| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Frank Zago | 735 | 60.69% | 1 | 5.88% |
| Jean-François Moine | 398 | 32.87% | 6 | 35.29% |
| Hans Verkuil | 40 | 3.30% | 2 | 11.76% |
| Joe Perches | 21 | 1.73% | 2 | 11.76% |
| Hans de Goede | 9 | 0.74% | 3 | 17.65% |
| Bhaktipriya Shridhar | 4 | 0.33% | 1 | 5.88% |
| Greg Kroah-Hartman | 2 | 0.17% | 1 | 5.88% |
| Thomas Gleixner | 2 | 0.17% | 1 | 5.88% |
| Total | 1211 | 17 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Fujifilm Finepix subdriver * * Copyright (C) 2008 Frank Zago */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "finepix" #include "gspca.h" MODULE_AUTHOR("Frank Zago <frank@zago.net>"); MODULE_DESCRIPTION("Fujifilm FinePix USB V4L2 driver"); MODULE_LICENSE("GPL"); /* Default timeout, in ms */ #define FPIX_TIMEOUT 250 /* Maximum transfer size to use. The windows driver reads by chunks of * 0x2000 bytes, so do the same. Note: reading more seems to work * too. */ #define FPIX_MAX_TRANSFER 0x2000 /* Structure to hold all of our device specific stuff */ struct usb_fpix { struct gspca_dev gspca_dev; /* !! must be the first item */ struct work_struct work_struct; }; /* Delay after which claim the next frame. If the delay is too small, * the camera will return old frames. On the 4800Z, 20ms is bad, 25ms * will fail every 4 or 5 frames, but 30ms is perfect. On the A210, * 30ms is bad while 35ms is perfect. */ #define NEXT_FRAME_DELAY 35 /* These cameras only support 320x200. */ static const struct v4l2_pix_format fpix_mode[1] = { { 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0} }; /* send a command to the webcam */ static int command(struct gspca_dev *gspca_dev, int order) /* 0: reset, 1: frame request */ { static u8 order_values[2][12] = { {0xc6, 0, 0, 0, 0, 0, 0, 0, 0x20, 0, 0, 0}, /* reset */ {0xd3, 0, 0, 0, 0, 0, 0, 0x01, 0, 0, 0, 0}, /* fr req */ }; memcpy(gspca_dev->usb_buf, order_values[order], 12); return usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), USB_REQ_GET_STATUS, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, 0, gspca_dev->usb_buf, 12, FPIX_TIMEOUT); } /* * This function is called as a workqueue function and runs whenever the camera * is streaming data. Because it is a workqueue function it is allowed to sleep * so we can use synchronous USB calls. To avoid possible collisions with other * threads attempting to use gspca_dev->usb_buf we take the usb_lock when * performing USB operations using it. In practice we don't really need this * as the camera doesn't provide any controls. */ static void dostream(struct work_struct *work) { struct usb_fpix *dev = container_of(work, struct usb_fpix, work_struct); struct gspca_dev *gspca_dev = &dev->gspca_dev; struct urb *urb = gspca_dev->urb[0]; u8 *data = urb->transfer_buffer; int ret = 0; int len; gspca_dbg(gspca_dev, D_STREAM, "dostream started\n"); /* loop reading a frame */ again: while (gspca_dev->present && gspca_dev->streaming) { #ifdef CONFIG_PM if (gspca_dev->frozen) break; #endif /* request a frame */ mutex_lock(&gspca_dev->usb_lock); ret = command(gspca_dev, 1); mutex_unlock(&gspca_dev->usb_lock); if (ret < 0) break; #ifdef CONFIG_PM if (gspca_dev->frozen) break; #endif if (!gspca_dev->present || !gspca_dev->streaming) break; /* the frame comes in parts */ for (;;) { ret = usb_bulk_msg(gspca_dev->dev, urb->pipe, data, FPIX_MAX_TRANSFER, &len, FPIX_TIMEOUT); if (ret < 0) { /* Most of the time we get a timeout * error. Just restart. */ goto again; } #ifdef CONFIG_PM if (gspca_dev->frozen) goto