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Message-Id: <20230406171806.948290-9-cristian.ciocaltea@collabora.com>
Date: Thu, 6 Apr 2023 20:18:06 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Heiko Stuebner <heiko@...ech.de>,
Bjorn Andersson <andersson@...nel.org>,
Joseph Chen <chenjh@...k-chips.com>,
Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
kernel@...labora.com
Subject: [PATCH v2 8/8] regulator: fan53555: Add support for RK860X
Extend the existing fan53555 driver to support the Rockchip RK860X
regulators.
RK8600/RK8601 are pretty similar to the FAN53555 regulators.
RK8602/RK8603 are a bit different, having a wider output voltage
selection range, from 0.5 V to 1.5 V in 6.25 mV steps. They also use
additional VSEL0/VSEL1 registers for the voltage selector, but the
enable and mode bits are still located in the original FAN53555 specific
VSEL0/VSEL1 registers.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
drivers/regulator/fan53555.c | 121 ++++++++++++++++++++++++++++++++++-
1 file changed, 118 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c
index acf14ba7aaa6..130f3dbe9840 100644
--- a/drivers/regulator/fan53555.c
+++ b/drivers/regulator/fan53555.c
@@ -26,6 +26,9 @@
#define FAN53555_VSEL0 0x00
#define FAN53555_VSEL1 0x01
+#define RK8602_VSEL0 0x06
+#define RK8602_VSEL1 0x07
+
#define TCS4525_VSEL0 0x11
#define TCS4525_VSEL1 0x10
#define TCS4525_TIME 0x13
@@ -55,6 +58,7 @@
#define FAN53555_NVOLTAGES 64 /* Numbers of voltages */
#define FAN53526_NVOLTAGES 128
+#define RK8602_NVOLTAGES 160
#define TCS_VSEL0_MODE BIT(7)
#define TCS_VSEL1_MODE BIT(6)
@@ -64,6 +68,8 @@
enum fan53555_vendor {
FAN53526_VENDOR_FAIRCHILD = 0,
FAN53555_VENDOR_FAIRCHILD,
+ FAN53555_VENDOR_ROCKCHIP, /* RK8600, RK8601 */
+ RK8602_VENDOR_ROCKCHIP, /* RK8602, RK8603 */
FAN53555_VENDOR_SILERGY,
FAN53526_VENDOR_TCS,
};
@@ -87,6 +93,14 @@ enum {
FAN53555_CHIP_ID_08 = 8,
};
+enum {
+ RK8600_CHIP_ID_08 = 8, /* RK8600, RK8601 */
+};
+
+enum {
+ RK8602_CHIP_ID_10 = 10, /* RK8602, RK8603 */
+};
+
enum {
TCS4525_CHIP_ID_12 = 12,
};
@@ -117,6 +131,8 @@ struct fan53555_device_info {
/* Voltage setting register */
unsigned int vol_reg;
unsigned int sleep_reg;
+ unsigned int en_reg;
+ unsigned int sleep_en_reg;
/* Voltage range and step(linear) */
unsigned int vsel_min;
unsigned int vsel_step;
@@ -159,7 +175,7 @@ static int fan53555_set_suspend_enable(struct regulator_dev *rdev)
{
struct fan53555_device_info *di = rdev_get_drvdata(rdev);
- return regmap_update_bits(rdev->regmap, di->sleep_reg,
+ return regmap_update_bits(rdev->regmap, di->sleep_en_reg,
VSEL_BUCK_EN, VSEL_BUCK_EN);
}
@@ -167,7 +183,7 @@ static int fan53555_set_suspend_disable(struct regulator_dev *rdev)
{
struct fan53555_device_info *di = rdev_get_drvdata(rdev);
- return regmap_update_bits(rdev->regmap, di->sleep_reg,
+ return regmap_update_bits(rdev->regmap, di->sleep_en_reg,
VSEL_BUCK_EN, 0);
}
@@ -317,6 +333,50 @@ static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
return 0;
}
+static int fan53555_voltages_setup_rockchip(struct fan53555_device_info *di)
+{
+ /* Init voltage range and step */
+ switch (di->chip_id) {
+ case RK8600_CHIP_ID_08:
+ di->vsel_min = 712500;
+ di->vsel_step = 12500;
+ break;
+ default:
+ dev_err(di->dev,
+ "Chip ID %d not supported!\n", di->chip_id);
+ return -EINVAL;
+ }
+ di->slew_reg = FAN53555_CONTROL;
+ di->slew_mask = CTL_SLEW_MASK;
+ di->ramp_delay_table = slew_rates;
+ di->n_ramp_values = ARRAY_SIZE(slew_rates);
+ di->vsel_count = FAN53555_NVOLTAGES;
+
+ return 0;
+}
+
+static int rk8602_voltages_setup_rockchip(struct fan53555_device_info *di)
+{
+ /* Init voltage range and step */
+ switch (di->chip_id) {
+ case RK8602_CHIP_ID_10:
+ di->vsel_min = 500000;
+ di->vsel_step = 6250;
+ break;
+ default:
+ dev_err(di->dev,
