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Message-ID: <1331539070.13086.2.camel@phoenix>
Date: Mon, 12 Mar 2012 15:57:50 +0800
From: Axel Lin <axel.lin@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Anuj Aggarwal <anuj.aggarwal@...com>, Liam Girdwood <lrg@...com>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH RFC/RFT 1/2] regulator: Refactor tps6507x to use one
tps6507x_pmic_ops for all LDOs and DCDCs
All the callback functions implementation for DCDCx and LDOx are very similar,
I think it is ok to use one tps6507x_pmic_ops for all LDOs and DCDCs.
This refactor removes a couple of duplicated code.
Signed-off-by: Axel Lin <axel.lin@...il.com>
---
drivers/regulator/tps6507x-regulator.c | 268 ++++++++------------------------
1 files changed, 67 insertions(+), 201 deletions(-)
diff --git a/drivers/regulator/tps6507x-regulator.c b/drivers/regulator/tps6507x-regulator.c
index 0b63ef7..e140a15 100644
--- a/drivers/regulator/tps6507x-regulator.c
+++ b/drivers/regulator/tps6507x-regulator.c
@@ -238,16 +238,16 @@ static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
return err;
}
-static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
+static int tps6507x_pmic_is_enabled(struct regulator_dev *dev)
{
struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int data, dcdc = rdev_get_id(dev);
+ int data, rid = rdev_get_id(dev);
u8 shift;
- if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
return -EINVAL;
- shift = TPS6507X_MAX_REG_ID - dcdc;
+ shift = TPS6507X_MAX_REG_ID - rid;
data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
if (data < 0)
@@ -256,99 +256,65 @@ static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
return (data & 1<<shift) ? 1 : 0;
}
-static int tps6507x_pmic_ldo_is_enabled(struct regulator_dev *dev)
+static int tps6507x_pmic_enable(struct regulator_dev *dev)
{
struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int data, ldo = rdev_get_id(dev);
+ int rid = rdev_get_id(dev);
u8 shift;
- if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
return -EINVAL;
- shift = TPS6507X_MAX_REG_ID - ldo;
- data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
-
- if (data < 0)
- return data;
- else
- return (data & 1<<shift) ? 1 : 0;
-}
-
-static int tps6507x_pmic_dcdc_enable(struct regulator_dev *dev)
-{
- struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int dcdc = rdev_get_id(dev);
- u8 shift;
-
- if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
- return -EINVAL;
-
- shift = TPS6507X_MAX_REG_ID - dcdc;
- return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
-}
-
-static int tps6507x_pmic_dcdc_disable(struct regulator_dev *dev)
-{
- struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int dcdc = rdev_get_id(dev);
- u8 shift;
-
- if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
- return -EINVAL;
-
- shift = TPS6507X_MAX_REG_ID - dcdc;
- return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
- 1 << shift);
-}
-
-static int tps6507x_pmic_ldo_enable(struct regulator_dev *dev)
-{
- struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int ldo = rdev_get_id(dev);
- u8 shift;
-
- if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
- return -EINVAL;
-
- shift = TPS6507X_MAX_REG_ID - ldo;
+ shift = TPS6507X_MAX_REG_ID - rid;
return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}
-static int tps6507x_pmic_ldo_disable(struct regulator_dev *dev)
+static int tps6507x_pmic_disable(struct regulator_dev *dev)
{
struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int ldo = rdev_get_id(dev);
+ int rid = rdev_get_id(dev);
u8 shift;
- if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
return -EINVAL;
- shift = TPS6507X_MAX_REG_ID - ldo;
+ shift = TPS6507X_MAX_REG_ID - rid;
return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
1 << shift);
}
-static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
