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 
card_show(struct device * cd,struct device_attribute * attr,char * buf)173 static ssize_t card_show(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_RO(card);
181 
182 /* ----------------------------------------------------------------------- */
183 /* dvb auto-load setup                                                     */
184 #if defined(CONFIG_MODULES) && defined(MODULE)
request_module_async(struct work_struct * work)185 static void request_module_async(struct work_struct *work)
186 {
187 	request_module("dvb-bt8xx");
188 }
189 
request_modules(struct bttv * dev)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 
flush_request_modules(struct bttv * dev)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    VBI		 VIDIOC_STREAMON             VIDIOC_STREAMOFF
628 		 VIDIOC_QBUF 1)              bttv_release
629 		 bttv_read, bttv_poll 1) 3)
630 
631    1) The resource must be allocated when we enter buffer prepare functions
632       and remain allocated while buffers are in the DMA queue.
633    2) This is a single frame read.
634    3) This is a continuous read, implies VIDIOC_STREAMON.
635 
636    Note this driver permits video input and standard changes regardless if
637    resources are allocated.
638 */
639 
640 #define VBI_RESOURCES (RESOURCE_VBI)
641 #define VIDEO_RESOURCES (RESOURCE_VIDEO_READ | \
642 			 RESOURCE_VIDEO_STREAM)
643 
check_alloc_btres_lock(struct bttv * btv,int bit)644 int check_alloc_btres_lock(struct bttv *btv, int bit)
645 {
646 	int xbits; /* mutual exclusive resources */
647 
648 	xbits = bit;
649 	if (bit & (RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM))
650 		xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM;
651 
652 	/* is it free? */
653 	if (btv->resources & xbits) {
654 		/* no, someone else uses it */
655 		goto fail;
656 	}
657 
658 	if ((bit & VIDEO_RESOURCES)
659 	    && 0 == (btv->resources & VIDEO_RESOURCES)) {
660 		/* Do crop - use current, don't - use default parameters. */
661 		__s32 top = btv->crop[!!btv->do_crop].rect.top;
662 
663 		if (btv->vbi_end > top)
664 			goto fail;
665 
666 		/* We cannot capture the same line as video and VBI data.
667 		   Claim scan lines crop[].rect.top to bottom. */
668 		btv->crop_start = top;
669 	} else if (bit & VBI_RESOURCES) {
670 		__s32 end = btv->vbi_fmt.end;
671 
672 		if (end > btv->crop_start)
673 			goto fail;
674 
675 		/* Claim scan lines above btv->vbi_fmt.end. */
676 		btv->vbi_end = end;
677 	}
678 
679 	/* it's free, grab it */
680 	btv->resources |= bit;
681 	return 1;
682 
683  fail:
684 	return 0;
685 }
686 
687 static
check_btres(struct bttv * btv,int bit)688 int check_btres(struct bttv *btv, int bit)
689 {
690 	return (btv->resources & bit);
691 }
692 
693 static
locked_btres(struct bttv * btv,int bit)694 int locked_btres(struct bttv *btv, int bit)
695 {
696 	return (btv->resources & bit);
697 }
698 
699 /* Call with btv->lock down. */
700 static void
disclaim_vbi_lines(struct bttv * btv)701 disclaim_vbi_lines(struct bttv *btv)
702 {
703 	btv->vbi_end = 0;
704 }
705 
706 /* Call with btv->lock down. */
707 static void
disclaim_video_lines(struct bttv * btv)708 disclaim_video_lines(struct bttv *btv)
709 {
710 	const struct bttv_tvnorm *tvnorm;
711 	u8 crop;
712 
713 	tvnorm = &bttv_tvnorms[btv->tvnorm];
714 	btv->crop_start = tvnorm->cropcap.bounds.top
715 		+ tvnorm->cropcap.bounds.height;
716 
717 	/* VBI capturing ends at VDELAY, start of video capturing, no
718 	   matter how many lines the VBI RISC program expects. When video
719 	   capturing is off, it shall no longer "preempt" VBI capturing,
720 	   so we set VDELAY to maximum. */
721 	crop = btread(BT848_E_CROP) | 0xc0;
722 	btwrite(crop, BT848_E_CROP);
723 	btwrite(0xfe, BT848_E_VDELAY_LO);
724 	btwrite(crop, BT848_O_CROP);
725 	btwrite(0xfe, BT848_O_VDELAY_LO);
726 }
727 
free_btres_lock(struct bttv * btv,int bits)728 void free_btres_lock(struct bttv *btv, int bits)
729 {
730 	if ((btv->resources & bits) != bits) {
731 		/* trying to free resources not allocated by us ... */
732 		pr_err("BUG! (btres)\n");
733 	}
734 	btv->resources &= ~bits;
735 
736 	bits = btv->resources;
737 
738 	if (0 == (bits & VIDEO_RESOURCES))
739 		disclaim_video_lines(btv);
740 
741 	if (0 == (bits & VBI_RESOURCES))
742 		disclaim_vbi_lines(btv);
743 }
744 
745 /* ----------------------------------------------------------------------- */
746 /* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC          */
747 
748 /* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C
749    PLL_X = Reference pre-divider (0=1, 1=2)
750    PLL_C = Post divider (0=6, 1=4)
751    PLL_I = Integer input
752    PLL_F = Fractional input
753 
754    F_input = 28.636363 MHz:
755    PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0
756 */
757 
set_pll_freq(struct bttv * btv,unsigned int fin,unsigned int fout)758 static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout)
759 {
760 	unsigned char fl, fh, fi;
761 
762 	/* prevent overflows */
763 	fin/=4;
764 	fout/=4;
765 
766 	fout*=12;
767 	fi=fout/fin;
768 
769 	fout=(fout%fin)*256;
770 	fh=fout/fin;
771 
772 	fout=(fout%fin)*256;
773 	fl=fout/fin;
774 
775 	btwrite(fl, BT848_PLL_F_LO);
776 	btwrite(fh, BT848_PLL_F_HI);
777 	btwrite(fi|BT848_PLL_X, BT848_PLL_XCI);
778 }
779 
set_pll(struct bttv * btv)780 static void set_pll(struct bttv *btv)
781 {
782 	int i;
783 
784 	if (!btv->pll.pll_crystal)
785 		return;
786 
787 	if (btv->pll.pll_ofreq == btv->pll.pll_current) {
788 		dprintk("%d: PLL: no change required\n", btv->c.nr);
789 		return;
790 	}
791 
792 	if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) {
793 		/* no PLL needed */
794 		if (btv->pll.pll_current == 0)
795 			return;
796 		if (bttv_verbose)
797 			pr_info("%d: PLL can sleep, using XTAL (%d)\n",
798 				btv->c.nr, btv->pll.pll_ifreq);
799 		btwrite(0x00,BT848_TGCTRL);
800 		btwrite(0x00,BT848_PLL_XCI);
801 		btv->pll.pll_current = 0;
802 		return;
803 	}
804 
805 	if (bttv_verbose)
806 		pr_info("%d: Setting PLL: %d => %d (needs up to 100ms)\n",
807 			btv->c.nr,
808 			btv->pll.pll_ifreq, btv->pll.pll_ofreq);
809 	set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);
810 
811 	for (i=0; i<10; i++) {
812 		/*  Let other people run while the PLL stabilizes */
813 		msleep(10);
814 
815 		if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
816 			btwrite(0,BT848_DSTATUS);
817 		} else {
818 			btwrite(0x08,BT848_TGCTRL);
819 			btv->pll.pll_current = btv->pll.pll_ofreq;
820 			if (bttv_verbose)
821 				pr_info("PLL set ok\n");
822 			return;
823 		}
824 	}
825 	btv->pll.pll_current = -1;
826 	if (bttv_verbose)
827 		pr_info("Setting PLL failed\n");
828 	return;
829 }
830 
831 /* used to switch between the bt848's analog/digital video capture modes */
bt848A_set_timing(struct bttv * btv)832 static void bt848A_set_timing(struct bttv *btv)
833 {
834 	int i, len;
835 	int table_idx = bttv_tvnorms[btv->tvnorm].sram;
836 	int fsc       = bttv_tvnorms[btv->tvnorm].Fsc;
837 
838 	if (btv->input == btv->dig) {
839 		dprintk("%d: load digital timing table (table_idx=%d)\n",
840 			btv->c.nr,table_idx);
841 
842 		/* timing change...reset timing generator address */
843 		btwrite(0x00, BT848_TGCTRL);
844 		btwrite(0x02, BT848_TGCTRL);
845 		btwrite(0x00, BT848_TGCTRL);
846 
847 		len=SRAM_Table[table_idx][0];
848 		for(i = 1; i <= len; i++)
849 			btwrite(SRAM_Table[table_idx][i],BT848_TGLB);
850 		btv->pll.pll_ofreq = 27000000;
851 
852 		set_pll(btv);
853 		btwrite(0x11, BT848_TGCTRL);
854 		btwrite(0x41, BT848_DVSIF);
855 	} else {
856 		btv->pll.pll_ofreq = fsc;
857 		set_pll(btv);
858 		btwrite(0x0, BT848_DVSIF);
859 	}
860 }
861 
862 /* ----------------------------------------------------------------------- */
863 
bt848_bright(struct bttv * btv,int bright)864 static void bt848_bright(struct bttv *btv, int bright)
865 {
866 	int value;
867 
868 	// printk("set bright: %d\n", bright); // DEBUG
869 	btv->bright = bright;
870 
871 	/* We want -128 to 127 we get 0-65535 */
872 	value = (bright >> 8) - 128;
873 	btwrite(value & 0xff, BT848_BRIGHT);
874 }
875 
bt848_hue(struct bttv * btv,int hue)876 static void bt848_hue(struct bttv *btv, int hue)
877 {
878 	int value;
879 
880 	btv->hue = hue;
881 
882 	/* -128 to 127 */
883 	value = (hue >> 8) - 128;
884 	btwrite(value & 0xff, BT848_HUE);
885 }
886 
bt848_contrast(struct bttv * btv,int cont)887 static void bt848_contrast(struct bttv *btv, int cont)
888 {
889 	int value,hibit;
890 
891 	btv->contrast = cont;
892 
893 	/* 0-511 */
894 	value = (cont  >> 7);
895 	hibit = (value >> 6) & 4;
896 	btwrite(value & 0xff, BT848_CONTRAST_LO);
897 	btaor(hibit, ~4, BT848_E_CONTROL);
898 	btaor(hibit, ~4, BT848_O_CONTROL);
899 }
900 
bt848_sat(struct bttv * btv,int color)901 static void bt848_sat(struct bttv *btv, int color)
902 {
903 	int val_u,val_v,hibits;
904 
905 	btv->saturation = color;
906 
907 	/* 0-511 for the color */
908 	val_u   = ((color * btv->opt_uv_ratio) / 50) >> 7;
909 	val_v   = (((color * (100 - btv->opt_uv_ratio) / 50) >>7)*180L)/254;
910 	hibits  = (val_u >> 7) & 2;
911 	hibits |= (val_v >> 8) & 1;
912 	btwrite(val_u & 0xff, BT848_SAT_U_LO);
913 	btwrite(val_v & 0xff, BT848_SAT_V_LO);
914 	btaor(hibits, ~3, BT848_E_CONTROL);
915 	btaor(hibits, ~3, BT848_O_CONTROL);
916 }
917 
918 /* ----------------------------------------------------------------------- */
919 
920 static int
video_mux(struct bttv * btv,unsigned int input)921 video_mux(struct bttv *btv, unsigned int input)
922 {
923 	int mux,mask2;
924 
925 	if (input >= bttv_tvcards[btv->c.type].video_inputs)
926 		return -EINVAL;
927 
928 	/* needed by RemoteVideo MX */
929 	mask2 = bttv_tvcards[btv->c.type].gpiomask2;
930 	if (mask2)
931 		gpio_inout(mask2,mask2);
932 
933 	if (input == btv->svhs)  {
934 		btor(BT848_CONTROL_COMP, BT848_E_CONTROL);
935 		btor(BT848_CONTROL_COMP, BT848_O_CONTROL);
936 	} else {
937 		btand(~BT848_CONTROL_COMP, BT848_E_CONTROL);
938 		btand(~BT848_CONTROL_COMP, BT848_O_CONTROL);
939 	}
940 	mux = bttv_muxsel(btv, input);
941 	btaor(mux<<5, ~(3<<5), BT848_IFORM);
942 	dprintk("%d: video mux: input=%d mux=%d\n", btv->c.nr, input, mux);
943 
944 	/* card specific hook */
945 	if(bttv_tvcards[btv->c.type].muxsel_hook)
946 		bttv_tvcards[btv->c.type].muxsel_hook (btv, input);
947 	return 0;
948 }
949 
950 static char *audio_modes[] = {
951 	"audio: tuner", "audio: radio", "audio: extern",
952 	"audio: intern", "audio: mute"
953 };
954 
955 static void
audio_mux_gpio(struct bttv * btv,int input,int mute)956 audio_mux_gpio(struct bttv *btv, int input, int mute)
957 {
958 	int gpio_val, signal, mute_gpio;
959 
960 	gpio_inout(bttv_tvcards[btv->c.type].gpiomask,
961 		   bttv_tvcards[btv->c.type].gpiomask);
962 	signal = btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC;
963 
964 	/* automute */
965 	mute_gpio = mute || (btv->opt_automute && (!signal || !btv->users)
966 				&& !btv->has_radio_tuner);
967 
968 	if (mute_gpio)
969 		gpio_val = bttv_tvcards[btv->c.type].gpiomute;
970 	else
971 		gpio_val = bttv_tvcards[btv->c.type].gpiomux[input];
972 
973 	switch (btv->c.type) {
974 	case BTTV_BOARD_VOODOOTV_FM:
975 	case BTTV_BOARD_VOODOOTV_200:
976 		gpio_val = bttv_tda9880_setnorm(btv, gpio_val);
977 		break;
978 
979 	default:
980 		gpio_bits(bttv_tvcards[btv->c.type].gpiomask, gpio_val);
981 	}
982 
983 	if (bttv_gpio)
984 		bttv_gpio_tracking(btv, audio_modes[mute_gpio ? 4 : input]);
985 }
986 
987 static int
audio_mute(struct bttv * btv,int mute)988 audio_mute(struct bttv *btv, int mute)
989 {
990 	struct v4l2_ctrl *ctrl;
991 
992 	audio_mux_gpio(btv, btv->audio_input, mute);
993 
994 	if (btv->sd_msp34xx) {
995 		ctrl = v4l2_ctrl_find(btv->sd_msp34xx->ctrl_handler, V4L2_CID_AUDIO_MUTE);
996 		if (ctrl)
997 			v4l2_ctrl_s_ctrl(ctrl, mute);
998 	}
999 	if (btv->sd_tvaudio) {
1000 		ctrl = v4l2_ctrl_find(btv->sd_tvaudio->ctrl_handler, V4L2_CID_AUDIO_MUTE);
1001 		if (ctrl)
1002 			v4l2_ctrl_s_ctrl(ctrl, mute);
1003 	}
1004 	if (btv->sd_tda7432) {
1005 		ctrl = v4l2_ctrl_find(btv->sd_tda7432->ctrl_handler, V4L2_CID_AUDIO_MUTE);
1006 		if (ctrl)
1007 			v4l2_ctrl_s_ctrl(ctrl, mute);
1008 	}
1009 	return 0;
1010 }
1011 
1012 static int
audio_input(struct bttv * btv,int input)1013 audio_input(struct bttv *btv, int input)
1014 {
1015 	audio_mux_gpio(btv, input, btv->mute);
1016 
1017 	if (btv->sd_msp34xx) {
1018 		u32 in;
1019 
1020 		/* Note: the inputs tuner/radio/extern/intern are translated
1021 		   to msp routings. This assumes common behavior for all msp3400
1022 		   based TV cards. When this assumption fails, then the
1023 		   specific MSP routing must be added to the card table.
