1 /*
2  *  Driver for the Conexant CX23885 PCIe bridge
3  *
4  *  Copyright (c) 2006 Steven Toth <stoth@linuxtv.org>
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 
20 #include <linux/pci.h>
21 #include <linux/i2c.h>
22 #include <linux/kdev_t.h>
23 #include <linux/slab.h>
24 
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-fh.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/tuner.h>
29 #include <media/tveeprom.h>
30 #include <media/videobuf2-dma-sg.h>
31 #include <media/videobuf2-dvb.h>
32 #include <media/rc-core.h>
33 
34 #include "cx23885-reg.h"
35 #include "media/drv-intf/cx2341x.h"
36 
37 #include <linux/mutex.h>
38 
39 #define CX23885_VERSION "0.0.4"
40 
41 #define UNSET (-1U)
42 
43 #define CX23885_MAXBOARDS 8
44 
45 /* Max number of inputs by card */
46 #define MAX_CX23885_INPUT 8
47 #define INPUT(nr) (&cx23885_boards[dev->board].input[nr])
48 
49 #define BUFFER_TIMEOUT     (HZ)  /* 0.5 seconds */
50 
51 #define CX23885_BOARD_NOAUTO               UNSET
52 #define CX23885_BOARD_UNKNOWN                  0
53 #define CX23885_BOARD_HAUPPAUGE_HVR1800lp      1
54 #define CX23885_BOARD_HAUPPAUGE_HVR1800        2
55 #define CX23885_BOARD_HAUPPAUGE_HVR1250        3
56 #define CX23885_BOARD_DVICO_FUSIONHDTV_5_EXP   4
57 #define CX23885_BOARD_HAUPPAUGE_HVR1500Q       5
58 #define CX23885_BOARD_HAUPPAUGE_HVR1500        6
59 #define CX23885_BOARD_HAUPPAUGE_HVR1200        7
60 #define CX23885_BOARD_HAUPPAUGE_HVR1700        8
61 #define CX23885_BOARD_HAUPPAUGE_HVR1400        9
62 #define CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP 10
63 #define CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP 11
64 #define CX23885_BOARD_LEADTEK_WINFAST_PXDVR3200_H 12
65 #define CX23885_BOARD_COMPRO_VIDEOMATE_E650F   13
66 #define CX23885_BOARD_TBS_6920                 14
67 #define CX23885_BOARD_TEVII_S470               15
68 #define CX23885_BOARD_DVBWORLD_2005            16
69 #define CX23885_BOARD_NETUP_DUAL_DVBS2_CI      17
70 #define CX23885_BOARD_HAUPPAUGE_HVR1270        18
71 #define CX23885_BOARD_HAUPPAUGE_HVR1275        19
72 #define CX23885_BOARD_HAUPPAUGE_HVR1255        20
73 #define CX23885_BOARD_HAUPPAUGE_HVR1210        21
74 #define CX23885_BOARD_MYGICA_X8506             22
75 #define CX23885_BOARD_MAGICPRO_PROHDTVE2       23
76 #define CX23885_BOARD_HAUPPAUGE_HVR1850        24
77 #define CX23885_BOARD_COMPRO_VIDEOMATE_E800    25
78 #define CX23885_BOARD_HAUPPAUGE_HVR1290        26
79 #define CX23885_BOARD_MYGICA_X8558PRO          27
80 #define CX23885_BOARD_LEADTEK_WINFAST_PXTV1200 28
81 #define CX23885_BOARD_GOTVIEW_X5_3D_HYBRID     29
82 #define CX23885_BOARD_NETUP_DUAL_DVB_T_C_CI_RF 30
83 #define CX23885_BOARD_LEADTEK_WINFAST_PXDVR3200_H_XC4000 31
84 #define CX23885_BOARD_MPX885                   32
85 #define CX23885_BOARD_MYGICA_X8507             33
86 #define CX23885_BOARD_TERRATEC_CINERGY_T_PCIE_DUAL 34
87 #define CX23885_BOARD_TEVII_S471               35
88 #define CX23885_BOARD_HAUPPAUGE_HVR1255_22111  36
89 #define CX23885_BOARD_PROF_8000                37
90 #define CX23885_BOARD_HAUPPAUGE_HVR4400        38
91 #define CX23885_BOARD_AVERMEDIA_HC81R          39
92 #define CX23885_BOARD_TBS_6981                 40
93 #define CX23885_BOARD_TBS_6980                 41
94 #define CX23885_BOARD_LEADTEK_WINFAST_PXPVR2200 42
