+++ /dev/null
-/*
- * STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
- *
- * Thanks to STMicroelectronics for information on the usb commands, and
- * to Steve Miller at STM for his help and encouragement while I was
- * writing this driver.
- *
- * This driver is based heavily on the
- * Endpoints (formerly known as AOX) se401 USB Camera Driver
- * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org)
- *
- * Still somewhat based on the Linux ov511 driver.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * History:
- * ver 0.1 October, 2001. Initial attempt.
- *
- * ver 0.2 November, 2001. Fixed asbility to resize, added brightness
- * function, made more stable (?)
- *
- * ver 0.21 Nov, 2001. Added gamma correction and white balance,
- * due to Alexander Schwartz. Still trying to
- * improve stablility. Moved stuff into stv680.h
- *
- * ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet,
- * mike@easysw.com) from GIMP, also used in pencam.
- * Simple, fast, good integer math routine.
- *
- * ver 0.23 Dec, 2001 (gkh)
- * Took out sharpen function, ran code through
- * Lindent, and did other minor tweaks to get
- * things to work properly with 2.5.1
- *
- * ver 0.24 Jan, 2002 (kjs)
- * Fixed the problem with webcam crashing after
- * two pictures. Changed the way pic is halved to
- * improve quality. Got rid of green line around
- * frame. Fix brightness reset when changing size
- * bug. Adjusted gamma filters slightly.
- *
- * ver 0.25 Jan, 2002 (kjs)
- * Fixed a bug in which the driver sometimes attempted
- * to set to a non-supported size. This allowed
- * gnomemeeting to work.
- * Fixed proc entry removal bug.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/pagemap.h>
-#include <linux/errno.h>
-#include <linux/videodev.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <linux/usb.h>
-#include <linux/mutex.h>
-
-#include "stv680.h"
-
-static int video_nr = -1;
-
-static int swapRGB; /* 0 = default for auto select */
-
-/* 0 = default to allow auto select; -1 = swap never, +1 = swap always */
-static int swapRGB_on;
-
-static unsigned int debug;
-
-#define PDEBUG(level, fmt, args...) \
- do { \
- if (debug >= level) \
- printk(KERN_INFO KBUILD_MODNAME " [%s:%d] \n" fmt, \
- __func__, __LINE__ , ## args); \
- } while (0)
-
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v0.25"
-#define DRIVER_AUTHOR "Kevin Sisson <kjsisson@bellsouth.net>"
-#define DRIVER_DESC "STV0680 USB Camera Driver"
-
-MODULE_AUTHOR (DRIVER_AUTHOR);
-MODULE_DESCRIPTION (DRIVER_DESC);
-MODULE_LICENSE ("GPL");
-module_param(debug, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC (debug, "Debug enabled or not");
-module_param(swapRGB_on, int, 0);
-MODULE_PARM_DESC (swapRGB_on, "Red/blue swap: 1=always, 0=auto, -1=never");
-module_param(video_nr, int, 0);
-
-/********************************************************************
- *
- * Memory management
- *
- * This is a shameless copy from the USB-cpia driver (linux kernel
- * version 2.3.29 or so, I have no idea what this code actually does ;).
- * Actually it seems to be a copy of a shameless copy of the bttv-driver.
- * Or that is a copy of a shameless copy of ... (To the powers: is there
- * no generic kernel-function to do this sort of stuff?)
- *
- * Yes, it was a shameless copy from the bttv-driver. IIRC, Alan says
- * there will be one, but apparentely not yet -jerdfelt
- *
- * So I copied it again for the ov511 driver -claudio
- *
- * Same for the se401 driver -Jeroen
- *
- * And the STV0680 driver - Kevin
- ********************************************************************/
-static void *rvmalloc (unsigned long size)
-{
- void *mem;
- unsigned long adr;
-
- size = PAGE_ALIGN(size);
- mem = vmalloc_32 (size);
- if (!mem)
- return NULL;
-
- memset (mem, 0, size); /* Clear the ram out, no junk to the user */
- adr = (unsigned long) mem;
- while (size > 0) {
- SetPageReserved(vmalloc_to_page((void *)adr));
- adr += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
- return mem;
-}
-
-static void rvfree (void *mem, unsigned long size)
-{
- unsigned long adr;
-
- if (!mem)
- return;
-
- adr = (unsigned long) mem;
- while ((long) size > 0) {
- ClearPageReserved(vmalloc_to_page((void *)adr));
- adr += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
