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b517af72 HG |
1 | /* |
2 | * Driver for USB webcams based on Konica chipset. This | |
3 | * chipset is used in Intel YC76 camera. | |
4 | * | |
5 | * Copyright (C) 2010 Hans de Goede <hdegoede@redhat.com> | |
6 | * | |
7 | * Based on the usbvideo v4l1 konicawc driver which is: | |
8 | * | |
9 | * Copyright (C) 2002 Simon Evans <spse@secret.org.uk> | |
10 | * | |
11 | * The code for making gspca work with a webcam with 2 isoc endpoints was | |
12 | * taken from the benq gspca subdriver which is: | |
13 | * | |
14 | * Copyright (C) 2009 Jean-Francois Moine (http://moinejf.free.fr) | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
29 | */ | |
30 | ||
133a9fe9 JP |
31 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
32 | ||
b517af72 HG |
33 | #define MODULE_NAME "konica" |
34 | ||
35 | #include <linux/input.h> | |
36 | #include "gspca.h" | |
37 | ||
38 | MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); | |
39 | MODULE_DESCRIPTION("Konica chipset USB Camera Driver"); | |
40 | MODULE_LICENSE("GPL"); | |
41 | ||
42 | #define WHITEBAL_REG 0x01 | |
43 | #define BRIGHTNESS_REG 0x02 | |
44 | #define SHARPNESS_REG 0x03 | |
45 | #define CONTRAST_REG 0x04 | |
46 | #define SATURATION_REG 0x05 | |
47 | ||
48 | /* specific webcam descriptor */ | |
49 | struct sd { | |
50 | struct gspca_dev gspca_dev; /* !! must be the first item */ | |
51 | struct urb *last_data_urb; | |
52 | u8 snapshot_pressed; | |
b517af72 HG |
53 | }; |
54 | ||
b517af72 HG |
55 | |
56 | /* .priv is what goes to register 8 for this mode, known working values: | |
57 | 0x00 -> 176x144, cropped | |
58 | 0x01 -> 176x144, cropped | |
59 | 0x02 -> 176x144, cropped | |
60 | 0x03 -> 176x144, cropped | |
61 | 0x04 -> 176x144, binned | |
62 | 0x05 -> 320x240 | |
63 | 0x06 -> 320x240 | |
64 | 0x07 -> 160x120, cropped | |
65 | 0x08 -> 160x120, cropped | |
66 | 0x09 -> 160x120, binned (note has 136 lines) | |
67 | 0x0a -> 160x120, binned (note has 136 lines) | |
68 | 0x0b -> 160x120, cropped | |
69 | */ | |
70 | static const struct v4l2_pix_format vga_mode[] = { | |
71 | {160, 120, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE, | |
72 | .bytesperline = 160, | |
73 | .sizeimage = 160 * 136 * 3 / 2 + 960, | |
74 | .colorspace = V4L2_COLORSPACE_SRGB, | |
75 | .priv = 0x0a}, | |
76 | {176, 144, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE, | |
77 | .bytesperline = 176, | |
78 | .sizeimage = 176 * 144 * 3 / 2 + 960, | |
79 | .colorspace = V4L2_COLORSPACE_SRGB, | |
80 | .priv = 0x04}, | |
81 | {320, 240, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE, | |
82 | .bytesperline = 320, | |
83 | .sizeimage = 320 * 240 * 3 / 2 + 960, | |
84 | .colorspace = V4L2_COLORSPACE_SRGB, | |
85 | .priv = 0x05}, | |
86 | }; | |
87 | ||
88 | static void sd_isoc_irq(struct urb *urb); | |
89 | ||
90 | static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index) | |
91 | { | |
92 | struct usb_device *dev = gspca_dev->dev; | |
93 | int ret; | |
94 | ||
95 | if (gspca_dev->usb_err < 0) | |
96 | return; | |
97 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
98 | 0x02, | |
99 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
100 | value, | |
101 | index, | |
102 | NULL, | |
103 | 0, | |
104 | 1000); | |
105 | if (ret < 0) { | |
e163609e HG |
106 | pr_err("reg_w err writing %02x to %02x: %d\n", |
