Commit | Line | Data |
---|---|---|
a6c2ba28 | 1 | /* |
3acf2809 | 2 | em28xx-core.c - driver for Empia EM2800/EM2820/2840 USB video capture devices |
a6c2ba28 | 3 | |
f7abcd38 MCC |
4 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> |
5 | Markus Rechberger <mrechberger@gmail.com> | |
2e7c6dc3 | 6 | Mauro Carvalho Chehab <mchehab@infradead.org> |
f7abcd38 | 7 | Sascha Sommer <saschasommer@freenet.de> |
a6c2ba28 | 8 | |
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
24 | #include <linux/init.h> | |
25 | #include <linux/list.h> | |
26 | #include <linux/module.h> | |
a6c2ba28 | 27 | #include <linux/usb.h> |
28 | #include <linux/vmalloc.h> | |
1a23f81b | 29 | #include <media/v4l2-common.h> |
a6c2ba28 | 30 | |
f7abcd38 | 31 | #include "em28xx.h" |
a6c2ba28 | 32 | |
33 | /* #define ENABLE_DEBUG_ISOC_FRAMES */ | |
34 | ||
ff699e6b | 35 | static unsigned int core_debug; |
a1a6ee74 NS |
36 | module_param(core_debug, int, 0644); |
37 | MODULE_PARM_DESC(core_debug, "enable debug messages [core]"); | |
a6c2ba28 | 38 | |
3acf2809 | 39 | #define em28xx_coredbg(fmt, arg...) do {\ |
4ac97914 MCC |
40 | if (core_debug) \ |
41 | printk(KERN_INFO "%s %s :"fmt, \ | |
d80e134d | 42 | dev->name, __func__ , ##arg); } while (0) |
a6c2ba28 | 43 | |
ff699e6b | 44 | static unsigned int reg_debug; |
a1a6ee74 NS |
45 | module_param(reg_debug, int, 0644); |
46 | MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]"); | |
a6c2ba28 | 47 | |
3acf2809 | 48 | #define em28xx_regdbg(fmt, arg...) do {\ |
4ac97914 MCC |
49 | if (reg_debug) \ |
50 | printk(KERN_INFO "%s %s :"fmt, \ | |
d80e134d | 51 | dev->name, __func__ , ##arg); } while (0) |
a6c2ba28 | 52 | |
3acf2809 | 53 | static int alt = EM28XX_PINOUT; |
a6c2ba28 | 54 | module_param(alt, int, 0644); |
55 | MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint"); | |
56 | ||
579f72e4 AT |
57 | /* FIXME */ |
58 | #define em28xx_isocdbg(fmt, arg...) do {\ | |
59 | if (core_debug) \ | |
60 | printk(KERN_INFO "%s %s :"fmt, \ | |
61 | dev->name, __func__ , ##arg); } while (0) | |
62 | ||
a6c2ba28 | 63 | /* |
3acf2809 | 64 | * em28xx_read_reg_req() |
a6c2ba28 | 65 | * reads data from the usb device specifying bRequest |
66 | */ | |
3acf2809 | 67 | int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg, |
a6c2ba28 | 68 | char *buf, int len) |
69 | { | |
9e5d6760 MCC |
70 | int ret; |
71 | int pipe = usb_rcvctrlpipe(dev->udev, 0); | |
a6c2ba28 | 72 | |
9f38724a | 73 | if (dev->state & DEV_DISCONNECTED) |
c4a98793 MCC |
74 | return -ENODEV; |
75 | ||
76 | if (len > URB_MAX_CTRL_SIZE) | |
77 | return -EINVAL; | |
9f38724a | 78 | |
9e5d6760 | 79 | if (reg_debug) { |
a1a6ee74 | 80 | printk(KERN_DEBUG "(pipe 0x%08x): " |
9e5d6760 MCC |
81 | "IN: %02x %02x %02x %02x %02x %02x %02x %02x ", |
82 | pipe, | |
83 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
84 | req, 0, 0, | |
85 | reg & 0xff, reg >> 8, | |
86 | len & 0xff, len >> 8); | |
87 | } | |
a6c2ba28 | 88 | |
f2a2e491 | 89 | mutex_lock(&dev->ctrl_urb_lock); |
9e5d6760 | 90 | ret = usb_control_msg(dev->udev, pipe, req, |
a6c2ba28 | 91 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
c4a98793 MCC |
92 | 0x0000, reg, dev->urb_buf, len, HZ); |
93 | if (ret < 0) { | |
94 | if (reg_debug) | |
95 | printk(" failed!\n"); | |
f2a2e491 | 96 | mutex_unlock(&dev->ctrl_urb_lock); |
c4a98793 MCC |
97 | return ret; |
98 | } | |
99 | ||
100 | if (len) | |
101 | memcpy(buf, dev->urb_buf, len); | |
a6c2ba28 | 102 | |
f2a2e491 MCC |
103 | mutex_unlock(&dev->ctrl_urb_lock); |
104 | ||
6ea54d93 | 105 | if (reg_debug) { |
9e5d6760 MCC |
106 | int byte; |
107 | ||
108 | printk("<<<"); | |
6ea54d93 | 109 | for (byte = 0; byte < len; byte++) |
82ac4f87 | 110 | printk(" %02x", (unsigned char)buf[byte]); |
82ac4f87 | 111 | printk("\n"); |
a6c2ba28 | 112 | } |
113 | ||
114 | return ret; | |
115 | } | |
116 | ||
117 | /* | |
3acf2809 | 118 | * em28xx_read_reg_req() |
a6c2ba28 | 119 | * reads data from the usb device specifying bRequest |
120 | */ | |
3acf2809 | 121 | int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg) |
a6c2ba28 | 122 | { |
a6c2ba28 | 123 | int ret; |
9e5d6760 | 124 | u8 val; |
a6c2ba28 | 125 | |
9e5d6760 MCC |
126 | ret = em28xx_read_reg_req_len(dev, req, reg, &val, 1); |
127 | if (ret < 0) | |
c4a98793 | 128 | return ret; |
a6c2ba28 | 129 | |
130 | return val; | |
131 | } | |
132 | ||
3acf2809 | 133 | int em28xx_read_reg(struct em28xx *dev, u16 reg) |
a6c2ba28 | 134 | { |
3acf2809 | 135 | return em28xx_read_reg_req(dev, USB_REQ_GET_STATUS, reg); |
a6c2ba28 | 136 | } |
137 | ||
138 | /* | |
3acf2809 | 139 | * em28xx_write_regs_req() |
a6c2ba28 | 140 | * sends data to the usb device, specifying bRequest |
141 | */ | |
3acf2809 | 142 | int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf, |
a6c2ba28 | 143 | int len) |
144 | { | |
145 | int ret; | |
9e5d6760 | 146 | int pipe = usb_sndctrlpipe(dev->udev, 0); |
a6c2ba28 | 147 | |
9f38724a | 148 | if (dev->state & DEV_DISCONNECTED) |
c67ec53f MCC |
149 | return -ENODEV; |
150 | ||
c4a98793 | 151 | if ((len < 1) || (len > URB_MAX_CTRL_SIZE)) |
c67ec53f | 152 | return -EINVAL; |
9f38724a | 153 | |
a6c2ba28 | 154 | if (reg_debug) { |
9e5d6760 MCC |