1024 		   For now this is sufficient. */
1025 		switch (input) {
1026 		case TVAUDIO_INPUT_RADIO:
1027 			/* Some boards need the msp do to the radio demod */
1028 			if (btv->radio_uses_msp_demodulator) {
1029 				in = MSP_INPUT_DEFAULT;
1030 				break;
1031 			}
1032 			in = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1033 				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1034 			break;
1035 		case TVAUDIO_INPUT_EXTERN:
1036 			in = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
1037 				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1038 			break;
1039 		case TVAUDIO_INPUT_INTERN:
1040 			/* Yes, this is the same input as for RADIO. I doubt
1041 			   if this is ever used. The only board with an INTERN
1042 			   input is the BTTV_BOARD_AVERMEDIA98. I wonder how
1043 			   that was tested. My guess is that the whole INTERN
1044 			   input does not work. */
1045 			in = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1046 				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1047 			break;
1048 		case TVAUDIO_INPUT_TUNER:
1049 		default:
1050 			/* This is the only card that uses TUNER2, and afaik,
1051 			   is the only difference between the VOODOOTV_FM
1052 			   and VOODOOTV_200 */
1053 			if (btv->c.type == BTTV_BOARD_VOODOOTV_200)
1054 				in = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER2, \
1055 					MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER);
1056 			else
1057 				in = MSP_INPUT_DEFAULT;
1058 			break;
1059 		}
1060 		v4l2_subdev_call(btv->sd_msp34xx, audio, s_routing,
1061 			       in, MSP_OUTPUT_DEFAULT, 0);
1062 	}
1063 	if (btv->sd_tvaudio) {
1064 		v4l2_subdev_call(btv->sd_tvaudio, audio, s_routing,
1065 				 input, 0, 0);
1066 	}
1067 	return 0;
1068 }
1069 
1070 static void
bttv_crop_calc_limits(struct bttv_crop * c)1071 bttv_crop_calc_limits(struct bttv_crop *c)
1072 {
1073 	/* Scale factor min. 1:1, max. 16:1. Min. image size
1074 	   48 x 32. Scaled width must be a multiple of 4. */
1075 
1076 	if (1) {
1077 		/* For bug compatibility with VIDIOCGCAP and image
1078 		   size checks in earlier driver versions. */
1079 		c->min_scaled_width = 48;
1080 		c->min_scaled_height = 32;
1081 	} else {
1082 		c->min_scaled_width =
1083 			(max_t(unsigned int, 48, c->rect.width >> 4) + 3) & ~3;
1084 		c->min_scaled_height =
1085 			max_t(unsigned int, 32, c->rect.height >> 4);
1086 	}
1087 
1088 	c->max_scaled_width  = c->rect.width & ~3;
1089 	c->max_scaled_height = c->rect.height;
1090 }
1091 
1092 static void
bttv_crop_reset(struct bttv_crop * c,unsigned int norm)1093 bttv_crop_reset(struct bttv_crop *c, unsigned int norm)
1094 {
1095 	c->rect = bttv_tvnorms[norm].cropcap.defrect;
1096 	bttv_crop_calc_limits(c);
1097 }
1098 
1099 /* Call with btv->lock down. */
1100 static int
set_tvnorm(struct bttv * btv,unsigned int norm)1101 set_tvnorm(struct bttv *btv, unsigned int norm)
1102 {
1103 	const struct bttv_tvnorm *tvnorm;
1104 	v4l2_std_id id;
1105 
1106 	WARN_ON(norm >= BTTV_TVNORMS);
1107 	WARN_ON(btv->tvnorm >= BTTV_TVNORMS);
1108 
1109 	tvnorm = &bttv_tvnorms[norm];
1110 
1111 	if (memcmp(&bttv_tvnorms[btv->tvnorm].cropcap, &tvnorm->cropcap,
1112 		    sizeof (tvnorm->cropcap))) {
1113 		bttv_crop_reset(&btv->crop[0], norm);
1114 		btv->crop[1] = btv->crop[0]; /* current = default */
1115 
1116 		if (0 == (btv->resources & VIDEO_RESOURCES)) {
1117 			btv->crop_start = tvnorm->cropcap.bounds.top
1118 				+ tvnorm->cropcap.bounds.height;
1119 		}
1120 	}
1121 
1122 	btv->tvnorm = norm;
1123 
1124 	btwrite(tvnorm->adelay, BT848_ADELAY);
1125 	btwrite(tvnorm->bdelay, BT848_BDELAY);
1126 	btaor(tvnorm->iform,~(BT848_IFORM_NORM|BT848_IFORM_XTBOTH),
1127 	      BT848_IFORM);
1128 	btwrite(tvnorm->vbipack, BT848_VBI_PACK_SIZE);
1129 	btwrite(1, BT848_VBI_PACK_DEL);
1130 	bt848A_set_timing(btv);
1131 
1132 	switch (btv->c.type) {
1133 	case BTTV_BOARD_VOODOOTV_FM:
1134 	case BTTV_BOARD_VOODOOTV_200:
1135 		bttv_tda9880_setnorm(btv, gpio_read());
1136 		break;
1137 	}
1138 	id = tvnorm->v4l2_id;
1139 	bttv_call_all(btv, video, s_std, id);
1140 
1141 	return 0;
1142 }
1143 
1144 /* Call with btv->lock down. */
1145 static void
set_input(struct bttv * btv,unsigned int input,unsigned int norm)1146 set_input(struct bttv *btv, unsigned int input, unsigned int norm)
1147 {
1148 	unsigned long flags;
1149 
1150 	btv->input = input;
1151 	if (irq_iswitch) {
1152 		spin_lock_irqsave(&btv->s_lock,flags);
1153 		if (btv->curr.frame_irq) {
1154 			/* active capture -> delayed input switch */
1155 			btv->new_input = input;
1156 		} else {
1157 			video_mux(btv,input);
1158 		}
1159 		spin_unlock_irqrestore(&btv->s_lock,flags);
1160 	} else {
1161 		video_mux(btv,input);
1162 	}
1163 	btv->audio_input = (btv->tuner_type != TUNER_ABSENT && input == 0) ?
1164 				TVAUDIO_INPUT_TUNER : TVAUDIO_INPUT_EXTERN;
1165 	audio_input(btv, btv->audio_input);
1166 	set_tvnorm(btv, norm);
1167 }
1168 
init_irqreg(struct bttv * btv)1169 void init_irqreg(struct bttv *btv)
1170 {
1171 	/* clear status */
1172 	btwrite(0xfffffUL, BT848_INT_STAT);
1173 
1174 	if (bttv_tvcards[btv->c.type].no_video) {
1175 		/* i2c only */
1176 		btwrite(BT848_INT_I2CDONE,
1177 			BT848_INT_MASK);
1178 	} else {
1179 		/* full video */
1180 		btwrite((btv->triton1)  |
1181 			(btv->gpioirq ? BT848_INT_GPINT : 0) |
1182 			BT848_INT_SCERR |
1183 			(fdsr ? BT848_INT_FDSR : 0) |
1184 			BT848_INT_RISCI | BT848_INT_OCERR |
1185 			BT848_INT_FMTCHG|BT848_INT_HLOCK|
1186 			BT848_INT_I2CDONE,
1187 			BT848_INT_MASK);
1188 	}
1189 }
1190 
init_bt848(struct bttv * btv)1191 static void init_bt848(struct bttv *btv)
1192 {
1193 	if (bttv_tvcards[btv->c.type].no_video) {
1194 		/* very basic init only */
1195 		init_irqreg(btv);
1196 		return;
1197 	}
1198 
1199 	btwrite(0x00, BT848_CAP_CTL);
1200 	btwrite(BT848_COLOR_CTL_GAMMA, BT848_COLOR_CTL);
1201 	btwrite(BT848_IFORM_XTAUTO | BT848_IFORM_AUTO, BT848_IFORM);
1202 
1203 	/* set planar and packed mode trigger points and         */
1204 	/* set rising edge of inverted GPINTR pin as irq trigger */
1205 	btwrite(BT848_GPIO_DMA_CTL_PKTP_32|
1206 		BT848_GPIO_DMA_CTL_PLTP1_16|
1207 		BT848_GPIO_DMA_CTL_PLTP23_16|
1208 		BT848_GPIO_DMA_CTL_GPINTC|
1209 		BT848_GPIO_DMA_CTL_GPINTI,
1210 		BT848_GPIO_DMA_CTL);
1211 
1212 	btwrite(0x20, BT848_E_VSCALE_HI);
1213 	btwrite(0x20, BT848_O_VSCALE_HI);
1214 
1215 	v4l2_ctrl_handler_setup(&btv->ctrl_handler);
1216 
1217 	/* interrupt */
1218 	init_irqreg(btv);
1219 }
1220 
bttv_reinit_bt848(struct bttv * btv)1221 static void bttv_reinit_bt848(struct bttv *btv)
1222 {
1223 	unsigned long flags;
1224 
1225 	if (bttv_verbose)
1226 		pr_info("%d: reset, reinitialize\n", btv->c.nr);
1227 	spin_lock_irqsave(&btv->s_lock,flags);
1228 	btv->errors=0;
1229 	bttv_set_dma(btv,0);
1230 	spin_unlock_irqrestore(&btv->s_lock,flags);
1231 
1232 	init_bt848(btv);
1233 	btv->pll.pll_current = -1;
1234 	set_input(btv, btv->input, btv->tvnorm);
1235 }
1236 
bttv_s_ctrl(struct v4l2_ctrl * c)1237 static int bttv_s_ctrl(struct v4l2_ctrl *c)
1238 {
1239 	struct bttv *btv = container_of(c->handler, struct bttv, ctrl_handler);
1240 	int val;
1241 
1242 	switch (c->id) {
1243 	case V4L2_CID_BRIGHTNESS:
1244 		bt848_bright(btv, c->val);
1245 		break;
1246 	case V4L2_CID_HUE:
1247 		bt848_hue(btv, c->val);
1248 		break;
1249 	case V4L2_CID_CONTRAST:
1250 		bt848_contrast(btv, c->val);
1251 		break;
1252 	case V4L2_CID_SATURATION:
1253 		bt848_sat(btv, c->val);
1254 		break;
1255 	case V4L2_CID_COLOR_KILLER:
1256 		if (c->val) {
1257 			btor(BT848_SCLOOP_CKILL, BT848_E_SCLOOP);
1258 			btor(BT848_SCLOOP_CKILL, BT848_O_SCLOOP);
1259 		} else {
1260 			btand(~BT848_SCLOOP_CKILL, BT848_E_SCLOOP);
1261 			btand(~BT848_SCLOOP_CKILL, BT848_O_SCLOOP);
1262 		}
1263 		break;
1264 	case V4L2_CID_AUDIO_MUTE:
1265 		audio_mute(btv, c->val);
1266 		btv->mute = c->val;
1267 		break;
1268 	case V4L2_CID_AUDIO_VOLUME:
1269 		btv->volume_gpio(btv, c->val);
1270 		break;
1271 
1272 	case V4L2_CID_CHROMA_AGC:
1273 		val = c->val ? BT848_SCLOOP_CAGC : 0;
1274 		btwrite(val, BT848_E_SCLOOP);
1275 		btwrite(val, BT848_O_SCLOOP);
1276 		break;
1277 	case V4L2_CID_PRIVATE_COMBFILTER:
1278 		btv->opt_combfilter = c->val;
1279 		break;
1280 	case V4L2_CID_PRIVATE_LUMAFILTER:
1281 		if (c->val) {
1282 			btand(~BT848_CONTROL_LDEC, BT848_E_CONTROL);
1283 			btand(~BT848_CONTROL_LDEC, BT848_O_CONTROL);
1284 		} else {
1285 			btor(BT848_CONTROL_LDEC, BT848_E_CONTROL);
1286 			btor(BT848_CONTROL_LDEC, BT848_O_CONTROL);
1287 		}
1288 		break;
1289 	case V4L2_CID_PRIVATE_AUTOMUTE:
1290 		btv->opt_automute = c->val;
1291 		break;
1292 	case V4L2_CID_PRIVATE_AGC_CRUSH:
1293 		btwrite(BT848_ADC_RESERVED |
1294 				(c->val ? BT848_ADC_CRUSH : 0),
1295 				BT848_ADC);
1296 		break;
1297 	case V4L2_CID_PRIVATE_VCR_HACK:
1298 		btv->opt_vcr_hack = c->val;
1299 		break;
1300 	case V4L2_CID_PRIVATE_WHITECRUSH_UPPER:
1301 		btwrite(c->val, BT848_WC_UP);
1302 		break;
1303 	case V4L2_CID_PRIVATE_WHITECRUSH_LOWER:
1304 		btwrite(c->val, BT848_WC_DOWN);
1305 		break;
1306 	case V4L2_CID_PRIVATE_UV_RATIO:
1307 		btv->opt_uv_ratio = c->val;
1308 		bt848_sat(btv, btv->saturation);
1309 		break;
1310 	case V4L2_CID_PRIVATE_FULL_LUMA_RANGE:
1311 		btaor((c->val << 7), ~BT848_OFORM_RANGE, BT848_OFORM);
1312 		break;
1313 	case V4L2_CID_PRIVATE_CORING:
1314 		btaor((c->val << 5), ~BT848_OFORM_CORE32, BT848_OFORM);
1315 		break;
1316 	default:
1317 		return -EINVAL;
1318 	}
1319 	return 0;
1320 }
1321 
1322 /* ----------------------------------------------------------------------- */
1323 
1324 static const struct v4l2_ctrl_ops bttv_ctrl_ops = {
1325 	.s_ctrl = bttv_s_ctrl,
1326 };
1327 
1328 static struct v4l2_ctrl_config bttv_ctrl_combfilter = {
1329 	.ops = &bttv_ctrl_ops,
1330 	.id = V4L2_CID_PRIVATE_COMBFILTER,
1331 	.name = "Comb Filter",
1332 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1333 	.min = 0,
1334 	.max = 1,
1335 	.step = 1,
1336 	.def = 1,
1337 };
1338 
1339 static struct v4l2_ctrl_config bttv_ctrl_automute = {
1340 	.ops = &bttv_ctrl_ops,
1341 	.id = V4L2_CID_PRIVATE_AUTOMUTE,
1342 	.name = "Auto Mute",
1343 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1344 	.min = 0,
1345 	.max = 1,
1346 	.step = 1,
1347 	.def = 1,
1348 };
1349 
1350 static struct v4l2_ctrl_config bttv_ctrl_lumafilter = {
1351 	.ops = &bttv_ctrl_ops,
1352 	.id = V4L2_CID_PRIVATE_LUMAFILTER,
1353 	.name = "Luma Decimation Filter",
1354 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1355 	.min = 0,
1356 	.max = 1,
1357 	.step = 1,
1358 	.def = 1,
1359 };
1360 
1361 static struct v4l2_ctrl_config bttv_ctrl_agc_crush = {
1362 	.ops = &bttv_ctrl_ops,
1363 	.id = V4L2_CID_PRIVATE_AGC_CRUSH,
1364 	.name = "AGC Crush",
1365 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1366 	.min = 0,
1367 	.max = 1,
1368 	.step = 1,
1369 	.def = 1,
1370 };
1371 
1372 static struct v4l2_ctrl_config bttv_ctrl_vcr_hack = {
1373 	.ops = &bttv_ctrl_ops,