107 | value, index, ret); | |
b517af72 HG |
108 | gspca_dev->usb_err = ret; |
109 | } | |
110 | } | |
111 | ||
112 | static void reg_r(struct gspca_dev *gspca_dev, u16 value, u16 index) | |
113 | { | |
114 | struct usb_device *dev = gspca_dev->dev; | |
115 | int ret; | |
116 | ||
117 | if (gspca_dev->usb_err < 0) | |
118 | return; | |
119 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
120 | 0x03, | |
121 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
122 | value, | |
123 | index, | |
124 | gspca_dev->usb_buf, | |
125 | 2, | |
126 | 1000); | |
127 | if (ret < 0) { | |
e163609e | 128 | pr_err("reg_r err %d\n", ret); |
b517af72 HG |
129 | gspca_dev->usb_err = ret; |
130 | } | |
131 | } | |
132 | ||
133 | static void konica_stream_on(struct gspca_dev *gspca_dev) | |
134 | { | |
135 | reg_w(gspca_dev, 1, 0x0b); | |
136 | } | |
137 | ||
138 | static void konica_stream_off(struct gspca_dev *gspca_dev) | |
139 | { | |
140 | reg_w(gspca_dev, 0, 0x0b); | |
141 | } | |
142 | ||
143 | /* this function is called at probe time */ | |
144 | static int sd_config(struct gspca_dev *gspca_dev, | |
145 | const struct usb_device_id *id) | |
146 | { | |
b517af72 HG |
147 | gspca_dev->cam.cam_mode = vga_mode; |
148 | gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); | |
149 | gspca_dev->cam.no_urb_create = 1; | |
b517af72 | 150 | |
b517af72 HG |
151 | return 0; |
152 | } | |
153 | ||
154 | /* this function is called at probe and resume time */ | |
155 | static int sd_init(struct gspca_dev *gspca_dev) | |
156 | { | |
e163609e HG |
157 | int i; |
158 | ||
159 | /* | |
160 | * The konica needs a freaking large time to "boot" (approx 6.5 sec.), | |
161 | * and does not want to be bothered while doing so :| | |
162 | * Register 0x10 counts from 1 - 3, with 3 being "ready" | |
163 | */ | |
164 | msleep(6000); | |
165 | for (i = 0; i < 20; i++) { | |
166 | reg_r(gspca_dev, 0, 0x10); | |
167 | if (gspca_dev->usb_buf[0] == 3) | |
168 | break; | |
169 | msleep(100); | |
170 | } | |
b517af72 HG |
171 | reg_w(gspca_dev, 0, 0x0d); |
172 | ||
e163609e | 173 | return gspca_dev->usb_err; |
b517af72 HG |
174 | } |
175 | ||
176 | static int sd_start(struct gspca_dev *gspca_dev) | |
177 | { | |
178 | struct sd *sd = (struct sd *) gspca_dev; | |
179 | struct urb *urb; | |
180 | int i, n, packet_size; | |
181 | struct usb_host_interface *alt; | |
182 | struct usb_interface *intf; | |
183 | ||
184 | intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface); | |
185 | alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt); | |
186 | if (!alt) { | |
133a9fe9 | 187 | pr_err("Couldn't get altsetting\n"); |
b517af72 HG |
188 | return -EIO; |
189 | } | |
190 | ||
191 | packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); | |
192 | ||
b517af72 HG |
193 | n = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; |
194 | reg_w(gspca_dev, n, 0x08); | |
195 | ||
196 | konica_stream_on(gspca_dev); | |
197 | ||
198 | if (gspca_dev->usb_err) | |
199 | return gspca_dev->usb_err; | |
200 | ||
201 | /* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */ | |
202 | #if MAX_NURBS < 4 | |
203 | #error "Not enough URBs in the gspca table" | |
204 | #endif | |
205 | #define SD_NPKT 32 | |
206 | for (n = 0; n < 4; n++) { | |
207 | i = n & 1 ? 0 : 1; | |
208 | packet_size = | |