155 | int byte; |
156 | ||
a1a6ee74 | 157 | printk(KERN_DEBUG "(pipe 0x%08x): " |
9e5d6760 MCC |
158 | "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>", |
159 | pipe, | |
160 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
161 | req, 0, 0, | |
162 | reg & 0xff, reg >> 8, | |
163 | len & 0xff, len >> 8); | |
164 | ||
165 | for (byte = 0; byte < len; byte++) | |
166 | printk(" %02x", (unsigned char)buf[byte]); | |
82ac4f87 | 167 | printk("\n"); |
a6c2ba28 | 168 | } |
169 | ||
f2a2e491 | 170 | mutex_lock(&dev->ctrl_urb_lock); |
c4a98793 | 171 | memcpy(dev->urb_buf, buf, len); |
9e5d6760 | 172 | ret = usb_control_msg(dev->udev, pipe, req, |
a6c2ba28 | 173 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
c4a98793 | 174 | 0x0000, reg, dev->urb_buf, len, HZ); |
f2a2e491 | 175 | mutex_unlock(&dev->ctrl_urb_lock); |
c4a98793 | 176 | |
89b329ef MCC |
177 | if (dev->wait_after_write) |
178 | msleep(dev->wait_after_write); | |
179 | ||
a6c2ba28 | 180 | return ret; |
181 | } | |
182 | ||
3acf2809 | 183 | int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len) |
a6c2ba28 | 184 | { |
c67ec53f MCC |
185 | int rc; |
186 | ||
187 | rc = em28xx_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len); | |
188 | ||
189 | /* Stores GPO/GPIO values at the cache, if changed | |
190 | Only write values should be stored, since input on a GPIO | |
191 | register will return the input bits. | |
192 | Not sure what happens on reading GPO register. | |
193 | */ | |
194 | if (rc >= 0) { | |
6a1acc3b | 195 | if (reg == dev->reg_gpo_num) |
c67ec53f | 196 | dev->reg_gpo = buf[0]; |
6a1acc3b | 197 | else if (reg == dev->reg_gpio_num) |
c67ec53f MCC |
198 | dev->reg_gpio = buf[0]; |
199 | } | |
200 | ||
201 | return rc; | |
a6c2ba28 | 202 | } |
203 | ||
b6972489 DH |
204 | /* Write a single register */ |
205 | int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val) | |
206 | { | |
207 | return em28xx_write_regs(dev, reg, &val, 1); | |
208 | } | |
209 | ||
a6c2ba28 | 210 | /* |
3acf2809 | 211 | * em28xx_write_reg_bits() |
a6c2ba28 | 212 | * sets only some bits (specified by bitmask) of a register, by first reading |
213 | * the actual value | |
214 | */ | |
532fe652 | 215 | static int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val, |
a6c2ba28 | 216 | u8 bitmask) |
217 | { | |
218 | int oldval; | |
219 | u8 newval; | |
6ea54d93 | 220 | |
c67ec53f | 221 | /* Uses cache for gpo/gpio registers */ |
6a1acc3b | 222 | if (reg == dev->reg_gpo_num) |
c67ec53f | 223 | oldval = dev->reg_gpo; |
6a1acc3b | 224 | else if (reg == dev->reg_gpio_num) |
c67ec53f MCC |
225 | oldval = dev->reg_gpio; |
226 | else | |
227 | oldval = em28xx_read_reg(dev, reg); | |
6ea54d93 DSL |
228 | |
229 | if (oldval < 0) | |
a6c2ba28 | 230 | return oldval; |
6ea54d93 | 231 | |
a6c2ba28 | 232 | newval = (((u8) oldval) & ~bitmask) | (val & bitmask); |
c67ec53f | 233 | |
3acf2809 | 234 | return em28xx_write_regs(dev, reg, &newval, 1); |
a6c2ba28 | 235 | } |
236 | ||
35643943 MCC |
237 | /* |
238 | * em28xx_is_ac97_ready() | |
239 | * Checks if ac97 is ready | |
240 | */ | |
241 | static int em28xx_is_ac97_ready(struct em28xx *dev) | |
242 | { | |
243 | int ret, i; | |
244 | ||
245 | /* Wait up to 50 ms for AC97 command to complete */ | |
246 | for (i = 0; i < 10; i++, msleep(5)) { | |
247 | ret = em28xx_read_reg(dev, EM28XX_R43_AC97BUSY); | |
248 | if (ret < 0) | |
249 | return ret; | |
250 | ||
251 | if (!(ret & 0x01)) | |
252 | return 0; | |
253 | } | |
254 | ||
255 | em28xx_warn("AC97 command still being executed: not handled properly!\n"); | |
256 | return -EBUSY; | |
257 | } | |
258 | ||
259 | /* | |
260 | * em28xx_read_ac97() | |
261 | * write a 16 bit value to the specified AC97 address (LSB first!) | |
262 | */ | |
531c98e7 | 263 | int em28xx_read_ac97(struct em28xx *dev, u8 reg) |
35643943 MCC |
264 | { |
265 | int ret; | |
266 | u8 addr = (reg & 0x7f) | 0x80; | |
267 | u16 val; | |
268 | ||
269 | ret = em28xx_is_ac97_ready(dev); | |
270 | if (ret < 0) | |
271 | return ret; | |
272 | ||
273 | ret = em28xx_write_regs(dev, EM28XX_R42_AC97ADDR, &addr, 1); | |
274 | if (ret < 0) | |
275 | return ret; | |
276 | ||
277 | ret = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R40_AC97LSB, | |
278 | (u8 *)&val, sizeof(val)); | |
279 | ||
280 | if (ret < 0) | |
281 | return ret; | |
282 | return le16_to_cpu(val); | |
283 | } | |
284 | ||
a6c2ba28 | 285 | /* |
3acf2809 | 286 | * em28xx_write_ac97() |
a6c2ba28 | 287 | * write a 16 bit value to the specified AC97 address (LSB first!) |
288 | */ | |
531c98e7 | 289 | int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val) |
a6c2ba28 | 290 | { |
35643943 | 291 | int ret; |
a6c2ba28 | 292 | u8 addr = reg & 0x7f; |
35643943 MCC |
293 | __le16 value; |
294 | ||
295 | value = cpu_to_le16(val); | |
296 | ||
297 | ret = em28xx_is_ac97_ready(dev); | |
298 | if (ret < 0) | |
299 | return ret; | |
6ea54d93 | 300 | |
35643943 | 301 | ret = em28xx_write_regs(dev, EM28XX_R40_AC97LSB, (u8 *) &value, 2); |
6ea54d93 | 302 | if (ret < 0) |
a6c2ba28 | 303 | return ret; |
6ea54d93 | 304 | |
41facaa4 | 305 | ret = em28xx_write_regs(dev, EM28XX_R42_AC97ADDR, &addr, 1); |
