1 /*
2  *  Driver for the NXP SAA7164 PCIe bridge
3  *
4  *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
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 
18 /*
19 	Driver architecture
20 	*******************
21 
22 	saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
23 		|	: Standard Linux driver framework for creating
24 		|	: exposing and managing interfaces to the rest
25 		|	: of the kernel or userland. Also uses _fw.c to load
26 		|	: firmware direct into the PCIe bus, bypassing layers.
27 		V
28 	saa7164_api..()	: Translate kernel specific functions/features
29 		|	: into command buffers.
30 		V
31 	saa7164_cmd..()	: Manages the flow of command packets on/off,
32 		|	: the bus. Deal with bus errors, timeouts etc.
33 		V
34 	saa7164_bus..() : Manage a read/write memory ring buffer in the
35 		|	: PCIe Address space.
36 		|
37 		|		saa7164_fw...()	: Load any frimware
38 		|			|	: direct into the device
39 		V			V
40 	<- ----------------- PCIe address space -------------------- ->
41 */
42 
43 #include <linux/pci.h>
44 #include <linux/i2c.h>
45 #include <linux/kdev_t.h>
46 #include <linux/mutex.h>
47 #include <linux/crc32.h>
48 #include <linux/kthread.h>
49 #include <linux/freezer.h>
50 
51 #include <media/tuner.h>
52 #include <media/tveeprom.h>
53 #include <dvb_demux.h>
54 #include <dvb_frontend.h>
55 #include <dvb_net.h>
56 #include <dvbdev.h>
57 #include <dmxdev.h>
58 #include <media/v4l2-common.h>
59 #include <media/v4l2-ioctl.h>
60 #include <media/v4l2-device.h>
61 #include <media/v4l2-ctrls.h>
62 #include <media/v4l2-event.h>
63 
64 #include "saa7164-reg.h"
65 #include "saa7164-types.h"
66 
67 #define SAA7164_MAXBOARDS 8
68 
69 #define UNSET (-1U)
70 #define SAA7164_BOARD_NOAUTO			UNSET
71 #define SAA7164_BOARD_UNKNOWN			0
72 #define SAA7164_BOARD_UNKNOWN_REV2		1
73 #define SAA7164_BOARD_UNKNOWN_REV3		2
74 #define SAA7164_BOARD_HAUPPAUGE_HVR2250		3
75 #define SAA7164_BOARD_HAUPPAUGE_HVR2200		4
76 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2	5
77 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3	6
78 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2	7
79 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3	8
80 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_4	9
81 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_5	10
82 #define SAA7164_BOARD_HAUPPAUGE_HVR2255proto	11
83 #define SAA7164_BOARD_HAUPPAUGE_HVR2255		12
84 #define SAA7164_BOARD_HAUPPAUGE_HVR2205		13
85 
86 #define SAA7164_MAX_UNITS		8
87 #define SAA7164_TS_NUMBER_OF_LINES	312
88 #define SAA7164_PS_NUMBER_OF_LINES	256
89 #define SAA7164_PT_ENTRIES		16 /* (312 * 188) / 4096 */
90 #define SAA7164_MAX_ENCODER_BUFFERS	64 /* max 5secs of latency at 6Mbps */
91 #define SAA7164_MAX_VBI_BUFFERS		64
92 
93 /* Port related defines */
94 #define SAA7164_PORT_TS1	(0)
95 #define SAA7164_PORT_TS2	(SAA7164_PORT_TS1 + 1)
96 #define SAA7164_PORT_ENC1	(SAA7164_PORT_TS2 + 1)
