1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 
4     bttv - Bt848 frame grabber driver
5 
6     Copyright (C) 1996,97,98 Ralph  Metzler <rjkm@thp.uni-koeln.de>
7 			   & Marcus Metzler <mocm@thp.uni-koeln.de>
8     (c) 1999-2002 Gerd Knorr <kraxel@bytesex.org>
9 
10     some v4l2 code lines are taken from Justin's bttv2 driver which is
11     (c) 2000 Justin Schoeman <justin@suntiger.ee.up.ac.za>
12 
13     V4L1 removal from:
14     (c) 2005-2006 Nickolay V. Shmyrev <nshmyrev@yandex.ru>
15 
16     Fixes to be fully V4L2 compliant by
17     (c) 2006 Mauro Carvalho Chehab <mchehab@kernel.org>
18 
19     Cropping and overscan support
20     Copyright (C) 2005, 2006 Michael H. Schimek <mschimek@gmx.at>
21     Sponsored by OPQ Systems AB
22 
23 */
24 
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26 
27 #include <linux/init.h>
28 #include <linux/module.h>
29 #include <linux/delay.h>
30 #include <linux/slab.h>
31 #include <linux/errno.h>
32 #include <linux/fs.h>
33 #include <linux/kernel.h>
34 #include <linux/sched.h>
35 #include <linux/interrupt.h>
36 #include <linux/kdev_t.h>
37 #include "bttvp.h"
38 #include <media/v4l2-common.h>
39 #include <media/v4l2-ioctl.h>
40 #include <media/v4l2-event.h>
41 #include <media/i2c/tvaudio.h>
42 #include <media/drv-intf/msp3400.h>
43 
44 #include <linux/dma-mapping.h>
45 
46 #include <asm/io.h>
47 #include <asm/byteorder.h>
48 
49 #include <media/i2c/saa6588.h>
50 
51 #define BTTV_VERSION "0.9.19"
52 
53 unsigned int bttv_num;			/* number of Bt848s in use */
54 struct bttv *bttvs[BTTV_MAX];
55 
56 unsigned int bttv_debug;
57 unsigned int bttv_verbose = 1;
58 unsigned int bttv_gpio;
59 
60 /* config variables */
61 #ifdef __BIG_ENDIAN
62 static unsigned int bigendian=1;
63 #else
64 static unsigned int bigendian;
65 #endif
66 static unsigned int radio[BTTV_MAX];
67 static unsigned int irq_debug;
68 static unsigned int gbuffers = 8;
69 static unsigned int gbufsize = 0x208000;
70 static unsigned int reset_crop = 1;
71 
72 static int video_nr[BTTV_MAX] = { [0 ... (BTTV_MAX-1)] = -1 };
73 static int radio_nr[BTTV_MAX] = { [0 ... (BTTV_MAX-1)] = -1 };
74 static int vbi_nr[BTTV_MAX] = { [0 ... (BTTV_MAX-1)] = -1 };
75 static int debug_latency;
76 static int disable_ir;
77 
78 static unsigned int fdsr;
79 
80 /* options */
81 static unsigned int combfilter;
82 static unsigned int lumafilter;
83 static unsigned int automute    = 1;
84 static unsigned int chroma_agc;
85 static unsigned int agc_crush   = 1;
86 static unsigned int whitecrush_upper = 0xCF;
87 static unsigned int whitecrush_lower = 0x7F;
88 static unsigned int vcr_hack;
89 static unsigned int irq_iswitch;
90 static unsigned int uv_ratio    = 50;
91 static unsigned int full_luma_range;
92 static unsigned int coring;
93 
94 /* API features (turn on/off stuff for testing) */
95 static unsigned int v4l2        = 1;
96 
97 /* insmod args */
98 module_param(bttv_verbose,      int, 0644);
99 module_param(bttv_gpio,         int, 0644);
100 module_param(bttv_debug,        int, 0644);
101 module_param(irq_debug,         int, 0644);
102 module_param(debug_latency,     int, 0644);
103 module_param(disable_ir,        int, 0444);
104 
105 module_param(fdsr,              int, 0444);
106 module_param(gbuffers,          int, 0444);
107 module_param(gbufsize,          int, 0444);
108 module_param(reset_crop,        int, 0444);
109 
110 module_param(v4l2,              int, 0644);
111 module_param(bigendian,         int, 0644);
112 module_param(irq_iswitch,       int, 0644);
113 module_param(combfilter,        int, 0444);
114 module_param(lumafilter,        int, 0444);
115 module_param(automute,          int, 0444);
116 module_param(chroma_agc,        int, 0444);
117 module_param(agc_crush,         int, 0444);
118 module_param(whitecrush_upper,  int, 0444);
119 module_param(whitecrush_lower,  int, 0444);
120 module_param(vcr_hack,          int, 0444);
121 module_param(uv_ratio,          int, 0444);
122 module_param(full_luma_range,   int, 0444);
123 module_param(coring,            int, 0444);
124 
125 module_param_array(radio,       int, NULL, 0444);
126 module_param_array(video_nr,    int, NULL, 0444);
127 module_param_array(radio_nr,    int, NULL, 0444);
128 module_param_array(vbi_nr,      int, NULL, 0444);
129 
130 MODULE_PARM_DESC(radio, "The TV card supports radio, default is 0 (no)");
131 MODULE_PARM_DESC(bigendian, "byte order of the framebuffer, default is native endian");
132 MODULE_PARM_DESC(bttv_verbose, "verbose startup messages, default is 1 (yes)");
133 MODULE_PARM_DESC(bttv_gpio, "log gpio changes, default is 0 (no)");
134 MODULE_PARM_DESC(bttv_debug, "debug messages, default is 0 (no)");
135 MODULE_PARM_DESC(irq_debug, "irq handler debug messages, default is 0 (no)");
136 MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
137 MODULE_PARM_DESC(gbuffers, "number of capture buffers. range 2-32, default 8");
138 MODULE_PARM_DESC(gbufsize, "size of the capture buffers, default is 0x208000");
139 MODULE_PARM_DESC(reset_crop, "reset cropping parameters at open(), default is 1 (yes) for compatibility with older applications");
140 MODULE_PARM_DESC(automute, "mute audio on bad/missing video signal, default is 1 (yes)");
141 MODULE_PARM_DESC(chroma_agc, "enables the AGC of chroma signal, default is 0 (no)");
142 MODULE_PARM_DESC(agc_crush, "enables the luminance AGC crush, default is 1 (yes)");
143 MODULE_PARM_DESC(whitecrush_upper, "sets the white crush upper value, default is 207");
144 MODULE_PARM_DESC(whitecrush_lower, "sets the white crush lower value, default is 127");
145 MODULE_PARM_DESC(vcr_hack, "enables the VCR hack (improves synch on poor VCR tapes), default is 0 (no)");
146 MODULE_PARM_DESC(irq_iswitch, "switch inputs in irq handler");
147 MODULE_PARM_DESC(uv_ratio, "ratio between u and v gains, default is 50");
148 MODULE_PARM_DESC(full_luma_range, "use the full luma range, default is 0 (no)");
149 MODULE_PARM_DESC(coring, "set the luma coring level, default is 0 (no)");
150 MODULE_PARM_DESC(video_nr, "video device numbers");
151 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
152 MODULE_PARM_DESC(radio_nr, "radio device numbers");
153 
154 MODULE_DESCRIPTION("bttv - v4l/v4l2 driver module for bt848/878 based cards");
155 MODULE_AUTHOR("Ralph Metzler & Marcus Metzler & Gerd Knorr");
156 MODULE_LICENSE("GPL");
157 MODULE_VERSION(BTTV_VERSION);
158 
159 #define V4L2_CID_PRIVATE_COMBFILTER		(V4L2_CID_USER_BTTV_BASE + 0)
160 #define V4L2_CID_PRIVATE_AUTOMUTE		(V4L2_CID_USER_BTTV_BASE + 1)
161 #define V4L2_CID_PRIVATE_LUMAFILTER		(V4L2_CID_USER_BTTV_BASE + 2)
162 #define V4L2_CID_PRIVATE_AGC_CRUSH		(V4L2_CID_USER_BTTV_BASE + 3)
163 #define V4L2_CID_PRIVATE_VCR_HACK		(V4L2_CID_USER_BTTV_BASE + 4)
164 #define V4L2_CID_PRIVATE_WHITECRUSH_LOWER	(V4L2_CID_USER_BTTV_BASE + 5)
165 #define V4L2_CID_PRIVATE_WHITECRUSH_UPPER	(V4L2_CID_USER_BTTV_BASE + 6)
166 #define V4L2_CID_PRIVATE_UV_RATIO		(V4L2_CID_USER_BTTV_BASE + 7)
167 #define V4L2_CID_PRIVATE_FULL_LUMA_RANGE	(V4L2_CID_USER_BTTV_BASE + 8)
168 #define V4L2_CID_PRIVATE_CORING			(V4L2_CID_USER_BTTV_BASE + 9)
169 
170 /* ----------------------------------------------------------------------- */
171 /* sysfs                                                                   */
172 
173 static ssize_t show_card(struct device *cd,
174 			 struct device_attribute *attr, char *buf)
175 {
176 	struct video_device *vfd = to_video_device(cd);
177 	struct bttv *btv = video_get_drvdata(vfd);
178 	return sprintf(buf, "%d\n", btv ? btv->c.type : UNSET);
179 }
180 static DEVICE_ATTR(card, S_IRUGO, show_card, NULL);
181 
182 /* ----------------------------------------------------------------------- */
183 /* dvb auto-load setup                                                     */
184 #if defined(CONFIG_MODULES) && defined(MODULE)
185 static void request_module_async(struct work_struct *work)
186 {
187 	request_module("dvb-bt8xx");
188 }
189 
190 static void request_modules(struct bttv *dev)
191 {
192 	INIT_WORK(&dev->request_module_wk, request_module_async);
193 	schedule_work(&dev->request_module_wk);
194 }
195 
196 static void flush_request_modules(struct bttv *dev)
197 {
198 	flush_work(&dev->request_module_wk);
199 }
200 #else
201 #define request_modules(dev)
202 #define flush_request_modules(dev) do {} while(0)
203 #endif /* CONFIG_MODULES */
204 
205 
206 /* ----------------------------------------------------------------------- */
207 /* static data                                                             */
208 
209 /* special timing tables from conexant... */
210 static u8 SRAM_Table[][60] =
211 {
212 	/* PAL digital input over GPIO[7:0] */
213 	{
214 		45, // 45 bytes following
215 		0x36,0x11,0x01,0x00,0x90,0x02,0x05,0x10,0x04,0x16,
216 		0x12,0x05,0x11,0x00,0x04,0x12,0xC0,0x00,0x31,0x00,
217 		0x06,0x51,0x08,0x03,0x89,0x08,0x07,0xC0,0x44,0x00,
218 		0x81,0x01,0x01,0xA9,0x0D,0x02,0x02,0x50,0x03,0x37,
219 		0x37,0x00,0xAF,0x21,0x00
220 	},
221 	/* NTSC digital input over GPIO[7:0] */
222 	{
223 		51, // 51 bytes following
224 		0x0C,0xC0,0x00,0x00,0x90,0x02,0x03,0x10,0x03,0x06,
225 		0x10,0x04,0x12,0x12,0x05,0x02,0x13,0x04,0x19,0x00,
226 		0x04,0x39,0x00,0x06,0x59,0x08,0x03,0x83,0x08,0x07,
227 		0x03,0x50,0x00,0xC0,0x40,0x00,0x86,0x01,0x01,0xA6,
228 		0x0D,0x02,0x03,0x11,0x01,0x05,0x37,0x00,0xAC,0x21,
229 		0x00,
230 	},
231 	// TGB_NTSC392 // quartzsight
232 	// This table has been modified to be used for Fusion Rev D
233 	{
234 		0x2A, // size of table = 42
235 		0x06, 0x08, 0x04, 0x0a, 0xc0, 0x00, 0x18, 0x08, 0x03, 0x24,
236 		0x08, 0x07, 0x02, 0x90, 0x02, 0x08, 0x10, 0x04, 0x0c, 0x10,
237 		0x05, 0x2c, 0x11, 0x04, 0x55, 0x48, 0x00, 0x05, 0x50, 0x00,
238 		0xbf, 0x0c, 0x02, 0x2f, 0x3d, 0x00, 0x2f, 0x3f, 0x00, 0xc3,
239 		0x20, 0x00
240 	}
241 };
242 
243 /* minhdelayx1	first video pixel we can capture on a line and
244    hdelayx1	start of active video, both relative to rising edge of
245 		/HRESET pulse (0H) in 1 / fCLKx1.
246    swidth	width of active video and
247    totalwidth	total line width, both in 1 / fCLKx1.
248    sqwidth	total line width in square pixels.
249    vdelay	start of active video in 2 * field lines relative to
250 		trailing edge of /VRESET pulse (VDELAY register).
251    sheight	height of active video in 2 * field lines.
252    extraheight	Added to sheight for cropcap.bounds.height only
253    videostart0	ITU-R frame line number of the line corresponding
254 		to vdelay in the first field. */
255 #define CROPCAP(minhdelayx1, hdelayx1, swidth, totalwidth, sqwidth,	 \
256 		vdelay, sheight, extraheight, videostart0)		 \
257 	.cropcap.bounds.left = minhdelayx1,				 \
258 	/* * 2 because vertically we count field lines times two, */	 \
259 	/* e.g. 23 * 2 to 23 * 2 + 576 in PAL-BGHI defrect. */		 \
260 	.cropcap.bounds.top = (videostart0) * 2 - (vdelay) + MIN_VDELAY, \
261 	/* 4 is a safety margin at the end of the line. */		 \
262 	.cropcap.bounds.width = (totalwidth) - (minhdelayx1) - 4,	 \
263 	.cropcap.bounds.height = (sheight) + (extraheight) + (vdelay) -	 \
264 				 MIN_VDELAY,				 \
265 	.cropcap.defrect.left = hdelayx1,				 \
266 	.cropcap.defrect.top = (videostart0) * 2,			 \
267 	.cropcap.defrect.width = swidth,				 \
268 	.cropcap.defrect.height = sheight,				 \
269 	.cropcap.pixelaspect.numerator = totalwidth,			 \
270 	.cropcap.pixelaspect.denominator = sqwidth,
271 
272 const struct bttv_tvnorm bttv_tvnorms[] = {
273 	/* PAL-BDGHI */
274 	/* max. active video is actually 922, but 924 is divisible by 4 and 3! */
275 	/* actually, max active PAL with HSCALE=0 is 948, NTSC is 768 - nil */
276 	{
277 		.v4l2_id        = V4L2_STD_PAL,
278 		.name           = "PAL",
279 		.Fsc            = 35468950,
280 		.swidth         = 924,
281 		.sheight        = 576,
282 		.totalwidth     = 1135,
283 		.adelay         = 0x7f,
284 		.bdelay         = 0x72,
285 		.iform          = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
286 		.scaledtwidth   = 1135,
287 		.hdelayx1       = 186,
288 		.hactivex1      = 924,
289 		.vdelay         = 0x20,
290 		.vbipack        = 255, /* min (2048 / 4, 0x1ff) & 0xff */
291 		.sram           = 0,
292 		/* ITU-R frame line number of the first VBI line
293 		   we can capture, of the first and second field.
294 		   The last line is determined by cropcap.bounds. */
295 		.vbistart       = { 7, 320 },
296 		CROPCAP(/* minhdelayx1 */ 68,
297 			/* hdelayx1 */ 186,
298 			/* Should be (768 * 1135 + 944 / 2) / 944.
299 			   cropcap.defrect is used for image width
300 			   checks, so we keep the old value 924. */
301 			/* swidth */ 924,
302 			/* totalwidth */ 1135,
303 			/* sqwidth */ 944,
304 			/* vdelay */ 0x20,
305 			/* sheight */ 576,
306 			/* bt878 (and bt848?) can capture another
307 			   line below active video. */
308 			/* extraheight */ 2,
309 			/* videostart0 */ 23)
310 	},{
311 		.v4l2_id        = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
312 		.name           = "NTSC",
313 		.Fsc            = 28636363,
314 		.swidth         = 768,
315 		.sheight        = 480,
316 		.totalwidth     = 910,
317 		.adelay         = 0x68,
318 		.bdelay         = 0x5d,
319 		.iform          = (BT848_IFORM_NTSC|BT848_IFORM_XT0),
320 		.scaledtwidth   = 910,
321 		.hdelayx1       = 128,
322 		.hactivex1      = 910,
323 		.vdelay         = 0x1a,
324 		.vbipack        = 144, /* min (1600 / 4, 0x1ff) & 0xff */
325 		.sram           = 1,
326 		.vbistart	= { 10, 273 },
327 		CROPCAP(/* minhdelayx1 */ 68,
328 			/* hdelayx1 */ 128,
329 			/* Should be (640 * 910 + 780 / 2) / 780? */
330 			/* swidth */ 768,
331 			/* totalwidth */ 910,
332 			/* sqwidth */ 780,
333 			/* vdelay */ 0x1a,
334 			/* sheight */ 480,
335 			/* extraheight */ 0,
336 			/* videostart0 */ 23)
337 	},{
338 		.v4l2_id        = V4L2_STD_SECAM,
339 		.name           = "SECAM",
340 		.Fsc            = 35468950,
341 		.swidth         = 924,
342 		.sheight        = 576,
343 		.totalwidth     = 1135,
344 		.adelay         = 0x7f,
345 		.bdelay         = 0xb0,
346 		.iform          = (BT848_IFORM_SECAM|BT848_IFORM_XT1),
347 		.scaledtwidth   = 1135,
348 		.hdelayx1       = 186,
349 		.hactivex1      = 922,
350 		.vdelay         = 0x20,
351 		.vbipack        = 255,
352 		.sram           = 0, /* like PAL, correct? */
353 		.vbistart	= { 7, 320 },
354 		CROPCAP(/* minhdelayx1 */ 68,
355 			/* hdelayx1 */ 186,
356 			/* swidth */ 924,
357 			/* totalwidth */ 1135,
358 			/* sqwidth */ 944,
359 			/* vdelay */ 0x20,
360 			/* sheight */ 576,
361 			/* extraheight */ 0,
362 			/* videostart0 */ 23)
363 	},{
364 		.v4l2_id        = V4L2_STD_PAL_Nc,
365 		.name           = "PAL-Nc",
366 		.Fsc            = 28636363,
367 		.swidth         = 640,
368 		.sheight        = 576,
369 		.totalwidth     = 910,
370 		.adelay         = 0x68,
371 		.bdelay         = 0x5d,
372 		.iform          = (BT848_IFORM_PAL_NC|BT848_IFORM_XT0),
373 		.scaledtwidth   = 780,
374 		.hdelayx1       = 130,
375 		.hactivex1      = 734,
376 		.vdelay         = 0x1a,
377 		.vbipack        = 144,
378 		.sram           = -1,
379 		.vbistart	= { 7, 320 },
380 		CROPCAP(/* minhdelayx1 */ 68,
381 			/* hdelayx1 */ 130,
382 			/* swidth */ (640 * 910 + 780 / 2) / 780,
383 			/* totalwidth */ 910,
384 			/* sqwidth */ 780,
385 			/* vdelay */ 0x1a,
386 			/* sheight */ 576,
387 			/* extraheight */ 0,
388 			/* videostart0 */ 23)
389 	},{
390 		.v4l2_id        = V4L2_STD_PAL_M,
391 		.name           = "PAL-M",
392 		.Fsc            = 28636363,
393 		.swidth         = 640,
394 		.sheight        = 480,
395 		.totalwidth     = 910,
396 		.adelay         = 0x68,
397 		.bdelay         = 0x5d,
398 		.iform          = (BT848_IFORM_PAL_M|BT848_IFORM_XT0),
399 		.scaledtwidth   = 780,
400 		.hdelayx1       = 135,
401 		.hactivex1      = 754,
402 		.vdelay         = 0x1a,
403 		.vbipack        = 144,
404 		.sram           = -1,
405 		.vbistart	= { 10, 273 },
406 		CROPCAP(/* minhdelayx1 */ 68,
407 			/* hdelayx1 */ 135,
408 			/* swidth */ (640 * 910 + 780 / 2) / 780,
409 			/* totalwidth */ 910,
410 			/* sqwidth */ 780,
411 			/* vdelay */ 0x1a,
412 			/* sheight */ 480,
413 			/* extraheight */ 0,
414 			/* videostart0 */ 23)
415 	},{
416 		.v4l2_id        = V4L2_STD_PAL_N,
417 		.name           = "PAL-N",
418 		.Fsc            = 35468950,
419 		.swidth         = 768,
420 		.sheight        = 576,
421 		.totalwidth     = 1135,
422 		.adelay         = 0x7f,
423 		.bdelay         = 0x72,
424 		.iform          = (BT848_IFORM_PAL_N|BT848_IFORM_XT1),
425 		.scaledtwidth   = 944,
426 		.hdelayx1       = 186,
427 		.hactivex1      = 922,
428 		.vdelay         = 0x20,
429 		.vbipack        = 144,
430 		.sram           = -1,
431 		.vbistart       = { 7, 320 },
432 		CROPCAP(/* minhdelayx1 */ 68,
433 			/* hdelayx1 */ 186,
434 			/* swidth */ (768 * 1135 + 944 / 2) / 944,
435 			/* totalwidth */ 1135,
436 			/* sqwidth */ 944,
437 			/* vdelay */ 0x20,
438 			/* sheight */ 576,
439 			/* extraheight */ 0,
440 			/* videostart0 */ 23)
441 	},{
442 		.v4l2_id        = V4L2_STD_NTSC_M_JP,
443 		.name           = "NTSC-JP",
444 		.Fsc            = 28636363,
445 		.swidth         = 640,
446 		.sheight        = 480,
447 		.totalwidth     = 910,
448 		.adelay         = 0x68,
449 		.bdelay         = 0x5d,