209 | le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize); | |
210 | urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL); | |
de46bfab | 211 | if (!urb) |
b517af72 | 212 | return -ENOMEM; |
b517af72 | 213 | gspca_dev->urb[n] = urb; |
76e241d4 | 214 | urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev, |
b517af72 HG |
215 | packet_size * SD_NPKT, |
216 | GFP_KERNEL, | |
217 | &urb->transfer_dma); | |
218 | if (urb->transfer_buffer == NULL) { | |
133a9fe9 | 219 | pr_err("usb_buffer_alloc failed\n"); |
b517af72 HG |
220 | return -ENOMEM; |
221 | } | |
222 | ||
223 | urb->dev = gspca_dev->dev; | |
224 | urb->context = gspca_dev; | |
225 | urb->transfer_buffer_length = packet_size * SD_NPKT; | |
226 | urb->pipe = usb_rcvisocpipe(gspca_dev->dev, | |
227 | n & 1 ? 0x81 : 0x82); | |
228 | urb->transfer_flags = URB_ISO_ASAP | |
229 | | URB_NO_TRANSFER_DMA_MAP; | |
230 | urb->interval = 1; | |
231 | urb->complete = sd_isoc_irq; | |
232 | urb->number_of_packets = SD_NPKT; | |
233 | for (i = 0; i < SD_NPKT; i++) { | |
234 | urb->iso_frame_desc[i].length = packet_size; | |
235 | urb->iso_frame_desc[i].offset = packet_size * i; | |
236 | } | |
237 | } | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | static void sd_stopN(struct gspca_dev *gspca_dev) | |
243 | { | |
d7e92e15 | 244 | struct sd *sd __maybe_unused = (struct sd *) gspca_dev; |
b517af72 HG |
245 | |
246 | konica_stream_off(gspca_dev); | |
9bc04463 | 247 | #if IS_ENABLED(CONFIG_INPUT) |
b517af72 HG |
248 | /* Don't keep the button in the pressed state "forever" if it was |
249 | pressed when streaming is stopped */ | |
250 | if (sd->snapshot_pressed) { | |
251 | input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); | |
252 | input_sync(gspca_dev->input_dev); | |
253 | sd->snapshot_pressed = 0; | |
254 | } | |
255 | #endif | |
256 | } | |
257 | ||
258 | /* reception of an URB */ | |
259 | static void sd_isoc_irq(struct urb *urb) | |
260 | { | |
261 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; | |
262 | struct sd *sd = (struct sd *) gspca_dev; | |
263 | struct urb *data_urb, *status_urb; | |
264 | u8 *data; | |
265 | int i, st; | |
266 | ||
267 | PDEBUG(D_PACK, "sd isoc irq"); | |
268 | if (!gspca_dev->streaming) | |
269 | return; | |
270 | ||
271 | if (urb->status != 0) { | |
272 | if (urb->status == -ESHUTDOWN) | |
273 | return; /* disconnection */ | |
274 | #ifdef CONFIG_PM | |
275 | if (gspca_dev->frozen) | |
276 | return; | |
277 | #endif | |
c93396e1 | 278 | PERR("urb status: %d", urb->status); |
b517af72 HG |
279 | st = usb_submit_urb(urb, GFP_ATOMIC); |
280 | if (st < 0) | |
133a9fe9 | 281 | pr_err("resubmit urb error %d\n", st); |
b517af72 HG |
282 | return; |
283 | } | |
284 | ||
285 | /* if this is a data URB (ep 0x82), wait */ | |
286 | if (urb->transfer_buffer_length > 32) { | |
287 | sd->last_data_urb = urb; | |
288 | return; | |
289 | } | |
290 | ||
291 | status_urb = urb; | |
292 | data_urb = sd->last_data_urb; | |
293 | sd->last_data_urb = NULL; | |
294 | ||
295 | if (!data_urb || data_urb->start_frame != status_urb->start_frame) { | |
c93396e1 | 296 | PERR("lost sync on frames"); |
b517af72 HG |
297 | goto resubmit; |
298 | } | |
299 | ||
300 | if (data_urb->number_of_packets != status_urb->number_of_packets) { | |
c93396e1 TK |
301 | PERR("no packets does not match, data: %d, status: %d", |