1374 	.id = V4L2_CID_PRIVATE_VCR_HACK,
1375 	.name = "VCR Hack",
1376 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1377 	.min = 0,
1378 	.max = 1,
1379 	.step = 1,
1380 	.def = 1,
1381 };
1382 
1383 static struct v4l2_ctrl_config bttv_ctrl_whitecrush_lower = {
1384 	.ops = &bttv_ctrl_ops,
1385 	.id = V4L2_CID_PRIVATE_WHITECRUSH_LOWER,
1386 	.name = "Whitecrush Lower",
1387 	.type = V4L2_CTRL_TYPE_INTEGER,
1388 	.min = 0,
1389 	.max = 255,
1390 	.step = 1,
1391 	.def = 0x7f,
1392 };
1393 
1394 static struct v4l2_ctrl_config bttv_ctrl_whitecrush_upper = {
1395 	.ops = &bttv_ctrl_ops,
1396 	.id = V4L2_CID_PRIVATE_WHITECRUSH_UPPER,
1397 	.name = "Whitecrush Upper",
1398 	.type = V4L2_CTRL_TYPE_INTEGER,
1399 	.min = 0,
1400 	.max = 255,
1401 	.step = 1,
1402 	.def = 0xcf,
1403 };
1404 
1405 static struct v4l2_ctrl_config bttv_ctrl_uv_ratio = {
1406 	.ops = &bttv_ctrl_ops,
1407 	.id = V4L2_CID_PRIVATE_UV_RATIO,
1408 	.name = "UV Ratio",
1409 	.type = V4L2_CTRL_TYPE_INTEGER,
1410 	.min = 0,
1411 	.max = 100,
1412 	.step = 1,
1413 	.def = 50,
1414 };
1415 
1416 static struct v4l2_ctrl_config bttv_ctrl_full_luma = {
1417 	.ops = &bttv_ctrl_ops,
1418 	.id = V4L2_CID_PRIVATE_FULL_LUMA_RANGE,
1419 	.name = "Full Luma Range",
1420 	.type = V4L2_CTRL_TYPE_BOOLEAN,
1421 	.min = 0,
1422 	.max = 1,
1423 	.step = 1,
1424 };
1425 
1426 static struct v4l2_ctrl_config bttv_ctrl_coring = {
1427 	.ops = &bttv_ctrl_ops,
1428 	.id = V4L2_CID_PRIVATE_CORING,
1429 	.name = "Coring",
1430 	.type = V4L2_CTRL_TYPE_INTEGER,
1431 	.min = 0,
1432 	.max = 3,
1433 	.step = 1,
1434 };
1435 
1436 
1437 /* ----------------------------------------------------------------------- */
1438 
bttv_gpio_tracking(struct bttv * btv,char * comment)1439 void bttv_gpio_tracking(struct bttv *btv, char *comment)
1440 {
1441 	unsigned int outbits, data;
1442 	outbits = btread(BT848_GPIO_OUT_EN);
1443 	data    = btread(BT848_GPIO_DATA);
1444 	pr_debug("%d: gpio: en=%08x, out=%08x in=%08x [%s]\n",
1445 		 btv->c.nr, outbits, data & outbits, data & ~outbits, comment);
1446 }
1447 
1448 static const struct bttv_format*
format_by_fourcc(int fourcc)1449 format_by_fourcc(int fourcc)
1450 {
1451 	unsigned int i;
1452 
1453 	for (i = 0; i < FORMATS; i++) {
1454 		if (-1 == formats[i].fourcc)
1455 			continue;
1456 		if (formats[i].fourcc == fourcc)
1457 			return formats+i;
1458 	}
1459 	return NULL;
1460 }
1461 
1462 /* ----------------------------------------------------------------------- */
1463 /* video4linux (1) interface                                               */
1464 
queue_setup(struct vb2_queue * q,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])1465 static int queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
1466 		       unsigned int *num_planes, unsigned int sizes[],
1467 		       struct device *alloc_devs[])
1468 {
1469 	struct bttv *btv = vb2_get_drv_priv(q);
1470 	unsigned int size = btv->fmt->depth * btv->width * btv->height >> 3;
1471 
1472 	if (*num_planes)
1473 		return sizes[0] < size ? -EINVAL : 0;
1474 	*num_planes = 1;
1475 	sizes[0] = size;
1476 
1477 	return 0;
1478 }
1479 
buf_queue(struct vb2_buffer * vb)1480 static void buf_queue(struct vb2_buffer *vb)
1481 {
1482 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1483 	struct vb2_queue *vq = vb->vb2_queue;
1484 	struct bttv *btv = vb2_get_drv_priv(vq);
1485 	struct bttv_buffer *buf = container_of(vbuf, struct bttv_buffer, vbuf);
1486 	unsigned long flags;
1487 
1488 	spin_lock_irqsave(&btv->s_lock, flags);
1489 	if (list_empty(&btv->capture)) {
1490 		btv->loop_irq = BT848_RISC_VIDEO;
1491 		if (vb2_is_streaming(&btv->vbiq))
1492 			btv->loop_irq |= BT848_RISC_VBI;
1493 		bttv_set_dma(btv, BT848_CAP_CTL_CAPTURE_ODD |
1494 			     BT848_CAP_CTL_CAPTURE_EVEN);
1495 	}
1496 	list_add_tail(&buf->list, &btv->capture);
1497 	spin_unlock_irqrestore(&btv->s_lock, flags);
1498 }
1499 
buf_prepare(struct vb2_buffer * vb)1500 static int buf_prepare(struct vb2_buffer *vb)
1501 {
1502 	struct vb2_queue *vq = vb->vb2_queue;
1503 	struct bttv *btv = vb2_get_drv_priv(vq);
1504 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1505 	struct bttv_buffer *buf = container_of(vbuf, struct bttv_buffer, vbuf);
1506 	unsigned int size = (btv->fmt->depth * btv->width * btv->height) >> 3;
1507 
1508 	if (vb2_plane_size(vb, 0) < size)
1509 		return -EINVAL;
1510 	vb2_set_plane_payload(vb, 0, size);
1511 
1512 	if (btv->field != V4L2_FIELD_ALTERNATE) {
1513 		buf->vbuf.field = btv->field;
1514 	} else if (btv->field_last == V4L2_FIELD_TOP) {
1515 		buf->vbuf.field = V4L2_FIELD_BOTTOM;
1516 		btv->field_last = V4L2_FIELD_BOTTOM;
1517 	} else {
1518 		buf->vbuf.field = V4L2_FIELD_TOP;
1519 		btv->field_last = V4L2_FIELD_TOP;
1520 	}
1521 
1522 	/* Allocate memory for risc struct and create the risc program. */
1523 	return bttv_buffer_risc(btv, buf);
1524 }
1525 
buf_cleanup(struct vb2_buffer * vb)1526 static void buf_cleanup(struct vb2_buffer *vb)
1527 {
1528 	struct vb2_queue *vq = vb->vb2_queue;
1529 	struct bttv *btv = vb2_get_drv_priv(vq);
1530 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1531 	struct bttv_buffer *buf = container_of(vbuf, struct bttv_buffer, vbuf);
1532 
1533 	btcx_riscmem_free(btv->c.pci, &buf->top);
1534 	btcx_riscmem_free(btv->c.pci, &buf->bottom);
1535 }
1536 
start_streaming(struct vb2_queue * q,unsigned int count)1537 static int start_streaming(struct vb2_queue *q, unsigned int count)
1538 {
1539 	int seqnr = 0;
1540 	struct bttv_buffer *buf;
1541 	struct bttv *btv = vb2_get_drv_priv(q);
1542 
1543 	if (!check_alloc_btres_lock(btv, RESOURCE_VIDEO_STREAM)) {
1544 		if (btv->field_count)
1545 			seqnr++;
1546 		while (!list_empty(&btv->capture)) {
1547 			buf = list_entry(btv->capture.next,
1548 					 struct bttv_buffer, list);
1549 			list_del(&buf->list);
1550 			buf->vbuf.sequence = (btv->field_count >> 1) + seqnr++;
1551 			vb2_buffer_done(&buf->vbuf.vb2_buf,
1552 					VB2_BUF_STATE_QUEUED);
1553 		}
1554 		return -EBUSY;
1555 	}
1556 	if (!vb2_is_streaming(&btv->vbiq)) {
1557 		init_irqreg(btv);
1558 		btv->field_count = 0;
1559 	}
1560 	btv->framedrop = 0;
1561 
1562 	return 0;
1563 }
1564 
stop_streaming(struct vb2_queue * q)1565 static void stop_streaming(struct vb2_queue *q)
1566 {
1567 	unsigned long flags;
1568 	struct bttv *btv = vb2_get_drv_priv(q);
1569 
1570 	vb2_wait_for_all_buffers(q);
1571 	spin_lock_irqsave(&btv->s_lock, flags);
1572 	free_btres_lock(btv, RESOURCE_VIDEO_STREAM);
1573 	if (!vb2_is_streaming(&btv->vbiq)) {
1574 		/* stop field counter */
1575 		btand(~BT848_INT_VSYNC, BT848_INT_MASK);
1576 	}
1577 	spin_unlock_irqrestore(&btv->s_lock, flags);
1578 }
1579 
1580 static const struct vb2_ops bttv_video_qops = {
1581 	.queue_setup    = queue_setup,
1582 	.buf_queue      = buf_queue,
1583 	.buf_prepare    = buf_prepare,
1584 	.buf_cleanup    = buf_cleanup,
1585 	.start_streaming = start_streaming,
1586 	.stop_streaming = stop_streaming,
1587 	.wait_prepare   = vb2_ops_wait_prepare,
1588 	.wait_finish    = vb2_ops_wait_finish,
1589 };
1590 
radio_enable(struct bttv * btv)1591 static void radio_enable(struct bttv *btv)
1592 {
1593 	/* Switch to the radio tuner */
1594 	if (!btv->has_radio_tuner) {
1595 		btv->has_radio_tuner = 1;
1596 		bttv_call_all(btv, tuner, s_radio);
1597 		btv->audio_input = TVAUDIO_INPUT_RADIO;
1598 		audio_input(btv, btv->audio_input);
1599 	}
1600 }
1601 
bttv_s_std(struct file * file,void * priv,v4l2_std_id id)1602 static int bttv_s_std(struct file *file, void *priv, v4l2_std_id id)
1603 {
1604 	struct bttv *btv = video_drvdata(file);
1605 	unsigned int i;
1606 
1607 	for (i = 0; i < BTTV_TVNORMS; i++)
1608 		if (id & bttv_tvnorms[i].v4l2_id)
1609 			break;
1610 	if (i == BTTV_TVNORMS)
1611 		return -EINVAL;
1612 	btv->std = id;
1613 	set_tvnorm(btv, i);
1614 	return 0;
1615 }
1616 
bttv_g_std(struct file * file,void * priv,v4l2_std_id * id)1617 static int bttv_g_std(struct file *file, void *priv, v4l2_std_id *id)
1618 {
1619 	struct bttv *btv = video_drvdata(file);
1620 
1621 	*id = btv->std;
1622 	return 0;
1623 }
1624 
bttv_querystd(struct file * file,void * f,v4l2_std_id * id)1625 static int bttv_querystd(struct file *file, void *f, v4l2_std_id *id)
1626 {
1627 	struct bttv *btv = video_drvdata(file);
1628 
1629 	if (btread(BT848_DSTATUS) & BT848_DSTATUS_NUML)
1630 		*id &= V4L2_STD_625_50;
1631 	else
1632 		*id &= V4L2_STD_525_60;
1633 	return 0;
1634 }
1635 
bttv_enum_input(struct file * file,void * priv,struct v4l2_input * i)1636 static int bttv_enum_input(struct file *file, void *priv,
1637 					struct v4l2_input *i)
1638 {
1639 	struct bttv *btv = video_drvdata(file);
1640 
1641 	if (i->index >= bttv_tvcards[btv->c.type].video_inputs)
1642 		return -EINVAL;
1643 
1644 	i->type     = V4L2_INPUT_TYPE_CAMERA;
1645 	i->audioset = 0;
1646 
1647 	if (btv->tuner_type != TUNER_ABSENT && i->index == 0) {
1648 		sprintf(i->name, "Television");
1649 		i->type  = V4L2_INPUT_TYPE_TUNER;
1650 		i->tuner = 0;
1651 	} else if (i->index == btv->svhs) {
1652 		sprintf(i->name, "S-Video");
1653 	} else {
1654 		sprintf(i->name, "Composite%d", i->index);
1655 	}
1656 
1657 	if (i->index == btv->input) {
1658 		__u32 dstatus = btread(BT848_DSTATUS);
1659 		if (0 == (dstatus & BT848_DSTATUS_PRES))
1660 			i->status |= V4L2_IN_ST_NO_SIGNAL;
1661 		if (0 == (dstatus & BT848_DSTATUS_HLOC))
1662 			i->status |= V4L2_IN_ST_NO_H_LOCK;
1663 	}
1664 
1665 	i->std = BTTV_NORMS;
1666 	return 0;
1667 }
1668 
bttv_g_input(struct file * file,void * priv,unsigned int * i)1669 static int bttv_g_input(struct file *file, void *priv, unsigned int *i)
1670 {
1671 	struct bttv *btv = video_drvdata(file);
1672 
1673 	*i = btv->input;
1674 
1675 	return 0;
1676 }
1677 
bttv_s_input(struct file * file,void * priv,unsigned int i)1678 static int bttv_s_input(struct file *file, void *priv, unsigned int i)
1679 {
1680 	struct bttv *btv = video_drvdata(file);
1681 
1682 	if (i >= bttv_tvcards[btv->c.type].video_inputs)
1683 		return -EINVAL;
1684 
1685 	set_input(btv, i, btv->tvnorm);
1686 	return 0;
1687 }
1688 
bttv_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1689 static int bttv_s_tuner(struct file *file, void *priv,
1690 					const struct v4l2_tuner *t)
1691 {
1692 	struct bttv *btv = video_drvdata(file);
1693 
1694 	if (t->index)
1695 		return -EINVAL;
1696 
1697 	bttv_call_all(btv, tuner, s_tuner, t);
1698 
1699 	if (btv->audio_mode_gpio) {
1700 		struct v4l2_tuner copy = *t;
1701 
1702 		btv->audio_mode_gpio(btv, &copy, 1);
1703 	}
1704 	return 0;
1705 }
1706 
bttv_g_frequency(struct file * file,void * priv,struct v4l2_frequency * f)1707 static int bttv_g_frequency(struct file *file, void *priv,
1708 					struct v4l2_frequency *f)
1709 {
1710 	struct bttv *btv = video_drvdata(file);
1711 
1712 	if (f->tuner)
1713 		return -EINVAL;
1714 
1715 	if (f->type == V4L2_TUNER_RADIO)
1716 		radio_enable(btv);
1717 	f->frequency = f->type == V4L2_TUNER_RADIO ?