- vfree (mem);
-}
-
-
-/*********************************************************************
- * pencam read/write functions
- ********************************************************************/
-
-static int stv_sndctrl (int set, struct usb_stv *stv680, unsigned short req, unsigned short value, unsigned char *buffer, int size)
-{
- int ret = -1;
-
- switch (set) {
- case 0: /* 0xc1 */
- ret = usb_control_msg (stv680->udev,
- usb_rcvctrlpipe (stv680->udev, 0),
- req,
- (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT),
- value, 0, buffer, size, PENCAM_TIMEOUT);
- break;
-
- case 1: /* 0x41 */
- ret = usb_control_msg (stv680->udev,
- usb_sndctrlpipe (stv680->udev, 0),
- req,
- (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT),
- value, 0, buffer, size, PENCAM_TIMEOUT);
- break;
-
- case 2: /* 0x80 */
- ret = usb_control_msg (stv680->udev,
- usb_rcvctrlpipe (stv680->udev, 0),
- req,
- (USB_DIR_IN | USB_RECIP_DEVICE),
- value, 0, buffer, size, PENCAM_TIMEOUT);
- break;
-
- case 3: /* 0x40 */
- ret = usb_control_msg (stv680->udev,
- usb_sndctrlpipe (stv680->udev, 0),
- req,
- (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE),
- value, 0, buffer, size, PENCAM_TIMEOUT);
- break;
-
- }
- if ((ret < 0) && (req != 0x0a)) {
- PDEBUG (1, "STV(e): usb_control_msg error %i, request = 0x%x, error = %i", set, req, ret);
- }
- return ret;
-}
-
-static int stv_set_config (struct usb_stv *dev, int configuration, int interface, int alternate)
-{
-
- if (configuration != dev->udev->actconfig->desc.bConfigurationValue
- || usb_reset_configuration (dev->udev) < 0) {
- PDEBUG (1, "STV(e): FAILED to reset configuration %i", configuration);
- return -1;
- }
- if (usb_set_interface (dev->udev, interface, alternate) < 0) {
- PDEBUG (1, "STV(e): FAILED to set alternate interface %i", alternate);
- return -1;
- }
- return 0;
-}
-
-static int stv_stop_video (struct usb_stv *dev)
-{
- int i;
- unsigned char *buf;
-
- buf = kmalloc (40, GFP_KERNEL);
- if (buf == NULL) {
- PDEBUG (0, "STV(e): Out of (small buf) memory");
- return -1;
- }
-
- /* this is a high priority command; it stops all lower order commands */
- if ((i = stv_sndctrl (1, dev, 0x04, 0x0000, buf, 0x0)) < 0) {
- i = stv_sndctrl (0, dev, 0x80, 0, buf, 0x02); /* Get Last Error; 2 = busy */
- PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buf[0], buf[1]);
- } else {
- PDEBUG (1, "STV(i): Camera reset to idle mode.");
- }
-
- if ((i = stv_set_config (dev, 1, 0, 0)) < 0)
- PDEBUG (1, "STV(e): Reset config during exit failed");
-
- /* get current mode */
- buf[0] = 0xf0;
- if ((i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08)) != 0x08) /* get mode */
- PDEBUG (0, "STV(e): Stop_video: problem setting original mode");
- if (dev->origMode != buf[0]) {
- memset (buf, 0, 8);
- buf[0] = (unsigned char) dev->origMode;
- if ((i = stv_sndctrl (3, dev, 0x07, 0x0100, buf, 0x08)) != 0x08) {
- PDEBUG (0, "STV(e): Stop_video: Set_Camera_Mode failed");
- i = -1;
- }
- buf[0] = 0xf0;
- i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08);
- if ((i != 0x08) || (buf[0] != dev->origMode)) {
- PDEBUG (0, "STV(e): camera NOT set to original resolution.");
- i = -1;
- } else
- PDEBUG (0, "STV(i): Camera set to original resolution");
- }
- /* origMode */
- kfree(buf);
- return i;
-}
-
-static int stv_set_video_mode (struct usb_stv *dev)
-{
- int i, stop_video = 1;
- unsigned char *buf;
-
- buf = kmalloc (40, GFP_KERNEL);
- if (buf == NULL) {
- PDEBUG (0, "STV(e): Out of (small buf) memory");
- return -1;
- }
-
- if ((i = stv_set_config (dev, 1, 0, 0)) < 0) {
- kfree(buf);
- return i;
- }
-
- i = stv_sndctrl (2, dev, 0x06, 0x0100, buf, 0x12);
- if (!(i > 0) && (buf[8] == 0x53) && (buf[9] == 0x05)) {
- PDEBUG (1, "STV(e): Could not get descriptor 0100.");
- goto error;
- }
-
- /* set alternate interface 1 */
- if ((i = stv_set_config (dev, 1, 0, 1)) < 0)
- goto error;
-
- if ((i = stv_sndctrl (0, dev, 0x85, 0, buf, 0x10)) != 0x10)
- goto error;
- PDEBUG (1, "STV(i): Setting video mode.");
- /* Switch to Video mode: 0x0100 = VGA (640x480), 0x0000 = CIF (352x288) 0x0300 = QVGA (320x240) */
- if ((i = stv_sndctrl (1, dev, 0x09, dev->VideoMode, buf, 0x0)) < 0) {
- stop_video = 0;
- goto error;
- }
- goto exit;
-
-error:
- kfree(buf);
- if (stop_video == 1)
