1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *  Driver for the NXP SAA7164 PCIe bridge
4  *
5  *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
6  */
7 
8 /*
9 	Driver architecture
10 	*******************
11 
12 	saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
13 		|	: Standard Linux driver framework for creating
14 		|	: exposing and managing interfaces to the rest
15 		|	: of the kernel or userland. Also uses _fw.c to load
16 		|	: firmware direct into the PCIe bus, bypassing layers.
17 		V
18 	saa7164_api..()	: Translate kernel specific functions/features
19 		|	: into command buffers.
20 		V
21 	saa7164_cmd..()	: Manages the flow of command packets on/off,
22 		|	: the bus. Deal with bus errors, timeouts etc.
23 		V
24 	saa7164_bus..() : Manage a read/write memory ring buffer in the
25 		|	: PCIe Address space.
26 		|
27 		|		saa7164_fw...()	: Load any firmware
28 		|			|	: direct into the device
29 		V			V
30 	<- ----------------- PCIe address space -------------------- ->
31 */
32 
33 #include <linux/pci.h>
34 #include <linux/i2c.h>
35 #include <linux/kdev_t.h>
36 #include <linux/mutex.h>
37 #include <linux/crc32.h>
38 #include <linux/kthread.h>
39 #include <linux/freezer.h>
40 
41 #include <media/tuner.h>
42 #include <media/tveeprom.h>
43 #include <media/dvb_demux.h>
44 #include <media/dvb_frontend.h>
45 #include <media/dvb_net.h>
46 #include <media/dvbdev.h>
47 #include <media/dmxdev.h>
48 #include <media/v4l2-common.h>
49 #include <media/v4l2-ioctl.h>
50 #include <media/v4l2-device.h>
51 #include <media/v4l2-ctrls.h>
52 #include <media/v4l2-event.h>
53 
54 #include "saa7164-reg.h"
55 #include "saa7164-types.h"
56 
57 #define SAA7164_MAXBOARDS 8
58 
59 #define UNSET (-1U)
60 #define SAA7164_BOARD_NOAUTO			UNSET
61 #define SAA7164_BOARD_UNKNOWN			0
62 #define SAA7164_BOARD_UNKNOWN_REV2		1
63 #define SAA7164_BOARD_UNKNOWN_REV3		2
64 #define SAA7164_BOARD_HAUPPAUGE_HVR2250		3
65 #define SAA7164_BOARD_HAUPPAUGE_HVR2200		4
66 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2	5
67 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3	6
68 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2	7
69 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3	8
70 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_4	9
71 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_5	10
72 #define SAA7164_BOARD_HAUPPAUGE_HVR2255proto	11
73 #define SAA7164_BOARD_HAUPPAUGE_HVR2255		12
74 #define SAA7164_BOARD_HAUPPAUGE_HVR2205		13
75 
76 #define SAA7164_MAX_UNITS		8
77 #define SAA7164_TS_NUMBER_OF_LINES	312
78 #define SAA7164_PS_NUMBER_OF_LINES	256
79 #define SAA7164_PT_ENTRIES		16 /* (312 * 188) / 4096 */
80 #define SAA7164_MAX_ENCODER_BUFFERS	64 /* max 5secs of latency at 6Mbps */
81 #define SAA7164_MAX_VBI_BUFFERS		64
82 
83 /* Port related defines */
84 #define SAA7164_PORT_TS1	(0)
85 #define SAA7164_PORT_TS2	(SAA7164_PORT_TS1 + 1)
86 #define SAA7164_PORT_ENC1	(SAA7164_PORT_TS2 + 1)
87 #define SAA7164_PORT_ENC2	(SAA7164_PORT_ENC1 + 1)
88 #define SAA7164_PORT_VBI1	(SAA7164_PORT_ENC2 + 1)
89 #define SAA7164_PORT_VBI2	(SAA7164_PORT_VBI1 + 1)
90 #define SAA7164_MAX_PORTS	(SAA7164_PORT_VBI2 + 1)
