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-rw-r--r--drivers/media/video/planb.h231
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diff --git a/drivers/media/video/planb.h b/drivers/media/video/planb.h
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1/*
2 planb - PlanB frame grabber driver
3
4 PlanB is used in the 7x00/8x00 series of PowerMacintosh
5 Computers as video input DMA controller.
6
7 Copyright (C) 1998 Michel Lanners (mlan@cpu.lu)
8
9 Based largely on the bttv driver by Ralph Metzler (rjkm@thp.uni-koeln.de)
10
11 Additional debugging and coding by Takashi Oe (toe@unlserve.unl.edu)
12
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27*/
28
29/* $Id: planb.h,v 1.13 1999/05/03 19:28:56 mlan Exp $ */
30
31#ifndef _PLANB_H_
32#define _PLANB_H_
33
34#ifdef __KERNEL__
35#include <asm/dbdma.h>
36#include "saa7196.h"
37#endif /* __KERNEL__ */
38
39#define PLANB_DEVICE_NAME "Apple PlanB Video-In"
40#define PLANB_REV "1.0"
41
42#ifdef __KERNEL__
43//#define PLANB_GSCANLINE /* use this if apps have the notion of */
44 /* grab buffer scanline */
45/* This should be safe for both PAL and NTSC */
46#define PLANB_MAXPIXELS 768
47#define PLANB_MAXLINES 576
48#define PLANB_NTSC_MAXLINES 480
49
50/* Uncomment your preferred norm ;-) */
51#define PLANB_DEF_NORM VIDEO_MODE_PAL
52//#define PLANB_DEF_NORM VIDEO_MODE_NTSC
53//#define PLANB_DEF_NORM VIDEO_MODE_SECAM
54
55/* fields settings */
56#define PLANB_GRAY 0x1 /* 8-bit mono? */
57#define PLANB_COLOUR15 0x2 /* 16-bit mode */
58#define PLANB_COLOUR32 0x4 /* 32-bit mode */
59#define PLANB_CLIPMASK 0x8 /* hardware clipmasking */
60
61/* misc. flags for PlanB DMA operation */
62#define CH_SYNC 0x1 /* synchronize channels (set by ch1;
63 cleared by ch2) */
64#define FIELD_SYNC 0x2 /* used for the start of each field
65 (0 -> 1 -> 0 for ch1; 0 -> 1 for ch2) */
66#define EVEN_FIELD 0x0 /* even field is detected if unset */
67#define DMA_ABORT 0x2 /* error or just out of sync if set */
68#define ODD_FIELD 0x4 /* odd field is detected if set */
69
70/* for capture operations */
71#define MAX_GBUFFERS 2
72/* note PLANB_MAX_FBUF must be divisible by PAGE_SIZE */
73#ifdef PLANB_GSCANLINE
74#define PLANB_MAX_FBUF 0x240000 /* 576 * 1024 * 4 */
75#define TAB_FACTOR (1)
76#else
77#define PLANB_MAX_FBUF 0x1b0000 /* 576 * 768 * 4 */
78#define TAB_FACTOR (2)
79#endif
80#endif /* __KERNEL__ */
81
82struct planb_saa_regs {
83 unsigned char addr;
84 unsigned char val;
85};
86
87struct planb_stat_regs {
88 unsigned int ch1_stat;
89 unsigned int ch2_stat;
90 unsigned char saa_stat0;
91 unsigned char saa_stat1;
92};
93
94struct planb_any_regs {
95 unsigned int offset;
96 unsigned int bytes;
97 unsigned char data[128];
98};
99
100/* planb private ioctls */
101#define PLANBIOCGSAAREGS _IOWR('v', BASE_VIDIOCPRIVATE, struct planb_saa_regs) /* Read a saa7196 reg value */
102#define PLANBIOCSSAAREGS _IOW('v', BASE_VIDIOCPRIVATE + 1, struct planb_saa_regs) /* Set a saa7196 reg value */
103#define PLANBIOCGSTAT _IOR('v', BASE_VIDIOCPRIVATE + 2, struct planb_stat_regs) /* Read planb status */
104#define PLANB_TV_MODE 1
105#define PLANB_VTR_MODE 2
106#define PLANBIOCGMODE _IOR('v', BASE_VIDIOCPRIVATE + 3, int) /* Get TV/VTR mode */
107#define PLANBIOCSMODE _IOW('v', BASE_VIDIOCPRIVATE + 4, int) /* Set TV/VTR mode */
108
109#ifdef PLANB_GSCANLINE
110#define PLANBG_GRAB_BPL _IOR('v', BASE_VIDIOCPRIVATE + 5, int) /* # of bytes per scanline in grab buffer */
111#endif
112
113/* call wake_up_interruptible() with appropriate actions */
114#define PLANB_INTR_DEBUG _IOW('v', BASE_VIDIOCPRIVATE + 20, int)
115/* investigate which reg does what */
116#define PLANB_INV_REGS _IOWR('v', BASE_VIDIOCPRIVATE + 21, struct planb_any_regs)
117
118#ifdef __KERNEL__
119
120/* Potentially useful macros */
121#define PLANB_SET(x) ((x) << 16 | (x))
122#define PLANB_CLR(x) ((x) << 16)
123
