drm/panel: Add driver for DJN HX83112B LCD panel

Add support for the 2160x1080 LCD panel from DJN (98-03057-6598B-I)
bundled with a HX83112B driver IC, as found on the Fairphone 3
smartphone.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250611-fp3-display-v4-3-ef67701e7687@lucaweiss.eu

Author: z3ntu

drivers/gpu/drm/panel/Kconfig

@@ -193,6 +193,16 @@ config DRM_PANEL_HIMAX_HX83112A
 	  Say Y here if you want to enable support for Himax HX83112A-based
 	  display panels, such as the one found in the Fairphone 4 smartphone.
 
+config DRM_PANEL_HIMAX_HX83112B
+	tristate "Himax HX83112B-based DSI panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	select DRM_KMS_HELPER
+	help
+	  Say Y here if you want to enable support for Himax HX83112B-based
+	  display panels, such as the one found in the Fairphone 3 smartphone.
+
 config DRM_PANEL_HIMAX_HX8394
 	tristate "HIMAX HX8394 MIPI-DSI LCD panels"
 	depends on OF

drivers/gpu/drm/panel/Makefile

@@ -20,6 +20,7 @@ obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d
 obj-$(CONFIG_DRM_PANEL_HIMAX_HX8279) += panel-himax-hx8279.o
 obj-$(CONFIG_DRM_PANEL_HIMAX_HX83102) += panel-himax-hx83102.o
 obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112A) += panel-himax-hx83112a.o
+obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112B) += panel-himax-hx83112b.o
 obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o