1/*
2 * shmob_drm.h  --  SH Mobile DRM driver
3 *
4 * Copyright (C) 2012 Renesas Corporation
5 *
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#ifndef __SHMOB_DRM_H__
15#define __SHMOB_DRM_H__
16
17#include <linux/kernel.h>
18
19#include <drm/drm_mode.h>
20
21struct sh_mobile_meram_cfg;
22struct sh_mobile_meram_info;
23
24enum shmob_drm_clk_source {
25	SHMOB_DRM_CLK_BUS,
26	SHMOB_DRM_CLK_PERIPHERAL,
27	SHMOB_DRM_CLK_EXTERNAL,
28};
29
30enum shmob_drm_interface {
31	SHMOB_DRM_IFACE_RGB8,		/* 24bpp, 8:8:8 */
32	SHMOB_DRM_IFACE_RGB9,		/* 18bpp, 9:9 */
33	SHMOB_DRM_IFACE_RGB12A,		/* 24bpp, 12:12 */
34	SHMOB_DRM_IFACE_RGB12B,		/* 12bpp */
35	SHMOB_DRM_IFACE_RGB16,		/* 16bpp */
36	SHMOB_DRM_IFACE_RGB18,		/* 18bpp */
37	SHMOB_DRM_IFACE_RGB24,		/* 24bpp */
38	SHMOB_DRM_IFACE_YUV422,		/* 16bpp */
39	SHMOB_DRM_IFACE_SYS8A,		/* 24bpp, 8:8:8 */
40	SHMOB_DRM_IFACE_SYS8B,		/* 18bpp, 8:8:2 */
41	SHMOB_DRM_IFACE_SYS8C,		/* 18bpp, 2:8:8 */
42	SHMOB_DRM_IFACE_SYS8D,		/* 16bpp, 8:8 */
43	SHMOB_DRM_IFACE_SYS9,		/* 18bpp, 9:9 */
44	SHMOB_DRM_IFACE_SYS12,		/* 24bpp, 12:12 */
45	SHMOB_DRM_IFACE_SYS16A,		/* 16bpp */
46	SHMOB_DRM_IFACE_SYS16B,		/* 18bpp, 16:2 */
47	SHMOB_DRM_IFACE_SYS16C,		/* 18bpp, 2:16 */
48	SHMOB_DRM_IFACE_SYS18,		/* 18bpp */
49	SHMOB_DRM_IFACE_SYS24,		/* 24bpp */
50};
51
52struct shmob_drm_backlight_data {
53	const char *name;
54	int max_brightness;
55	int (*get_brightness)(void);
56	int (*set_brightness)(int brightness);
57};
58
59struct shmob_drm_panel_data {
60	unsigned int width_mm;		/* Panel width in mm */
61	unsigned int height_mm;		/* Panel height in mm */
62	struct drm_mode_modeinfo mode;
63};
64
65struct shmob_drm_sys_interface_data {
66	unsigned int read_latch:6;
67	unsigned int read_setup:8;
68	unsigned int read_cycle:8;
69	unsigned int read_strobe:8;
70	unsigned int write_setup:8;
71	unsigned int write_cycle:8;
72	unsigned int write_strobe:8;
73	unsigned int cs_setup:3;
74	unsigned int vsync_active_high:1;
75	unsigned int vsync_dir_input:1;
76};
77
78#define SHMOB_DRM_IFACE_FL_DWPOL (1 << 0) /* Rising edge dot clock data latch */
79#define SHMOB_DRM_IFACE_FL_DIPOL (1 << 1) /* Active low display enable */
80#define SHMOB_DRM_IFACE_FL_DAPOL (1 << 2) /* Active low display data */
81#define SHMOB_DRM_IFACE_FL_HSCNT (1 << 3) /* Disable HSYNC during VBLANK */
82#define SHMOB_DRM_IFACE_FL_DWCNT (1 << 4) /* Disable dotclock during blanking */
83
84struct shmob_drm_interface_data {
85	enum shmob_drm_interface interface;
86	struct shmob_drm_sys_interface_data sys;
87	unsigned int clk_div;
88	unsigned int flags;
89};
90
91struct shmob_drm_platform_data {
92	enum shmob_drm_clk_source clk_source;
93	struct shmob_drm_interface_data iface;
94	struct shmob_drm_panel_data panel;
95	struct shmob_drm_backlight_data backlight;
96	const struct sh_mobile_meram_cfg *meram;
97};
98
99#endif /* __SHMOB_DRM_H__ */
100