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path: root/drivers/regulator/s5m8767.c
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Diffstat (limited to 'drivers/regulator/s5m8767.c')
-rw-r--r--drivers/regulator/s5m8767.c327
1 files changed, 161 insertions, 166 deletions
diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 4ca2db05900..290d6fc0102 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -12,7 +12,6 @@
*/
#include <linux/bug.h>
-#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
@@ -28,6 +27,7 @@ struct s5m8767_info {
struct s5m87xx_dev *iodev;
int num_regulators;
struct regulator_dev **rdev;
+ struct s5m_opmode_data *opmode;
int ramp_delay;
bool buck2_ramp;
@@ -141,9 +141,56 @@ static int s5m8767_list_voltage(struct regulator_dev *rdev,
return val;
}
-static int s5m8767_get_register(struct regulator_dev *rdev, int *reg)
+static unsigned int s5m8767_opmode_reg[][4] = {
+ /* {OFF, ON, LOWPOWER, SUSPEND} */
+ /* LDO1 ... LDO28 */
+ {0x0, 0x3, 0x2, 0x1}, /* LDO1 */
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x0, 0x0, 0x0},
+ {0x0, 0x3, 0x2, 0x1}, /* LDO5 */
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1}, /* LDO10 */
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1}, /* LDO15 */
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x0, 0x0, 0x0},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1}, /* LDO20 */
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x0, 0x0, 0x0},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1}, /* LDO25 */
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1},
+ {0x0, 0x3, 0x2, 0x1}, /* LDO28 */
+
+ /* BUCK1 ... BUCK9 */
+ {0x0, 0x3, 0x1, 0x1}, /* BUCK1 */
+ {0x0, 0x3, 0x1, 0x1},
+ {0x0, 0x3, 0x1, 0x1},
+ {0x0, 0x3, 0x1, 0x1},
+ {0x0, 0x3, 0x2, 0x1}, /* BUCK5 */
+ {0x0, 0x3, 0x1, 0x1},
+ {0x0, 0x3, 0x1, 0x1},
+ {0x0, 0x3, 0x1, 0x1},
+ {0x0, 0x3, 0x1, 0x1}, /* BUCK9 */
+};
+
+static int s5m8767_get_register(struct regulator_dev *rdev, int *reg,
+ int *enable_ctrl)
{
int reg_id = rdev_get_id(rdev);
+ unsigned int mode;
+ struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
switch (reg_id) {
case S5M8767_LDO1 ... S5M8767_LDO2:
@@ -168,6 +215,8 @@ static int s5m8767_get_register(struct regulator_dev *rdev, int *reg)
return -EINVAL;
}
+ mode = s5m8767->opmode[reg_id].mode;
+ *enable_ctrl = s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
return 0;
}
@@ -175,10 +224,10 @@ static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
{
struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
int ret, reg;
- int mask = 0xc0, pattern = 0xc0;
+ int mask = 0xc0, enable_ctrl;
u8 val;
- ret = s5m8767_get_register(rdev, &reg);
+ ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
if (ret == -EINVAL)
return 1;
else if (ret)
@@ -188,33 +237,33 @@ static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
if (ret)
return ret;
- return (val & mask) == pattern;
+ return (val & mask) == enable_ctrl;
}
static int s5m8767_reg_enable(struct regulator_dev *rdev)
{
struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
int ret, reg;
- int mask = 0xc0, pattern = 0xc0;
+ int mask = 0xc0, enable_ctrl;
- ret = s5m8767_get_register(rdev, &reg);
+ ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
if (ret)
return ret;
- return s5m_reg_update(s5m8767->iodev, reg, pattern, mask);
+ return s5m_reg_update(s5m8767->iodev, reg, enable_ctrl, mask);