95 #define CX23885_BOARD_HAUPPAUGE_IMPACTVCBE     43
96 #define CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP2 44
97 #define CX23885_BOARD_DVBSKY_T9580             45
98 #define CX23885_BOARD_DVBSKY_T980C             46
99 #define CX23885_BOARD_DVBSKY_S950C             47
100 #define CX23885_BOARD_TT_CT2_4500_CI           48
101 #define CX23885_BOARD_DVBSKY_S950              49
102 #define CX23885_BOARD_DVBSKY_S952              50
103 #define CX23885_BOARD_DVBSKY_T982              51
104 #define CX23885_BOARD_HAUPPAUGE_HVR5525        52
105 #define CX23885_BOARD_HAUPPAUGE_STARBURST      53
106 #define CX23885_BOARD_VIEWCAST_260E            54
107 #define CX23885_BOARD_VIEWCAST_460E            55
108 #define CX23885_BOARD_HAUPPAUGE_QUADHD_DVB     56
109 #define CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC    57
110 #define CX23885_BOARD_HAUPPAUGE_HVR1265_K4     58
111 #define CX23885_BOARD_HAUPPAUGE_STARBURST2     59
112 #define CX23885_BOARD_HAUPPAUGE_QUADHD_DVB_885 60
113 #define CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC_885 61
114 
115 #define GPIO_0 0x00000001
116 #define GPIO_1 0x00000002
117 #define GPIO_2 0x00000004
118 #define GPIO_3 0x00000008
119 #define GPIO_4 0x00000010
120 #define GPIO_5 0x00000020
121 #define GPIO_6 0x00000040
122 #define GPIO_7 0x00000080
123 #define GPIO_8 0x00000100
124 #define GPIO_9 0x00000200
125 #define GPIO_10 0x00000400
126 #define GPIO_11 0x00000800
127 #define GPIO_12 0x00001000
128 #define GPIO_13 0x00002000
129 #define GPIO_14 0x00004000
130 #define GPIO_15 0x00008000
131 
132 /* Currently unsupported by the driver: PAL/H, NTSC/Kr, SECAM B/G/H/LC */
133 #define CX23885_NORMS (\
134 	V4L2_STD_NTSC_M |  V4L2_STD_NTSC_M_JP |  V4L2_STD_NTSC_443 | \
135 	V4L2_STD_PAL_BG |  V4L2_STD_PAL_DK    |  V4L2_STD_PAL_I    | \
136 	V4L2_STD_PAL_M  |  V4L2_STD_PAL_N     |  V4L2_STD_PAL_Nc   | \
137 	V4L2_STD_PAL_60 |  V4L2_STD_SECAM_L   |  V4L2_STD_SECAM_DK)
138 
139 struct cx23885_fmt {
140 	char  *name;
141 	u32   fourcc;          /* v4l2 format id */
142 	int   depth;
143 	int   flags;
144 	u32   cxformat;
145 };
146 
147 struct cx23885_tvnorm {
148 	char		*name;
149 	v4l2_std_id	id;
150 	u32		cxiformat;
151 	u32		cxoformat;
152 };
153 
154 enum cx23885_itype {
155 	CX23885_VMUX_COMPOSITE1 = 1,
156 	CX23885_VMUX_COMPOSITE2,
157 	CX23885_VMUX_COMPOSITE3,
158 	CX23885_VMUX_COMPOSITE4,
159 	CX23885_VMUX_SVIDEO,
160 	CX23885_VMUX_COMPONENT,
161 	CX23885_VMUX_TELEVISION,
162 	CX23885_VMUX_CABLE,
163 	CX23885_VMUX_DVB,
164 	CX23885_VMUX_DEBUG,
165 	CX23885_RADIO,
166 };
167 
168 enum cx23885_src_sel_type {
169 	CX23885_SRC_SEL_EXT_656_VIDEO = 0,
170 	CX23885_SRC_SEL_PARALLEL_MPEG_VIDEO
171 };
172 
173 struct cx23885_riscmem {
174 	unsigned int   size;
175 	__le32         *cpu;
176 	__le32         *jmp;
177 	dma_addr_t     dma;
178 };
179 
180 /* buffer for one video frame */
181 struct cx23885_buffer {
182 	/* common v4l buffer stuff -- must be first */
183 	struct vb2_v4l2_buffer vb;
184 	struct list_head queue;
185 
186 	/* cx23885 specific */
187 	unsigned int           bpl;
188 	struct cx23885_riscmem risc;
189 	struct cx23885_fmt     *fmt;
190 	u32                    count;
191 };
192 
193 struct cx23885_input {
194 	enum cx23885_itype type;
195 	unsigned int    vmux;
196 	unsigned int    amux;