- stv_stop_video (dev);
- return -1;
-
-exit:
- kfree(buf);
- return 0;
-}
-
-static int stv_init (struct usb_stv *stv680)
-{
- int i = 0;
- unsigned char *buffer;
- unsigned long int bufsize;
-
- buffer = kzalloc (40, GFP_KERNEL);
- if (buffer == NULL) {
- PDEBUG (0, "STV(e): Out of (small buf) memory");
- return -1;
- }
- udelay (100);
-
- /* set config 1, interface 0, alternate 0 */
- if ((i = stv_set_config (stv680, 1, 0, 0)) < 0) {
- kfree(buffer);
- PDEBUG (0, "STV(e): set config 1,0,0 failed");
- return -1;
- }
- /* ping camera to be sure STV0680 is present */
- if ((i = stv_sndctrl (0, stv680, 0x88, 0x5678, buffer, 0x02)) != 0x02)
- goto error;
- if ((buffer[0] != 0x56) || (buffer[1] != 0x78)) {
- PDEBUG (1, "STV(e): camera ping failed!!");
- goto error;
- }
-
- /* get camera descriptor */
- if ((i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x09)) != 0x09)
- goto error;
- i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x22);
- if (!(i >= 0) && (buffer[7] == 0xa0) && (buffer[8] == 0x23)) {
- PDEBUG (1, "STV(e): Could not get descriptor 0200.");
- goto error;
- }
- if ((i = stv_sndctrl (0, stv680, 0x8a, 0, buffer, 0x02)) != 0x02)
- goto error;
- if ((i = stv_sndctrl (0, stv680, 0x8b, 0, buffer, 0x24)) != 0x24)
- goto error;
- if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10)
- goto error;
-
- stv680->SupportedModes = buffer[7];
- i = stv680->SupportedModes;
- stv680->CIF = 0;
- stv680->VGA = 0;
- stv680->QVGA = 0;
- if (i & 1)
- stv680->CIF = 1;
- if (i & 2)
- stv680->VGA = 1;
- if (i & 8)
- stv680->QVGA = 1;
- if (stv680->SupportedModes == 0) {
- PDEBUG (0, "STV(e): There are NO supported STV680 modes!!");
- i = -1;
- goto error;
- } else {
- if (stv680->CIF)
- PDEBUG (0, "STV(i): CIF is supported");
- if (stv680->QVGA)
- PDEBUG (0, "STV(i): QVGA is supported");
- }
- /* FW rev, ASIC rev, sensor ID */
- PDEBUG (1, "STV(i): Firmware rev is %i.%i", buffer[0], buffer[1]);
- PDEBUG (1, "STV(i): ASIC rev is %i.%i", buffer[2], buffer[3]);
- PDEBUG (1, "STV(i): Sensor ID is %i", (buffer[4]*16) + (buffer[5]>>4));
-
- /* set alternate interface 1 */
- if ((i = stv_set_config (stv680, 1, 0, 1)) < 0)
- goto error;
-
- if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10)
- goto error;
- if ((i = stv_sndctrl (0, stv680, 0x8d, 0, buffer, 0x08)) != 0x08)
- goto error;
- i = buffer[3];
- PDEBUG (0, "STV(i): Camera has %i pictures.", i);
-
- /* get current mode */
- if ((i = stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08)) != 0x08)
- goto error;
- stv680->origMode = buffer[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
-
- /* This will attemp CIF mode, if supported. If not, set to QVGA */
- memset (buffer, 0, 8);
- if (stv680->CIF)
- buffer[0] = 0x00;
- else if (stv680->QVGA)
- buffer[0] = 0x03;
- if ((i = stv_sndctrl (3, stv680, 0x07, 0x0100, buffer, 0x08)) != 0x08) {
- PDEBUG (0, "STV(i): Set_Camera_Mode failed");
- i = -1;
- goto error;
- }
- buffer[0] = 0xf0;
- stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08);
- if (((stv680->CIF == 1) && (buffer[0] != 0x00)) || ((stv680->QVGA == 1) && (buffer[0] != 0x03))) {
- PDEBUG (0, "STV(e): Error setting camera video mode!");
- i = -1;
- goto error;
- } else {
- if (buffer[0] == 0) {
- stv680->VideoMode = 0x0000;
- PDEBUG (0, "STV(i): Video Mode set to CIF");
- }
- if (buffer[0] == 0x03) {
- stv680->VideoMode = 0x0300;
- PDEBUG (0, "STV(i): Video Mode set to QVGA");
- }
- }
- if ((i = stv_sndctrl (0, stv680, 0x8f, 0, buffer, 0x10)) != 0x10)
- goto error;
- bufsize = (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | (buffer[3]);
- stv680->cwidth = (buffer[4] << 8) | (buffer[5]); /* ->camera = 322, 356, 644 */
- stv680->cheight = (buffer[6] << 8) | (buffer[7]); /* ->camera = 242, 292, 484 */
- stv680->origGain = buffer[12];
-
- goto exit;
-
-error:
- i = stv_sndctrl (0, stv680, 0x80, 0, buffer, 0x02); /* Get Last Error */
- PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buffer[0], buffer[1]);
- kfree(buffer);
- return -1;
-
-exit:
- kfree(buffer);
-
- /* video = 320x240, 352x288 */
- if (stv680->CIF == 1) {
- stv680->maxwidth = 352;
- stv680->maxheight = 288;
- stv680->vwidth = 352;
- stv680->vheight = 288;
- }
- if (stv680->QVGA == 1) {
- stv680->maxwidth = 320;
- stv680->maxheight = 240;
- stv680->vwidth = 320;