302 | data_urb->number_of_packets, | |
303 | status_urb->number_of_packets); | |
b517af72 HG |
304 | goto resubmit; |
305 | } | |
306 | ||
307 | for (i = 0; i < status_urb->number_of_packets; i++) { | |
308 | if (data_urb->iso_frame_desc[i].status || | |
309 | status_urb->iso_frame_desc[i].status) { | |
c93396e1 TK |
310 | PERR("pkt %d data-status %d, status-status %d", i, |
311 | data_urb->iso_frame_desc[i].status, | |
312 | status_urb->iso_frame_desc[i].status); | |
b517af72 HG |
313 | gspca_dev->last_packet_type = DISCARD_PACKET; |
314 | continue; | |
315 | } | |
316 | ||
317 | if (status_urb->iso_frame_desc[i].actual_length != 1) { | |
c93396e1 TK |
318 | PERR("bad status packet length %d", |
319 | status_urb->iso_frame_desc[i].actual_length); | |
b517af72 HG |
320 | gspca_dev->last_packet_type = DISCARD_PACKET; |
321 | continue; | |
322 | } | |
323 | ||
324 | st = *((u8 *)status_urb->transfer_buffer | |
325 | + status_urb->iso_frame_desc[i].offset); | |
326 | ||
327 | data = (u8 *)data_urb->transfer_buffer | |
328 | + data_urb->iso_frame_desc[i].offset; | |
329 | ||
330 | /* st: 0x80-0xff: frame start with frame number (ie 0-7f) | |
331 | * otherwise: | |
332 | * bit 0 0: keep packet | |
333 | * 1: drop packet (padding data) | |
334 | * | |
335 | * bit 4 0 button not clicked | |
336 | * 1 button clicked | |
337 | * button is used to `take a picture' (in software) | |
338 | */ | |
339 | if (st & 0x80) { | |
340 | gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); | |
341 | gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0); | |
342 | } else { | |
9bc04463 | 343 | #if IS_ENABLED(CONFIG_INPUT) |
b517af72 HG |
344 | u8 button_state = st & 0x40 ? 1 : 0; |
345 | if (sd->snapshot_pressed != button_state) { | |
346 | input_report_key(gspca_dev->input_dev, | |
347 | KEY_CAMERA, | |
348 | button_state); | |
349 | input_sync(gspca_dev->input_dev); | |
350 | sd->snapshot_pressed = button_state; | |
351 | } | |
352 | #endif | |
353 | if (st & 0x01) | |
354 | continue; | |
355 | } | |
356 | gspca_frame_add(gspca_dev, INTER_PACKET, data, | |
357 | data_urb->iso_frame_desc[i].actual_length); | |
358 | } | |
359 | ||
360 | resubmit: | |
361 | if (data_urb) { | |
362 | st = usb_submit_urb(data_urb, GFP_ATOMIC); | |
363 | if (st < 0) | |
c93396e1 | 364 | PERR("usb_submit_urb(data_urb) ret %d", st); |
b517af72 HG |
365 | } |
366 | st = usb_submit_urb(status_urb, GFP_ATOMIC); | |
367 | if (st < 0) | |
c93396e1 | 368 | PERR("usb_submit_urb(status_urb) ret %d\n", st); |
b517af72 HG |
369 | } |
370 | ||
1bdee422 | 371 | static int sd_s_ctrl(struct v4l2_ctrl *ctrl) |
b517af72 | 372 | { |
1bdee422 HV |
373 | struct gspca_dev *gspca_dev = |
374 | container_of(ctrl->handler, struct gspca_dev, ctrl_handler); | |
b517af72 | 375 | |
1bdee422 | 376 | gspca_dev->usb_err = 0; |
b517af72 | 377 | |
1bdee422 HV |
378 | if (!gspca_dev->streaming) |
379 | return 0; | |
b517af72 | 380 | |
1bdee422 HV |
381 | switch (ctrl->id) { |
382 | case V4L2_CID_BRIGHTNESS: | |
b517af72 | 383 | konica_stream_off(gspca_dev); |
1bdee422 | 384 | reg_w(gspca_dev, ctrl->val, BRIGHTNESS_REG); |
b517af72 | 385 | konica_stream_on(gspca_dev); |
1bdee422 HV |
386 | break; |
387 | case V4L2_CID_CONTRAST: | |
b517af72 | 388 | konica_stream_off(gspca_dev); |
1bdee422 | 389 | reg_w(gspca_dev, ctrl->val, CONTRAST_REG); |
b517af72 | 390 | konica_stream_on(gspca_dev); |
