[PATCH 1/4] drm: Add helper module for working with pixel data

[Thomas Zimmermann <tzimmermann@suse.de>]

Add drm_pixel_helper.ko. This module will contain helpers that copy
and process pixel data, such as framebuffers. Drivers that want to
use the helpers should select DRM_PIXEL_HELPER.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/Kconfig                   | 6 ++++++
 drivers/gpu/drm/Makefile                  | 4 ++++
 drivers/gpu/drm/drm_pixel_helper_common.c | 6 ++++++
 3 files changed, 16 insertions(+)
 create mode 100644 drivers/gpu/drm/drm_pixel_helper_common.c

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 61111d50b1c6..dce5e25671ee 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -49,6 +49,12 @@ config DRM_KMS_HELPER
 	help
 	  CRTC helpers for KMS drivers.
 
+config DRM_PIXEL_HELPER
+	tristate
+	depends on DRM
+	help
+	  Helpers for working with pixel data in DRM.
+
 config DRM_DRAW
 	bool
 	depends on DRM
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 2c6bc093a923..5f555a2c1a4c 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -99,6 +99,10 @@ obj-$(CONFIG_DRM_PANEL) += drm_panel.o
 obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
 obj-$(CONFIG_DRM_PANEL_BACKLIGHT_QUIRKS) += drm_panel_backlight_quirks.o
 
+drm_pixel_helper-y := \
+	drm_pixel_helper_common.o
+obj-$(CONFIG_DRM_PIXEL_HELPER) += drm_pixel_helper.o
+
 #
 # Memory-management helpers
 #
diff --git a/drivers/gpu/drm/drm_pixel_helper_common.c b/drivers/gpu/drm/drm_pixel_helper_common.c
new file mode 100644
index 000000000000..743846e1e003
--- /dev/null
+++ b/drivers/gpu/drm/drm_pixel_helper_common.c
@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0 or MIT
+
+#include <linux/module.h>
+
+MODULE_DESCRIPTION("DRM pixel-data helpers");
+MODULE_LICENSE("GPL and additional rights");
-- 
2.56.0