(struct i2c_client *client)
{
struct tps_pmic *tps = i2c_get_clientdata(client);
@@ -638,13 +583,13 @@ static struct tps_driver_data tps65020_drv_data = {
};
static struct tps_driver_data tps65021_drv_data = {
- .info = tps65021_regs,
- .core_regulator = TPS65023_DCDC_3,
+ .info = tps65021_regs,
+ .core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65023_drv_data = {
- .info = tps65023_regs,
- .core_regulator = TPS65023_DCDC_1,
+ .info = tps65023_regs,
+ .core_regulator = TPS65023_DCDC_1,
};
static const struct i2c_device_id tps_65023_id[] = {
@@ -669,22 +614,12 @@ static struct i2c_driver tps_65023_i2c_driver = {
.id_table = tps_65023_id,
};
-/**
- * tps_65023_init
- *
- * Module init function
- */
static int __init tps_65023_init(void)
{
return i2c_add_driver(&tps_65023_i2c_driver);
}
subsys_initcall(tps_65023_init);
-/**
- * tps_65023_cleanup
- *
- * Module exit function
- */
static void __exit tps_65023_cleanup(void)
{
i2c_del_driver(&tps_65023_i2c_driver);
--
1.7.5.4
--
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