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1/*
2 * Driver for the NXP SAA7164 PCIe bridge
3 *
63a412ec 4 * Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
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5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 *
15 * GNU General Public License for more details.
16 *
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., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22/*
23 Driver architecture
24 *******************
25
26 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
27 | : Standard Linux driver framework for creating
28 | : exposing and managing interfaces to the rest
29 | : of the kernel or userland. Also uses _fw.c to load
30 | : firmware direct into the PCIe bus, bypassing layers.
31 V
32 saa7164_api..() : Translate kernel specific functions/features
33 | : into command buffers.
34 V
35 saa7164_cmd..() : Manages the flow of command packets on/off,
36 | : the bus. Deal with bus errors, timeouts etc.
37 V
38 saa7164_bus..() : Manage a read/write memory ring buffer in the
39 | : PCIe Address space.
40 |
41 | saa7164_fw...() : Load any frimware
42 | | : direct into the device
43 V V
44 <- ----------------- PCIe address space -------------------- ->
45*/
46
47#include <linux/pci.h>
48#include <linux/i2c.h>
443c1228 49#include <linux/kdev_t.h>
7615e434 50#include <linux/mutex.h>
12d3203e 51#include <linux/crc32.h>
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52#include <linux/kthread.h>
53#include <linux/freezer.h>
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54
55#include <media/tuner.h>
56#include <media/tveeprom.h>
57#include <media/videobuf-dma-sg.h>
58#include <media/videobuf-dvb.h>
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59#include <dvb_demux.h>
60#include <dvb_frontend.h>
61#include <dvb_net.h>
62#include <dvbdev.h>
63#include <dmxdev.h>
64#include <media/v4l2-common.h>
65#include <media/v4l2-ioctl.h>
d66de790 66#include <media/v4l2-device.h>
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67
68#include "saa7164-reg.h"
69#include "saa7164-types.h"
70
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71#define SAA7164_MAXBOARDS 8
72
73#define UNSET (-1U)
74#define SAA7164_BOARD_NOAUTO UNSET
75#define SAA7164_BOARD_UNKNOWN 0
76#define SAA7164_BOARD_UNKNOWN_REV2 1
77#define SAA7164_BOARD_UNKNOWN_REV3 2
78#define SAA7164_BOARD_HAUPPAUGE_HVR2250 3
79#define SAA7164_BOARD_HAUPPAUGE_HVR2200 4
80#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5
81#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6
82#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7
e3335222 83#define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8
62dd28d0 84#define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 9
de2fb698 85#define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 10
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86#define SAA7164_BOARD_HAUPPAUGE_HVR2255proto 11
87#define SAA7164_BOARD_HAUPPAUGE_HVR2255 12
88#define SAA7164_BOARD_HAUPPAUGE_HVR2205 13
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89
90#define SAA7164_MAX_UNITS 8
91#define SAA7164_TS_NUMBER_OF_LINES 312
a97781ac 92#define SAA7164_PS_NUMBER_OF_LINES 256
443c1228 93#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */
66e1d378 94#define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */
e8ce2f21 95#define SAA7164_MAX_VBI_BUFFERS 64
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96
97/* Port related defines */
98#define SAA7164_PORT_TS1 (0)
99#define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1)
100#define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1)
101#define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1)
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102#define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1)
103#define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1)
104#define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1)
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105
106#define DBGLVL_FW 4
107#define DBGLVL_DVB 8
108#define DBGLVL_I2C 16
109#define DBGLVL_API 32
110#define DBGLVL_CMD 64
111#define DBGLVL_BUS 128
112#define DBGLVL_IRQ 256
113#define DBGLVL_BUF 512
9b8b0199 114#define DBGLVL_ENC 1024
e8ce2f21 115#define DBGLVL_VBI 2048
0b62ceb0 116#define DBGLVL_THR 4096
1247ff5c 117#define DBGLVL_CPU 8192
443c1228 118
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119#define SAA7164_NORMS \
120 (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_443)
7615e434 121
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122enum port_t {
123 SAA7164_MPEG_UNDEFINED = 0,
124 SAA7164_MPEG_DVB,
add3f580 125 SAA7164_MPEG_ENCODER,
e8ce2f21 126 SAA7164_MPEG_VBI,
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127};
128
129enum saa7164_i2c_bus_nr {
130 SAA7164_I2C_BUS_0 = 0,
131 SAA7164_I2C_BUS_1,
132 SAA7164_I2C_BUS_2,
133};
134
135enum saa7164_buffer_flags {
136 SAA7164_BUFFER_UNDEFINED = 0,
137 SAA7164_BUFFER_FREE,
138 SAA7164_BUFFER_BUSY,
139 SAA7164_BUFFER_FULL
140};
141
142enum saa7164_unit_type {
143 SAA7164_UNIT_UNDEFINED = 0,
144 SAA7164_UNIT_DIGITAL_DEMODULATOR,
145 SAA7164_UNIT_ANALOG_DEMODULATOR,
146 SAA7164_UNIT_TUNER,
147 SAA7164_UNIT_EEPROM,
148 SAA7164_UNIT_ZILOG_IRBLASTER,
149 SAA7164_UNIT_ENCODER,
150};
151
152/* The PCIe bridge doesn't grant direct access to i2c.