}
static int s5m8767_reg_disable(struct regulator_dev *rdev)
{
struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
int ret, reg;
- int mask = 0xc0, pattern = 0xc0;
+ int mask = 0xc0, enable_ctrl;
- ret = s5m8767_get_register(rdev, &reg);
+ ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
if (ret)
return ret;
- return s5m_reg_update(s5m8767->iodev, reg, ~pattern, mask);
+ return s5m_reg_update(s5m8767->iodev, reg, ~mask, mask);
}
static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
@@ -297,7 +346,10 @@ static int s5m8767_convert_voltage_to_sel(
if (max_vol < desc->min || min_vol > desc->max)
return -EINVAL;
- selector = (min_vol - desc->min) / desc->step;
+ if (min_vol < desc->min)
+ min_vol = desc->min;
+
+ selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
if (desc->min + desc->step * selector > max_vol)
return -EINVAL;
@@ -305,14 +357,33 @@ static int s5m8767_convert_voltage_to_sel(
return selector;
}
+static inline void s5m8767_set_high(struct s5m8767_info *s5m8767)
+{
+ int temp_index = s5m8767->buck_gpioindex;
+
+ gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
+ gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
+ gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
+}
+
+static inline void s5m8767_set_low(struct s5m8767_info *s5m8767)
+{
+ int temp_index = s5m8767->buck_gpioindex;
+
+ gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
+ gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
+ gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
+}
+
static int s5m8767_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned *selector)
{
struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
const struct s5m_voltage_desc *desc;
int reg_id = rdev_get_id(rdev);
- int sel, reg, mask, ret;
+ int sel, reg, mask, ret = 0, old_index, index = 0;
u8 val;
+ u8 *buck234_vol = NULL;
switch (reg_id) {
case S5M8767_LDO1 ... S5M8767_LDO28:
@@ -320,6 +391,12 @@ static int s5m8767_set_voltage(struct regulator_dev *rdev,
break;
case S5M8767_BUCK1 ... S5M8767_BUCK6:
mask = 0xff;
+ if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs)
+ buck234_vol = &s5m8767->buck2_vol[0];
+ else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs)
+ buck234_vol = &s5m8767->buck3_vol[0];
+ else if (reg_id == S5M8767_BUCK4 && s5m8767->buck4_gpiodvs)
+ buck234_vol = &s5m8767->buck4_vol[0];
break;
case S5M8767_BUCK7 ... S5M8767_BUCK8:
return -EINVAL;
@@ -336,102 +413,32 @@ static int s5m8767_set_voltage(struct regulator_dev *rdev,
if (sel < 0)
return sel;
- ret = s5m8767_get_voltage_register(rdev, &reg);
- if (ret)
- return ret;
-
- s5m_reg_read(s5m8767->iodev, reg, &val);
- val &= ~mask;
- val |= sel;
-
- ret = s5m_reg_write(s5m8767->iodev, reg, val);
- *selector = sel;
-
- return ret;
-}
-
-static inline void s5m8767_set_high(struct s5m8767_info *s5m8767)
-{
- int temp_index = s5m8767->buck_gpioindex;
-
- gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
- gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
- gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
-}
-
-static inline void s5m8767_set_low(struct s5m8767_info *s5m8767)
-{
- int temp_index = s5m8767->buck_gpioindex;
-
- gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
- gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
- gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
