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/videobuf2-dma-contig.h> |
15 | #include <media/v4l2-ctrls.h> |
16 | #include <video/omapfb_dss.h> |
17 | #include <video/omapvrfb.h> |
18 | #include <linux/dmaengine.h> |
19 | |
20 | #define YUYV_BPP 2 |
21 | #define RGB565_BPP 2 |
22 | #define RGB24_BPP 3 |
23 | #define RGB32_BPP 4 |
24 | #define TILE_SIZE 32 |
25 | #define YUYV_VRFB_BPP 2 |
26 | #define RGB_VRFB_BPP 1 |
27 | #define MAX_CID 3 |
28 | #define MAC_VRFB_CTXS 4 |
29 | #define MAX_VOUT_DEV 2 |
30 | #define MAX_OVLS 3 |
31 | #define MAX_DISPLAYS 10 |
32 | #define MAX_MANAGERS 3 |
33 | |
34 | #define QQVGA_WIDTH 160 |
35 | #define QQVGA_HEIGHT 120 |
36 | |
37 | /* Max Resolution supported by the driver */ |
38 | #define VID_MAX_WIDTH 1280 /* Largest width */ |
39 | #define VID_MAX_HEIGHT 720 /* Largest height */ |
40 | |
41 | /* Minimum requirement is 2x2 for DSS */ |
42 | #define VID_MIN_WIDTH 2 |
43 | #define VID_MIN_HEIGHT 2 |
44 | |
45 | /* 2048 x 2048 is max res supported by OMAP display controller */ |
46 | #define MAX_PIXELS_PER_LINE 2048 |
47 | |
48 | #define VRFB_TX_TIMEOUT 1000 |
49 | #define VRFB_NUM_BUFS 4 |
50 | |
51 | /* Max buffer size tobe allocated during init */ |
52 | #define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4) |
53 | |
54 | enum dma_channel_state { |
55 | DMA_CHAN_NOT_ALLOTED, |
56 | DMA_CHAN_ALLOTED, |
57 | }; |
58 | |
59 | /* Enum for Rotation |
60 | * DSS understands rotation in 0, 1, 2, 3 context |
61 | * while V4L2 driver understands it as 0, 90, 180, 270 |
62 | */ |
63 | enum dss_rotation { |
64 | dss_rotation_0_degree = 0, |
65 | dss_rotation_90_degree = 1, |
66 | dss_rotation_180_degree = 2, |
67 | dss_rotation_270_degree = 3, |
68 | }; |
69 | |
70 | /* Enum for choosing rotation type for vout |
71 | * DSS2 doesn't understand no rotation as an |
72 | * option while V4L2 driver doesn't support |
73 | * rotation in the case where VRFB is not built in |
74 | * the kernel |
75 | */ |
76 | enum vout_rotaion_type { |
77 | VOUT_ROT_NONE = 0, |
78 | VOUT_ROT_VRFB = 1, |
79 | }; |
80 | |
81 | /* |
82 | * This structure is used to store the DMA transfer parameters |
83 | * for VRFB hidden buffer |
84 | */ |
85 | struct vid_vrfb_dma { |
86 | struct dma_chan *chan; |
87 | struct dma_interleaved_template *xt; |
88 | |
89 | int req_status; |
90 | int tx_status; |
91 | wait_queue_head_t wait; |
92 | }; |
93 | |
94 | struct omapvideo_info { |
95 | int id; |
96 | int num_overlays; |
97 | struct omap_overlay *overlays[MAX_OVLS]; |
98 | enum vout_rotaion_type rotation_type; |
99 | }; |
100 | |
101 | struct omap2video_device { |
102 | struct mutex mtx; |
103 | |
104 | int state; |
105 | |
106 | struct v4l2_device v4l2_dev; |
107 | struct omap_vout_device *vouts[MAX_VOUT_DEV]; |
108 | |
109 | int num_displays; |
110 | struct omap_dss_device *displays[MAX_DISPLAYS]; |
111 | int num_overlays; |
112 | struct omap_overlay *overlays[MAX_OVLS]; |
113 | int num_managers; |
114 | struct omap_overlay_manager *managers[MAX_MANAGERS]; |
115 | }; |
116 | |
117 | /* buffer for one video frame */ |
118 | struct omap_vout_buffer { |
119 | /* common v4l buffer stuff -- must be first */ |