450 		.iform          = (BT848_IFORM_NTSC_J|BT848_IFORM_XT0),
451 		.scaledtwidth   = 780,
452 		.hdelayx1       = 135,
453 		.hactivex1      = 754,
454 		.vdelay         = 0x16,
455 		.vbipack        = 144,
456 		.sram           = -1,
457 		.vbistart       = { 10, 273 },
458 		CROPCAP(/* minhdelayx1 */ 68,
459 			/* hdelayx1 */ 135,
460 			/* swidth */ (640 * 910 + 780 / 2) / 780,
461 			/* totalwidth */ 910,
462 			/* sqwidth */ 780,
463 			/* vdelay */ 0x16,
464 			/* sheight */ 480,
465 			/* extraheight */ 0,
466 			/* videostart0 */ 23)
467 	},{
468 		/* that one hopefully works with the strange timing
469 		 * which video recorders produce when playing a NTSC
470 		 * tape on a PAL TV ... */
471 		.v4l2_id        = V4L2_STD_PAL_60,
472 		.name           = "PAL-60",
473 		.Fsc            = 35468950,
474 		.swidth         = 924,
475 		.sheight        = 480,
476 		.totalwidth     = 1135,
477 		.adelay         = 0x7f,
478 		.bdelay         = 0x72,
479 		.iform          = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
480 		.scaledtwidth   = 1135,
481 		.hdelayx1       = 186,
482 		.hactivex1      = 924,
483 		.vdelay         = 0x1a,
484 		.vbipack        = 255,
485 		.vtotal         = 524,
486 		.sram           = -1,
487 		.vbistart	= { 10, 273 },
488 		CROPCAP(/* minhdelayx1 */ 68,
489 			/* hdelayx1 */ 186,
490 			/* swidth */ 924,
491 			/* totalwidth */ 1135,
492 			/* sqwidth */ 944,
493 			/* vdelay */ 0x1a,
494 			/* sheight */ 480,
495 			/* extraheight */ 0,
496 			/* videostart0 */ 23)
497 	}
498 };
499 static const unsigned int BTTV_TVNORMS = ARRAY_SIZE(bttv_tvnorms);
500 
501 /* ----------------------------------------------------------------------- */
502 /* bttv format list
503    packed pixel formats must come first */
504 static const struct bttv_format formats[] = {
505 	{
506 		.fourcc   = V4L2_PIX_FMT_GREY,
507 		.btformat = BT848_COLOR_FMT_Y8,
508 		.depth    = 8,
509 		.flags    = FORMAT_FLAGS_PACKED,
510 	},{
511 		.fourcc   = V4L2_PIX_FMT_HI240,
512 		.btformat = BT848_COLOR_FMT_RGB8,
513 		.depth    = 8,
514 		.flags    = FORMAT_FLAGS_PACKED | FORMAT_FLAGS_DITHER,
515 	},{
516 		.fourcc   = V4L2_PIX_FMT_RGB555,
517 		.btformat = BT848_COLOR_FMT_RGB15,
518 		.depth    = 16,
519 		.flags    = FORMAT_FLAGS_PACKED,
520 	},{
521 		.fourcc   = V4L2_PIX_FMT_RGB555X,
522 		.btformat = BT848_COLOR_FMT_RGB15,
523 		.btswap   = 0x03, /* byteswap */
524 		.depth    = 16,
525 		.flags    = FORMAT_FLAGS_PACKED,
526 	},{
527 		.fourcc   = V4L2_PIX_FMT_RGB565,
528 		.btformat = BT848_COLOR_FMT_RGB16,
529 		.depth    = 16,
530 		.flags    = FORMAT_FLAGS_PACKED,
531 	},{
532 		.fourcc   = V4L2_PIX_FMT_RGB565X,
533 		.btformat = BT848_COLOR_FMT_RGB16,
534 		.btswap   = 0x03, /* byteswap */
535 		.depth    = 16,
536 		.flags    = FORMAT_FLAGS_PACKED,
537 	},{
538 		.fourcc   = V4L2_PIX_FMT_BGR24,
539 		.btformat = BT848_COLOR_FMT_RGB24,
540 		.depth    = 24,
541 		.flags    = FORMAT_FLAGS_PACKED,
542 	},{
543 		.fourcc   = V4L2_PIX_FMT_BGR32,
544 		.btformat = BT848_COLOR_FMT_RGB32,
545 		.depth    = 32,
546 		.flags    = FORMAT_FLAGS_PACKED,
547 	},{
548 		.fourcc   = V4L2_PIX_FMT_RGB32,
549 		.btformat = BT848_COLOR_FMT_RGB32,
550 		.btswap   = 0x0f, /* byte+word swap */
551 		.depth    = 32,
552 		.flags    = FORMAT_FLAGS_PACKED,
553 	},{
554 		.fourcc   = V4L2_PIX_FMT_YUYV,
555 		.btformat = BT848_COLOR_FMT_YUY2,
556 		.depth    = 16,
557 		.flags    = FORMAT_FLAGS_PACKED,
558 	},{
559 		.fourcc   = V4L2_PIX_FMT_UYVY,
560 		.btformat = BT848_COLOR_FMT_YUY2,
561 		.btswap   = 0x03, /* byteswap */
562 		.depth    = 16,
563 		.flags    = FORMAT_FLAGS_PACKED,
564 	},{
565 		.fourcc   = V4L2_PIX_FMT_YUV422P,
566 		.btformat = BT848_COLOR_FMT_YCrCb422,
567 		.depth    = 16,
568 		.flags    = FORMAT_FLAGS_PLANAR,
569 		.hshift   = 1,
570 		.vshift   = 0,
571 	},{
572 		.fourcc   = V4L2_PIX_FMT_YUV420,
573 		.btformat = BT848_COLOR_FMT_YCrCb422,
574 		.depth    = 12,
575 		.flags    = FORMAT_FLAGS_PLANAR,
576 		.hshift   = 1,
577 		.vshift   = 1,
578 	},{
579 		.fourcc   = V4L2_PIX_FMT_YVU420,
580 		.btformat = BT848_COLOR_FMT_YCrCb422,
581 		.depth    = 12,
582 		.flags    = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb,
583 		.hshift   = 1,
584 		.vshift   = 1,
585 	},{
586 		.fourcc   = V4L2_PIX_FMT_YUV411P,
587 		.btformat = BT848_COLOR_FMT_YCrCb411,
588 		.depth    = 12,
589 		.flags    = FORMAT_FLAGS_PLANAR,
590 		.hshift   = 2,
591 		.vshift   = 0,
592 	},{
593 		.fourcc   = V4L2_PIX_FMT_YUV410,
594 		.btformat = BT848_COLOR_FMT_YCrCb411,
595 		.depth    = 9,
596 		.flags    = FORMAT_FLAGS_PLANAR,
597 		.hshift   = 2,
598 		.vshift   = 2,
599 	},{
600 		.fourcc   = V4L2_PIX_FMT_YVU410,
601 		.btformat = BT848_COLOR_FMT_YCrCb411,
602 		.depth    = 9,
603 		.flags    = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb,
604 		.hshift   = 2,
605 		.vshift   = 2,
606 	},{
607 		.fourcc   = -1,
608 		.btformat = BT848_COLOR_FMT_RAW,
609 		.depth    = 8,
610 		.flags    = FORMAT_FLAGS_RAW,
611 	}
612 };
613 static const unsigned int FORMATS = ARRAY_SIZE(formats);
614 
615 /* ----------------------------------------------------------------------- */
616 /* resource management                                                     */
617 
618 /*
619    RESOURCE_    allocated by                freed by
620 
621    VIDEO_READ   bttv_read 1)                bttv_read 2)
622 
623    VIDEO_STREAM VIDIOC_STREAMON             VIDIOC_STREAMOFF
624 		 VIDIOC_QBUF 1)              bttv_release
625 		 VIDIOCMCAPTURE 1)
626 
627    OVERLAY	 VIDIOCCAPTURE on            VIDIOCCAPTURE off
628 		 VIDIOC_OVERLAY on           VIDIOC_OVERLAY off
629 		 3)                          bttv_release
630 
631    VBI		 VIDIOC_STREAMON             VIDIOC_STREAMOFF
632 		 VIDIOC_QBUF 1)              bttv_release
633 		 bttv_read, bttv_poll 1) 4)
634 
635    1) The resource must be allocated when we enter buffer prepare functions
636       and remain allocated while buffers are in the DMA queue.
637    2) This is a single frame read.
638    3) VIDIOC_S_FBUF and VIDIOC_S_FMT (OVERLAY) still work when
639       RESOURCE_OVERLAY is allocated.
640    4) This is a continuous read, implies VIDIOC_STREAMON.
641 
642    Note this driver permits video input and standard changes regardless if
643    resources are allocated.
644 */
645 
646 #define VBI_RESOURCES (RESOURCE_VBI)
647 #define VIDEO_RESOURCES (RESOURCE_VIDEO_READ | \
648 			 RESOURCE_VIDEO_STREAM | \
649 			 RESOURCE_OVERLAY)
650 
651 static
652 int check_alloc_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bit)
653 {
654 	int xbits; /* mutual exclusive resources */
655 
656 	if (fh->resources & bit)
657 		/* have it already allocated */
658 		return 1;
659 
660 	xbits = bit;
661 	if (bit & (RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM))
662 		xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM;
663 
664 	/* is it free? */
665 	if (btv->resources & xbits) {
666 		/* no, someone else uses it */
667 		goto fail;
668 	}
669 
670 	if ((bit & VIDEO_RESOURCES)
671 	    && 0 == (btv->resources & VIDEO_RESOURCES)) {
672 		/* Do crop - use current, don't - use default parameters. */
673 		__s32 top = btv->crop[!!fh->do_crop].rect.top;
674 
675 		if (btv->vbi_end > top)
676 			goto fail;
677 
678 		/* We cannot capture the same line as video and VBI data.
679 		   Claim scan lines crop[].rect.top to bottom. */
680 		btv->crop_start = top;
681 	} else if (bit & VBI_RESOURCES) {
682 		__s32 end = fh->vbi_fmt.end;
683 
684 		if (end > btv->crop_start)
685 			goto fail;
686 
687 		/* Claim scan lines above fh->vbi_fmt.end. */
688 		btv->vbi_end = end;
689 	}
690 
691 	/* it's free, grab it */
692 	fh->resources  |= bit;
693 	btv->resources |= bit;
694 	return 1;
695 
696  fail:
697 	return 0;
698 }
699 
700 static
701 int check_btres(struct bttv_fh *fh, int bit)
702 {
703 	return (fh->resources & bit);
704 }
705 
706 static
707 int locked_btres(struct bttv *btv, int bit)
708 {
709 	return (btv->resources & bit);
710 }
711 
712 /* Call with btv->lock down. */
713 static void
714 disclaim_vbi_lines(struct bttv *btv)
715 {
716 	btv->vbi_end = 0;
717 }
718 
719 /* Call with btv->lock down. */
720 static void
721 disclaim_video_lines(struct bttv *btv)
722 {
723 	const struct bttv_tvnorm *tvnorm;
724 	u8 crop;
725 
726 	tvnorm = &bttv_tvnorms[btv->tvnorm];
727 	btv->crop_start = tvnorm->cropcap.bounds.top
728 		+ tvnorm->cropcap.bounds.height;
729 
730 	/* VBI capturing ends at VDELAY, start of video capturing, no
731 	   matter how many lines the VBI RISC program expects. When video
732 	   capturing is off, it shall no longer "preempt" VBI capturing,
733 	   so we set VDELAY to maximum. */
734 	crop = btread(BT848_E_CROP) | 0xc0;
735 	btwrite(crop, BT848_E_CROP);
736 	btwrite(0xfe, BT848_E_VDELAY_LO);
737 	btwrite(crop, BT848_O_CROP);
738 	btwrite(0xfe, BT848_O_VDELAY_LO);
739 }
740 
741 static
742 void free_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bits)
743 {
744 	if ((fh->resources & bits) != bits) {
745 		/* trying to free resources not allocated by us ... */
746 		pr_err("BUG! (btres)\n");
747 	}
748 	fh->resources  &= ~bits;
749 	btv->resources &= ~bits;
750 
751 	bits = btv->resources;
752 
753 	if (0 == (bits & VIDEO_RESOURCES))
754 		disclaim_video_lines(btv);
755 
756 	if (0 == (bits & VBI_RESOURCES))
757 		disclaim_vbi_lines(btv);
758 }
759 
760 /* ----------------------------------------------------------------------- */
761 /* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC          */
762 
763 /* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C
764    PLL_X = Reference pre-divider (0=1, 1=2)
765    PLL_C = Post divider (0=6, 1=4)
766    PLL_I = Integer input
767    PLL_F = Fractional input
768 
769    F_input = 28.636363 MHz:
770    PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0
771 */
772 
773 static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout)
774 {
775 	unsigned char fl, fh, fi;
776 
777 	/* prevent overflows */
778 	fin/=4;
779 	fout/=4;
780 
781 	fout*=12;
782 	fi=fout/fin;
783 
784 	fout=(fout%fin)*256;
785 	fh=fout/fin;
786 
787 	fout=(fout%fin)*256;
788 	fl=fout/fin;
789 
790 	btwrite(fl, BT848_PLL_F_LO);
791 	btwrite(fh, BT848_PLL_F_HI);
792 	btwrite(fi|BT848_PLL_X, BT848_PLL_XCI);
793 }
794 
795 static void set_pll(struct bttv *btv)
796 {
797 	int i;
798 
799 	if (!btv->pll.pll_crystal)
800 		return;
801 
802 	if (btv->pll.pll_ofreq == btv->pll.pll_current) {
803 		dprintk("%d: PLL: no change required\n", btv->c.nr);
804 		return;
805 	}
806 
807 	if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) {
808 		/* no PLL needed */
809 		if (btv->pll.pll_current == 0)
810 			return;
811 		if (bttv_verbose)
812 			pr_info("%d: PLL can sleep, using XTAL (%d)\n",
813 				btv->c.nr, btv->pll.pll_ifreq);
814 		btwrite(0x00,BT848_TGCTRL);
815 		btwrite(0x00,BT848_PLL_XCI);
816 		btv->pll.pll_current = 0;
817 		return;
818 	}
819 
820 	if (bttv_verbose)
821 		pr_info("%d: Setting PLL: %d => %d (needs up to 100ms)\n",
822 			btv->c.nr,
823 			btv->pll.pll_ifreq, btv->pll.pll_ofreq);
824 	set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);
825 
826 	for (i=0; i<10; i++) {
827 		/*  Let other people run while the PLL stabilizes */
828 		msleep(10);
829 
830 		if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
831 			btwrite(0,BT848_DSTATUS);
832 		} else {
833 			btwrite(0x08,BT848_TGCTRL);
834 			btv->pll.pll_current = btv->pll.pll_ofreq;
835 			if (bttv_verbose)
836 				pr_info("PLL set ok\n");
837 			return;
838 		}
839 	}
840 	btv->pll.pll_current = -1;
841 	if (bttv_verbose)
842 		pr_info("Setting PLL failed\n");
843 	return;
844 }
845 
846 /* used to switch between the bt848's analog/digital video capture modes */
847 static void bt848A_set_timing(struct bttv *btv)
848 {
849 	int i, len;
850 	int table_idx = bttv_tvnorms[btv->tvnorm].sram;
851 	int fsc       = bttv_tvnorms[btv->tvnorm].Fsc;
852 
853 	if (btv->input == btv->dig) {
854 		dprintk("%d: load digital timing table (table_idx=%d)\n",
855 			btv->c.nr,table_idx);
856 
857 		/* timing change...reset timing generator address */
858 		btwrite(0x00, BT848_TGCTRL);
859 		btwrite(0x02, BT848_TGCTRL);
860 		btwrite(0x00, BT848_TGCTRL);
861 
862 		len=SRAM_Table[table_idx][0];
863 		for(i = 1; i <= len; i++)
864 			btwrite(SRAM_Table[table_idx][i],BT848_TGLB);
865 		btv->pll.pll_ofreq = 27000000;
866 
867 		set_pll(btv);
868 		btwrite(0x11, BT848_TGCTRL);
869 		btwrite(0x41, BT848_DVSIF);
870 	} else {
871 		btv->pll.pll_ofreq = fsc;
872 		set_pll(btv);
873 		btwrite(0x0, BT848_DVSIF);
874 	}
875 }
876 
877 /* ----------------------------------------------------------------------- */
878 
879 static void bt848_bright(struct bttv *btv, int bright)
880 {
881 	int value;
882 
883 	// printk("set bright: %d\n", bright); // DEBUG
884 	btv->bright = bright;
885 
886 	/* We want -128 to 127 we get 0-65535 */
887 	value = (bright >> 8) - 128;
888 	btwrite(value & 0xff, BT848_BRIGHT);
889 }
890 
891 static void bt848_hue(struct bttv *btv, int hue)
892 {
893 	int value;
894 
895 	btv->hue = hue;
896 
897 	/* -128 to 127 */
898 	value = (hue >> 8) - 128;
899 	btwrite(value & 0xff, BT848_HUE);
900 }
901 
902 static void bt848_contrast(struct bttv *btv, int cont)
903 {
904 	int value,hibit;
905 
906 	btv->contrast = cont;
907 
908 	/* 0-511 */
909 	value = (cont  >> 7);
910 	hibit = (value >> 6) & 4;
911 	btwrite(value & 0xff, BT848_CONTRAST_LO);
912 	btaor(hibit, ~4, BT848_E_CONTROL);
913 	btaor(hibit, ~4, BT848_O_CONTROL);
914 }
915 
916 static void bt848_sat(struct bttv *btv, int color)
917 {
918 	int val_u,val_v,hibits;
919 
920 	btv->saturation = color;
921 
922 	/* 0-511 for the color */
923 	val_u   = ((color * btv->opt_uv_ratio) / 50) >> 7;
924 	val_v   = (((color * (100 - btv->opt_uv_ratio) / 50) >>7)*180L)/254;
925 	hibits  = (val_u >> 7) & 2;
926 	hibits |= (val_v >> 8) & 1;
927 	btwrite(val_u & 0xff, BT848_SAT_U_LO);
928 	btwrite(val_v & 0xff, BT848_SAT_V_LO);
929 	btaor(hibits, ~3, BT848_E_CONTROL);
930 	btaor(hibits, ~3, BT848_O_CONTROL);
931 }
932 
933 /* ----------------------------------------------------------------------- */
934 
935 static int
936 video_mux(struct bttv *btv, unsigned int input)
937 {
938 	int mux,mask2;
939 
940 	if (input >= bttv_tvcards[btv->c.type].video_inputs)
941 		return -EINVAL;
942 
943 	/* needed by RemoteVideo MX */
944 	mask2 = bttv_tvcards[btv->c.type].gpiomask2;
945 	if (mask2)
946 		gpio_inout(mask2,mask2);
947 
948 	if (input == btv->svhs)  {
949 		btor(BT848_CONTROL_COMP, BT848_E_CONTROL);
950 		btor(BT848_CONTROL_COMP, BT848_O_CONTROL);
951 	} else {
952 		btand(~BT848_CONTROL_COMP, BT848_E_CONTROL);
953 		btand(~BT848_CONTROL_COMP, BT848_O_CONTROL);
954 	}
955 	mux = bttv_muxsel(btv, input);
956 	btaor(mux<<5, ~(3<<5), BT848_IFORM);
957 	dprintk("%d: video mux: input=%d mux=%d\n", btv->c.nr, input, mux);
958 
959 	/* card specific hook */
960 	if(bttv_tvcards[btv->c.type].muxsel_hook)
961 		bttv_tvcards[btv->c.type].muxsel_hook (btv, input);
962 	return 0;
963 }
964 
965 static char *audio_modes[] = {
966 	"audio: tuner", "audio: radio", "audio: extern",
967 	"audio: intern", "audio: mute"
968 };
969 
970 static void
971 audio_mux_gpio(struct bttv *btv, int input, int mute)
972 {
973 	int gpio_val, signal, mute_gpio;
974 
975 	gpio_inout(bttv_tvcards[btv->c.type].gpiomask,
976 		   bttv_tvcards[btv->c.type].gpiomask);
977 	signal = btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC;
978 
979 	/* automute */
980 	mute_gpio = mute || (btv->opt_automute && (!signal || !btv->users)
981 				&& !btv->has_radio_tuner);
982 
983 	if (mute_gpio)
984 		gpio_val = bttv_tvcards[btv->c.type].gpiomute;
985 	else
986 		gpio_val = bttv_tvcards[btv->c.type].gpiomux[input];
987 
988 	switch (btv->c.type) {
989 	case BTTV_BOARD_VOODOOTV_FM:
990 	case BTTV_BOARD_VOODOOTV_200:
991 		gpio_val = bttv_tda9880_setnorm(btv, gpio_val);
992 		break;
993 
994 	default:
995 		gpio_bits(bttv_tvcards[btv->c.type].gpiomask, gpio_val);
996 	}
997 
998 	if (bttv_gpio)
999 		bttv_gpio_tracking(btv, audio_modes[mute_gpio ? 4 : input]);
1000 }
1001 
1002 static int
1003 audio_mute(struct bttv *btv, int mute)
1004 {
1005 	struct v4l2_ctrl *ctrl;
1006 
1007 	audio_mux_gpio(btv, btv->audio_input, mute);
1008 
1009 	if (btv->sd_msp34xx) {
1010 		ctrl = v4l2_ctrl_find(btv->sd_msp34xx->ctrl_handler, V4L2_CID_AUDIO_MUTE);
1011 		if (ctrl)
1012 			v4l2_ctrl_s_ctrl(ctrl, mute);
1013 	}
1014 	if (btv->sd_tvaudio) {
1015 		ctrl = v4l2_ctrl_find(btv->sd_tvaudio->ctrl_handler, V4L2_CID_AUDIO_MUTE);
1016 		if (ctrl)
1017 			v4l2_ctrl_s_ctrl(ctrl, mute);
1018 	}
1019 	if (btv->sd_tda7432) {
1020 		ctrl = v4l2_ctrl_find(btv->sd_tda7432->ctrl_handler, V4L2_CID_AUDIO_MUTE);
1021 		if (ctrl)
1022 			v4l2_ctrl_s_ctrl(ctrl, mute);
1023 	}
1024 	return 0;
1025 }
1026 
1027 static int
1028 audio_input(struct bttv *btv, int input)
1029 {
1030 	audio_mux_gpio(btv, input, btv->mute);
1031 
1032 	if (btv->sd_msp34xx) {
1033 		u32 in;
1034 
1035 		/* Note: the inputs tuner/radio/extern/intern are translated
1036 		   to msp routings. This assumes common behavior for all msp3400
1037 		   based TV cards. When this assumption fails, then the
1038 		   specific MSP routing must be added to the card table.
