regulator: qcom_usb_vbus: add pm4125 VBUS regulator support

Rakesh Kota <rakesh.kota@oss.qualcomm.com> says:

Add support for PM4125 USB VBUS regulator. Unlike PM8150B which uses
a current-limit selector, PM4125 uses a 2-bit VBOOST voltage selector
supporting 4.25 V, 4.5 V, 4.75 V and 5.0 V output.

Link: https://patch.msgid.link/20260706-add_pm4125-vbus-reg-v3-0-999d78a87b81@oss.qualcomm.com

16 files changed, 88 insertions, 29 deletions

diff --git a/drivers/regulator/adp5055-regulator.c b/drivers/regulator/adp5055-regulator.c
index bba138360df1..a79274d530df 100644
--- a/drivers/regulator/adp5055-regulator.c
+++ b/drivers/regulator/adp5055-regulator.c
@@ -9,7 +9,6 @@
 #include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
-#include <linux/mod_devicetable.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
diff --git a/drivers/regulator/bd71828-regulator.c b/drivers/regulator/bd71828-regulator.c
index bd61caa8284a..2ced81df0c02 100644
--- a/drivers/regulator/bd71828-regulator.c
+++ b/drivers/regulator/bd71828-regulator.c
@@ -11,7 +11,6 @@
 #include <linux/mfd/rohm-bd71828.h>
 #include <linux/mfd/rohm-bd72720.h>
 #include <linux/module.h>
-#include <linux/mod_devicetable.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
diff --git a/drivers/regulator/max77541-regulator.c b/drivers/regulator/max77541-regulator.c
index f2365930e9a9..09094a270c5a 100644
--- a/drivers/regulator/max77541-regulator.c
+++ b/drivers/regulator/max77541-regulator.c
@@ -5,7 +5,6 @@
  */
 
 #include <linux/mfd/max77541.h>
-#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
diff --git a/drivers/regulator/max77675-regulator.c b/drivers/regulator/max77675-regulator.c
index ebea08ddf4b8..23b54b44f8b7 100644
--- a/drivers/regulator/max77675-regulator.c
+++ b/drivers/regulator/max77675-regulator.c
@@ -5,7 +5,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/mod_devicetable.h>
 #include <linux/cleanup.h>
 #include <linux/slab.h>
 #include <linux/of.h>
diff --git a/drivers/regulator/mt6370-regulator.c b/drivers/regulator/mt6370-regulator.c
index a4ac4a42c108..6997beb51409 100644
--- a/drivers/regulator/mt6370-regulator.c
+++ b/drivers/regulator/mt6370-regulator.c
@@ -4,7 +4,6 @@
 #include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
diff --git a/drivers/regulator/pv88080-regulator.c b/drivers/regulator/pv88080-regulator.c
index 3dc48d059791..b96afbf11ff3 100644
--- a/drivers/regulator/pv88080-regulator.c
+++ b/drivers/regulator/pv88080-regulator.c
@@ -5,7 +5,6 @@
 
 #include <linux/err.h>
 #include <linux/i2c.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/init.h>
diff --git a/drivers/regulator/qcom_usb_vbus-regulator.c b/drivers/regulator/qcom_usb_vbus-regulator.c
index cd94ed67621f..9aea68876284 100644
--- a/drivers/regulator/qcom_usb_vbus-regulator.c
+++ b/drivers/regulator/qcom_usb_vbus-regulator.c
@@ -20,10 +20,35 @@
 #define OTG_CFG				0x53
 #define OTG_EN_SRC_CFG			BIT(1)
 
+#define PM4125_VBOOST_EN		0x50
+#define PM4125_VBOOST_SEL		0x52
+#define PM4125_VBOOST_CFG_MASK		GENMASK(1, 0)
+#define PM4125_VBOOST_CFG		0x56
+#define PM4125_VBOOST_EN_SRC_CFG	BIT(0)
+
+struct qcom_usb_vbus_reg_data {
+	u16 cmd_otg;
+	u16 otg_cfg;
+	u8  otg_en_src_cfg;
+	u16 csel_reg;
+	u8 csel_mask;
+	const unsigned int *curr_table;
+	unsigned int n_current_limits;
+	u16 vsel_reg;
+	u8 vsel_mask;
+	const unsigned int *volt_table;
+	unsigned int n_voltages;
+	const struct regulator_ops *ops;
+};
+
 static const unsigned int curr_table[] = {
 	500000, 1000000, 1500000, 2000000, 2500000, 3000000,
 };
 