97 #define SAA7164_PORT_ENC2	(SAA7164_PORT_ENC1 + 1)
98 #define SAA7164_PORT_VBI1	(SAA7164_PORT_ENC2 + 1)
99 #define SAA7164_PORT_VBI2	(SAA7164_PORT_VBI1 + 1)
100 #define SAA7164_MAX_PORTS	(SAA7164_PORT_VBI2 + 1)
101 
102 #define DBGLVL_FW    4
103 #define DBGLVL_DVB   8
104 #define DBGLVL_I2C  16
105 #define DBGLVL_API  32
106 #define DBGLVL_CMD  64
107 #define DBGLVL_BUS 128
108 #define DBGLVL_IRQ 256
109 #define DBGLVL_BUF 512
110 #define DBGLVL_ENC 1024
111 #define DBGLVL_VBI 2048
112 #define DBGLVL_THR 4096
113 #define DBGLVL_CPU 8192
114 
115 #define SAA7164_NORMS \
116 	(V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)
117 
118 /* TV frequency range copied from tuner-core.c */
119 #define SAA7164_TV_MIN_FREQ (44U * 16U)
120 #define SAA7164_TV_MAX_FREQ (958U * 16U)
121 
122 enum port_t {
123 	SAA7164_MPEG_UNDEFINED = 0,
124 	SAA7164_MPEG_DVB,
125 	SAA7164_MPEG_ENCODER,
126 	SAA7164_MPEG_VBI,
127 };
128 
129 enum saa7164_i2c_bus_nr {
130 	SAA7164_I2C_BUS_0 = 0,
131 	SAA7164_I2C_BUS_1,
132 	SAA7164_I2C_BUS_2,
133 };
134 
135 enum saa7164_buffer_flags {
136 	SAA7164_BUFFER_UNDEFINED = 0,
137 	SAA7164_BUFFER_FREE,
138 	SAA7164_BUFFER_BUSY,
139 	SAA7164_BUFFER_FULL
140 };
141 
142 enum 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  */
160 struct 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 
169 struct saa7164_board {
170 	char	*name;
171 	enum port_t porta, portb, portc,
172 		portd, porte, portf;
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 
181 struct saa7164_subid {
182 	u16     subvendor;
183 	u16     subdevice;
184 	u32     card;
185 };
186 
187 struct saa7164_encoder_fh {
188 	struct v4l2_fh fh;
189 	struct saa7164_port *port;
190 	atomic_t v4l_reading;
191 };
192 
193 struct saa7164_vbi_fh {
194 	struct v4l2_fh fh;
195 	struct saa7164_port *port;
196 	atomic_t v4l_reading;
197 };
198 
199 struct saa7164_histogram_bucket {
200 	u32 val;
201 	u32 count;
202 	u64 update_time;
203 };
204 
205 struct saa7164_histogram {
206 	char name[32];
207 	struct saa7164_histogram_bucket counter1[64];
208 };
209 
210 struct saa7164_user_buffer {
211 	struct list_head list;
212 
213 	/* Attributes */
214 	u8  *data;
215 	u32 pos;
216 	u32 actual_size;
217 
218 	u32 crc;
219 };
220 
221 struct saa7164_fw_status {
222 
223 	/* RISC Core details */
224 	u32	status;
225 	u32	mode;
226 	u32	spec;
227 	u32	inst;
228 	u32	cpuload;
229 	u32	remainheap;
230 
231 	/* Firmware version */
232 	u32	version;
233 	u32	major;
234 	u32	sub;
235 	u32	rel;
236 	u32	buildnr;
237 };
238 
239 struct saa7164_dvb {
240 	struct mutex lock;
241 	struct dvb_adapter adapter;
242 	struct dvb_frontend *frontend;
243 	struct dvb_demux demux;
244 	struct dmxdev dmxdev;
245 	struct dmx_frontend fe_hw;
246 	struct dmx_frontend fe_mem;
247 	struct dvb_net net;
248 	int feeding;
249 };
250 
251 struct saa7164_i2c {
252 	struct saa7164_dev		*dev;
253 
254 	enum saa7164_i2c_bus_nr		nr;
255 