197 	u32             gpio0, gpio1, gpio2, gpio3;
198 };
199 
200 typedef enum {
201 	CX23885_MPEG_UNDEFINED = 0,
202 	CX23885_MPEG_DVB,
203 	CX23885_ANALOG_VIDEO,
204 	CX23885_MPEG_ENCODER,
205 } port_t;
206 
207 struct cx23885_board {
208 	char                    *name;
209 	port_t			porta, portb, portc;
210 	int		num_fds_portb, num_fds_portc;
211 	unsigned int		tuner_type;
212 	unsigned int		radio_type;
213 	unsigned char		tuner_addr;
214 	unsigned char		radio_addr;
215 	unsigned int		tuner_bus;
216 
217 	/* Vendors can and do run the PCIe bridge at different
218 	 * clock rates, driven physically by crystals on the PCBs.
219 	 * The core has to accommodate this. This allows the user
220 	 * to add new boards with new frequencys. The value is
221 	 * expressed in Hz.
222 	 *
223 	 * The core framework will default this value based on
224 	 * current designs, but it can vary.
225 	 */
226 	u32			clk_freq;
227 	struct cx23885_input    input[MAX_CX23885_INPUT];
228 	int			ci_type; /* for NetUP */
229 	/* Force bottom field first during DMA (888 workaround) */
230 	u32                     force_bff;
231 };
232 
233 struct cx23885_subid {
234 	u16     subvendor;
235 	u16     subdevice;
236 	u32     card;
237 };
238 
239 struct cx23885_i2c {
240 	struct cx23885_dev *dev;
241 
242 	int                        nr;
243 
244 	/* i2c i/o */
245 	struct i2c_adapter         i2c_adap;
246 	struct i2c_client          i2c_client;
247 	u32                        i2c_rc;
248 
249 	/* 885 registers used for raw address */
250 	u32                        i2c_period;
251 	u32                        reg_ctrl;
252 	u32                        reg_stat;
253 	u32                        reg_addr;
254 	u32                        reg_rdata;
255 	u32                        reg_wdata;
256 };
257 
258 struct cx23885_dmaqueue {
259 	struct list_head       active;
260 	u32                    count;
261 };
262 
263 struct cx23885_tsport {
264 	struct cx23885_dev *dev;
265 
266 	unsigned                   nr;
267 	int                        sram_chno;
268 
269 	struct vb2_dvb_frontends   frontends;
270 
271 	/* dma queues */
272 	struct cx23885_dmaqueue    mpegq;
273 	u32                        ts_packet_size;
274 	u32                        ts_packet_count;
275 
276 	int                        width;
277 	int                        height;
278 
279 	spinlock_t                 slock;
280 
281 	/* registers */
282 	u32                        reg_gpcnt;
283 	u32                        reg_gpcnt_ctl;
284 	u32                        reg_dma_ctl;
285 	u32                        reg_lngth;
286 	u32                        reg_hw_sop_ctrl;
287 	u32                        reg_gen_ctrl;
288 	u32                        reg_bd_pkt_status;
289 	u32                        reg_sop_status;
290 	u32                        reg_fifo_ovfl_stat;
291 	u32                        reg_vld_misc;
292 	u32                        reg_ts_clk_en;
293 	u32                        reg_ts_int_msk;
294 	u32                        reg_ts_int_stat;
295 	u32                        reg_src_sel;
296 
297 	/* Default register vals */
298 	int                        pci_irqmask;
299 	u32                        dma_ctl_val;
300 	u32                        ts_int_msk_val;
301 	u32                        gen_ctrl_val;
