2 ivtv driver internal defines and structures
3 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
4 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 /* Internal header for ivtv project:
26 * Driver for the cx23415/6 chip.
27 * Author: Kevin Thayer (nufan_wfk at yahoo.com)
29 * http://www.ivtvdriver.org
32 * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com>
33 * and Takeru KOMORIYA<komoriya@paken.org>
35 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
36 * using information provided by Jiun-Kuei Jung @ AVerMedia.
39 #include <linux/version.h>
40 #include <linux/module.h>
41 #include <linux/init.h>
42 #include <linux/delay.h>
43 #include <linux/sched.h>
45 #include <linux/pci.h>
46 #include <linux/interrupt.h>
47 #include <linux/spinlock.h>
48 #include <linux/i2c.h>
49 #include <linux/i2c-algo-bit.h>
50 #include <linux/list.h>
51 #include <linux/unistd.h>
52 #include <linux/byteorder/swab.h>
53 #include <linux/pagemap.h>
54 #include <linux/workqueue.h>
55 #include <linux/mutex.h>
56 #include <asm/uaccess.h>
57 #include <asm/system.h>
59 #include <linux/dvb/video.h>
60 #include <linux/dvb/audio.h>
61 #include <media/v4l2-common.h>
62 #include <media/tuner.h>
63 #include <media/cx2341x.h>
65 #include <media/ivtv.h>
69 #define IVTV_ENCODER_OFFSET 0x00000000
70 #define IVTV_ENCODER_SIZE 0x00800000 /* Total size is 0x01000000, but only first half is used */
71 #define IVTV_DECODER_OFFSET 0x01000000
72 #define IVTV_DECODER_SIZE 0x00800000 /* Total size is 0x01000000, but only first half is used */
73 #define IVTV_REG_OFFSET 0x02000000
74 #define IVTV_REG_SIZE 0x00010000
76 /* Maximum ivtv driver instances. Some people have a huge number of
77 capture cards, so set this to a high value. */
78 #define IVTV_MAX_CARDS 32
80 #define IVTV_ENC_STREAM_TYPE_MPG 0
81 #define IVTV_ENC_STREAM_TYPE_YUV 1
82 #define IVTV_ENC_STREAM_TYPE_VBI 2
83 #define IVTV_ENC_STREAM_TYPE_PCM 3
84 #define IVTV_ENC_STREAM_TYPE_RAD 4
85 #define IVTV_DEC_STREAM_TYPE_MPG 5
86 #define IVTV_DEC_STREAM_TYPE_VBI 6
87 #define IVTV_DEC_STREAM_TYPE_VOUT 7
88 #define IVTV_DEC_STREAM_TYPE_YUV 8
89 #define IVTV_MAX_STREAMS 9
91 #define IVTV_DMA_SG_OSD_ENT (2883584/PAGE_SIZE) /* sg entities */
94 #define IVTV_REG_DMAXFER (0x0000)
95 #define IVTV_REG_DMASTATUS (0x0004)
96 #define IVTV_REG_DECDMAADDR (0x0008)
97 #define IVTV_REG_ENCDMAADDR (0x000c)
98 #define IVTV_REG_DMACONTROL (0x0010)
99 #define IVTV_REG_IRQSTATUS (0x0040)
100 #define IVTV_REG_IRQMASK (0x0048)
102 /* Setup Registers */
103 #define IVTV_REG_ENC_SDRAM_REFRESH (0x07F8)
104 #define IVTV_REG_ENC_SDRAM_PRECHARGE (0x07FC)
105 #define IVTV_REG_DEC_SDRAM_REFRESH (0x08F8)
106 #define IVTV_REG_DEC_SDRAM_PRECHARGE (0x08FC)
107 #define IVTV_REG_VDM (0x2800)
108 #define IVTV_REG_AO (0x2D00)
109 #define IVTV_REG_BYTEFLUSH (0x2D24)
110 #define IVTV_REG_SPU (0x9050)
111 #define IVTV_REG_HW_BLOCKS (0x9054)
112 #define IVTV_REG_VPU (0x9058)
113 #define IVTV_REG_APU (0xA064)
116 #define I2C_CLIENTS_MAX 16
119 extern int ivtv_debug;
121 #define IVTV_DBGFLG_WARN (1 << 0)
122 #define IVTV_DBGFLG_INFO (1 << 1)
123 #define IVTV_DBGFLG_MB (1 << 2)
124 #define IVTV_DBGFLG_IOCTL (1 << 3)
125 #define IVTV_DBGFLG_FILE (1 << 4)
126 #define IVTV_DBGFLG_DMA (1 << 5)
127 #define IVTV_DBGFLG_IRQ (1 << 6)
128 #define IVTV_DBGFLG_DEC (1 << 7)
129 #define IVTV_DBGFLG_YUV (1 << 8)
130 #define IVTV_DBGFLG_I2C (1 << 9)
131 /* Flag to turn on high volume debugging */
132 #define IVTV_DBGFLG_HIGHVOL (1 << 10)
134 /* NOTE: extra space before comma in 'itv->num , ## args' is required for
135 gcc-2.95, otherwise it won't compile. */