1718 				btv->radio_freq : btv->tv_freq;
1719 
1720 	return 0;
1721 }
1722 
bttv_set_frequency(struct bttv * btv,const struct v4l2_frequency * f)1723 static void bttv_set_frequency(struct bttv *btv, const struct v4l2_frequency *f)
1724 {
1725 	struct v4l2_frequency new_freq = *f;
1726 
1727 	bttv_call_all(btv, tuner, s_frequency, f);
1728 	/* s_frequency may clamp the frequency, so get the actual
1729 	   frequency before assigning radio/tv_freq. */
1730 	bttv_call_all(btv, tuner, g_frequency, &new_freq);
1731 	if (new_freq.type == V4L2_TUNER_RADIO) {
1732 		radio_enable(btv);
1733 		btv->radio_freq = new_freq.frequency;
1734 		if (btv->has_tea575x) {
1735 			btv->tea.freq = btv->radio_freq;
1736 			snd_tea575x_set_freq(&btv->tea);
1737 		}
1738 	} else {
1739 		btv->tv_freq = new_freq.frequency;
1740 	}
1741 }
1742 
bttv_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * f)1743 static int bttv_s_frequency(struct file *file, void *priv,
1744 					const struct v4l2_frequency *f)
1745 {
1746 	struct bttv *btv = video_drvdata(file);
1747 
1748 	if (f->tuner)
1749 		return -EINVAL;
1750 
1751 	bttv_set_frequency(btv, f);
1752 	return 0;
1753 }
1754 
bttv_log_status(struct file * file,void * f)1755 static int bttv_log_status(struct file *file, void *f)
1756 {
1757 	struct video_device *vdev = video_devdata(file);
1758 	struct bttv *btv = video_drvdata(file);
1759 
1760 	v4l2_ctrl_handler_log_status(vdev->ctrl_handler, btv->c.v4l2_dev.name);
1761 	bttv_call_all(btv, core, log_status);
1762 	return 0;
1763 }
1764 
1765 #ifdef CONFIG_VIDEO_ADV_DEBUG
bttv_g_register(struct file * file,void * f,struct v4l2_dbg_register * reg)1766 static int bttv_g_register(struct file *file, void *f,
1767 					struct v4l2_dbg_register *reg)
1768 {
1769 	struct bttv *btv = video_drvdata(file);
1770 
1771 	/* bt848 has a 12-bit register space */
1772 	reg->reg &= 0xfff;
1773 	reg->val = btread(reg->reg);
1774 	reg->size = 1;
1775 
1776 	return 0;
1777 }
1778 
bttv_s_register(struct file * file,void * f,const struct v4l2_dbg_register * reg)1779 static int bttv_s_register(struct file *file, void *f,
1780 					const struct v4l2_dbg_register *reg)
1781 {
1782 	struct bttv *btv = video_drvdata(file);
1783 
1784 	/* bt848 has a 12-bit register space */
1785 	btwrite(reg->val, reg->reg & 0xfff);
1786 
1787 	return 0;
1788 }
1789 #endif
1790 
1791 /* Given cropping boundaries b and the scaled width and height of a
1792    single field or frame, which must not exceed hardware limits, this
1793    function adjusts the cropping parameters c. */
1794 static void
bttv_crop_adjust(struct bttv_crop * c,const struct v4l2_rect * b,__s32 width,__s32 height,enum v4l2_field field)1795 bttv_crop_adjust	(struct bttv_crop *             c,
1796 			 const struct v4l2_rect *	b,
1797 			 __s32                          width,
1798 			 __s32                          height,
1799 			 enum v4l2_field                field)
1800 {
1801 	__s32 frame_height = height << !V4L2_FIELD_HAS_BOTH(field);
1802 	__s32 max_left;
1803 	__s32 max_top;
1804 
1805 	if (width < c->min_scaled_width) {
1806 		/* Max. hor. scale factor 16:1. */
1807 		c->rect.width = width * 16;
1808 	} else if (width > c->max_scaled_width) {
1809 		/* Min. hor. scale factor 1:1. */
1810 		c->rect.width = width;
1811 
1812 		max_left = b->left + b->width - width;
1813 		max_left = min(max_left, (__s32) MAX_HDELAY);
1814 		if (c->rect.left > max_left)
1815 			c->rect.left = max_left;
1816 	}
1817 
1818 	if (height < c->min_scaled_height) {
1819 		/* Max. vert. scale factor 16:1, single fields 8:1. */
1820 		c->rect.height = height * 16;
1821 	} else if (frame_height > c->max_scaled_height) {
1822 		/* Min. vert. scale factor 1:1.
1823 		   Top and height count field lines times two. */
1824 		c->rect.height = (frame_height + 1) & ~1;
1825 
1826 		max_top = b->top + b->height - c->rect.height;
1827 		if (c->rect.top > max_top)
1828 			c->rect.top = max_top;
1829 	}
1830 
1831 	bttv_crop_calc_limits(c);
1832 }
1833 
1834 /* Returns an error if scaling to a frame or single field with the given
1835    width and height is not possible with the current cropping parameters
1836    and width aligned according to width_mask. If adjust_size is TRUE the
1837    function may adjust the width and/or height instead, rounding width
1838    to (width + width_bias) & width_mask. If adjust_crop is TRUE it may
1839    also adjust the current cropping parameters to get closer to the
1840    desired image size. */
1841 static int
limit_scaled_size_lock(struct bttv * btv,__s32 * width,__s32 * height,enum v4l2_field field,unsigned int width_mask,unsigned int width_bias,int adjust_size,int adjust_crop)1842 limit_scaled_size_lock(struct bttv *btv, __s32 *width, __s32 *height,
1843 		       enum v4l2_field field, unsigned int width_mask,
1844 		       unsigned int width_bias, int adjust_size,
1845 		       int adjust_crop)
1846 {
1847 	const struct v4l2_rect *b;
1848 	struct bttv_crop *c;
1849 	__s32 min_width;
1850 	__s32 min_height;
1851 	__s32 max_width;
1852 	__s32 max_height;
1853 	int rc;
1854 
1855 	WARN_ON((int)width_mask >= 0 ||
1856 		width_bias >= (unsigned int)(-width_mask));
1857 
1858 	/* Make sure tvnorm, vbi_end and the current cropping parameters
1859 	   remain consistent until we're done. */
1860 
1861 	b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
1862 
1863 	/* Do crop - use current, don't - use default parameters. */
1864 	c = &btv->crop[!!btv->do_crop];
1865 
1866 	if (btv->do_crop
1867 	    && adjust_size
1868 	    && adjust_crop
1869 	    && !locked_btres(btv, VIDEO_RESOURCES)) {
1870 		min_width = 48;
1871 		min_height = 32;
1872 
1873 		/* We cannot scale up. When the scaled image is larger
1874 		   than crop.rect we adjust the crop.rect as required
1875 		   by the V4L2 spec, hence cropcap.bounds are our limit. */
1876 		max_width = min_t(unsigned int, b->width, MAX_HACTIVE);
1877 		max_height = b->height;
1878 
1879 		/* We cannot capture the same line as video and VBI data.
1880 		   Note btv->vbi_end is really a minimum, see
1881 		   bttv_vbi_try_fmt(). */
1882 		if (btv->vbi_end > b->top) {
1883 			max_height -= btv->vbi_end - b->top;
1884 			rc = -EBUSY;
1885 			if (min_height > max_height)
1886 				goto fail;
1887 		}
1888 	} else {
1889 		rc = -EBUSY;
1890 		if (btv->vbi_end > c->rect.top)
1891 			goto fail;
1892 
1893 		min_width  = c->min_scaled_width;
1894 		min_height = c->min_scaled_height;
1895 		max_width  = c->max_scaled_width;
1896 		max_height = c->max_scaled_height;
1897 
1898 		adjust_crop = 0;
1899 	}
1900 
1901 	min_width = (min_width - width_mask - 1) & width_mask;
1902 	max_width = max_width & width_mask;
1903 
1904 	/* Max. scale factor is 16:1 for frames, 8:1 for fields. */
1905 	/* Min. scale factor is 1:1. */
1906 	max_height >>= !V4L2_FIELD_HAS_BOTH(field);
1907 
1908 	if (adjust_size) {
1909 		*width = clamp(*width, min_width, max_width);
1910 		*height = clamp(*height, min_height, max_height);
1911 
1912 		/* Round after clamping to avoid overflow. */
1913 		*width = (*width + width_bias) & width_mask;
1914 
1915 		if (adjust_crop) {
1916 			bttv_crop_adjust(c, b, *width, *height, field);
1917 
1918 			if (btv->vbi_end > c->rect.top) {
1919 				/* Move the crop window out of the way. */
1920 				c->rect.top = btv->vbi_end;
1921 			}
1922 		}
1923 	} else {
1924 		rc = -EINVAL;
1925 		if (*width  < min_width ||
1926 		    *height < min_height ||
1927 		    *width  > max_width ||
1928 		    *height > max_height ||
1929 		    0 != (*width & ~width_mask))
1930 			goto fail;
1931 	}
1932 
1933 	rc = 0; /* success */
1934 
1935  fail:
1936 
1937 	return rc;
1938 }
1939 
bttv_switch_type(struct bttv * btv,enum v4l2_buf_type type)1940 static int bttv_switch_type(struct bttv *btv, enum v4l2_buf_type type)
1941 {
1942 	int res;
1943 	struct vb2_queue *q;
1944 
1945 	switch (type) {
1946 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1947 		q = &btv->capq;
1948 		res = RESOURCE_VIDEO_STREAM;
1949 		break;
1950 	case V4L2_BUF_TYPE_VBI_CAPTURE:
1951 		q = &btv->vbiq;
1952 		res = RESOURCE_VBI;
1953 		break;
1954 	default:
1955 		WARN_ON(1);
1956 		return -EINVAL;
1957 	}
1958 
1959 	if (check_btres(btv, res))
1960 		return -EBUSY;
1961 	if (vb2_is_busy(q))
1962 		return -EBUSY;
1963 	btv->type = type;
1964 
1965 	return 0;
1966 }
1967 
1968 static void
pix_format_set_size(struct v4l2_pix_format * f,const struct bttv_format * fmt,unsigned int width,unsigned int height)1969 pix_format_set_size     (struct v4l2_pix_format *       f,
1970 			 const struct bttv_format *     fmt,
1971 			 unsigned int                   width,
1972 			 unsigned int                   height)
1973 {
1974 	f->width = width;
1975 	f->height = height;
1976 
1977 	if (fmt->flags & FORMAT_FLAGS_PLANAR) {
1978 		f->bytesperline = width; /* Y plane */
1979 		f->sizeimage = (width * height * fmt->depth) >> 3;
1980 	} else {
1981 		f->bytesperline = (width * fmt->depth) >> 3;
1982 		f->sizeimage = height * f->bytesperline;
1983 	}
1984 }
1985 
bttv_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)1986 static int bttv_g_fmt_vid_cap(struct file *file, void *priv,
1987 					struct v4l2_format *f)
1988 {
1989 	struct bttv *btv = video_drvdata(file);
1990 
1991 	pix_format_set_size(&f->fmt.pix, btv->fmt, btv->width, btv->height);
1992 	f->fmt.pix.field = btv->field;
1993 	f->fmt.pix.pixelformat  = btv->fmt->fourcc;
1994 	f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
1995 
1996 	return 0;
1997 }
1998 
bttv_get_width_mask_vid_cap(const struct bttv_format * fmt,unsigned int * width_mask,unsigned int * width_bias)1999 static void bttv_get_width_mask_vid_cap(const struct bttv_format *fmt,
2000 					unsigned int *width_mask,
2001 					unsigned int *width_bias)
2002 {
2003 	if (fmt->flags & FORMAT_FLAGS_PLANAR) {
2004 		*width_mask = ~15; /* width must be a multiple of 16 pixels */
2005 		*width_bias = 8;   /* nearest */
2006 	} else {
2007 		*width_mask = ~3; /* width must be a multiple of 4 pixels */
2008 		*width_bias = 2;  /* nearest */
2009 	}
2010 }
2011 
bttv_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)2012 static int bttv_try_fmt_vid_cap(struct file *file, void *priv,
2013 						struct v4l2_format *f)
2014 {
2015 	const struct bttv_format *fmt;
2016 	struct bttv *btv = video_drvdata(file);
2017 	enum v4l2_field field;
2018 	__s32 width, height;
2019 	__s32 height2;
2020 	unsigned int width_mask, width_bias;
2021 	int rc;
2022 
2023 	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2024 	if (NULL == fmt)
2025 		return -EINVAL;
2026 
2027 	field = f->fmt.pix.field;
2028 
2029 	switch (field) {
2030 	case V4L2_FIELD_TOP:
2031 	case V4L2_FIELD_BOTTOM:
2032 	case V4L2_FIELD_ALTERNATE:
2033 	case V4L2_FIELD_INTERLACED:
2034 		break;
2035 	case V4L2_FIELD_SEQ_BT:
2036 	case V4L2_FIELD_SEQ_TB:
2037 		if (!(fmt->flags & FORMAT_FLAGS_PLANAR)) {
2038 			field = V4L2_FIELD_SEQ_TB;
2039 			break;
2040 		}
2041 		fallthrough;
2042 	default: /* FIELD_ANY case */
2043 		height2 = btv->crop[!!btv->do_crop].rect.height >> 1;
2044 		field = (f->fmt.pix.height > height2)
2045 			? V4L2_FIELD_INTERLACED
2046 			: V4L2_FIELD_BOTTOM;
2047 		break;
2048 	}
2049 
2050 	width = f->fmt.pix.width;
2051 	height = f->fmt.pix.height;
2052 
2053 	bttv_get_width_mask_vid_cap(fmt, &width_mask, &width_bias);
2054 	rc = limit_scaled_size_lock(btv, &width, &height, field, width_mask,
2055 				    width_bias, 1, 0);
2056 	if (0 != rc)
2057 		return rc;
2058 
2059 	/* update data for the application */
2060 	f->fmt.pix.field = field;
2061 	pix_format_set_size(&f->fmt.pix, fmt, width, height);
2062 	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
2063 
2064 	return 0;
2065 }
2066 
bttv_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)2067 static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
2068 			      struct v4l2_format *f)
2069 {
2070 	int retval;
2071 	const struct bttv_format *fmt;
2072 	struct bttv *btv = video_drvdata(file);
2073 	__s32 width, height;
2074 	unsigned int width_mask, width_bias;
2075 	enum v4l2_field field;
2076 
2077 	retval = bttv_switch_type(btv, f->type);
2078 	if (0 != retval)
2079 		return retval;
2080 
2081 	retval = bttv_try_fmt_vid_cap(file, priv, f);
2082 	if (0 != retval)
2083 		return retval;
2084 
2085 	width = f->fmt.pix.width;
2086 	height = f->fmt.pix.height;
2087 	field = f->fmt.pix.field;
2088 
2089 	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2090 	bttv_get_width_mask_vid_cap(fmt, &width_mask, &width_bias);
2091 	retval = limit_scaled_size_lock(btv, &width, &height, f->fmt.pix.field,
2092 					width_mask, width_bias, 1, 1);
2093 	if (0 != retval)
2094 		return retval;
2095 
2096 	f->fmt.pix.field = field;
2097 
2098 	/* update our state information */
2099 	btv->fmt = fmt;
2100 	btv->width = f->fmt.pix.width;
2101 	btv->height = f->fmt.pix.height;
2102 	btv->field = f->fmt.pix.field;
2103 	/*
2104 	 * When field is V4L2_FIELD_ALTERNATE, buffers will be either
2105 	 * V4L2_FIELD_TOP or V4L2_FIELD_BOTTOM depending on the value of
2106 	 * field_last. Initialize field_last to V4L2_FIELD_BOTTOM so that
2107 	 * streaming starts with a V4L2_FIELD_TOP buffer.