1039 		   For now this is sufficient. */
1040 		switch (input) {
1041 		case TVAUDIO_INPUT_RADIO:
1042 			/* Some boards need the msp do to the radio demod */
1043 			if (btv->radio_uses_msp_demodulator) {
1044 				in = MSP_INPUT_DEFAULT;
1045 				break;
1046 			}
1047 			in = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1048 				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1049 			break;
1050 		case TVAUDIO_INPUT_EXTERN:
1051 			in = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
1052 				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1053 			break;
1054 		case TVAUDIO_INPUT_INTERN:
1055 			/* Yes, this is the same input as for RADIO. I doubt
1056 			   if this is ever used. The only board with an INTERN
1057 			   input is the BTTV_BOARD_AVERMEDIA98. I wonder how
1058 			   that was tested. My guess is that the whole INTERN
1059 			   input does not work. */
1060 			in = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1061 				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1062 			break;
1063 		case TVAUDIO_INPUT_TUNER:
1064 		default:
1065 			/* This is the only card that uses TUNER2, and afaik,
1066 			   is the only difference between the VOODOOTV_FM
1067 			   and VOODOOTV_200 */
1068 			if (btv->c.type == BTTV_BOARD_VOODOOTV_200)
1069 				in = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER2, \
1070 					MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER);
1071 			else
1072 				in = MSP_INPUT_DEFAULT;
1073 			break;
1074 		}
1075 		v4l2_subdev_call(btv->sd_msp34xx, audio, s_routing,
1076 			       in, MSP_OUTPUT_DEFAULT, 0);
1077 	}
1078 	if (btv->sd_tvaudio) {
1079 		v4l2_subdev_call(btv->sd_tvaudio, audio, s_routing,
1080 				 input, 0, 0);
1081 	}
1082 	return 0;
1083 }
1084 
1085 static void
1086 bttv_crop_calc_limits(struct bttv_crop *c)
1087 {
1088 	/* Scale factor min. 1:1, max. 16:1. Min. image size
1089 	   48 x 32. Scaled width must be a multiple of 4. */
1090 
1091 	if (1) {
1092 		/* For bug compatibility with VIDIOCGCAP and image
1093 		   size checks in earlier driver versions. */
1094 		c->min_scaled_width = 48;
1095 		c->min_scaled_height = 32;
1096 	} else {
1097 		c->min_scaled_width =
1098 			(max_t(unsigned int, 48, c->rect.width >> 4) + 3) & ~3;
1099 		c->min_scaled_height =
1100 			max_t(unsigned int, 32, c->rect.height >> 4);
1101 	}
1102 
1103 	c->max_scaled_width  = c->rect.width & ~3;
1104 	c->max_scaled_height = c->rect.height;
1105 }
1106 
1107 static void
1108 bttv_crop_reset(struct bttv_crop *c, unsigned int norm)
1109 {
1110 	c->rect = bttv_tvnorms[norm].cropcap.defrect;
1111 	bttv_crop_calc_limits(c);
1112 }
1113 
1114 /* Call with btv->lock down. */
1115 static int
1116 set_tvnorm(struct bttv *btv, unsigned int norm)
1117 {
1118 	const struct bttv_tvnorm *tvnorm;
1119 	v4l2_std_id id;
1120 
1121 	BUG_ON(norm >= BTTV_TVNORMS);
1122 	BUG_ON(btv->tvnorm >= BTTV_TVNORMS);
1123 
1124 	tvnorm = &bttv_tvnorms[norm];
1125 
1126 	if (memcmp(&bttv_tvnorms[btv->tvnorm].cropcap, &tvnorm->cropcap,
1127 		    sizeof (tvnorm->cropcap))) {
1128 		bttv_crop_reset(&btv->crop[0], norm);
1129 		btv->crop[1] = btv->crop[0]; /* current = default */
1130 
1131 		if (0 == (btv->resources & VIDEO_RESOURCES)) {
1132 			btv->crop_start = tvnorm->cropcap.bounds.top
1133 				+ tvnorm->cropcap.bounds.height;
1134 		}
1135 	}
1136 
1137 	btv->tvnorm = norm;
1138 
1139 	btwrite(tvnorm->adelay, BT848_ADELAY);
1140 	btwrite(tvnorm->bdelay, BT848_BDELAY);
1141 	btaor(tvnorm->iform,~(BT848_IFORM_NORM|BT848_IFORM_XTBOTH),
1142 	      BT848_IFORM);
1143 	btwrite(tvnorm->vbipack, BT848_VBI_PACK_SIZE);
1144 	btwrite(1, BT848_VBI_PACK_DEL);
1145 	bt848A_set_timing(btv);
1146 
1147 	switch (btv->c.type) {
1148 	case BTTV_BOARD_VOODOOTV_FM:
1149 	case BTTV_BOARD_VOODOOTV_200:
1150 		bttv_tda9880_setnorm(btv, gpio_read());
1151 		break;
1152 	}
1153 	id = tvnorm->v4l2_id;
1154 	bttv_call_all(btv, video, s_std, id);
1155 
1156 	return 0;
1157 }
1158 
1159 /* Call with btv->lock down. */
1160 static void
1161 set_input(struct bttv *btv, unsigned int input, unsigned int norm)
1162 {
1163 	unsigned long flags;
1164 
1165 	btv->input = input;
1166 	if (irq_iswitch) {
1167 		spin_lock_irqsave(&btv->s_lock,flags);
1168 		if (btv->curr.frame_irq) {
1169 			/* active capture -> delayed input switch */
1170 			btv->new_input = input;
1171 		} else {
1172 			video_mux(btv,input);
1173 		}
1174 		spin_unlock_irqrestore(&btv->s_lock,flags);
1175 	} else {
1176 		video_mux(btv,input);
1177 	}
1178 	btv->audio_input = (btv->tuner_type != TUNER_ABSENT && input == 0) ?
1179 				TVAUDIO_INPUT_TUNER : TVAUDIO_INPUT_EXTERN;
1180 	audio_input(btv, btv->audio_input);
1181 	set_tvnorm(btv, norm);
1182 }
1183 
1184 static void init_irqreg(struct bttv *btv)
1185 {
1186 	/* clear status */
1187 	btwrite(0xfffffUL, BT848_INT_STAT);
1188 
1189 	if (bttv_tvcards[btv->c.type].no_video) {
1190 		/* i2c only */
1191 		btwrite(BT848_INT_I2CDONE,
1192 			BT848_INT_MASK);
1193 	} else {
1194 		/* full video */
1195 		btwrite((btv->triton1)  |
1196 			(btv->gpioirq ? BT848_INT_GPINT : 0) |
1197 			BT848_INT_SCERR |
1198 			(fdsr ? BT848_INT_FDSR : 0) |
1199 			BT848_INT_RISCI | BT848_INT_OCERR |
1200 			BT848_INT_FMTCHG|BT848_INT_HLOCK|
1201 			BT848_INT_I2CDONE,
1202 			BT848_INT_MASK);
1203 	}
1204 }
1205 
1206 static void init_bt848(struct bttv *btv)
1207 {
1208 	if (bttv_tvcards[btv->c.type].no_video) {
1209 		/* very basic init only */
1210 		init_irqreg(btv);
1211 		return;
1212 	}
1213 
1214 	btwrite(0x00, BT848_CAP_CTL);
1215 	btwrite(BT848_COLOR_CTL_GAMMA, BT848_COLOR_CTL);
1216 	btwrite(BT848_IFORM_XTAUTO | BT848_IFORM_AUTO, BT848_IFORM);
1217 
1218 	/* set planar and packed mode trigger points and         */
1219 	/* set rising edge of inverted GPINTR pin as irq trigger */
1220 	btwrite(BT848_GPIO_DMA_CTL_PKTP_32|
1221 		BT848_GPIO_DMA_CTL_PLTP1_16|
1222 		BT848_GPIO_DMA_CTL_PLTP23_16|
1223 		BT848_GPIO_DMA_CTL_GPINTC|
1224 		BT848_GPIO_DMA_CTL_GPINTI,
1225 		BT848_GPIO_DMA_CTL);
1226 
1227 	btwrite(0x20, BT848_E_VSCALE_HI);
1228 	btwrite(0x20, BT848_O_VSCALE_HI);
1229 
1230 	v4l2_ctrl_handler_setup(&btv->ctrl_handler);
1231 
1232 	/* interrupt */
1233 	init_irqreg(btv);
1234 }
1235 
1236 static void bttv_reinit_bt848(struct bttv *btv)
1237 {
1238 	unsigned long flags;
1239 
1240 	if (bttv_verbose)
1241 		pr_info("%d: reset, reinitialize\n", btv->c.nr);
1242 	spin_lock_irqsave(&btv->s_lock,flags);
1243 	btv->errors=0;
1244 	bttv_set_dma(btv,0);
1245 	spin_unlock_irqrestore(&btv->s_lock,flags);
1246 
1247 	init_bt848(btv);
1248 	btv->pll.pll_current = -1;
1249 	set_input(btv, btv->input, btv->tvnorm);
1250 }
1251 
1252 static int bttv_s_ctrl(struct v4l2_ctrl *c)
1253 {
1254 	struct bttv *btv = container_of(c->handler, struct bttv, ctrl_handler);
1255 	int val;
1256 
1257 	switch (c->id) {
1258 	case V4L2_CID_BRIGHTNESS:
1259 		bt848_bright(btv, c->val);
1260 		break;
1261 	case V4L2_CID_HUE:
1262 		bt848_hue(btv, c->val);
1263 		break;
1264 	case V4L2_CID_CONTRAST:
1265 		bt848_contrast(btv, c->val);
1266 		break;
1267 	case V4L2_CID_SATURATION:
1268 		bt848_sat(btv, c->val);
1269 		break;
1270 	case V4L2_CID_COLOR_KILLER:
1271 		if (c->val) {
1272 			btor(BT848_SCLOOP_CKILL, BT848_E_SCLOOP);
1273 			btor(BT848_SCLOOP_CKILL, BT848_O_SCLOOP);
1274 		} else {
1275 			btand(~BT848_SCLOOP_CKILL, BT848_E_SCLOOP);
1276 			btand(~BT848_SCLOOP_CKILL, BT848_O_SCLOOP);
1277 		}
1278 		break;
1279 	case V4L2_CID_AUDIO_MUTE:
1280 		audio_mute(btv, c->val);
1281 		btv->mute = c->val;
1282 		break;
1283 	case V4L2_CID_AUDIO_VOLUME:
1284 		btv->volume_gpio(btv, c->val);
1285 		break;
1286 
1287 	case V4L2_CID_CHROMA_AGC:
1288 		val = c->val ? BT848_SCLOOP_CAGC : 0;
1289 		btwrite(val, BT848_E_SCLOOP);
1290 		btwrite(val, BT848_O_SCLOOP);
1291 		break;
1292 	case V4L2_CID_PRIVATE_COMBFILTER:
1293 		btv->opt_combfilter = c->val;
1294 		break;
1295 	case V4L2_CID_PRIVATE_LUMAFILTER:
1296 		if (c->val) {
1297 			btand(~BT848_CONTROL_LDEC, BT848_E_CONTROL);
1298 			btand(~BT848_CONTROL_LDEC, BT848_O_CONTROL);
1299 		} else {
1300 			btor(BT848_CONTROL_LDEC, BT848_E_CONTROL);
1301 			btor(BT848_CONTROL_LDEC, BT848_O_CONTROL);
1302 		}
1303 		break;
1304 	case V4L2_CID_PRIVATE_AUTOMUTE:
1305 		btv->opt_automute = c->val;
1306 		break;
1307 	case V4L2_CID_PRIVATE_AGC_CRUSH:
1308 		btwrite(BT848_ADC_RESERVED |
1309 				(c->val ? BT848_ADC_CRUSH : 0),
1310 				BT848_ADC);
1311 		break;
1312 	case V4L2_CID_PRIVATE_VCR_HACK:
1313 		btv->opt_vcr_hack = c->val;
1314 		break;
1315 	case V4L2_CID_PRIVATE_WHITECRUSH_UPPER:
1316 		btwrite(c->val, BT848_WC_UP);
1317 		break;
1318 	case V4L2_CID_PRIVATE_WHITECRUSH_LOWER:
1319 		btwrite(c->val, BT848_WC_DOWN);
1320 		break;
1321 	case V4L2_CID_PRIVATE_UV_RATIO:
1322 		btv->opt_uv_ratio = c->val;
1323 		bt848_sat(btv, btv->saturation);
1324 		break;
1325 	case V4L2_CID_PRIVATE_FULL_LUMA_RANGE:
1326 		btaor((c->val << 7), ~BT848_OFORM_RANGE, BT848_OFORM);
1327 		break;
1328 	case V4L2_CID_PRIVATE_CORING:
1329 		btaor((c->val << 5), ~BT848_OFORM_CORE32, BT848_OFORM);
1330 		break;
1331 	default:
1332 		return -EINVAL;
1333 	}
1334 	return 0;
1335 }
1336 
1337 /* ----------------------------------------------------------------------- */
1338 
1339 static const struct v4l2_ctrl_ops bttv_ctrl_ops = {
1340 	.s_ctrl = bttv_s_ctrl,
1341 };
1342 
1343 static struct v4l2_ctrl_config bttv_ctrl_combfilter = {
1344 	.ops = &bttv_ctrl_ops,
1345 	.id = V4L2_CID_PRIVATE_COMBFILTER,
1346 	.name = "Comb Filter",
1347 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1348 	.min = 0,
1349 	.max = 1,
1350 	.step = 1,
1351 	.def = 1,
1352 };
1353 
1354 static struct v4l2_ctrl_config bttv_ctrl_automute = {
1355 	.ops = &bttv_ctrl_ops,
1356 	.id = V4L2_CID_PRIVATE_AUTOMUTE,
1357 	.name = "Auto Mute",
1358 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1359 	.min = 0,
1360 	.max = 1,
1361 	.step = 1,
1362 	.def = 1,
1363 };
1364 
1365 static struct v4l2_ctrl_config bttv_ctrl_lumafilter = {
1366 	.ops = &bttv_ctrl_ops,
1367 	.id = V4L2_CID_PRIVATE_LUMAFILTER,
1368 	.name = "Luma Decimation Filter",
1369 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1370 	.min = 0,
1371 	.max = 1,
1372 	.step = 1,
1373 	.def = 1,
1374 };
1375 
1376 static struct v4l2_ctrl_config bttv_ctrl_agc_crush = {
1377 	.ops = &bttv_ctrl_ops,
1378 	.id = V4L2_CID_PRIVATE_AGC_CRUSH,
1379 	.name = "AGC Crush",
1380 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1381 	.min = 0,
1382 	.max = 1,
1383 	.step = 1,
1384 	.def = 1,
1385 };
1386 
1387 static struct v4l2_ctrl_config bttv_ctrl_vcr_hack = {
1388 	.ops = &bttv_ctrl_ops,
1389 	.id = V4L2_CID_PRIVATE_VCR_HACK,
1390 	.name = "VCR Hack",
1391 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1392 	.min = 0,
1393 	.max = 1,
1394 	.step = 1,
1395 	.def = 1,
1396 };
1397 
1398 static struct v4l2_ctrl_config bttv_ctrl_whitecrush_lower = {
1399 	.ops = &bttv_ctrl_ops,
1400 	.id = V4L2_CID_PRIVATE_WHITECRUSH_LOWER,
1401 	.name = "Whitecrush Lower",
1402 	.type = V4L2_CTRL_TYPE_INTEGER,
1403 	.min = 0,
1404 	.max = 255,
1405 	.step = 1,
1406 	.def = 0x7f,
1407 };
1408 
1409 static struct v4l2_ctrl_config bttv_ctrl_whitecrush_upper = {
1410 	.ops = &bttv_ctrl_ops,
1411 	.id = V4L2_CID_PRIVATE_WHITECRUSH_UPPER,
1412 	.name = "Whitecrush Upper",
1413 	.type = V4L2_CTRL_TYPE_INTEGER,
1414 	.min = 0,
1415 	.max = 255,
1416 	.step = 1,
1417 	.def = 0xcf,
1418 };
1419 
1420 static struct v4l2_ctrl_config bttv_ctrl_uv_ratio = {
1421 	.ops = &bttv_ctrl_ops,
1422 	.id = V4L2_CID_PRIVATE_UV_RATIO,
1423 	.name = "UV Ratio",
1424 	.type = V4L2_CTRL_TYPE_INTEGER,
1425 	.min = 0,
1426 	.max = 100,
1427 	.step = 1,
1428 	.def = 50,
1429 };
1430 
1431 static struct v4l2_ctrl_config bttv_ctrl_full_luma = {
1432 	.ops = &bttv_ctrl_ops,
1433 	.id = V4L2_CID_PRIVATE_FULL_LUMA_RANGE,
1434 	.name = "Full Luma Range",
1435 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1436 	.min = 0,
1437 	.max = 1,
1438 	.step = 1,
1439 };
1440 
1441 static struct v4l2_ctrl_config bttv_ctrl_coring = {
1442 	.ops = &bttv_ctrl_ops,
1443 	.id = V4L2_CID_PRIVATE_CORING,
1444 	.name = "Coring",
1445 	.type = V4L2_CTRL_TYPE_INTEGER,
1446 	.min = 0,
1447 	.max = 3,
1448 	.step = 1,
1449 };
1450 
1451 
1452 /* ----------------------------------------------------------------------- */
1453 
1454 void bttv_gpio_tracking(struct bttv *btv, char *comment)
1455 {
1456 	unsigned int outbits, data;
1457 	outbits = btread(BT848_GPIO_OUT_EN);
1458 	data    = btread(BT848_GPIO_DATA);
1459 	pr_debug("%d: gpio: en=%08x, out=%08x in=%08x [%s]\n",
1460 		 btv->c.nr, outbits, data & outbits, data & ~outbits, comment);
1461 }
1462 
1463 static void bttv_field_count(struct bttv *btv)
1464 {
1465 	int need_count = 0;
1466 
1467 	if (btv->users)
1468 		need_count++;
1469 
1470 	if (need_count) {
1471 		/* start field counter */
1472 		btor(BT848_INT_VSYNC,BT848_INT_MASK);
1473 	} else {
1474 		/* stop field counter */
1475 		btand(~BT848_INT_VSYNC,BT848_INT_MASK);
1476 		btv->field_count = 0;
1477 	}
1478 }
1479 
1480 static const struct bttv_format*
1481 format_by_fourcc(int fourcc)
1482 {
1483 	unsigned int i;
1484 
1485 	for (i = 0; i < FORMATS; i++) {
1486 		if (-1 == formats[i].fourcc)
1487 			continue;
1488 		if (formats[i].fourcc == fourcc)
1489 			return formats+i;
1490 	}
1491 	return NULL;
1492 }
1493 
1494 /* ----------------------------------------------------------------------- */
1495 /* misc helpers                                                            */
1496 
1497 static int
1498 bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh,
1499 		    struct bttv_buffer *new)
1500 {
1501 	struct bttv_buffer *old;
1502 	unsigned long flags;
1503 
1504 	dprintk("switch_overlay: enter [new=%p]\n", new);
1505 	if (new)
1506 		new->vb.state = VIDEOBUF_DONE;
1507 	spin_lock_irqsave(&btv->s_lock,flags);
1508 	old = btv->screen;
1509 	btv->screen = new;
1510 	btv->loop_irq |= 1;
1511 	bttv_set_dma(btv, 0x03);
1512 	spin_unlock_irqrestore(&btv->s_lock,flags);
1513 	if (NULL != old) {
1514 		dprintk("switch_overlay: old=%p state is %d\n",
1515 			old, old->vb.state);
1516 		bttv_dma_free(&fh->cap,btv, old);
1517 		kfree(old);
1518 	}
1519 	if (NULL == new)
1520 		free_btres_lock(btv,fh,RESOURCE_OVERLAY);
1521 	dprintk("switch_overlay: done\n");
1522 	return 0;
1523 }
1524 
1525 /* ----------------------------------------------------------------------- */
1526 /* video4linux (1) interface                                               */
1527 
1528 static int bttv_prepare_buffer(struct videobuf_queue *q,struct bttv *btv,
1529 			       struct bttv_buffer *buf,
1530 			       const struct bttv_format *fmt,
1531 			       unsigned int width, unsigned int height,
1532 			       enum v4l2_field field)
1533 {
1534 	struct bttv_fh *fh = q->priv_data;
1535 	int redo_dma_risc = 0;
1536 	struct bttv_crop c;
1537 	int norm;
1538 	int rc;
1539 
1540 	/* check settings */
1541 	if (NULL == fmt)
1542 		return -EINVAL;
1543 	if (fmt->btformat == BT848_COLOR_FMT_RAW) {
1544 		width  = RAW_BPL;
1545 		height = RAW_LINES*2;
1546 		if (width*height > buf->vb.bsize)
1547 			return -EINVAL;
1548 		buf->vb.size = buf->vb.bsize;
1549 
1550 		/* Make sure tvnorm and vbi_end remain consistent
1551 		   until we're done. */
1552 
1553 		norm = btv->tvnorm;
1554 
1555 		/* In this mode capturing always starts at defrect.top
1556 		   (default VDELAY), ignoring cropping parameters. */
1557 		if (btv->vbi_end > bttv_tvnorms[norm].cropcap.defrect.top) {
1558 			return -EINVAL;
1559 		}
1560 
1561 		c.rect = bttv_tvnorms[norm].cropcap.defrect;
1562 	} else {
1563 		norm = btv->tvnorm;
1564 		c = btv->crop[!!fh->do_crop];
1565 
1566 		if (width < c.min_scaled_width ||
1567 		    width > c.max_scaled_width ||
1568 		    height < c.min_scaled_height)
1569 			return -EINVAL;
1570 
1571 		switch (field) {
1572 		case V4L2_FIELD_TOP:
1573 		case V4L2_FIELD_BOTTOM:
1574 		case V4L2_FIELD_ALTERNATE:
1575 			/* btv->crop counts frame lines. Max. scale
1576 			   factor is 16:1 for frames, 8:1 for fields. */
1577 			if (height * 2 > c.max_scaled_height)
1578 				return -EINVAL;
1579 			break;
1580 
1581 		default:
1582 			if (height > c.max_scaled_height)
1583 				return -EINVAL;
1584 			break;
1585 		}
1586 
1587 		buf->vb.size = (width * height * fmt->depth) >> 3;
1588 		if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
1589 			return -EINVAL;
1590 	}
1591 
1592 	/* alloc + fill struct bttv_buffer (if changed) */
1593 	if (buf->vb.width != width || buf->vb.height != height ||
1594 	    buf->vb.field != field ||
1595 	    buf->tvnorm != norm || buf->fmt != fmt ||
1596 	    buf->crop.top != c.rect.top ||
1597 	    buf->crop.left != c.rect.left ||
1598 	    buf->crop.width != c.rect.width ||
1599 	    buf->crop.height != c.rect.height) {