136 #define IVTV_DEBUG(x, type, fmt, args...) \
138 if ((x) & ivtv_debug) \
139 printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
141 #define IVTV_DEBUG_WARN(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_WARN, "warn", fmt , ## args)
142 #define IVTV_DEBUG_INFO(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_INFO, "info", fmt , ## args)
143 #define IVTV_DEBUG_MB(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_MB, "mb", fmt , ## args)
144 #define IVTV_DEBUG_DMA(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_DMA, "dma", fmt , ## args)
145 #define IVTV_DEBUG_IOCTL(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
146 #define IVTV_DEBUG_FILE(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_FILE, "file", fmt , ## args)
147 #define IVTV_DEBUG_I2C(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_I2C, "i2c", fmt , ## args)
148 #define IVTV_DEBUG_IRQ(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IRQ, "irq", fmt , ## args)
149 #define IVTV_DEBUG_DEC(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_DEC, "dec", fmt , ## args)
150 #define IVTV_DEBUG_YUV(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_YUV, "yuv", fmt , ## args)
152 #define IVTV_DEBUG_HIGH_VOL(x, type, fmt, args...) \
154 if (((x) & ivtv_debug) && (ivtv_debug & IVTV_DBGFLG_HIGHVOL)) \
155 printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
157 #define IVTV_DEBUG_HI_WARN(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_WARN, "warn", fmt , ## args)
158 #define IVTV_DEBUG_HI_INFO(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_INFO, "info", fmt , ## args)
159 #define IVTV_DEBUG_HI_MB(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_MB, "mb", fmt , ## args)
160 #define IVTV_DEBUG_HI_DMA(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DMA, "dma", fmt , ## args)
161 #define IVTV_DEBUG_HI_IOCTL(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
162 #define IVTV_DEBUG_HI_FILE(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_FILE, "file", fmt , ## args)
163 #define IVTV_DEBUG_HI_I2C(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_I2C, "i2c", fmt , ## args)
164 #define IVTV_DEBUG_HI_IRQ(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IRQ, "irq", fmt , ## args)
165 #define IVTV_DEBUG_HI_DEC(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DEC, "dec", fmt , ## args)
166 #define IVTV_DEBUG_HI_YUV(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_YUV, "yuv", fmt , ## args)
168 /* Standard kernel messages */
169 #define IVTV_ERR(fmt, args...) printk(KERN_ERR "ivtv%d: " fmt, itv->num , ## args)
170 #define IVTV_WARN(fmt, args...) printk(KERN_WARNING "ivtv%d: " fmt, itv->num , ## args)
171 #define IVTV_INFO(fmt, args...) printk(KERN_INFO "ivtv%d: " fmt, itv->num , ## args)
173 /* output modes (cx23415 only) */
177 #define OUT_UDMA_YUV 3
178 #define OUT_PASSTHROUGH 4
180 #define IVTV_MAX_PGM_INDEX (400)
182 struct ivtv_options {
183 int kilobytes[IVTV_MAX_STREAMS]; /* size in kilobytes of each stream */
184 int cardtype; /* force card type on load */
185 int tuner; /* set tuner on load */
186 int radio; /* enable/disable radio */
187 int newi2c; /* new I2C algorithm */
190 /* ivtv-specific mailbox template */
191 struct ivtv_mailbox {
196 u32 data[CX2341X_MBOX_MAX_DATA];
199 struct ivtv_api_cache {
200 unsigned long last_jiffies; /* when last command was issued */
201 u32 data[CX2341X_MBOX_MAX_DATA]; /* last sent api data */
204 struct ivtv_mailbox_data {
205 volatile struct ivtv_mailbox __iomem *mbox;
206 /* Bits 0-2 are for the encoder mailboxes, 0-1 are for the decoder mailboxes.