91 
92 #define DBGLVL_FW    4
93 #define DBGLVL_DVB   8
94 #define DBGLVL_I2C  16
95 #define DBGLVL_API  32
96 #define DBGLVL_CMD  64
97 #define DBGLVL_BUS 128
98 #define DBGLVL_IRQ 256
99 #define DBGLVL_BUF 512
100 #define DBGLVL_ENC 1024
101 #define DBGLVL_VBI 2048
102 #define DBGLVL_THR 4096
103 #define DBGLVL_CPU 8192
104 
105 #define SAA7164_NORMS \
106 	(V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)
107 
108 /* TV frequency range copied from tuner-core.c */
109 #define SAA7164_TV_MIN_FREQ (44U * 16U)
110 #define SAA7164_TV_MAX_FREQ (958U * 16U)
111 
112 enum port_t {
113 	SAA7164_MPEG_UNDEFINED = 0,
114 	SAA7164_MPEG_DVB,
115 	SAA7164_MPEG_ENCODER,
116 	SAA7164_MPEG_VBI,
117 };
118 
119 enum saa7164_i2c_bus_nr {
120 	SAA7164_I2C_BUS_0 = 0,
121 	SAA7164_I2C_BUS_1,
122 	SAA7164_I2C_BUS_2,
123 };
124 
125 enum saa7164_buffer_flags {
126 	SAA7164_BUFFER_UNDEFINED = 0,
127 	SAA7164_BUFFER_FREE,
128 	SAA7164_BUFFER_BUSY,
129 	SAA7164_BUFFER_FULL
130 };
131 
132 enum saa7164_unit_type {
133 	SAA7164_UNIT_UNDEFINED = 0,
134 	SAA7164_UNIT_DIGITAL_DEMODULATOR,
135 	SAA7164_UNIT_ANALOG_DEMODULATOR,
136 	SAA7164_UNIT_TUNER,
137 	SAA7164_UNIT_EEPROM,
138 	SAA7164_UNIT_ZILOG_IRBLASTER,
139 	SAA7164_UNIT_ENCODER,
140 };
141 
142 /* The PCIe bridge doesn't grant direct access to i2c.
143  * Instead, you address i2c devices using a uniqely
144  * allocated 'unitid' value via a messaging API. This
145  * is a problem. The kernel and existing demod/tuner
146  * drivers expect to talk 'i2c', so we have to maintain
147  * a translation layer, and a series of functions to
148  * convert i2c bus + device address into a unit id.
149  */
150 struct saa7164_unit {
151 	enum saa7164_unit_type type;
152 	u8	id;
153 	char	*name;
154 	enum saa7164_i2c_bus_nr i2c_bus_nr;
155 	u8	i2c_bus_addr;
156 	u8	i2c_reg_len;
157 };
158 
159 struct saa7164_board {
160 	char	*name;
161 	enum port_t porta, portb, portc,
162 		portd, porte, portf;
163 	enum {
164 		SAA7164_CHIP_UNDEFINED = 0,
165 		SAA7164_CHIP_REV2,
166 		SAA7164_CHIP_REV3,
167 	} chiprev;
168 	struct	saa7164_unit unit[SAA7164_MAX_UNITS];
169 };
170 
171 struct saa7164_subid {
172 	u16     subvendor;
173 	u16     subdevice;
174 	u32     card;
175 };
176 
177 struct saa7164_encoder_fh {
178 	struct v4l2_fh fh;
179 	struct saa7164_port *port;
180 	atomic_t v4l_reading;
181 };
182 
183 struct saa7164_vbi_fh {
184 	struct v4l2_fh fh;
185 	struct saa7164_port *port;
186 	atomic_t v4l_reading;
187 };
188 
189 struct saa7164_histogram_bucket {
190 	u32 val;
191 	u32 count;
192 	u64 update_time;
193 };
194 
195 struct saa7164_histogram {
196 	char name[32];
197 	struct saa7164_histogram_bucket counter1[64];
198 };
199 
200 struct saa7164_user_buffer {
201 	struct list_head list;
202 
203 	/* Attributes */
204 	u8  *data;
205 	u32 pos;
206 	u32 actual_size;
207 
208 	u32 crc;
209 };
210 
211 struct saa7164_fw_status {
212 
213 	/* RISC Core details */
214 	u32	status;
215 	u32	mode;
216 	u32	spec;
217 	u32	inst;
218 	u32	cpuload;
219 	u32	remainheap;
220 
221 	/* Firmware version */
222 	u32	version;
223 	u32	major;
224 	u32	sub;
225 	u32	rel;