1600 		buf->vb.width  = width;
1601 		buf->vb.height = height;
1602 		buf->vb.field  = field;
1603 		buf->tvnorm    = norm;
1604 		buf->fmt       = fmt;
1605 		buf->crop      = c.rect;
1606 		redo_dma_risc = 1;
1607 	}
1608 
1609 	/* alloc risc memory */
1610 	if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
1611 		redo_dma_risc = 1;
1612 		if (0 != (rc = videobuf_iolock(q,&buf->vb,&btv->fbuf)))
1613 			goto fail;
1614 	}
1615 
1616 	if (redo_dma_risc)
1617 		if (0 != (rc = bttv_buffer_risc(btv,buf)))
1618 			goto fail;
1619 
1620 	buf->vb.state = VIDEOBUF_PREPARED;
1621 	return 0;
1622 
1623  fail:
1624 	bttv_dma_free(q,btv,buf);
1625 	return rc;
1626 }
1627 
1628 static int
1629 buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
1630 {
1631 	struct bttv_fh *fh = q->priv_data;
1632 
1633 	*size = fh->fmt->depth*fh->width*fh->height >> 3;
1634 	if (0 == *count)
1635 		*count = gbuffers;
1636 	if (*size * *count > gbuffers * gbufsize)
1637 		*count = (gbuffers * gbufsize) / *size;
1638 	return 0;
1639 }
1640 
1641 static int
1642 buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
1643 	       enum v4l2_field field)
1644 {
1645 	struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1646 	struct bttv_fh *fh = q->priv_data;
1647 
1648 	return bttv_prepare_buffer(q,fh->btv, buf, fh->fmt,
1649 				   fh->width, fh->height, field);
1650 }
1651 
1652 static void
1653 buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
1654 {
1655 	struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1656 	struct bttv_fh *fh = q->priv_data;
1657 	struct bttv    *btv = fh->btv;
1658 
1659 	buf->vb.state = VIDEOBUF_QUEUED;
1660 	list_add_tail(&buf->vb.queue,&btv->capture);
1661 	if (!btv->curr.frame_irq) {
1662 		btv->loop_irq |= 1;
1663 		bttv_set_dma(btv, 0x03);
1664 	}
1665 }
1666 
1667 static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
1668 {
1669 	struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1670 	struct bttv_fh *fh = q->priv_data;
1671 
1672 	bttv_dma_free(q,fh->btv,buf);
1673 }
1674 
1675 static const struct videobuf_queue_ops bttv_video_qops = {
1676 	.buf_setup    = buffer_setup,
1677 	.buf_prepare  = buffer_prepare,
1678 	.buf_queue    = buffer_queue,
1679 	.buf_release  = buffer_release,
1680 };
1681 
1682 static void radio_enable(struct bttv *btv)
1683 {
1684 	/* Switch to the radio tuner */
1685 	if (!btv->has_radio_tuner) {
1686 		btv->has_radio_tuner = 1;
1687 		bttv_call_all(btv, tuner, s_radio);
1688 		btv->audio_input = TVAUDIO_INPUT_RADIO;
1689 		audio_input(btv, btv->audio_input);
1690 	}
1691 }
1692 
1693 static int bttv_s_std(struct file *file, void *priv, v4l2_std_id id)
1694 {
1695 	struct bttv_fh *fh  = priv;
1696 	struct bttv *btv = fh->btv;
1697 	unsigned int i;
1698 
1699 	for (i = 0; i < BTTV_TVNORMS; i++)
1700 		if (id & bttv_tvnorms[i].v4l2_id)
1701 			break;
1702 	if (i == BTTV_TVNORMS)
1703 		return -EINVAL;
1704 	btv->std = id;
1705 	set_tvnorm(btv, i);
1706 	return 0;
1707 }
1708 
1709 static int bttv_g_std(struct file *file, void *priv, v4l2_std_id *id)
1710 {
1711 	struct bttv_fh *fh  = priv;
1712 	struct bttv *btv = fh->btv;
1713 
1714 	*id = btv->std;
1715 	return 0;
1716 }
1717 
1718 static int bttv_querystd(struct file *file, void *f, v4l2_std_id *id)
1719 {
1720 	struct bttv_fh *fh = f;
1721 	struct bttv *btv = fh->btv;
1722 
1723 	if (btread(BT848_DSTATUS) & BT848_DSTATUS_NUML)
1724 		*id &= V4L2_STD_625_50;
1725 	else
1726 		*id &= V4L2_STD_525_60;
1727 	return 0;
1728 }
1729 
1730 static int bttv_enum_input(struct file *file, void *priv,
1731 					struct v4l2_input *i)
1732 {
1733 	struct bttv_fh *fh = priv;
1734 	struct bttv *btv = fh->btv;
1735 
1736 	if (i->index >= bttv_tvcards[btv->c.type].video_inputs)
1737 		return -EINVAL;
1738 
1739 	i->type     = V4L2_INPUT_TYPE_CAMERA;
1740 	i->audioset = 0;
1741 
1742 	if (btv->tuner_type != TUNER_ABSENT && i->index == 0) {
1743 		sprintf(i->name, "Television");
1744 		i->type  = V4L2_INPUT_TYPE_TUNER;
1745 		i->tuner = 0;
1746 	} else if (i->index == btv->svhs) {
1747 		sprintf(i->name, "S-Video");
1748 	} else {
1749 		sprintf(i->name, "Composite%d", i->index);
1750 	}
1751 
1752 	if (i->index == btv->input) {
1753 		__u32 dstatus = btread(BT848_DSTATUS);
1754 		if (0 == (dstatus & BT848_DSTATUS_PRES))
1755 			i->status |= V4L2_IN_ST_NO_SIGNAL;
1756 		if (0 == (dstatus & BT848_DSTATUS_HLOC))
1757 			i->status |= V4L2_IN_ST_NO_H_LOCK;
1758 	}
1759 
1760 	i->std = BTTV_NORMS;
1761 	return 0;
1762 }
1763 
1764 static int bttv_g_input(struct file *file, void *priv, unsigned int *i)
1765 {
1766 	struct bttv_fh *fh = priv;
1767 	struct bttv *btv = fh->btv;
1768 
1769 	*i = btv->input;
1770 
1771 	return 0;
1772 }
1773 
1774 static int bttv_s_input(struct file *file, void *priv, unsigned int i)
1775 {
1776 	struct bttv_fh *fh  = priv;
1777 	struct bttv *btv = fh->btv;
1778 
1779 	if (i >= bttv_tvcards[btv->c.type].video_inputs)
1780 		return -EINVAL;
1781 
1782 	set_input(btv, i, btv->tvnorm);
1783 	return 0;
1784 }
1785 
1786 static int bttv_s_tuner(struct file *file, void *priv,
1787 					const struct v4l2_tuner *t)
1788 {
1789 	struct bttv_fh *fh  = priv;
1790 	struct bttv *btv = fh->btv;
1791 
1792 	if (t->index)
1793 		return -EINVAL;
1794 
1795 	bttv_call_all(btv, tuner, s_tuner, t);
1796 
1797 	if (btv->audio_mode_gpio) {
1798 		struct v4l2_tuner copy = *t;
1799 
1800 		btv->audio_mode_gpio(btv, &copy, 1);
1801 	}
1802 	return 0;
1803 }
1804 
1805 static int bttv_g_frequency(struct file *file, void *priv,
1806 					struct v4l2_frequency *f)
1807 {
1808 	struct bttv_fh *fh  = priv;
1809 	struct bttv *btv = fh->btv;
1810 
1811 	if (f->tuner)
1812 		return -EINVAL;
1813 
1814 	if (f->type == V4L2_TUNER_RADIO)
1815 		radio_enable(btv);
1816 	f->frequency = f->type == V4L2_TUNER_RADIO ?
1817 				btv->radio_freq : btv->tv_freq;
1818 
1819 	return 0;
1820 }
1821 
1822 static void bttv_set_frequency(struct bttv *btv, const struct v4l2_frequency *f)
1823 {
1824 	struct v4l2_frequency new_freq = *f;
1825 
1826 	bttv_call_all(btv, tuner, s_frequency, f);
1827 	/* s_frequency may clamp the frequency, so get the actual
1828 	   frequency before assigning radio/tv_freq. */
1829 	bttv_call_all(btv, tuner, g_frequency, &new_freq);
1830 	if (new_freq.type == V4L2_TUNER_RADIO) {
1831 		radio_enable(btv);
1832 		btv->radio_freq = new_freq.frequency;
1833 		if (btv->has_tea575x) {
1834 			btv->tea.freq = btv->radio_freq;
1835 			snd_tea575x_set_freq(&btv->tea);
1836 		}
1837 	} else {
1838 		btv->tv_freq = new_freq.frequency;
1839 	}
1840 }
1841 
1842 static int bttv_s_frequency(struct file *file, void *priv,
1843 					const struct v4l2_frequency *f)
1844 {
1845 	struct bttv_fh *fh  = priv;
1846 	struct bttv *btv = fh->btv;
1847 
1848 	if (f->tuner)
1849 		return -EINVAL;
1850 
1851 	bttv_set_frequency(btv, f);
1852 	return 0;
1853 }
1854 
1855 static int bttv_log_status(struct file *file, void *f)
1856 {
1857 	struct video_device *vdev = video_devdata(file);
1858 	struct bttv_fh *fh  = f;
1859 	struct bttv *btv = fh->btv;
1860 
1861 	v4l2_ctrl_handler_log_status(vdev->ctrl_handler, btv->c.v4l2_dev.name);
1862 	bttv_call_all(btv, core, log_status);
1863 	return 0;
1864 }
1865 
1866 #ifdef CONFIG_VIDEO_ADV_DEBUG
1867 static int bttv_g_register(struct file *file, void *f,
1868 					struct v4l2_dbg_register *reg)
1869 {
1870 	struct bttv_fh *fh = f;
1871 	struct bttv *btv = fh->btv;
1872 
1873 	/* bt848 has a 12-bit register space */
1874 	reg->reg &= 0xfff;
1875 	reg->val = btread(reg->reg);
1876 	reg->size = 1;
1877 
1878 	return 0;
1879 }
1880 
1881 static int bttv_s_register(struct file *file, void *f,
1882 					const struct v4l2_dbg_register *reg)
1883 {
1884 	struct bttv_fh *fh = f;
1885 	struct bttv *btv = fh->btv;
1886 
1887 	/* bt848 has a 12-bit register space */
1888 	btwrite(reg->val, reg->reg & 0xfff);
1889 
1890 	return 0;
1891 }
1892 #endif
1893 
1894 /* Given cropping boundaries b and the scaled width and height of a
1895    single field or frame, which must not exceed hardware limits, this
1896    function adjusts the cropping parameters c. */
1897 static void
1898 bttv_crop_adjust	(struct bttv_crop *             c,
1899 			 const struct v4l2_rect *	b,
1900 			 __s32                          width,
1901 			 __s32                          height,
1902 			 enum v4l2_field                field)
1903 {
1904 	__s32 frame_height = height << !V4L2_FIELD_HAS_BOTH(field);
1905 	__s32 max_left;
1906 	__s32 max_top;
1907 
1908 	if (width < c->min_scaled_width) {
1909 		/* Max. hor. scale factor 16:1. */
1910 		c->rect.width = width * 16;
1911 	} else if (width > c->max_scaled_width) {
1912 		/* Min. hor. scale factor 1:1. */
1913 		c->rect.width = width;
1914 
1915 		max_left = b->left + b->width - width;
1916 		max_left = min(max_left, (__s32) MAX_HDELAY);
1917 		if (c->rect.left > max_left)
1918 			c->rect.left = max_left;
1919 	}
1920 
1921 	if (height < c->min_scaled_height) {
1922 		/* Max. vert. scale factor 16:1, single fields 8:1. */
1923 		c->rect.height = height * 16;
1924 	} else if (frame_height > c->max_scaled_height) {
1925 		/* Min. vert. scale factor 1:1.
1926 		   Top and height count field lines times two. */
1927 		c->rect.height = (frame_height + 1) & ~1;
1928 
1929 		max_top = b->top + b->height - c->rect.height;
1930 		if (c->rect.top > max_top)
1931 			c->rect.top = max_top;
1932 	}
1933 
1934 	bttv_crop_calc_limits(c);
1935 }
1936 
1937 /* Returns an error if scaling to a frame or single field with the given
1938    width and height is not possible with the current cropping parameters
1939    and width aligned according to width_mask. If adjust_size is TRUE the
1940    function may adjust the width and/or height instead, rounding width
1941    to (width + width_bias) & width_mask. If adjust_crop is TRUE it may
1942    also adjust the current cropping parameters to get closer to the
1943    desired image size. */
1944 static int
1945 limit_scaled_size_lock       (struct bttv_fh *               fh,
1946 			 __s32 *                        width,
1947 			 __s32 *                        height,
1948 			 enum v4l2_field                field,
1949 			 unsigned int			width_mask,
1950 			 unsigned int			width_bias,
1951 			 int                            adjust_size,
1952 			 int                            adjust_crop)
1953 {
1954 	struct bttv *btv = fh->btv;
1955 	const struct v4l2_rect *b;
1956 	struct bttv_crop *c;
1957 	__s32 min_width;
1958 	__s32 min_height;
1959 	__s32 max_width;
1960 	__s32 max_height;
1961 	int rc;
1962 
1963 	BUG_ON((int) width_mask >= 0 ||
1964 	       width_bias >= (unsigned int) -width_mask);
1965 
1966 	/* Make sure tvnorm, vbi_end and the current cropping parameters
1967 	   remain consistent until we're done. */
1968 
1969 	b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
1970 
1971 	/* Do crop - use current, don't - use default parameters. */
1972 	c = &btv->crop[!!fh->do_crop];
1973 
1974 	if (fh->do_crop
1975 	    && adjust_size
1976 	    && adjust_crop
1977 	    && !locked_btres(btv, VIDEO_RESOURCES)) {
1978 		min_width = 48;
1979 		min_height = 32;
1980 
1981 		/* We cannot scale up. When the scaled image is larger
1982 		   than crop.rect we adjust the crop.rect as required
1983 		   by the V4L2 spec, hence cropcap.bounds are our limit. */
1984 		max_width = min_t(unsigned int, b->width, MAX_HACTIVE);
1985 		max_height = b->height;
1986 
1987 		/* We cannot capture the same line as video and VBI data.
1988 		   Note btv->vbi_end is really a minimum, see
1989 		   bttv_vbi_try_fmt(). */
1990 		if (btv->vbi_end > b->top) {
1991 			max_height -= btv->vbi_end - b->top;
1992 			rc = -EBUSY;
1993 			if (min_height > max_height)
1994 				goto fail;
1995 		}
1996 	} else {
1997 		rc = -EBUSY;
1998 		if (btv->vbi_end > c->rect.top)
1999 			goto fail;
2000 
2001 		min_width  = c->min_scaled_width;
2002 		min_height = c->min_scaled_height;
2003 		max_width  = c->max_scaled_width;
2004 		max_height = c->max_scaled_height;
2005 
2006 		adjust_crop = 0;
2007 	}
2008 
2009 	min_width = (min_width - width_mask - 1) & width_mask;
2010 	max_width = max_width & width_mask;
2011 
2012 	/* Max. scale factor is 16:1 for frames, 8:1 for fields. */
2013 	/* Min. scale factor is 1:1. */
2014 	max_height >>= !V4L2_FIELD_HAS_BOTH(field);
2015 
2016 	if (adjust_size) {
2017 		*width = clamp(*width, min_width, max_width);
2018 		*height = clamp(*height, min_height, max_height);
2019 
2020 		/* Round after clamping to avoid overflow. */
2021 		*width = (*width + width_bias) & width_mask;
2022 
2023 		if (adjust_crop) {
2024 			bttv_crop_adjust(c, b, *width, *height, field);
2025 
2026 			if (btv->vbi_end > c->rect.top) {
2027 				/* Move the crop window out of the way. */
2028 				c->rect.top = btv->vbi_end;
2029 			}
2030 		}
2031 	} else {
2032 		rc = -EINVAL;
2033 		if (*width  < min_width ||
2034 		    *height < min_height ||
2035 		    *width  > max_width ||
2036 		    *height > max_height ||
2037 		    0 != (*width & ~width_mask))
2038 			goto fail;
2039 	}
2040 
2041 	rc = 0; /* success */
2042 
2043  fail:
2044 
2045 	return rc;
2046 }
2047 
2048 /* Returns an error if the given overlay window dimensions are not
2049    possible with the current cropping parameters. If adjust_size is
2050    TRUE the function may adjust the window width and/or height
2051    instead, however it always rounds the horizontal position and
2052    width as btcx_align() does. If adjust_crop is TRUE the function
2053    may also adjust the current cropping parameters to get closer
2054    to the desired window size. */
2055 static int
2056 verify_window_lock(struct bttv_fh *fh, struct v4l2_window *win,
2057 			 int adjust_size, int adjust_crop)
2058 {
2059 	enum v4l2_field field;
2060 	unsigned int width_mask;
2061 
2062 	if (win->w.width < 48)
2063 		win->w.width = 48;
2064 	if (win->w.height < 32)
2065 		win->w.height = 32;
2066 	if (win->clipcount > 2048)
2067 		win->clipcount = 2048;
2068 
2069 	win->chromakey = 0;
2070 	win->global_alpha = 0;
2071 	field = win->field;
2072 
2073 	switch (field) {
2074 	case V4L2_FIELD_TOP:
2075 	case V4L2_FIELD_BOTTOM:
2076 	case V4L2_FIELD_INTERLACED:
2077 		break;
2078 	default:
2079 		field = V4L2_FIELD_ANY;
2080 		break;
2081 	}
2082 	if (V4L2_FIELD_ANY == field) {
2083 		__s32 height2;
2084 
2085 		height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1;
2086 		field = (win->w.height > height2)
2087 			? V4L2_FIELD_INTERLACED
2088 			: V4L2_FIELD_TOP;
2089 	}
2090 	win->field = field;
2091 
2092 	if (NULL == fh->ovfmt)
2093 		return -EINVAL;
2094 	/* 4-byte alignment. */
2095 	width_mask = ~0;
2096 	switch (fh->ovfmt->depth) {
2097 	case 8:
2098 	case 24:
2099 		width_mask = ~3;
2100 		break;
2101 	case 16:
2102 		width_mask = ~1;
2103 		break;
2104 	case 32:
2105 		break;
2106 	default:
2107 		BUG();
2108 	}
2109 
2110 	win->w.width -= win->w.left & ~width_mask;
2111 	win->w.left = (win->w.left - width_mask - 1) & width_mask;
2112 
2113 	return limit_scaled_size_lock(fh, &win->w.width, &win->w.height,
2114 				      field, width_mask,
2115 				      /* width_bias: round down */ 0,
2116 				      adjust_size, adjust_crop);
2117 }
2118 
2119 static int setup_window_lock(struct bttv_fh *fh, struct bttv *btv,
2120 			struct v4l2_window *win, int fixup)
2121 {
2122 	struct v4l2_clip *clips = NULL;
2123 	int n,size,retval = 0;
2124 
2125 	if (NULL == fh->ovfmt)
2126 		return -EINVAL;
2127 	if (!(fh->ovfmt->flags & FORMAT_FLAGS_PACKED))
2128 		return -EINVAL;
2129 	retval = verify_window_lock(fh, win,
2130 			       /* adjust_size */ fixup,
2131 			       /* adjust_crop */ fixup);
2132 	if (0 != retval)
2133 		return retval;
2134 
2135 	/* copy clips  --  luckily v4l1 + v4l2 are binary
2136 	   compatible here ...*/
2137 	n = win->clipcount;
2138 	size = sizeof(*clips)*(n+4);
2139 	clips = kmalloc(size,GFP_KERNEL);
2140 	if (NULL == clips)
2141 		return -ENOMEM;
2142 	if (n > 0)
2143 		memcpy(clips, win->clips, sizeof(struct v4l2_clip) * n);
2144 
2145 	/* clip against screen */
2146 	if (NULL != btv->fbuf.base)
2147 		n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height,
2148 				      &win->w, clips, n);
2149 	btcx_sort_clips(clips,n);
2150 
2151 	/* 4-byte alignments */
2152 	switch (fh->ovfmt->depth) {
2153 	case 8:
2154 	case 24:
2155 		btcx_align(&win->w, clips, n, 3);
2156 		break;
2157 	case 16:
2158 		btcx_align(&win->w, clips, n, 1);
2159 		break;
2160 	case 32:
2161 		/* no alignment fixups needed */
2162 		break;
2163 	default:
2164 		BUG();
2165 	}
2166 
2167 	kfree(fh->ov.clips);
2168 	fh->ov.clips    = clips;
2169 	fh->ov.nclips   = n;
2170 
2171 	fh->ov.w        = win->w;
2172 	fh->ov.field    = win->field;
2173 	fh->ov.setup_ok = 1;
2174 
2175 	btv->init.ov.w.width   = win->w.width;