256 	/* I2C I/O */
257 	struct i2c_adapter		i2c_adap;
258 	struct i2c_client		i2c_client;
259 	u32				i2c_rc;
260 };
261 
262 struct saa7164_tvnorm {
263 	char		*name;
264 	v4l2_std_id	id;
265 };
266 
267 struct saa7164_encoder_params {
268 	struct saa7164_tvnorm encodernorm;
269 	u32 height;
270 	u32 width;
271 	u32 is_50hz;
272 	u32 bitrate; /* bps */
273 	u32 bitrate_peak; /* bps */
274 	u32 bitrate_mode;
275 	u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
276 
277 	u32 audio_sampling_freq;
278 	u32 ctl_mute;
279 	u32 ctl_aspect;
280 	u32 refdist;
281 	u32 gop_size;
282 };
283 
284 struct saa7164_vbi_params {
285 	struct saa7164_tvnorm encodernorm;
286 	u32 height;
287 	u32 width;
288 	u32 is_50hz;
289 	u32 bitrate; /* bps */
290 	u32 bitrate_peak; /* bps */
291 	u32 bitrate_mode;
292 	u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
293 
294 	u32 audio_sampling_freq;
295 	u32 ctl_mute;
296 	u32 ctl_aspect;
297 	u32 refdist;
298 	u32 gop_size;
299 };
300 
301 struct saa7164_port;
302 
303 struct saa7164_buffer {
304 	struct list_head list;
305 
306 	/* Note of which h/w buffer list index position we occupy */
307 	int idx;
308 
309 	struct saa7164_port *port;
310 
311 	/* Hardware Specific */
312 	/* PCI Memory allocations */
313 	enum saa7164_buffer_flags flags; /* Free, Busy, Full */
314 
315 	/* A block of page align PCI memory */
316 	u32 pci_size;	/* PCI allocation size in bytes */
317 	u64 *cpu;	/* Virtual address */
318 	dma_addr_t dma;	/* Physical address */
319 	u32 crc;	/* Checksum for the entire buffer data */
320 
321 	/* A page table that splits the block into a number of entries */
322 	u32 pt_size;		/* PCI allocation size in bytes */
323 	u64 *pt_cpu;		/* Virtual address */
324 	dma_addr_t pt_dma;	/* Physical address */
325 
326 	/* Encoder fops */
327 	u32 pos;
328 	u32 actual_size;
329 };
330 
331 struct saa7164_port {
332 
333 	struct saa7164_dev *dev;
334 	enum port_t type;
335 	int nr;
336 
337 	/* --- Generic port attributes --- */
338 
339 	/* HW stream parameters */
340 	struct tmHWStreamParameters hw_streamingparams;
341 
342 	/* DMA configuration values, is seeded during initialization */
343 	struct tmComResDMATermDescrHeader hwcfg;
344 
345 	/* hardware specific registers */
346 	u32 bufcounter;
347 	u32 pitch;
348 	u32 bufsize;
349 	u32 bufoffset;
350 	u32 bufptr32l;
351 	u32 bufptr32h;
352 	u64 bufptr64;
353 
354 	u32 numpte;	/* Number of entries in array, only valid in head */
355 
356 	struct mutex dmaqueue_lock;
357 	struct saa7164_buffer dmaqueue;
358 
359 	u64 last_irq_msecs, last_svc_msecs;
360 	u64 last_irq_msecs_diff, last_svc_msecs_diff;
361 	u32 last_svc_wp;
362 	u32 last_svc_rp;
363 	u64 last_irq_svc_msecs_diff;
364 	u64 last_read_msecs, last_read_msecs_diff;
365 	u64 last_poll_msecs, last_poll_msecs_diff;
366 
367 	struct saa7164_histogram irq_interval;
368 	struct saa7164_histogram svc_interval;
369 	struct saa7164_histogram irq_svc_interval;