153 * Instead, you address i2c devices using a uniqely
154 * allocated 'unitid' value via a messaging API. This
155 * is a problem. The kernel and existing demod/tuner
156 * drivers expect to talk 'i2c', so we have to maintain
157 * a translation layer, and a series of functions to
158 * convert i2c bus + device address into a unit id.
159 */
160struct saa7164_unit {
161 enum saa7164_unit_type type;
162 u8 id;
163 char *name;
164 enum saa7164_i2c_bus_nr i2c_bus_nr;
165 u8 i2c_bus_addr;
166 u8 i2c_reg_len;
167};
168
169struct saa7164_board {
170 char *name;
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171 enum port_t porta, portb, portc,
172 portd, porte, portf;
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173 enum {
174 SAA7164_CHIP_UNDEFINED = 0,
175 SAA7164_CHIP_REV2,
176 SAA7164_CHIP_REV3,
177 } chiprev;
178 struct saa7164_unit unit[SAA7164_MAX_UNITS];
179};
180
181struct saa7164_subid {
182 u16 subvendor;
183 u16 subdevice;
184 u32 card;
185};
186
96d8420d 187struct saa7164_encoder_fh {
7615e434 188 struct saa7164_port *port;
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189 atomic_t v4l_reading;
190};
191
192struct saa7164_vbi_fh {
193 struct saa7164_port *port;
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194 atomic_t v4l_reading;
195};
196
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197struct saa7164_histogram_bucket {
198 u32 val;
199 u32 count;
200 u64 update_time;
201};
202
203struct saa7164_histogram {
204 char name[32];
205 struct saa7164_histogram_bucket counter1[64];
206};
207
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208struct saa7164_user_buffer {
209 struct list_head list;
210
211 /* Attributes */
212 u8 *data;
213 u32 pos;
214 u32 actual_size;
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215
216 u32 crc;
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217};
218
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219struct saa7164_fw_status {
220
221 /* RISC Core details */
222 u32 status;
223 u32 mode;
224 u32 spec;
225 u32 inst;
226 u32 cpuload;
227 u32 remainheap;
228
229 /* Firmware version */
230 u32 version;
231 u32 major;
232 u32 sub;
233 u32 rel;
234 u32 buildnr;
235};
236
237struct saa7164_dvb {
238 struct mutex lock;
239 struct dvb_adapter adapter;
240 struct dvb_frontend *frontend;
241 struct dvb_demux demux;
242 struct dmxdev dmxdev;
243 struct dmx_frontend fe_hw;
244 struct dmx_frontend fe_mem;
245 struct dvb_net net;
246 int feeding;
247};
248
249struct saa7164_i2c {
250 struct saa7164_dev *dev;
251
252 enum saa7164_i2c_bus_nr nr;
253
254 /* I2C I/O */
255 struct i2c_adapter i2c_adap;
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256 struct i2c_client i2c_client;
257 u32 i2c_rc;
258};
259
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260struct saa7164_ctrl {
261 struct v4l2_queryctrl v;
262};
263
264struct saa7164_tvnorm {
265 char *name;
266 v4l2_std_id id;
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267};
268
269struct saa7164_encoder_params {
270 struct saa7164_tvnorm encodernorm;
271 u32 height;
272 u32 width;
273 u32 is_50hz;
274 u32 bitrate; /* bps */
968b11b2 275 u32 bitrate_peak; /* bps */
2600d71c 276 u32 bitrate_mode;
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277 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
278
279 u32 audio_sampling_freq;
280 u32 ctl_mute;
281 u32 ctl_aspect;
3ed43cf9 282 u32 refdist;
5fa56ccd 283 u32 gop_size;
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284};
285
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286struct saa7164_vbi_params {