207 If the bit is set, then the corresponding mailbox is in use by the driver. */
212 /* per-buffer bit flags */
213 #define IVTV_F_B_NEED_BUF_SWAP (1 << 0) /* this buffer should be byte swapped */
215 /* per-stream, s_flags */
216 #define IVTV_F_S_DMA_PENDING 0 /* this stream has pending DMA */
217 #define IVTV_F_S_DMA_HAS_VBI 1 /* the current DMA request also requests VBI data */
218 #define IVTV_F_S_NEEDS_DATA 2 /* this decoding stream needs more data */
220 #define IVTV_F_S_CLAIMED 3 /* this stream is claimed */
221 #define IVTV_F_S_STREAMING 4 /* the fw is decoding/encoding this stream */
222 #define IVTV_F_S_INTERNAL_USE 5 /* this stream is used internally (sliced VBI processing) */
223 #define IVTV_F_S_PASSTHROUGH 6 /* this stream is in passthrough mode */
224 #define IVTV_F_S_STREAMOFF 7 /* signal end of stream EOS */
225 #define IVTV_F_S_APPL_IO 8 /* this stream is used read/written by an application */
227 #define IVTV_F_S_PIO_PENDING 9 /* this stream has pending PIO */
228 #define IVTV_F_S_PIO_HAS_VBI 1 /* the current PIO request also requests VBI data */
230 /* per-ivtv, i_flags */
231 #define IVTV_F_I_DMA 0 /* DMA in progress */
232 #define IVTV_F_I_UDMA 1 /* UDMA in progress */
233 #define IVTV_F_I_UDMA_PENDING 2 /* UDMA pending */
234 #define IVTV_F_I_SPEED_CHANGE 3 /* a speed change is in progress */
235 #define IVTV_F_I_EOS 4 /* end of encoder stream reached */
236 #define IVTV_F_I_RADIO_USER 5 /* the radio tuner is selected */
237 #define IVTV_F_I_DIG_RST 6 /* reset digitizer */
238 #define IVTV_F_I_DEC_YUV 7 /* YUV instead of MPG is being decoded */
239 #define IVTV_F_I_UPDATE_CC 9 /* CC should be updated */
240 #define IVTV_F_I_UPDATE_WSS 10 /* WSS should be updated */
241 #define IVTV_F_I_UPDATE_VPS 11 /* VPS should be updated */
242 #define IVTV_F_I_DECODING_YUV 12 /* this stream is YUV frame decoding */
243 #define IVTV_F_I_ENC_PAUSED 13 /* the encoder is paused */
244 #define IVTV_F_I_VALID_DEC_TIMINGS 14 /* last_dec_timing is valid */
245 #define IVTV_F_I_HAVE_WORK 15 /* used in the interrupt handler: there is work to be done */
246 #define IVTV_F_I_WORK_HANDLER_VBI 16 /* there is work to be done for VBI */
247 #define IVTV_F_I_WORK_HANDLER_YUV 17 /* there is work to be done for YUV */
248 #define IVTV_F_I_WORK_HANDLER_PIO 18 /* there is work to be done for PIO */
249 #define IVTV_F_I_PIO 19 /* PIO in progress */
250 #define IVTV_F_I_DEC_PAUSED 20 /* the decoder is paused */
251 #define IVTV_F_I_INITED 21 /* set after first open */
252 #define IVTV_F_I_FAILED 22 /* set if first open failed */
254 /* Event notifications */
255 #define IVTV_F_I_EV_DEC_STOPPED 28 /* decoder stopped event */
256 #define IVTV_F_I_EV_VSYNC 29 /* VSYNC event */
257 #define IVTV_F_I_EV_VSYNC_FIELD 30 /* VSYNC event field (0 = first, 1 = second field) */
258 #define IVTV_F_I_EV_VSYNC_ENABLED 31 /* VSYNC event enabled */
260 /* Scatter-Gather array element, used in DMA transfers */
261 struct ivtv_sg_element {
267 struct ivtv_user_dma {
270 struct page *map[IVTV_DMA_SG_OSD_ENT];
271 /* Needed when dealing with highmem userspace buffers */
272 struct page *bouncemap[IVTV_DMA_SG_OSD_ENT];
274 /* Base Dev SG Array for cx23415/6 */
275 struct ivtv_sg_element SGarray[IVTV_DMA_SG_OSD_ENT];
276 dma_addr_t SG_handle;
