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
vb2_to_omap_vout_buffer(struct vb2_buffer * vb)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 u8 *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 */
is_rotation_90_or_270(const struct omap_vout_device * vout)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 */
is_rotation_enabled(const struct omap_vout_device * vout)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 */
calc_rotation(const struct omap_vout_device * vout)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