2176 	btv->init.ov.w.height  = win->w.height;
2177 	btv->init.ov.field     = win->field;
2178 
2179 	/* update overlay if needed */
2180 	retval = 0;
2181 	if (check_btres(fh, RESOURCE_OVERLAY)) {
2182 		struct bttv_buffer *new;
2183 
2184 		new = videobuf_sg_alloc(sizeof(*new));
2185 		new->crop = btv->crop[!!fh->do_crop].rect;
2186 		bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2187 		retval = bttv_switch_overlay(btv,fh,new);
2188 	}
2189 	return retval;
2190 }
2191 
2192 /* ----------------------------------------------------------------------- */
2193 
2194 static struct videobuf_queue* bttv_queue(struct bttv_fh *fh)
2195 {
2196 	struct videobuf_queue* q = NULL;
2197 
2198 	switch (fh->type) {
2199 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2200 		q = &fh->cap;
2201 		break;
2202 	case V4L2_BUF_TYPE_VBI_CAPTURE:
2203 		q = &fh->vbi;
2204 		break;
2205 	default:
2206 		BUG();
2207 	}
2208 	return q;
2209 }
2210 
2211 static int bttv_resource(struct bttv_fh *fh)
2212 {
2213 	int res = 0;
2214 
2215 	switch (fh->type) {
2216 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2217 		res = RESOURCE_VIDEO_STREAM;
2218 		break;
2219 	case V4L2_BUF_TYPE_VBI_CAPTURE:
2220 		res = RESOURCE_VBI;
2221 		break;
2222 	default:
2223 		BUG();
2224 	}
2225 	return res;
2226 }
2227 
2228 static int bttv_switch_type(struct bttv_fh *fh, enum v4l2_buf_type type)
2229 {
2230 	struct videobuf_queue *q = bttv_queue(fh);
2231 	int res = bttv_resource(fh);
2232 
2233 	if (check_btres(fh,res))
2234 		return -EBUSY;
2235 	if (videobuf_queue_is_busy(q))
2236 		return -EBUSY;
2237 	fh->type = type;
2238 	return 0;
2239 }
2240 
2241 static void
2242 pix_format_set_size     (struct v4l2_pix_format *       f,
2243 			 const struct bttv_format *     fmt,
2244 			 unsigned int                   width,
2245 			 unsigned int                   height)
2246 {
2247 	f->width = width;
2248 	f->height = height;
2249 
2250 	if (fmt->flags & FORMAT_FLAGS_PLANAR) {
2251 		f->bytesperline = width; /* Y plane */
2252 		f->sizeimage = (width * height * fmt->depth) >> 3;
2253 	} else {
2254 		f->bytesperline = (width * fmt->depth) >> 3;
2255 		f->sizeimage = height * f->bytesperline;
2256 	}
2257 }
2258 
2259 static int bttv_g_fmt_vid_cap(struct file *file, void *priv,
2260 					struct v4l2_format *f)
2261 {
2262 	struct bttv_fh *fh  = priv;
2263 
2264 	pix_format_set_size(&f->fmt.pix, fh->fmt,
2265 				fh->width, fh->height);
2266 	f->fmt.pix.field        = fh->cap.field;
2267 	f->fmt.pix.pixelformat  = fh->fmt->fourcc;
2268 	f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
2269 
2270 	return 0;
2271 }
2272 
2273 static int bttv_g_fmt_vid_overlay(struct file *file, void *priv,
2274 					struct v4l2_format *f)
2275 {
2276 	struct bttv_fh *fh  = priv;
2277 
2278 	f->fmt.win.w     = fh->ov.w;
2279 	f->fmt.win.field = fh->ov.field;
2280 
2281 	return 0;
2282 }
2283 
2284 static void bttv_get_width_mask_vid_cap(const struct bttv_format *fmt,
2285 					unsigned int *width_mask,
2286 					unsigned int *width_bias)
2287 {
2288 	if (fmt->flags & FORMAT_FLAGS_PLANAR) {
2289 		*width_mask = ~15; /* width must be a multiple of 16 pixels */
2290 		*width_bias = 8;   /* nearest */
2291 	} else {
2292 		*width_mask = ~3; /* width must be a multiple of 4 pixels */
2293 		*width_bias = 2;  /* nearest */
2294 	}
2295 }
2296 
2297 static int bttv_try_fmt_vid_cap(struct file *file, void *priv,
2298 						struct v4l2_format *f)
2299 {
2300 	const struct bttv_format *fmt;
2301 	struct bttv_fh *fh = priv;
2302 	struct bttv *btv = fh->btv;
2303 	enum v4l2_field field;
2304 	__s32 width, height;
2305 	__s32 height2;
2306 	unsigned int width_mask, width_bias;
2307 	int rc;
2308 
2309 	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2310 	if (NULL == fmt)
2311 		return -EINVAL;
2312 
2313 	field = f->fmt.pix.field;
2314 
2315 	switch (field) {
2316 	case V4L2_FIELD_TOP:
2317 	case V4L2_FIELD_BOTTOM:
2318 	case V4L2_FIELD_ALTERNATE:
2319 	case V4L2_FIELD_INTERLACED:
2320 		break;
2321 	case V4L2_FIELD_SEQ_BT:
2322 	case V4L2_FIELD_SEQ_TB:
2323 		if (!(fmt->flags & FORMAT_FLAGS_PLANAR)) {
2324 			field = V4L2_FIELD_SEQ_TB;
2325 			break;
2326 		}
2327 		fallthrough;
2328 	default: /* FIELD_ANY case */
2329 		height2 = btv->crop[!!fh->do_crop].rect.height >> 1;
2330 		field = (f->fmt.pix.height > height2)
2331 			? V4L2_FIELD_INTERLACED
2332 			: V4L2_FIELD_BOTTOM;
2333 		break;
2334 	}
2335 
2336 	width = f->fmt.pix.width;
2337 	height = f->fmt.pix.height;
2338 
2339 	bttv_get_width_mask_vid_cap(fmt, &width_mask, &width_bias);
2340 	rc = limit_scaled_size_lock(fh, &width, &height, field,
2341 			       width_mask, width_bias,
2342 			       /* adjust_size */ 1,
2343 			       /* adjust_crop */ 0);
2344 	if (0 != rc)
2345 		return rc;
2346 
2347 	/* update data for the application */
2348 	f->fmt.pix.field = field;
2349 	pix_format_set_size(&f->fmt.pix, fmt, width, height);
2350 	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
2351 
2352 	return 0;
2353 }
2354 
2355 static int bttv_try_fmt_vid_overlay(struct file *file, void *priv,
2356 						struct v4l2_format *f)
2357 {
2358 	struct bttv_fh *fh = priv;
2359 
2360 	verify_window_lock(fh, &f->fmt.win,
2361 			/* adjust_size */ 1,
2362 			/* adjust_crop */ 0);
2363 	return 0;
2364 }
2365 
2366 static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
2367 				struct v4l2_format *f)
2368 {
2369 	int retval;
2370 	const struct bttv_format *fmt;
2371 	struct bttv_fh *fh = priv;
2372 	struct bttv *btv = fh->btv;
2373 	__s32 width, height;
2374 	unsigned int width_mask, width_bias;
2375 	enum v4l2_field field;
2376 
2377 	retval = bttv_switch_type(fh, f->type);
2378 	if (0 != retval)
2379 		return retval;
2380 
2381 	retval = bttv_try_fmt_vid_cap(file, priv, f);
2382 	if (0 != retval)
2383 		return retval;
2384 
2385 	width = f->fmt.pix.width;
2386 	height = f->fmt.pix.height;
2387 	field = f->fmt.pix.field;
2388 
2389 	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2390 	bttv_get_width_mask_vid_cap(fmt, &width_mask, &width_bias);
2391 	retval = limit_scaled_size_lock(fh, &width, &height, f->fmt.pix.field,
2392 			       width_mask, width_bias,
2393 			       /* adjust_size */ 1,
2394 			       /* adjust_crop */ 1);
2395 	if (0 != retval)
2396 		return retval;
2397 
2398 	f->fmt.pix.field = field;
2399 
2400 	/* update our state information */
2401 	fh->fmt              = fmt;
2402 	fh->cap.field        = f->fmt.pix.field;
2403 	fh->cap.last         = V4L2_FIELD_NONE;
2404 	fh->width            = f->fmt.pix.width;
2405 	fh->height           = f->fmt.pix.height;
2406 	btv->init.fmt        = fmt;
2407 	btv->init.width      = f->fmt.pix.width;
2408 	btv->init.height     = f->fmt.pix.height;
2409 
2410 	return 0;
2411 }
2412 
2413 static int bttv_s_fmt_vid_overlay(struct file *file, void *priv,
2414 				struct v4l2_format *f)
2415 {
2416 	struct bttv_fh *fh = priv;
2417 	struct bttv *btv = fh->btv;
2418 
2419 	if (no_overlay > 0) {
2420 		pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
2421 		return -EINVAL;
2422 	}
2423 
2424 	return setup_window_lock(fh, btv, &f->fmt.win, 1);
2425 }
2426 
2427 static int bttv_querycap(struct file *file, void  *priv,
2428 				struct v4l2_capability *cap)
2429 {
2430 	struct bttv_fh *fh = priv;
2431 	struct bttv *btv = fh->btv;
2432 
2433 	if (0 == v4l2)
2434 		return -EINVAL;
2435 
2436 	strscpy(cap->driver, "bttv", sizeof(cap->driver));
2437 	strscpy(cap->card, btv->video_dev.name, sizeof(cap->card));
2438 	snprintf(cap->bus_info, sizeof(cap->bus_info),
2439 		 "PCI:%s", pci_name(btv->c.pci));
2440 	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
2441 			    V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
2442 	if (no_overlay <= 0)
2443 		cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;
2444 	if (video_is_registered(&btv->vbi_dev))
2445 		cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
2446 	if (video_is_registered(&btv->radio_dev)) {
2447 		cap->capabilities |= V4L2_CAP_RADIO;
2448 		if (btv->has_tea575x)
2449 			cap->capabilities |= V4L2_CAP_HW_FREQ_SEEK;
2450 	}
2451 
2452 	/*
2453 	 * No need to lock here: those vars are initialized during board
2454 	 * probe and remains untouched during the rest of the driver lifecycle
2455 	 */
2456 	if (btv->has_saa6588)
2457 		cap->capabilities |= V4L2_CAP_RDS_CAPTURE;
2458 	if (btv->tuner_type != TUNER_ABSENT)
2459 		cap->capabilities |= V4L2_CAP_TUNER;
2460 	return 0;
2461 }
2462 
2463 static int bttv_enum_fmt_cap_ovr(struct v4l2_fmtdesc *f)
2464 {
2465 	int index = -1, i;
2466 
2467 	for (i = 0; i < FORMATS; i++) {
2468 		if (formats[i].fourcc != -1)
2469 			index++;
2470 		if ((unsigned int)index == f->index)
2471 			break;
2472 	}
2473 	if (FORMATS == i)
2474 		return -EINVAL;
2475 
2476 	f->pixelformat = formats[i].fourcc;
2477 
2478 	return i;
2479 }
2480 
2481 static int bttv_enum_fmt_vid_cap(struct file *file, void  *priv,
2482 				struct v4l2_fmtdesc *f)
2483 {
2484 	int rc = bttv_enum_fmt_cap_ovr(f);
2485 
2486 	if (rc < 0)
2487 		return rc;
2488 
2489 	return 0;
2490 }
2491 
2492 static int bttv_enum_fmt_vid_overlay(struct file *file, void  *priv,
2493 					struct v4l2_fmtdesc *f)
2494 {
2495 	int rc;
2496 
2497 	if (no_overlay > 0) {
2498 		pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
2499 		return -EINVAL;
2500 	}
2501 
2502 	rc = bttv_enum_fmt_cap_ovr(f);
2503 
2504 	if (rc < 0)
2505 		return rc;
2506 
2507 	if (!(formats[rc].flags & FORMAT_FLAGS_PACKED))
2508 		return -EINVAL;
2509 
2510 	return 0;
2511 }
2512 
2513 static int bttv_g_fbuf(struct file *file, void *f,
2514 				struct v4l2_framebuffer *fb)
2515 {
2516 	struct bttv_fh *fh = f;
2517 	struct bttv *btv = fh->btv;
2518 
2519 	*fb = btv->fbuf;
2520 	fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
2521 	fb->flags = V4L2_FBUF_FLAG_PRIMARY;
2522 	if (fh->ovfmt)
2523 		fb->fmt.pixelformat  = fh->ovfmt->fourcc;
2524 	return 0;
2525 }
2526 
2527 static int bttv_overlay(struct file *file, void *f, unsigned int on)
2528 {
2529 	struct bttv_fh *fh = f;
2530 	struct bttv *btv = fh->btv;
2531 	struct bttv_buffer *new;
2532 	int retval = 0;
2533 
2534 	if (on) {
2535 		/* verify args */
2536 		if (unlikely(!btv->fbuf.base)) {
2537 			return -EINVAL;
2538 		}
2539 		if (unlikely(!fh->ov.setup_ok)) {
2540 			dprintk("%d: overlay: !setup_ok\n", btv->c.nr);
2541 			retval = -EINVAL;
2542 		}
2543 		if (retval)
2544 			return retval;
2545 	}
2546 
2547 	if (!check_alloc_btres_lock(btv, fh, RESOURCE_OVERLAY))
2548 		return -EBUSY;
2549 
2550 	if (on) {
2551 		fh->ov.tvnorm = btv->tvnorm;
2552 		new = videobuf_sg_alloc(sizeof(*new));
2553 		new->crop = btv->crop[!!fh->do_crop].rect;
2554 		bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2555 	} else {
2556 		new = NULL;
2557 	}
2558 
2559 	/* switch over */
2560 	retval = bttv_switch_overlay(btv, fh, new);
2561 	return retval;
2562 }
2563 
2564 static int bttv_s_fbuf(struct file *file, void *f,
2565 				const struct v4l2_framebuffer *fb)
2566 {
2567 	struct bttv_fh *fh = f;
2568 	struct bttv *btv = fh->btv;
2569 	const struct bttv_format *fmt;
2570 	int retval;
2571 
2572 	if (!capable(CAP_SYS_ADMIN) &&
2573 		!capable(CAP_SYS_RAWIO))
2574 		return -EPERM;
2575 
2576 	/* check args */
2577 	fmt = format_by_fourcc(fb->fmt.pixelformat);
2578 	if (NULL == fmt)
2579 		return -EINVAL;
2580 	if (0 == (fmt->flags & FORMAT_FLAGS_PACKED))
2581 		return -EINVAL;
2582 
2583 	retval = -EINVAL;
2584 	if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
2585 		__s32 width = fb->fmt.width;
2586 		__s32 height = fb->fmt.height;
2587 
2588 		retval = limit_scaled_size_lock(fh, &width, &height,
2589 					   V4L2_FIELD_INTERLACED,
2590 					   /* width_mask */ ~3,
2591 					   /* width_bias */ 2,
2592 					   /* adjust_size */ 0,
2593 					   /* adjust_crop */ 0);
2594 		if (0 != retval)
2595 			return retval;
2596 	}
2597 
2598 	/* ok, accept it */
2599 	btv->fbuf.base       = fb->base;
2600 	btv->fbuf.fmt.width  = fb->fmt.width;
2601 	btv->fbuf.fmt.height = fb->fmt.height;
2602 	if (0 != fb->fmt.bytesperline)
2603 		btv->fbuf.fmt.bytesperline = fb->fmt.bytesperline;
2604 	else
2605 		btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fmt->depth/8;
2606 
2607 	retval = 0;
2608 	fh->ovfmt = fmt;
2609 	btv->init.ovfmt = fmt;
2610 	if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
2611 		fh->ov.w.left   = 0;
2612 		fh->ov.w.top    = 0;
2613 		fh->ov.w.width  = fb->fmt.width;
2614 		fh->ov.w.height = fb->fmt.height;
2615 		btv->init.ov.w.width  = fb->fmt.width;
2616 		btv->init.ov.w.height = fb->fmt.height;
2617 
2618 		kfree(fh->ov.clips);
2619 		fh->ov.clips = NULL;
2620 		fh->ov.nclips = 0;
2621 
2622 		if (check_btres(fh, RESOURCE_OVERLAY)) {
2623 			struct bttv_buffer *new;
2624 
2625 			new = videobuf_sg_alloc(sizeof(*new));
2626 			new->crop = btv->crop[!!fh->do_crop].rect;
2627 			bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2628 			retval = bttv_switch_overlay(btv, fh, new);
2629 		}
2630 	}
2631 	return retval;
2632 }
2633 
2634 static int bttv_reqbufs(struct file *file, void *priv,
2635 				struct v4l2_requestbuffers *p)
2636 {
2637 	struct bttv_fh *fh = priv;
2638 	return videobuf_reqbufs(bttv_queue(fh), p);
2639 }
2640 
2641 static int bttv_querybuf(struct file *file, void *priv,
2642 				struct v4l2_buffer *b)
2643 {
2644 	struct bttv_fh *fh = priv;
2645 	return videobuf_querybuf(bttv_queue(fh), b);
2646 }
2647 
2648 static int bttv_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
2649 {
2650 	struct bttv_fh *fh = priv;
2651 	struct bttv *btv = fh->btv;
2652 	int res = bttv_resource(fh);
2653 
2654 	if (!check_alloc_btres_lock(btv, fh, res))
2655 		return -EBUSY;
2656 
2657 	return videobuf_qbuf(bttv_queue(fh), b);
2658 }
2659 
2660 static int bttv_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
2661 {
2662 	struct bttv_fh *fh = priv;
2663 	return videobuf_dqbuf(bttv_queue(fh), b,
2664 			file->f_flags & O_NONBLOCK);
2665 }
2666 
2667 static int bttv_streamon(struct file *file, void *priv,
2668 					enum v4l2_buf_type type)
2669 {
2670 	struct bttv_fh *fh = priv;
2671 	struct bttv *btv = fh->btv;
2672 	int res = bttv_resource(fh);
2673 
2674 	if (!check_alloc_btres_lock(btv, fh, res))
2675 		return -EBUSY;
2676 	return videobuf_streamon(bttv_queue(fh));
2677 }
2678 
2679 
2680 static int bttv_streamoff(struct file *file, void *priv,
2681 					enum v4l2_buf_type type)
2682 {
2683 	struct bttv_fh *fh = priv;
2684 	struct bttv *btv = fh->btv;
2685 	int retval;
2686 	int res = bttv_resource(fh);
2687 
2688 
2689 	retval = videobuf_streamoff(bttv_queue(fh));
2690 	if (retval < 0)
2691 		return retval;
2692 	free_btres_lock(btv, fh, res);
2693 	return 0;
2694 }
2695 
2696 static int bttv_g_parm(struct file *file, void *f,
2697 				struct v4l2_streamparm *parm)
2698 {
2699 	struct bttv_fh *fh = f;
2700 	struct bttv *btv = fh->btv;
2701 
2702 	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2703 		return -EINVAL;
2704 	parm->parm.capture.readbuffers = gbuffers;
2705 	v4l2_video_std_frame_period(bttv_tvnorms[btv->tvnorm].v4l2_id,
2706 				    &parm->parm.capture.timeperframe);
2707 
2708 	return 0;
2709 }
2710 
2711 static int bttv_g_tuner(struct file *file, void *priv,
2712 				struct v4l2_tuner *t)
2713 {
2714 	struct bttv_fh *fh = priv;
2715 	struct bttv *btv = fh->btv;
2716 
2717 	if (0 != t->index)
2718 		return -EINVAL;
2719 
2720 	t->rxsubchans = V4L2_TUNER_SUB_MONO;
2721 	t->capability = V4L2_TUNER_CAP_NORM;
2722 	bttv_call_all(btv, tuner, g_tuner, t);
2723 	strscpy(t->name, "Television", sizeof(t->name));
2724 	t->type       = V4L2_TUNER_ANALOG_TV;
2725 	if (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC)
2726 		t->signal = 0xffff;
2727 
2728 	if (btv->audio_mode_gpio)
2729 		btv->audio_mode_gpio(btv, t, 0);
2730 
2731 	return 0;
2732 }
2733 
2734 static int bttv_g_pixelaspect(struct file *file, void *priv,
2735 			      int type, struct v4l2_fract *f)
2736 {
2737 	struct bttv_fh *fh = priv;
2738 	struct bttv *btv = fh->btv;
2739 
2740 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2741 		return -EINVAL;
2742 
2743 	/* defrect and bounds are set via g_selection */
2744 	*f = bttv_tvnorms[btv->tvnorm].cropcap.pixelaspect;
2745 	return 0;
2746 }
2747 
2748 static int bttv_g_selection(struct file *file, void *f, struct v4l2_selection *sel)
2749 {
2750 	struct bttv_fh *fh = f;
2751 	struct bttv *btv = fh->btv;
2752 
2753 	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2754 	    sel->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
2755 		return -EINVAL;
2756 
2757 	switch (sel->target) {
2758 	case V4L2_SEL_TGT_CROP:
2759 		/*
2760 		 * No fh->do_crop = 1; because btv->crop[1] may be
2761 		 * inconsistent with fh->width or fh->height and apps
2762 		 * do not expect a change here.