302 	u32                        ts_clk_en_val;
303 	u32                        src_sel_val;
304 	u32                        vld_misc_val;
305 	u32                        hw_sop_ctrl_val;
306 
307 	/* Allow a single tsport to have multiple frontends */
308 	u32                        num_frontends;
309 	void                (*gate_ctrl)(struct cx23885_tsport *port, int open);
310 	void                       *port_priv;
311 
312 	/* Workaround for a temp dvb_frontend that the tuner can attached to */
313 	struct dvb_frontend analog_fe;
314 
315 	struct i2c_client *i2c_client_demod;
316 	struct i2c_client *i2c_client_tuner;
317 	struct i2c_client *i2c_client_sec;
318 	struct i2c_client *i2c_client_ci;
319 
320 	int (*set_frontend)(struct dvb_frontend *fe);
321 	int (*fe_set_voltage)(struct dvb_frontend *fe,
322 			      enum fe_sec_voltage voltage);
323 };
324 
325 struct cx23885_kernel_ir {
326 	struct cx23885_dev	*cx;
327 	char			*name;
328 	char			*phys;
329 
330 	struct rc_dev		*rc;
331 };
332 
333 struct cx23885_audio_buffer {
334 	unsigned int		bpl;
335 	struct cx23885_riscmem	risc;
336 	void			*vaddr;
337 	struct scatterlist	*sglist;
338 	int                     sglen;
339 	int                     nr_pages;
340 };
341 
342 struct cx23885_audio_dev {
343 	struct cx23885_dev	*dev;
344 
345 	struct pci_dev		*pci;
346 
347 	struct snd_card		*card;
348 
349 	spinlock_t		lock;
350 
351 	atomic_t		count;
352 
353 	unsigned int		dma_size;
354 	unsigned int		period_size;
355 	unsigned int		num_periods;
356 
357 	struct cx23885_audio_buffer   *buf;
358 
359 	struct snd_pcm_substream *substream;
360 };
361 
362 struct cx23885_dev {
363 	atomic_t                   refcount;
364 	struct v4l2_device	   v4l2_dev;
365 	struct v4l2_ctrl_handler   ctrl_handler;
366 
367 	/* pci stuff */
368 	struct pci_dev             *pci;
369 	unsigned char              pci_rev, pci_lat;
370 	int                        pci_bus, pci_slot;
371 	u32                        __iomem *lmmio;
372 	u8                         __iomem *bmmio;
373 	int                        pci_irqmask;
374 	spinlock_t		   pci_irqmask_lock; /* protects mask reg too */
375 	int                        hwrevision;
376 
377 	/* This valud is board specific and is used to configure the
378 	 * AV core so we see nice clean and stable video and audio. */
379 	u32                        clk_freq;
380 
381 	/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
382 	struct cx23885_i2c         i2c_bus[3];
383 
384 	int                        nr;
385 	struct mutex               lock;
386 	struct mutex               gpio_lock;
387 
388 	/* board details */
389 	unsigned int               board;
390 	char                       name[32];
391 
392 	struct cx23885_tsport      ts1, ts2;
393 
394 	/* sram configuration */
395 	struct sram_channel        *sram_channels;
396 
397 	enum {
398 		CX23885_BRIDGE_UNDEFINED = 0,
399 		CX23885_BRIDGE_885 = 885,
400 		CX23885_BRIDGE_887 = 887,
401 		CX23885_BRIDGE_888 = 888,
402 	} bridge;
403 
404 	/* Analog video */
405 	unsigned int               input;
406 	unsigned int               audinput; /* Selectable audio input */
407 	u32                        tvaudio;
408 	v4l2_std_id                tvnorm;
409 	unsigned int               tuner_type;
410 	unsigned char              tuner_addr;