2108 	 */
2109 	btv->field_last = V4L2_FIELD_BOTTOM;
2110 
2111 	return 0;
2112 }
2113 
bttv_querycap(struct file * file,void * priv,struct v4l2_capability * cap)2114 static int bttv_querycap(struct file *file, void  *priv,
2115 				struct v4l2_capability *cap)
2116 {
2117 	struct bttv *btv = video_drvdata(file);
2118 
2119 	if (0 == v4l2)
2120 		return -EINVAL;
2121 
2122 	strscpy(cap->driver, "bttv", sizeof(cap->driver));
2123 	strscpy(cap->card, btv->video_dev.name, sizeof(cap->card));
2124 	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
2125 			    V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
2126 	if (video_is_registered(&btv->vbi_dev))
2127 		cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
2128 	if (video_is_registered(&btv->radio_dev)) {
2129 		cap->capabilities |= V4L2_CAP_RADIO;
2130 		if (btv->has_tea575x)
2131 			cap->capabilities |= V4L2_CAP_HW_FREQ_SEEK;
2132 	}
2133 
2134 	/*
2135 	 * No need to lock here: those vars are initialized during board
2136 	 * probe and remains untouched during the rest of the driver lifecycle
2137 	 */
2138 	if (btv->has_saa6588)
2139 		cap->capabilities |= V4L2_CAP_RDS_CAPTURE;
2140 	if (btv->tuner_type != TUNER_ABSENT)
2141 		cap->capabilities |= V4L2_CAP_TUNER;
2142 	return 0;
2143 }
2144 
bttv_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)2145 static int bttv_enum_fmt_vid_cap(struct file *file, void  *priv,
2146 				 struct v4l2_fmtdesc *f)
2147 {
2148 	int index = -1, i;
2149 
2150 	for (i = 0; i < FORMATS; i++) {
2151 		if (formats[i].fourcc != -1)
2152 			index++;
2153 		if ((unsigned int)index == f->index)
2154 			break;
2155 	}
2156 	if (FORMATS == i)
2157 		return -EINVAL;
2158 
2159 	f->pixelformat = formats[i].fourcc;
2160 
2161 	return 0;
2162 }
2163 
bttv_g_parm(struct file * file,void * f,struct v4l2_streamparm * parm)2164 static int bttv_g_parm(struct file *file, void *f,
2165 				struct v4l2_streamparm *parm)
2166 {
2167 	struct bttv *btv = video_drvdata(file);
2168 
2169 	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2170 		return -EINVAL;
2171 	parm->parm.capture.readbuffers = gbuffers;
2172 	v4l2_video_std_frame_period(bttv_tvnorms[btv->tvnorm].v4l2_id,
2173 				    &parm->parm.capture.timeperframe);
2174 
2175 	return 0;
2176 }
2177 
bttv_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)2178 static int bttv_g_tuner(struct file *file, void *priv,
2179 				struct v4l2_tuner *t)
2180 {
2181 	struct bttv *btv = video_drvdata(file);
2182 
2183 	if (0 != t->index)
2184 		return -EINVAL;
2185 
2186 	t->rxsubchans = V4L2_TUNER_SUB_MONO;
2187 	t->capability = V4L2_TUNER_CAP_NORM;
2188 	bttv_call_all(btv, tuner, g_tuner, t);
2189 	strscpy(t->name, "Television", sizeof(t->name));
2190 	t->type       = V4L2_TUNER_ANALOG_TV;
2191 	if (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC)
2192 		t->signal = 0xffff;
2193 
2194 	if (btv->audio_mode_gpio)
2195 		btv->audio_mode_gpio(btv, t, 0);
2196 
2197 	return 0;
2198 }
2199 
bttv_g_pixelaspect(struct file * file,void * priv,int type,struct v4l2_fract * f)2200 static int bttv_g_pixelaspect(struct file *file, void *priv,
2201 			      int type, struct v4l2_fract *f)
2202 {
2203 	struct bttv *btv = video_drvdata(file);
2204 
2205 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2206 		return -EINVAL;
2207 
2208 	/* defrect and bounds are set via g_selection */
2209 	*f = bttv_tvnorms[btv->tvnorm].cropcap.pixelaspect;
2210 	return 0;
2211 }
2212 
bttv_g_selection(struct file * file,void * f,struct v4l2_selection * sel)2213 static int bttv_g_selection(struct file *file, void *f, struct v4l2_selection *sel)
2214 {
2215 	struct bttv *btv = video_drvdata(file);
2216 
2217 	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2218 		return -EINVAL;
2219 
2220 	switch (sel->target) {
2221 	case V4L2_SEL_TGT_CROP:
2222 		sel->r = btv->crop[!!btv->do_crop].rect;
2223 		break;
2224 	case V4L2_SEL_TGT_CROP_DEFAULT:
2225 		sel->r = bttv_tvnorms[btv->tvnorm].cropcap.defrect;
2226 		break;
2227 	case V4L2_SEL_TGT_CROP_BOUNDS:
2228 		sel->r = bttv_tvnorms[btv->tvnorm].cropcap.bounds;
2229 		break;
2230 	default:
2231 		return -EINVAL;
2232 	}
2233 
2234 	return 0;
2235 }
2236 
bttv_s_selection(struct file * file,void * f,struct v4l2_selection * sel)2237 static int bttv_s_selection(struct file *file, void *f, struct v4l2_selection *sel)
2238 {
2239 	struct bttv *btv = video_drvdata(file);
2240 	const struct v4l2_rect *b;
2241 	int retval;
2242 	struct bttv_crop c;
2243 	__s32 b_left;
2244 	__s32 b_top;
2245 	__s32 b_right;
2246 	__s32 b_bottom;
2247 
2248 	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2249 		return -EINVAL;
2250 
2251 	if (sel->target != V4L2_SEL_TGT_CROP)
2252 		return -EINVAL;
2253 
2254 	/* Make sure tvnorm, vbi_end and the current cropping
2255 	   parameters remain consistent until we're done. Note
2256 	   read() may change vbi_end in check_alloc_btres_lock(). */
2257 	retval = -EBUSY;
2258 
2259 	if (locked_btres(btv, VIDEO_RESOURCES))
2260 		return retval;
2261 
2262 	b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
2263 
2264 	b_left = b->left;
2265 	b_right = b_left + b->width;
2266 	b_bottom = b->top + b->height;
2267 
2268 	b_top = max(b->top, btv->vbi_end);
2269 	if (b_top + 32 >= b_bottom) {
2270 		return retval;
2271 	}
2272 
2273 	/* Min. scaled size 48 x 32. */
2274 	c.rect.left = clamp_t(s32, sel->r.left, b_left, b_right - 48);
2275 	c.rect.left = min(c.rect.left, (__s32) MAX_HDELAY);
2276 
2277 	c.rect.width = clamp_t(s32, sel->r.width,
2278 			     48, b_right - c.rect.left);
2279 
2280 	c.rect.top = clamp_t(s32, sel->r.top, b_top, b_bottom - 32);
2281 	/* Top and height must be a multiple of two. */
2282 	c.rect.top = (c.rect.top + 1) & ~1;
2283 
2284 	c.rect.height = clamp_t(s32, sel->r.height,
2285 			      32, b_bottom - c.rect.top);
2286 	c.rect.height = (c.rect.height + 1) & ~1;
2287 
2288 	bttv_crop_calc_limits(&c);
2289 
2290 	sel->r = c.rect;
2291 
2292 	btv->crop[1] = c;
2293 
2294 	btv->do_crop = 1;
2295 
2296 	if (btv->width < c.min_scaled_width)
2297 		btv->width = c.min_scaled_width;
2298 	else if (btv->width > c.max_scaled_width)
2299 		btv->width = c.max_scaled_width;
2300 
2301 	if (btv->height < c.min_scaled_height)
2302 		btv->height = c.min_scaled_height;
2303 	else if (btv->height > c.max_scaled_height)
2304 		btv->height = c.max_scaled_height;
2305 
2306 	return 0;
2307 }
2308 
2309 static const struct v4l2_file_operations bttv_fops =
2310 {
2311 	.owner		  = THIS_MODULE,
2312 	.open		  = v4l2_fh_open,
2313 	.release	  = vb2_fop_release,
2314 	.unlocked_ioctl	  = video_ioctl2,
2315 	.read		  = vb2_fop_read,
2316 	.mmap		  = vb2_fop_mmap,
2317 	.poll		  = vb2_fop_poll,
2318 };
2319 
2320 static const struct v4l2_ioctl_ops bttv_ioctl_ops = {
2321 	.vidioc_querycap                = bttv_querycap,
2322 	.vidioc_enum_fmt_vid_cap        = bttv_enum_fmt_vid_cap,
2323 	.vidioc_g_fmt_vid_cap           = bttv_g_fmt_vid_cap,
2324 	.vidioc_try_fmt_vid_cap         = bttv_try_fmt_vid_cap,
2325 	.vidioc_s_fmt_vid_cap           = bttv_s_fmt_vid_cap,
2326 	.vidioc_g_fmt_vbi_cap           = bttv_g_fmt_vbi_cap,
2327 	.vidioc_try_fmt_vbi_cap         = bttv_try_fmt_vbi_cap,
2328 	.vidioc_s_fmt_vbi_cap           = bttv_s_fmt_vbi_cap,
2329 	.vidioc_g_pixelaspect           = bttv_g_pixelaspect,
2330 	.vidioc_reqbufs                 = vb2_ioctl_reqbufs,
2331 	.vidioc_create_bufs             = vb2_ioctl_create_bufs,
2332 	.vidioc_querybuf                = vb2_ioctl_querybuf,
2333 	.vidioc_qbuf                    = vb2_ioctl_qbuf,
2334 	.vidioc_dqbuf                   = vb2_ioctl_dqbuf,
2335 	.vidioc_streamon                = vb2_ioctl_streamon,
2336 	.vidioc_streamoff               = vb2_ioctl_streamoff,
2337 	.vidioc_s_std                   = bttv_s_std,
2338 	.vidioc_g_std                   = bttv_g_std,
2339 	.vidioc_enum_input              = bttv_enum_input,
2340 	.vidioc_g_input                 = bttv_g_input,
2341 	.vidioc_s_input                 = bttv_s_input,
2342 	.vidioc_g_tuner                 = bttv_g_tuner,
2343 	.vidioc_s_tuner                 = bttv_s_tuner,
2344 	.vidioc_g_selection             = bttv_g_selection,
2345 	.vidioc_s_selection             = bttv_s_selection,
2346 	.vidioc_g_parm                  = bttv_g_parm,
2347 	.vidioc_g_frequency             = bttv_g_frequency,
2348 	.vidioc_s_frequency             = bttv_s_frequency,
2349 	.vidioc_log_status		= bttv_log_status,
2350 	.vidioc_querystd		= bttv_querystd,
2351 	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
2352 	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
2353 #ifdef CONFIG_VIDEO_ADV_DEBUG
2354 	.vidioc_g_register		= bttv_g_register,
2355 	.vidioc_s_register		= bttv_s_register,
2356 #endif
2357 };
2358 
2359 static struct video_device bttv_video_template = {
2360 	.fops         = &bttv_fops,
2361 	.ioctl_ops    = &bttv_ioctl_ops,
2362 	.tvnorms      = BTTV_NORMS,
2363 };
2364 
2365 /* ----------------------------------------------------------------------- */
2366 /* radio interface                                                         */
2367 
radio_open(struct file * file)2368 static int radio_open(struct file *file)
2369 {
2370 	struct video_device *vdev = video_devdata(file);
2371 	struct bttv *btv = video_drvdata(file);
2372 	int ret = v4l2_fh_open(file);
2373 
2374 	if (ret)
2375 		return ret;
2376 
2377 	dprintk("open dev=%s\n", video_device_node_name(vdev));
2378 	dprintk("%d: open called (radio)\n", btv->c.nr);
2379 
2380 	btv->radio_user++;
2381 	audio_mute(btv, btv->mute);
2382 
2383 	return 0;
2384 }
2385 
radio_release(struct file * file)2386 static int radio_release(struct file *file)
2387 {
2388 	struct bttv *btv = video_drvdata(file);
2389 	struct saa6588_command cmd;
2390 
2391 	btv->radio_user--;
2392 
2393 	bttv_call_all(btv, core, command, SAA6588_CMD_CLOSE, &cmd);
2394 
2395 	if (btv->radio_user == 0)
2396 		btv->has_radio_tuner = 0;
2397 
2398 	v4l2_fh_release(file);
2399 
2400 	return 0;
2401 }
2402 
radio_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)2403 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
2404 {
2405 	struct bttv *btv = video_drvdata(file);
2406 
2407 	if (0 != t->index)
2408 		return -EINVAL;
2409 	strscpy(t->name, "Radio", sizeof(t->name));
2410 	t->type = V4L2_TUNER_RADIO;
2411 	radio_enable(btv);
2412 
2413 	bttv_call_all(btv, tuner, g_tuner, t);
2414 
2415 	if (btv->audio_mode_gpio)
2416 		btv->audio_mode_gpio(btv, t, 0);
2417 
2418 	if (btv->has_tea575x)
2419 		return snd_tea575x_g_tuner(&btv->tea, t);
2420 
2421 	return 0;
2422 }
2423 
radio_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)2424 static int radio_s_tuner(struct file *file, void *priv,
2425 					const struct v4l2_tuner *t)
2426 {
2427 	struct bttv *btv = video_drvdata(file);
2428 
2429 	if (0 != t->index)
2430 		return -EINVAL;
2431 
2432 	radio_enable(btv);
2433 	bttv_call_all(btv, tuner, s_tuner, t);
2434 	return 0;
2435 }
2436 
radio_s_hw_freq_seek(struct file * file,void * priv,const struct v4l2_hw_freq_seek * a)2437 static int radio_s_hw_freq_seek(struct file *file, void *priv,
2438 					const struct v4l2_hw_freq_seek *a)
2439 {
2440 	struct bttv *btv = video_drvdata(file);
2441 
2442 	if (btv->has_tea575x)
2443 		return snd_tea575x_s_hw_freq_seek(file, &btv->tea, a);
2444 
2445 	return -ENOTTY;
2446 }
2447 
radio_enum_freq_bands(struct file * file,void * priv,struct v4l2_frequency_band * band)2448 static int radio_enum_freq_bands(struct file *file, void *priv,
2449 					 struct v4l2_frequency_band *band)
2450 {
2451 	struct bttv *btv = video_drvdata(file);
2452 
2453 	if (btv->has_tea575x)
2454 		return snd_tea575x_enum_freq_bands(&btv->tea, band);
2455 
2456 	return -ENOTTY;
2457 }
2458 
radio_read(struct file * file,char __user * data,size_t count,loff_t * ppos)2459 static ssize_t radio_read(struct file *file, char __user *data,
2460 			 size_t count, loff_t *ppos)
2461 {
2462 	struct bttv *btv = video_drvdata(file);
2463 	struct saa6588_command cmd;
2464 
2465 	cmd.block_count = count / 3;
2466 	cmd.nonblocking = file->f_flags & O_NONBLOCK;
2467 	cmd.buffer = data;