2763 		 */
2764 		sel->r = btv->crop[!!fh->do_crop].rect;
2765 		break;
2766 	case V4L2_SEL_TGT_CROP_DEFAULT:
2767 		sel->r = bttv_tvnorms[btv->tvnorm].cropcap.defrect;
2768 		break;
2769 	case V4L2_SEL_TGT_CROP_BOUNDS:
2770 		sel->r = bttv_tvnorms[btv->tvnorm].cropcap.bounds;
2771 		break;
2772 	default:
2773 		return -EINVAL;
2774 	}
2775 
2776 	return 0;
2777 }
2778 
2779 static int bttv_s_selection(struct file *file, void *f, struct v4l2_selection *sel)
2780 {
2781 	struct bttv_fh *fh = f;
2782 	struct bttv *btv = fh->btv;
2783 	const struct v4l2_rect *b;
2784 	int retval;
2785 	struct bttv_crop c;
2786 	__s32 b_left;
2787 	__s32 b_top;
2788 	__s32 b_right;
2789 	__s32 b_bottom;
2790 
2791 	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2792 	    sel->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
2793 		return -EINVAL;
2794 
2795 	if (sel->target != V4L2_SEL_TGT_CROP)
2796 		return -EINVAL;
2797 
2798 	/* Make sure tvnorm, vbi_end and the current cropping
2799 	   parameters remain consistent until we're done. Note
2800 	   read() may change vbi_end in check_alloc_btres_lock(). */
2801 	retval = -EBUSY;
2802 
2803 	if (locked_btres(fh->btv, VIDEO_RESOURCES)) {
2804 		return retval;
2805 	}
2806 
2807 	b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
2808 
2809 	b_left = b->left;
2810 	b_right = b_left + b->width;
2811 	b_bottom = b->top + b->height;
2812 
2813 	b_top = max(b->top, btv->vbi_end);
2814 	if (b_top + 32 >= b_bottom) {
2815 		return retval;
2816 	}
2817 
2818 	/* Min. scaled size 48 x 32. */
2819 	c.rect.left = clamp_t(s32, sel->r.left, b_left, b_right - 48);
2820 	c.rect.left = min(c.rect.left, (__s32) MAX_HDELAY);
2821 
2822 	c.rect.width = clamp_t(s32, sel->r.width,
2823 			     48, b_right - c.rect.left);
2824 
2825 	c.rect.top = clamp_t(s32, sel->r.top, b_top, b_bottom - 32);
2826 	/* Top and height must be a multiple of two. */
2827 	c.rect.top = (c.rect.top + 1) & ~1;
2828 
2829 	c.rect.height = clamp_t(s32, sel->r.height,
2830 			      32, b_bottom - c.rect.top);
2831 	c.rect.height = (c.rect.height + 1) & ~1;
2832 
2833 	bttv_crop_calc_limits(&c);
2834 
2835 	sel->r = c.rect;
2836 
2837 	btv->crop[1] = c;
2838 
2839 	fh->do_crop = 1;
2840 
2841 	if (fh->width < c.min_scaled_width) {
2842 		fh->width = c.min_scaled_width;
2843 		btv->init.width = c.min_scaled_width;
2844 	} else if (fh->width > c.max_scaled_width) {
2845 		fh->width = c.max_scaled_width;
2846 		btv->init.width = c.max_scaled_width;
2847 	}
2848 
2849 	if (fh->height < c.min_scaled_height) {
2850 		fh->height = c.min_scaled_height;
2851 		btv->init.height = c.min_scaled_height;
2852 	} else if (fh->height > c.max_scaled_height) {
2853 		fh->height = c.max_scaled_height;
2854 		btv->init.height = c.max_scaled_height;
2855 	}
2856 
2857 	return 0;
2858 }
2859 
2860 static ssize_t bttv_read(struct file *file, char __user *data,
2861 			 size_t count, loff_t *ppos)
2862 {
2863 	struct bttv_fh *fh = file->private_data;
2864 	int retval = 0;
2865 
2866 	if (fh->btv->errors)
2867 		bttv_reinit_bt848(fh->btv);
2868 	dprintk("%d: read count=%d type=%s\n",
2869 		fh->btv->c.nr, (int)count, v4l2_type_names[fh->type]);
2870 
2871 	switch (fh->type) {
2872 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2873 		if (!check_alloc_btres_lock(fh->btv, fh, RESOURCE_VIDEO_READ)) {
2874 			/* VIDEO_READ in use by another fh,
2875 			   or VIDEO_STREAM by any fh. */
2876 			return -EBUSY;
2877 		}
2878 		retval = videobuf_read_one(&fh->cap, data, count, ppos,
2879 					   file->f_flags & O_NONBLOCK);
2880 		free_btres_lock(fh->btv, fh, RESOURCE_VIDEO_READ);
2881 		break;
2882 	case V4L2_BUF_TYPE_VBI_CAPTURE:
2883 		if (!check_alloc_btres_lock(fh->btv,fh,RESOURCE_VBI))
2884 			return -EBUSY;
2885 		retval = videobuf_read_stream(&fh->vbi, data, count, ppos, 1,
2886 					      file->f_flags & O_NONBLOCK);
2887 		break;
2888 	default:
2889 		BUG();
2890 	}
2891 	return retval;
2892 }
2893 
2894 static __poll_t bttv_poll(struct file *file, poll_table *wait)
2895 {
2896 	struct bttv_fh *fh = file->private_data;
2897 	struct bttv_buffer *buf;
2898 	enum v4l2_field field;
2899 	__poll_t rc = 0;
2900 	__poll_t req_events = poll_requested_events(wait);
2901 
2902 	if (v4l2_event_pending(&fh->fh))
2903 		rc = EPOLLPRI;
2904 	else if (req_events & EPOLLPRI)
2905 		poll_wait(file, &fh->fh.wait, wait);
2906 
2907 	if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
2908 		return rc;
2909 
2910 	if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
2911 		if (!check_alloc_btres_lock(fh->btv,fh,RESOURCE_VBI))
2912 			return rc | EPOLLERR;
2913 		return rc | videobuf_poll_stream(file, &fh->vbi, wait);
2914 	}
2915 
2916 	if (check_btres(fh,RESOURCE_VIDEO_STREAM)) {
2917 		/* streaming capture */
2918 		if (list_empty(&fh->cap.stream))
2919 			return rc | EPOLLERR;
2920 		buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream);
2921 	} else {
2922 		/* read() capture */
2923 		if (NULL == fh->cap.read_buf) {
2924 			/* need to capture a new frame */
2925 			if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM))
2926 				return rc | EPOLLERR;
2927 			fh->cap.read_buf = videobuf_sg_alloc(fh->cap.msize);
2928 			if (NULL == fh->cap.read_buf)
2929 				return rc | EPOLLERR;
2930 			fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
2931 			field = videobuf_next_field(&fh->cap);
2932 			if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) {
2933 				kfree (fh->cap.read_buf);
2934 				fh->cap.read_buf = NULL;
2935 				return rc | EPOLLERR;
2936 			}
2937 			fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf);
2938 			fh->cap.read_off = 0;
2939 		}
2940 		buf = (struct bttv_buffer*)fh->cap.read_buf;
2941 	}
2942 
2943 	poll_wait(file, &buf->vb.done, wait);
2944 	if (buf->vb.state == VIDEOBUF_DONE ||
2945 	    buf->vb.state == VIDEOBUF_ERROR)
2946 		rc = rc | EPOLLIN|EPOLLRDNORM;
2947 	return rc;
2948 }
2949 
2950 static int bttv_open(struct file *file)
2951 {
2952 	struct video_device *vdev = video_devdata(file);
2953 	struct bttv *btv = video_drvdata(file);
2954 	struct bttv_fh *fh;
2955 	enum v4l2_buf_type type = 0;
2956 
2957 	dprintk("open dev=%s\n", video_device_node_name(vdev));
2958 
2959 	if (vdev->vfl_type == VFL_TYPE_VIDEO) {
2960 		type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2961 	} else if (vdev->vfl_type == VFL_TYPE_VBI) {
2962 		type = V4L2_BUF_TYPE_VBI_CAPTURE;
2963 	} else {
2964 		WARN_ON(1);
2965 		return -ENODEV;
2966 	}
2967 
2968 	dprintk("%d: open called (type=%s)\n",
2969 		btv->c.nr, v4l2_type_names[type]);
2970 
2971 	/* allocate per filehandle data */
2972 	fh = kmalloc(sizeof(*fh), GFP_KERNEL);
2973 	if (unlikely(!fh))
2974 		return -ENOMEM;
2975 	btv->users++;
2976 	file->private_data = fh;
2977 
2978 	*fh = btv->init;
2979 	v4l2_fh_init(&fh->fh, vdev);
2980 
2981 	fh->type = type;
2982 	fh->ov.setup_ok = 0;
2983 
2984 	videobuf_queue_sg_init(&fh->cap, &bttv_video_qops,
2985 			    &btv->c.pci->dev, &btv->s_lock,
2986 			    V4L2_BUF_TYPE_VIDEO_CAPTURE,
2987 			    V4L2_FIELD_INTERLACED,
2988 			    sizeof(struct bttv_buffer),
2989 			    fh, &btv->lock);
2990 	videobuf_queue_sg_init(&fh->vbi, &bttv_vbi_qops,
2991 			    &btv->c.pci->dev, &btv->s_lock,
2992 			    V4L2_BUF_TYPE_VBI_CAPTURE,
2993 			    V4L2_FIELD_SEQ_TB,
2994 			    sizeof(struct bttv_buffer),
2995 			    fh, &btv->lock);
2996 	set_tvnorm(btv,btv->tvnorm);
2997 	set_input(btv, btv->input, btv->tvnorm);
2998 	audio_mute(btv, btv->mute);
2999 
3000 	/* The V4L2 spec requires one global set of cropping parameters
3001 	   which only change on request. These are stored in btv->crop[1].
3002 	   However for compatibility with V4L apps and cropping unaware
3003 	   V4L2 apps we now reset the cropping parameters as seen through
3004 	   this fh, which is to say VIDIOC_G_SELECTION and scaling limit checks
3005 	   will use btv->crop[0], the default cropping parameters for the
3006 	   current video standard, and VIDIOC_S_FMT will not implicitly
3007 	   change the cropping parameters until VIDIOC_S_SELECTION has been
3008 	   called. */
3009 	fh->do_crop = !reset_crop; /* module parameter */
3010 
3011 	/* Likewise there should be one global set of VBI capture
3012 	   parameters, but for compatibility with V4L apps and earlier
3013 	   driver versions each fh has its own parameters. */
3014 	bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm);
3015 
3016 	bttv_field_count(btv);
3017 	v4l2_fh_add(&fh->fh);
3018 	return 0;
3019 }
3020 
3021 static int bttv_release(struct file *file)
3022 {
3023 	struct bttv_fh *fh = file->private_data;
3024 	struct bttv *btv = fh->btv;
3025 
3026 	/* turn off overlay */
3027 	if (check_btres(fh, RESOURCE_OVERLAY))
3028 		bttv_switch_overlay(btv,fh,NULL);
3029 
3030 	/* stop video capture */
3031 	if (check_btres(fh, RESOURCE_VIDEO_STREAM)) {
3032 		videobuf_streamoff(&fh->cap);
3033 		free_btres_lock(btv,fh,RESOURCE_VIDEO_STREAM);
3034 	}
3035 	if (fh->cap.read_buf) {
3036 		buffer_release(&fh->cap,fh->cap.read_buf);
3037 		kfree(fh->cap.read_buf);
3038 	}
3039 	if (check_btres(fh, RESOURCE_VIDEO_READ)) {
3040 		free_btres_lock(btv, fh, RESOURCE_VIDEO_READ);
3041 	}
3042 
3043 	/* stop vbi capture */
3044 	if (check_btres(fh, RESOURCE_VBI)) {
3045 		videobuf_stop(&fh->vbi);
3046 		free_btres_lock(btv,fh,RESOURCE_VBI);
3047 	}
3048 
3049 	/* free stuff */
3050 
3051 	videobuf_mmap_free(&fh->cap);
3052 	videobuf_mmap_free(&fh->vbi);
3053 	file->private_data = NULL;
3054 
3055 	btv->users--;
3056 	bttv_field_count(btv);
3057 
3058 	if (!btv->users)
3059 		audio_mute(btv, btv->mute);
3060 
3061 	v4l2_fh_del(&fh->fh);
3062 	v4l2_fh_exit(&fh->fh);
3063 	kfree(fh);
3064 	return 0;
3065 }
3066 
3067 static int
3068 bttv_mmap(struct file *file, struct vm_area_struct *vma)
3069 {
3070 	struct bttv_fh *fh = file->private_data;
3071 
3072 	dprintk("%d: mmap type=%s 0x%lx+%ld\n",
3073 		fh->btv->c.nr, v4l2_type_names[fh->type],
3074 		vma->vm_start, vma->vm_end - vma->vm_start);
3075 	return videobuf_mmap_mapper(bttv_queue(fh),vma);
3076 }
3077 
3078 static const struct v4l2_file_operations bttv_fops =
3079 {
3080 	.owner		  = THIS_MODULE,
3081 	.open		  = bttv_open,
3082 	.release	  = bttv_release,
3083 	.unlocked_ioctl	  = video_ioctl2,
3084 	.read		  = bttv_read,
3085 	.mmap		  = bttv_mmap,
3086 	.poll		  = bttv_poll,
3087 };
3088 
3089 static const struct v4l2_ioctl_ops bttv_ioctl_ops = {
3090 	.vidioc_querycap                = bttv_querycap,
3091 	.vidioc_enum_fmt_vid_cap        = bttv_enum_fmt_vid_cap,
3092 	.vidioc_g_fmt_vid_cap           = bttv_g_fmt_vid_cap,
3093 	.vidioc_try_fmt_vid_cap         = bttv_try_fmt_vid_cap,
3094 	.vidioc_s_fmt_vid_cap           = bttv_s_fmt_vid_cap,
3095 	.vidioc_enum_fmt_vid_overlay    = bttv_enum_fmt_vid_overlay,
3096 	.vidioc_g_fmt_vid_overlay       = bttv_g_fmt_vid_overlay,
3097 	.vidioc_try_fmt_vid_overlay     = bttv_try_fmt_vid_overlay,
3098 	.vidioc_s_fmt_vid_overlay       = bttv_s_fmt_vid_overlay,
3099 	.vidioc_g_fmt_vbi_cap           = bttv_g_fmt_vbi_cap,
3100 	.vidioc_try_fmt_vbi_cap         = bttv_try_fmt_vbi_cap,
3101 	.vidioc_s_fmt_vbi_cap           = bttv_s_fmt_vbi_cap,
3102 	.vidioc_g_pixelaspect           = bttv_g_pixelaspect,
3103 	.vidioc_reqbufs                 = bttv_reqbufs,
3104 	.vidioc_querybuf                = bttv_querybuf,
3105 	.vidioc_qbuf                    = bttv_qbuf,
3106 	.vidioc_dqbuf                   = bttv_dqbuf,
3107 	.vidioc_s_std                   = bttv_s_std,
3108 	.vidioc_g_std                   = bttv_g_std,
3109 	.vidioc_enum_input              = bttv_enum_input,
3110 	.vidioc_g_input                 = bttv_g_input,
3111 	.vidioc_s_input                 = bttv_s_input,
3112 	.vidioc_streamon                = bttv_streamon,
3113 	.vidioc_streamoff               = bttv_streamoff,
3114 	.vidioc_g_tuner                 = bttv_g_tuner,
3115 	.vidioc_s_tuner                 = bttv_s_tuner,
3116 	.vidioc_g_selection             = bttv_g_selection,
3117 	.vidioc_s_selection             = bttv_s_selection,
3118 	.vidioc_g_fbuf                  = bttv_g_fbuf,
3119 	.vidioc_s_fbuf                  = bttv_s_fbuf,
3120 	.vidioc_overlay                 = bttv_overlay,
3121 	.vidioc_g_parm                  = bttv_g_parm,
3122 	.vidioc_g_frequency             = bttv_g_frequency,
3123 	.vidioc_s_frequency             = bttv_s_frequency,
3124 	.vidioc_log_status		= bttv_log_status,
3125 	.vidioc_querystd		= bttv_querystd,
3126 	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
3127 	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
3128 #ifdef CONFIG_VIDEO_ADV_DEBUG
3129 	.vidioc_g_register		= bttv_g_register,
3130 	.vidioc_s_register		= bttv_s_register,
3131 #endif
3132 };
3133 
3134 static struct video_device bttv_video_template = {
3135 	.fops         = &bttv_fops,
3136 	.ioctl_ops    = &bttv_ioctl_ops,
3137 	.tvnorms      = BTTV_NORMS,
3138 };
3139 
3140 /* ----------------------------------------------------------------------- */
3141 /* radio interface                                                         */
3142 
3143 static int radio_open(struct file *file)
3144 {
3145 	struct video_device *vdev = video_devdata(file);
3146 	struct bttv *btv = video_drvdata(file);
3147 	struct bttv_fh *fh;
3148 
3149 	dprintk("open dev=%s\n", video_device_node_name(vdev));
3150 
3151 	dprintk("%d: open called (radio)\n", btv->c.nr);
3152 
3153 	/* allocate per filehandle data */
3154 	fh = kmalloc(sizeof(*fh), GFP_KERNEL);
3155 	if (unlikely(!fh))
3156 		return -ENOMEM;
3157 	file->private_data = fh;
3158 	*fh = btv->init;
3159 	v4l2_fh_init(&fh->fh, vdev);
3160 
3161 	btv->radio_user++;
3162 	audio_mute(btv, btv->mute);
3163 
3164 	v4l2_fh_add(&fh->fh);
3165 
3166 	return 0;
3167 }
3168 
3169 static int radio_release(struct file *file)
3170 {
3171 	struct bttv_fh *fh = file->private_data;
3172 	struct bttv *btv = fh->btv;
3173 	struct saa6588_command cmd;
3174 
3175 	file->private_data = NULL;
3176 	v4l2_fh_del(&fh->fh);
3177 	v4l2_fh_exit(&fh->fh);
3178 	kfree(fh);
3179 
3180 	btv->radio_user--;
3181 
3182 	bttv_call_all(btv, core, command, SAA6588_CMD_CLOSE, &cmd);
3183 
3184 	if (btv->radio_user == 0)
3185 		btv->has_radio_tuner = 0;
3186 	return 0;
3187 }
3188 
3189 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
3190 {
3191 	struct bttv_fh *fh = priv;
3192 	struct bttv *btv = fh->btv;
3193 
3194 	if (0 != t->index)
3195 		return -EINVAL;
3196 	strscpy(t->name, "Radio", sizeof(t->name));
3197 	t->type = V4L2_TUNER_RADIO;
3198 	radio_enable(btv);
3199 
3200 	bttv_call_all(btv, tuner, g_tuner, t);
3201 
3202 	if (btv->audio_mode_gpio)
3203 		btv->audio_mode_gpio(btv, t, 0);
3204 
3205 	if (btv->has_tea575x)
3206 		return snd_tea575x_g_tuner(&btv->tea, t);
3207 
3208 	return 0;
3209 }
3210 
3211 static int radio_s_tuner(struct file *file, void *priv,
3212 					const struct v4l2_tuner *t)
3213 {
3214 	struct bttv_fh *fh = priv;
3215 	struct bttv *btv = fh->btv;
3216 
3217 	if (0 != t->index)
3218 		return -EINVAL;
3219 
3220 	radio_enable(btv);
3221 	bttv_call_all(btv, tuner, s_tuner, t);
3222 	return 0;
3223 }
3224 
3225 static int radio_s_hw_freq_seek(struct file *file, void *priv,
3226 					const struct v4l2_hw_freq_seek *a)
3227 {
3228 	struct bttv_fh *fh = priv;
3229 	struct bttv *btv = fh->btv;
3230 
3231 	if (btv->has_tea575x)
3232 		return snd_tea575x_s_hw_freq_seek(file, &btv->tea, a);
3233 
3234 	return -ENOTTY;
3235 }
3236 
3237 static int radio_enum_freq_bands(struct file *file, void *priv,
3238 					 struct v4l2_frequency_band *band)
3239 {
3240 	struct bttv_fh *fh = priv;
3241 	struct bttv *btv = fh->btv;
3242 
3243 	if (btv->has_tea575x)
3244 		return snd_tea575x_enum_freq_bands(&btv->tea, band);
3245 
3246 	return -ENOTTY;
3247 }
3248 
3249 static ssize_t radio_read(struct file *file, char __user *data,
3250 			 size_t count, loff_t *ppos)
3251 {
3252 	struct bttv_fh *fh = file->private_data;
3253 	struct bttv *btv = fh->btv;
3254 	struct saa6588_command cmd;
3255 
3256 	cmd.block_count = count / 3;
3257 	cmd.nonblocking = file->f_flags & O_NONBLOCK;
3258 	cmd.buffer = data;
3259 	cmd.instance = file;
3260 	cmd.result = -ENODEV;
3261 	radio_enable(btv);
3262 
3263 	bttv_call_all(btv, core, command, SAA6588_CMD_READ, &cmd);
3264 
3265 	return cmd.result;
3266 }
3267 
3268 static __poll_t radio_poll(struct file *file, poll_table *wait)
3269 {
3270 	struct bttv_fh *fh = file->private_data;
3271 	struct bttv *btv = fh->btv;
3272 	__poll_t req_events = poll_requested_events(wait);
3273 	struct saa6588_command cmd;
3274 	__poll_t res = 0;
3275 
3276 	if (v4l2_event_pending(&fh->fh))
3277 		res = EPOLLPRI;
3278 	else if (req_events & EPOLLPRI)
3279 		poll_wait(file, &fh->fh.wait, wait);
3280 	radio_enable(btv);
3281 	cmd.instance = file;
3282 	cmd.event_list = wait;
3283 	cmd.poll_mask = res;
3284 	bttv_call_all(btv, core, command, SAA6588_CMD_POLL, &cmd);
3285 
3286 	return cmd.poll_mask;
3287 }
3288 
3289 static const struct v4l2_file_operations radio_fops =
3290 {
3291 	.owner	  = THIS_MODULE,
3292 	.open	  = radio_open,
3293 	.read     = radio_read,
3294 	.release  = radio_release,
3295 	.unlocked_ioctl = video_ioctl2,
3296 	.poll     = radio_poll,
3297 };
3298 
3299 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
3300 	.vidioc_querycap        = bttv_querycap,
3301 	.vidioc_log_status	= bttv_log_status,
3302 	.vidioc_g_tuner         = radio_g_tuner,
3303 	.vidioc_s_tuner         = radio_s_tuner,
3304 	.vidioc_g_frequency     = bttv_g_frequency,
3305 	.vidioc_s_frequency     = bttv_s_frequency,
3306 	.vidioc_s_hw_freq_seek	= radio_s_hw_freq_seek,
3307 	.vidioc_enum_freq_bands	= radio_enum_freq_bands,
3308 	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
3309 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
3310 };
3311 