411 	unsigned int               tuner_bus;
412 	unsigned int               radio_type;
413 	unsigned char              radio_addr;
414 	struct v4l2_subdev	   *sd_cx25840;
415 	struct work_struct	   cx25840_work;
416 
417 	/* Infrared */
418 	struct v4l2_subdev         *sd_ir;
419 	struct work_struct	   ir_rx_work;
420 	unsigned long		   ir_rx_notifications;
421 	struct work_struct	   ir_tx_work;
422 	unsigned long		   ir_tx_notifications;
423 
424 	struct cx23885_kernel_ir   *kernel_ir;
425 	atomic_t		   ir_input_stopping;
426 
427 	/* V4l */
428 	u32                        freq;
429 	struct video_device        *video_dev;
430 	struct video_device        *vbi_dev;
431 
432 	/* video capture */
433 	struct cx23885_fmt         *fmt;
434 	unsigned int               width, height;
435 	unsigned		   field;
436 
437 	struct cx23885_dmaqueue    vidq;
438 	struct vb2_queue           vb2_vidq;
439 	struct cx23885_dmaqueue    vbiq;
440 	struct vb2_queue           vb2_vbiq;
441 
442 	spinlock_t                 slock;
443 
444 	/* MPEG Encoder ONLY settings */
445 	u32                        cx23417_mailbox;
446 	struct cx2341x_handler     cxhdl;
447 	struct video_device        *v4l_device;
448 	struct vb2_queue           vb2_mpegq;
449 	struct cx23885_tvnorm      encodernorm;
450 
451 	/* Analog raw audio */
452 	struct cx23885_audio_dev   *audio_dev;
453 
454 	/* Does the system require periodic DMA resets? */
455 	unsigned int		need_dma_reset:1;
456 };
457 
458 static inline struct cx23885_dev *to_cx23885(struct v4l2_device *v4l2_dev)
459 {
460 	return container_of(v4l2_dev, struct cx23885_dev, v4l2_dev);
461 }
462 
463 #define call_all(dev, o, f, args...) \
464 	v4l2_device_call_all(&dev->v4l2_dev, 0, o, f, ##args)
465 
466 #define CX23885_HW_888_IR  (1 << 0)
467 #define CX23885_HW_AV_CORE (1 << 1)
468 
469 #define call_hw(dev, grpid, o, f, args...) \
470 	v4l2_device_call_all(&dev->v4l2_dev, grpid, o, f, ##args)
471 
472 extern struct v4l2_subdev *cx23885_find_hw(struct cx23885_dev *dev, u32 hw);
473 
474 #define SRAM_CH01  0 /* Video A */
475 #define SRAM_CH02  1 /* VBI A */
476 #define SRAM_CH03  2 /* Video B */
477 #define SRAM_CH04  3 /* Transport via B */
478 #define SRAM_CH05  4 /* VBI B */
479 #define SRAM_CH06  5 /* Video C */
480 #define SRAM_CH07  6 /* Transport via C */
481 #define SRAM_CH08  7 /* Audio Internal A */
482 #define SRAM_CH09  8 /* Audio Internal B */
483 #define SRAM_CH10  9 /* Audio External */
484 #define SRAM_CH11 10 /* COMB_3D_N */
485 #define SRAM_CH12 11 /* Comb 3D N1 */
486 #define SRAM_CH13 12 /* Comb 3D N2 */
487 #define SRAM_CH14 13 /* MOE Vid */
488 #define SRAM_CH15 14 /* MOE RSLT */
489 
490 struct sram_channel {
491 	char *name;
492 	u32  cmds_start;
493 	u32  ctrl_start;
494 	u32  cdt;
495 	u32  fifo_start;
496 	u32  fifo_size;
497 	u32  ptr1_reg;
498 	u32  ptr2_reg;
499 	u32  cnt1_reg;
500 	u32  cnt2_reg;
501 	u32  jumponly;
502 };
503 
504 /* ----------------------------------------------------------- */
505 
506 #define cx_read(reg)             readl(dev->lmmio + ((reg)>>2))
507 #define cx_write(reg, value)     writel((value), dev->lmmio + ((reg)>>2))
508 
509 #define cx_andor(reg, mask, value) \
510   writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
511   ((value) & (mask)), dev->lmmio+((reg)>>2))
512 
