media: i2c: ov4689: Remove i2c_client from ov4689 struct

The 'client' field within the 'ov4689' structure is solely used to
access its 'dev' member. This commit removes the 'client' field and
directly stores a pointer to the 'struct device'.
Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/i2c/ov4689.c

@@ -74,7 +74,7 @@ struct ov4689_mode {
 };
 
 struct ov4689 {
-	struct i2c_client *client;
+	struct device *dev;
 	struct regmap *regmap;
 	struct clk *xvclk;
 	struct gpio_desc *reset_gpio;
@@ -405,13 +405,13 @@ static int ov4689_get_selection(struct v4l2_subdev *sd,
 static int ov4689_s_stream(struct v4l2_subdev *sd, int on)
 {
 	struct ov4689 *ov4689 = to_ov4689(sd);
-	struct i2c_client *client = ov4689->client;
+	struct device *dev = ov4689->dev;
 	int ret = 0;
 
 	mutex_lock(&ov4689->mutex);
 
 	if (on) {
-		ret = pm_runtime_resume_and_get(&client->dev);
+		ret = pm_runtime_resume_and_get(dev);
 		if (ret < 0)
 			goto unlock_and_return;
 
@@ -420,26 +420,26 @@ static int ov4689_s_stream(struct v4l2_subdev *sd, int on)
 					  ov4689->cur_mode->num_regs,
 					  NULL);
 		if (ret) {
-			pm_runtime_put(&client->dev);
+			pm_runtime_put(dev);
 			goto unlock_and_return;
 		}
 
 		ret = __v4l2_ctrl_handler_setup(&ov4689->ctrl_handler);
 		if (ret) {
-			pm_runtime_put(&client->dev);
+			pm_runtime_put(dev);
 			goto unlock_and_return;
 		}
 
 		ret = cci_write(ov4689->regmap, OV4689_REG_CTRL_MODE,
 				OV4689_MODE_STREAMING, NULL);
 		if (ret) {
-			pm_runtime_put(&client->dev);
+			pm_runtime_put(dev);
 			goto unlock_and_return;
 		}
 	} else {
 		cci_write(ov4689->regmap, OV4689_REG_CTRL_MODE,
 			  OV4689_MODE_SW_STANDBY, NULL);
-		pm_runtime_put(&client->dev);
+		pm_runtime_put(dev);
 	}
 
 unlock_and_return:
@@ -553,7 +553,6 @@ static const struct v4l2_subdev_ops ov4689_subdev_ops = {
  */
 static int ov4689_map_gain(struct ov4689 *ov4689, int logical_gain, int *result)
 {
-	const struct device *dev = &ov4689->client->dev;
 	const struct ov4689_gain_range *range;
 	unsigned int n;
 
@@ -564,7 +563,8 @@ static int ov4689_map_gain(struct ov4689 *ov4689, int logical_gain, int *result)
 	}
 
 	if (n == ARRAY_SIZE(ov4689_gain_ranges)) {
-		dev_warn_ratelimited(dev, "no mapping found for gain %d\n",
+		dev_warn_ratelimited(ov4689->dev,
+				     "no mapping found for gain %d\n",
 				     logical_gain);
 		return -EINVAL;
 	}
@@ -580,7 +580,7 @@ static int ov4689_set_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct ov4689 *ov4689 =
 		container_of(ctrl->handler, struct ov4689, ctrl_handler);
-	struct i2c_client *client = ov4689->client;
+	struct device *dev = ov4689->dev;
 	int sensor_gain = 0;
 	s64 max_expo;
 	int ret;
@@ -597,7 +597,7 @@ static int ov4689_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	}
 
-	if (!pm_runtime_get_if_in_use(&client->dev))
+	if (!pm_runtime_get_if_in_use(dev))
 		return 0;
 
 	switch (ctrl->id) {
@@ -618,13 +618,13 @@ static int ov4689_set_ctrl(struct v4l2_ctrl *ctrl)
 		ret = ov4689_enable_test_pattern(ov4689, ctrl->val);
 		break;
 	default:
-		dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
+		dev_warn(dev, "%s Unhandled id:0x%x, val:0x%x\n",
 			 __func__, ctrl->id, ctrl->val);
 		ret = -EINVAL;
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	pm_runtime_put(dev);
 
 	return ret;
 }
@@ -689,8 +689,7 @@ static int ov4689_initialize_controls(struct ov4689 *ov4689)
 
 	if (handler->error) {
 		ret = handler->error;
-		dev_err(&ov4689->client->dev, "Failed to init controls(%d)\n",
-			ret);
+		dev_err(ov4689->dev, "Failed to init controls(%d)\n", ret);
 		goto err_free_handler;
 	}
 
@@ -716,7 +715,7 @@ static int ov4689_initialize_controls(struct ov4689 *ov4689)
 static int ov4689_check_sensor_id(struct ov4689 *ov4689,
 				  struct i2c_client *client)
 {
-	struct device *dev = &ov4689->client->dev;
+	struct device *dev = ov4689->dev;
 	u64 id = 0;
 	int ret;
 
@@ -744,7 +743,7 @@ static int ov4689_configure_regulators(struct ov4689 *ov4689)
 	for (i = 0; i < ARRAY_SIZE(ov4689_supply_names); i++)
 		ov4689->supplies[i].supply = ov4689_supply_names[i];
 
-	return devm_regulator_bulk_get(&ov4689->client->dev,
+	return devm_regulator_bulk_get(ov4689->dev,
 				       ARRAY_SIZE(ov4689_supply_names),
 				       ov4689->supplies);
 }
@@ -813,7 +812,8 @@ static int ov4689_probe(struct i2c_client *client)
 	if (!ov4689)
 		return -ENOMEM;
 
-	ov4689->client = client;
+	ov4689->dev = dev;
+
 	ov4689->cur_mode = &supported_modes[OV4689_MODE_2688_1520];
 
 	ov4689->xvclk = devm_clk_get_optional(dev, NULL);