3312 static struct video_device radio_template = {
3313 	.fops      = &radio_fops,
3314 	.ioctl_ops = &radio_ioctl_ops,
3315 };
3316 
3317 /* ----------------------------------------------------------------------- */
3318 /* some debug code                                                         */
3319 
3320 static int bttv_risc_decode(u32 risc)
3321 {
3322 	static char *instr[16] = {
3323 		[ BT848_RISC_WRITE     >> 28 ] = "write",
3324 		[ BT848_RISC_SKIP      >> 28 ] = "skip",
3325 		[ BT848_RISC_WRITEC    >> 28 ] = "writec",
3326 		[ BT848_RISC_JUMP      >> 28 ] = "jump",
3327 		[ BT848_RISC_SYNC      >> 28 ] = "sync",
3328 		[ BT848_RISC_WRITE123  >> 28 ] = "write123",
3329 		[ BT848_RISC_SKIP123   >> 28 ] = "skip123",
3330 		[ BT848_RISC_WRITE1S23 >> 28 ] = "write1s23",
3331 	};
3332 	static int incr[16] = {
3333 		[ BT848_RISC_WRITE     >> 28 ] = 2,
3334 		[ BT848_RISC_JUMP      >> 28 ] = 2,
3335 		[ BT848_RISC_SYNC      >> 28 ] = 2,
3336 		[ BT848_RISC_WRITE123  >> 28 ] = 5,
3337 		[ BT848_RISC_SKIP123   >> 28 ] = 2,
3338 		[ BT848_RISC_WRITE1S23 >> 28 ] = 3,
3339 	};
3340 	static char *bits[] = {
3341 		"be0",  "be1",  "be2",  "be3/resync",
3342 		"set0", "set1", "set2", "set3",
3343 		"clr0", "clr1", "clr2", "clr3",
3344 		"irq",  "res",  "eol",  "sol",
3345 	};
3346 	int i;
3347 
3348 	pr_cont("0x%08x [ %s", risc,
3349 	       instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
3350 	for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
3351 		if (risc & (1 << (i + 12)))
3352 			pr_cont(" %s", bits[i]);
3353 	pr_cont(" count=%d ]\n", risc & 0xfff);
3354 	return incr[risc >> 28] ? incr[risc >> 28] : 1;
3355 }
3356 
3357 static void bttv_risc_disasm(struct bttv *btv,
3358 			     struct btcx_riscmem *risc)
3359 {
3360 	unsigned int i,j,n;
3361 
3362 	pr_info("%s: risc disasm: %p [dma=0x%08lx]\n",
3363 		btv->c.v4l2_dev.name, risc->cpu, (unsigned long)risc->dma);
3364 	for (i = 0; i < (risc->size >> 2); i += n) {
3365 		pr_info("%s:   0x%lx: ",
3366 			btv->c.v4l2_dev.name,
3367 			(unsigned long)(risc->dma + (i<<2)));
3368 		n = bttv_risc_decode(le32_to_cpu(risc->cpu[i]));
3369 		for (j = 1; j < n; j++)
3370 			pr_info("%s:   0x%lx: 0x%08x [ arg #%d ]\n",
3371 				btv->c.v4l2_dev.name,
3372 				(unsigned long)(risc->dma + ((i+j)<<2)),
3373 				risc->cpu[i+j], j);
3374 		if (0 == risc->cpu[i])
3375 			break;
3376 	}
3377 }
3378 
3379 static void bttv_print_riscaddr(struct bttv *btv)
3380 {
3381 	pr_info("  main: %08llx\n", (unsigned long long)btv->main.dma);
3382 	pr_info("  vbi : o=%08llx e=%08llx\n",
3383 		btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
3384 		btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0);
3385 	pr_info("  cap : o=%08llx e=%08llx\n",
3386 		btv->curr.top
3387 		? (unsigned long long)btv->curr.top->top.dma : 0,
3388 		btv->curr.bottom
3389 		? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
3390 	pr_info("  scr : o=%08llx e=%08llx\n",
3391 		btv->screen ? (unsigned long long)btv->screen->top.dma : 0,
3392 		btv->screen ? (unsigned long long)btv->screen->bottom.dma : 0);
3393 	bttv_risc_disasm(btv, &btv->main);
3394 }
3395 
3396 /* ----------------------------------------------------------------------- */
3397 /* irq handler                                                             */
3398 
3399 static char *irq_name[] = {
3400 	"FMTCHG",  // format change detected (525 vs. 625)
3401 	"VSYNC",   // vertical sync (new field)
3402 	"HSYNC",   // horizontal sync
3403 	"OFLOW",   // chroma/luma AGC overflow
3404 	"HLOCK",   // horizontal lock changed
3405 	"VPRES",   // video presence changed
3406 	"6", "7",
3407 	"I2CDONE", // hw irc operation finished
3408 	"GPINT",   // gpio port triggered irq
3409 	"10",
3410 	"RISCI",   // risc instruction triggered irq
3411 	"FBUS",    // pixel data fifo dropped data (high pci bus latencies)
3412 	"FTRGT",   // pixel data fifo overrun
3413 	"FDSR",    // fifo data stream resyncronisation
3414 	"PPERR",   // parity error (data transfer)
3415 	"RIPERR",  // parity error (read risc instructions)
3416 	"PABORT",  // pci abort
3417 	"OCERR",   // risc instruction error
3418 	"SCERR",   // syncronisation error
3419 };
3420 
3421 static void bttv_print_irqbits(u32 print, u32 mark)
3422 {
3423 	unsigned int i;
3424 
3425 	pr_cont("bits:");
3426 	for (i = 0; i < ARRAY_SIZE(irq_name); i++) {
3427 		if (print & (1 << i))
3428 			pr_cont(" %s", irq_name[i]);
3429 		if (mark & (1 << i))
3430 			pr_cont("*");
3431 	}
3432 }
3433 
3434 static void bttv_irq_debug_low_latency(struct bttv *btv, u32 rc)
3435 {
3436 	pr_warn("%d: irq: skipped frame [main=%lx,o_vbi=%lx,o_field=%lx,rc=%lx]\n",
3437 		btv->c.nr,
3438 		(unsigned long)btv->main.dma,
3439 		(unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_VBI+1]),
3440 		(unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_FIELD+1]),
3441 		(unsigned long)rc);
3442 
3443 	if (0 == (btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC)) {
3444 		pr_notice("%d: Oh, there (temporarily?) is no input signal. Ok, then this is harmless, don't worry ;)\n",
3445 			  btv->c.nr);
3446 		return;
3447 	}
3448 	pr_notice("%d: Uhm. Looks like we have unusual high IRQ latencies\n",
3449 		  btv->c.nr);
3450 	pr_notice("%d: Lets try to catch the culprit red-handed ...\n",
3451 		  btv->c.nr);
3452 	dump_stack();
3453 }
3454 
3455 static int
3456 bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set)
3457 {
3458 	struct bttv_buffer *item;
3459 
3460 	memset(set,0,sizeof(*set));
3461 
3462 	/* capture request ? */
3463 	if (!list_empty(&btv->capture)) {
3464 		set->frame_irq = 1;
3465 		item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
3466 		if (V4L2_FIELD_HAS_TOP(item->vb.field))
3467 			set->top    = item;
3468 		if (V4L2_FIELD_HAS_BOTTOM(item->vb.field))
3469 			set->bottom = item;
3470 
3471 		/* capture request for other field ? */
3472 		if (!V4L2_FIELD_HAS_BOTH(item->vb.field) &&
3473 		    (item->vb.queue.next != &btv->capture)) {
3474 			item = list_entry(item->vb.queue.next, struct bttv_buffer, vb.queue);
3475 			/* Mike Isely <isely@pobox.com> - Only check
3476 			 * and set up the bottom field in the logic
3477 			 * below.  Don't ever do the top field.  This
3478 			 * of course means that if we set up the
3479 			 * bottom field in the above code that we'll
3480 			 * actually skip a field.  But that's OK.
3481 			 * Having processed only a single buffer this
3482 			 * time, then the next time around the first
3483 			 * available buffer should be for a top field.
3484 			 * That will then cause us here to set up a
3485 			 * top then a bottom field in the normal way.
3486 			 * The alternative to this understanding is
3487 			 * that we set up the second available buffer
3488 			 * as a top field, but that's out of order
3489 			 * since this driver always processes the top
3490 			 * field first - the effect will be the two
3491 			 * buffers being returned in the wrong order,
3492 			 * with the second buffer also being delayed
3493 			 * by one field time (owing to the fifo nature
3494 			 * of videobuf).  Worse still, we'll be stuck
3495 			 * doing fields out of order now every time
3496 			 * until something else causes a field to be
3497 			 * dropped.  By effectively forcing a field to
3498 			 * drop this way then we always get back into
3499 			 * sync within a single frame time.  (Out of
3500 			 * order fields can screw up deinterlacing
3501 			 * algorithms.) */
3502 			if (!V4L2_FIELD_HAS_BOTH(item->vb.field)) {
3503 				if (NULL == set->bottom &&
3504 				    V4L2_FIELD_BOTTOM == item->vb.field) {
3505 					set->bottom = item;
3506 				}
3507 				if (NULL != set->top  &&  NULL != set->bottom)
3508 					set->top_irq = 2;
3509 			}
3510 		}
3511 	}
3512 
3513 	/* screen overlay ? */
3514 	if (NULL != btv->screen) {
3515 		if (V4L2_FIELD_HAS_BOTH(btv->screen->vb.field)) {
3516 			if (NULL == set->top && NULL == set->bottom) {
3517 				set->top    = btv->screen;
3518 				set->bottom = btv->screen;
3519 			}
3520 		} else {
3521 			if (V4L2_FIELD_TOP == btv->screen->vb.field &&
3522 			    NULL == set->top) {
3523 				set->top = btv->screen;
3524 			}
3525 			if (V4L2_FIELD_BOTTOM == btv->screen->vb.field &&
3526 			    NULL == set->bottom) {
3527 				set->bottom = btv->screen;
3528 			}
3529 		}
3530 	}
3531 
3532 	dprintk("%d: next set: top=%p bottom=%p [screen=%p,irq=%d,%d]\n",
3533 		btv->c.nr, set->top, set->bottom,
3534 		btv->screen, set->frame_irq, set->top_irq);
3535 	return 0;
3536 }
3537 
3538 static void
3539 bttv_irq_wakeup_video(struct bttv *btv, struct bttv_buffer_set *wakeup,
3540 		      struct bttv_buffer_set *curr, unsigned int state)
3541 {
3542 	u64 ts = ktime_get_ns();
3543 
3544 	if (wakeup->top == wakeup->bottom) {
3545 		if (NULL != wakeup->top && curr->top != wakeup->top) {
3546 			if (irq_debug > 1)
3547 				pr_debug("%d: wakeup: both=%p\n",
3548 					 btv->c.nr, wakeup->top);
3549 			wakeup->top->vb.ts = ts;
3550 			wakeup->top->vb.field_count = btv->field_count;
3551 			wakeup->top->vb.state = state;
3552 			wake_up(&wakeup->top->vb.done);
3553 		}
3554 	} else {
3555 		if (NULL != wakeup->top && curr->top != wakeup->top) {
3556 			if (irq_debug > 1)
3557 				pr_debug("%d: wakeup: top=%p\n",
3558 					 btv->c.nr, wakeup->top);
3559 			wakeup->top->vb.ts = ts;
3560 			wakeup->top->vb.field_count = btv->field_count;
3561 			wakeup->top->vb.state = state;
3562 			wake_up(&wakeup->top->vb.done);
3563 		}
3564 		if (NULL != wakeup->bottom && curr->bottom != wakeup->bottom) {
3565 			if (irq_debug > 1)
3566 				pr_debug("%d: wakeup: bottom=%p\n",
3567 					 btv->c.nr, wakeup->bottom);
3568 			wakeup->bottom->vb.ts = ts;
3569 			wakeup->bottom->vb.field_count = btv->field_count;
3570 			wakeup->bottom->vb.state = state;
3571 			wake_up(&wakeup->bottom->vb.done);
3572 		}
3573 	}
3574 }
3575 
3576 static void
3577 bttv_irq_wakeup_vbi(struct bttv *btv, struct bttv_buffer *wakeup,
3578 		    unsigned int state)
3579 {
3580 	if (NULL == wakeup)
3581 		return;
3582 
3583 	wakeup->vb.ts = ktime_get_ns();
3584 	wakeup->vb.field_count = btv->field_count;
3585 	wakeup->vb.state = state;
3586 	wake_up(&wakeup->vb.done);
3587 }
3588 
3589 static void bttv_irq_timeout(struct timer_list *t)
3590 {
3591 	struct bttv *btv = from_timer(btv, t, timeout);
3592 	struct bttv_buffer_set old,new;
3593 	struct bttv_buffer *ovbi;
3594 	struct bttv_buffer *item;
3595 	unsigned long flags;
3596 
3597 	if (bttv_verbose) {
3598 		pr_info("%d: timeout: drop=%d irq=%d/%d, risc=%08x, ",
3599 			btv->c.nr, btv->framedrop, btv->irq_me, btv->irq_total,
3600 			btread(BT848_RISC_COUNT));
3601 		bttv_print_irqbits(btread(BT848_INT_STAT),0);
3602 		pr_cont("\n");
3603 	}
3604 
3605 	spin_lock_irqsave(&btv->s_lock,flags);
3606 
3607 	/* deactivate stuff */
3608 	memset(&new,0,sizeof(new));
3609 	old  = btv->curr;
3610 	ovbi = btv->cvbi;
3611 	btv->curr = new;
3612 	btv->cvbi = NULL;
3613 	btv->loop_irq = 0;
3614 	bttv_buffer_activate_video(btv, &new);
3615 	bttv_buffer_activate_vbi(btv,   NULL);
3616 	bttv_set_dma(btv, 0);
3617 
3618 	/* wake up */
3619 	bttv_irq_wakeup_video(btv, &old, &new, VIDEOBUF_ERROR);
3620 	bttv_irq_wakeup_vbi(btv, ovbi, VIDEOBUF_ERROR);
3621 
3622 	/* cancel all outstanding capture / vbi requests */
3623 	while (!list_empty(&btv->capture)) {
3624 		item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
3625 		list_del(&item->vb.queue);
3626 		item->vb.state = VIDEOBUF_ERROR;
3627 		wake_up(&item->vb.done);
3628 	}
3629 	while (!list_empty(&btv->vcapture)) {
3630 		item = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
3631 		list_del(&item->vb.queue);
3632 		item->vb.state = VIDEOBUF_ERROR;
3633 		wake_up(&item->vb.done);
3634 	}
3635 
3636 	btv->errors++;
3637 	spin_unlock_irqrestore(&btv->s_lock,flags);
3638 }
3639 
3640 static void
3641 bttv_irq_wakeup_top(struct bttv *btv)
3642 {
3643 	struct bttv_buffer *wakeup = btv->curr.top;
3644 
3645 	if (NULL == wakeup)
3646 		return;
3647 
3648 	spin_lock(&btv->s_lock);
3649 	btv->curr.top_irq = 0;
3650 	btv->curr.top = NULL;
3651 	bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
3652 
3653 	wakeup->vb.ts = ktime_get_ns();
3654 	wakeup->vb.field_count = btv->field_count;
3655 	wakeup->vb.state = VIDEOBUF_DONE;
3656 	wake_up(&wakeup->vb.done);
3657 	spin_unlock(&btv->s_lock);
3658 }
3659 
3660 static inline int is_active(struct btcx_riscmem *risc, u32 rc)
3661 {
3662 	if (rc < risc->dma)
3663 		return 0;
3664 	if (rc > risc->dma + risc->size)
3665 		return 0;
3666 	return 1;
3667 }
3668 
3669 static void
3670 bttv_irq_switch_video(struct bttv *btv)
3671 {
3672 	struct bttv_buffer_set new;
3673 	struct bttv_buffer_set old;
3674 	dma_addr_t rc;
3675 
3676 	spin_lock(&btv->s_lock);
3677 
3678 	/* new buffer set */
3679 	bttv_irq_next_video(btv, &new);
3680 	rc = btread(BT848_RISC_COUNT);
3681 	if ((btv->curr.top    && is_active(&btv->curr.top->top,       rc)) ||
3682 	    (btv->curr.bottom && is_active(&btv->curr.bottom->bottom, rc))) {
3683 		btv->framedrop++;
3684 		if (debug_latency)
3685 			bttv_irq_debug_low_latency(btv, rc);
3686 		spin_unlock(&btv->s_lock);
3687 		return;
3688 	}
3689 
3690 	/* switch over */
3691 	old = btv->curr;
3692 	btv->curr = new;
3693 	btv->loop_irq &= ~1;
3694 	bttv_buffer_activate_video(btv, &new);
3695 	bttv_set_dma(btv, 0);
3696 
3697 	/* switch input */
3698 	if (UNSET != btv->new_input) {
3699 		video_mux(btv,btv->new_input);
3700 		btv->new_input = UNSET;
3701 	}
3702 
3703 	/* wake up finished buffers */
3704 	bttv_irq_wakeup_video(btv, &old, &new, VIDEOBUF_DONE);
3705 	spin_unlock(&btv->s_lock);
3706 }
3707 
3708 static void
3709 bttv_irq_switch_vbi(struct bttv *btv)
3710 {
3711 	struct bttv_buffer *new = NULL;
3712 	struct bttv_buffer *old;
3713 	u32 rc;
3714 
3715 	spin_lock(&btv->s_lock);
3716 
3717 	if (!list_empty(&btv->vcapture))
3718 		new = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
3719 	old = btv->cvbi;
3720 
3721 	rc = btread(BT848_RISC_COUNT);
3722 	if (NULL != old && (is_active(&old->top,    rc) ||
3723 			    is_active(&old->bottom, rc))) {
3724 		btv->framedrop++;
3725 		if (debug_latency)
3726 			bttv_irq_debug_low_latency(btv, rc);
3727 		spin_unlock(&btv->s_lock);
3728 		return;
3729 	}
3730 
3731 	/* switch */
3732 	btv->cvbi = new;
3733 	btv->loop_irq &= ~4;
3734 	bttv_buffer_activate_vbi(btv, new);
3735 	bttv_set_dma(btv, 0);
3736 
3737 	bttv_irq_wakeup_vbi(btv, old, VIDEOBUF_DONE);
3738 	spin_unlock(&btv->s_lock);
3739 }
3740 
3741 static irqreturn_t bttv_irq(int irq, void *dev_id)
3742 {
3743 	u32 stat,astat;
3744 	u32 dstat;
3745 	int count;
3746 	struct bttv *btv;
3747 	int handled = 0;
3748 
3749 	btv=(struct bttv *)dev_id;
3750 
3751 	count=0;
3752 	while (1) {
3753 		/* get/clear interrupt status bits */
3754 		stat=btread(BT848_INT_STAT);
3755 		astat=stat&btread(BT848_INT_MASK);
3756 		if (!astat)
3757 			break;
3758 		handled = 1;
3759 		btwrite(stat,BT848_INT_STAT);
3760 
3761 		/* get device status bits */
3762 		dstat=btread(BT848_DSTATUS);
3763 
3764 		if (irq_debug) {
3765 			pr_debug("%d: irq loop=%d fc=%d riscs=%x, riscc=%08x, ",
3766 				 btv->c.nr, count, btv->field_count,
3767 				 stat>>28, btread(BT848_RISC_COUNT));
3768 			bttv_print_irqbits(stat,astat);
3769 			if (stat & BT848_INT_HLOCK)
3770 				pr_cont("   HLOC => %s",
3771 					dstat & BT848_DSTATUS_HLOC
3772 					? "yes" : "no");
3773 			if (stat & BT848_INT_VPRES)
3774 				pr_cont("   PRES => %s",
3775 					dstat & BT848_DSTATUS_PRES
3776 					? "yes" : "no");
3777 			if (stat & BT848_INT_FMTCHG)
3778 				pr_cont("   NUML => %s",
3779 					dstat & BT848_DSTATUS_NUML
3780 					? "625" : "525");
3781 			pr_cont("\n");
3782 		}
3783 
3784 		if (astat&BT848_INT_VSYNC)
3785 			btv->field_count++;
3786 
3787 		if ((astat & BT848_INT_GPINT) && btv->remote) {
3788 			bttv_input_irq(btv);
3789 		}
3790 
3791 		if (astat & BT848_INT_I2CDONE) {
3792 			btv->i2c_done = stat;
3793 			wake_up(&btv->i2c_queue);
3794 		}
3795 
3796 		if ((astat & BT848_INT_RISCI)  &&  (stat & (4<<28)))
3797 			bttv_irq_switch_vbi(btv);
3798 
3799 		if ((astat & BT848_INT_RISCI)  &&  (stat & (2<<28)))
3800 			bttv_irq_wakeup_top(btv);
3801 
3802 		if ((astat & BT848_INT_RISCI)  &&  (stat & (1<<28)))
3803 			bttv_irq_switch_video(btv);
3804 
3805 		if ((astat & BT848_INT_HLOCK)  &&  btv->opt_automute)
3806 			/* trigger automute */
3807 			audio_mux_gpio(btv, btv->audio_input, btv->mute);
3808 
3809 		if (astat & (BT848_INT_SCERR|BT848_INT_OCERR)) {
3810 			pr_info("%d: %s%s @ %08x,",
3811 				btv->c.nr,
3812 				(astat & BT848_INT_SCERR) ? "SCERR" : "",
3813 				(astat & BT848_INT_OCERR) ? "OCERR" : "",
3814 				btread(BT848_RISC_COUNT));
3815 			bttv_print_irqbits(stat,astat);
3816 			pr_cont("\n");
3817 			if (bttv_debug)
3818 				bttv_print_riscaddr(btv);
3819 		}
3820 		if (fdsr && astat & BT848_INT_FDSR) {
3821 			pr_info("%d: FDSR @ %08x\n",
3822 				btv->c.nr, btread(BT848_RISC_COUNT));
3823 			if (bttv_debug)
3824 				bttv_print_riscaddr(btv);
3825 		}
3826 
3827 		count++;
3828 		if (count > 4) {
3829 
3830 			if (count > 8 || !(astat & BT848_INT_GPINT)) {
3831 				btwrite(0, BT848_INT_MASK);
3832 
3833 				pr_err("%d: IRQ lockup, cleared int mask [",
3834 				       btv->c.nr);
3835 			} else {
3836 				pr_err("%d: IRQ lockup, clearing GPINT from int mask [",
3837 				       btv->c.nr);
3838 
3839 				btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT),
3840 						BT848_INT_MASK);
3841 			}
3842 
3843 			bttv_print_irqbits(stat,astat);
3844 
3845 			pr_cont("]\n");
3846 		}
3847 	}
3848 	btv->irq_total++;
3849 	if (handled)
3850 		btv->irq_me++;
3851 	return IRQ_RETVAL(handled);
3852 }
3853 
3854 
3855 /* ----------------------------------------------------------------------- */