124/* This represents the physical register layout */
125struct planb_registers {
126 volatile struct dbdma_regs ch1; /* 0x00: video in */
127 volatile unsigned int even; /* 0x40: even field setting */
128 volatile unsigned int odd; /* 0x44; odd field setting */
129 unsigned int pad1[14]; /* empty? */
130 volatile struct dbdma_regs ch2; /* 0x80: clipmask out */
131 unsigned int pad2[16]; /* 0xc0: empty? */
132 volatile unsigned int reg3; /* 0x100: ???? */
133 volatile unsigned int intr_stat; /* 0x104: irq status */
134#define PLANB_CLR_IRQ 0x00 /* clear Plan B interrupt */
135#define PLANB_GEN_IRQ 0x01 /* assert Plan B interrupt */
136#define PLANB_FRM_IRQ 0x0100 /* end of frame */
137 unsigned int pad3[1]; /* empty? */
138 volatile unsigned int reg5; /* 0x10c: ??? */
139 unsigned int pad4[60]; /* empty? */
140 volatile unsigned char saa_addr; /* 0x200: SAA subadr */
141 char pad5[3];
142 volatile unsigned char saa_regval; /* SAA7196 write reg. val */
143 char pad6[3];
144 volatile unsigned char saa_status; /* SAA7196 status byte */
145 /* There is more unused stuff here */
146};
147
148struct planb_window {
149 int x, y;
150 ushort width, height;
151 ushort bpp, bpl, depth, pad;
152 ushort swidth, sheight;
153 int norm;
154 int interlace;
155 u32 color_fmt;
156 int chromakey;
157 int mode; /* used to switch between TV/VTR modes */
158};
159
160struct planb_suspend {
161 int overlay;
162 int frame;
163 struct dbdma_cmd cmd;
164};
165
166struct planb {
167 struct video_device video_dev;
168 struct video_picture picture; /* Current picture params */
169 struct video_audio audio_dev; /* Current audio params */
170
171 volatile struct planb_registers *planb_base; /* virt base of planb */
172 struct planb_registers *planb_base_phys; /* phys base of planb */
173 void *priv_space; /* Org. alloc. mem for kfree */
174 int user;
175 unsigned int tab_size;
176 int maxlines;
177 struct semaphore lock;
178 unsigned int irq; /* interrupt number */
179 volatile unsigned int intr_mask;
180
181 int overlay; /* overlay running? */
182 struct planb_window win;
183 unsigned long frame_buffer_phys; /* We need phys for DMA */
184 int offset; /* offset of pixel 1 */
185 volatile struct dbdma_cmd *ch1_cmd; /* Video In DMA cmd buffer */
186 volatile struct dbdma_cmd *ch2_cmd; /* Clip Out DMA cmd buffer */
187 volatile struct dbdma_cmd *overlay_last1;
188 volatile struct dbdma_cmd *overlay_last2;
189 unsigned long ch1_cmd_phys;
190 volatile unsigned char *mask; /* Clipmask buffer */
191 int suspend;
192 wait_queue_head_t suspendq;
193 struct planb_suspend suspended;
194 int cmd_buff_inited; /* cmd buffer inited? */
195
196 int grabbing;
197 unsigned int gcount;
198 wait_queue_head_t capq;
199 int last_fr;
200 int prev_last_fr;
201 unsigned char **rawbuf;
202 int rawbuf_size;
203 int gbuf_idx[MAX_GBUFFERS];
204 volatile struct dbdma_cmd *cap_cmd[MAX_GBUFFERS];
205 volatile struct dbdma_cmd *last_cmd[MAX_GBUFFERS];
206 volatile struct dbdma_cmd *pre_cmd[MAX_GBUFFERS];
207 int need_pre_capture[MAX_GBUFFERS];
208#define PLANB_DUMMY 40 /* # of command buf's allocated for pre-capture seq. */
209 int gwidth[MAX_GBUFFERS], gheight[MAX_GBUFFERS];
210 unsigned int gfmt[MAX_GBUFFERS];
211 int gnorm_switch[MAX_GBUFFERS];
212 volatile unsigned int *frame_stat;
213#define GBUFFER_UNUSED 0x00U
214#define GBUFFER_GRABBING 0x01U
215#define GBUFFER_DONE 0x02U
216#ifdef PLANB_GSCANLINE
217 int gbytes_per_line;
218#else
219#define MAX_LNUM 431 /* change this if PLANB_MAXLINES or */
220 /* PLANB_MAXPIXELS changes */
221 int l_fr_addr_idx[MAX_GBUFFERS];
222 unsigned char *l_to_addr[MAX_GBUFFERS][MAX_LNUM];
223 int l_to_next_idx[MAX_GBUFFERS][MAX_LNUM];
224 int l_to_next_size[MAX_GBUFFERS][MAX_LNUM];
225 int lsize[MAX_GBUFFERS], lnum[MAX_GBUFFERS];
226#endif
227};
228
229#endif /* __KERNEL__ */
230
231#endif /* _PLANB_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-20 00:50:36 -0500