226 	u32	buildnr;
227 };
228 
229 struct saa7164_dvb {
230 	struct mutex lock;
231 	struct dvb_adapter adapter;
232 	struct dvb_frontend *frontend;
233 	struct dvb_demux demux;
234 	struct dmxdev dmxdev;
235 	struct dmx_frontend fe_hw;
236 	struct dmx_frontend fe_mem;
237 	struct dvb_net net;
238 	int feeding;
239 };
240 
241 struct saa7164_i2c {
242 	struct saa7164_dev		*dev;
243 
244 	enum saa7164_i2c_bus_nr		nr;
245 
246 	/* I2C I/O */
247 	struct i2c_adapter		i2c_adap;
248 	struct i2c_client		i2c_client;
249 	u32				i2c_rc;
250 };
251 
252 struct saa7164_tvnorm {
253 	char		*name;
254 	v4l2_std_id	id;
255 };
256 
257 struct saa7164_encoder_params {
258 	struct saa7164_tvnorm encodernorm;
259 	u32 height;
260 	u32 width;
261 	u32 is_50hz;
262 	u32 bitrate; /* bps */
263 	u32 bitrate_peak; /* bps */
264 	u32 bitrate_mode;
265 	u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
266 
267 	u32 audio_sampling_freq;
268 	u32 ctl_mute;
269 	u32 ctl_aspect;
270 	u32 refdist;
271 	u32 gop_size;
272 };
273 
274 struct saa7164_vbi_params {
275 	struct saa7164_tvnorm encodernorm;
276 	u32 height;
277 	u32 width;
278 	u32 is_50hz;
279 	u32 bitrate; /* bps */
280 	u32 bitrate_peak; /* bps */
281 	u32 bitrate_mode;
282 	u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
283 
284 	u32 audio_sampling_freq;
285 	u32 ctl_mute;
286 	u32 ctl_aspect;
287 	u32 refdist;
288 	u32 gop_size;
289 };
290 
291 struct saa7164_port;
292 
293 struct saa7164_buffer {
294 	struct list_head list;
295 
296 	/* Note of which h/w buffer list index position we occupy */
297 	int idx;
298 
299 	struct saa7164_port *port;
300 
301 	/* Hardware Specific */
302 	/* PCI Memory allocations */
303 	enum saa7164_buffer_flags flags; /* Free, Busy, Full */
304 
305 	/* A block of page align PCI memory */
306 	u32 pci_size;	/* PCI allocation size in bytes */
307 	u64 *cpu;	/* Virtual address */
308 	dma_addr_t dma;	/* Physical address */
309 	u32 crc;	/* Checksum for the entire buffer data */
310 
311 	/* A page table that splits the block into a number of entries */
312 	u32 pt_size;		/* PCI allocation size in bytes */
313 	u64 *pt_cpu;		/* Virtual address */
314 	dma_addr_t pt_dma;	/* Physical address */
315 
316 	/* Encoder fops */
317 	u32 pos;
318 	u32 actual_size;
319 };
320 
321 struct saa7164_port {
322 
323 	struct saa7164_dev *dev;
324 	enum port_t type;
325 	int nr;
326 
327 	/* --- Generic port attributes --- */
328 
329 	/* HW stream parameters */
330 	struct tmHWStreamParameters hw_streamingparams;
331 
332 	/* DMA configuration values, is seeded during initialization */
333 	struct tmComResDMATermDescrHeader hwcfg;
334 
335 	/* hardware specific registers */
336 	u32 bufcounter;
337 	u32 pitch;
338 	u32 bufsize;
339 	u32 bufoffset;
340 	u32 bufptr32l;
341 	u32 bufptr32h;
342 	u64 bufptr64;
343 
344 	u32 numpte;	/* Number of entries in array, only valid in head */
345 
346 	struct mutex dmaqueue_lock;
347 	struct saa7164_buffer dmaqueue;
348 
349 	u64 last_irq_msecs, last_svc_msecs;
350 	u64 last_irq_msecs_diff, last_svc_msecs_diff;
351 	u32 last_svc_wp;
352 	u32 last_svc_rp;
353 	u64 last_irq_svc_msecs_diff;