3856 /* initialization                                                          */
3857 
3858 static void vdev_init(struct bttv *btv,
3859 		      struct video_device *vfd,
3860 		      const struct video_device *template,
3861 		      const char *type_name)
3862 {
3863 	*vfd = *template;
3864 	vfd->v4l2_dev = &btv->c.v4l2_dev;
3865 	vfd->release = video_device_release_empty;
3866 	video_set_drvdata(vfd, btv);
3867 	snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)",
3868 		 btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "",
3869 		 type_name, bttv_tvcards[btv->c.type].name);
3870 	if (btv->tuner_type == TUNER_ABSENT) {
3871 		v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
3872 		v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
3873 		v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
3874 		v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
3875 	}
3876 }
3877 
3878 static void bttv_unregister_video(struct bttv *btv)
3879 {
3880 	video_unregister_device(&btv->video_dev);
3881 	video_unregister_device(&btv->vbi_dev);
3882 	video_unregister_device(&btv->radio_dev);
3883 }
3884 
3885 /* register video4linux devices */
3886 static int bttv_register_video(struct bttv *btv)
3887 {
3888 	if (no_overlay > 0)
3889 		pr_notice("Overlay support disabled\n");
3890 
3891 	/* video */
3892 	vdev_init(btv, &btv->video_dev, &bttv_video_template, "video");
3893 	btv->video_dev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
3894 				     V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
3895 	if (btv->tuner_type != TUNER_ABSENT)
3896 		btv->video_dev.device_caps |= V4L2_CAP_TUNER;
3897 	if (no_overlay <= 0)
3898 		btv->video_dev.device_caps |= V4L2_CAP_VIDEO_OVERLAY;
3899 
3900 	if (video_register_device(&btv->video_dev, VFL_TYPE_VIDEO,
3901 				  video_nr[btv->c.nr]) < 0)
3902 		goto err;
3903 	pr_info("%d: registered device %s\n",
3904 		btv->c.nr, video_device_node_name(&btv->video_dev));
3905 	if (device_create_file(&btv->video_dev.dev,
3906 				     &dev_attr_card)<0) {
3907 		pr_err("%d: device_create_file 'card' failed\n", btv->c.nr);
3908 		goto err;
3909 	}
3910 
3911 	/* vbi */
3912 	vdev_init(btv, &btv->vbi_dev, &bttv_video_template, "vbi");
3913 	btv->vbi_dev.device_caps = V4L2_CAP_VBI_CAPTURE | V4L2_CAP_READWRITE |
3914 				   V4L2_CAP_STREAMING | V4L2_CAP_TUNER;
3915 	if (btv->tuner_type != TUNER_ABSENT)
3916 		btv->vbi_dev.device_caps |= V4L2_CAP_TUNER;
3917 
3918 	if (video_register_device(&btv->vbi_dev, VFL_TYPE_VBI,
3919 				  vbi_nr[btv->c.nr]) < 0)
3920 		goto err;
3921 	pr_info("%d: registered device %s\n",
3922 		btv->c.nr, video_device_node_name(&btv->vbi_dev));
3923 
3924 	if (!btv->has_radio)
3925 		return 0;
3926 	/* radio */
3927 	vdev_init(btv, &btv->radio_dev, &radio_template, "radio");
3928 	btv->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
3929 	if (btv->has_saa6588)
3930 		btv->radio_dev.device_caps |= V4L2_CAP_READWRITE |
3931 					      V4L2_CAP_RDS_CAPTURE;
3932 	if (btv->has_tea575x)
3933 		btv->radio_dev.device_caps |= V4L2_CAP_HW_FREQ_SEEK;
3934 	btv->radio_dev.ctrl_handler = &btv->radio_ctrl_handler;
3935 	if (video_register_device(&btv->radio_dev, VFL_TYPE_RADIO,
3936 				  radio_nr[btv->c.nr]) < 0)
3937 		goto err;
3938 	pr_info("%d: registered device %s\n",
3939 		btv->c.nr, video_device_node_name(&btv->radio_dev));
3940 
3941 	/* all done */
3942 	return 0;
3943 
3944  err:
3945 	bttv_unregister_video(btv);
3946 	return -1;
3947 }
3948 
3949 
3950 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
3951 /* response on cards with no firmware is not enabled by OF */
3952 static void pci_set_command(struct pci_dev *dev)
3953 {
3954 #if defined(__powerpc__)
3955 	unsigned int cmd;
3956 
3957 	pci_read_config_dword(dev, PCI_COMMAND, &cmd);
3958 	cmd = (cmd | PCI_COMMAND_MEMORY );
3959 	pci_write_config_dword(dev, PCI_COMMAND, cmd);
3960 #endif
3961 }
3962 
3963 static int bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
3964 {
3965 	struct v4l2_frequency init_freq = {
3966 		.tuner = 0,
3967 		.type = V4L2_TUNER_ANALOG_TV,
3968 		.frequency = 980,
3969 	};
3970 	int result;
3971 	unsigned char lat;
3972 	struct bttv *btv;
3973 	struct v4l2_ctrl_handler *hdl;
3974 
3975 	if (bttv_num == BTTV_MAX)
3976 		return -ENOMEM;
3977 	pr_info("Bt8xx card found (%d)\n", bttv_num);
3978 	bttvs[bttv_num] = btv = kzalloc(sizeof(*btv), GFP_KERNEL);
3979 	if (btv == NULL) {
3980 		pr_err("out of memory\n");
3981 		return -ENOMEM;
3982 	}
3983 	btv->c.nr  = bttv_num;
3984 	snprintf(btv->c.v4l2_dev.name, sizeof(btv->c.v4l2_dev.name),
3985 			"bttv%d", btv->c.nr);
3986 
3987 	/* initialize structs / fill in defaults */
3988 	mutex_init(&btv->lock);
3989 	spin_lock_init(&btv->s_lock);
3990 	spin_lock_init(&btv->gpio_lock);
3991 	init_waitqueue_head(&btv->i2c_queue);
3992 	INIT_LIST_HEAD(&btv->c.subs);
3993 	INIT_LIST_HEAD(&btv->capture);
3994 	INIT_LIST_HEAD(&btv->vcapture);
3995 
3996 	timer_setup(&btv->timeout, bttv_irq_timeout, 0);
3997 
3998 	btv->i2c_rc = -1;
3999 	btv->tuner_type  = UNSET;
4000 	btv->new_input   = UNSET;
4001 	btv->has_radio=radio[btv->c.nr];
4002 
4003 	/* pci stuff (init, get irq/mmio, ... */
4004 	btv->c.pci = dev;
4005 	btv->id  = dev->device;
4006 	if (pci_enable_device(dev)) {
4007 		pr_warn("%d: Can't enable device\n", btv->c.nr);
4008 		result = -EIO;
4009 		goto free_mem;
4010 	}
4011 	if (dma_set_mask(&dev->dev, DMA_BIT_MASK(32))) {
4012 		pr_warn("%d: No suitable DMA available\n", btv->c.nr);
4013 		result = -EIO;
4014 		goto free_mem;
4015 	}
4016 	if (!request_mem_region(pci_resource_start(dev,0),
4017 				pci_resource_len(dev,0),
4018 				btv->c.v4l2_dev.name)) {
4019 		pr_warn("%d: can't request iomem (0x%llx)\n",
4020 			btv->c.nr,
4021 			(unsigned long long)pci_resource_start(dev, 0));
4022 		result = -EBUSY;
4023 		goto free_mem;
4024 	}
4025 	pci_set_master(dev);
4026 	pci_set_command(dev);
4027 
4028 	result = v4l2_device_register(&dev->dev, &btv->c.v4l2_dev);
4029 	if (result < 0) {
4030 		pr_warn("%d: v4l2_device_register() failed\n", btv->c.nr);
4031 		goto fail0;
4032 	}
4033 	hdl = &btv->ctrl_handler;
4034 	v4l2_ctrl_handler_init(hdl, 20);
4035 	btv->c.v4l2_dev.ctrl_handler = hdl;
4036 	v4l2_ctrl_handler_init(&btv->radio_ctrl_handler, 6);
4037 
4038 	btv->revision = dev->revision;
4039 	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
4040 	pr_info("%d: Bt%d (rev %d) at %s, irq: %d, latency: %d, mmio: 0x%llx\n",
4041 		bttv_num, btv->id, btv->revision, pci_name(dev),
4042 		btv->c.pci->irq, lat,
4043 		(unsigned long long)pci_resource_start(dev, 0));
4044 	schedule();
4045 
4046 	btv->bt848_mmio = ioremap(pci_resource_start(dev, 0), 0x1000);
4047 	if (NULL == btv->bt848_mmio) {
4048 		pr_err("%d: ioremap() failed\n", btv->c.nr);
4049 		result = -EIO;
4050 		goto fail1;
4051 	}
4052 
4053 	/* identify card */
4054 	bttv_idcard(btv);
4055 
4056 	/* disable irqs, register irq handler */
4057 	btwrite(0, BT848_INT_MASK);
4058 	result = request_irq(btv->c.pci->irq, bttv_irq,
4059 	    IRQF_SHARED, btv->c.v4l2_dev.name, (void *)btv);
4060 	if (result < 0) {
4061 		pr_err("%d: can't get IRQ %d\n",
4062 		       bttv_num, btv->c.pci->irq);
4063 		goto fail1;
4064 	}
4065 
4066 	if (0 != bttv_handle_chipset(btv)) {
4067 		result = -EIO;
4068 		goto fail2;
4069 	}
4070 
4071 	/* init options from insmod args */
4072 	btv->opt_combfilter = combfilter;
4073 	bttv_ctrl_combfilter.def = combfilter;
4074 	bttv_ctrl_lumafilter.def = lumafilter;
4075 	btv->opt_automute   = automute;
4076 	bttv_ctrl_automute.def = automute;
4077 	bttv_ctrl_agc_crush.def = agc_crush;
4078 	btv->opt_vcr_hack   = vcr_hack;
4079 	bttv_ctrl_vcr_hack.def = vcr_hack;
4080 	bttv_ctrl_whitecrush_upper.def = whitecrush_upper;
4081 	bttv_ctrl_whitecrush_lower.def = whitecrush_lower;
4082 	btv->opt_uv_ratio   = uv_ratio;
4083 	bttv_ctrl_uv_ratio.def = uv_ratio;
4084 	bttv_ctrl_full_luma.def = full_luma_range;
4085 	bttv_ctrl_coring.def = coring;
4086 
4087 	/* fill struct bttv with some useful defaults */
4088 	btv->init.btv         = btv;
4089 	btv->init.ov.w.width  = 320;
4090 	btv->init.ov.w.height = 240;
4091 	btv->init.fmt         = format_by_fourcc(V4L2_PIX_FMT_BGR24);
4092 	btv->init.width       = 320;
4093 	btv->init.height      = 240;
4094 	btv->init.ov.w.width  = 320;
4095 	btv->init.ov.w.height = 240;
4096 	btv->init.ov.field    = V4L2_FIELD_INTERLACED;
4097 	btv->input = 0;
4098 
4099 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4100 			V4L2_CID_BRIGHTNESS, 0, 0xff00, 0x100, 32768);
4101 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4102 			V4L2_CID_CONTRAST, 0, 0xff80, 0x80, 0x6c00);
4103 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4104 			V4L2_CID_SATURATION, 0, 0xff80, 0x80, 32768);
4105 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4106 			V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
4107 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4108 			V4L2_CID_HUE, 0, 0xff00, 0x100, 32768);
4109 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4110 			V4L2_CID_CHROMA_AGC, 0, 1, 1, !!chroma_agc);
4111 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4112 		V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
4113 	if (btv->volume_gpio)
4114 		v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
4115 			V4L2_CID_AUDIO_VOLUME, 0, 0xff00, 0x100, 0xff00);
4116 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_combfilter, NULL);
4117 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_automute, NULL);
4118 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_lumafilter, NULL);
4119 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_agc_crush, NULL);
4120 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_vcr_hack, NULL);
4121 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_whitecrush_lower, NULL);
4122 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_whitecrush_upper, NULL);
4123 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_uv_ratio, NULL);
4124 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_full_luma, NULL);
4125 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_coring, NULL);
4126 
4127 	/* initialize hardware */
4128 	if (bttv_gpio)
4129 		bttv_gpio_tracking(btv,"pre-init");
4130 
4131 	bttv_risc_init_main(btv);
4132 	init_bt848(btv);
4133 
4134 	/* gpio */
4135 	btwrite(0x00, BT848_GPIO_REG_INP);
4136 	btwrite(0x00, BT848_GPIO_OUT_EN);
4137 	if (bttv_verbose)
4138 		bttv_gpio_tracking(btv,"init");
4139 
4140 	/* needs to be done before i2c is registered */
4141 	bttv_init_card1(btv);
4142 
4143 	/* register i2c + gpio */
4144 	init_bttv_i2c(btv);
4145 
4146 	/* some card-specific stuff (needs working i2c) */
4147 	bttv_init_card2(btv);
4148 	bttv_init_tuner(btv);
4149 	if (btv->tuner_type != TUNER_ABSENT) {
4150 		bttv_set_frequency(btv, &init_freq);
4151 		btv->radio_freq = 90500 * 16; /* 90.5Mhz default */
4152 	}
4153 	btv->std = V4L2_STD_PAL;
4154 	init_irqreg(btv);
4155 	if (!bttv_tvcards[btv->c.type].no_video)
4156 		v4l2_ctrl_handler_setup(hdl);
4157 	if (hdl->error) {
4158 		result = hdl->error;
4159 		goto fail2;
4160 	}
4161 	/* mute device */
4162 	audio_mute(btv, 1);
4163 
4164 	/* register video4linux + input */
4165 	if (!bttv_tvcards[btv->c.type].no_video) {
4166 		v4l2_ctrl_add_handler(&btv->radio_ctrl_handler, hdl,
4167 				v4l2_ctrl_radio_filter, false);
4168 		if (btv->radio_ctrl_handler.error) {
4169 			result = btv->radio_ctrl_handler.error;
4170 			goto fail2;
4171 		}
4172 		set_input(btv, 0, btv->tvnorm);
4173 		bttv_crop_reset(&btv->crop[0], btv->tvnorm);
4174 		btv->crop[1] = btv->crop[0]; /* current = default */
4175 		disclaim_vbi_lines(btv);
4176 		disclaim_video_lines(btv);
4177 		bttv_register_video(btv);
4178 	}
4179 
4180 	/* add subdevices and autoload dvb-bt8xx if needed */
4181 	if (bttv_tvcards[btv->c.type].has_dvb) {
4182 		bttv_sub_add_device(&btv->c, "dvb");
4183 		request_modules(btv);
4184 	}
4185 
4186 	if (!disable_ir) {
4187 		init_bttv_i2c_ir(btv);
4188 		bttv_input_init(btv);
4189 	}
4190 
4191 	/* everything is fine */
4192 	bttv_num++;
4193 	return 0;
4194 
4195 fail2:
4196 	free_irq(btv->c.pci->irq,btv);
4197 
4198 fail1:
4199 	v4l2_ctrl_handler_free(&btv->ctrl_handler);
4200 	v4l2_ctrl_handler_free(&btv->radio_ctrl_handler);
4201 	v4l2_device_unregister(&btv->c.v4l2_dev);
4202 
4203 fail0:
4204 	if (btv->bt848_mmio)
4205 		iounmap(btv->bt848_mmio);
4206 	release_mem_region(pci_resource_start(btv->c.pci,0),
4207 			   pci_resource_len(btv->c.pci,0));
4208 	pci_disable_device(btv->c.pci);
4209 
4210 free_mem:
4211 	bttvs[btv->c.nr] = NULL;
4212 	kfree(btv);
4213 	return result;
4214 }
4215 
4216 static void bttv_remove(struct pci_dev *pci_dev)
4217 {
4218 	struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
4219 	struct bttv *btv = to_bttv(v4l2_dev);
4220 
4221 	if (bttv_verbose)
4222 		pr_info("%d: unloading\n", btv->c.nr);
4223 
4224 	if (bttv_tvcards[btv->c.type].has_dvb)
4225 		flush_request_modules(btv);
4226 
4227 	/* shutdown everything (DMA+IRQs) */
4228 	btand(~15, BT848_GPIO_DMA_CTL);
4229 	btwrite(0, BT848_INT_MASK);
4230 	btwrite(~0x0, BT848_INT_STAT);
4231 	btwrite(0x0, BT848_GPIO_OUT_EN);
4232 	if (bttv_gpio)
4233 		bttv_gpio_tracking(btv,"cleanup");
4234 
4235 	/* tell gpio modules we are leaving ... */
4236 	btv->shutdown=1;
4237 	bttv_input_fini(btv);
4238 	bttv_sub_del_devices(&btv->c);
4239 
4240 	/* unregister i2c_bus + input */
4241 	fini_bttv_i2c(btv);
4242 
4243 	/* unregister video4linux */
4244 	bttv_unregister_video(btv);
4245 
4246 	/* free allocated memory */
4247 	v4l2_ctrl_handler_free(&btv->ctrl_handler);
4248 	v4l2_ctrl_handler_free(&btv->radio_ctrl_handler);
4249 	btcx_riscmem_free(btv->c.pci,&btv->main);
4250 
4251 	/* free resources */
4252 	free_irq(btv->c.pci->irq,btv);
4253 	iounmap(btv->bt848_mmio);
4254 	release_mem_region(pci_resource_start(btv->c.pci,0),
4255 			   pci_resource_len(btv->c.pci,0));
4256 	pci_disable_device(btv->c.pci);
4257 
4258 	v4l2_device_unregister(&btv->c.v4l2_dev);
4259 	bttvs[btv->c.nr] = NULL;
4260 	kfree(btv);
4261 
4262 	return;
4263 }
4264 
4265 static int __maybe_unused bttv_suspend(struct device *dev)
4266 {
4267 	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
4268 	struct bttv *btv = to_bttv(v4l2_dev);
4269 	struct bttv_buffer_set idle;
4270 	unsigned long flags;
4271 
4272 	dprintk("%d: suspend\n", btv->c.nr);
4273 
4274 	/* stop dma + irqs */
4275 	spin_lock_irqsave(&btv->s_lock,flags);
4276 	memset(&idle, 0, sizeof(idle));
4277 	btv->state.video = btv->curr;
4278 	btv->state.vbi   = btv->cvbi;
4279 	btv->state.loop_irq = btv->loop_irq;
4280 	btv->curr = idle;
4281 	btv->loop_irq = 0;
4282 	bttv_buffer_activate_video(btv, &idle);
4283 	bttv_buffer_activate_vbi(btv, NULL);
4284 	bttv_set_dma(btv, 0);
4285 	btwrite(0, BT848_INT_MASK);
4286 	spin_unlock_irqrestore(&btv->s_lock,flags);
4287 
4288 	/* save bt878 state */
4289 	btv->state.gpio_enable = btread(BT848_GPIO_OUT_EN);
4290 	btv->state.gpio_data   = gpio_read();
4291 
4292 	btv->state.disabled = 1;
4293 	return 0;
4294 }
4295 
4296 static int __maybe_unused bttv_resume(struct device *dev)
4297 {
4298 	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
4299 	struct bttv *btv = to_bttv(v4l2_dev);
4300 	unsigned long flags;
4301 
4302 	dprintk("%d: resume\n", btv->c.nr);
4303 
4304 	btv->state.disabled = 0;
4305 
4306 	/* restore bt878 state */
4307 	bttv_reinit_bt848(btv);
4308 	gpio_inout(0xffffff, btv->state.gpio_enable);
4309 	gpio_write(btv->state.gpio_data);
4310 
4311 	/* restart dma */
4312 	spin_lock_irqsave(&btv->s_lock,flags);
4313 	btv->curr = btv->state.video;
4314 	btv->cvbi = btv->state.vbi;
4315 	btv->loop_irq = btv->state.loop_irq;
4316 	bttv_buffer_activate_video(btv, &btv->curr);
4317 	bttv_buffer_activate_vbi(btv, btv->cvbi);
4318 	bttv_set_dma(btv, 0);
4319 	spin_unlock_irqrestore(&btv->s_lock,flags);
4320 	return 0;
4321 }
4322 
4323 static const struct pci_device_id bttv_pci_tbl[] = {
4324 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT848), 0},
4325 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT849), 0},
4326 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT878), 0},
4327 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT879), 0},
4328 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_FUSION879), 0},
4329 	{0,}
4330 };
4331 
4332 MODULE_DEVICE_TABLE(pci, bttv_pci_tbl);
4333 
4334 static SIMPLE_DEV_PM_OPS(bttv_pm_ops,
4335 			 bttv_suspend,
4336 			 bttv_resume);
4337 
4338 static struct pci_driver bttv_pci_driver = {
4339 	.name      = "bttv",
4340 	.id_table  = bttv_pci_tbl,
4341 	.probe     = bttv_probe,
4342 	.remove    = bttv_remove,
4343 	.driver.pm = &bttv_pm_ops,
4344 };
4345 
4346 static int __init bttv_init_module(void)
4347 {
4348 	int ret;
4349 
4350 	bttv_num = 0;
4351 
4352 	pr_info("driver version %s loaded\n", BTTV_VERSION);
4353 	if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
4354 		gbuffers = 2;
4355 	if (gbufsize > BTTV_MAX_FBUF)
4356 		gbufsize = BTTV_MAX_FBUF;
4357 	gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
4358 	if (bttv_verbose)
4359 		pr_info("using %d buffers with %dk (%d pages) each for capture\n",
4360 			gbuffers, gbufsize >> 10, gbufsize >> PAGE_SHIFT);
4361 
4362 	bttv_check_chipset();
4363 
4364 	ret = bus_register(&bttv_sub_bus_type);
4365 	if (ret < 0) {
4366 		pr_warn("bus_register error: %d\n", ret);
4367 		return ret;
4368 	}
4369 	ret = pci_register_driver(&bttv_pci_driver);
4370 	if (ret < 0)
4371 		bus_unregister(&bttv_sub_bus_type);
4372 
4373 	return ret;
4374 }
4375 
4376 static void __exit bttv_cleanup_module(void)
4377 {
4378 	pci_unregister_driver(&bttv_pci_driver);
4379 	bus_unregister(&bttv_sub_bus_type);
4380 }
4381 
4382 module_init(bttv_init_module);
4383 module_exit(bttv_cleanup_module);
4384