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path: root/drivers/regulator/pfuze100-regulator.c
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Diffstat (limited to 'drivers/regulator/pfuze100-regulator.c')
-rw-r--r--drivers/regulator/pfuze100-regulator.c112
1 files changed, 102 insertions, 10 deletions
diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c
index 8d9dbcc775ea..31c3a236120a 100644
--- a/drivers/regulator/pfuze100-regulator.c
+++ b/drivers/regulator/pfuze100-regulator.c
@@ -17,6 +17,8 @@
#include <linux/slab.h>
#include <linux/regmap.h>
+#define PFUZE_FLAG_DISABLE_SW BIT(1)
+
#define PFUZE_NUMREGS 128
#define PFUZE100_VOL_OFFSET 0
#define PFUZE100_STANDBY_OFFSET 1
@@ -44,16 +46,18 @@
#define PFUZE100_VGEN5VOL 0x70
#define PFUZE100_VGEN6VOL 0x71
-enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3 };
+enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3, PFUZE3001 = 0x31, };
struct pfuze_regulator {
struct regulator_desc desc;
unsigned char stby_reg;
unsigned char stby_mask;
+ bool sw_reg;
};
struct pfuze_chip {
int chip_id;
+ int flags;
struct regmap *regmap;
struct device *dev;
struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
@@ -92,6 +96,7 @@ static const struct i2c_device_id pfuze_device_id[] = {
{.name = "pfuze100", .driver_data = PFUZE100},
{.name = "pfuze200", .driver_data = PFUZE200},
{.name = "pfuze3000", .driver_data = PFUZE3000},
+ {.name = "pfuze3001", .driver_data = PFUZE3001},
{ }
};
MODULE_DEVICE_TABLE(i2c, pfuze_device_id);
@@ -100,6 +105,7 @@ static const struct of_device_id pfuze_dt_ids[] = {
{ .compatible = "fsl,pfuze100", .data = (void *)PFUZE100},
{ .compatible = "fsl,pfuze200", .data = (void *)PFUZE200},
{ .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000},
+ { .compatible = "fsl,pfuze3001", .data = (void *)PFUZE3001},
{ }
};
MODULE_DEVICE_TABLE(of, pfuze_dt_ids);
@@ -108,10 +114,28 @@ static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
+ bool reg_has_ramp_delay;
unsigned int ramp_bits;
int ret;
- if (id < PFUZE100_SWBST) {
+ switch (pfuze100->chip_id) {
+ case PFUZE3001:
+ /* no dynamic voltage scaling for PF3001 */
+ reg_has_ramp_delay = false;
+ break;
+ case PFUZE3000:
+ reg_has_ramp_delay = (id < PFUZE3000_SWBST);
+ break;
+ case PFUZE200:
+ reg_has_ramp_delay = (id < PFUZE200_SWBST);
+ break;
+ case PFUZE100:
+ default:
+ reg_has_ramp_delay = (id < PFUZE100_SWBST);
+ break;
+ }
+
+ if (reg_has_ramp_delay) {
ramp_delay = 12500 / ramp_delay;
ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
ret = regmap_update_bits(pfuze100->regmap,
@@ -119,8 +143,9 @@ static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
0xc0, ramp_bits << 6);
if (ret < 0)
dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
- } else
+ } else {
ret = -EACCES;
+ }
return ret;
}
@@ -142,6 +167,14 @@ static const struct regulator_ops pfuze100_fixed_regulator_ops = {
};
static const struct regulator_ops pfuze100_sw_regulator_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .set_ramp_delay = pfuze100_set_ramp_delay,
+};
+
+static const struct regulator_ops pfuze100_sw_disable_regulator_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
@@ -192,13 +225,11 @@ static const struct regulator_ops pfuze100_swb_regulator_ops = {
.vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
.vsel_mask = 0x3f, \
.enable_reg = (base) + PFUZE100_MODE_OFFSET, \
- .enable_val = 0xc, \
- .disable_val = 0x0, \
.enable_mask = 0xf, \
- .enable_time = 500, \
}, \
.stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
.stby_mask = 0x3f, \
+ .sw_reg = true, \
}
#define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \
@@ -361,6 +392,19 @@ static struct pfuze_regulator pfuze3000_regulators[] = {
PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
};
+static struct pfuze_regulator pfuze3001_regulators[] = {
+ PFUZE100_SWB_REG(PFUZE3001, SW1, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a),
+ PFUZE100_SWB_REG(PFUZE3001, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
+ PFUZE3000_SW3_REG(PFUZE3001, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
+ PFUZE100_SWB_REG(PFUZE3001, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
+ PFUZE100_VGEN_REG(PFUZE3001, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
+ PFUZE100_VGEN_REG(PFUZE3001, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
+ PFUZE3000_VCC_REG(PFUZE3001, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