- stv680->vheight = 240;
- }
-
- stv680->rawbufsize = bufsize; /* must be ./. by 8 */
- stv680->maxframesize = bufsize * 3; /* RGB size */
- PDEBUG (2, "STV(i): cwidth = %i, cheight = %i", stv680->cwidth, stv680->cheight);
- PDEBUG (1, "STV(i): width = %i, height = %i, rawbufsize = %li", stv680->vwidth, stv680->vheight, stv680->rawbufsize);
-
- /* some default values */
- stv680->bulk_in_endpointAddr = 0x82;
- stv680->dropped = 0;
- stv680->error = 0;
- stv680->framecount = 0;
- stv680->readcount = 0;
- stv680->streaming = 0;
- /* bright, white, colour, hue, contrast are set by software, not in stv0680 */
- stv680->brightness = 32767;
- stv680->chgbright = 0;
- stv680->whiteness = 0; /* only for greyscale */
- stv680->colour = 32767;
- stv680->contrast = 32767;
- stv680->hue = 32767;
- stv680->palette = STV_VIDEO_PALETTE;
- stv680->depth = 24; /* rgb24 bits */
- if ((swapRGB_on == 0) && (swapRGB == 0))
- PDEBUG (1, "STV(i): swapRGB is (auto) OFF");
- else if ((swapRGB_on == 0) && (swapRGB == 1))
- PDEBUG (1, "STV(i): swapRGB is (auto) ON");
- else if (swapRGB_on == 1)
- PDEBUG (1, "STV(i): swapRGB is (forced) ON");
- else if (swapRGB_on == -1)
- PDEBUG (1, "STV(i): swapRGB is (forced) OFF");
-
- if (stv_set_video_mode (stv680) < 0) {
- PDEBUG (0, "STV(e): Could not set video mode in stv_init");
- return -1;
- }
-
- return 0;
-}
-
-/***************** last of pencam routines *******************/
-
-/****************************************************************************
- * sysfs
- ***************************************************************************/
-#define stv680_file(name, variable, field) \
-static ssize_t show_##name(struct device *class_dev, \
- struct device_attribute *attr, char *buf) \
-{ \
- struct video_device *vdev = to_video_device(class_dev); \
- struct usb_stv *stv = video_get_drvdata(vdev); \
- return sprintf(buf, field, stv->variable); \
-} \
-static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
-
-stv680_file(model, camera_name, "%s\n");
-stv680_file(in_use, user, "%d\n");
-stv680_file(streaming, streaming, "%d\n");
-stv680_file(palette, palette, "%i\n");
-stv680_file(frames_total, readcount, "%d\n");
-stv680_file(frames_read, framecount, "%d\n");
-stv680_file(packets_dropped, dropped, "%d\n");
-stv680_file(decoding_errors, error, "%d\n");
-
-static int stv680_create_sysfs_files(struct video_device *vdev)
-{
- int rc;
-
- rc = device_create_file(&vdev->dev, &dev_attr_model);
- if (rc) goto err;
- rc = device_create_file(&vdev->dev, &dev_attr_in_use);
- if (rc) goto err_model;
- rc = device_create_file(&vdev->dev, &dev_attr_streaming);
- if (rc) goto err_inuse;
- rc = device_create_file(&vdev->dev, &dev_attr_palette);
- if (rc) goto err_stream;
- rc = device_create_file(&vdev->dev, &dev_attr_frames_total);
- if (rc) goto err_pal;
- rc = device_create_file(&vdev->dev, &dev_attr_frames_read);
- if (rc) goto err_framtot;
- rc = device_create_file(&vdev->dev, &dev_attr_packets_dropped);
- if (rc) goto err_framread;
- rc = device_create_file(&vdev->dev, &dev_attr_decoding_errors);
- if (rc) goto err_dropped;
-
- return 0;
-
-err_dropped:
- device_remove_file(&vdev->dev, &dev_attr_packets_dropped);
-err_framread:
- device_remove_file(&vdev->dev, &dev_attr_frames_read);
-err_framtot:
- device_remove_file(&vdev->dev, &dev_attr_frames_total);
-err_pal:
- device_remove_file(&vdev->dev, &dev_attr_palette);
-err_stream:
- device_remove_file(&vdev->dev, &dev_attr_streaming);
-err_inuse:
- device_remove_file(&vdev->dev, &dev_attr_in_use);
-err_model:
- device_remove_file(&vdev->dev, &dev_attr_model);
-err:
- PDEBUG(0, "STV(e): Could not create sysfs files");
- return rc;
-}
-
-static void stv680_remove_sysfs_files(struct video_device *vdev)
-{
- device_remove_file(&vdev->dev, &dev_attr_model);
- device_remove_file(&vdev->dev, &dev_attr_in_use);
- device_remove_file(&vdev->dev, &dev_attr_streaming);
- device_remove_file(&vdev->dev, &dev_attr_palette);
- device_remove_file(&vdev->dev, &dev_attr_frames_total);
- device_remove_file(&vdev->dev, &dev_attr_frames_read);
- device_remove_file(&vdev->dev, &dev_attr_packets_dropped);
- device_remove_file(&vdev->dev, &dev_attr_decoding_errors);
-}
-
-/********************************************************************
- * Camera control