+static const unsigned int pm4125_vboost_table[] = {
+	4250000, 4500000, 4750000, 5000000,
+};
+
 static const struct regulator_ops qcom_usb_vbus_reg_ops = {
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -32,19 +57,43 @@ static const struct regulator_ops qcom_usb_vbus_reg_ops = {
 	.set_current_limit = regulator_set_current_limit_regmap,
 };
 
-static struct regulator_desc qcom_usb_vbus_rdesc = {
-	.name = "usb_vbus",
-	.ops = &qcom_usb_vbus_reg_ops,
-	.owner = THIS_MODULE,
-	.type = REGULATOR_VOLTAGE,
+static const struct qcom_usb_vbus_reg_data pm8150b_data = {
+	.cmd_otg = CMD_OTG,
+	.otg_cfg = OTG_CFG,
+	.otg_en_src_cfg = OTG_EN_SRC_CFG,
+	.csel_reg = OTG_CURRENT_LIMIT_CFG,
+	.csel_mask = OTG_CURRENT_LIMIT_MASK,
 	.curr_table = curr_table,
 	.n_current_limits = ARRAY_SIZE(curr_table),
+	.ops = &qcom_usb_vbus_reg_ops,
+};
+
+static const struct regulator_ops qcom_usb_vbus_pm4125_reg_ops = {
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.list_voltage = regulator_list_voltage_table,
+};
+
+static const struct qcom_usb_vbus_reg_data pm4125_data = {
+	.cmd_otg = PM4125_VBOOST_EN,
+	.otg_cfg = PM4125_VBOOST_CFG,
+	.otg_en_src_cfg = PM4125_VBOOST_EN_SRC_CFG,
+	.vsel_reg = PM4125_VBOOST_SEL,
+	.vsel_mask = PM4125_VBOOST_CFG_MASK,
+	.volt_table = pm4125_vboost_table,
+	.n_voltages = ARRAY_SIZE(pm4125_vboost_table),
+	.ops = &qcom_usb_vbus_pm4125_reg_ops,
 };
 
 static int qcom_usb_vbus_regulator_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	const struct qcom_usb_vbus_reg_data *data;
 	struct regulator_dev *rdev;
+	struct regulator_desc *rdesc;
 	struct regmap *regmap;
 	struct regulator_config config = { };
 	struct regulator_init_data *init_data;
@@ -57,27 +106,51 @@ static int qcom_usb_vbus_regulator_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
 	regmap = dev_get_regmap(dev->parent, NULL);
 	if (!regmap) {
 		dev_err(dev, "Failed to get regmap\n");
 		return -ENOENT;
 	}
 
-	init_data = of_get_regulator_init_data(dev, dev->of_node,
-					       &qcom_usb_vbus_rdesc);
+	rdesc = devm_kzalloc(dev, sizeof(*rdesc), GFP_KERNEL);
+	if (!rdesc)
+		return -ENOMEM;
+
+	rdesc->name = "usb_vbus";
+	rdesc->ops = data->ops;
+	rdesc->owner = THIS_MODULE;
+	rdesc->type = REGULATOR_VOLTAGE;
+	rdesc->enable_reg = base + data->cmd_otg;
+	rdesc->enable_mask = OTG_EN;
+
+	if (data->curr_table) {
+		rdesc->curr_table = data->curr_table;
+		rdesc->n_current_limits = data->n_current_limits;
+		rdesc->csel_reg = base + data->csel_reg;
+		rdesc->csel_mask = data->csel_mask;
+	}
+
+	if (data->volt_table) {
+		rdesc->volt_table = data->volt_table;
+		rdesc->n_voltages = data->n_voltages;
+		rdesc->vsel_reg = base + data->vsel_reg;
+		rdesc->vsel_mask = data->vsel_mask;
+	}
+
+	init_data = of_get_regulator_init_data(dev, dev->of_node, rdesc);
 	if (!init_data)
 		return -ENOMEM;
 
-	qcom_usb_vbus_rdesc.enable_reg = base + CMD_OTG;
-	qcom_usb_vbus_rdesc.enable_mask = OTG_EN;
-	qcom_usb_vbus_rdesc.csel_reg = base + OTG_CURRENT_LIMIT_CFG;
-	qcom_usb_vbus_rdesc.csel_mask = OTG_CURRENT_LIMIT_MASK;
 	config.dev = dev;
 	config.init_data = init_data;
 	config.of_node = dev->of_node;
 	config.regmap = regmap;
 
