drm/bridge: analogix_dp: remove unused platform power_on_end callback

This isn't used, but gives the impression of the power on and power off
platform calls being non-symmetrical. Remove the unused callback and
rename the power_on_start to simply power_on.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240619182200.3752465-1-l.stach@pengutronix.de

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c

@@ -1257,8 +1257,8 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
 		goto out_dp_clk_pre;
 	}
 
-	if (dp->plat_data->power_on_start)
-		dp->plat_data->power_on_start(dp->plat_data);
+	if (dp->plat_data->power_on)
+		dp->plat_data->power_on(dp->plat_data);
 
 	phy_power_on(dp->phy);
 
@@ -1283,9 +1283,6 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
 		goto out_dp_init;
 	}
 
-	if (dp->plat_data->power_on_end)
-		dp->plat_data->power_on_end(dp->plat_data);
-
 	enable_irq(dp->irq);
 	return 0;
 

drivers/gpu/drm/exynos/exynos_dp.c

@@ -233,7 +233,7 @@ static int exynos_dp_probe(struct platform_device *pdev)
 	/* The remote port can be either a panel or a bridge */
 	dp->plat_data.panel = panel;
 	dp->plat_data.dev_type = EXYNOS_DP;
-	dp->plat_data.power_on_start = exynos_dp_poweron;
+	dp->plat_data.power_on = exynos_dp_poweron;
 	dp->plat_data.power_off = exynos_dp_poweroff;
 	dp->plat_data.attach = exynos_dp_bridge_attach;
 	dp->plat_data.get_modes = exynos_dp_get_modes;

drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

@@ -92,7 +92,7 @@ static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
 	return 0;
 }
 
-static int rockchip_dp_poweron_start(struct analogix_dp_plat_data *plat_data)
+static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data)
 {
 	struct rockchip_dp_device *dp = pdata_encoder_to_dp(plat_data);
 	int ret;
@@ -397,7 +397,7 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 	dp->data = dp_data;
 	dp->plat_data.panel = panel;
 	dp->plat_data.dev_type = dp->data->chip_type;
-	dp->plat_data.power_on_start = rockchip_dp_poweron_start;
+	dp->plat_data.power_on = rockchip_dp_poweron;
 	dp->plat_data.power_off = rockchip_dp_powerdown;
 	dp->plat_data.get_modes = rockchip_dp_get_modes;
 

include/drm/bridge/analogix_dp.h

@@ -29,8 +29,7 @@ struct analogix_dp_plat_data {
 	struct drm_connector *connector;
 	bool skip_connector;
 
-	int (*power_on_start)(struct analogix_dp_plat_data *);
-	int (*power_on_end)(struct analogix_dp_plat_data *);
+	int (*power_on)(struct analogix_dp_plat_data *);
 	int (*power_off)(struct analogix_dp_plat_data *);
 	int (*attach)(struct analogix_dp_plat_data *, struct drm_bridge *,
 		      struct drm_connector *);