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regulator: max8997: limit the number of dvs registers programmed in non-dvs mode

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In case the gpio based volatage selection mode is not used for either of
buck 1/2/5, then only the BUCKxDVS1 register need to be programmed. So
determine whether dvs mode is used and limit the loop count appropriately.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Thomas Abraham 2012-11-23 13:33:14 +05:30 committed by Mark Brown
parent 11ec7bf001
commit 068a8c8239
1 changed files with 6 additions and 3 deletions
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9
drivers/regulator/max8997.c
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@ -941,7 +941,7 @@ static __devinit int max8997_pmic_probe(struct platform_device *pdev)
struct regulator_dev **rdev; struct regulator_dev **rdev;
struct max8997_data *max8997; struct max8997_data *max8997;
struct i2c_client *i2c; struct i2c_client *i2c;
int i, ret, size; int i, ret, size, nr_dvs;
u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0; u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0;
if (!pdata) { if (!pdata) {
@ -973,7 +973,10 @@ static __devinit int max8997_pmic_probe(struct platform_device *pdev)
memcpy(max8997->buck125_gpios, pdata->buck125_gpios, sizeof(int) * 3); memcpy(max8997->buck125_gpios, pdata->buck125_gpios, sizeof(int) * 3);
max8997->ignore_gpiodvs_side_effect = pdata->ignore_gpiodvs_side_effect; max8997->ignore_gpiodvs_side_effect = pdata->ignore_gpiodvs_side_effect;
for (i = 0; i < 8; i++) { nr_dvs = (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs ||
pdata->buck5_gpiodvs) ? 8 : 1;
for (i = 0; i < nr_dvs; i++) {
max8997->buck1_vol[i] = ret = max8997->buck1_vol[i] = ret =
max8997_get_voltage_proper_val( max8997_get_voltage_proper_val(
&buck1245_voltage_map_desc, &buck1245_voltage_map_desc,
@ -1020,7 +1023,7 @@ static __devinit int max8997_pmic_probe(struct platform_device *pdev)
} }
/* Initialize all the DVS related BUCK registers */ /* Initialize all the DVS related BUCK registers */
for (i = 0; i < 8; i++) { for (i = 0; i < nr_dvs; i++) {
max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i,
max8997->buck1_vol[i], max8997->buck1_vol[i],
0x3f); 0x3f);