[PATCH v2 09/11] regulator: wm831x: remove legacy DVS platform data

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

Now that the only board file in mainline using wm831x buckv DVS has been
converted to use software properties, we can remove the unused legacy
DVS fields from 'struct wm831x_buckv_pdata'. Also remove the fallback
logic from the regulator driver, making DVS support purely
property-based when software nodes are used.

Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/regulator/wm831x-dcdc.c  | 22 ++++++++++------------
 include/linux/mfd/wm831x/pdata.h |  3 ---
 2 files changed, 10 insertions(+), 15 deletions(-)

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index ce43c51c0170..05f49b2f5bad 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -336,15 +336,10 @@ static void wm831x_buckv_dvs_init(struct platform_device *pdev,
 	int dvs_control_src;
 	u32 val;
 
-	if (!pdata)
+	if (!pdata || !pdata->swnode)
 		return;
 
-	if (pdata->swnode) {
-		struct fwnode_handle *fwnode = software_node_fwnode(pdata->swnode);
-
-		if (fwnode)
-			device_set_node(&pdev->dev, fwnode);
-	}
+	device_set_node(&pdev->dev, software_node_fwnode(pdata->swnode));
 
 	/* gpiolib won't let us read the GPIO status so pick the higher
 	 * of the two existing voltages so we take it as platform data.
@@ -352,7 +347,7 @@ static void wm831x_buckv_dvs_init(struct platform_device *pdev,
 	if (device_property_read_u32(&pdev->dev, "wlf,dvs-init-state", &val) == 0)
 		dcdc->dvs_gpio_state = val;
 	else
-		dcdc->dvs_gpio_state = pdata->dvs_init_state;
+		dcdc->dvs_gpio_state = 0;
 
 	dcdc->dvs_gpiod = devm_gpiod_get(&pdev->dev, "dvs",
 			dcdc->dvs_gpio_state ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW);
@@ -362,10 +357,13 @@ static void wm831x_buckv_dvs_init(struct platform_device *pdev,
 		return;
 	}
 
-	if (device_property_read_u32(&pdev->dev, "wlf,dvs-control-src", &val) == 0)
-		dvs_control_src = val;
-	else
-		dvs_control_src = pdata->dvs_control_src;
+	ret = device_property_read_u32(&pdev->dev, "wlf,dvs-control-src", &val);
+	if (ret) {
+		dev_err(wm831x->dev, "Failed to read DVS control source for %s: %d\n",
+			dcdc->name, ret);
+		return;
+	}
+	dvs_control_src = val;
 
 	switch (dvs_control_src) {
 	case 1:
diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h
index d73a04c82ca1..c48333552f5a 100644
--- a/include/linux/mfd/wm831x/pdata.h
+++ b/include/linux/mfd/wm831x/pdata.h
@@ -48,9 +48,6 @@ struct wm831x_battery_pdata {
  * I2C or SPI buses.
  */
 struct wm831x_buckv_pdata {
-	int dvs_control_src; /** Hardware DVS source to use (1 or 2) */
-	int dvs_init_state;  /** DVS state to expect on startup */
-	int dvs_state_gpio;  /** CPU GPIO to use for monitoring status */
 	const struct software_node *swnode; /** Software node for properties */
 };
 

-- 
2.55.0.795.g602f6c329a-goog