1/*
2 * omap_voutdef.h
3 *
4 * Copyright (C) 2010 Texas Instruments.
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 */
10
11#ifndef OMAP_VOUTDEF_H
12#define OMAP_VOUTDEF_H
13
14#include <video/omapdss.h>
15#include <video/omapvrfb.h>
16
17#define YUYV_BPP        2
18#define RGB565_BPP      2
19#define RGB24_BPP       3
20#define RGB32_BPP       4
21#define TILE_SIZE       32
22#define YUYV_VRFB_BPP   2
23#define RGB_VRFB_BPP    1
24#define MAX_CID		3
25#define MAC_VRFB_CTXS	4
26#define MAX_VOUT_DEV	2
27#define MAX_OVLS	3
28#define MAX_DISPLAYS	10
29#define MAX_MANAGERS	3
30
31#define QQVGA_WIDTH		160
32#define QQVGA_HEIGHT		120
33
34/* Max Resolution supported by the driver */
35#define VID_MAX_WIDTH		1280	/* Largest width */
36#define VID_MAX_HEIGHT		720	/* Largest height */
37
38/* Mimimum requirement is 2x2 for DSS */
39#define VID_MIN_WIDTH		2
40#define VID_MIN_HEIGHT		2
41
42/* 2048 x 2048 is max res supported by OMAP display controller */
43#define MAX_PIXELS_PER_LINE     2048
44
45#define VRFB_TX_TIMEOUT         1000
46#define VRFB_NUM_BUFS		4
47
48/* Max buffer size tobe allocated during init */
49#define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
50
51enum dma_channel_state {
52	DMA_CHAN_NOT_ALLOTED,
53	DMA_CHAN_ALLOTED,
54};
55
56/* Enum for Rotation
57 * DSS understands rotation in 0, 1, 2, 3 context
58 * while V4L2 driver understands it as 0, 90, 180, 270
59 */
60enum dss_rotation {
61	dss_rotation_0_degree	= 0,
62	dss_rotation_90_degree	= 1,
63	dss_rotation_180_degree	= 2,
64	dss_rotation_270_degree = 3,
65};
66
67/* Enum for choosing rotation type for vout
68 * DSS2 doesn't understand no rotation as an
69 * option while V4L2 driver doesn't support
70 * rotation in the case where VRFB is not built in
71 * the kernel
72 */
73enum vout_rotaion_type {
74	VOUT_ROT_NONE	= 0,
75	VOUT_ROT_VRFB	= 1,
76};
77
78/*
79 * This structure is used to store the DMA transfer parameters
80 * for VRFB hidden buffer
81 */
82struct vid_vrfb_dma {
83	int dev_id;
84	int dma_ch;
85	int req_status;
86	int tx_status;
87	wait_queue_head_t wait;
88};
89
90struct omapvideo_info {
91	int id;
92	int num_overlays;
93	struct omap_overlay *overlays[MAX_OVLS];
94	enum vout_rotaion_type rotation_type;
95};
96
97struct omap2video_device {
98	struct mutex  mtx;
99
100	int state;
101
102	struct v4l2_device v4l2_dev;
103	struct omap_vout_device *vouts[MAX_VOUT_DEV];
104
105	int num_displays;
106	struct omap_dss_device *displays[MAX_DISPLAYS];
107	int num_overlays;
108	struct omap_overlay *overlays[MAX_OVLS];
109	int num_managers;
110	struct omap_overlay_manager *managers[MAX_MANAGERS];
111};
112
113/* per-device data structure */
114struct omap_vout_device {
115
116	struct omapvideo_info vid_info;
117	struct video_device *vfd;
118	struct omap2video_device *vid_dev;
119	int vid;
120	int opened;
121
122	/* we don't allow to change image fmt/size once buffer has
123	 * been allocated
124	 */
125	int buffer_allocated;
126	/* allow to reuse previously allocated buffer which is big enough */
127	int buffer_size;
128	/* keep buffer info across opens */
129	unsigned long buf_virt_addr[VIDEO_MAX_FRAME];
130	unsigned long buf_phy_addr[VIDEO_MAX_FRAME];
131	enum omap_color_mode dss_mode;
132
133	/* we don't allow to request new buffer when old buffers are
134	 * still mmaped
135	 */
136	int mmap_count;
137
138	spinlock_t vbq_lock;		/* spinlock for videobuf queues */
139	unsigned long field_count;	/* field counter for videobuf_buffer */
140
141	/* non-NULL means streaming is in progress. */
142	bool streaming;
143
144	struct v4l2_pix_format pix;
145	struct v4l2_rect crop;
146	struct v4l2_window win;
147	struct v4l2_framebuffer fbuf;
148
149	/* Lock to protect the shared data structures in ioctl */
150	struct mutex lock;
151
152	/* V4L2 control structure for different control id */
153	struct v4l2_control control[MAX_CID];
154	enum dss_rotation rotation;
155	bool mirror;
156	int flicker_filter;
157	/* V4L2 control structure for different control id */
158
159	int bpp; /* bytes per pixel */
160	int vrfb_bpp; /* bytes per pixel with respect to VRFB */
161
162	struct vid_vrfb_dma vrfb_dma_tx;
163	unsigned int smsshado_phy_addr[MAC_VRFB_CTXS];
164	unsigned int smsshado_virt_addr[MAC_VRFB_CTXS];
165	struct vrfb vrfb_context[MAC_VRFB_CTXS];
166	bool vrfb_static_allocation;
167	unsigned int smsshado_size;
168	unsigned char pos;
169
170	int ps, vr_ps, line_length, first_int, field_id;
171	enum v4l2_memory memory;
172	struct videobuf_buffer *cur_frm, *next_frm;
173	struct list_head dma_queue;
174	u8 *queued_buf_addr[VIDEO_MAX_FRAME];
175	u32 cropped_offset;
176	s32 tv_field1_offset;
177	void *isr_handle;
178
179	/* Buffer queue variables */
180	struct omap_vout_device *vout;
181	enum v4l2_buf_type type;
182	struct videobuf_queue vbq;
183	int io_allowed;
184
185};
186
187/*
188 * Return true if rotation is 90 or 270
189 */
190static inline int is_rotation_90_or_270(const struct omap_vout_device *vout)
191{
192	return (vout->rotation == dss_rotation_90_degree ||
193			vout->rotation == dss_rotation_270_degree);
194}
195
196/*
197 * Return true if rotation is enabled
198 */
199static inline int is_rotation_enabled(const struct omap_vout_device *vout)
200{
201	return vout->rotation || vout->mirror;
202}
203
204/*
205 * Reverse the rotation degree if mirroring is enabled
206 */
207static inline int calc_rotation(const struct omap_vout_device *vout)
208{
209	if (!vout->mirror)
210		return vout->rotation;
211
212	switch (vout->rotation) {
213	case dss_rotation_90_degree:
214		return dss_rotation_270_degree;
215	case dss_rotation_270_degree:
216		return dss_rotation_90_degree;
217	case dss_rotation_180_degree:
218		return dss_rotation_0_degree;
219	default:
220		return dss_rotation_180_degree;
221	}
222}
223
224void omap_vout_free_buffers(struct omap_vout_device *vout);
225#endif	/* ifndef OMAP_VOUTDEF_H */
226