279 /* SG List of Buffers */
280 struct scatterlist SGlist[IVTV_DMA_SG_OSD_ENT];
283 struct ivtv_dma_page_info {
293 struct list_head list;
294 dma_addr_t dma_handle;
295 unsigned short b_flags;
296 unsigned short dma_xfer_cnt;
303 struct list_head list; /* the list of buffers in this queue */
304 u32 buffers; /* number of buffers in this queue */
305 u32 length; /* total number of bytes of available buffer space */
306 u32 bytesused; /* total number of bytes used in this queue */
309 struct ivtv; /* forward reference */
312 /* These first four fields are always set, even if the stream
313 is not actually created. */
314 struct video_device *v4l2dev; /* NULL when stream not created */
315 struct ivtv *itv; /* for ease of use */
316 const char *name; /* name of the stream */
317 int type; /* stream type */
320 spinlock_t qlock; /* locks access to the queues */
321 unsigned long s_flags; /* status flags, see above */
322 int dma; /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
332 wait_queue_head_t waitq;
341 struct ivtv_queue q_free; /* free buffers */
342 struct ivtv_queue q_full; /* full buffers */
343 struct ivtv_queue q_io; /* waiting for I/O */
344 struct ivtv_queue q_dma; /* waiting for DMA */
345 struct ivtv_queue q_predma; /* waiting for DMA */
347 /* DMA xfer counter, buffers belonging to the same DMA
348 xfer will have the same dma_xfer_cnt. */
351 /* Base Dev SG Array for cx23415/6 */
352 struct ivtv_sg_element *sg_pending;
353 struct ivtv_sg_element *sg_processing;
354 struct ivtv_sg_element *sg_dma;
355 dma_addr_t sg_handle;
357 int sg_processing_size;
360 /* SG List of Buffers */
361 struct scatterlist *SGlist;
364 struct ivtv_open_id {
365 u32 open_id; /* unique ID for this file descriptor */
366 int type; /* stream type */
367 int yuv_frames; /* 1: started OUT_UDMA_YUV output mode */
368 enum v4l2_priority prio; /* priority */
372 struct yuv_frame_info
396 #define IVTV_YUV_MODE_INTERLACED 0x00
397 #define IVTV_YUV_MODE_PROGRESSIVE 0x01
398 #define IVTV_YUV_MODE_AUTO 0x02
399 #define IVTV_YUV_MODE_MASK 0x03
401 #define IVTV_YUV_SYNC_EVEN 0x00
402 #define IVTV_YUV_SYNC_ODD 0x04
403 #define IVTV_YUV_SYNC_MASK 0x04
405 struct yuv_playback_info
465 int frame_interlaced;
471 atomic_t next_dma_frame;
472 atomic_t next_fill_frame;
474 u32 yuv_forced_update;
477 int sync_field[4]; /* Field to sync on */
478 int field_delay[4]; /* Flag to extend duration of previous frame */
479 u8 fields_lapsed; /* Counter used when delaying a frame */
481 struct yuv_frame_info new_frame_info[4];
482 struct yuv_frame_info old_frame_info;
483 struct yuv_frame_info old_frame_info_args;
486 dma_addr_t blanking_dmaptr;
489 #define IVTV_VBI_FRAMES 32
493 /* VBI general fixed card data */
494 u32 raw_decoder_line_size; /* raw VBI line size from digitizer */
495 u8 raw_decoder_sav_odd_field; /* raw VBI Start Active Video digitizer code of odd field */
496 u8 raw_decoder_sav_even_field; /* raw VBI Start Active Video digitizer code of even field */
497 u32 sliced_decoder_line_size; /* sliced VBI line size from digitizer */
498 u8 sliced_decoder_sav_odd_field; /* sliced VBI Start Active Video digitizer code of odd field */
499 u8 sliced_decoder_sav_even_field; /* sliced VBI Start Active Video digitizer code of even field */