- *******************************************************************/
-
-static int stv680_get_pict (struct usb_stv *stv680, struct video_picture *p)
-{
- /* This sets values for v4l interface. max/min = 65535/0 */
-
- p->brightness = stv680->brightness;
- p->whiteness = stv680->whiteness; /* greyscale */
- p->colour = stv680->colour;
- p->contrast = stv680->contrast;
- p->hue = stv680->hue;
- p->palette = stv680->palette;
- p->depth = stv680->depth;
- return 0;
-}
-
-static int stv680_set_pict (struct usb_stv *stv680, struct video_picture *p)
-{
- /* See above stv680_get_pict */
-
- if (p->palette != STV_VIDEO_PALETTE) {
- PDEBUG (2, "STV(e): Palette set error in _set_pic");
- return 1;
- }
-
- if (stv680->brightness != p->brightness) {
- stv680->chgbright = 1;
- stv680->brightness = p->brightness;
- }
-
- stv680->whiteness = p->whiteness; /* greyscale */
- stv680->colour = p->colour;
- stv680->contrast = p->contrast;
- stv680->hue = p->hue;
- stv680->palette = p->palette;
- stv680->depth = p->depth;
-
- return 0;
-}
-
-static void stv680_video_irq (struct urb *urb)
-{
- struct usb_stv *stv680 = urb->context;
- int length = urb->actual_length;
-
- if (length < stv680->rawbufsize)
- PDEBUG (2, "STV(i): Lost data in transfer: exp %li, got %i", stv680->rawbufsize, length);
-
- /* ohoh... */
- if (!stv680->streaming)
- return;
-
- if (!stv680->udev) {
- PDEBUG (0, "STV(e): device vapourished in video_irq");
- return;
- }
-
- /* 0 sized packets happen if we are to fast, but sometimes the camera
- keeps sending them forever...
- */
- if (length && !urb->status) {
- stv680->nullpackets = 0;
- switch (stv680->scratch[stv680->scratch_next].state) {
- case BUFFER_READY:
- case BUFFER_BUSY:
- stv680->dropped++;
- break;
-
- case BUFFER_UNUSED:
- memcpy (stv680->scratch[stv680->scratch_next].data,
- (unsigned char *) urb->transfer_buffer, length);
- stv680->scratch[stv680->scratch_next].state = BUFFER_READY;
- stv680->scratch[stv680->scratch_next].length = length;
- if (waitqueue_active (&stv680->wq)) {
- wake_up_interruptible (&stv680->wq);
- }
- stv680->scratch_overflow = 0;
- stv680->scratch_next++;
- if (stv680->scratch_next >= STV680_NUMSCRATCH)
- stv680->scratch_next = 0;
- break;
- } /* switch */
- } else {
- stv680->nullpackets++;
- if (stv680->nullpackets > STV680_MAX_NULLPACKETS) {
- if (waitqueue_active (&stv680->wq)) {
- wake_up_interruptible (&stv680->wq);
- }
- }
- } /* if - else */
-
- /* Resubmit urb for new data */
- urb->status = 0;
- urb->dev = stv680->udev;
- if (usb_submit_urb (urb, GFP_ATOMIC))
- PDEBUG (0, "STV(e): urb burned down in video irq");
- return;
-} /* _video_irq */
-
-static int stv680_start_stream (struct usb_stv *stv680)
-{
- struct urb *urb;
- int err = 0, i;
-
- stv680->streaming = 1;
-
- /* Do some memory allocation */
- for (i = 0; i < STV680_NUMFRAMES; i++) {
- stv680->frame[i].data = stv680->fbuf + i * stv680->maxframesize;
- stv680->frame[i].curpix = 0;
- }
- /* packet size = 4096 */
- for (i = 0; i < STV680_NUMSBUF; i++) {
- stv680->sbuf[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL);
- if (stv680->sbuf[i].data == NULL) {
- PDEBUG (0, "STV(e): Could not kmalloc raw data buffer %i", i);
- goto nomem_err;
- }
- }
-
- stv680->scratch_next = 0;
- stv680->scratch_use = 0;
- stv680->scratch_overflow = 0;
- for (i = 0; i < STV680_NUMSCRATCH; i++) {
- stv680->scratch[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL);
- if (stv680->scratch[i].data == NULL) {
- PDEBUG (0, "STV(e): Could not kmalloc raw scratch buffer %i", i);
- goto nomem_err;
- }
- stv680->scratch[i].state = BUFFER_UNUSED;
- }
-
- for (i = 0; i < STV680_NUMSBUF; i++) {
- urb = usb_alloc_urb (0, GFP_KERNEL);
- if (!urb)
- goto nomem_err;
-
- /* sbuf is urb->transfer_buffer, later gets memcpyed to scratch */
- usb_fill_bulk_urb (urb, stv680->udev,
- usb_rcvbulkpipe (stv680->udev, stv680->bulk_in_endpointAddr),
- stv680->sbuf[i].data, stv680->rawbufsize,
- stv680_video_irq, stv680);
- stv680->urb[i] = urb;
- err = usb_submit_urb (stv680->urb[i], GFP_KERNEL);
- if (err) {
- PDEBUG (0, "STV(e): urb burned down with err "
- "%d in start stream %d", err, i);
- goto nomem_err;
- }
- } /* i STV680_NUMSBUF */
-
- stv680->framecount = 0;
- return 0;
-
- nomem_err:
- for (i = 0; i < STV680_NUMSBUF; i++) {
- usb_kill_urb(stv680->urb[i]);