354 	u64 last_read_msecs, last_read_msecs_diff;
355 	u64 last_poll_msecs, last_poll_msecs_diff;
356 
357 	struct saa7164_histogram irq_interval;
358 	struct saa7164_histogram svc_interval;
359 	struct saa7164_histogram irq_svc_interval;
360 	struct saa7164_histogram read_interval;
361 	struct saa7164_histogram poll_interval;
362 
363 	/* --- DVB Transport Specific --- */
364 	struct saa7164_dvb dvb;
365 	struct i2c_client *i2c_client_demod;
366 	struct i2c_client *i2c_client_tuner;
367 
368 	/* --- Encoder/V4L related attributes --- */
369 	/* Encoder */
370 	/* Defaults established in saa7164-encoder.c */
371 	struct saa7164_tvnorm encodernorm;
372 	struct v4l2_ctrl_handler ctrl_handler;
373 	v4l2_std_id std;
374 	u32 height;
375 	u32 width;
376 	u32 freq;
377 	u8 mux_input;
378 	u8 encoder_profile;
379 	u8 video_format;
380 	u8 audio_format;
381 	u8 video_resolution;
382 	u16 ctl_brightness;
383 	u16 ctl_contrast;
384 	u16 ctl_hue;
385 	u16 ctl_saturation;
386 	u16 ctl_sharpness;
387 	s8 ctl_volume;
388 
389 	struct tmComResAFeatureDescrHeader audfeat;
390 	struct tmComResEncoderDescrHeader encunit;
391 	struct tmComResProcDescrHeader vidproc;
392 	struct tmComResExtDevDescrHeader ifunit;
393 	struct tmComResTunerDescrHeader tunerunit;
394 
395 	struct work_struct workenc;
396 
397 	/* V4L Encoder Video */
398 	struct saa7164_encoder_params encoder_params;
399 	struct video_device *v4l_device;
400 	atomic_t v4l_reader_count;
401 
402 	struct saa7164_buffer list_buf_used;
403 	struct saa7164_buffer list_buf_free;
404 	wait_queue_head_t wait_read;
405 
406 	/* V4L VBI */
407 	struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
408 	struct saa7164_vbi_params vbi_params;
409 	struct saa7164_port *enc_port;
410 
411 	/* Debug */
412 	u32 sync_errors;
413 	u32 v_cc_errors;
414 	u32 a_cc_errors;
415 	u8 last_v_cc;
416 	u8 last_a_cc;
417 	u32 done_first_interrupt;
418 };
419 
420 struct saa7164_dev {
421 	struct list_head	devlist;
422 	atomic_t		refcount;
423 
424 	struct v4l2_device v4l2_dev;
425 
426 	/* pci stuff */
427 	struct pci_dev	*pci;
428 	unsigned char	pci_rev, pci_lat;
429 	int		pci_bus, pci_slot;
430 	u32		__iomem *lmmio;
431 	u8		__iomem *bmmio;
432 	u32		__iomem *lmmio2;
433 	u8		__iomem *bmmio2;
434 	int		pci_irqmask;
435 
436 	/* board details */
437 	int	nr;
438 	int	hwrevision;
439 	u32	board;
440 	char	name[16];
441 
442 	/* firmware status */
443 	struct saa7164_fw_status	fw_status;
444 	u32				firmwareloaded;
445 
446 	struct tmComResHWDescr		hwdesc;
447 	struct tmComResInterfaceDescr	intfdesc;
448 	struct tmComResBusDescr		busdesc;
449 
450 	struct tmComResBusInfo		bus;
451 
452 	/* Interrupt status and ack registers */
453 	u32 int_status;
454 	u32 int_ack;
455 	bool msi;
456 
457 	struct cmd			cmds[SAA_CMD_MAX_MSG_UNITS];
458 	struct mutex			lock;
459 
460 	/* I2c related */
461 	struct saa7164_i2c i2c_bus[3];
462 
463 	/* Transport related */
464 	struct saa7164_port ports[SAA7164_MAX_PORTS];
465 
466 	/* Deferred command/api interrupts handling */
467 	struct work_struct workcmd;
468 
469 	/* A kernel thread to monitor the firmware log, used
470 	 * only in debug mode.
