[PATCH V3 3/3] regulator: da9121: Add DA914x support

Adam Ward
2021-11-23T23:28:12Z

Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 113 ++++++++++++++++++++++++++-
drivers/regulator/da9121-regulator.h | 21 ++++-
2 files changed, 129 insertions(+), 5 deletions(-)

diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index a5a83b772a85..c497b82fb518 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -86,6 +86,22 @@ static struct da9121_range da9121_3A_1phase_current = {
.reg_max = 6,
};

+static struct da9121_range da914x_40A_4phase_current = {
+ .val_min = 14000000,
+ .val_max = 80000000,
+ .val_stp = 2000000,
+ .reg_min = 1,
+ .reg_max = 14,
+};
+
+static struct da9121_range da914x_20A_2phase_current = {
+ .val_min = 7000000,
+ .val_max = 40000000,
+ .val_stp = 2000000,
+ .reg_min = 1,
+ .reg_max = 14,
+};
+
struct da9121_variant_info {
int num_bucks;
int num_phases;
@@ -97,6 +113,8 @@ static const struct da9121_variant_info variant_parameters[] = {
{ 2, 1, &da9121_3A_1phase_current }, //DA9121_TYPE_DA9220_DA9132
{ 2, 1, &da9121_5A_1phase_current }, //DA9121_TYPE_DA9122_DA9131
{ 1, 2, &da9121_6A_2phase_current }, //DA9121_TYPE_DA9217
+ { 1, 4, &da914x_40A_4phase_current }, //DA9121_TYPE_DA9141
+ { 1, 2, &da914x_20A_2phase_current }, //DA9121_TYPE_DA9142
};

struct da9121_field {
@@ -253,6 +271,11 @@ static int da9121_set_current_limit(struct regulator_dev *rdev,
goto error;
}

+ if (rdev->desc->ops->is_enabled(rdev)) {
+ ret = -EBUSY;
+ goto error;
+ }
+
ret = da9121_ceiling_selector(rdev, min_ua, max_ua, &sel);
if (ret < 0)
goto error;
@@ -537,11 +560,65 @@ static const struct regulator_desc da9217_reg = {
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
};

+#define DA914X_MIN_MV 500
+#define DA914X_MAX_MV 1000
+#define DA914X_STEP_MV 10
+#define DA914X_MIN_SEL (DA914X_MIN_MV / DA914X_STEP_MV)
+#define DA914X_N_VOLTAGES (((DA914X_MAX_MV - DA914X_MIN_MV) / DA914X_STEP_MV) \
+ + 1 + DA914X_MIN_SEL)
+
+static const struct regulator_desc da9141_reg = {
+ .id = DA9141_IDX_BUCK1,
+ .name = "DA9141",
+ .of_match = "buck1",
+ .of_parse_cb = da9121_of_parse_cb,
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA914X_N_VOLTAGES,
+ .min_uV = DA914X_MIN_MV * 1000,
+ .uV_step = DA914X_STEP_MV * 1000,
+ .linear_min_sel = DA914X_MIN_SEL,
+ .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+ .enable_reg = DA9121_REG_BUCK_BUCK1_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ /* Default value of BUCK_BUCK1_0.CH1_SRC_DVC_UP */
+ .ramp_delay = 20000,
+ /* tBUCK_EN */
+ .enable_time = 20,
+};
+
+static const struct regulator_desc da9142_reg = {
+ .id = DA914X_IDX_BUCK1,
+ .name = "DA9142 BUCK1",
+ .of_match = "buck1",
+ .of_parse_cb = da9121_of_parse_cb,
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA914X_N_VOLTAGES,
+ .min_uV = DA914X_MIN_MV * 1000,
+ .uV_step = DA914X_STEP_MV * 1000,
+ .linear_min_sel = DA914X_MIN_SEL,
+ .enable_reg = DA9121_REG_BUCK_BUCK1_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+};
+
+
static const struct regulator_desc *local_da9121_regulators[][DA9121_IDX_MAX] = {
[DA9121_TYPE_DA9121_DA9130] = { &da9121_reg, NULL },
[DA9121_TYPE_DA9220_DA9132] = { &da9220_reg[0], &da9220_reg[1] },
[DA9121_TYPE_DA9122_DA9131] = { &da9122_reg[0], &da9122_reg[1] },
[DA9121_TYPE_DA9217] = { &da9217_reg, NULL },
+ [DA9121_TYPE_DA9141] = { &da9141_reg, NULL },
+ [DA9121_TYPE_DA9142] = { &da9142_reg, NULL },
};

static void da9121_status_poll_on(struct work_struct *work)
@@ -835,7 +912,7 @@ static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
goto error;
}

- if (device_id != DA9121_DEVICE_ID) {
+ if ((device_id != DA9121_DEVICE_ID) && (device_id != DA914X_DEVICE_ID) {
dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id);
ret = -ENODEV;
goto error;
@@ -877,6 +954,22 @@ static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
break;
}

+ if (device_id == DA914X_DEVICE_ID) {
+ switch (chip->subvariant_id) {
+ case DA9121_SUBTYPE_DA9141:
+ type = "DA9141";
+ config_match = (variant_vrc == DA9141_VARIANT_VRC);
+ break;
+ case DA9121_SUBTYPE_DA9142:
+ type = "DA9142";
+ config_match = (variant_vrc == DA9142_VARIANT_VRC);
+ break;
+ default:
+ type = "Unknown";
+ break;
+ }
+ }
+
dev_info(chip->dev,
"Device detected (device-ID: 0x%02X, var-ID: 0x%02X, %s)\n",
device_id, variant_id, type);
@@ -890,8 +983,10 @@ static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
variant_mrc = (variant_id & DA9121_MASK_OTP_VARIANT_ID_MRC)
>> DA9121_SHIFT_OTP_VARIANT_ID_MRC;