-}
-
-static int s5m8767_set_voltage_buck(struct regulator_dev *rdev,
- int min_uV, int max_uV, unsigned *selector)
-{
- struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
- int reg_id = rdev_get_id(rdev);
- const struct s5m_voltage_desc *desc;
- int new_val, old_val, i = 0;
-
- if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6)
- return -EINVAL;
-
- switch (reg_id) {
- case S5M8767_BUCK1:
- return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
- case S5M8767_BUCK2 ... S5M8767_BUCK4:
- break;
- case S5M8767_BUCK5 ... S5M8767_BUCK6:
- return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
- case S5M8767_BUCK9:
- return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
- }
+ /* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */
+ if (buck234_vol) {
+ while (*buck234_vol != sel) {
+ buck234_vol++;
+ index++;
+ }
+ old_index = s5m8767->buck_gpioindex;
+ s5m8767->buck_gpioindex = index;
+
+ if (index > old_index)
+ s5m8767_set_high(s5m8767);
+ else
+ s5m8767_set_low(s5m8767);
+ } else {
+ ret = s5m8767_get_voltage_register(rdev, &reg);
+ if (ret)
+ return ret;
- desc = reg_voltage_map[reg_id];
- new_val = s5m8767_convert_voltage_to_sel(desc, min_uV, max_uV);
- if (new_val < 0)
- return new_val;
+ s5m_reg_read(s5m8767->iodev, reg, &val);
+ val = (val & ~mask) | sel;
- switch (reg_id) {
- case S5M8767_BUCK2:
- if (s5m8767->buck2_gpiodvs) {
- while (s5m8767->buck2_vol[i] != new_val)
- i++;
- } else
- return s5m8767_set_voltage(rdev, min_uV,
- max_uV, selector);
- break;
- case S5M8767_BUCK3:
- if (s5m8767->buck3_gpiodvs) {
- while (s5m8767->buck3_vol[i] != new_val)
- i++;
- } else
- return s5m8767_set_voltage(rdev, min_uV,
- max_uV, selector);
- break;
- case S5M8767_BUCK4:
- if (s5m8767->buck3_gpiodvs) {
- while (s5m8767->buck4_vol[i] != new_val)
- i++;
- } else
- return s5m8767_set_voltage(rdev, min_uV,
- max_uV, selector);
- break;
+ ret = s5m_reg_write(s5m8767->iodev, reg, val);
}
- old_val = s5m8767->buck_gpioindex;
- s5m8767->buck_gpioindex = i;
-
- if (i > old_val)
- s5m8767_set_high(s5m8767);
- else
- s5m8767_set_low(s5m8767);
-
- *selector = new_val;
- return 0;
+ *selector = sel;
+ return ret;
}
static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
@@ -450,7 +457,7 @@ static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
return 0;
}
-static struct regulator_ops s5m8767_ldo_ops = {
+static struct regulator_ops s5m8767_ops = {
.list_voltage = s5m8767_list_voltage,
.is_enabled = s5m8767_reg_is_enabled,
.enable = s5m8767_reg_enable,
@@ -460,75 +467,59 @@ static struct regulator_ops s5m8767_ldo_ops = {
.set_voltage_time_sel = s5m8767_set_voltage_time_sel,
};
-static struct regulator_ops s5m8767_buck_ops = {
- .list_voltage = s5m8767_list_voltage,
- .is_enabled = s5m8767_reg_is_enabled,
- .enable = s5m8767_reg_enable,
- .disable = s5m8767_reg_disable,
- .get_voltage_sel = s5m8767_get_voltage_sel,
- .set_voltage = s5m8767_set_voltage_buck,
- .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
-};
-
-#define regulator_desc_ldo(num) { \
- .name = "LDO"#num, \
- .id = S5M8767_LDO##num, \
- .ops = &s5m8767_ldo_ops, \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
-}
-#define regulator_desc_buck(num) { \
- .name = "BUCK"#num, \
- .id = S5M8767_BUCK##num, \
- .ops = &s5m8767_buck_ops, \
+#define s5m8767_regulator_desc(_name) { \