370 	struct saa7164_histogram read_interval;
371 	struct saa7164_histogram poll_interval;
372 
373 	/* --- DVB Transport Specific --- */
374 	struct saa7164_dvb dvb;
375 	struct i2c_client *i2c_client_demod;
376 	struct i2c_client *i2c_client_tuner;
377 
378 	/* --- Encoder/V4L related attributes --- */
379 	/* Encoder */
380 	/* Defaults established in saa7164-encoder.c */
381 	struct saa7164_tvnorm encodernorm;
382 	struct v4l2_ctrl_handler ctrl_handler;
383 	v4l2_std_id std;
384 	u32 height;
385 	u32 width;
386 	u32 freq;
387 	u8 mux_input;
388 	u8 encoder_profile;
389 	u8 video_format;
390 	u8 audio_format;
391 	u8 video_resolution;
392 	u16 ctl_brightness;
393 	u16 ctl_contrast;
394 	u16 ctl_hue;
395 	u16 ctl_saturation;
396 	u16 ctl_sharpness;
397 	s8 ctl_volume;
398 
399 	struct tmComResAFeatureDescrHeader audfeat;
400 	struct tmComResEncoderDescrHeader encunit;
401 	struct tmComResProcDescrHeader vidproc;
402 	struct tmComResExtDevDescrHeader ifunit;
403 	struct tmComResTunerDescrHeader tunerunit;
404 
405 	struct work_struct workenc;
406 
407 	/* V4L Encoder Video */
408 	struct saa7164_encoder_params encoder_params;
409 	struct video_device *v4l_device;
410 	atomic_t v4l_reader_count;
411 
412 	struct saa7164_buffer list_buf_used;
413 	struct saa7164_buffer list_buf_free;
414 	wait_queue_head_t wait_read;
415 
416 	/* V4L VBI */
417 	struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
418 	struct saa7164_vbi_params vbi_params;
419 	struct saa7164_port *enc_port;
420 
421 	/* Debug */
422 	u32 sync_errors;
423 	u32 v_cc_errors;
424 	u32 a_cc_errors;
425 	u8 last_v_cc;
426 	u8 last_a_cc;
427 	u32 done_first_interrupt;
428 };
429 
430 struct saa7164_dev {
431 	struct list_head	devlist;
432 	atomic_t		refcount;
433 
434 	struct v4l2_device v4l2_dev;
435 
436 	/* pci stuff */
437 	struct pci_dev	*pci;
438 	unsigned char	pci_rev, pci_lat;
439 	int		pci_bus, pci_slot;
440 	u32		__iomem *lmmio;
441 	u8		__iomem *bmmio;
442 	u32		__iomem *lmmio2;
443 	u8		__iomem *bmmio2;
444 	int		pci_irqmask;
445 
446 	/* board details */
447 	int	nr;
448 	int	hwrevision;
449 	u32	board;
450 	char	name[16];
451 
452 	/* firmware status */
453 	struct saa7164_fw_status	fw_status;
454 	u32				firmwareloaded;
455 
456 	struct tmComResHWDescr		hwdesc;
457 	struct tmComResInterfaceDescr	intfdesc;
458 	struct tmComResBusDescr		busdesc;
459 
460 	struct tmComResBusInfo		bus;
461 
462 	/* Interrupt status and ack registers */
463 	u32 int_status;
464 	u32 int_ack;
465 	bool msi;
466 
467 	struct cmd			cmds[SAA_CMD_MAX_MSG_UNITS];
468 	struct mutex			lock;
469 
470 	/* I2c related */
471 	struct saa7164_i2c i2c_bus[3];
472 
473 	/* Transport related */
474 	struct saa7164_port ports[SAA7164_MAX_PORTS];
475 
476 	/* Deferred command/api interrupts handling */
477 	struct work_struct workcmd;
478 
479 	/* A kernel thread to monitor the firmware log, used
480 	 * only in debug mode.
