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Message-Id: <1360148051-7560-40-git-send-email-lee.jones@linaro.org>
Date: Wed, 6 Feb 2013 10:54:01 +0000
From: Lee Jones <lee.jones@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: broonie@...nsource.wolfsonmicro.com, linus.walleij@...aro.org,
"xiaomei.zhang" <xiaomei.zhang@...ricsson.com>,
Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 39/49] regulator: ab8500: Add new operations for Vaux3
From: "xiaomei.zhang" <xiaomei.zhang@...ricsson.com>
In former functions, only can set Vaux3 to 2.91V, because the
highest bit of Vaux3 register is put into another register. So
add new expanded functions for Vaux3's operation.
Signed-off-by: zhang xiaomei <xiaomei.zhang@...ricsson.com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@...ricsson.com>
---
drivers/regulator/ab8500.c | 120 +++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 119 insertions(+), 1 deletion(-)
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 8c9f2ba..7f71acc 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -65,6 +65,13 @@ struct ab8500_regulator_info {
u8 voltage_mask;
u8 voltage_shift;
unsigned int delay;
+ struct {
+ u8 voltage_limit;
+ u8 voltage_bank;
+ u8 voltage_reg;
+ u8 voltage_mask;
+ u8 voltage_shift;
+ } expand_register;
};
/* voltage tables for the vauxn/vintcore supplies */
@@ -383,6 +390,57 @@ static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
return val >> info->voltage_shift;
}
+static int ab8540_aux3_regulator_get_voltage_sel(struct regulator_dev *rdev)
+{
+ int ret, val;
+ struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+ u8 regval, regval_expand;
+
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+ return -EINVAL;
+ }
+
+ ret = abx500_get_register_interruptible(info->dev,
+ info->voltage_bank, info->voltage_reg, ®val);
+
+ if (ret < 0) {
+ dev_err(rdev_get_dev(rdev),
+ "couldn't read voltage reg for regulator\n");
+ return ret;
+ }
+
+ ret = abx500_get_register_interruptible(info->dev,
+ info->expand_register.voltage_bank,
+ info->expand_register.voltage_reg, ®val_expand);
+
+ if (ret < 0) {
+ dev_err(rdev_get_dev(rdev),
+ "couldn't read voltage reg for regulator\n");
+ return ret;
+ }
+
+ dev_vdbg(rdev_get_dev(rdev),
+ "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
+ " 0x%x\n",
+ info->desc.name, info->voltage_bank, info->voltage_reg,
+ info->voltage_mask, regval);
+ dev_vdbg(rdev_get_dev(rdev),
+ "%s-get_voltage expand (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
+ " 0x%x\n",
+ info->desc.name, info->expand_register.voltage_bank,
+ info->expand_register.voltage_reg,
+ info->expand_register.voltage_mask, regval_expand);
+
+ if (regval_expand&(info->expand_register.voltage_mask))
+ /* Vaux3 has a different layout */
+ val = info->expand_register.voltage_limit;
+ else
+ val = (regval & info->voltage_mask) >> info->voltage_shift;
+
+ return val;
+}
+
static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
unsigned selector)
{
@@ -413,6 +471,46 @@ static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
return ret;
}
+static int ab8540_aux3_regulator_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ int ret;
+ struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+ u8 regval;
+
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+ return -EINVAL;
+ }
+
+ if (selector >= info->expand_register.voltage_limit) {
+ /* Vaux3 bit4 has different layout */
+ regval = (u8)selector << info->expand_register.voltage_shift;
+ ret = abx500_mask_and_set_register_interruptible(info->dev,
+ info->expand_register.voltage_bank,
+ info->expand_register.voltage_reg,
+ info->expand_register.voltage_mask,
+ regval);
+ } else {
+ /* set the registers for the request */
+ regval = (u8)selector << info->voltage_shift;
+ ret = abx500_mask_and_set_register_interruptible(info->dev,
+ info->voltage_bank, info->voltage_reg,
+ info->voltage_mask, regval);
+ }
+ if (ret < 0)
+ dev_err(rdev_get_dev(rdev),
+ "couldn't set voltage reg for regulator\n");
+
+ dev_vdbg(rdev_get_dev(rdev),
+ "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
+ " 0x%x\n",
+ info->desc.name, info->voltage_bank, info->voltage_reg,
+ info->voltage_mask, regval);
+
+ return ret;
+}
+
static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_sel,
unsigned int new_sel)
@@ -435,6 +533,19 @@ static struct regulator_ops ab8500_regulator_volt_mode_ops = {
.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
};
+static struct regulator_ops ab8540_aux3_regulator_volt_mode_ops = {
+ .enable = ab8500_regulator_enable,
+ .disable = ab8500_regulator_disable,
+ .get_optimum_mode = ab8500_regulator_get_optimum_mode,
+ .set_mode = ab8500_regulator_set_mode,
+ .get_mode = ab8500_regulator_get_mode,
+ .is_enabled = ab8500_regulator_is_enabled,
+ .get_voltage_sel = ab8540_aux3_regulator_get_voltage_sel,
+ .set_voltage_sel = ab8540_aux3_regulator_set_voltage_sel,
+ .list_voltage = regulator_list_voltage_table,
+ .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
+};
+
static struct regulator_ops ab8500_regulator_volt_ops = {
.enable = ab8500_regulator_enable,
.disable = ab8500_regulator_disable,
@@ -1260,7 +1371,7 @@ static struct ab8500_regulator_info
[AB8540_LDO_AUX3] = {
.desc = {
.name = "LDO-AUX3",
- .ops = &ab8500_regulator_volt_mode_ops,
+ .ops = &ab8540_aux3_regulator_volt_mode_ops,
.type = REGULATOR_VOLTAGE,
.id = AB8540_LDO_AUX3,
.owner = THIS_MODULE,
@@ -1277,6 +1388,13 @@ static struct ab8500_regulator_info
.voltage_bank = 0x04,
.voltage_reg = 0x21,
.voltage_mask = 0x07,
+ .expand_register = {
+ .voltage_limit = 8,
+ .voltage_bank = 0x04,
+ .voltage_reg = 0x01,
+ .voltage_mask = 0x10,
+ .voltage_shift = 1,
+ }
},
[AB8540_LDO_AUX4] = {
.desc = {
--
1.7.9.5
--
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