- if ((device_id == DA9121_DEVICE_ID) &&
- (variant_mrc < DA9121_VARIANT_MRC_BASE)) {
+ if (((device_id == DA9121_DEVICE_ID) &&
+ (variant_mrc < DA9121_VARIANT_MRC_BASE)) ||
+ ((device_id == DA914X_DEVICE_ID) &&
+ (variant_mrc != DA9141_VARIANT_MRC_BASE))) {
dev_err(chip->dev,
"Cannot support variant MRC: 0x%02X\n", variant_mrc);
ret = -EINVAL;
@@ -931,6 +1026,14 @@ static int da9121_assign_chip_model(struct i2c_client *i2c,
chip->variant_id = DA9121_TYPE_DA9220_DA9132;
regmap = &da9121_2ch_regmap_config;
break;
+ case DA9121_SUBTYPE_DA9141:
+ chip->variant_id = DA9121_TYPE_DA9141;
+ regmap = &da9121_1ch_regmap_config;
+ break;
+ case DA9121_SUBTYPE_DA9142:
+ chip->variant_id = DA9121_TYPE_DA9142;
+ regmap = &da9121_2ch_regmap_config;
+ break;
}

/* Set these up for of_regulator_match call which may want .of_map_modes */
@@ -1010,6 +1113,8 @@ static const struct of_device_id da9121_dt_ids[] = {
{ .compatible = "dlg,da9131", .data = (void *) DA9121_SUBTYPE_DA9131 },
{ .compatible = "dlg,da9220", .data = (void *) DA9121_SUBTYPE_DA9220 },
{ .compatible = "dlg,da9132", .data = (void *) DA9121_SUBTYPE_DA9132 },
+ { .compatible = "dlg,da9141", .data = (void *) DA9121_SUBTYPE_DA9141 },
+ { .compatible = "dlg,da9142", .data = (void *) DA9121_SUBTYPE_DA9142 },
{ }
};
MODULE_DEVICE_TABLE(of, da9121_dt_ids);
@@ -1084,6 +1189,8 @@ static const struct i2c_device_id da9121_i2c_id[] = {
{"da9131", DA9121_TYPE_DA9122_DA9131},
{"da9220", DA9121_TYPE_DA9220_DA9132},
{"da9132", DA9121_TYPE_DA9220_DA9132},
+ {"da9141", DA9121_TYPE_DA9141},
+ {"da9142", DA9121_TYPE_DA9142},
{},
};
MODULE_DEVICE_TABLE(i2c, da9121_i2c_id);
diff --git a/drivers/regulator/da9121-regulator.h b/drivers/regulator/da9121-regulator.h
index 357f416e17c1..a328a0bdfa29 100644
--- a/drivers/regulator/da9121-regulator.h
+++ b/drivers/regulator/da9121-regulator.h
@@ -26,7 +26,9 @@ enum da9121_variant {
DA9121_TYPE_DA9121_DA9130,
DA9121_TYPE_DA9220_DA9132,
DA9121_TYPE_DA9122_DA9131,
- DA9121_TYPE_DA9217
+ DA9121_TYPE_DA9217,
+ DA9121_TYPE_DA9141,
+ DA9121_TYPE_DA9142
};

enum da9121_subvariant {
@@ -36,7 +38,9 @@ enum da9121_subvariant {
DA9121_SUBTYPE_DA9132,
DA9121_SUBTYPE_DA9122,
DA9121_SUBTYPE_DA9131,
- DA9121_SUBTYPE_DA9217
+ DA9121_SUBTYPE_DA9217,
+ DA9121_SUBTYPE_DA9141,
+ DA9121_SUBTYPE_DA9142
};

/* Minimum, maximum and default polling millisecond periods are provided
@@ -70,6 +74,14 @@ enum da9121_subvariant {
#define DA9121_REG_SYS_GPIO1_1 0x13
#define DA9121_REG_SYS_GPIO2_0 0x14
#define DA9121_REG_SYS_GPIO2_1 0x15
+#define DA914x_REG_SYS_GPIO3_0 0x16
+#define DA914x_REG_SYS_GPIO3_1 0x17
+#define DA914x_REG_SYS_GPIO4_0 0x18
+#define DA914x_REG_SYS_GPIO4_1 0x19
+#define DA914x_REG_SYS_ADMUX1_0 0x1A
+#define DA914x_REG_SYS_ADMUX1_1 0x1B
+#define DA914x_REG_SYS_ADMUX2_0 0x1C
+#define DA914x_REG_SYS_ADMUX2_1 0x1D
#define DA9121_REG_BUCK_BUCK1_0 0x20
#define DA9121_REG_BUCK_BUCK1_1 0x21
#define DA9121_REG_BUCK_BUCK1_2 0x22
@@ -276,6 +288,7 @@ enum da9121_subvariant {
#define DA9121_MASK_OTP_DEVICE_ID_DEV_ID 0xFF

#define DA9121_DEVICE_ID 0x05
+#define DA914x_DEVICE_ID 0x26

/* DA9121_REG_OTP_VARIANT_ID */

@@ -293,6 +306,10 @@ enum da9121_subvariant {
#define DA9131_VARIANT_VRC 0x1
#define DA9132_VARIANT_VRC 0x2

+#define DA914x_VARIANT_MRC_BASE 0x0
+#define DA9141_VARIANT_VRC 0x1
+#define DA9142_VARIANT_VRC 0x2
+
/* DA9121_REG_OTP_CUSTOMER_ID */

#define DA9121_MASK_OTP_CUSTOMER_ID_CUST_ID 0xFF
--
2.25.1