2468 	cmd.instance = file;
2469 	cmd.result = -ENODEV;
2470 	radio_enable(btv);
2471 
2472 	bttv_call_all(btv, core, command, SAA6588_CMD_READ, &cmd);
2473 
2474 	return cmd.result;
2475 }
2476 
radio_poll(struct file * file,poll_table * wait)2477 static __poll_t radio_poll(struct file *file, poll_table *wait)
2478 {
2479 	struct bttv *btv = video_drvdata(file);
2480 	struct saa6588_command cmd;
2481 	__poll_t rc = v4l2_ctrl_poll(file, wait);
2482 
2483 	radio_enable(btv);
2484 	cmd.instance = file;
2485 	cmd.event_list = wait;
2486 	cmd.poll_mask = 0;
2487 	bttv_call_all(btv, core, command, SAA6588_CMD_POLL, &cmd);
2488 
2489 	return rc | cmd.poll_mask;
2490 }
2491 
2492 static const struct v4l2_file_operations radio_fops =
2493 {
2494 	.owner	  = THIS_MODULE,
2495 	.open	  = radio_open,
2496 	.read     = radio_read,
2497 	.release  = radio_release,
2498 	.unlocked_ioctl = video_ioctl2,
2499 	.poll     = radio_poll,
2500 };
2501 
2502 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2503 	.vidioc_querycap        = bttv_querycap,
2504 	.vidioc_log_status	= bttv_log_status,
2505 	.vidioc_g_tuner         = radio_g_tuner,
2506 	.vidioc_s_tuner         = radio_s_tuner,
2507 	.vidioc_g_frequency     = bttv_g_frequency,
2508 	.vidioc_s_frequency     = bttv_s_frequency,
2509 	.vidioc_s_hw_freq_seek	= radio_s_hw_freq_seek,
2510 	.vidioc_enum_freq_bands	= radio_enum_freq_bands,
2511 	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2512 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2513 };
2514 
2515 static struct video_device radio_template = {
2516 	.fops      = &radio_fops,
2517 	.ioctl_ops = &radio_ioctl_ops,
2518 };
2519 
2520 /* ----------------------------------------------------------------------- */
2521 /* some debug code                                                         */
2522 
bttv_risc_decode(u32 risc)2523 static int bttv_risc_decode(u32 risc)
2524 {
2525 	static char *instr[16] = {
2526 		[ BT848_RISC_WRITE     >> 28 ] = "write",
2527 		[ BT848_RISC_SKIP      >> 28 ] = "skip",
2528 		[ BT848_RISC_WRITEC    >> 28 ] = "writec",
2529 		[ BT848_RISC_JUMP      >> 28 ] = "jump",
2530 		[ BT848_RISC_SYNC      >> 28 ] = "sync",
2531 		[ BT848_RISC_WRITE123  >> 28 ] = "write123",
2532 		[ BT848_RISC_SKIP123   >> 28 ] = "skip123",
2533 		[ BT848_RISC_WRITE1S23 >> 28 ] = "write1s23",
2534 	};
2535 	static int incr[16] = {
2536 		[ BT848_RISC_WRITE     >> 28 ] = 2,
2537 		[ BT848_RISC_JUMP      >> 28 ] = 2,
2538 		[ BT848_RISC_SYNC      >> 28 ] = 2,
2539 		[ BT848_RISC_WRITE123  >> 28 ] = 5,
2540 		[ BT848_RISC_SKIP123   >> 28 ] = 2,
2541 		[ BT848_RISC_WRITE1S23 >> 28 ] = 3,
2542 	};
2543 	static char *bits[] = {
2544 		"be0",  "be1",  "be2",  "be3/resync",
2545 		"set0", "set1", "set2", "set3",
2546 		"clr0", "clr1", "clr2", "clr3",
2547 		"irq",  "res",  "eol",  "sol",
2548 	};
2549 	int i;
2550 
2551 	pr_cont("0x%08x [ %s", risc,
2552 	       instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
2553 	for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
2554 		if (risc & (1 << (i + 12)))
2555 			pr_cont(" %s", bits[i]);
2556 	pr_cont(" count=%d ]\n", risc & 0xfff);
2557 	return incr[risc >> 28] ? incr[risc >> 28] : 1;
2558 }
2559 
bttv_risc_disasm(struct bttv * btv,struct btcx_riscmem * risc)2560 static void bttv_risc_disasm(struct bttv *btv,
2561 			     struct btcx_riscmem *risc)
2562 {
2563 	unsigned int i,j,n;
2564 
2565 	pr_info("%s: risc disasm: %p [dma=0x%08lx]\n",
2566 		btv->c.v4l2_dev.name, risc->cpu, (unsigned long)risc->dma);
2567 	for (i = 0; i < (risc->size >> 2); i += n) {
2568 		pr_info("%s:   0x%lx: ",
2569 			btv->c.v4l2_dev.name,
2570 			(unsigned long)(risc->dma + (i<<2)));
2571 		n = bttv_risc_decode(le32_to_cpu(risc->cpu[i]));
2572 		for (j = 1; j < n; j++)
2573 			pr_info("%s:   0x%lx: 0x%08x [ arg #%d ]\n",
2574 				btv->c.v4l2_dev.name,
2575 				(unsigned long)(risc->dma + ((i+j)<<2)),
2576 				risc->cpu[i+j], j);
2577 		if (0 == risc->cpu[i])
2578 			break;
2579 	}
2580 }
2581 
bttv_print_riscaddr(struct bttv * btv)2582 static void bttv_print_riscaddr(struct bttv *btv)
2583 {
2584 	pr_info("  main: %08llx\n", (unsigned long long)btv->main.dma);
2585 	pr_info("  vbi : o=%08llx e=%08llx\n",
2586 		btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
2587 		btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0);
2588 	pr_info("  cap : o=%08llx e=%08llx\n",
2589 		btv->curr.top
2590 		? (unsigned long long)btv->curr.top->top.dma : 0,
2591 		btv->curr.bottom
2592 		? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
2593 	bttv_risc_disasm(btv, &btv->main);
2594 }
2595 
2596 /* ----------------------------------------------------------------------- */
2597 /* irq handler                                                             */
2598 
2599 static char *irq_name[] = {
2600 	"FMTCHG",  // format change detected (525 vs. 625)
2601 	"VSYNC",   // vertical sync (new field)
2602 	"HSYNC",   // horizontal sync
2603 	"OFLOW",   // chroma/luma AGC overflow
2604 	"HLOCK",   // horizontal lock changed
2605 	"VPRES",   // video presence changed
2606 	"6", "7",
2607 	"I2CDONE", // hw irc operation finished
2608 	"GPINT",   // gpio port triggered irq
2609 	"10",
2610 	"RISCI",   // risc instruction triggered irq
2611 	"FBUS",    // pixel data fifo dropped data (high pci bus latencies)
2612 	"FTRGT",   // pixel data fifo overrun
2613 	"FDSR",    // fifo data stream resyncronisation
2614 	"PPERR",   // parity error (data transfer)
2615 	"RIPERR",  // parity error (read risc instructions)
2616 	"PABORT",  // pci abort
2617 	"OCERR",   // risc instruction error
2618 	"SCERR",   // syncronisation error
2619 };
2620 
bttv_print_irqbits(u32 print,u32 mark)2621 static void bttv_print_irqbits(u32 print, u32 mark)
2622 {
2623 	unsigned int i;
2624 
2625 	pr_cont("bits:");
2626 	for (i = 0; i < ARRAY_SIZE(irq_name); i++) {
2627 		if (print & (1 << i))
2628 			pr_cont(" %s", irq_name[i]);
2629 		if (mark & (1 << i))
2630 			pr_cont("*");
2631 	}
2632 }
2633 
bttv_irq_debug_low_latency(struct bttv * btv,u32 rc)2634 static void bttv_irq_debug_low_latency(struct bttv *btv, u32 rc)
2635 {
2636 	pr_warn("%d: irq: skipped frame [main=%lx,o_vbi=%lx,o_field=%lx,rc=%lx]\n",
2637 		btv->c.nr,
2638 		(unsigned long)btv->main.dma,
2639 		(unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_VBI+1]),
2640 		(unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_FIELD+1]),
2641 		(unsigned long)rc);
2642 
2643 	if (0 == (btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC)) {
2644 		pr_notice("%d: Oh, there (temporarily?) is no input signal. Ok, then this is harmless, don't worry ;)\n",
2645 			  btv->c.nr);
2646 		return;
2647 	}
2648 	pr_notice("%d: Uhm. Looks like we have unusual high IRQ latencies\n",
2649 		  btv->c.nr);
2650 	pr_notice("%d: Lets try to catch the culprit red-handed ...\n",
2651 		  btv->c.nr);
2652 	dump_stack();
2653 }
2654 
2655 static int
bttv_irq_next_video(struct bttv * btv,struct bttv_buffer_set * set)2656 bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set)
2657 {
2658 	struct bttv_buffer *item;
2659 
2660 	memset(set,0,sizeof(*set));
2661 
2662 	/* capture request ? */
2663 	if (!list_empty(&btv->capture)) {
2664 		set->frame_irq = BT848_RISC_VIDEO;
2665 		item = list_entry(btv->capture.next, struct bttv_buffer, list);
2666 
2667 		if (V4L2_FIELD_HAS_TOP(item->vbuf.field))
2668 			set->top    = item;
2669 		if (V4L2_FIELD_HAS_BOTTOM(item->vbuf.field))
2670 			set->bottom = item;
2671 
2672 		/* capture request for other field ? */
2673 		if (!V4L2_FIELD_HAS_BOTH(item->vbuf.field) &&
2674 		    item->list.next != &btv->capture) {
2675 			item = list_entry(item->list.next,
2676 					  struct bttv_buffer, list);
2677 			/* Mike Isely <isely@pobox.com> - Only check
2678 			 * and set up the bottom field in the logic
2679 			 * below.  Don't ever do the top field.  This
2680 			 * of course means that if we set up the
2681 			 * bottom field in the above code that we'll
2682 			 * actually skip a field.  But that's OK.
2683 			 * Having processed only a single buffer this
2684 			 * time, then the next time around the first
2685 			 * available buffer should be for a top field.
2686 			 * That will then cause us here to set up a
2687 			 * top then a bottom field in the normal way.
2688 			 * The alternative to this understanding is
2689 			 * that we set up the second available buffer
2690 			 * as a top field, but that's out of order
2691 			 * since this driver always processes the top
2692 			 * field first - the effect will be the two
2693 			 * buffers being returned in the wrong order,
2694 			 * with the second buffer also being delayed
2695 			 * by one field time (owing to the fifo nature
2696 			 * of videobuf).  Worse still, we'll be stuck
2697 			 * doing fields out of order now every time
2698 			 * until something else causes a field to be
2699 			 * dropped.  By effectively forcing a field to
2700 			 * drop this way then we always get back into
2701 			 * sync within a single frame time.  (Out of
2702 			 * order fields can screw up deinterlacing
2703 			 * algorithms.) */
2704 			if (!V4L2_FIELD_HAS_BOTH(item->vbuf.field)) {
2705 				if (!set->bottom &&
2706 				    item->vbuf.field == V4L2_FIELD_BOTTOM)
2707 					set->bottom = item;
2708 				if (set->top && set->bottom) {
2709 					/*
2710 					 * The buffer set has a top buffer and
2711 					 * a bottom buffer and they are not
2712 					 * copies of each other.
2713 					 */
2714 					set->top_irq = BT848_RISC_TOP;
2715 				}
2716 			}
2717 		}
2718 	}
2719 
2720 	dprintk("%d: next set: top=%p bottom=%p [irq=%d,%d]\n",
2721 		btv->c.nr, set->top, set->bottom,
2722 		set->frame_irq, set->top_irq);
2723 	return 0;
2724 }
2725 
2726 static void
bttv_irq_wakeup_video(struct bttv * btv,struct bttv_buffer_set * wakeup,struct bttv_buffer_set * curr,unsigned int state)2727 bttv_irq_wakeup_video(struct bttv *btv, struct bttv_buffer_set *wakeup,
2728 		      struct bttv_buffer_set *curr, unsigned int state)
2729 {
2730 	u64 ts = ktime_get_ns();
2731 
2732 	if (wakeup->top == wakeup->bottom) {
2733 		if (NULL != wakeup->top && curr->top != wakeup->top) {
2734 			if (irq_debug > 1)
2735 				pr_debug("%d: wakeup: both=%p\n",
2736 					 btv->c.nr, wakeup->top);
2737 			wakeup->top->vbuf.vb2_buf.timestamp = ts;
2738 			wakeup->top->vbuf.sequence = btv->field_count >> 1;
2739 			vb2_buffer_done(&wakeup->top->vbuf.vb2_buf, state);
2740 			if (btv->field_count == 0)
2741 				btor(BT848_INT_VSYNC, BT848_INT_MASK);
2742 		}
2743 	} else {
2744 		if (NULL != wakeup->top && curr->top != wakeup->top) {
2745 			if (irq_debug > 1)
2746 				pr_debug("%d: wakeup: top=%p\n",
2747 					 btv->c.nr, wakeup->top);
2748 			wakeup->top->vbuf.vb2_buf.timestamp = ts;
2749 			wakeup->top->vbuf.sequence = btv->field_count >> 1;
2750 			vb2_buffer_done(&wakeup->top->vbuf.vb2_buf, state);
2751 			if (btv->field_count == 0)
2752 				btor(BT848_INT_VSYNC, BT848_INT_MASK);
2753 		}
2754 		if (NULL != wakeup->bottom && curr->bottom != wakeup->bottom) {
2755 			if (irq_debug > 1)
2756 				pr_debug("%d: wakeup: bottom=%p\n",
2757 					 btv->c.nr, wakeup->bottom);
2758 			wakeup->bottom->vbuf.vb2_buf.timestamp = ts;
2759 			wakeup->bottom->vbuf.sequence = btv->field_count >> 1;
2760 			vb2_buffer_done(&wakeup->bottom->vbuf.vb2_buf, state);
2761 			if (btv->field_count == 0)
2762 				btor(BT848_INT_VSYNC, BT848_INT_MASK);
2763 		}
2764 	}
2765 }
2766 
2767 static void
bttv_irq_wakeup_vbi(struct bttv * btv,struct bttv_buffer * wakeup,unsigned int state)2768 bttv_irq_wakeup_vbi(struct bttv *btv, struct bttv_buffer *wakeup,
2769 				unsigned int state)
2770 {
2771 	if (NULL == wakeup)
2772 		return;
2773 	wakeup->vbuf.vb2_buf.timestamp = ktime_get_ns();
2774 	wakeup->vbuf.sequence = btv->field_count >> 1;
2775 
2776 	/*
2777 	 * Ugly hack for backwards compatibility.
2778 	 * Some applications expect that the last 4 bytes of
2779 	 * the VBI data contains the sequence number.
2780 	 *
2781 	 * This makes it possible to associate the VBI data
2782 	 * with the video frame if you use read() to get the
2783 	 * VBI data.