+ PFUZE3000_VCC_REG(PFUZE3001, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
+ PFUZE100_VGEN_REG(PFUZE3001, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
+ PFUZE100_VGEN_REG(PFUZE3001, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
+};
+
#ifdef CONFIG_OF
/* PFUZE100 */
static struct of_regulator_match pfuze100_matches[] = {
@@ -418,6 +462,21 @@ static struct of_regulator_match pfuze3000_matches[] = {
{ .name = "vldo4", },
};
+/* PFUZE3001 */
+static struct of_regulator_match pfuze3001_matches[] = {
+
+ { .name = "sw1", },
+ { .name = "sw2", },
+ { .name = "sw3", },
+ { .name = "vsnvs", },
+ { .name = "vldo1", },
+ { .name = "vldo2", },
+ { .name = "vccsd", },
+ { .name = "v33", },
+ { .name = "vldo3", },
+ { .name = "vldo4", },
+};
+
static struct of_regulator_match *pfuze_matches;
static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
@@ -430,6 +489,9 @@ static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
if (!np)
return -EINVAL;
+ if (of_property_read_bool(np, "fsl,pfuze-support-disable-sw"))
+ chip->flags |= PFUZE_FLAG_DISABLE_SW;
+
parent = of_get_child_by_name(np, "regulators");
if (!parent) {
dev_err(dev, "regulators node not found\n");
@@ -437,6 +499,11 @@ static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
}
switch (chip->chip_id) {
+ case PFUZE3001:
+ pfuze_matches = pfuze3001_matches;
+ ret = of_regulator_match(dev, parent, pfuze3001_matches,
+ ARRAY_SIZE(pfuze3001_matches));
+ break;
case PFUZE3000:
pfuze_matches = pfuze3000_matches;
ret = of_regulator_match(dev, parent, pfuze3000_matches,
@@ -508,7 +575,8 @@ static int pfuze_identify(struct pfuze_chip *pfuze_chip)
*/
dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8");
} else if ((value & 0x0f) != pfuze_chip->chip_id &&
- (value & 0xf0) >> 4 != pfuze_chip->chip_id) {
+ (value & 0xf0) >> 4 != pfuze_chip->chip_id &&
+ (value != pfuze_chip->chip_id)) {
/* device id NOT match with your setting */
dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
return -ENODEV;
@@ -588,6 +656,13 @@ static int pfuze100_regulator_probe(struct i2c_client *client,
/* use the right regulators after identify the right device */
switch (pfuze_chip->chip_id) {
+ case PFUZE3001:
+ pfuze_chip->pfuze_regulators = pfuze3001_regulators;
+ regulator_num = ARRAY_SIZE(pfuze3001_regulators);
+ sw_check_start = PFUZE3001_SW2;
+ sw_check_end = PFUZE3001_SW2;
+ sw_hi = 1 << 3;
+ break;
case PFUZE3000:
pfuze_chip->pfuze_regulators = pfuze3000_regulators;
regulator_num = ARRAY_SIZE(pfuze3000_regulators);
@@ -611,7 +686,8 @@ static int pfuze100_regulator_probe(struct i2c_client *client,
}
dev_info(&client->dev, "pfuze%s found.\n",
(pfuze_chip->chip_id == PFUZE100) ? "100" :
- ((pfuze_chip->chip_id == PFUZE200) ? "200" : "3000"));
+ (((pfuze_chip->chip_id == PFUZE200) ? "200" :
+ ((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001"))));
memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators,
sizeof(pfuze_chip->regulator_descs));
@@ -636,7 +712,8 @@ static int pfuze100_regulator_probe(struct i2c_client *client,
if (i >= sw_check_start && i <= sw_check_end) {
regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val);
if (val & sw_hi) {
- if (pfuze_chip->chip_id == PFUZE3000) {
+ if (pfuze_chip->chip_id == PFUZE3000 ||
+ pfuze_chip->chip_id == PFUZE3001) {
desc->volt_table = pfuze3000_sw2hi;
desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi);
} else {
@@ -647,6 +724,21 @@ static int pfuze100_regulator_probe(struct i2c_client *client,
}
}
+ /*
+ * Allow SW regulators to turn off. Checking it trough a flag is
+ * a workaround to keep the backward compatibility with existing
+ * old dtb's which may relay on the fact that we didn't disable
+ * the switched regulator till yet.
+ */
+ if (pfuze_chip->flags & PFUZE_FLAG_DISABLE_SW) {
+ if (pfuze_chip->regulator_descs[i].sw_reg) {
+ desc->ops = &pfuze100_sw_disable_regulator_ops;
+ desc->enable_val = 0x8;
+ desc->disable_val = 0x0;
+ desc->enable_time = 500;
+ }
+ }
+
config.dev = &client->dev;
config.init_data = init_data;
config.driver_data = pfuze_chip;
@@ -675,5 +767,5 @@ static struct i2c_driver pfuze_driver = {
module_i2c_driver(pfuze_driver);
MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
-MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000 PMIC");
+MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000/3001 PMIC");
MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 05:41:26 +0000