6ea54d93 | 306 | if (ret < 0) |
a6c2ba28 | 307 | return ret; |
00b8730f | 308 | |
35643943 MCC |
309 | return 0; |
310 | } | |
6ea54d93 | 311 | |
e879b8eb MCC |
312 | struct em28xx_vol_table { |
313 | enum em28xx_amux mux; | |
5faff789 MCC |
314 | u8 reg; |
315 | }; | |
316 | ||
e879b8eb | 317 | static struct em28xx_vol_table inputs[] = { |
5faff789 MCC |
318 | { EM28XX_AMUX_VIDEO, AC97_VIDEO_VOL }, |
319 | { EM28XX_AMUX_LINE_IN, AC97_LINEIN_VOL }, | |
320 | { EM28XX_AMUX_PHONE, AC97_PHONE_VOL }, | |
321 | { EM28XX_AMUX_MIC, AC97_MIC_VOL }, | |
322 | { EM28XX_AMUX_CD, AC97_CD_VOL }, | |
323 | { EM28XX_AMUX_AUX, AC97_AUX_VOL }, | |
324 | { EM28XX_AMUX_PCM_OUT, AC97_PCM_OUT_VOL }, | |
325 | }; | |
326 | ||
327 | static int set_ac97_input(struct em28xx *dev) | |
35643943 | 328 | { |
5faff789 MCC |
329 | int ret, i; |
330 | enum em28xx_amux amux = dev->ctl_ainput; | |
35643943 | 331 | |
5faff789 MCC |
332 | /* EM28XX_AMUX_VIDEO2 is a special case used to indicate that |
333 | em28xx should point to LINE IN, while AC97 should use VIDEO | |
334 | */ | |
335 | if (amux == EM28XX_AMUX_VIDEO2) | |
f1990a9c | 336 | amux = EM28XX_AMUX_VIDEO; |
35643943 | 337 | |
5faff789 MCC |
338 | /* Mute all entres but the one that were selected */ |
339 | for (i = 0; i < ARRAY_SIZE(inputs); i++) { | |
e879b8eb | 340 | if (amux == inputs[i].mux) |
5faff789 MCC |
341 | ret = em28xx_write_ac97(dev, inputs[i].reg, 0x0808); |
342 | else | |
343 | ret = em28xx_write_ac97(dev, inputs[i].reg, 0x8000); | |
35643943 | 344 | |
5faff789 MCC |
345 | if (ret < 0) |
346 | em28xx_warn("couldn't setup AC97 register %d\n", | |
347 | inputs[i].reg); | |
348 | } | |
349 | return 0; | |
a6c2ba28 | 350 | } |
351 | ||
00b8730f | 352 | static int em28xx_set_audio_source(struct em28xx *dev) |
539c96d0 | 353 | { |
1685a6fe | 354 | int ret; |
539c96d0 MCC |
355 | u8 input; |
356 | ||
505b6d0b | 357 | if (dev->board.is_em2800) { |
5faff789 | 358 | if (dev->ctl_ainput == EM28XX_AMUX_VIDEO) |
539c96d0 | 359 | input = EM2800_AUDIO_SRC_TUNER; |
5faff789 MCC |
360 | else |
361 | input = EM2800_AUDIO_SRC_LINE; | |
539c96d0 | 362 | |
41facaa4 | 363 | ret = em28xx_write_regs(dev, EM2800_R08_AUDIOSRC, &input, 1); |
539c96d0 MCC |
364 | if (ret < 0) |
365 | return ret; | |
366 | } | |
367 | ||
505b6d0b | 368 | if (dev->board.has_msp34xx) |
539c96d0 MCC |
369 | input = EM28XX_AUDIO_SRC_TUNER; |
370 | else { | |
371 | switch (dev->ctl_ainput) { | |
372 | case EM28XX_AMUX_VIDEO: | |
373 | input = EM28XX_AUDIO_SRC_TUNER; | |
539c96d0 | 374 | break; |
35643943 | 375 | default: |
539c96d0 | 376 | input = EM28XX_AUDIO_SRC_LINE; |
539c96d0 MCC |
377 | break; |
378 | } | |
379 | } | |
380 | ||
2bd1d9eb VW |
381 | if (dev->board.mute_gpio && dev->mute) |
382 | em28xx_gpio_set(dev, dev->board.mute_gpio); | |
383 | else | |
384 | em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio); | |
385 | ||
41facaa4 | 386 | ret = em28xx_write_reg_bits(dev, EM28XX_R0E_AUDIOSRC, input, 0xc0); |
539c96d0 MCC |
387 | if (ret < 0) |
388 | return ret; | |
00b8730f | 389 | msleep(5); |
539c96d0 | 390 | |
35643943 MCC |
391 | switch (dev->audio_mode.ac97) { |
392 | case EM28XX_NO_AC97: | |
393 | break; | |
5faff789 MCC |
394 | default: |
395 | ret = set_ac97_input(dev); | |
35643943 | 396 | } |
539c96d0 | 397 | |
5faff789 | 398 | return ret; |
539c96d0 MCC |
399 | } |
400 | ||
26cdc76b | 401 | static const struct em28xx_vol_table outputs[] = { |
e879b8eb MCC |
402 | { EM28XX_AOUT_MASTER, AC97_MASTER_VOL }, |
403 | { EM28XX_AOUT_LINE, AC97_LINE_LEVEL_VOL }, | |
404 | { EM28XX_AOUT_MONO, AC97_MASTER_MONO_VOL }, | |
405 | { EM28XX_AOUT_LFE, AC97_LFE_MASTER_VOL }, | |
406 | { EM28XX_AOUT_SURR, AC97_SURR_MASTER_VOL }, | |
35ae6f04 MCC |
407 | }; |
408 | ||
3acf2809 | 409 | int em28xx_audio_analog_set(struct em28xx *dev) |
a6c2ba28 | 410 | { |
35ae6f04 | 411 | int ret, i; |
a2070c66 | 412 | u8 xclk; |
539c96d0 | 413 | |
35643943 MCC |
414 | if (!dev->audio_mode.has_audio) |
415 | return 0; | |
539c96d0 | 416 | |
5faff789 MCC |
417 | /* It is assumed that all devices use master volume for output. |
418 | It would be possible to use also line output. | |
419 | */ | |
35643943 | 420 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { |
35ae6f04 MCC |
421 | /* Mute all outputs */ |
422 | for (i = 0; i < ARRAY_SIZE(outputs); i++) { | |
e879b8eb | 423 | ret = em28xx_write_ac97(dev, outputs[i].reg, 0x8000); |
35ae6f04 MCC |
424 | if (ret < 0) |
425 | em28xx_warn("couldn't setup AC97 register %d\n", | |
e879b8eb | 426 | outputs[i].reg); |
35ae6f04 | 427 | } |
35643943 | 428 | } |
539c96d0 | 429 | |
505b6d0b | 430 | xclk = dev->board.xclk & 0x7f; |
3abee53e | 431 | if (!dev->mute) |
8ed06fd4 | 432 | xclk |= EM28XX_XCLK_AUDIO_UNMUTE; |
3abee53e | 433 | |
a2070c66 | 434 | ret = em28xx_write_reg(dev, EM28XX_R0F_XCLK, xclk); |
539c96d0 MCC |
435 | if (ret < 0) |
436 | return ret; | |
3abee53e | 437 | msleep(10); |
539c96d0 MCC |
438 | |
439 | /* Selects the proper audio input */ | |
440 | ret = em28xx_set_audio_source(dev); | |
a6c2ba28 | 441 | |
35643943 MCC |
442 | /* Sets volume */ |
443 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { | |
444 | int vol; | |
445 | ||
7e4b15e4 RK |