513 #define cx_set(reg, bit)          cx_andor((reg), (bit), (bit))
514 #define cx_clear(reg, bit)        cx_andor((reg), (bit), 0)
515 
516 /* ----------------------------------------------------------- */
517 /* cx23885-core.c                                              */
518 
519 extern int cx23885_sram_channel_setup(struct cx23885_dev *dev,
520 	struct sram_channel *ch,
521 	unsigned int bpl, u32 risc);
522 
523 extern void cx23885_sram_channel_dump(struct cx23885_dev *dev,
524 	struct sram_channel *ch);
525 
526 extern int cx23885_risc_buffer(struct pci_dev *pci, struct cx23885_riscmem *risc,
527 	struct scatterlist *sglist,
528 	unsigned int top_offset, unsigned int bottom_offset,
529 	unsigned int bpl, unsigned int padding, unsigned int lines);
530 
531 extern int cx23885_risc_vbibuffer(struct pci_dev *pci,
532 	struct cx23885_riscmem *risc, struct scatterlist *sglist,
533 	unsigned int top_offset, unsigned int bottom_offset,
534 	unsigned int bpl, unsigned int padding, unsigned int lines);
535 
536 int cx23885_start_dma(struct cx23885_tsport *port,
537 			     struct cx23885_dmaqueue *q,
538 			     struct cx23885_buffer   *buf);
539 void cx23885_cancel_buffers(struct cx23885_tsport *port);
540 
541 
542 extern void cx23885_gpio_set(struct cx23885_dev *dev, u32 mask);
543 extern void cx23885_gpio_clear(struct cx23885_dev *dev, u32 mask);
544 extern u32 cx23885_gpio_get(struct cx23885_dev *dev, u32 mask);
545 extern void cx23885_gpio_enable(struct cx23885_dev *dev, u32 mask,
546 	int asoutput);
547 
548 extern void cx23885_irq_add_enable(struct cx23885_dev *dev, u32 mask);
549 extern void cx23885_irq_enable(struct cx23885_dev *dev, u32 mask);
550 extern void cx23885_irq_disable(struct cx23885_dev *dev, u32 mask);
551 extern void cx23885_irq_remove(struct cx23885_dev *dev, u32 mask);
552 
553 /* ----------------------------------------------------------- */
554 /* cx23885-cards.c                                             */
555 extern struct cx23885_board cx23885_boards[];
556 extern const unsigned int cx23885_bcount;
557 
558 extern struct cx23885_subid cx23885_subids[];
559 extern const unsigned int cx23885_idcount;
560 
561 extern int cx23885_tuner_callback(void *priv, int component,
562 	int command, int arg);
563 extern void cx23885_card_list(struct cx23885_dev *dev);
564 extern int  cx23885_ir_init(struct cx23885_dev *dev);
565 extern void cx23885_ir_pci_int_enable(struct cx23885_dev *dev);
566 extern void cx23885_ir_fini(struct cx23885_dev *dev);
567 extern void cx23885_gpio_setup(struct cx23885_dev *dev);
568 extern void cx23885_card_setup(struct cx23885_dev *dev);
569 extern void cx23885_card_setup_pre_i2c(struct cx23885_dev *dev);
570 
571 extern int cx23885_dvb_register(struct cx23885_tsport *port);
572 extern int cx23885_dvb_unregister(struct cx23885_tsport *port);
573 
574 extern int cx23885_buf_prepare(struct cx23885_buffer *buf,
575 			       struct cx23885_tsport *port);
576 extern void cx23885_buf_queue(struct cx23885_tsport *port,
577 			      struct cx23885_buffer *buf);
578 extern void cx23885_free_buffer(struct cx23885_dev *dev,
579 				struct cx23885_buffer *buf);
580 
581 /* ----------------------------------------------------------- */
582 /* cx23885-video.c                                             */
583 /* Video */