- usb_free_urb(stv680->urb[i]);
- stv680->urb[i] = NULL;
- kfree(stv680->sbuf[i].data);
- stv680->sbuf[i].data = NULL;
- }
- /* used in irq, free only as all URBs are dead */
- for (i = 0; i < STV680_NUMSCRATCH; i++) {
- kfree(stv680->scratch[i].data);
- stv680->scratch[i].data = NULL;
- }
- return -ENOMEM;
-
-}
-
-static int stv680_stop_stream (struct usb_stv *stv680)
-{
- int i;
-
- if (!stv680->streaming || !stv680->udev)
- return 1;
-
- stv680->streaming = 0;
-
- for (i = 0; i < STV680_NUMSBUF; i++)
- if (stv680->urb[i]) {
- usb_kill_urb (stv680->urb[i]);
- usb_free_urb (stv680->urb[i]);
- stv680->urb[i] = NULL;
- kfree(stv680->sbuf[i].data);
- }
- for (i = 0; i < STV680_NUMSCRATCH; i++) {
- kfree(stv680->scratch[i].data);
- stv680->scratch[i].data = NULL;
- }
-
- return 0;
-}
-
-static int stv680_set_size (struct usb_stv *stv680, int width, int height)
-{
- int wasstreaming = stv680->streaming;
-
- /* Check to see if we need to change */
- if ((stv680->vwidth == width) && (stv680->vheight == height))
- return 0;
-
- PDEBUG (1, "STV(i): size request for %i x %i", width, height);
- /* Check for a valid mode */
- if ((!width || !height) || ((width & 1) || (height & 1))) {
- PDEBUG (1, "STV(e): set_size error: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight);
- return 1;
- }
-
- if ((width < (stv680->maxwidth / 2)) || (height < (stv680->maxheight / 2))) {
- width = stv680->maxwidth / 2;
- height = stv680->maxheight / 2;
- } else if ((width >= 158) && (width <= 166) && (stv680->QVGA == 1)) {
- width = 160;
- height = 120;
- } else if ((width >= 172) && (width <= 180) && (stv680->CIF == 1)) {
- width = 176;
- height = 144;
- } else if ((width >= 318) && (width <= 350) && (stv680->QVGA == 1)) {
- width = 320;
- height = 240;
- } else if ((width >= 350) && (width <= 358) && (stv680->CIF == 1)) {
- width = 352;
- height = 288;
- } else {
- PDEBUG (1, "STV(e): request for non-supported size: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight);
- return 1;
- }
-
- /* Stop a current stream and start it again at the new size */
- if (wasstreaming)
- stv680_stop_stream (stv680);
- stv680->vwidth = width;
- stv680->vheight = height;
- PDEBUG (1, "STV(i): size set to %i x %i", stv680->vwidth, stv680->vheight);
- if (wasstreaming)
- stv680_start_stream (stv680);
-
- return 0;
-}
-
-/**********************************************************************
- * Video Decoding
- **********************************************************************/
-
-/******* routines from the pencam program; hey, they work! ********/
-
-/*
- * STV0680 Vision Camera Chipset Driver
- * Copyright (C) 2000 Adam Harrison <adam@antispin.org>
-*/
-
-#define RED 0
-#define GREEN 1
-#define BLUE 2
-#define AD(x, y, w) (((y)*(w)+(x))*3)
-
-static void bayer_unshuffle (struct usb_stv *stv680, struct stv680_scratch *buffer)
-{
- int x, y, i;
- int w = stv680->cwidth;
- int vw = stv680->cwidth, vh = stv680->cheight;
- unsigned int p = 0;
- int colour = 0, bayer = 0;
- unsigned char *raw = buffer->data;
- struct stv680_frame *frame = &stv680->frame[stv680->curframe];
- unsigned char *output = frame->data;
- unsigned char *temp = frame->data;
- int offset = buffer->offset;
-
- if (frame->curpix == 0) {
- if (frame->grabstate == FRAME_READY) {
- frame->grabstate = FRAME_GRABBING;
- }
- }
- if (offset != frame->curpix) { /* Regard frame as lost :( */
- frame->curpix = 0;
- stv680->error++;
- return;
- }
-
- if ((stv680->vwidth == 320) || (stv680->vwidth == 160)) {
- vw = 320;
- vh = 240;
- }
- if ((stv680->vwidth == 352) || (stv680->vwidth == 176)) {
- vw = 352;
- vh = 288;
- }
-
- memset (output, 0, 3 * vw * vh); /* clear output matrix. */
-
- for (y = 0; y < vh; y++) {
- for (x = 0; x < vw; x++) {
- if (x & 1)
- p = *(raw + y * w + (x >> 1));
- else
- p = *(raw + y * w + (x >> 1) + (w >> 1));
-
- if (y & 1)
- bayer = 2;
- else
- bayer = 0;
- if (x & 1)
- bayer++;
-
- switch (bayer) {
- case 0:
- case 3:
- colour = 1;
- break;
- case 1:
- colour = 0;
- break;
- case 2:
- colour = 2;
- break;
- }
- i = (y * vw + x) * 3;
- *(output + i + colour) = (unsigned char) p;
- } /* for x */
-
- } /* for y */
-
- /****** gamma correction plus hardcoded white balance */
- /* Thanks to Alexander Schwartx <alexander.schwartx@gmx.net> for this code.