446 | em28xx_write_ac97(dev, AC97_POWER_DOWN_CTRL, 0x4200); |
447 | em28xx_write_ac97(dev, AC97_EXT_AUD_CTRL, 0x0031); | |
448 | em28xx_write_ac97(dev, AC97_PCM_IN_SRATE, 0xbb80); | |
449 | ||
35643943 MCC |
450 | /* LSB: left channel - both channels with the same level */ |
451 | vol = (0x1f - dev->volume) | ((0x1f - dev->volume) << 8); | |
452 | ||
453 | /* Mute device, if needed */ | |
454 | if (dev->mute) | |
455 | vol |= 0x8000; | |
456 | ||
457 | /* Sets volume */ | |
e879b8eb MCC |
458 | for (i = 0; i < ARRAY_SIZE(outputs); i++) { |
459 | if (dev->ctl_aoutput & outputs[i].mux) | |
460 | ret = em28xx_write_ac97(dev, outputs[i].reg, | |
461 | vol); | |
462 | if (ret < 0) | |
463 | em28xx_warn("couldn't setup AC97 register %d\n", | |
464 | outputs[i].reg); | |
465 | } | |
8866f9cf MCC |
466 | |
467 | if (dev->ctl_aoutput & EM28XX_AOUT_PCM_IN) { | |
468 | int sel = ac97_return_record_select(dev->ctl_aoutput); | |
469 | ||
a1a6ee74 NS |
470 | /* Use the same input for both left and right |
471 | channels */ | |
8866f9cf MCC |
472 | sel |= (sel << 8); |
473 | ||
474 | em28xx_write_ac97(dev, AC97_RECORD_SELECT, sel); | |
475 | } | |
35643943 | 476 | } |
00b8730f | 477 | |
539c96d0 MCC |
478 | return ret; |
479 | } | |
480 | EXPORT_SYMBOL_GPL(em28xx_audio_analog_set); | |
a6c2ba28 | 481 | |
35643943 MCC |
482 | int em28xx_audio_setup(struct em28xx *dev) |
483 | { | |
484 | int vid1, vid2, feat, cfg; | |
16c7bcad | 485 | u32 vid; |
35643943 | 486 | |
62f3e69b | 487 | if (dev->chip_id == CHIP_ID_EM2870 || dev->chip_id == CHIP_ID_EM2874) { |
35643943 MCC |
488 | /* Digital only device - don't load any alsa module */ |
489 | dev->audio_mode.has_audio = 0; | |
490 | dev->has_audio_class = 0; | |
491 | dev->has_alsa_audio = 0; | |
492 | return 0; | |
493 | } | |
494 | ||
495 | /* If device doesn't support Usb Audio Class, use vendor class */ | |
496 | if (!dev->has_audio_class) | |
497 | dev->has_alsa_audio = 1; | |
498 | ||
499 | dev->audio_mode.has_audio = 1; | |
500 | ||
501 | /* See how this device is configured */ | |
502 | cfg = em28xx_read_reg(dev, EM28XX_R00_CHIPCFG); | |
503 | if (cfg < 0) | |
504 | cfg = EM28XX_CHIPCFG_AC97; /* Be conservative */ | |
505 | else | |
506 | em28xx_info("Config register raw data: 0x%02x\n", cfg); | |
507 | ||
508 | if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == | |
509 | EM28XX_CHIPCFG_I2S_3_SAMPRATES) { | |
510 | em28xx_info("I2S Audio (3 sample rates)\n"); | |
511 | dev->audio_mode.i2s_3rates = 1; | |
512 | } | |
513 | if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == | |
514 | EM28XX_CHIPCFG_I2S_5_SAMPRATES) { | |
515 | em28xx_info("I2S Audio (5 sample rates)\n"); | |
516 | dev->audio_mode.i2s_5rates = 1; | |
517 | } | |
518 | ||
de84830e DH |
519 | if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) != EM28XX_CHIPCFG_AC97) { |
520 | /* Skip the code that does AC97 vendor detection */ | |
35643943 MCC |
521 | dev->audio_mode.ac97 = EM28XX_NO_AC97; |
522 | goto init_audio; | |
523 | } | |
524 | ||
525 | dev->audio_mode.ac97 = EM28XX_AC97_OTHER; | |
526 | ||
527 | vid1 = em28xx_read_ac97(dev, AC97_VENDOR_ID1); | |
528 | if (vid1 < 0) { | |
529 | /* Device likely doesn't support AC97 */ | |
530 | em28xx_warn("AC97 chip type couldn't be determined\n"); | |
531 | goto init_audio; | |
532 | } | |
533 | ||
534 | vid2 = em28xx_read_ac97(dev, AC97_VENDOR_ID2); | |
535 | if (vid2 < 0) | |
536 | goto init_audio; | |
537 | ||
16c7bcad MCC |
538 | vid = vid1 << 16 | vid2; |
539 | ||
540 | dev->audio_mode.ac97_vendor_id = vid; | |
541 | em28xx_warn("AC97 vendor ID = 0x%08x\n", vid); | |
35643943 MCC |
542 | |
543 | feat = em28xx_read_ac97(dev, AC97_RESET); | |
544 | if (feat < 0) | |
545 | goto init_audio; | |
546 | ||
547 | dev->audio_mode.ac97_feat = feat; | |
548 | em28xx_warn("AC97 features = 0x%04x\n", feat); | |
549 | ||
16c7bcad MCC |
550 | /* Try to identify what audio processor we have */ |
551 | if ((vid == 0xffffffff) && (feat == 0x6a90)) | |
35643943 | 552 | dev->audio_mode.ac97 = EM28XX_AC97_EM202; |
209acc02 MCC |
553 | else if ((vid >> 8) == 0x838476) |
554 | dev->audio_mode.ac97 = EM28XX_AC97_SIGMATEL; | |
35643943 MCC |
555 | |
556 | init_audio: | |
557 | /* Reports detected AC97 processor */ | |
558 | switch (dev->audio_mode.ac97) { | |
559 | case EM28XX_NO_AC97: | |
560 | em28xx_info("No AC97 audio processor\n"); | |
561 | break; | |
562 | case EM28XX_AC97_EM202: | |
563 | em28xx_info("Empia 202 AC97 audio processor detected\n"); | |
564 | break; | |
209acc02 MCC |
565 | case EM28XX_AC97_SIGMATEL: |
566 | em28xx_info("Sigmatel audio processor detected(stac 97%02x)\n", | |
567 | dev->audio_mode.ac97_vendor_id & 0xff); | |
568 | break; | |
35643943 MCC |
569 | case EM28XX_AC97_OTHER: |
570 | em28xx_warn("Unknown AC97 audio processor detected!\n"); | |
571 | break; | |
572 | default: | |
573 | break; | |
574 | } | |
575 | ||
576 | return em28xx_audio_analog_set(dev); | |
577 | } | |
578 | EXPORT_SYMBOL_GPL(em28xx_audio_setup); | |
579 | ||
3acf2809 | 580 | int em28xx_colorlevels_set_default(struct em28xx *dev) |
a6c2ba28 | 581 | { |
2a29a0d7 MCC |
582 | em28xx_write_reg(dev, EM28XX_R20_YGAIN, 0x10); /* contrast */ |