471 	 */
472 	struct task_struct *kthread;
473 
474 };
475 
476 extern struct list_head saa7164_devlist;
477 extern unsigned int waitsecs;
478 extern unsigned int encoder_buffers;
479 extern unsigned int vbi_buffers;
480 
481 /* ----------------------------------------------------------- */
482 /* saa7164-core.c                                              */
483 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
484 void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
485 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
486 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
487 
488 /* ----------------------------------------------------------- */
489 /* saa7164-fw.c                                                */
490 int saa7164_downloadfirmware(struct saa7164_dev *dev);
491 
492 /* ----------------------------------------------------------- */
493 /* saa7164-i2c.c                                               */
494 extern int saa7164_i2c_register(struct saa7164_i2c *bus);
495 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
496 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
497 	unsigned int cmd, void *arg);
498 
499 /* ----------------------------------------------------------- */
500 /* saa7164-bus.c                                               */
501 int saa7164_bus_setup(struct saa7164_dev *dev);
502 void saa7164_bus_dump(struct saa7164_dev *dev);
503 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
504 	void *buf);
505 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
506 	void *buf, int peekonly);
507 
508 /* ----------------------------------------------------------- */
509 /* saa7164-cmd.c                                               */
510 int saa7164_cmd_send(struct saa7164_dev *dev,
511 	u8 id, enum tmComResCmd command, u16 controlselector,
512 	u16 size, void *buf);
513 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
514 int saa7164_irq_dequeue(struct saa7164_dev *dev);
515 
516 /* ----------------------------------------------------------- */
517 /* saa7164-api.c                                               */
518 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
519 int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
520 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
521 	u32 datalen, u8 *data);
522 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
523 	u32 datalen, u8 *data);
524 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
525 	u32 datalen, u8 *data);
526 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
527 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
528 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
529 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
530 int saa7164_api_initialize_dif(struct saa7164_port *port);
531 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
532 int saa7164_api_set_encoder(struct saa7164_port *port);
533 int saa7164_api_get_encoder(struct saa7164_port *port);
534 int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
535 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
536 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
537 int saa7164_api_set_videomux(struct saa7164_port *port);
538 int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
539 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
540 int saa7164_api_set_audio_std(struct saa7164_port *port);
541 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
542 int saa7164_api_get_videomux(struct saa7164_port *port);
543 int saa7164_api_set_vbi_format(struct saa7164_port *port);
544 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
545 int saa7164_api_collect_debug(struct saa7164_dev *dev);
546 int saa7164_api_get_load_info(struct saa7164_dev *dev,
547 	struct tmFwInfoStruct *i);
548 
549 /* ----------------------------------------------------------- */
550 /* saa7164-cards.c                                             */
551 extern struct saa7164_board saa7164_boards[];
552 extern const unsigned int saa7164_bcount;
553 
554 extern struct saa7164_subid saa7164_subids[];
555 extern const unsigned int saa7164_idcount;
556 
557 extern void saa7164_card_list(struct saa7164_dev *dev);
558 extern void saa7164_gpio_setup(struct saa7164_dev *dev);
559 extern void saa7164_card_setup(struct saa7164_dev *dev);
560 
561 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
562 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
563 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
564 
565 /* ----------------------------------------------------------- */
566 /* saa7164-dvb.c                                               */
567 extern int saa7164_dvb_register(struct saa7164_port *port);
568 extern int saa7164_dvb_unregister(struct saa7164_port *port);
569 
570 /* ----------------------------------------------------------- */
571 /* saa7164-buffer.c                                            */
572 extern struct saa7164_buffer *saa7164_buffer_alloc(
573 	struct saa7164_port *port, u32 len);
574 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
575 extern void saa7164_buffer_display(struct saa7164_buffer *buf);
576 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
577 extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
578 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
579 	struct saa7164_dev *dev, u32 len);
580 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
581 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
582 
583 /* ----------------------------------------------------------- */
584 /* saa7164-encoder.c                                            */
585 int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);
586 int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);
587 int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);
588 int saa7164_g_input(struct saa7164_port *port, unsigned int *i);
589 int saa7164_s_input(struct saa7164_port *port, unsigned int i);
590 int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
591 int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);
592 int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);
593 int saa7164_s_frequency(struct saa7164_port *port,
594 			const struct v4l2_frequency *f);
595 int saa7164_encoder_register(struct saa7164_port *port);
596 void saa7164_encoder_unregister(struct saa7164_port *port);
597 
598 /* ----------------------------------------------------------- */
599 /* saa7164-vbi.c                                            */
600 int saa7164_vbi_register(struct saa7164_port *port);
601 void saa7164_vbi_unregister(struct saa7164_port *port);
602 
603 /* ----------------------------------------------------------- */
604 
605 extern unsigned int crc_checking;
606 
607 extern unsigned int saa_debug;
608 #define dprintk(level, fmt, arg...)\
609 	do { if (saa_debug & level)\
610 		printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
611 	} while (0)
612 
613 #define log_warn(fmt, arg...)\
614 	do { \
615 		printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
616 	} while (0)
617 
618 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
619 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
620 
621 #define saa7164_readb(reg)             readl(dev->bmmio + (reg))
622 #define saa7164_writeb(reg, value)     writel((value), dev->bmmio + (reg))
623 
624