+ "Chip ID %d not supported!\n", di->chip_id);
+ return -EINVAL;
+ }
+ di->slew_reg = FAN53555_CONTROL;
+ di->slew_mask = CTL_SLEW_MASK;
+ di->ramp_delay_table = slew_rates;
+ di->n_ramp_values = ARRAY_SIZE(slew_rates);
+ di->vsel_count = RK8602_NVOLTAGES;
+
+ return 0;
+}
+
static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
{
/* Init voltage range and step */
@@ -377,6 +437,7 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
switch (di->vendor) {
case FAN53526_VENDOR_FAIRCHILD:
case FAN53555_VENDOR_FAIRCHILD:
+ case FAN53555_VENDOR_ROCKCHIP:
case FAN53555_VENDOR_SILERGY:
switch (pdata->sleep_vsel_id) {
case FAN53555_VSEL_ID_0:
@@ -391,6 +452,27 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
dev_err(di->dev, "Invalid VSEL ID!\n");
return -EINVAL;
}
+ di->sleep_en_reg = di->sleep_reg;
+ di->en_reg = di->vol_reg;
+ break;
+ case RK8602_VENDOR_ROCKCHIP:
+ switch (pdata->sleep_vsel_id) {
+ case FAN53555_VSEL_ID_0:
+ di->sleep_reg = RK8602_VSEL0;
+ di->vol_reg = RK8602_VSEL1;
+ di->sleep_en_reg = FAN53555_VSEL0;
+ di->en_reg = FAN53555_VSEL1;
+ break;
+ case FAN53555_VSEL_ID_1:
+ di->sleep_reg = RK8602_VSEL1;
+ di->vol_reg = RK8602_VSEL0;
+ di->sleep_en_reg = FAN53555_VSEL1;
+ di->en_reg = FAN53555_VSEL0;
+ break;
+ default:
+ dev_err(di->dev, "Invalid VSEL ID!\n");
+ return -EINVAL;
+ }
break;
case FAN53526_VENDOR_TCS:
switch (pdata->sleep_vsel_id) {
@@ -406,6 +488,8 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
dev_err(di->dev, "Invalid VSEL ID!\n");
return -EINVAL;
}
+ di->sleep_en_reg = di->sleep_reg;
+ di->en_reg = di->vol_reg;
break;
default:
dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
@@ -427,10 +511,23 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
}
break;
case FAN53555_VENDOR_FAIRCHILD:
+ case FAN53555_VENDOR_ROCKCHIP:
case FAN53555_VENDOR_SILERGY:
di->mode_reg = di->vol_reg;
di->mode_mask = VSEL_MODE;
break;
+ case RK8602_VENDOR_ROCKCHIP:
+ di->mode_mask = VSEL_MODE;
+
+ switch (pdata->sleep_vsel_id) {
+ case FAN53555_VSEL_ID_0:
+ di->mode_reg = FAN53555_VSEL1;
+ break;
+ case FAN53555_VSEL_ID_1:
+ di->mode_reg = FAN53555_VSEL0;
+ break;
+ }
+ break;
case FAN53526_VENDOR_TCS:
di->mode_reg = TCS4525_COMMAND;
@@ -456,6 +553,12 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
case FAN53555_VENDOR_FAIRCHILD:
ret = fan53555_voltages_setup_fairchild(di);
break;
+ case FAN53555_VENDOR_ROCKCHIP:
+ ret = fan53555_voltages_setup_rockchip(di);
+ break;
+ case RK8602_VENDOR_ROCKCHIP:
+ ret = rk8602_voltages_setup_rockchip(di);
+ break;
case FAN53555_VENDOR_SILERGY:
ret = fan53555_voltages_setup_silergy(di);
break;
@@ -481,7 +584,7 @@ static int fan53555_regulator_register(struct fan53555_device_info *di,
rdesc->ops = &fan53555_regulator_ops;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->n_voltages = di->vsel_count;
- rdesc->enable_reg = di->vol_reg;
+ rdesc->enable_reg = di->en_reg;
rdesc->enable_mask = VSEL_BUCK_EN;
rdesc->min_uV = di->vsel_min;
rdesc->uV_step = di->vsel_step;
@@ -531,6 +634,12 @@ static const struct of_device_id __maybe_unused fan53555_dt_ids[] = {
}, {
.compatible = "fcs,fan53555",
.data = (void *)FAN53555_VENDOR_FAIRCHILD
+ }, {
+ .compatible = "rockchip,rk8600",
+ .data = (void *)FAN53555_VENDOR_ROCKCHIP
+ }, {
+ .compatible = "rockchip,rk8602",
+ .data = (void *)RK8602_VENDOR_ROCKCHIP
}, {
.compatible = "silergy,syr827",
.data = (void *)FAN53555_VENDOR_SILERGY,
@@ -637,6 +746,12 @@ static const struct i2c_device_id fan53555_id[] = {
}, {
.name = "fan53555",
.driver_data = FAN53555_VENDOR_FAIRCHILD
+ }, {
+ .name = "rk8600",
+ .driver_data = FAN53555_VENDOR_ROCKCHIP
+ }, {
+ .name = "rk8602",
+ .driver_data = RK8602_VENDOR_ROCKCHIP
}, {
.name = "syr827",
.driver_data = FAN53555_VENDOR_SILERGY
--
2.40.0
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