583 | em28xx_write_reg(dev, EM28XX_R21_YOFFSET, 0x00); /* brightness */ | |
584 | em28xx_write_reg(dev, EM28XX_R22_UVGAIN, 0x10); /* saturation */ | |
585 | em28xx_write_reg(dev, EM28XX_R23_UOFFSET, 0x00); | |
586 | em28xx_write_reg(dev, EM28XX_R24_VOFFSET, 0x00); | |
587 | em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, 0x00); | |
588 | ||
589 | em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20); | |
590 | em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20); | |
591 | em28xx_write_reg(dev, EM28XX_R16_GGAIN, 0x20); | |
592 | em28xx_write_reg(dev, EM28XX_R17_BGAIN, 0x20); | |
593 | em28xx_write_reg(dev, EM28XX_R18_ROFFSET, 0x00); | |
594 | em28xx_write_reg(dev, EM28XX_R19_GOFFSET, 0x00); | |
595 | return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00); | |
a6c2ba28 | 596 | } |
597 | ||
3acf2809 | 598 | int em28xx_capture_start(struct em28xx *dev, int start) |
a6c2ba28 | 599 | { |
ee6e3a86 | 600 | int rc; |
ebef13d4 DH |
601 | |
602 | if (dev->chip_id == CHIP_ID_EM2874) { | |
603 | /* The Transport Stream Enable Register moved in em2874 */ | |
604 | if (!start) { | |
605 | rc = em28xx_write_reg_bits(dev, EM2874_R5F_TS_ENABLE, | |
606 | 0x00, | |
607 | EM2874_TS1_CAPTURE_ENABLE); | |
608 | return rc; | |
609 | } | |
610 | ||
611 | /* Enable Transport Stream */ | |
612 | rc = em28xx_write_reg_bits(dev, EM2874_R5F_TS_ENABLE, | |
613 | EM2874_TS1_CAPTURE_ENABLE, | |
614 | EM2874_TS1_CAPTURE_ENABLE); | |
615 | return rc; | |
616 | } | |
617 | ||
618 | ||
a6c2ba28 | 619 | /* FIXME: which is the best order? */ |
620 | /* video registers are sampled by VREF */ | |
41facaa4 | 621 | rc = em28xx_write_reg_bits(dev, EM28XX_R0C_USBSUSP, |
ee6e3a86 MCC |
622 | start ? 0x10 : 0x00, 0x10); |
623 | if (rc < 0) | |
624 | return rc; | |
625 | ||
626 | if (!start) { | |
627 | /* disable video capture */ | |
2a29a0d7 | 628 | rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x27); |
102a0b08 | 629 | return rc; |
ee6e3a86 MCC |
630 | } |
631 | ||
a6c2ba28 | 632 | /* enable video capture */ |
2a29a0d7 | 633 | rc = em28xx_write_reg(dev, 0x48, 0x00); |
102a0b08 | 634 | |
ee6e3a86 | 635 | if (dev->mode == EM28XX_ANALOG_MODE) |
2a29a0d7 | 636 | rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x67); |
ee6e3a86 | 637 | else |
2a29a0d7 | 638 | rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x37); |
ee6e3a86 | 639 | |
6ea54d93 | 640 | msleep(6); |
ee6e3a86 MCC |
641 | |
642 | return rc; | |
a6c2ba28 | 643 | } |
644 | ||
bddcf633 | 645 | int em28xx_set_outfmt(struct em28xx *dev) |
a6c2ba28 | 646 | { |
bddcf633 MCC |
647 | int ret; |
648 | ||
649 | ret = em28xx_write_reg_bits(dev, EM28XX_R27_OUTFMT, | |
650 | dev->format->reg | 0x20, 0x3f); | |
651 | if (ret < 0) | |
652 | return ret; | |
653 | ||
654 | ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, 0x10); | |
655 | if (ret < 0) | |
656 | return ret; | |
657 | ||
2a29a0d7 | 658 | return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x11); |
a6c2ba28 | 659 | } |
660 | ||
adcb0fa2 AB |
661 | static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, |
662 | u8 ymin, u8 ymax) | |
a6c2ba28 | 663 | { |
6ea54d93 DSL |
664 | em28xx_coredbg("em28xx Scale: (%d,%d)-(%d,%d)\n", |
665 | xmin, ymin, xmax, ymax); | |
a6c2ba28 | 666 | |
41facaa4 MCC |
667 | em28xx_write_regs(dev, EM28XX_R28_XMIN, &xmin, 1); |
668 | em28xx_write_regs(dev, EM28XX_R29_XMAX, &xmax, 1); | |
669 | em28xx_write_regs(dev, EM28XX_R2A_YMIN, &ymin, 1); | |
670 | return em28xx_write_regs(dev, EM28XX_R2B_YMAX, &ymax, 1); | |
a6c2ba28 | 671 | } |
672 | ||
adcb0fa2 | 673 | static int em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart, |
a6c2ba28 | 674 | u16 width, u16 height) |
675 | { | |
676 | u8 cwidth = width; | |
677 | u8 cheight = height; | |
678 | u8 overflow = (height >> 7 & 0x02) | (width >> 8 & 0x01); | |
679 | ||
6ea54d93 DSL |
680 | em28xx_coredbg("em28xx Area Set: (%d,%d)\n", |
681 | (width | (overflow & 2) << 7), | |
a6c2ba28 | 682 | (height | (overflow & 1) << 8)); |
683 | ||
41facaa4 MCC |
684 | em28xx_write_regs(dev, EM28XX_R1C_HSTART, &hstart, 1); |
685 | em28xx_write_regs(dev, EM28XX_R1D_VSTART, &vstart, 1); | |
686 | em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1); | |
687 | em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1); | |
688 | return em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1); | |
a6c2ba28 | 689 | } |
690 | ||
adcb0fa2 | 691 | static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) |
a6c2ba28 | 692 | { |
52c02fcd SS |
693 | u8 mode; |
694 | /* the em2800 scaler only supports scaling down to 50% */ | |
505b6d0b | 695 | if (dev->board.is_em2800) |
52c02fcd SS |
696 | mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00); |
697 | else { | |
698 | u8 buf[2]; | |
699 | buf[0] = h; | |
700 | buf[1] = h >> 8; | |
41facaa4 | 701 | em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2); |
52c02fcd SS |
702 | buf[0] = v; |
703 | buf[1] = v >> 8; | |
41facaa4 | 704 | em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2); |
6ea54d93 DSL |
705 | /* it seems that both H and V scalers must be active |
706 | to work correctly */ | |
a1a6ee74 | 707 | mode = (h || v) ? 0x30 : 0x00; |
74458e6c | 708 | } |
