drm/panel: himax-hx83121a: pass the panel pointer when creating BL

As backlight powering on/off support will be added, more fields of the
panel context will be accessed in the backlight update function.

Pass the whole panel struct instead of the DSI device when creating the
backlight device.

Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260608162622.403713-2-zhengxingda@iscas.ac.cn

diff --git a/drivers/gpu/drm/panel/panel-himax-hx83121a.c b/drivers/gpu/drm/panel/panel-himax-hx83121a.c
index bed79aa06f46a63cfcdfa7dd32e0ff8259a095af..1a7e0125bced8dd2887d7ab10ec2a608b4b98a24 100644 (file)
--- a/drivers/gpu/drm/panel/panel-himax-hx83121a.c
+++ b/drivers/gpu/drm/panel/panel-himax-hx83121a.c
@@ -193,10 +193,11 @@ static const struct drm_panel_funcs himax_panel_funcs = {
 
 static int himax_bl_update_status(struct backlight_device *bl)
 {
-       struct mipi_dsi_device *dsi = bl_get_data(bl);
+       struct himax *ctx = bl_get_data(bl);
        u16 brightness = backlight_get_brightness(bl);
        /* TODO: brightness to raw map table */
-       return mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
+       return mipi_dsi_dcs_set_display_brightness_large(to_primary_dsi(ctx),
+                                                        brightness);
 }
 
 static const struct backlight_ops himax_bl_ops = {
@@ -205,9 +206,9 @@ static const struct backlight_ops himax_bl_ops = {
 };
 
 static struct backlight_device *
-himax_create_backlight(struct mipi_dsi_device *dsi)
+himax_create_backlight(struct himax *ctx)
 {
-       struct device *dev = &dsi->dev;
+       struct device *dev = &to_primary_dsi(ctx)->dev;
        const struct backlight_properties props = {
                .type = BACKLIGHT_RAW,
                .brightness = 512,
@@ -215,7 +216,7 @@ himax_create_backlight(struct mipi_dsi_device *dsi)
                .scale = BACKLIGHT_SCALE_NON_LINEAR,
        };
 
-       return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+       return devm_backlight_device_register(dev, dev_name(dev), dev, ctx,
                                              &himax_bl_ops, &props);
 }
 
@@ -646,7 +647,7 @@ static int himax_probe(struct mipi_dsi_device *dsi)
        ctx->panel.prepare_prev_first = true;
 
        if (desc->has_dcs_backlight) {
-               ctx->backlight = himax_create_backlight(to_primary_dsi(ctx));
+               ctx->backlight = himax_create_backlight(ctx);
                if (IS_ERR(ctx->backlight))
                        return dev_err_probe(dev, PTR_ERR(ctx->backlight),
                                             "Failed to create backlight\n");