out; #endif if (!gspca_dev->present || !gspca_dev->streaming) goto out; if (len < FPIX_MAX_TRANSFER || (data[len - 2] == 0xff && data[len - 1] == 0xd9)) { /* If the result is less than what was asked * for, then it's the end of the * frame. Sometimes the jpeg is not complete, * but there's nothing we can do. We also end * here if the the jpeg ends right at the end * of the frame. */ gspca_frame_add(gspca_dev, LAST_PACKET, data, len); break; } /* got a partial image */ gspca_frame_add(gspca_dev, gspca_dev->last_packet_type == LAST_PACKET ? FIRST_PACKET : INTER_PACKET, data, len); } /* We must wait before trying reading the next * frame. If we don't, or if the delay is too short, * the camera will disconnect. */ msleep(NEXT_FRAME_DELAY); } out: gspca_dbg(gspca_dev, D_STREAM, "dostream stopped\n"); } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct usb_fpix *dev = (struct usb_fpix *) gspca_dev; struct cam *cam = &gspca_dev->cam; cam->cam_mode = fpix_mode; cam->nmodes = 1; cam->bulk = 1; cam->bulk_size = FPIX_MAX_TRANSFER; INIT_WORK(&dev->work_struct, dostream); return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { return 0; } /* start the camera */ static int sd_start(struct gspca_dev *gspca_dev) { struct usb_fpix *dev = (struct usb_fpix *) gspca_dev; int ret, len; /* Init the device */ ret = command(gspca_dev, 0); if (ret < 0) { pr_err("init failed %d\n", ret); return ret; } /* Read the result of the command. Ignore the result, for it * varies with the device. */ ret = usb_bulk_msg(gspca_dev->dev, gspca_dev->urb[0]->pipe, gspca_dev->urb[0]->transfer_buffer, FPIX_MAX_TRANSFER, &len, FPIX_TIMEOUT); if (ret < 0) { pr_err("usb_bulk_msg failed %d\n", ret); return ret; } /* Request a frame, but don't read it */ ret = command(gspca_dev, 1); if (ret < 0) { pr_err("frame request failed %d\n", ret); return ret; } /* Again, reset bulk in endpoint */ usb_clear_halt(gspca_dev->dev, gspca_dev->urb[0]->pipe); schedule_work(&dev->work_struct); return 0; } /* called on streamoff with alt==0 and on disconnect */ /* the usb_lock is held at entry - restore on exit */ static void sd_stop0(struct gspca_dev *gspca_dev) { struct usb_fpix *dev = (struct usb_fpix *) gspca_dev; /* wait for the work queue to terminate */ mutex_unlock(&gspca_dev->usb_lock); flush_work(&dev->work_struct); mutex_lock(&gspca_dev->usb_lock); } /* Table of supported USB devices */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x04cb, 0x0104)}, {USB_DEVICE(0x04cb, 0x0109)}, {USB_DEVICE(0x04cb, 0x010b)}, {USB_DEVICE(0x04cb, 0x010f)}, {USB_DEVICE(0x04cb, 0x0111)}, {USB_DEVICE(0x04cb, 0x0113)}, {USB_DEVICE(0x04cb, 0x0115)}, {USB_DEVICE(0x04cb, 0x0117)}, {USB_DEVICE(0x04cb, 0x0119)}, {USB_DEVICE(0x04cb, 0x011b)}, {USB_DEVICE(0x04cb, 0x011d)}, {USB_DEVICE(0x04cb, 0x0121)}, {USB_DEVICE(0x04cb, 0x0123)}, {USB_DEVICE(0x04cb, 0x0125)}, {USB_DEVICE(0x04cb, 0x0127)}, {USB_DEVICE(0x04cb, 0x0129)}, {USB_DEVICE(0x04cb, 0x012b)}, {USB_DEVICE(0x04cb, 0x012d)}, {USB_DEVICE(0x04cb, 0x012f)}, {USB_DEVICE(0x04cb, 0x0131)}, {USB_DEVICE(0x04cb, 0x013b)}, {USB_DEVICE(0x04cb, 0x013d)}, {USB_DEVICE(0x04cb, 0x013f)}, {} }; MODULE_DEVICE_TABLE(usb, device_table); /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .start = sd_start, .stop0 = sd_stop0, }; /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct usb_fpix), THIS_MODULE); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = gspca_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver);
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