481 	 */
482 	struct task_struct *kthread;
483 
484 };
485 
486 extern struct list_head saa7164_devlist;
487 extern unsigned int waitsecs;
488 extern unsigned int encoder_buffers;
489 extern unsigned int vbi_buffers;
490 
491 /* ----------------------------------------------------------- */
492 /* saa7164-core.c                                              */
493 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
494 void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
495 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
496 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
497 
498 /* ----------------------------------------------------------- */
499 /* saa7164-fw.c                                                */
500 int saa7164_downloadfirmware(struct saa7164_dev *dev);
501 
502 /* ----------------------------------------------------------- */
503 /* saa7164-i2c.c                                               */
504 extern int saa7164_i2c_register(struct saa7164_i2c *bus);
505 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
506 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
507 	unsigned int cmd, void *arg);
508 
509 /* ----------------------------------------------------------- */
510 /* saa7164-bus.c                                               */
511 int saa7164_bus_setup(struct saa7164_dev *dev);
512 void saa7164_bus_dump(struct saa7164_dev *dev);
513 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
514 	void *buf);
515 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
516 	void *buf, int peekonly);
517 
518 /* ----------------------------------------------------------- */
519 /* saa7164-cmd.c                                               */
520 int saa7164_cmd_send(struct saa7164_dev *dev,
521 	u8 id, enum tmComResCmd command, u16 controlselector,
522 	u16 size, void *buf);
523 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
524 int saa7164_irq_dequeue(struct saa7164_dev *dev);
525 
526 /* ----------------------------------------------------------- */
527 /* saa7164-api.c                                               */
528 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
529 int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
530 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
531 	u32 datalen, u8 *data);
532 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
533 	u32 datalen, u8 *data);
534 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
535 	u32 datalen, u8 *data);
536 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
537 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
538 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
539 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
540 int saa7164_api_initialize_dif(struct saa7164_port *port);
541 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
542 int saa7164_api_set_encoder(struct saa7164_port *port);
543 int saa7164_api_get_encoder(struct saa7164_port *port);
544 int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
545 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
546 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
547 int saa7164_api_set_videomux(struct saa7164_port *port);
548 int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
549 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
550 int saa7164_api_set_audio_std(struct saa7164_port *port);
551 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
552 int saa7164_api_get_videomux(struct saa7164_port *port);
553 int saa7164_api_set_vbi_format(struct saa7164_port *port);
554 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
555 int saa7164_api_collect_debug(struct saa7164_dev *dev);
556 int saa7164_api_get_load_info(struct saa7164_dev *dev,
557 	struct tmFwInfoStruct *i);
558 
559 /* ----------------------------------------------------------- */
560 /* saa7164-cards.c                                             */
561 extern struct saa7164_board saa7164_boards[];
562 extern const unsigned int saa7164_bcount;
563 
564 extern struct saa7164_subid saa7164_subids[];
565 extern const unsigned int saa7164_idcount;
566 
567 extern void saa7164_card_list(struct saa7164_dev *dev);
568 extern void saa7164_gpio_setup(struct saa7164_dev *dev);
569 extern void saa7164_card_setup(struct saa7164_dev *dev);
570 
571 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
572 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
573 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
574 
575 /* ----------------------------------------------------------- */
576 /* saa7164-dvb.c                                               */
577 extern int saa7164_dvb_register(struct saa7164_port *port);
578 extern int saa7164_dvb_unregister(struct saa7164_port *port);
579 
580 /* ----------------------------------------------------------- */
581 /* saa7164-buffer.c                                            */
582 extern struct saa7164_buffer *saa7164_buffer_alloc(
583 	struct saa7164_port *port, u32 len);
584 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
585 extern void saa7164_buffer_display(struct saa7164_buffer *buf);
586 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
587 extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
588 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
589 	struct saa7164_dev *dev, u32 len);
590 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
591 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
592 
593 /* ----------------------------------------------------------- */
594 /* saa7164-encoder.c                                            */
595 int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);
596 int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);
597 int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);
598 int saa7164_g_input(struct saa7164_port *port, unsigned int *i);
599 int saa7164_s_input(struct saa7164_port *port, unsigned int i);
600 int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
601 int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);
602 int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);
603 int saa7164_s_frequency(struct saa7164_port *port,
604 			const struct v4l2_frequency *f);
605 int saa7164_encoder_register(struct saa7164_port *port);
606 void saa7164_encoder_unregister(struct saa7164_port *port);
607 
608 /* ----------------------------------------------------------- */
609 /* saa7164-vbi.c                                            */
610 int saa7164_vbi_register(struct saa7164_port *port);
611 void saa7164_vbi_unregister(struct saa7164_port *port);
612 
613 /* ----------------------------------------------------------- */
614 
615 extern unsigned int crc_checking;
616 
617 extern unsigned int saa_debug;
618 #define dprintk(level, fmt, arg...)\
619 	do { if (saa_debug & level)\
620 		printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
621 	} while (0)
622 
623 #define log_warn(fmt, arg...)\
624 	do { \
625 		printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
626 	} while (0)
627 
628 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
629 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
630 
631 #define saa7164_readb(reg)             readl(dev->bmmio + (reg))
632 #define saa7164_writeb(reg, value)     writel((value), dev->bmmio + (reg))
633 
634