41facaa4 | 709 | return em28xx_write_reg_bits(dev, EM28XX_R26_COMPR, mode, 0x30); |
a6c2ba28 | 710 | } |
711 | ||
712 | /* FIXME: this only function read values from dev */ | |
3acf2809 | 713 | int em28xx_resolution_set(struct em28xx *dev) |
a6c2ba28 | 714 | { |
715 | int width, height; | |
716 | width = norm_maxw(dev); | |
717 | height = norm_maxh(dev) >> 1; | |
718 | ||
bddcf633 | 719 | em28xx_set_outfmt(dev); |
3acf2809 MCC |
720 | em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2); |
721 | em28xx_capture_area_set(dev, 0, 0, width >> 2, height >> 2); | |
722 | return em28xx_scaler_set(dev, dev->hscale, dev->vscale); | |
a6c2ba28 | 723 | } |
724 | ||
3acf2809 | 725 | int em28xx_set_alternate(struct em28xx *dev) |
a6c2ba28 | 726 | { |
727 | int errCode, prev_alt = dev->alt; | |
3687e1e6 | 728 | int i; |
44dc733c | 729 | unsigned int min_pkt_size = dev->width * 2 + 4; |
3687e1e6 | 730 | |
2c4a07b2 | 731 | /* When image size is bigger than a certain value, |
3687e1e6 MCC |
732 | the frame size should be increased, otherwise, only |
733 | green screen will be received. | |
734 | */ | |
44dc733c | 735 | if (dev->width * 2 * dev->height > 720 * 240 * 2) |
3687e1e6 MCC |
736 | min_pkt_size *= 2; |
737 | ||
2c4a07b2 SS |
738 | for (i = 0; i < dev->num_alt; i++) { |
739 | /* stop when the selected alt setting offers enough bandwidth */ | |
740 | if (dev->alt_max_pkt_size[i] >= min_pkt_size) { | |
741 | dev->alt = i; | |
3687e1e6 | 742 | break; |
2c4a07b2 SS |
743 | /* otherwise make sure that we end up with the maximum bandwidth |
744 | because the min_pkt_size equation might be wrong... | |
745 | */ | |
746 | } else if (dev->alt_max_pkt_size[i] > | |
747 | dev->alt_max_pkt_size[dev->alt]) | |
748 | dev->alt = i; | |
749 | } | |
a6c2ba28 | 750 | |
751 | if (dev->alt != prev_alt) { | |
3687e1e6 MCC |
752 | em28xx_coredbg("minimum isoc packet size: %u (alt=%d)\n", |
753 | min_pkt_size, dev->alt); | |
a6c2ba28 | 754 | dev->max_pkt_size = dev->alt_max_pkt_size[dev->alt]; |
3687e1e6 MCC |
755 | em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n", |
756 | dev->alt, dev->max_pkt_size); | |
a6c2ba28 | 757 | errCode = usb_set_interface(dev->udev, 0, dev->alt); |
758 | if (errCode < 0) { | |
6ea54d93 | 759 | em28xx_errdev("cannot change alternate number to %d (error=%i)\n", |
3687e1e6 | 760 | dev->alt, errCode); |
a6c2ba28 | 761 | return errCode; |
762 | } | |
763 | } | |
764 | return 0; | |
765 | } | |
579f72e4 | 766 | |
c67ec53f MCC |
767 | int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio) |
768 | { | |
769 | int rc = 0; | |
770 | ||
771 | if (!gpio) | |
772 | return rc; | |
773 | ||
2fe3e2ee MCC |
774 | if (dev->mode != EM28XX_SUSPEND) { |
775 | em28xx_write_reg(dev, 0x48, 0x00); | |
776 | if (dev->mode == EM28XX_ANALOG_MODE) | |
777 | em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x67); | |
778 | else | |
779 | em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x37); | |
780 | msleep(6); | |
781 | } | |
c67ec53f MCC |
782 | |
783 | /* Send GPIO reset sequences specified at board entry */ | |
784 | while (gpio->sleep >= 0) { | |
785 | if (gpio->reg >= 0) { | |
786 | rc = em28xx_write_reg_bits(dev, | |
787 | gpio->reg, | |
788 | gpio->val, | |
789 | gpio->mask); | |
790 | if (rc < 0) | |
791 | return rc; | |
792 | } | |
793 | if (gpio->sleep > 0) | |
794 | msleep(gpio->sleep); | |
795 | ||
796 | gpio++; | |
797 | } | |
798 | return rc; | |
799 | } | |
800 | ||
801 | int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode) | |
802 | { | |
803 | if (dev->mode == set_mode) | |
804 | return 0; | |
805 | ||
2fe3e2ee | 806 | if (set_mode == EM28XX_SUSPEND) { |
c67ec53f | 807 | dev->mode = set_mode; |
2fe3e2ee MCC |
808 | |
809 | /* FIXME: add suspend support for ac97 */ | |
810 | ||
811 | return em28xx_gpio_set(dev, dev->board.suspend_gpio); | |
c67ec53f MCC |
812 | } |
813 | ||
814 | dev->mode = set_mode; | |
815 | ||
816 | if (dev->mode == EM28XX_DIGITAL_MODE) | |
f502e861 | 817 | return em28xx_gpio_set(dev, dev->board.dvb_gpio); |
c67ec53f | 818 | else |
f502e861 | 819 | return em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio); |
c67ec53f MCC |
820 | } |
821 | EXPORT_SYMBOL_GPL(em28xx_set_mode); | |
822 | ||
579f72e4 AT |
823 | /* ------------------------------------------------------------------ |
824 | URB control | |
825 | ------------------------------------------------------------------*/ | |
826 | ||
827 | /* | |
828 | * IRQ callback, called by URB callback | |
829 | */ | |
830 | static void em28xx_irq_callback(struct urb *urb) | |
831 | { | |
832 | struct em28xx_dmaqueue *dma_q = urb->context; | |
833 | struct em28xx *dev = container_of(dma_q, struct em28xx, vidq); | |
834 | int rc, i; | |
835 | ||
aa5a1821 RK |
836 | switch (urb->status) { |
837 | case 0: /* success */ | |
838 | case -ETIMEDOUT: /* NAK */ | |
839 | break; | |
840 | case -ECONNRESET: /* kill */ | |
841 | case -ENOENT: | |
842 | case -ESHUTDOWN: | |
843 | return; | |
844 | default: /* error */ | |
845 | em28xx_isocdbg("urb completition error %d.\n", urb->status); | |
846 | break; | |
847 | } | |
848 | ||
579f72e4 AT |
849 | /* Copy data from URB */ |
850 | spin_lock(&dev->slock); | |