2784 	 */
2785 	if (vb2_fileio_is_active(wakeup->vbuf.vb2_buf.vb2_queue)) {
2786 		u32 *vaddr = vb2_plane_vaddr(&wakeup->vbuf.vb2_buf, 0);
2787 		unsigned long size =
2788 			vb2_get_plane_payload(&wakeup->vbuf.vb2_buf, 0) / 4;
2789 
2790 		if (vaddr && size) {
2791 			vaddr += size - 1;
2792 			*vaddr = wakeup->vbuf.sequence;
2793 		}
2794 	}
2795 
2796 	vb2_buffer_done(&wakeup->vbuf.vb2_buf, state);
2797 	if (btv->field_count == 0)
2798 		btor(BT848_INT_VSYNC, BT848_INT_MASK);
2799 }
2800 
bttv_irq_timeout(struct timer_list * t)2801 static void bttv_irq_timeout(struct timer_list *t)
2802 {
2803 	struct bttv *btv = from_timer(btv, t, timeout);
2804 	struct bttv_buffer_set old,new;
2805 	struct bttv_buffer *ovbi;
2806 	struct bttv_buffer *item;
2807 	unsigned long flags;
2808 	int seqnr = 0;
2809 
2810 	if (bttv_verbose) {
2811 		pr_info("%d: timeout: drop=%d irq=%d/%d, risc=%08x, ",
2812 			btv->c.nr, btv->framedrop, btv->irq_me, btv->irq_total,
2813 			btread(BT848_RISC_COUNT));
2814 		bttv_print_irqbits(btread(BT848_INT_STAT),0);
2815 		pr_cont("\n");
2816 	}
2817 
2818 	spin_lock_irqsave(&btv->s_lock,flags);
2819 
2820 	/* deactivate stuff */
2821 	memset(&new,0,sizeof(new));
2822 	old  = btv->curr;
2823 	ovbi = btv->cvbi;
2824 	btv->curr = new;
2825 	btv->cvbi = NULL;
2826 	btv->loop_irq = 0;
2827 	bttv_buffer_activate_video(btv, &new);
2828 	bttv_buffer_activate_vbi(btv,   NULL);
2829 	bttv_set_dma(btv, 0);
2830 
2831 	/* wake up */
2832 	bttv_irq_wakeup_video(btv, &old, &new, VB2_BUF_STATE_DONE);
2833 	bttv_irq_wakeup_vbi(btv, ovbi, VB2_BUF_STATE_DONE);
2834 
2835 	/* cancel all outstanding capture / vbi requests */
2836 	if (btv->field_count)
2837 		seqnr++;
2838 	while (!list_empty(&btv->capture)) {
2839 		item = list_entry(btv->capture.next, struct bttv_buffer, list);
2840 		list_del(&item->list);
2841 		item->vbuf.vb2_buf.timestamp = ktime_get_ns();
2842 		item->vbuf.sequence = (btv->field_count >> 1) + seqnr++;
2843 		vb2_buffer_done(&item->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
2844 	}
2845 	while (!list_empty(&btv->vcapture)) {
2846 		item = list_entry(btv->vcapture.next, struct bttv_buffer, list);
2847 		list_del(&item->list);
2848 		item->vbuf.vb2_buf.timestamp = ktime_get_ns();
2849 		item->vbuf.sequence = (btv->field_count >> 1) + seqnr++;
2850 		vb2_buffer_done(&item->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
2851 	}
2852 
2853 	btv->errors++;
2854 	spin_unlock_irqrestore(&btv->s_lock,flags);
2855 }
2856 
2857 static void
bttv_irq_wakeup_top(struct bttv * btv)2858 bttv_irq_wakeup_top(struct bttv *btv)
2859 {
2860 	struct bttv_buffer *wakeup = btv->curr.top;
2861 
2862 	if (NULL == wakeup)
2863 		return;
2864 
2865 	spin_lock(&btv->s_lock);
2866 	btv->curr.top_irq = 0;
2867 	btv->curr.top = NULL;
2868 	bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
2869 	wakeup->vbuf.vb2_buf.timestamp = ktime_get_ns();
2870 	wakeup->vbuf.sequence = btv->field_count >> 1;
2871 	vb2_buffer_done(&wakeup->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
2872 	if (btv->field_count == 0)
2873 		btor(BT848_INT_VSYNC, BT848_INT_MASK);
2874 	spin_unlock(&btv->s_lock);
2875 }
2876 
is_active(struct btcx_riscmem * risc,u32 rc)2877 static inline int is_active(struct btcx_riscmem *risc, u32 rc)
2878 {
2879 	if (rc < risc->dma)
2880 		return 0;
2881 	if (rc > risc->dma + risc->size)
2882 		return 0;
2883 	return 1;
2884 }
2885 
2886 static void
bttv_irq_switch_video(struct bttv * btv)2887 bttv_irq_switch_video(struct bttv *btv)
2888 {
2889 	struct bttv_buffer_set new;
2890 	struct bttv_buffer_set old;
2891 	dma_addr_t rc;
2892 
2893 	spin_lock(&btv->s_lock);
2894 
2895 	/* new buffer set */
2896 	bttv_irq_next_video(btv, &new);
2897 	rc = btread(BT848_RISC_COUNT);
2898 	if ((btv->curr.top    && is_active(&btv->curr.top->top,       rc)) ||
2899 	    (btv->curr.bottom && is_active(&btv->curr.bottom->bottom, rc))) {
2900 		btv->framedrop++;
2901 		if (debug_latency)
2902 			bttv_irq_debug_low_latency(btv, rc);
2903 		spin_unlock(&btv->s_lock);
2904 		return;
2905 	}
2906 
2907 	/* switch over */
2908 	old = btv->curr;
2909 	btv->curr = new;
2910 	btv->loop_irq &= ~BT848_RISC_VIDEO;
2911 	bttv_buffer_activate_video(btv, &new);
2912 	bttv_set_dma(btv, 0);
2913 
2914 	/* switch input */
2915 	if (UNSET != btv->new_input) {
2916 		video_mux(btv,btv->new_input);
2917 		btv->new_input = UNSET;
2918 	}
2919 
2920 	/* wake up finished buffers */
2921 	bttv_irq_wakeup_video(btv, &old, &new, VB2_BUF_STATE_DONE);
2922 	spin_unlock(&btv->s_lock);
2923 }
2924 
2925 static void
bttv_irq_switch_vbi(struct bttv * btv)2926 bttv_irq_switch_vbi(struct bttv *btv)
2927 {
2928 	struct bttv_buffer *new = NULL;
2929 	struct bttv_buffer *old;
2930 	u32 rc;
2931 
2932 	spin_lock(&btv->s_lock);
2933 
2934 	if (!list_empty(&btv->vcapture))
2935 		new = list_entry(btv->vcapture.next, struct bttv_buffer, list);
2936 	old = btv->cvbi;
2937 
2938 	rc = btread(BT848_RISC_COUNT);
2939 	if (NULL != old && (is_active(&old->top,    rc) ||
2940 			    is_active(&old->bottom, rc))) {
2941 		btv->framedrop++;
2942 		if (debug_latency)
2943 			bttv_irq_debug_low_latency(btv, rc);
2944 		spin_unlock(&btv->s_lock);
2945 		return;
2946 	}
2947 
2948 	/* switch */
2949 	btv->cvbi = new;
2950 	btv->loop_irq &= ~BT848_RISC_VBI;
2951 	bttv_buffer_activate_vbi(btv, new);
2952 	bttv_set_dma(btv, 0);
2953 
2954 	bttv_irq_wakeup_vbi(btv, old, VB2_BUF_STATE_DONE);
2955 	spin_unlock(&btv->s_lock);
2956 }
2957 
bttv_irq(int irq,void * dev_id)2958 static irqreturn_t bttv_irq(int irq, void *dev_id)
2959 {
2960 	u32 stat,astat;
2961 	u32 dstat;
2962 	int count;
2963 	struct bttv *btv;
2964 	int handled = 0;
2965 
2966 	btv=(struct bttv *)dev_id;
2967 
2968 	count=0;
2969 	while (1) {
2970 		/* get/clear interrupt status bits */
2971 		stat=btread(BT848_INT_STAT);
2972 		astat=stat&btread(BT848_INT_MASK);
2973 		if (!astat)
2974 			break;
2975 		handled = 1;
2976 		btwrite(stat,BT848_INT_STAT);
2977 
2978 		/* get device status bits */
2979 		dstat=btread(BT848_DSTATUS);
2980 
2981 		if (irq_debug) {
2982 			pr_debug("%d: irq loop=%d fc=%d riscs=%x, riscc=%08x, ",
2983 				 btv->c.nr, count, btv->field_count,
2984 				 stat>>28, btread(BT848_RISC_COUNT));
2985 			bttv_print_irqbits(stat,astat);
2986 			if (stat & BT848_INT_HLOCK)
2987 				pr_cont("   HLOC => %s",
2988 					dstat & BT848_DSTATUS_HLOC
2989 					? "yes" : "no");
2990 			if (stat & BT848_INT_VPRES)
2991 				pr_cont("   PRES => %s",
2992 					dstat & BT848_DSTATUS_PRES
2993 					? "yes" : "no");
2994 			if (stat & BT848_INT_FMTCHG)
2995 				pr_cont("   NUML => %s",
2996 					dstat & BT848_DSTATUS_NUML
2997 					? "625" : "525");
2998 			pr_cont("\n");
2999 		}
3000 
3001 		if (astat&BT848_INT_VSYNC)
3002 			btv->field_count++;
3003 
3004 		if ((astat & BT848_INT_GPINT) && btv->remote) {
3005 			bttv_input_irq(btv);
3006 		}
3007 
3008 		if (astat & BT848_INT_I2CDONE) {
3009 			btv->i2c_done = stat;
3010 			wake_up(&btv->i2c_queue);
3011 		}
3012 
3013 		if ((astat & BT848_INT_RISCI) && (stat & BT848_INT_RISCS_VBI))
3014 			bttv_irq_switch_vbi(btv);
3015 
3016 		if ((astat & BT848_INT_RISCI) && (stat & BT848_INT_RISCS_TOP))
3017 			bttv_irq_wakeup_top(btv);
3018 
3019 		if ((astat & BT848_INT_RISCI) && (stat & BT848_INT_RISCS_VIDEO))
3020 			bttv_irq_switch_video(btv);
3021 
3022 		if ((astat & BT848_INT_HLOCK)  &&  btv->opt_automute)
3023 			/* trigger automute */
3024 			audio_mux_gpio(btv, btv->audio_input, btv->mute);
3025 
3026 		if (astat & (BT848_INT_SCERR|BT848_INT_OCERR)) {
3027 			pr_info("%d: %s%s @ %08x,",
3028 				btv->c.nr,
3029 				(astat & BT848_INT_SCERR) ? "SCERR" : "",
3030 				(astat & BT848_INT_OCERR) ? "OCERR" : "",
3031 				btread(BT848_RISC_COUNT));
3032 			bttv_print_irqbits(stat,astat);
3033 			pr_cont("\n");
3034 			if (bttv_debug)
3035 				bttv_print_riscaddr(btv);
3036 		}
3037 		if (fdsr && astat & BT848_INT_FDSR) {
3038 			pr_info("%d: FDSR @ %08x\n",
3039 				btv->c.nr, btread(BT848_RISC_COUNT));
3040 			if (bttv_debug)
3041 				bttv_print_riscaddr(btv);
3042 		}
3043 
3044 		count++;
3045 		if (count > 4) {
3046 
3047 			if (count > 8 || !(astat & BT848_INT_GPINT)) {
3048 				btwrite(0, BT848_INT_MASK);
3049 
3050 				pr_err("%d: IRQ lockup, cleared int mask [",
3051 				       btv->c.nr);
3052 			} else {
3053 				pr_err("%d: IRQ lockup, clearing GPINT from int mask [",
3054 				       btv->c.nr);
3055 
3056 				btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT),
3057 						BT848_INT_MASK);
3058 			}
3059 
3060 			bttv_print_irqbits(stat,astat);
3061 
3062 			pr_cont("]\n");
3063 		}
3064 	}
3065 	btv->irq_total++;
3066 	if (handled)
3067 		btv->irq_me++;
3068 	return IRQ_RETVAL(handled);
3069 }
3070 
3071 
3072 /* ----------------------------------------------------------------------- */
3073 /* initialization                                                          */
3074 
vdev_init(struct bttv * btv,struct video_device * vfd,const struct video_device * template,const char * type_name)3075 static int vdev_init(struct bttv *btv, struct video_device *vfd,
3076 		     const struct video_device *template,
3077 		     const char *type_name)
3078 {
3079 	int err;
3080 	struct vb2_queue *q;
3081 	*vfd = *template;
3082 	vfd->v4l2_dev = &btv->c.v4l2_dev;
3083 	vfd->release = video_device_release_empty;
3084 	video_set_drvdata(vfd, btv);
3085 	snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)",
3086 		 btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "",
3087 		 type_name, bttv_tvcards[btv->c.type].name);
3088 	if (btv->tuner_type == TUNER_ABSENT) {
3089 		v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
3090 		v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
3091 		v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
3092 		v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
3093 	}
3094 
3095 	if (strcmp(type_name, "radio") == 0)
3096 		return 0;
3097 
3098 	if (strcmp(type_name, "video") == 0) {
3099 		q = &btv->capq;
3100 		q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
3101 		q->ops = &bttv_video_qops;
3102 	} else if (strcmp(type_name, "vbi") == 0) {
3103 		q = &btv->vbiq;
3104 		q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
3105 		q->ops = &bttv_vbi_qops;
3106 	} else {
3107 		return -EINVAL;
3108 	}
3109 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
3110 	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ | VB2_DMABUF;
3111 	q->mem_ops = &vb2_dma_sg_memops;
3112 	q->drv_priv = btv;
3113 	q->gfp_flags = __GFP_DMA32;
3114 	q->buf_struct_size = sizeof(struct bttv_buffer);
3115 	q->lock = &btv->lock;
3116 	q->min_buffers_needed = 2;
3117 	q->dev = &btv->c.pci->dev;
3118 	err = vb2_queue_init(q);
3119 	if (err)
3120 		return err;
3121 	vfd->queue = q;
3122 
3123 	return 0;
3124 }
3125 
bttv_unregister_video(struct bttv * btv)3126 static void bttv_unregister_video(struct bttv *btv)
3127 {
3128 	video_unregister_device(&btv->video_dev);
3129 	video_unregister_device(&btv->vbi_dev);
3130 	video_unregister_device(&btv->radio_dev);
3131 }
3132 
3133 /* register video4linux devices */
bttv_register_video(struct bttv * btv)3134 static int bttv_register_video(struct bttv *btv)
3135 {
3136 	/* video */
3137 	vdev_init(btv, &btv->video_dev, &bttv_video_template, "video");
3138 	btv->video_dev.device_caps = V4L2_CAP_VIDEO_CAPTURE |
3139 				     V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
3140 	if (btv->tuner_type != TUNER_ABSENT)
3141 		btv->video_dev.device_caps |= V4L2_CAP_TUNER;
3142 
3143 	if (video_register_device(&btv->video_dev, VFL_TYPE_VIDEO,
3144 				  video_nr[btv->c.nr]) < 0)
3145 		goto err;
3146 	pr_info("%d: registered device %s\n",
3147 		btv->c.nr, video_device_node_name(&btv->video_dev));
3148 	if (device_create_file(&btv->video_dev.dev,
3149 				     &dev_attr_card)<0) {
3150 		pr_err("%d: device_create_file 'card' failed\n", btv->c.nr);
3151 		goto err;
3152 	}
3153 
3154 	/* vbi */
3155 	vdev_init(btv, &btv->vbi_dev, &bttv_video_template, "vbi");
3156 	btv->vbi_dev.device_caps = V4L2_CAP_VBI_CAPTURE | V4L2_CAP_READWRITE |
3157 				   V4L2_CAP_STREAMING;
3158 	if (btv->tuner_type != TUNER_ABSENT)
3159 		btv->vbi_dev.device_caps |= V4L2_CAP_TUNER;
3160 
3161 	if (video_register_device(&btv->vbi_dev, VFL_TYPE_VBI,
3162 				  vbi_nr[btv->c.nr]) < 0)
3163 		goto err;
3164 	pr_info("%d: registered device %s\n",
3165 		btv->c.nr, video_device_node_name(&btv->vbi_dev));
3166 
3167 	if (!btv->has_radio)
3168 		return 0;
3169 	/* radio */
3170 	vdev_init(btv, &btv->radio_dev, &radio_template, "radio");
3171 	btv->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
3172 	if (btv->has_saa6588)
3173 		btv->radio_dev.device_caps |= V4L2_CAP_READWRITE |
3174 					      V4L2_CAP_RDS_CAPTURE;
3175 	if (btv->has_tea575x)
3176 		btv->radio_dev.device_caps |= V4L2_CAP_HW_FREQ_SEEK;
3177 	btv->radio_dev.ctrl_handler = &btv->radio_ctrl_handler;
3178 	if (video_register_device(&btv->radio_dev, VFL_TYPE_RADIO,
3179 				  radio_nr[btv->c.nr]) < 0)
3180 		goto err;
3181 	pr_info("%d: registered device %s\n",
3182 		btv->c.nr, video_device_node_name(&btv->radio_dev));
3183 
3184 	/* all done */
3185 	return 0;
3186 
3187  err:
3188 	bttv_unregister_video(btv);
3189 	return -1;
3190 }
3191 
3192 
3193 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
3194 /* response on cards with no firmware is not enabled by OF */
pci_set_command(struct pci_dev * dev)3195 static void pci_set_command(struct pci_dev *dev)
3196 {
3197 #if defined(__powerpc__)
3198 	unsigned int cmd;
3199 
3200 	pci_read_config_dword(dev, PCI_COMMAND, &cmd);
3201 	cmd = (cmd | PCI_COMMAND_MEMORY );
3202 	pci_write_config_dword(dev, PCI_COMMAND, cmd);
3203 #endif
3204 }
3205 
bttv_probe(struct pci_dev * dev,const struct pci_device_id * pci_id)3206 static int bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
3207 {
3208 	struct v4l2_frequency init_freq = {
3209 		.tuner = 0,
3210 		.type = V4L2_TUNER_ANALOG_TV,