120 | struct vb2_v4l2_buffer vbuf; |
121 | struct list_head queue; |
122 | }; |
123 | |
124 | static inline struct omap_vout_buffer *vb2_to_omap_vout_buffer(struct vb2_buffer *vb) |
125 | { |
126 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
127 | |
128 | return container_of(vbuf, struct omap_vout_buffer, vbuf); |
129 | } |
130 | |
131 | /* per-device data structure */ |
132 | struct omap_vout_device { |
133 | |
134 | struct omapvideo_info vid_info; |
135 | struct video_device *vfd; |
136 | struct omap2video_device *vid_dev; |
137 | struct v4l2_ctrl_handler ctrl_handler; |
138 | int vid; |
139 | |
140 | /* allow to reuse previously allocated buffer which is big enough */ |
141 | int buffer_size; |
142 | enum omap_color_mode dss_mode; |
143 | |
144 | u32 sequence; |
145 | |
146 | struct v4l2_pix_format pix; |
147 | struct v4l2_rect crop; |
148 | struct v4l2_window win; |
149 | struct v4l2_framebuffer fbuf; |
150 | |
151 | /* Lock to protect the shared data structures in ioctl */ |
152 | struct mutex lock; |
153 | |
154 | enum dss_rotation rotation; |
155 | bool mirror; |
156 | int flicker_filter; |
157 | |
158 | int bpp; /* bytes per pixel */ |
159 | int vrfb_bpp; /* bytes per pixel with respect to VRFB */ |
160 | |
161 | struct vid_vrfb_dma vrfb_dma_tx; |
162 | unsigned int smsshado_phy_addr[MAC_VRFB_CTXS]; |
163 | unsigned int smsshado_virt_addr[MAC_VRFB_CTXS]; |
164 | struct vrfb vrfb_context[MAC_VRFB_CTXS]; |
165 | bool vrfb_static_allocation; |
166 | unsigned int smsshado_size; |
167 | unsigned char pos; |
168 | |
169 | int ps, vr_ps, line_length, first_int, field_id; |
170 | struct omap_vout_buffer *cur_frm, *next_frm; |
171 | spinlock_t vbq_lock; /* spinlock for dma_queue */ |
172 | struct list_head dma_queue; |
173 | dma_addr_t queued_buf_addr[VIDEO_MAX_FRAME]; |
174 | u32 cropped_offset; |
175 | s32 tv_field1_offset; |
176 | void *isr_handle; |
177 | struct vb2_queue vq; |
178 | |
179 | }; |
180 | |
181 | /* |
182 | * Return true if rotation is 90 or 270 |
183 | */ |
184 | static inline int is_rotation_90_or_270(const struct omap_vout_device *vout) |
185 | { |
186 | return (vout->rotation == dss_rotation_90_degree || |
187 | vout->rotation == dss_rotation_270_degree); |
188 | } |
189 | |
190 | /* |
191 | * Return true if rotation is enabled |
192 | */ |
193 | static inline int is_rotation_enabled(const struct omap_vout_device *vout) |
194 | { |
195 | return vout->rotation || vout->mirror; |
196 | } |
197 | |
198 | /* |
199 | * Reverse the rotation degree if mirroring is enabled |
200 | */ |
201 | static inline int calc_rotation(const struct omap_vout_device *vout) |
202 | { |
203 | if (!vout->mirror) |
204 | return vout->rotation; |
205 | |
206 | switch (vout->rotation) { |
207 | case dss_rotation_90_degree: |
208 | return dss_rotation_270_degree; |
209 | case dss_rotation_270_degree: |
210 | return dss_rotation_90_degree; |
211 | case dss_rotation_180_degree: |
212 | return dss_rotation_0_degree; |
213 | default: |
214 | return dss_rotation_180_degree; |
215 | } |
216 | } |
217 | |
218 | void omap_vout_free_buffers(struct omap_vout_device *vout); |
219 | #endif /* ifndef OMAP_VOUTDEF_H */ |
220 | |