851 | rc = dev->isoc_ctl.isoc_copy(dev, urb); | |
852 | spin_unlock(&dev->slock); | |
853 | ||
854 | /* Reset urb buffers */ | |
855 | for (i = 0; i < urb->number_of_packets; i++) { | |
856 | urb->iso_frame_desc[i].status = 0; | |
857 | urb->iso_frame_desc[i].actual_length = 0; | |
858 | } | |
859 | urb->status = 0; | |
860 | ||
861 | urb->status = usb_submit_urb(urb, GFP_ATOMIC); | |
862 | if (urb->status) { | |
4269a8ee DH |
863 | em28xx_isocdbg("urb resubmit failed (error=%i)\n", |
864 | urb->status); | |
579f72e4 AT |
865 | } |
866 | } | |
867 | ||
868 | /* | |
869 | * Stop and Deallocate URBs | |
870 | */ | |
871 | void em28xx_uninit_isoc(struct em28xx *dev) | |
872 | { | |
873 | struct urb *urb; | |
874 | int i; | |
875 | ||
876 | em28xx_isocdbg("em28xx: called em28xx_uninit_isoc\n"); | |
877 | ||
878 | dev->isoc_ctl.nfields = -1; | |
879 | for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { | |
880 | urb = dev->isoc_ctl.urb[i]; | |
881 | if (urb) { | |
9c06210b RK |
882 | if (!irqs_disabled()) |
883 | usb_kill_urb(urb); | |
884 | else | |
885 | usb_unlink_urb(urb); | |
886 | ||
579f72e4 AT |
887 | if (dev->isoc_ctl.transfer_buffer[i]) { |
888 | usb_buffer_free(dev->udev, | |
6ea54d93 DSL |
889 | urb->transfer_buffer_length, |
890 | dev->isoc_ctl.transfer_buffer[i], | |
891 | urb->transfer_dma); | |
579f72e4 AT |
892 | } |
893 | usb_free_urb(urb); | |
894 | dev->isoc_ctl.urb[i] = NULL; | |
895 | } | |
896 | dev->isoc_ctl.transfer_buffer[i] = NULL; | |
897 | } | |
898 | ||
899 | kfree(dev->isoc_ctl.urb); | |
900 | kfree(dev->isoc_ctl.transfer_buffer); | |
901 | ||
902 | dev->isoc_ctl.urb = NULL; | |
903 | dev->isoc_ctl.transfer_buffer = NULL; | |
904 | dev->isoc_ctl.num_bufs = 0; | |
905 | ||
906 | em28xx_capture_start(dev, 0); | |
907 | } | |
908 | EXPORT_SYMBOL_GPL(em28xx_uninit_isoc); | |
909 | ||
910 | /* | |
911 | * Allocate URBs and start IRQ | |
912 | */ | |
913 | int em28xx_init_isoc(struct em28xx *dev, int max_packets, | |
914 | int num_bufs, int max_pkt_size, | |
c67ec53f | 915 | int (*isoc_copy) (struct em28xx *dev, struct urb *urb)) |
579f72e4 AT |
916 | { |
917 | struct em28xx_dmaqueue *dma_q = &dev->vidq; | |
918 | int i; | |
919 | int sb_size, pipe; | |
920 | struct urb *urb; | |
921 | int j, k; | |
922 | int rc; | |
923 | ||
924 | em28xx_isocdbg("em28xx: called em28xx_prepare_isoc\n"); | |
925 | ||
926 | /* De-allocates all pending stuff */ | |
927 | em28xx_uninit_isoc(dev); | |
928 | ||
929 | dev->isoc_ctl.isoc_copy = isoc_copy; | |
930 | dev->isoc_ctl.num_bufs = num_bufs; | |
931 | ||
932 | dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL); | |
933 | if (!dev->isoc_ctl.urb) { | |
934 | em28xx_errdev("cannot alloc memory for usb buffers\n"); | |
935 | return -ENOMEM; | |
936 | } | |
937 | ||
938 | dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs, | |
939 | GFP_KERNEL); | |
094f9b4b | 940 | if (!dev->isoc_ctl.transfer_buffer) { |
579f72e4 AT |
941 | em28xx_errdev("cannot allocate memory for usbtransfer\n"); |
942 | kfree(dev->isoc_ctl.urb); | |
943 | return -ENOMEM; | |
944 | } | |
945 | ||
946 | dev->isoc_ctl.max_pkt_size = max_pkt_size; | |
947 | dev->isoc_ctl.buf = NULL; | |
948 | ||
949 | sb_size = max_packets * dev->isoc_ctl.max_pkt_size; | |
950 | ||
951 | /* allocate urbs and transfer buffers */ | |
952 | for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { | |
953 | urb = usb_alloc_urb(max_packets, GFP_KERNEL); | |
954 | if (!urb) { | |
955 | em28xx_err("cannot alloc isoc_ctl.urb %i\n", i); | |
956 | em28xx_uninit_isoc(dev); | |
957 | return -ENOMEM; | |
958 | } | |
959 | dev->isoc_ctl.urb[i] = urb; | |
960 | ||
961 | dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev, | |
962 | sb_size, GFP_KERNEL, &urb->transfer_dma); | |
963 | if (!dev->isoc_ctl.transfer_buffer[i]) { | |
964 | em28xx_err("unable to allocate %i bytes for transfer" | |
965 | " buffer %i%s\n", | |
966 | sb_size, i, | |
a1a6ee74 | 967 | in_interrupt() ? " while in int" : ""); |
579f72e4 AT |
968 | em28xx_uninit_isoc(dev); |
969 | return -ENOMEM; | |
970 | } | |
971 | memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size); | |
972 | ||
973 | /* FIXME: this is a hack - should be | |
974 | 'desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK' | |
975 | should also be using 'desc.bInterval' | |
976 | */ | |
6ea54d93 | 977 | pipe = usb_rcvisocpipe(dev->udev, |
c67ec53f | 978 | dev->mode == EM28XX_ANALOG_MODE ? 0x82 : 0x84); |
6ea54d93 | 979 | |
579f72e4 AT |
980 | usb_fill_int_urb(urb, dev->udev, pipe, |
981 | dev->isoc_ctl.transfer_buffer[i], sb_size, | |
982 | em28xx_irq_callback, dma_q, 1); | |
983 | ||
984 | urb->number_of_packets = max_packets; | |
985 | urb->transfer_flags = URB_ISO_ASAP; | |
986 | ||
987 | k = 0; | |
988 | for (j = 0; j < max_packets; j++) { | |
989 | urb->iso_frame_desc[j].offset = k; | |
990 | urb->iso_frame_desc[j].length = | |
991 | dev->isoc_ctl.max_pkt_size; | |
992 | k += dev->isoc_ctl.max_pkt_size; | |
993 | } | |
994 | } | |
995 | ||
996 | init_waitqueue_head(&dma_q->wq); | |
997 | ||
c67ec53f | 998 | em28xx_capture_start(dev, 1); |
579f72e4 AT |
999 | |
1000 | /* submit urbs and enables IRQ */ | |