- Correction values red[], green[], blue[], are generated by
- (pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255.
- White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and
- converted to unsigned char. Values are in stv680.h */
-
- for (y = 0; y < vh; y++) {
- for (x = 0; x < vw; x++) {
- i = (y * vw + x) * 3;
- *(output + i) = red[*(output + i)];
- *(output + i + 1) = green[*(output + i + 1)];
- *(output + i + 2) = blue[*(output + i + 2)];
- }
- }
-
- /****** bayer demosaic ******/
- for (y = 1; y < (vh - 1); y++) {
- for (x = 1; x < (vw - 1); x++) { /* work out pixel type */
- if (y & 1)
- bayer = 0;
- else
- bayer = 2;
- if (!(x & 1))
- bayer++;
-
- switch (bayer) {
- case 0: /* green. blue lr, red tb */
- *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y, vw) + BLUE) + (int) *(output + AD (x + 1, y, vw) + BLUE)) >> 1;
- *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x, y - 1, vw) + RED) + (int) *(output + AD (x, y + 1, vw) + RED)) >> 1;
- break;
-
- case 1: /* blue. green lrtb, red diagonals */
- *(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2;
- *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y - 1, vw) + RED) + (int) *(output + AD (x - 1, y + 1, vw) + RED) + (int) *(output + AD (x + 1, y - 1, vw) + RED) + (int) *(output + AD (x + 1, y + 1, vw) + RED)) >> 2;
- break;
-
- case 2: /* red. green lrtb, blue diagonals */
- *(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2;
- *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y - 1, vw) + BLUE) + (int) *(output + AD (x + 1, y - 1, vw) + BLUE) + (int) *(output + AD (x - 1, y + 1, vw) + BLUE) + (int) *(output + AD (x + 1, y + 1, vw) + BLUE)) >> 2;
- break;
-
- case 3: /* green. red lr, blue tb */
- *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y, vw) + RED) + (int) *(output + AD (x + 1, y, vw) + RED)) >> 1;
- *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x, y - 1, vw) + BLUE) + (int) *(output + AD (x, y + 1, vw) + BLUE)) >> 1;
- break;
- } /* switch */
- } /* for x */
- } /* for y - end demosaic */
-
- /* fix top and bottom row, left and right side */
- i = vw * 3;
- memcpy (output, (output + i), i);
- memcpy ((output + (vh * i)), (output + ((vh - 1) * i)), i);
- for (y = 0; y < vh; y++) {
- i = y * vw * 3;
- memcpy ((output + i), (output + i + 3), 3);
- memcpy ((output + i + (vw * 3)), (output + i + (vw - 1) * 3), 3);
- }
-
- /* process all raw data, then trim to size if necessary */
- if ((stv680->vwidth == 160) || (stv680->vwidth == 176)) {
- i = 0;
- for (y = 0; y < vh; y++) {
- if (!(y & 1)) {
- for (x = 0; x < vw; x++) {
- p = (y * vw + x) * 3;
- if (!(x & 1)) {
- *(output + i) = *(output + p);
- *(output + i + 1) = *(output + p + 1);
- *(output + i + 2) = *(output + p + 2);
- i += 3;
- }
- } /* for x */
- }
- } /* for y */
- }
- /* reset to proper width */
- if ((stv680->vwidth == 160)) {
- vw = 160;
- vh = 120;
- }
- if ((stv680->vwidth == 176)) {
- vw = 176;
- vh = 144;
- }
-
- /* output is RGB; some programs want BGR */
- /* swapRGB_on=0 -> program decides; swapRGB_on=1, always swap */
- /* swapRGB_on=-1, never swap */
- if (((swapRGB == 1) && (swapRGB_on != -1)) || (swapRGB_on == 1)) {
- for (y = 0; y < vh; y++) {
- for (x = 0; x < vw; x++) {
- i = (y * vw + x) * 3;
- *(temp) = *(output + i);
- *(output + i) = *(output + i + 2);
- *(output + i + 2) = *(temp);
- }
- }
- }
- /* brightness */
- if (stv680->chgbright == 1) {
- if (stv680->brightness >= 32767) {
- p = (stv680->brightness - 32767) / 256;
- for (x = 0; x < (vw * vh * 3); x++) {
- if ((*(output + x) + (unsigned char) p) > 255)
- *(output + x) = 255;
- else
- *(output + x) += (unsigned char) p;
- } /* for */
- } else {
- p = (32767 - stv680->brightness) / 256;
- for (x = 0; x < (vw * vh * 3); x++) {
- if ((unsigned char) p > *(output + x))
- *(output + x) = 0;
- else
- *(output + x) -= (unsigned char) p;
- } /* for */
- } /* else */
- }
- /* if */
- frame->curpix = 0;
- frame->curlinepix = 0;
- frame->grabstate = FRAME_DONE;