1bdee422 HV |
391 | break; |
392 | case V4L2_CID_SATURATION: | |
b517af72 | 393 | konica_stream_off(gspca_dev); |
1bdee422 | 394 | reg_w(gspca_dev, ctrl->val, SATURATION_REG); |
b517af72 | 395 | konica_stream_on(gspca_dev); |
1bdee422 HV |
396 | break; |
397 | case V4L2_CID_WHITE_BALANCE_TEMPERATURE: | |
b517af72 | 398 | konica_stream_off(gspca_dev); |
1bdee422 | 399 | reg_w(gspca_dev, ctrl->val, WHITEBAL_REG); |
b517af72 | 400 | konica_stream_on(gspca_dev); |
1bdee422 HV |
401 | break; |
402 | case V4L2_CID_SHARPNESS: | |
403 | konica_stream_off(gspca_dev); | |
404 | reg_w(gspca_dev, ctrl->val, SHARPNESS_REG); | |
405 | konica_stream_on(gspca_dev); | |
406 | break; | |
b517af72 | 407 | } |
1bdee422 | 408 | return gspca_dev->usb_err; |
b517af72 HG |
409 | } |
410 | ||
1bdee422 HV |
411 | static const struct v4l2_ctrl_ops sd_ctrl_ops = { |
412 | .s_ctrl = sd_s_ctrl, | |
413 | }; | |
b517af72 | 414 | |
1bdee422 HV |
415 | static int sd_init_controls(struct gspca_dev *gspca_dev) |
416 | { | |
417 | struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; | |
418 | ||
419 | gspca_dev->vdev.ctrl_handler = hdl; | |
420 | v4l2_ctrl_handler_init(hdl, 5); | |
421 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
422 | V4L2_CID_BRIGHTNESS, 0, 9, 1, 4); | |
423 | /* Needs to be verified */ | |
424 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
425 | V4L2_CID_CONTRAST, 0, 9, 1, 4); | |
426 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
427 | V4L2_CID_SATURATION, 0, 9, 1, 4); | |
428 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
429 | V4L2_CID_WHITE_BALANCE_TEMPERATURE, | |
430 | 0, 33, 1, 25); | |
431 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
432 | V4L2_CID_SHARPNESS, 0, 9, 1, 4); | |
433 | ||
434 | if (hdl->error) { | |
435 | pr_err("Could not initialize controls\n"); | |
436 | return hdl->error; | |
437 | } | |
b517af72 HG |
438 | return 0; |
439 | } | |
440 | ||
441 | /* sub-driver description */ | |
442 | static const struct sd_desc sd_desc = { | |
443 | .name = MODULE_NAME, | |
b517af72 HG |
444 | .config = sd_config, |
445 | .init = sd_init, | |
1bdee422 | 446 | .init_controls = sd_init_controls, |
b517af72 HG |
447 | .start = sd_start, |
448 | .stopN = sd_stopN, | |
9bc04463 | 449 | #if IS_ENABLED(CONFIG_INPUT) |
b517af72 HG |
450 | .other_input = 1, |
451 | #endif | |
452 | }; | |
453 | ||
454 | /* -- module initialisation -- */ | |
95c967c1 | 455 | static const struct usb_device_id device_table[] = { |
b517af72 HG |
456 | {USB_DEVICE(0x04c8, 0x0720)}, /* Intel YC 76 */ |
457 | {} | |
458 | }; | |
459 | MODULE_DEVICE_TABLE(usb, device_table); | |
460 | ||
461 | /* -- device connect -- */ | |
462 | static int sd_probe(struct usb_interface *intf, | |
463 | const struct usb_device_id *id) | |
464 | { | |
465 | return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), | |
466 | THIS_MODULE); | |
467 | } | |
468 | ||
469 | static struct usb_driver sd_driver = { | |
470 | .name = MODULE_NAME, | |
471 | .id_table = device_table, | |
472 | .probe = sd_probe, | |
473 | .disconnect = gspca_disconnect, | |
474 | #ifdef CONFIG_PM | |
475 | .suspend = gspca_suspend, | |
476 | .resume = gspca_resume, | |
8bb58964 | 477 | .reset_resume = gspca_resume, |
b517af72 HG |
478 | #endif |
479 | }; | |
480 | ||
ecb3b2b3 | 481 | module_usb_driver(sd_driver); |