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31#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32
33#define MODULE_NAME "konica"
34
35#include <linux/input.h>
36#include "gspca.h"
37
38MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
39MODULE_DESCRIPTION("Konica chipset USB Camera Driver");
40MODULE_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
49struct sd {
50 struct gspca_dev gspca_dev;
51 struct urb *last_data_urb;
52 u8 snapshot_pressed;
53};
54
55
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67
68
69
70static 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
88static void sd_isoc_irq(struct urb *urb);
89
90static 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) {
106 pr_err("reg_w err writing %02x to %02x: %d\n",
107 value, index, ret);
108 gspca_dev->usb_err = ret;
109 }
110}
111
112static 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) {
128 pr_err("reg_r err %d\n", ret);
129 gspca_dev->usb_err = ret;
130 }
131}
132
133static void konica_stream_on(struct gspca_dev *gspca_dev)
134{
135 reg_w(gspca_dev, 1, 0x0b);
136}
137
138static void konica_stream_off(struct gspca_dev *gspca_dev)
139{
140 reg_w(gspca_dev, 0, 0x0b);
141}
142
143
144static int sd_config(struct gspca_dev *gspca_dev,
145 const struct usb_device_id *id)
146{
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;
150
151 return 0;
152}
153
154
155static int sd_init(struct gspca_dev *gspca_dev)
156{
157 int i;
158
159
160
161
162
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 }
171 reg_w(gspca_dev, 0, 0x0d);
172
173 return gspca_dev->usb_err;
174}
175
176static 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) {
187 pr_err("Couldn't get altsetting\n");
188 return -EIO;
189 }
190
191 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
192
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
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);
211 if (!urb)
212 return -ENOMEM;
213 gspca_dev->urb[n] = urb;
214 urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
215 packet_size * SD_NPKT,
216 GFP_KERNEL,
217 &urb->transfer_dma);
218 if (urb->transfer_buffer == NULL) {
219 pr_err("usb_buffer_alloc failed\n");
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
242static void sd_stopN(struct gspca_dev *gspca_dev)
243{
244 struct sd *sd __maybe_unused = (struct sd *) gspca_dev;
245
246 konica_stream_off(gspca_dev);
247#if IS_ENABLED(CONFIG_INPUT)
248
249
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
259static 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;
274#ifdef CONFIG_PM
275 if (gspca_dev->frozen)
276 return;
277#endif
278 PERR("urb status: %d", urb->status);
279 st = usb_submit_urb(urb, GFP_ATOMIC);
280 if (st < 0)
281 pr_err("resubmit urb error %d\n", st);
282 return;
283 }
284
285
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) {
296 PERR("lost sync on frames");
297 goto resubmit;
298 }
299
300 if (data_urb->number_of_packets != status_urb->number_of_packets) {
301 PERR("no packets does not match, data: %d, status: %d",
302 data_urb->number_of_packets,
303 status_urb->number_of_packets);
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) {
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);
313 gspca_dev->last_packet_type = DISCARD_PACKET;
314 continue;
315 }
316
317 if (status_urb->iso_frame_desc[i].actual_length != 1) {
318 PERR("bad status packet length %d",
319 status_urb->iso_frame_desc[i].actual_length);
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
331
332
333
334
335
336
337
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 {
343#if IS_ENABLED(CONFIG_INPUT)
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
360resubmit:
361 if (data_urb) {
362 st = usb_submit_urb(data_urb, GFP_ATOMIC);
363 if (st < 0)
364 PERR("usb_submit_urb(data_urb) ret %d", st);
365 }
366 st = usb_submit_urb(status_urb, GFP_ATOMIC);
367 if (st < 0)
368 PERR("usb_submit_urb(status_urb) ret %d\n", st);
369}
370
371static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
372{
373 struct gspca_dev *gspca_dev =
374 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
375
376 gspca_dev->usb_err = 0;
377
378 if (!gspca_dev->streaming)
379 return 0;
380
381 switch (ctrl->id) {
382 case V4L2_CID_BRIGHTNESS:
383 konica_stream_off(gspca_dev);
384 reg_w(gspca_dev, ctrl->val, BRIGHTNESS_REG);
385 konica_stream_on(gspca_dev);
386 break;
387 case V4L2_CID_CONTRAST:
388 konica_stream_off(gspca_dev);
389 reg_w(gspca_dev, ctrl->val, CONTRAST_REG);
390 konica_stream_on(gspca_dev);
391 break;
392 case V4L2_CID_SATURATION:
393 konica_stream_off(gspca_dev);
394 reg_w(gspca_dev, ctrl->val, SATURATION_REG);
395 konica_stream_on(gspca_dev);
396 break;
397 case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
398 konica_stream_off(gspca_dev);
399 reg_w(gspca_dev, ctrl->val, WHITEBAL_REG);
400 konica_stream_on(gspca_dev);
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;
407 }
408 return gspca_dev->usb_err;
409}
410
411static const struct v4l2_ctrl_ops sd_ctrl_ops = {
412 .s_ctrl = sd_s_ctrl,
413};
414
415static 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
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 }
438 return 0;
439}
440
441
442static const struct sd_desc sd_desc = {
443 .name = MODULE_NAME,
444 .config = sd_config,
445 .init = sd_init,
446 .init_controls = sd_init_controls,
447 .start = sd_start,
448 .stopN = sd_stopN,
449#if IS_ENABLED(CONFIG_INPUT)
450 .other_input = 1,
451#endif
452};
453
454
455static const struct usb_device_id device_table[] = {
456 {USB_DEVICE(0x04c8, 0x0720)},
457 {}
458};
459MODULE_DEVICE_TABLE(usb, device_table);
460
461
462static 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
469static 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,
477 .reset_resume = gspca_resume,
478#endif
479};
480
481module_usb_driver(sd_driver);
482