502 u32 enc_start, enc_size;
506 u8 cc_data_even[256];
514 struct v4l2_format in;
515 /* convenience pointer to sliced struct in vbi_in union */
516 struct v4l2_sliced_vbi_format *sliced_in;
519 /* Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
520 One for /dev/vbi0 and one for /dev/vbi8 */
521 struct v4l2_sliced_vbi_data sliced_data[36];
522 struct v4l2_sliced_vbi_data sliced_dec_data[36];
524 /* Buffer for VBI data inserted into MPEG stream.
525 The first byte is a dummy byte that's never used.
526 The next 16 bytes contain the MPEG header for the VBI data,
527 the remainder is the actual VBI data.
528 The max size accepted by the MPEG VBI reinsertion turns out
529 to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
530 where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
531 a single line header byte and 2 * 18 is the number of VBI lines per frame.
533 However, it seems that the data must be 1K aligned, so we have to
534 pad the data until the 1 or 2 K boundary.
536 This pointer array will allocate 2049 bytes to store each VBI frame. */
537 u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
538 u32 sliced_mpeg_size[IVTV_VBI_FRAMES];
539 struct ivtv_buffer sliced_mpeg_buf;
547 /* forward declaration of struct defined in ivtv-cards.h */
550 /* Struct to hold info about ivtv cards */
552 /* General fixed card data */
553 int num; /* board number, -1 during init! */
554 char name[8]; /* board name for printk and interrupts (e.g. 'ivtv0') */
555 struct pci_dev *dev; /* PCI device */
556 const struct ivtv_card *card; /* card information */
557 const char *card_name; /* full name of the card */
558 u8 has_cx23415; /* 1 if it is a cx23415 based card, 0 for cx23416 */
559 u8 pvr150_workaround; /* 1 if the cx25840 needs to workaround a PVR150 bug */
560 u8 nof_inputs; /* number of video inputs */
561 u8 nof_audio_inputs; /* number of audio inputs */
562 u32 v4l2_cap; /* V4L2 capabilities of card */
563 u32 hw_flags; /* hardware description of the board */
564 int tunerid; /* userspace tuner ID for experimental Xceive tuner support */
565 v4l2_std_id tuner_std; /* the norm of the card's tuner (fixed) */
566 /* controlling video decoder function */
567 int (*video_dec_func)(struct ivtv *, unsigned int, void *);
568 u32 base_addr; /* PCI resource base address */
569 volatile void __iomem *enc_mem; /* pointer to mapped encoder memory */
570 volatile void __iomem *dec_mem; /* pointer to mapped decoder memory */
571 volatile void __iomem *reg_mem; /* pointer to mapped registers */
572 struct ivtv_options options; /* user options */
575 /* High-level state info */
576 unsigned long i_flags; /* global ivtv flags */
577 u8 is_50hz; /* 1 if the current capture standard is 50 Hz */
578 u8 is_60hz /* 1 if the current capture standard is 60 Hz */;
579 u8 is_out_50hz /* 1 if the current TV output standard is 50 Hz */;
580 u8 is_out_60hz /* 1 if the current TV output standard is 60 Hz */;
581 int output_mode; /* decoder output mode: NONE, MPG, YUV, UDMA YUV, passthrough */
582 u32 audio_input; /* current audio input */
583 u32 active_input; /* current video input */
584 u32 active_output; /* current video output */
585 v4l2_std_id std; /* current capture TV standard */
586 v4l2_std_id std_out; /* current TV output standard */