287 struct saa7164_tvnorm encodernorm;
288 u32 height;
289 u32 width;
290 u32 is_50hz;
291 u32 bitrate; /* bps */
292 u32 bitrate_peak; /* bps */
293 u32 bitrate_mode;
294 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
295
296 u32 audio_sampling_freq;
297 u32 ctl_mute;
298 u32 ctl_aspect;
299 u32 refdist;
300 u32 gop_size;
301};
302
add3f580 303struct saa7164_port;
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304
305struct saa7164_buffer {
306 struct list_head list;
307
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308 /* Note of which h/w buffer list index position we occupy */
309 int idx;
443c1228 310
add3f580 311 struct saa7164_port *port;
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312
313 /* Hardware Specific */
314 /* PCI Memory allocations */
315 enum saa7164_buffer_flags flags; /* Free, Busy, Full */
316
317 /* A block of page align PCI memory */
318 u32 pci_size; /* PCI allocation size in bytes */
065e1477 319 u64 *cpu; /* Virtual address */
443c1228 320 dma_addr_t dma; /* Physical address */
12d3203e 321 u32 crc; /* Checksum for the entire buffer data */
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322
323 /* A page table that splits the block into a number of entries */
324 u32 pt_size; /* PCI allocation size in bytes */
065e1477 325 u64 *pt_cpu; /* Virtual address */
443c1228 326 dma_addr_t pt_dma; /* Physical address */
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327
328 /* Encoder fops */
329 u32 pos;
330 u32 actual_size;
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331};
332
add3f580 333struct saa7164_port {
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334
335 struct saa7164_dev *dev;
443c1228 336 enum port_t type;
add3f580 337 int nr;
443c1228 338
add3f580 339 /* --- Generic port attributes --- */
443c1228 340
add3f580 341 /* HW stream parameters */
4d270cfb 342 struct tmHWStreamParameters hw_streamingparams;
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343
344 /* DMA configuration values, is seeded during initialization */
4d270cfb 345 struct tmComResDMATermDescrHeader hwcfg;
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346
347 /* hardware specific registers */
348 u32 bufcounter;
349 u32 pitch;
350 u32 bufsize;
351 u32 bufoffset;
352 u32 bufptr32l;
353 u32 bufptr32h;
354 u64 bufptr64;
355
356 u32 numpte; /* Number of entries in array, only valid in head */
add3f580 357
443c1228 358 struct mutex dmaqueue_lock;
443c1228 359 struct saa7164_buffer dmaqueue;
add3f580 360
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361 u64 last_irq_msecs, last_svc_msecs;
362 u64 last_irq_msecs_diff, last_svc_msecs_diff;
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363 u32 last_svc_wp;
364 u32 last_svc_rp;
91d80189 365 u64 last_irq_svc_msecs_diff;
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366 u64 last_read_msecs, last_read_msecs_diff;
367 u64 last_poll_msecs, last_poll_msecs_diff;
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368
369 struct saa7164_histogram irq_interval;
370 struct saa7164_histogram svc_interval;
371 struct saa7164_histogram irq_svc_interval;
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372 struct saa7164_histogram read_interval;
373 struct saa7164_histogram poll_interval;
91d80189 374
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375 /* --- DVB Transport Specific --- */
376 struct saa7164_dvb dvb;
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377 struct i2c_client *i2c_client_demod;
378 struct i2c_client *i2c_client_tuner;
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379