3211 		.frequency = 980,
3212 	};
3213 	int result;
3214 	unsigned char lat;
3215 	struct bttv *btv;
3216 	struct v4l2_ctrl_handler *hdl;
3217 
3218 	if (bttv_num == BTTV_MAX)
3219 		return -ENOMEM;
3220 	pr_info("Bt8xx card found (%d)\n", bttv_num);
3221 	bttvs[bttv_num] = btv = kzalloc(sizeof(*btv), GFP_KERNEL);
3222 	if (btv == NULL) {
3223 		pr_err("out of memory\n");
3224 		return -ENOMEM;
3225 	}
3226 	btv->c.nr  = bttv_num;
3227 	snprintf(btv->c.v4l2_dev.name, sizeof(btv->c.v4l2_dev.name),
3228 			"bttv%d", btv->c.nr);
3229 
3230 	/* initialize structs / fill in defaults */
3231 	mutex_init(&btv->lock);
3232 	spin_lock_init(&btv->s_lock);
3233 	spin_lock_init(&btv->gpio_lock);
3234 	init_waitqueue_head(&btv->i2c_queue);
3235 	INIT_LIST_HEAD(&btv->c.subs);
3236 	INIT_LIST_HEAD(&btv->capture);
3237 	INIT_LIST_HEAD(&btv->vcapture);
3238 
3239 	timer_setup(&btv->timeout, bttv_irq_timeout, 0);
3240 
3241 	btv->i2c_rc = -1;
3242 	btv->tuner_type  = UNSET;
3243 	btv->new_input   = UNSET;
3244 	btv->has_radio=radio[btv->c.nr];
3245 
3246 	/* pci stuff (init, get irq/mmio, ... */
3247 	btv->c.pci = dev;
3248 	btv->id  = dev->device;
3249 	if (pci_enable_device(dev)) {
3250 		pr_warn("%d: Can't enable device\n", btv->c.nr);
3251 		result = -EIO;
3252 		goto free_mem;
3253 	}
3254 	if (dma_set_mask(&dev->dev, DMA_BIT_MASK(32))) {
3255 		pr_warn("%d: No suitable DMA available\n", btv->c.nr);
3256 		result = -EIO;
3257 		goto free_mem;
3258 	}
3259 	if (!request_mem_region(pci_resource_start(dev,0),
3260 				pci_resource_len(dev,0),
3261 				btv->c.v4l2_dev.name)) {
3262 		pr_warn("%d: can't request iomem (0x%llx)\n",
3263 			btv->c.nr,
3264 			(unsigned long long)pci_resource_start(dev, 0));
3265 		result = -EBUSY;
3266 		goto free_mem;
3267 	}
3268 	pci_set_master(dev);
3269 	pci_set_command(dev);
3270 
3271 	result = v4l2_device_register(&dev->dev, &btv->c.v4l2_dev);
3272 	if (result < 0) {
3273 		pr_warn("%d: v4l2_device_register() failed\n", btv->c.nr);
3274 		goto fail0;
3275 	}
3276 	hdl = &btv->ctrl_handler;
3277 	v4l2_ctrl_handler_init(hdl, 20);
3278 	btv->c.v4l2_dev.ctrl_handler = hdl;
3279 	v4l2_ctrl_handler_init(&btv->radio_ctrl_handler, 6);
3280 
3281 	btv->revision = dev->revision;
3282 	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
3283 	pr_info("%d: Bt%d (rev %d) at %s, irq: %d, latency: %d, mmio: 0x%llx\n",
3284 		bttv_num, btv->id, btv->revision, pci_name(dev),
3285 		btv->c.pci->irq, lat,
3286 		(unsigned long long)pci_resource_start(dev, 0));
3287 	schedule();
3288 
3289 	btv->bt848_mmio = ioremap(pci_resource_start(dev, 0), 0x1000);
3290 	if (NULL == btv->bt848_mmio) {
3291 		pr_err("%d: ioremap() failed\n", btv->c.nr);
3292 		result = -EIO;
3293 		goto fail1;
3294 	}
3295 
3296 	/* identify card */
3297 	bttv_idcard(btv);
3298 
3299 	/* disable irqs, register irq handler */
3300 	btwrite(0, BT848_INT_MASK);
3301 	result = request_irq(btv->c.pci->irq, bttv_irq,
3302 	    IRQF_SHARED, btv->c.v4l2_dev.name, (void *)btv);
3303 	if (result < 0) {
3304 		pr_err("%d: can't get IRQ %d\n",
3305 		       bttv_num, btv->c.pci->irq);
3306 		goto fail1;
3307 	}
3308 
3309 	if (0 != bttv_handle_chipset(btv)) {
3310 		result = -EIO;
3311 		goto fail2;
3312 	}
3313 
3314 	/* init options from insmod args */
3315 	btv->opt_combfilter = combfilter;
3316 	bttv_ctrl_combfilter.def = combfilter;
3317 	bttv_ctrl_lumafilter.def = lumafilter;
3318 	btv->opt_automute   = automute;
3319 	bttv_ctrl_automute.def = automute;
3320 	bttv_ctrl_agc_crush.def = agc_crush;
3321 	btv->opt_vcr_hack   = vcr_hack;
3322 	bttv_ctrl_vcr_hack.def = vcr_hack;
3323 	bttv_ctrl_whitecrush_upper.def = whitecrush_upper;
3324 	bttv_ctrl_whitecrush_lower.def = whitecrush_lower;
3325 	btv->opt_uv_ratio   = uv_ratio;
3326 	bttv_ctrl_uv_ratio.def = uv_ratio;
3327 	bttv_ctrl_full_luma.def = full_luma_range;
3328 	bttv_ctrl_coring.def = coring;
3329 
3330 	/* fill struct bttv with some useful defaults */
3331 	btv->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
3332 	btv->width = 320;
3333 	btv->height = 240;
3334 	btv->field = V4L2_FIELD_INTERLACED;
3335 	btv->input = 0;
3336 	btv->tvnorm = 0; /* Index into bttv_tvnorms[] i.e. PAL. */
3337 	bttv_vbi_fmt_reset(&btv->vbi_fmt, btv->tvnorm);
3338 	btv->vbi_count[0] = VBI_DEFLINES;
3339 	btv->vbi_count[1] = VBI_DEFLINES;
3340 	btv->do_crop = 0;
3341 
3342 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3343 			V4L2_CID_BRIGHTNESS, 0, 0xff00, 0x100, 32768);
3344 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3345 			V4L2_CID_CONTRAST, 0, 0xff80, 0x80, 0x6c00);
3346 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3347 			V4L2_CID_SATURATION, 0, 0xff80, 0x80, 32768);
3348 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3349 			V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
3350 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3351 			V4L2_CID_HUE, 0, 0xff00, 0x100, 32768);
3352 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3353 			V4L2_CID_CHROMA_AGC, 0, 1, 1, !!chroma_agc);
3354 	v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3355 		V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
3356 	if (btv->volume_gpio)
3357 		v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,
3358 			V4L2_CID_AUDIO_VOLUME, 0, 0xff00, 0x100, 0xff00);
3359 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_combfilter, NULL);
3360 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_automute, NULL);
3361 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_lumafilter, NULL);
3362 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_agc_crush, NULL);
3363 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_vcr_hack, NULL);
3364 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_whitecrush_lower, NULL);
3365 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_whitecrush_upper, NULL);
3366 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_uv_ratio, NULL);
3367 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_full_luma, NULL);
3368 	v4l2_ctrl_new_custom(hdl, &bttv_ctrl_coring, NULL);
3369 
3370 	/* initialize hardware */
3371 	if (bttv_gpio)
3372 		bttv_gpio_tracking(btv,"pre-init");
3373 
3374 	bttv_risc_init_main(btv);
3375 	init_bt848(btv);
3376 
3377 	/* gpio */
3378 	btwrite(0x00, BT848_GPIO_REG_INP);
3379 	btwrite(0x00, BT848_GPIO_OUT_EN);
3380 	if (bttv_verbose)
3381 		bttv_gpio_tracking(btv,"init");
3382 
3383 	/* needs to be done before i2c is registered */
3384 	bttv_init_card1(btv);
3385 
3386 	/* register i2c + gpio */
3387 	init_bttv_i2c(btv);
3388 
3389 	/* some card-specific stuff (needs working i2c) */
3390 	bttv_init_card2(btv);
3391 	bttv_init_tuner(btv);
3392 	if (btv->tuner_type != TUNER_ABSENT) {
3393 		bttv_set_frequency(btv, &init_freq);
3394 		btv->radio_freq = 90500 * 16; /* 90.5Mhz default */
3395 	}
3396 	btv->std = V4L2_STD_PAL;
3397 	init_irqreg(btv);
3398 	if (!bttv_tvcards[btv->c.type].no_video)
3399 		v4l2_ctrl_handler_setup(hdl);
3400 	if (hdl->error) {
3401 		result = hdl->error;
3402 		goto fail2;
3403 	}
3404 	/* mute device */
3405 	audio_mute(btv, 1);
3406 
3407 	/* register video4linux + input */
3408 	if (!bttv_tvcards[btv->c.type].no_video) {
3409 		v4l2_ctrl_add_handler(&btv->radio_ctrl_handler, hdl,
3410 				v4l2_ctrl_radio_filter, false);
3411 		if (btv->radio_ctrl_handler.error) {
3412 			result = btv->radio_ctrl_handler.error;
3413 			goto fail2;
3414 		}
3415 		set_input(btv, btv->input, btv->tvnorm);
3416 		bttv_crop_reset(&btv->crop[0], btv->tvnorm);
3417 		btv->crop[1] = btv->crop[0]; /* current = default */
3418 		disclaim_vbi_lines(btv);
3419 		disclaim_video_lines(btv);
3420 		bttv_register_video(btv);
3421 	}
3422 
3423 	/* add subdevices and autoload dvb-bt8xx if needed */
3424 	if (bttv_tvcards[btv->c.type].has_dvb) {
3425 		bttv_sub_add_device(&btv->c, "dvb");
3426 		request_modules(btv);
3427 	}
3428 
3429 	if (!disable_ir) {
3430 		init_bttv_i2c_ir(btv);
3431 		bttv_input_init(btv);
3432 	}
3433 
3434 	/* everything is fine */
3435 	bttv_num++;
3436 	return 0;
3437 
3438 fail2:
3439 	free_irq(btv->c.pci->irq,btv);
3440 
3441 fail1:
3442 	v4l2_ctrl_handler_free(&btv->ctrl_handler);
3443 	v4l2_ctrl_handler_free(&btv->radio_ctrl_handler);
3444 	v4l2_device_unregister(&btv->c.v4l2_dev);
3445 
3446 fail0:
3447 	if (btv->bt848_mmio)
3448 		iounmap(btv->bt848_mmio);
3449 	release_mem_region(pci_resource_start(btv->c.pci,0),
3450 			   pci_resource_len(btv->c.pci,0));
3451 	pci_disable_device(btv->c.pci);
3452 
3453 free_mem:
3454 	bttvs[btv->c.nr] = NULL;
3455 	kfree(btv);
3456 	return result;
3457 }
3458 
bttv_remove(struct pci_dev * pci_dev)3459 static void bttv_remove(struct pci_dev *pci_dev)
3460 {
3461 	struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
3462 	struct bttv *btv = to_bttv(v4l2_dev);
3463 
3464 	if (bttv_verbose)
3465 		pr_info("%d: unloading\n", btv->c.nr);
3466 
3467 	if (bttv_tvcards[btv->c.type].has_dvb)
3468 		flush_request_modules(btv);
3469 
3470 	/* shutdown everything (DMA+IRQs) */
3471 	btand(~15, BT848_GPIO_DMA_CTL);
3472 	btwrite(0, BT848_INT_MASK);
3473 	btwrite(~0x0, BT848_INT_STAT);
3474 	btwrite(0x0, BT848_GPIO_OUT_EN);
3475 	if (bttv_gpio)
3476 		bttv_gpio_tracking(btv,"cleanup");
3477 
3478 	/* tell gpio modules we are leaving ... */
3479 	btv->shutdown=1;
3480 	bttv_input_fini(btv);
3481 	bttv_sub_del_devices(&btv->c);
3482 
3483 	/* unregister i2c_bus + input */
3484 	fini_bttv_i2c(btv);
3485 
3486 	/* unregister video4linux */
3487 	bttv_unregister_video(btv);
3488 
3489 	/* free allocated memory */
3490 	v4l2_ctrl_handler_free(&btv->ctrl_handler);
3491 	v4l2_ctrl_handler_free(&btv->radio_ctrl_handler);
3492 	btcx_riscmem_free(btv->c.pci,&btv->main);
3493 
3494 	/* free resources */
3495 	free_irq(btv->c.pci->irq,btv);
3496 	del_timer_sync(&btv->timeout);
3497 	iounmap(btv->bt848_mmio);
3498 	release_mem_region(pci_resource_start(btv->c.pci,0),
3499 			   pci_resource_len(btv->c.pci,0));
3500 	pci_disable_device(btv->c.pci);
3501 
3502 	v4l2_device_unregister(&btv->c.v4l2_dev);
3503 	bttvs[btv->c.nr] = NULL;
3504 	kfree(btv);
3505 
3506 	return;
3507 }
3508 
bttv_suspend(struct device * dev)3509 static int __maybe_unused bttv_suspend(struct device *dev)
3510 {
3511 	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
3512 	struct bttv *btv = to_bttv(v4l2_dev);
3513 	struct bttv_buffer_set idle;
3514 	unsigned long flags;
3515 
3516 	dprintk("%d: suspend\n", btv->c.nr);
3517 
3518 	/* stop dma + irqs */
3519 	spin_lock_irqsave(&btv->s_lock,flags);
3520 	memset(&idle, 0, sizeof(idle));
3521 	btv->state.video = btv->curr;
3522 	btv->state.vbi   = btv->cvbi;
3523 	btv->state.loop_irq = btv->loop_irq;
3524 	btv->curr = idle;
3525 	btv->loop_irq = 0;
3526 	bttv_buffer_activate_video(btv, &idle);
3527 	bttv_buffer_activate_vbi(btv, NULL);
3528 	bttv_set_dma(btv, 0);
3529 	btwrite(0, BT848_INT_MASK);
3530 	spin_unlock_irqrestore(&btv->s_lock,flags);
3531 
3532 	/* save bt878 state */
3533 	btv->state.gpio_enable = btread(BT848_GPIO_OUT_EN);
3534 	btv->state.gpio_data   = gpio_read();
3535 
3536 	btv->state.disabled = 1;
3537 	return 0;
3538 }
3539 
bttv_resume(struct device * dev)3540 static int __maybe_unused bttv_resume(struct device *dev)
3541 {
3542 	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
3543 	struct bttv *btv = to_bttv(v4l2_dev);
3544 	unsigned long flags;
3545 
3546 	dprintk("%d: resume\n", btv->c.nr);
3547 
3548 	btv->state.disabled = 0;
3549 
3550 	/* restore bt878 state */
3551 	bttv_reinit_bt848(btv);
3552 	gpio_inout(0xffffff, btv->state.gpio_enable);
3553 	gpio_write(btv->state.gpio_data);
3554 
3555 	/* restart dma */
3556 	spin_lock_irqsave(&btv->s_lock,flags);
3557 	btv->curr = btv->state.video;
3558 	btv->cvbi = btv->state.vbi;
3559 	btv->loop_irq = btv->state.loop_irq;
3560 	bttv_buffer_activate_video(btv, &btv->curr);
3561 	bttv_buffer_activate_vbi(btv, btv->cvbi);
3562 	bttv_set_dma(btv, 0);
3563 	spin_unlock_irqrestore(&btv->s_lock,flags);
3564 	return 0;
3565 }
3566 
3567 static const struct pci_device_id bttv_pci_tbl[] = {
3568 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT848), 0},
3569 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT849), 0},
3570 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT878), 0},
3571 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT879), 0},
3572 	{PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_FUSION879), 0},
3573 	{0,}
3574 };
3575 
3576 MODULE_DEVICE_TABLE(pci, bttv_pci_tbl);
3577 
3578 static SIMPLE_DEV_PM_OPS(bttv_pm_ops,
3579 			 bttv_suspend,
3580 			 bttv_resume);
3581 
3582 static struct pci_driver bttv_pci_driver = {
3583 	.name      = "bttv",
3584 	.id_table  = bttv_pci_tbl,
3585 	.probe     = bttv_probe,
3586 	.remove    = bttv_remove,
3587 	.driver.pm = &bttv_pm_ops,
3588 };
3589 
bttv_init_module(void)3590 static int __init bttv_init_module(void)
3591 {
3592 	int ret;
3593 
3594 	bttv_num = 0;
3595 
3596 	pr_info("driver version %s loaded\n", BTTV_VERSION);
3597 	if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
3598 		gbuffers = 2;
3599 	if (gbufsize > BTTV_MAX_FBUF)
3600 		gbufsize = BTTV_MAX_FBUF;
3601 	gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
3602 	if (bttv_verbose)
3603 		pr_info("using %d buffers with %dk (%d pages) each for capture\n",
3604 			gbuffers, gbufsize >> 10, gbufsize >> PAGE_SHIFT);
3605 
3606 	bttv_check_chipset();
3607 
3608 	ret = bus_register(&bttv_sub_bus_type);
3609 	if (ret < 0) {
3610 		pr_warn("bus_register error: %d\n", ret);
3611 		return ret;
3612 	}
3613 	ret = pci_register_driver(&bttv_pci_driver);
3614 	if (ret < 0)
3615 		bus_unregister(&bttv_sub_bus_type);
3616 
3617 	return ret;
3618 }
3619 
bttv_cleanup_module(void)3620 static void __exit bttv_cleanup_module(void)
3621 {
3622 	pci_unregister_driver(&bttv_pci_driver);
3623 	bus_unregister(&bttv_sub_bus_type);
3624 }
3625 
3626 module_init(bttv_init_module);
3627 module_exit(bttv_cleanup_module);
3628