1001 | for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { | |
1002 | rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC); | |
1003 | if (rc) { | |
1004 | em28xx_err("submit of urb %i failed (error=%i)\n", i, | |
1005 | rc); | |
1006 | em28xx_uninit_isoc(dev); | |
1007 | return rc; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | return 0; | |
1012 | } | |
1013 | EXPORT_SYMBOL_GPL(em28xx_init_isoc); | |
1a23f81b MCC |
1014 | |
1015 | /* | |
1016 | * em28xx_wake_i2c() | |
1017 | * configure i2c attached devices | |
1018 | */ | |
1019 | void em28xx_wake_i2c(struct em28xx *dev) | |
1020 | { | |
1021 | struct v4l2_routing route; | |
1022 | int zero = 0; | |
1023 | ||
1024 | route.input = INPUT(dev->ctl_input)->vmux; | |
1025 | route.output = 0; | |
1026 | em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, &zero); | |
1027 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); | |
1028 | em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); | |
1029 | } | |
1030 | ||
1031 | /* | |
1032 | * Device control list | |
1033 | */ | |
1034 | ||
1035 | static LIST_HEAD(em28xx_devlist); | |
1036 | static DEFINE_MUTEX(em28xx_devlist_mutex); | |
1037 | ||
bec43661 | 1038 | struct em28xx *em28xx_get_device(int minor, |
1a23f81b MCC |
1039 | enum v4l2_buf_type *fh_type, |
1040 | int *has_radio) | |
1041 | { | |
1042 | struct em28xx *h, *dev = NULL; | |
1a23f81b MCC |
1043 | |
1044 | *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1045 | *has_radio = 0; | |
1046 | ||
1047 | mutex_lock(&em28xx_devlist_mutex); | |
1048 | list_for_each_entry(h, &em28xx_devlist, devlist) { | |
1049 | if (h->vdev->minor == minor) | |
1050 | dev = h; | |
1051 | if (h->vbi_dev->minor == minor) { | |
1052 | dev = h; | |
1053 | *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
1054 | } | |
1055 | if (h->radio_dev && | |
1056 | h->radio_dev->minor == minor) { | |
1057 | dev = h; | |
1058 | *has_radio = 1; | |
1059 | } | |
1060 | } | |
1061 | mutex_unlock(&em28xx_devlist_mutex); | |
1062 | ||
1063 | return dev; | |
1064 | } | |
1065 | ||
1066 | /* | |
1067 | * em28xx_realease_resources() | |
1068 | * unregisters the v4l2,i2c and usb devices | |
1069 | * called when the device gets disconected or at module unload | |
1070 | */ | |
1071 | void em28xx_remove_from_devlist(struct em28xx *dev) | |
1072 | { | |
1073 | mutex_lock(&em28xx_devlist_mutex); | |
1074 | list_del(&dev->devlist); | |
1075 | mutex_unlock(&em28xx_devlist_mutex); | |
1076 | }; | |
1077 | ||
1078 | void em28xx_add_into_devlist(struct em28xx *dev) | |
1079 | { | |
1080 | mutex_lock(&em28xx_devlist_mutex); | |
1081 | list_add_tail(&dev->devlist, &em28xx_devlist); | |
1082 | mutex_unlock(&em28xx_devlist_mutex); | |
1083 | }; | |
1084 | ||
1085 | /* | |
1086 | * Extension interface | |
1087 | */ | |
1088 | ||
1089 | static LIST_HEAD(em28xx_extension_devlist); | |
1090 | static DEFINE_MUTEX(em28xx_extension_devlist_lock); | |
1091 | ||
1092 | int em28xx_register_extension(struct em28xx_ops *ops) | |
1093 | { | |
1094 | struct em28xx *dev = NULL; | |
1095 | ||
1096 | mutex_lock(&em28xx_devlist_mutex); | |
1097 | mutex_lock(&em28xx_extension_devlist_lock); | |
1098 | list_add_tail(&ops->next, &em28xx_extension_devlist); | |
1099 | list_for_each_entry(dev, &em28xx_devlist, devlist) { | |
1100 | if (dev) | |
1101 | ops->init(dev); | |
1102 | } | |
1103 | printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name); | |
1104 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1105 | mutex_unlock(&em28xx_devlist_mutex); | |
1106 | return 0; | |
1107 | } | |
1108 | EXPORT_SYMBOL(em28xx_register_extension); | |
1109 | ||
1110 | void em28xx_unregister_extension(struct em28xx_ops *ops) | |
1111 | { | |
1112 | struct em28xx *dev = NULL; | |
1113 | ||
1114 | mutex_lock(&em28xx_devlist_mutex); | |
1115 | list_for_each_entry(dev, &em28xx_devlist, devlist) { | |
1116 | if (dev) | |
1117 | ops->fini(dev); | |
1118 | } | |
1119 | ||
1120 | mutex_lock(&em28xx_extension_devlist_lock); | |
1121 | printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name); | |
1122 | list_del(&ops->next); | |
1123 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1124 | mutex_unlock(&em28xx_devlist_mutex); | |
1125 | } | |
1126 | EXPORT_SYMBOL(em28xx_unregister_extension); | |
1127 | ||
1128 | void em28xx_init_extension(struct em28xx *dev) | |
1129 | { | |
1130 | struct em28xx_ops *ops = NULL; | |
1131 | ||
1132 | mutex_lock(&em28xx_extension_devlist_lock); | |
1133 | if (!list_empty(&em28xx_extension_devlist)) { | |
1134 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { | |
1135 | if (ops->init) | |
1136 | ops->init(dev); | |
1137 | } | |
1138 | } | |
1139 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1140 | } | |
1141 | ||
1142 | void em28xx_close_extension(struct em28xx *dev) | |
1143 | { | |
1144 | struct em28xx_ops *ops = NULL; | |
1145 | ||
1146 | mutex_lock(&em28xx_extension_devlist_lock); | |
1147 | if (!list_empty(&em28xx_extension_devlist)) { | |
1148 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { | |
1149 | if (ops->fini) | |
1150 | ops->fini(dev); | |
1151 | } | |
1152 | } | |
1153 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1154 | } |