drm: Renesas SH Mobile DRM driver

The SH Mobile LCD controller (LCDC) DRM driver supports the main
graphics plane in RGB and YUV formats, as well as the overlay planes (in
alpha-blending mode only).

Only flat panel outputs using the parallel interface are supported.
Support for SYS panels, HDMI and DSI is currently not implemented.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 99 insertions, 0 deletions

diff --git a/include/linux/platform_data/shmob_drm.h b/include/linux/platform_data/shmob_drm.h
new file mode 100644
index 000000000000..7c686d335c12
--- /dev/null
+++ b/include/linux/platform_data/shmob_drm.h
@@ -0,0 +1,99 @@
+/*
+ * shmob_drm.h  --  SH Mobile DRM driver
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_H__
+#define __SHMOB_DRM_H__
+
+#include <linux/kernel.h>
+
+#include <drm/drm_mode.h>
+
+struct sh_mobile_meram_cfg;
+struct sh_mobile_meram_info;
+
+enum shmob_drm_clk_source {
+        SHMOB_DRM_CLK_BUS,
+        SHMOB_DRM_CLK_PERIPHERAL,
+        SHMOB_DRM_CLK_EXTERNAL,
+};
+
+enum shmob_drm_interface {
+        SHMOB_DRM_IFACE_RGB8,           /* 24bpp, 8:8:8 */
+        SHMOB_DRM_IFACE_RGB9,           /* 18bpp, 9:9 */
+        SHMOB_DRM_IFACE_RGB12A,         /* 24bpp, 12:12 */
+        SHMOB_DRM_IFACE_RGB12B,         /* 12bpp */
+        SHMOB_DRM_IFACE_RGB16,          /* 16bpp */
+        SHMOB_DRM_IFACE_RGB18,          /* 18bpp */
+        SHMOB_DRM_IFACE_RGB24,          /* 24bpp */
+        SHMOB_DRM_IFACE_YUV422,         /* 16bpp */
+        SHMOB_DRM_IFACE_SYS8A,          /* 24bpp, 8:8:8 */
+        SHMOB_DRM_IFACE_SYS8B,          /* 18bpp, 8:8:2 */
+        SHMOB_DRM_IFACE_SYS8C,          /* 18bpp, 2:8:8 */
+        SHMOB_DRM_IFACE_SYS8D,          /* 16bpp, 8:8 */
+        SHMOB_DRM_IFACE_SYS9,           /* 18bpp, 9:9 */
+        SHMOB_DRM_IFACE_SYS12,          /* 24bpp, 12:12 */
+        SHMOB_DRM_IFACE_SYS16A,         /* 16bpp */
+        SHMOB_DRM_IFACE_SYS16B,         /* 18bpp, 16:2 */
+        SHMOB_DRM_IFACE_SYS16C,         /* 18bpp, 2:16 */
+        SHMOB_DRM_IFACE_SYS18,          /* 18bpp */
+        SHMOB_DRM_IFACE_SYS24,          /* 24bpp */
+};
+
+struct shmob_drm_backlight_data {
+        const char *name;
+        int max_brightness;
+        int (*get_brightness)(void);
+        int (*set_brightness)(int brightness);
+};
+
+struct shmob_drm_panel_data {
+        unsigned int width_mm;          /* Panel width in mm */
+        unsigned int height_mm;         /* Panel height in mm */
+        struct drm_mode_modeinfo mode;
+};
+
+struct shmob_drm_sys_interface_data {
+        unsigned int read_latch:6;
+        unsigned int read_setup:8;
+        unsigned int read_cycle:8;
+        unsigned int read_strobe:8;
+        unsigned int write_setup:8;
+        unsigned int write_cycle:8;
+        unsigned int write_strobe:8;
+        unsigned int cs_setup:3;
+        unsigned int vsync_active_high:1;
+        unsigned int vsync_dir_input:1;
+};
+
+#define SHMOB_DRM_IFACE_FL_DWPOL (1 << 0) /* Rising edge dot clock data latch */
+#define SHMOB_DRM_IFACE_FL_DIPOL (1 << 1) /* Active low display enable */
+#define SHMOB_DRM_IFACE_FL_DAPOL (1 << 2) /* Active low display data */
+#define SHMOB_DRM_IFACE_FL_HSCNT (1 << 3) /* Disable HSYNC during VBLANK */
+#define SHMOB_DRM_IFACE_FL_DWCNT (1 << 4) /* Disable dotclock during blanking */
+
+struct shmob_drm_interface_data {
+        enum shmob_drm_interface interface;
+        struct shmob_drm_sys_interface_data sys;
+        unsigned int clk_div;
+        unsigned int flags;
+};
+
+struct shmob_drm_platform_data {
+        enum shmob_drm_clk_source clk_source;
+        struct shmob_drm_interface_data iface;
+        struct shmob_drm_panel_data panel;
+        struct shmob_drm_backlight_data backlight;
+        const struct sh_mobile_meram_cfg *meram;
+};
+
+#endif /* __SHMOB_DRM_H__ */