587 u8 audio_stereo_mode; /* decoder setting how to handle stereo MPEG audio */
588 u8 audio_bilingual_mode; /* decoder setting how to handle bilingual MPEG audio */
589 struct cx2341x_mpeg_params params; /* current encoder parameters */
593 spinlock_t lock; /* lock access to this struct */
594 struct mutex serialize_lock; /* mutex used to serialize open/close/start/stop/ioctl operations */
598 int stream_buf_size[IVTV_MAX_STREAMS]; /* stream buffer size */
599 struct ivtv_stream streams[IVTV_MAX_STREAMS]; /* stream data */
600 atomic_t capturing; /* count number of active capture streams */
601 atomic_t decoding; /* count number of active decoding streams */
604 /* Interrupts & DMA */
605 u32 irqmask; /* active interrupts */
606 u32 irq_rr_idx; /* round-robin stream index */
607 struct workqueue_struct *irq_work_queues; /* workqueue for PIO/YUV/VBI actions */
608 struct work_struct irq_work_queue; /* work entry */
609 spinlock_t dma_reg_lock; /* lock access to DMA engine registers */
610 int cur_dma_stream; /* index of current stream doing DMA (-1 if none) */
611 int cur_pio_stream; /* index of current stream doing PIO (-1 if none) */
612 u32 dma_data_req_offset; /* store offset in decoder memory of current DMA request */
613 u32 dma_data_req_size; /* store size of current DMA request */
614 int dma_retries; /* current DMA retry attempt */
615 struct ivtv_user_dma udma; /* user based DMA for OSD */
616 struct timer_list dma_timer; /* timer used to catch unfinished DMAs */
617 u32 last_vsync_field; /* last seen vsync field */
618 wait_queue_head_t dma_waitq; /* wake up when the current DMA is finished */
619 wait_queue_head_t eos_waitq; /* wake up when EOS arrives */
620 wait_queue_head_t event_waitq; /* wake up when the next decoder event arrives */
621 wait_queue_head_t vsync_waitq; /* wake up when the next decoder vsync arrives */
625 struct ivtv_mailbox_data enc_mbox; /* encoder mailboxes */
626 struct ivtv_mailbox_data dec_mbox; /* decoder mailboxes */
627 struct ivtv_api_cache api_cache[256]; /* cached API commands */
631 struct i2c_adapter i2c_adap;
632 struct i2c_algo_bit_data i2c_algo;
633 struct i2c_client i2c_client;
634 struct i2c_client *i2c_clients[I2C_CLIENTS_MAX];/* pointers to all I2C clients */
635 int i2c_state; /* i2c bit state */
636 struct mutex i2c_bus_lock; /* lock i2c bus */
639 /* Program Index information */
640 u32 pgm_info_offset; /* start of pgm info in encoder memory */
641 u32 pgm_info_num; /* number of elements in the pgm cyclic buffer in encoder memory */
642 u32 pgm_info_write_idx; /* last index written by the card that was transferred to pgm_info[] */
643 u32 pgm_info_read_idx; /* last index in pgm_info read by the application */
644 struct v4l2_enc_idx_entry pgm_info[IVTV_MAX_PGM_INDEX]; /* filled from the pgm cyclic buffer on the card */
648 u32 open_id; /* incremented each time an open occurs, is >= 1 */
649 struct v4l2_prio_state prio; /* priority state */
650 int search_pack_header; /* 1 if ivtv_copy_buf_to_user() is scanning for a pack header (0xba) */
651 int speed; /* current playback speed setting */
652 u8 speed_mute_audio; /* 1 if audio should be muted when fast forward */
653 u64 mpg_data_received; /* number of bytes received from the MPEG stream */
