Add support for rm69299 Visionox panel driver and add devicetree bindings for visionox panel

Adding support for visionox rm69299 panel driver and adding bindings for the same panel.
https://patchwork.kernel.org/patch/11461943/ has already been added to drm-misc-next.

Harigovindan P (2):
drm/panel: add support for rm69299 visionox panel driver
dt-bindings: documenting compatible string vendor "visionox"

 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 drivers/gpu/drm/panel/Kconfig                 |   8 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 .../gpu/drm/panel/panel-visionox-rm69299.c    | 304 ++++++++++++++++++
 4 files changed, 315 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-visionox-rm69299.c

2.25.1

Add support for Visionox panel driver.

---

Changes in v2:
- Dropping redundant space in Kconfig(Sam Ravnborg).
- Changing structure for include files(Sam Ravnborg).
- Removing backlight related code and functions(Sam Ravnborg).
- Removing repeated printing of error message(Sam Ravnborg).
- Adding drm_connector as an argument for get_modes function.
Changes in v3:
- Adding arguments for drm_panel_init to support against mainline.
Changes in v4:
- Removing error messages from regulator_set_load.
- Removing dev struct entry.
- Removing checks.
- Dropping empty comment lines.
Changes in v5:
- Removing unused struct member variables.
- Removing blank lines.
- Fixed indentation.
- Invoking dsi_detach and panel_remove while early exiting from probe.
Changes in v6:
- Changed "35597" to "rm69299" for power_on function.
- Removing rm69299_config since it supports single type of panel for now.
- Fixed alignment.
- Using goto statements when regulator_set_load fails.
Changes in v7:
- Added new goto statement when regulator_set_load fails.
Changes in v8,v9,v10:
- Had changes in first patch, did not make any change in panel driver.
Changes in v11:
- Fixing checkpatch script errors.
- Updated assignment of panel.dev property in probe.

 drivers/gpu/drm/panel/Kconfig                 |   8 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 .../gpu/drm/panel/panel-visionox-rm69299.c    | 304 ++++++++++++++++++
 3 files changed, 313 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-visionox-rm69299.c

index d56258b9fcaf..4b6131f5893d 100644
@@ -444,6 +444,14 @@ config DRM_PANEL_TRULY_NT35597_WQXGA
 	  Say Y here if you want to enable support for Truly NT35597 WQXGA Dual DSI
 	  Video Mode panel
 
+config DRM_PANEL_VISIONOX_RM69299
+	tristate "Visionox RM69299"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	help
+	  Say Y here if you want to enable support for Visionox
+	  RM69299  DSI Video Mode panel.
+
 config DRM_PANEL_XINPENG_XPP055C272
 	tristate "Xinpeng XPP055C272 panel driver"
 	depends on OF

index 2335a1e32ae0..8eac3e6fa82c 100644
@@ -47,4 +47,5 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
 obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
 obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
 obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
+obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
 obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o

2.25.1

Documenting compatible string vendor "visionox" in vendor-prefix yaml file.

---
Changes in v11:
- Added visionox compatible string in vendor-prefixes.yaml
- Added as a part of checkpatch script error for panel driver.

 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

index 66a7382add95..b2b8de90b87a 100644
@@ -1047,6 +1047,8 @@ patternProperties:
     description: Tronsmart
   "^truly,.*":
     description: Truly Semiconductors Limited
+  "visionox,.*":
+    description: Visionox
   "^tsd,.*":
     description: Theobroma Systems Design und Consulting GmbH
   "^tyan,.*":

2.25.1