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Subject[PATCH v4 1/3] regulator: max77686: Replace hard-coded opmode values with defines
Date
Add defines for regulator operating modes which should be more readable,
especially if one does not have Maxim 77686 datasheet.

The patch does not introduce any functional change.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Suggested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
---
drivers/regulator/max77686.c | 34 +++++++++++++++++++++++++++-------
1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c
index ef1af2debbd2..3d0922051488 100644
--- a/drivers/regulator/max77686.c
+++ b/drivers/regulator/max77686.c
@@ -45,6 +45,25 @@
#define MAX77686_DVS_MINUV 600000
#define MAX77686_DVS_UVSTEP 12500

+/* Values used for configuring Buck[1234] */
+#define MAX77686_BUCK_OFF_PWRREQ 0x1
+#define MAX77686_BUCK_LOWPOWER 0x2
+#define MAX77686_BUCK_NORMAL 0x3
+
+/*
+ * Values used for configuring LDOn:
+ * - LDO1, 3-5, 9, 13, 17-26: forcing low power mode
+ */
+#define MAX77686_LDO_LOWPOWER 0x1
+/*
+ * In the same time for LDOn:
+ * - LDO2, 6-8, 10-12, 14-16: on/off controlled by PWRREQ
+ */
+#define MAX77686_LDO_OFF_PWRREQ 0x1
+/* Low power mode controlled by PWRREQ */
+#define MAX77686_LDO_LOWPOWER_PWRREQ 0x2
+#define MAX77686_LDO_NORMAL 0x3
+
#define MAX77686_OPMODE_SHIFT 6
#define MAX77686_OPMODE_BUCK234_SHIFT 4
#define MAX77686_OPMODE_MASK 0x3
@@ -76,9 +95,10 @@ static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
int ret, id = rdev_get_id(rdev);

if (id == MAX77686_BUCK1)
- val = 0x1;
+ val = MAX77686_BUCK_OFF_PWRREQ;
else
- val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT;
+ val = MAX77686_BUCK_OFF_PWRREQ
+ << MAX77686_OPMODE_BUCK234_SHIFT;

ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
rdev->desc->enable_mask, val);
@@ -103,10 +123,10 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,

switch (mode) {
case REGULATOR_MODE_IDLE: /* ON in LP Mode */
- val = 0x2 << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_LOWPOWER_PWRREQ << MAX77686_OPMODE_SHIFT;
break;
case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
- val = 0x3 << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_NORMAL << MAX77686_OPMODE_SHIFT;
break;
default:
pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
@@ -133,13 +153,13 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,

switch (mode) {
case REGULATOR_MODE_STANDBY: /* switch off */
- val = 0x1 << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_OFF_PWRREQ << MAX77686_OPMODE_SHIFT;
break;
case REGULATOR_MODE_IDLE: /* ON in LP Mode */
- val = 0x2 << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_LOWPOWER_PWRREQ << MAX77686_OPMODE_SHIFT;
break;
case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
- val = 0x3 << MAX77686_OPMODE_SHIFT;
+ val = MAX77686_LDO_NORMAL << MAX77686_OPMODE_SHIFT;
break;
default:
pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
--
1.9.1


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