654 u64 vbi_data_inserted; /* number of VBI bytes inserted into the MPEG stream */
655 u32 last_dec_timing[3]; /* cache last retrieved pts/scr/frame values */
656 unsigned long dualwatch_jiffies;/* jiffies value of the previous dualwatch check */
657 u16 dualwatch_stereo_mode; /* current detected dualwatch stereo mode */
661 struct vbi_info vbi; /* VBI-specific data */
665 struct yuv_playback_info yuv_info; /* YUV playback data */
669 unsigned long osd_video_pbase;
670 int osd_global_alpha_state; /* 1 = global alpha is on */
671 int osd_local_alpha_state; /* 1 = local alpha is on */
672 int osd_chroma_key_state; /* 1 = chroma-keying is on */
673 u8 osd_global_alpha; /* current global alpha */
674 u32 osd_chroma_key; /* current chroma key */
675 u32 osd_pixelformat; /* current pixel format */
676 struct v4l2_rect osd_rect; /* current OSD position and size */
677 struct v4l2_rect main_rect; /* current Main window position and size */
678 struct osd_info *osd_info; /* ivtv-fb private OSD info */
682 extern struct ivtv *ivtv_cards[];
683 extern int ivtv_cards_active;
684 extern int ivtv_first_minor;
685 extern spinlock_t ivtv_cards_lock;
687 /*==============Prototypes==================*/
690 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask);
691 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask);
693 /* try to set output mode, return current mode. */
694 int ivtv_set_output_mode(struct ivtv *itv, int mode);
696 /* return current output stream based on current mode */
697 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv);
699 /* Return non-zero if a signal is pending */
700 int ivtv_msleep_timeout(unsigned int msecs, int intr);
702 /* Wait on queue, returns -EINTR if interrupted */
703 int ivtv_waitq(wait_queue_head_t *waitq);
705 /* Read Hauppauge eeprom */
706 struct tveeprom; /* forward reference */
707 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv);
709 /* First-open initialization: load firmware, init cx25840, etc. */
710 int ivtv_init_on_first_open(struct ivtv *itv);
712 /* This is a PCI post thing, where if the pci register is not read, then
713 the write doesn't always take effect right away. By reading back the
714 register any pending PCI writes will be performed (in order), and so
715 you can be sure that the writes are guaranteed to be done.
717 Rarely needed, only in some timing sensitive cases.
718 Apparently if this is not done some motherboards seem
719 to kill the firmware and get into the broken state until computer is
721 #define write_sync(val, reg) \
722 do { writel(val, reg); readl(reg); } while (0)
724 #define read_reg(reg) readl(itv->reg_mem + (reg))
725 #define write_reg(val, reg) writel(val, itv->reg_mem + (reg))
726 #define write_reg_sync(val, reg) \
727 do { write_reg(val, reg); read_reg(reg); } while (0)
729 #define read_enc(addr) readl(itv->enc_mem + (u32)(addr))
730 #define write_enc(val, addr) writel(val, itv->enc_mem + (u32)(addr))
731 #define write_enc_sync(val, addr) \
732 do { write_enc(val, addr); read_enc(addr); } while (0)
734 #define read_dec(addr) readl(itv->dec_mem + (u32)(addr))
735 #define write_dec(val, addr) writel(val, itv->dec_mem + (u32)(addr))
736 #define write_dec_sync(val, addr) \
737 do { write_dec(val, addr); read_dec(addr); } while (0)