[PATCH v3 4/6] regulator: mcp16502: adapt for get/set on other registers

Claudiu Beznea
2020-11-13T15:21:38Z

MCP16502 have multiple registers for each regulator (as described
in enum mcp16502_reg). Adapt the code to be able to get/set all these
registers. This is necessary for the following commits.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/regulator/mcp16502.c | 43 +++++++++++++++++++++++++++----------------
1 file changed, 27 insertions(+), 16 deletions(-)

diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c
index ab78f831f5bf..48eb64bc4018 100644
--- a/drivers/regulator/mcp16502.c
+++ b/drivers/regulator/mcp16502.c
@@ -54,13 +54,9 @@
* This function is useful for iterating over all regulators and accessing their
* registers in a generic way or accessing a regulator device by its id.
*/
-#define MCP16502_BASE(i) (((i) + 1) << 4)
+#define MCP16502_REG_BASE(i, r) ((((i) + 1) << 4) + MCP16502_REG_##r)
#define MCP16502_STAT_BASE(i) ((i) + 5)

-#define MCP16502_OFFSET_MODE_A 0
-#define MCP16502_OFFSET_MODE_LPM 1
-#define MCP16502_OFFSET_MODE_HIB 2
-
#define MCP16502_OPMODE_ACTIVE REGULATOR_MODE_NORMAL
#define MCP16502_OPMODE_LPM REGULATOR_MODE_IDLE
#define MCP16502_OPMODE_HIB REGULATOR_MODE_STANDBY
@@ -75,6 +71,23 @@
#define MCP16502_MIN_REG 0x0
#define MCP16502_MAX_REG 0x65

+/**
+ * enum mcp16502_reg - MCP16502 regulators's registers
+ * @MCP16502_REG_A: active state register
+ * @MCP16502_REG_LPM: low power mode state register
+ * @MCP16502_REG_HIB: hibernate state register
+ * @MCP16502_REG_SEQ: startup sequence register
+ * @MCP16502_REG_CFG: configuration register
+ */
+enum mcp16502_reg {
+ MCP16502_REG_A,
+ MCP16502_REG_LPM,
+ MCP16502_REG_HIB,
+ MCP16502_REG_HPM,
+ MCP16502_REG_SEQ,
+ MCP16502_REG_CFG,
+};
+
static unsigned int mcp16502_of_map_mode(unsigned int mode)
{
if (mode == REGULATOR_MODE_NORMAL || mode == REGULATOR_MODE_IDLE)
@@ -144,22 +157,20 @@ static void mcp16502_gpio_set_mode(struct mcp16502 *mcp, int mode)
}

/*
- * mcp16502_get_reg() - get the PMIC's configuration register for opmode
+ * mcp16502_get_reg() - get the PMIC's state configuration register for opmode
*
* @rdev: the regulator whose register we are searching
* @opmode: the PMIC's operating mode ACTIVE, Low-power, Hibernate
*/
-static int mcp16502_get_reg(struct regulator_dev *rdev, int opmode)
+static int mcp16502_get_state_reg(struct regulator_dev *rdev, int opmode)
{
- int reg = MCP16502_BASE(rdev_get_id(rdev));
-
switch (opmode) {
case MCP16502_OPMODE_ACTIVE:
- return reg + MCP16502_OFFSET_MODE_A;
+ return MCP16502_REG_BASE(rdev_get_id(rdev), A);
case MCP16502_OPMODE_LPM:
- return reg + MCP16502_OFFSET_MODE_LPM;
+ return MCP16502_REG_BASE(rdev_get_id(rdev), LPM);
case MCP16502_OPMODE_HIB:
- return reg + MCP16502_OFFSET_MODE_HIB;
+ return MCP16502_REG_BASE(rdev_get_id(rdev), HIB);
default:
return -EINVAL;
}
@@ -179,7 +190,7 @@ static unsigned int mcp16502_get_mode(struct regulator_dev *rdev)
unsigned int val;
int ret, reg;

- reg = mcp16502_get_reg(rdev, MCP16502_OPMODE_ACTIVE);
+ reg = mcp16502_get_state_reg(rdev, MCP16502_OPMODE_ACTIVE);
if (reg < 0)
return reg;

@@ -210,7 +221,7 @@ static int _mcp16502_set_mode(struct regulator_dev *rdev, unsigned int mode,
int val;
int reg;

- reg = mcp16502_get_reg(rdev, op_mode);
+ reg = mcp16502_get_state_reg(rdev, op_mode);
if (reg < 0)
return reg;

@@ -269,10 +280,10 @@ static int mcp16502_suspend_get_target_reg(struct regulator_dev *rdev)
{
switch (pm_suspend_target_state) {
case PM_SUSPEND_STANDBY:
- return mcp16502_get_reg(rdev, MCP16502_OPMODE_LPM);
+ return mcp16502_get_state_reg(rdev, MCP16502_OPMODE_LPM);
case PM_SUSPEND_ON:
case PM_SUSPEND_MEM:
- return mcp16502_get_reg(rdev, MCP16502_OPMODE_HIB);
+ return mcp16502_get_state_reg(rdev, MCP16502_OPMODE_HIB);
default:
dev_err(&rdev->dev, "invalid suspend target: %d\n",
pm_suspend_target_state);
--
2.7.4