[PATCH v5 2/4] regulator: max77686: Store opmode non-shifted

Krzysztof Kozlowski
2014-10-27T12:12:07Z

Introduce simple helper for calculating the shift for OPMODE field in
registers. This allows storing the current value of opmode in
non-shifted form and simplifies a little set_suspend_disable and enable
functions. Additionally this will allow adding support LDOs to the
existing set_suspend_disable function.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Suggested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
---
drivers/regulator/max77686.c | 49 ++++++++++++++++++++++++++++++--------------
1 file changed, 34 insertions(+), 15 deletions(-)

diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c
index c625a8a7940d..2ebc4257425b 100644
--- a/drivers/regulator/max77686.c
+++ b/drivers/regulator/max77686.c
@@ -85,20 +85,32 @@ struct max77686_data {
unsigned int opmode[MAX77686_REGULATORS];
};

+static unsigned int max77686_get_opmode_shift(int id)
+{
+ switch (id) {
+ case MAX77686_BUCK1:
+ case MAX77686_BUCK5 ... MAX77686_BUCK9:
+ return 0;
+ case MAX77686_BUCK2 ... MAX77686_BUCK4:
+ return MAX77686_OPMODE_BUCK234_SHIFT;
+ default:
+ /* all LDOs */
+ return MAX77686_OPMODE_SHIFT;
+ }
+}
+
/* Some BUCKS supports Normal[ON/OFF] mode during suspend */
static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
{
- unsigned int val;
+ unsigned int val, shift;
struct max77686_data *max77686 = rdev_get_drvdata(rdev);
int ret, id = rdev_get_id(rdev);

- if (id == MAX77686_BUCK1)
- val = MAX77686_OFF_PWRREQ;
- else
- val = MAX77686_OFF_PWRREQ << MAX77686_OPMODE_BUCK234_SHIFT;
+ shift = max77686_get_opmode_shift(id);
+ val = MAX77686_OFF_PWRREQ;

ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
- rdev->desc->enable_mask, val);
+ rdev->desc->enable_mask, val << shift);
if (ret)
return ret;

@@ -120,10 +132,10 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,

switch (mode) {
case REGULATOR_MODE_IDLE: /* ON in LP Mode */
- val = MAX77686_LDO_LOWPOWER_PWRREQ << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_LOWPOWER_PWRREQ;
break;
case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
- val = MAX77686_NORMAL << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_NORMAL;
break;
default:
pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
@@ -132,7 +144,8 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,
}

ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
- rdev->desc->enable_mask, val);
+ rdev->desc->enable_mask,
+ val << MAX77686_OPMODE_SHIFT);
if (ret)
return ret;

@@ -150,13 +163,13 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,

switch (mode) {
case REGULATOR_MODE_STANDBY: /* switch off */
- val = MAX77686_OFF_PWRREQ << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_OFF_PWRREQ;
break;
case REGULATOR_MODE_IDLE: /* ON in LP Mode */
- val = MAX77686_LDO_LOWPOWER_PWRREQ << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_LOWPOWER_PWRREQ;
break;
case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
- val = MAX77686_NORMAL << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_NORMAL;
break;
default:
pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
@@ -165,7 +178,8 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
}

ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
- rdev->desc->enable_mask, val);
+ rdev->desc->enable_mask,
+ val << MAX77686_OPMODE_SHIFT);
if (ret)
return ret;

@@ -176,10 +190,14 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
static int max77686_enable(struct regulator_dev *rdev)
{
struct max77686_data *max77686 = rdev_get_drvdata(rdev);
+ unsigned int shift;
+ int id = rdev_get_id(rdev);
+
+ shift = max77686_get_opmode_shift(id);

return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
rdev->desc->enable_mask,
- max77686->opmode[rdev_get_id(rdev)]);
+ max77686->opmode[id] << shift);
}

static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
@@ -495,7 +513,8 @@ static int max77686_pmic_probe(struct platform_device *pdev)
config.init_data = pdata->regulators[i].initdata;
config.of_node = pdata->regulators[i].of_node;

- max77686->opmode[i] = regulators[i].enable_mask;
+ max77686->opmode[i] = regulators[i].enable_mask >>
+ max77686_get_opmode_shift(i);
rdev = devm_regulator_register(&pdev->dev,
&regulators[i], &config);
if (IS_ERR(rdev)) {
--
1.9.1