-	rdev = devm_regulator_register(dev, &qcom_usb_vbus_rdesc, &config);
+	rdev = devm_regulator_register(dev, rdesc, &config);
 	if (IS_ERR(rdev)) {
 		ret = PTR_ERR(rdev);
 		dev_err(dev, "not able to register vbus reg %d\n", ret);
@@ -85,13 +158,14 @@ static int qcom_usb_vbus_regulator_probe(struct platform_device *pdev)
 	}
 
 	/* Disable HW logic for VBUS enable */
-	regmap_update_bits(regmap, base + OTG_CFG, OTG_EN_SRC_CFG, 0);
+	regmap_update_bits(regmap, base + data->otg_cfg, data->otg_en_src_cfg, 0);
 
 	return 0;
 }
 
 static const struct of_device_id qcom_usb_vbus_regulator_match[] = {
-	{ .compatible = "qcom,pm8150b-vbus-reg" },
+	{ .compatible = "qcom,pm8150b-vbus-reg", .data = &pm8150b_data },
+	{ .compatible = "qcom,pm4125-vbus-reg",  .data = &pm4125_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, qcom_usb_vbus_regulator_match);
diff --git a/drivers/regulator/rt4803.c b/drivers/regulator/rt4803.c
index c96fb026dc10..34cd3f249ada 100644
--- a/drivers/regulator/rt4803.c
+++ b/drivers/regulator/rt4803.c
@@ -7,7 +7,6 @@
 
 #include <linux/i2c.h>
 #include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
diff --git a/drivers/regulator/rt5739.c b/drivers/regulator/rt5739.c
index 5fcddd7c2da7..00706cba9f9e 100644
--- a/drivers/regulator/rt5739.c
+++ b/drivers/regulator/rt5739.c
@@ -11,7 +11,6 @@
 #include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
diff --git a/drivers/regulator/rt6190-regulator.c b/drivers/regulator/rt6190-regulator.c
index 3883440295ed..f2cd9540038d 100644
--- a/drivers/regulator/rt6190-regulator.c
+++ b/drivers/regulator/rt6190-regulator.c
@@ -12,7 +12,6 @@
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
diff --git a/drivers/regulator/rt8092.c b/drivers/regulator/rt8092.c
index 558bd04a2090..2ea4872ad8e0 100644
--- a/drivers/regulator/rt8092.c
+++ b/drivers/regulator/rt8092.c
@@ -8,7 +8,6 @@
 #include <linux/bits.h>
 #include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
diff --git a/drivers/regulator/rtq2208-regulator.c b/drivers/regulator/rtq2208-regulator.c
index 7fe082def494..b4eb5d3eb5bd 100644
--- a/drivers/regulator/rtq2208-regulator.c
+++ b/drivers/regulator/rtq2208-regulator.c
@@ -9,7 +9,6 @@
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/of_regulator.h>
-#include <linux/mod_devicetable.h>
 
 /* Register */
 #define RTQ2208_REG_FSOUTB_CNTL			0x11
diff --git a/drivers/regulator/tps6287x-regulator.c b/drivers/regulator/tps6287x-regulator.c
index c0bc4a6192c4..e6403398facc 100644
--- a/drivers/regulator/tps6287x-regulator.c
+++ b/drivers/regulator/tps6287x-regulator.c
@@ -8,7 +8,6 @@
 
 #include <linux/err.h>
 #include <linux/i2c.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/regulator/of_regulator.h>
diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
index 8df81ceeb845..00e5c3621fd8 100644
--- a/drivers/regulator/tps65218-regulator.c
+++ b/drivers/regulator/tps65218-regulator.c
@@ -8,7 +8,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/init.h>
diff --git a/drivers/regulator/tps65912-regulator.c b/drivers/regulator/tps65912-regulator.c
index 4317ec62f18f..a73aa3e0d5c5 100644
--- a/drivers/regulator/tps65912-regulator.c
+++ b/drivers/regulator/tps65912-regulator.c
@@ -10,7 +10,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 
diff --git a/drivers/regulator/vexpress-regulator.c b/drivers/regulator/vexpress-regulator.c
index 6687077e9a97..5a2e0143cfdf 100644
--- a/drivers/regulator/vexpress-regulator.c
+++ b/drivers/regulator/vexpress-regulator.c
@@ -8,7 +8,6 @@
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/module.h>
-#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>