+static int tps6507x_pmic_get_voltage(struct regulator_dev *dev)
{
struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int data, dcdc = rdev_get_id(dev);
- u8 reg;
+ int data, rid = rdev_get_id(dev);
+ u8 reg, mask;
- switch (dcdc) {
+ switch (rid) {
case TPS6507X_DCDC_1:
reg = TPS6507X_REG_DEFDCDC1;
+ mask = TPS6507X_DEFDCDCX_DCDC_MASK;
break;
case TPS6507X_DCDC_2:
- if (tps->info[dcdc]->defdcdc_default)
+ if (tps->info[rid]->defdcdc_default)
reg = TPS6507X_REG_DEFDCDC2_HIGH;
else
reg = TPS6507X_REG_DEFDCDC2_LOW;
+ mask = TPS6507X_DEFDCDCX_DCDC_MASK;
break;
case TPS6507X_DCDC_3:
- if (tps->info[dcdc]->defdcdc_default)
+ if (tps->info[rid]->defdcdc_default)
reg = TPS6507X_REG_DEFDCDC3_HIGH;
else
reg = TPS6507X_REG_DEFDCDC3_LOW;
+ mask = TPS6507X_DEFDCDCX_DCDC_MASK;
+ break;
+ case TPS6507X_LDO_1:
+ reg = TPS6507X_REG_LDO_CTRL1;
+ mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
+ break;
+ case TPS6507X_LDO_2:
+ reg = TPS6507X_REG_DEFLDO2;
+ mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
break;
default:
return -EINVAL;
@@ -358,47 +324,56 @@ static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
if (data < 0)
return data;
- data &= TPS6507X_DEFDCDCX_DCDC_MASK;
- return tps->info[dcdc]->table[data] * 1000;
+ data &= mask;
+ return tps->info[rid]->table[data] * 1000;
}
-static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
+static int tps6507x_pmic_set_voltage(struct regulator_dev *dev,
int min_uV, int max_uV,
unsigned *selector)
{
struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int data, vsel, dcdc = rdev_get_id(dev);
- u8 reg;
+ int data, vsel, rid = rdev_get_id(dev);
+ u8 reg, mask;
- switch (dcdc) {
+ switch (rid) {
case TPS6507X_DCDC_1:
reg = TPS6507X_REG_DEFDCDC1;
+ mask = TPS6507X_DEFDCDCX_DCDC_MASK;
break;
case TPS6507X_DCDC_2:
- if (tps->info[dcdc]->defdcdc_default)
+ if (tps->info[rid]->defdcdc_default)
reg = TPS6507X_REG_DEFDCDC2_HIGH;
else
reg = TPS6507X_REG_DEFDCDC2_LOW;
+ mask = TPS6507X_DEFDCDCX_DCDC_MASK;
break;
case TPS6507X_DCDC_3:
- if (tps->info[dcdc]->defdcdc_default)
+ if (tps->info[rid]->defdcdc_default)
reg = TPS6507X_REG_DEFDCDC3_HIGH;
else
reg = TPS6507X_REG_DEFDCDC3_LOW;
+ mask = TPS6507X_DEFDCDCX_DCDC_MASK;
+ break;
+ case TPS6507X_LDO_1:
+ reg = TPS6507X_REG_LDO_CTRL1;
+ mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
+ break;
+ case TPS6507X_LDO_2:
+ reg = TPS6507X_REG_DEFLDO2;
+ mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
break;
default:
return -EINVAL;
}
- if (min_uV < tps->info[dcdc]->min_uV
- || min_uV > tps->info[dcdc]->max_uV)
+ if (min_uV < tps->info[rid]->min_uV || min_uV > tps->info[rid]->max_uV)
return -EINVAL;
- if (max_uV < tps->info[dcdc]->min_uV
- || max_uV > tps->info[dcdc]->max_uV)
+ if (max_uV < tps->info[rid]->min_uV || max_uV > tps->info[rid]->max_uV)
return -EINVAL;
- for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
- int mV = tps->info[dcdc]->table[vsel];
+ for (vsel = 0; vsel < tps->info[rid]->table_len; vsel++) {
+ int mV = tps->info[rid]->table[vsel];
int uV = mV * 1000;
/* Break at the first in-range value */
@@ -407,78 +382,7 @@ static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
}
/* write to the register in case we found a match */
- if (vsel == tps->info[dcdc]->table_len)
- return -EINVAL;
-
- *selector = vsel;
-
- data = tps6507x_pmic_reg_read(tps, reg);
- if (data < 0)
- return data;
-
- data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
- data |= vsel;
-
- return tps6507x_pmic_reg_write(tps, reg, data);
-}
-
-static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
-{
- struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int data, ldo = rdev_get_id(dev);
- u8 reg, mask;
-
- if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
- return -EINVAL;
- else {
- reg = (ldo == TPS6507X_LDO_1 ?
- TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
- mask = (ldo == TPS6507X_LDO_1 ?
- TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
- TPS6507X_REG_DEFLDO2_LDO2_MASK);
- }
-
- data = tps6507x_pmic_reg_read(tps, reg);
- if (data < 0)
- return data;
-
- data &= mask;
- return tps->info[ldo]->table[data] * 1000;
-}
-
-static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV,
- unsigned *selector)
-{
- struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int data, vsel, ldo = rdev_get_id(dev);
- u8 reg, mask;
-
- if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
- return -EINVAL;
- else {
- reg = (ldo == TPS6507X_LDO_1 ?
- TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
- mask = (ldo == TPS6507X_LDO_1 ?
- TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
- TPS6507X_REG_DEFLDO2_LDO2_MASK);
- }
-
- 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;
-
- 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)
+ if (vsel == tps->info[rid]->table_len)
return -EINVAL;
*selector = vsel;
@@ -493,58 +397,31 @@ static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
return tps6507x_pmic_reg_write(tps, reg, data);
}
-static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
+static int tps6507x_pmic_list_voltage(struct regulator_dev *dev,
unsigned selector)
{
struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int dcdc = rdev_get_id(dev);
+ int rid = rdev_get_id(dev);
- if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
return -EINVAL;
- if (selector >= tps->info[dcdc]->table_len)
+ if (selector >= tps->info[rid]->table_len)
return -EINVAL;
else
- return tps->info[dcdc]->table[selector] * 1000;
+ return tps->info[rid]->table[selector] * 1000;
}
-static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
- unsigned selector)
-{
- struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
- int ldo = rdev_get_id(dev);
-
- if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
- return -EINVAL;
-
- if (selector >= tps->info[ldo]->table_len)
- return -EINVAL;
- else
- return tps->info[ldo]->table[selector] * 1000;
-}
-
-/* Operations permitted on VDCDCx */
-static struct regulator_ops tps6507x_pmic_dcdc_ops = {
- .is_enabled = tps6507x_pmic_dcdc_is_enabled,
- .enable = tps6507x_pmic_dcdc_enable,
- .disable = tps6507x_pmic_dcdc_disable,
- .get_voltage = tps6507x_pmic_dcdc_get_voltage,
- .set_voltage = tps6507x_pmic_dcdc_set_voltage,
- .list_voltage = tps6507x_pmic_dcdc_list_voltage,
+static struct regulator_ops tps6507x_pmic_ops = {
+ .is_enabled = tps6507x_pmic_is_enabled,
+ .enable = tps6507x_pmic_enable,
+ .disable = tps6507x_pmic_disable,
+ .get_voltage = tps6507x_pmic_get_voltage,
+ .set_voltage = tps6507x_pmic_set_voltage,
+ .list_voltage = tps6507x_pmic_list_voltage,
};
-/* Operations permitted on LDOx */
-static struct regulator_ops tps6507x_pmic_ldo_ops = {
- .is_enabled = tps6507x_pmic_ldo_is_enabled,
- .enable = tps6507x_pmic_ldo_enable,
- .disable = tps6507x_pmic_ldo_disable,
- .get_voltage = tps6507x_pmic_ldo_get_voltage,
- .set_voltage = tps6507x_pmic_ldo_set_voltage,
- .list_voltage = tps6507x_pmic_ldo_list_voltage,
-};
-
-static __devinit
-int tps6507x_pmic_probe(struct platform_device *pdev)
+static __devinit int tps6507x_pmic_probe(struct platform_device *pdev)
{
struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
struct tps_info *info = &tps6507x_pmic_regs[0];
@@ -593,8 +470,7 @@ int tps6507x_pmic_probe(struct platform_device *pdev)
tps->desc[i].name = info->name;
tps->desc[i].id = i;
tps->desc[i].n_voltages = info->table_len;
- tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
- &tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
+ tps->desc[i].ops = &tps6507x_pmic_ops;
tps->desc[i].type = REGULATOR_VOLTAGE;
tps->desc[i].owner = THIS_MODULE;
@@ -648,22 +524,12 @@ static struct platform_driver tps6507x_pmic_driver = {
.remove = __devexit_p(tps6507x_pmic_remove),
};
-/**
- * tps6507x_pmic_init
- *
- * Module init function
- */
static int __init tps6507x_pmic_init(void)
{
return platform_driver_register(&tps6507x_pmic_driver);
}
subsys_initcall(tps6507x_pmic_init);
-/**
- * tps6507x_pmic_cleanup
- *
- * Module exit function
- */
static void __exit tps6507x_pmic_cleanup(void)
{
platform_driver_unregister(&tps6507x_pmic_driver);
--
1.7.5.4
--
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