584 extern int cx23885_video_register(struct cx23885_dev *dev);
585 extern void cx23885_video_unregister(struct cx23885_dev *dev);
586 extern int cx23885_video_irq(struct cx23885_dev *dev, u32 status);
587 extern void cx23885_video_wakeup(struct cx23885_dev *dev,
588 	struct cx23885_dmaqueue *q, u32 count);
589 int cx23885_enum_input(struct cx23885_dev *dev, struct v4l2_input *i);
590 int cx23885_set_input(struct file *file, void *priv, unsigned int i);
591 int cx23885_get_input(struct file *file, void *priv, unsigned int *i);
592 int cx23885_set_frequency(struct file *file, void *priv, const struct v4l2_frequency *f);
593 int cx23885_set_tvnorm(struct cx23885_dev *dev, v4l2_std_id norm);
594 
595 /* ----------------------------------------------------------- */
596 /* cx23885-vbi.c                                               */
597 extern int cx23885_vbi_fmt(struct file *file, void *priv,
598 	struct v4l2_format *f);
599 extern void cx23885_vbi_timeout(unsigned long data);
600 extern const struct vb2_ops cx23885_vbi_qops;
601 extern int cx23885_vbi_irq(struct cx23885_dev *dev, u32 status);
602 
603 /* cx23885-i2c.c                                                */
604 extern int cx23885_i2c_register(struct cx23885_i2c *bus);
605 extern int cx23885_i2c_unregister(struct cx23885_i2c *bus);
606 extern void cx23885_av_clk(struct cx23885_dev *dev, int enable);
607 
608 /* ----------------------------------------------------------- */
609 /* cx23885-417.c                                               */
610 extern int cx23885_417_register(struct cx23885_dev *dev);
611 extern void cx23885_417_unregister(struct cx23885_dev *dev);
612 extern int cx23885_irq_417(struct cx23885_dev *dev, u32 status);
613 extern void cx23885_417_check_encoder(struct cx23885_dev *dev);
614 extern void cx23885_mc417_init(struct cx23885_dev *dev);
615 extern int mc417_memory_read(struct cx23885_dev *dev, u32 address, u32 *value);
616 extern int mc417_memory_write(struct cx23885_dev *dev, u32 address, u32 value);
617 extern int mc417_register_read(struct cx23885_dev *dev,
618 				u16 address, u32 *value);
619 extern int mc417_register_write(struct cx23885_dev *dev,
620 				u16 address, u32 value);
621 extern void mc417_gpio_set(struct cx23885_dev *dev, u32 mask);
622 extern void mc417_gpio_clear(struct cx23885_dev *dev, u32 mask);
623 extern void mc417_gpio_enable(struct cx23885_dev *dev, u32 mask, int asoutput);
624 
625 /* ----------------------------------------------------------- */
626 /* cx23885-alsa.c                                             */
627 extern struct cx23885_audio_dev *cx23885_audio_register(
628 					struct cx23885_dev *dev);
629 extern void cx23885_audio_unregister(struct cx23885_dev *dev);
630 extern int cx23885_audio_irq(struct cx23885_dev *dev, u32 status, u32 mask);
631 extern int cx23885_risc_databuffer(struct pci_dev *pci,
632 				   struct cx23885_riscmem *risc,
633 				   struct scatterlist *sglist,
634 				   unsigned int bpl,
635 				   unsigned int lines,
636 				   unsigned int lpi);
637 
638 /* ----------------------------------------------------------- */
639 /* tv norms                                                    */
640 
641 static inline unsigned int norm_maxh(v4l2_std_id norm)
642 {
643 	return (norm & V4L2_STD_525_60) ? 480 : 576;
644 }
645