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 <media/v4l2-ctrls.h>
15 #include <video/omapfb_dss.h>
16 #include <video/omapvrfb.h>
17 #include <linux/dmaengine.h>
18
19 #define YUYV_BPP 2
20 #define RGB565_BPP 2
21 #define RGB24_BPP 3
22 #define RGB32_BPP 4
23 #define TILE_SIZE 32
24 #define YUYV_VRFB_BPP 2
25 #define RGB_VRFB_BPP 1
26 #define MAX_CID 3
27 #define MAC_VRFB_CTXS 4
28 #define MAX_VOUT_DEV 2
29 #define MAX_OVLS 3
30 #define MAX_DISPLAYS 10
31 #define MAX_MANAGERS 3
32
33 #define QQVGA_WIDTH 160
34 #define QQVGA_HEIGHT 120
35
36 /* Max Resolution supported by the driver */
37 #define VID_MAX_WIDTH 1280 /* Largest width */
38 #define VID_MAX_HEIGHT 720 /* Largest height */
39
40 /* Mimimum requirement is 2x2 for DSS */
41 #define VID_MIN_WIDTH 2
42 #define VID_MIN_HEIGHT 2
43
44 /* 2048 x 2048 is max res supported by OMAP display controller */
45 #define MAX_PIXELS_PER_LINE 2048
46
47 #define VRFB_TX_TIMEOUT 1000
48 #define VRFB_NUM_BUFS 4
49
50 /* Max buffer size tobe allocated during init */
51 #define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
52
53 enum dma_channel_state {
54 DMA_CHAN_NOT_ALLOTED,
55 DMA_CHAN_ALLOTED,
56 };
57
58 /* Enum for Rotation
59 * DSS understands rotation in 0, 1, 2, 3 context
60 * while V4L2 driver understands it as 0, 90, 180, 270
61 */
62 enum dss_rotation {
63 dss_rotation_0_degree = 0,
64 dss_rotation_90_degree = 1,
65 dss_rotation_180_degree = 2,
66 dss_rotation_270_degree = 3,
67 };
68
69 /* Enum for choosing rotation type for vout
70 * DSS2 doesn't understand no rotation as an
71 * option while V4L2 driver doesn't support
72 * rotation in the case where VRFB is not built in
73 * the kernel
74 */
75 enum vout_rotaion_type {
76 VOUT_ROT_NONE = 0,
77 VOUT_ROT_VRFB = 1,
78 };
79
80 /*
81 * This structure is used to store the DMA transfer parameters
82 * for VRFB hidden buffer
83 */
84 struct vid_vrfb_dma {
85 struct dma_chan *chan;
86 struct dma_interleaved_template *xt;
87
88 int req_status;
89 int tx_status;
90 wait_queue_head_t wait;
91 };
92
93 struct omapvideo_info {
94 int id;
95 int num_overlays;
96 struct omap_overlay *overlays[MAX_OVLS];
97 enum vout_rotaion_type rotation_type;
98 };
99
100 struct omap2video_device {
101 struct mutex mtx;
102
103 int state;
104
105 struct v4l2_device v4l2_dev;
106 struct omap_vout_device *vouts[MAX_VOUT_DEV];
107
108 int num_displays;
109 struct omap_dss_device *displays[MAX_DISPLAYS];
110 int num_overlays;
111 struct omap_overlay *overlays[MAX_OVLS];
112 int num_managers;
113 struct omap_overlay_manager *managers[MAX_MANAGERS];
114 };
115
116 /* per-device data structure */
117 struct omap_vout_device {
118
119 struct omapvideo_info vid_info;
120 struct video_device *vfd;
121 struct omap2video_device *vid_dev;
122 struct v4l2_ctrl_handler ctrl_handler;
123 int vid;
124 int opened;
125
126 /* we don't allow to change image fmt/size once buffer has
127 * been allocated
128 */
129 int buffer_allocated;
130 /* allow to reuse previously allocated buffer which is big enough */
131 int buffer_size;
132 /* keep buffer info across opens */
133 unsigned long buf_virt_addr[VIDEO_MAX_FRAME];
134 unsigned long buf_phy_addr[VIDEO_MAX_FRAME];
135 enum omap_color_mode dss_mode;
136
137 /* we don't allow to request new buffer when old buffers are
138 * still mmaped
139 */
140 int mmap_count;
141
142 spinlock_t vbq_lock; /* spinlock for videobuf queues */
143 unsigned long field_count; /* field counter for videobuf_buffer */
144
145 /* non-NULL means streaming is in progress. */
146 bool streaming;
147
148 struct v4l2_pix_format pix;
149 struct v4l2_rect crop;
150 struct v4l2_window win;
151 struct v4l2_framebuffer fbuf;
152
153 /* Lock to protect the shared data structures in ioctl */
154 struct mutex lock;
155
156 enum dss_rotation rotation;
157 bool mirror;
158 int flicker_filter;
159
160 int bpp; /* bytes per pixel */
161 int vrfb_bpp; /* bytes per pixel with respect to VRFB */
162
163 struct vid_vrfb_dma vrfb_dma_tx;
164 unsigned int smsshado_phy_addr[MAC_VRFB_CTXS];
165 unsigned int smsshado_virt_addr[MAC_VRFB_CTXS];
166 struct vrfb vrfb_context[MAC_VRFB_CTXS];
167 bool vrfb_static_allocation;
168 unsigned int smsshado_size;
169 unsigned char pos;
170
171 int ps, vr_ps, line_length, first_int, field_id;
172 enum v4l2_memory memory;
173 struct videobuf_buffer *cur_frm, *next_frm;
174 struct list_head dma_queue;
175 u8 *queued_buf_addr[VIDEO_MAX_FRAME];
176 u32 cropped_offset;
177 s32 tv_field1_offset;
178 void *isr_handle;
179
180 /* Buffer queue variables */
181 struct omap_vout_device *vout;
182 enum v4l2_buf_type type;
183 struct videobuf_queue vbq;
184 int io_allowed;
185
186 };
187
188 /*
189 * Return true if rotation is 90 or 270
190 */
is_rotation_90_or_270(const struct omap_vout_device * vout)191 static inline int is_rotation_90_or_270(const struct omap_vout_device *vout)
192 {
193 return (vout->rotation == dss_rotation_90_degree ||
194 vout->rotation == dss_rotation_270_degree);
195 }
196
197 /*
198 * Return true if rotation is enabled
199 */
is_rotation_enabled(const struct omap_vout_device * vout)200 static inline int is_rotation_enabled(const struct omap_vout_device *vout)
201 {
202 return vout->rotation || vout->mirror;
203 }
204
205 /*
206 * Reverse the rotation degree if mirroring is enabled
207 */
calc_rotation(const struct omap_vout_device * vout)208 static inline int calc_rotation(const struct omap_vout_device *vout)
209 {
210 if (!vout->mirror)
211 return vout->rotation;
212
213 switch (vout->rotation) {
214 case dss_rotation_90_degree:
215 return dss_rotation_270_degree;
216 case dss_rotation_270_degree:
217 return dss_rotation_90_degree;
218 case dss_rotation_180_degree:
219 return dss_rotation_0_degree;
220 default:
221 return dss_rotation_180_degree;
222 }
223 }
224
225 void omap_vout_free_buffers(struct omap_vout_device *vout);
226 #endif /* ifndef OMAP_VOUTDEF_H */
227