380 /* --- Encoder/V4L related attributes --- */
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381 /* Encoder */
382 /* Defaults established in saa7164-encoder.c */
383 struct saa7164_tvnorm encodernorm;
8d2d41e9 384 v4l2_std_id std;
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385 u32 height;
386 u32 width;
387 u32 freq;
388 u32 ts_packet_size;
389 u32 ts_packet_count;
390 u8 mux_input;
391 u8 encoder_profile;
392 u8 video_format;
393 u8 audio_format;
394 u8 video_resolution;
395 u16 ctl_brightness;
396 u16 ctl_contrast;
397 u16 ctl_hue;
398 u16 ctl_saturation;
399 u16 ctl_sharpness;
400 s8 ctl_volume;
401
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402 struct tmComResAFeatureDescrHeader audfeat;
403 struct tmComResEncoderDescrHeader encunit;
404 struct tmComResProcDescrHeader vidproc;
405 struct tmComResExtDevDescrHeader ifunit;
406 struct tmComResTunerDescrHeader tunerunit;
7615e434 407
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408 struct work_struct workenc;
409
e8ce2f21 410 /* V4L Encoder Video */
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411 struct saa7164_encoder_params encoder_params;
412 struct video_device *v4l_device;
413 atomic_t v4l_reader_count;
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414
415 struct saa7164_buffer list_buf_used;
416 struct saa7164_buffer list_buf_free;
417 wait_queue_head_t wait_read;
9230acaa 418
e8ce2f21 419 /* V4L VBI */
4d270cfb 420 struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
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421 struct saa7164_vbi_params vbi_params;
422
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423 /* Debug */
424 u32 sync_errors;
425 u32 v_cc_errors;
426 u32 a_cc_errors;
427 u8 last_v_cc;
428 u8 last_a_cc;
1b0e8e46 429 u32 done_first_interrupt;
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430};
431
432struct saa7164_dev {
433 struct list_head devlist;
434 atomic_t refcount;
435
d66de790
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436 struct v4l2_device v4l2_dev;
437
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438 /* pci stuff */
439 struct pci_dev *pci;
440 unsigned char pci_rev, pci_lat;
441 int pci_bus, pci_slot;
442 u32 __iomem *lmmio;
443 u8 __iomem *bmmio;
444 u32 __iomem *lmmio2;
445 u8 __iomem *bmmio2;
446 int pci_irqmask;
447
448 /* board details */
449 int nr;
450 int hwrevision;
451 u32 board;
0e72cc8b 452 char name[16];
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453
454 /* firmware status */
455 struct saa7164_fw_status fw_status;
22760ed3 456 u32 firmwareloaded;
443c1228 457
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458 struct tmComResHWDescr hwdesc;
459 struct tmComResInterfaceDescr intfdesc;
460 struct tmComResBusDescr busdesc;
443c1228 461
4d270cfb 462 struct tmComResBusInfo bus;
443c1228 463
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464 /* Interrupt status and ack registers */
465 u32 int_status;
466 u32 int_ack;
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467
468 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];
469 struct mutex lock;
470
471 /* I2c related */
472 struct saa7164_i2c i2c_bus[3];
473
474 /* Transport related */
c7e242ba 475 struct saa7164_port ports[SAA7164_MAX_PORTS];
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476
477 /* Deferred command/api interrupts handling */
478 struct work_struct workcmd;
479
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480 /* A kernel thread to monitor the firmware log, used
481 * only in debug mode.