+ .name = #_name, \
+ .id = S5M8767_##_name, \
+ .ops = &s5m8767_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}
static struct regulator_desc regulators[] = {
- regulator_desc_ldo(1),
- regulator_desc_ldo(2),
- regulator_desc_ldo(3),
- regulator_desc_ldo(4),
- regulator_desc_ldo(5),
- regulator_desc_ldo(6),
- regulator_desc_ldo(7),
- regulator_desc_ldo(8),
- regulator_desc_ldo(9),
- regulator_desc_ldo(10),
- regulator_desc_ldo(11),
- regulator_desc_ldo(12),
- regulator_desc_ldo(13),
- regulator_desc_ldo(14),
- regulator_desc_ldo(15),
- regulator_desc_ldo(16),
- regulator_desc_ldo(17),
- regulator_desc_ldo(18),
- regulator_desc_ldo(19),
- regulator_desc_ldo(20),
- regulator_desc_ldo(21),
- regulator_desc_ldo(22),
- regulator_desc_ldo(23),
- regulator_desc_ldo(24),
- regulator_desc_ldo(25),
- regulator_desc_ldo(26),
- regulator_desc_ldo(27),
- regulator_desc_ldo(28),
- regulator_desc_buck(1),
- regulator_desc_buck(2),
- regulator_desc_buck(3),
- regulator_desc_buck(4),
- regulator_desc_buck(5),
- regulator_desc_buck(6),
- regulator_desc_buck(7),
- regulator_desc_buck(8),
- regulator_desc_buck(9),
+ s5m8767_regulator_desc(LDO1),
+ s5m8767_regulator_desc(LDO2),
+ s5m8767_regulator_desc(LDO3),
+ s5m8767_regulator_desc(LDO4),
+ s5m8767_regulator_desc(LDO5),
+ s5m8767_regulator_desc(LDO6),
+ s5m8767_regulator_desc(LDO7),
+ s5m8767_regulator_desc(LDO8),
+ s5m8767_regulator_desc(LDO9),
+ s5m8767_regulator_desc(LDO10),
+ s5m8767_regulator_desc(LDO11),
+ s5m8767_regulator_desc(LDO12),
+ s5m8767_regulator_desc(LDO13),
+ s5m8767_regulator_desc(LDO14),
+ s5m8767_regulator_desc(LDO15),
+ s5m8767_regulator_desc(LDO16),
+ s5m8767_regulator_desc(LDO17),
+ s5m8767_regulator_desc(LDO18),
+ s5m8767_regulator_desc(LDO19),
+ s5m8767_regulator_desc(LDO20),
+ s5m8767_regulator_desc(LDO21),
+ s5m8767_regulator_desc(LDO22),
+ s5m8767_regulator_desc(LDO23),
+ s5m8767_regulator_desc(LDO24),
+ s5m8767_regulator_desc(LDO25),
+ s5m8767_regulator_desc(LDO26),
+ s5m8767_regulator_desc(LDO27),
+ s5m8767_regulator_desc(LDO28),
+ s5m8767_regulator_desc(BUCK1),
+ s5m8767_regulator_desc(BUCK2),
+ s5m8767_regulator_desc(BUCK3),
+ s5m8767_regulator_desc(BUCK4),
+ s5m8767_regulator_desc(BUCK5),
+ s5m8767_regulator_desc(BUCK6),
+ s5m8767_regulator_desc(BUCK7),
+ s5m8767_regulator_desc(BUCK8),
+ s5m8767_regulator_desc(BUCK9),
};
static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
{
struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev);
+ struct regulator_config config = { };
struct regulator_dev **rdev;
struct s5m8767_info *s5m8767;
int i, ret, size;
@@ -586,6 +577,7 @@ static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
+ s5m8767->opmode = pdata->opmode;
for (i = 0; i < 8; i++) {
if (s5m8767->buck2_gpiodvs) {
@@ -723,8 +715,11 @@ static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
regulators[id].n_voltages =
(desc->max - desc->min) / desc->step + 1;
- rdev[i] = regulator_register(&regulators[id], s5m8767->dev,
- pdata->regulators[i].initdata, s5m8767, NULL);
+ config.dev = s5m8767->dev;
+ config.init_data = pdata->regulators[i].initdata;
+ config.driver_data = s5m8767;
+
+ rdev[i] = regulator_register(&regulators[id], &config);
if (IS_ERR(rdev[i])) {
ret = PTR_ERR(rdev[i]);
dev_err(s5m8767->dev, "regulator init failed for %d\n",
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-13 09:22:18 +0000