482 */
483 struct task_struct *kthread;
484
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485};
486
487extern struct list_head saa7164_devlist;
dd1ee444 488extern unsigned int waitsecs;
66e1d378 489extern unsigned int encoder_buffers;
e8ce2f21 490extern unsigned int vbi_buffers;
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491
492/* ----------------------------------------------------------- */
493/* saa7164-core.c */
494void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
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495void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
496u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
58acca10 497void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
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498
499/* ----------------------------------------------------------- */
500/* saa7164-fw.c */
501int saa7164_downloadfirmware(struct saa7164_dev *dev);
502
503/* ----------------------------------------------------------- */
504/* saa7164-i2c.c */
505extern int saa7164_i2c_register(struct saa7164_i2c *bus);
506extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
507extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
508 unsigned int cmd, void *arg);
509
510/* ----------------------------------------------------------- */
511/* saa7164-bus.c */
512int saa7164_bus_setup(struct saa7164_dev *dev);
513void saa7164_bus_dump(struct saa7164_dev *dev);
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514int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
515 void *buf);
4d270cfb 516int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
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517 void *buf, int peekonly);
518
519/* ----------------------------------------------------------- */
520/* saa7164-cmd.c */
521int saa7164_cmd_send(struct saa7164_dev *dev,
4d270cfb 522 u8 id, enum tmComResCmd command, u16 controlselector,
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523 u16 size, void *buf);
524void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
39e469ab 525int saa7164_irq_dequeue(struct saa7164_dev *dev);
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526
527/* ----------------------------------------------------------- */
528/* saa7164-api.c */
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529int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
530int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
531int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
532 u32 datalen, u8 *data);
533int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
534 u32 datalen, u8 *data);
535int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
536 u32 datalen, u8 *data);
537int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
538int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
539int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
add3f580 540int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
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541int saa7164_api_initialize_dif(struct saa7164_port *port);
542int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
543int saa7164_api_set_encoder(struct saa7164_port *port);
544int saa7164_api_get_encoder(struct saa7164_port *port);
545int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
546int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
547int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
548int saa7164_api_set_videomux(struct saa7164_port *port);
549int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
550int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
551int saa7164_api_set_audio_std(struct saa7164_port *port);
552int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
553int saa7164_api_get_videomux(struct saa7164_port *port);
e8ce2f21 554int saa7164_api_set_vbi_format(struct saa7164_port *port);
e48836b8 555int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
0b62ceb0 556int saa7164_api_collect_debug(struct saa7164_dev *dev);
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557int saa7164_api_get_load_info(struct saa7164_dev *dev,
558 struct tmFwInfoStruct *i);
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559
560/* ----------------------------------------------------------- */
561/* saa7164-cards.c */
562extern struct saa7164_board saa7164_boards[];
563extern const unsigned int saa7164_bcount;
564
565extern struct saa7164_subid saa7164_subids[];
566extern const unsigned int saa7164_idcount;
567
568extern void saa7164_card_list(struct saa7164_dev *dev);
569extern void saa7164_gpio_setup(struct saa7164_dev *dev);
570extern void saa7164_card_setup(struct saa7164_dev *dev);
571
572extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
573extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
574extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
575
576/* ----------------------------------------------------------- */
577/* saa7164-dvb.c */
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578extern int saa7164_dvb_register(struct saa7164_port *port);
579extern int saa7164_dvb_unregister(struct saa7164_port *port);
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580
581/* ----------------------------------------------------------- */
582/* saa7164-buffer.c */
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583extern struct saa7164_buffer *saa7164_buffer_alloc(
584 struct saa7164_port *port, u32 len);
585extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
586extern void saa7164_buffer_display(struct saa7164_buffer *buf);
587extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
588extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
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589extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
590 struct saa7164_dev *dev, u32 len);
591extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
9230acaa 592extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
7615e434 593
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594/* ----------------------------------------------------------- */
595/* saa7164-encoder.c */
596int saa7164_encoder_register(struct saa7164_port *port);
597void saa7164_encoder_unregister(struct saa7164_port *port);
443c1228 598
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599/* ----------------------------------------------------------- */
600/* saa7164-vbi.c */
601int saa7164_vbi_register(struct saa7164_port *port);
602void saa7164_vbi_unregister(struct saa7164_port *port);
603
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604/* ----------------------------------------------------------- */
605
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606extern unsigned int crc_checking;
607
b1912a85 608extern unsigned int saa_debug;
443c1228 609#define dprintk(level, fmt, arg...)\
b1912a85 610 do { if (saa_debug & level)\
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611 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
612 } while (0)
613
614#define log_warn(fmt, arg...)\
615 do { \
616 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
617 } while (0)
618
443c1228 619#define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
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620#define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
621
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622#define saa7164_readb(reg) readl(dev->bmmio + (reg))
623#define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))
624