- stv680->framecount++;
- stv680->readcount++;
- if (stv680->frame[(stv680->curframe + 1) & (STV680_NUMFRAMES - 1)].grabstate == FRAME_READY) {
- stv680->curframe = (stv680->curframe + 1) & (STV680_NUMFRAMES - 1);
- }
-
-} /* bayer_unshuffle */
-
-/******* end routines from the pencam program *********/
-
-static int stv680_newframe (struct usb_stv *stv680, int framenr)
-{
- int errors = 0;
-
- while (stv680->streaming && (stv680->frame[framenr].grabstate == FRAME_READY || stv680->frame[framenr].grabstate == FRAME_GRABBING)) {
- if (!stv680->frame[framenr].curpix) {
- errors++;
- }
- wait_event_interruptible (stv680->wq, (stv680->scratch[stv680->scratch_use].state == BUFFER_READY));
-
- if (stv680->nullpackets > STV680_MAX_NULLPACKETS) {
- stv680->nullpackets = 0;
- PDEBUG (2, "STV(i): too many null length packets, restarting capture");
- stv680_stop_stream (stv680);
- stv680_start_stream (stv680);
- } else {
- if (stv680->scratch[stv680->scratch_use].state != BUFFER_READY) {
- stv680->frame[framenr].grabstate = FRAME_ERROR;
- PDEBUG (2, "STV(e): FRAME_ERROR in _newframe");
- return -EIO;
- }
- stv680->scratch[stv680->scratch_use].state = BUFFER_BUSY;
-
- bayer_unshuffle (stv680, &stv680->scratch[stv680->scratch_use]);
-
- stv680->scratch[stv680->scratch_use].state = BUFFER_UNUSED;
- stv680->scratch_use++;
- if (stv680->scratch_use >= STV680_NUMSCRATCH)
- stv680->scratch_use = 0;
- if (errors > STV680_MAX_ERRORS) {
- errors = 0;
- PDEBUG (2, "STV(i): too many errors, restarting capture");
- stv680_stop_stream (stv680);
- stv680_start_stream (stv680);
- }
- } /* else */
- } /* while */
- return 0;
-}
-
-/*********************************************************************
- * Video4Linux
- *********************************************************************/
-
-static int stv_open(struct file *file)
-{
- struct video_device *dev = video_devdata(file);
- struct usb_stv *stv680 = video_get_drvdata(dev);
- int err = 0;
-
- /* we are called with the BKL held */
- lock_kernel();
- stv680->user = 1;
- err = stv_init (stv680); /* main initialization routine for camera */
-
- if (err >= 0) {
- stv680->fbuf = rvmalloc (stv680->maxframesize * STV680_NUMFRAMES);
- if (!stv680->fbuf) {
- PDEBUG (0, "STV(e): Could not rvmalloc frame bufer");
- err = -ENOMEM;
- }
- file->private_data = dev;
- }
- if (err)
- stv680->user = 0;
- unlock_kernel();
-
- return err;
-}
-
-static int stv_close(struct file *file)
-{
- struct video_device *dev = file->private_data;
- struct usb_stv *stv680 = video_get_drvdata(dev);
- int i;
-
- for (i = 0; i < STV680_NUMFRAMES; i++)
- stv680->frame[i].grabstate = FRAME_UNUSED;
- if (stv680->streaming)
- stv680_stop_stream (stv680);
-
- if ((i = stv_stop_video (stv680)) < 0)
- PDEBUG (1, "STV(e): stop_video failed in stv_close");
-
- rvfree (stv680->fbuf, stv680->maxframesize * STV680_NUMFRAMES);
- stv680->user = 0;
-
- if (stv680->removed) {
- kfree(stv680);
- stv680 = NULL;
- PDEBUG (0, "STV(i): device unregistered");
- }
- file->private_data = NULL;
- return 0;
-}
-
-static long stv680_do_ioctl(struct file *file, unsigned int cmd, void *arg)
-{
- struct video_device *vdev = file->private_data;
- struct usb_stv *stv680 = video_get_drvdata(vdev);
-
- if (!stv680->udev)
- return -EIO;
-
- switch (cmd) {
- case VIDIOCGCAP:{
- struct video_capability *b = arg;
-
- strcpy (b->name, stv680->camera_name);
- b->type = VID_TYPE_CAPTURE;
- b->channels = 1;
- b->audios = 0;
- b->maxwidth = stv680->maxwidth;
- b->maxheight = stv680->maxheight;
- b->minwidth = stv680->maxwidth / 2;
- b->minheight = stv680->maxheight / 2;
- return 0;
- }
- case VIDIOCGCHAN:{
- struct video_channel *v = arg;
-
- if (v->channel != 0)
- return -EINVAL;
- v->flags = 0;
- v->tuners = 0;
- v->type = VIDEO_TYPE_CAMERA;
- strcpy (v->name, "STV Camera");
- return 0;
- }
- case VIDIOCSCHAN:{
- struct video_channel *v = arg;
- if (v->channel != 0)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGPICT:{
- struct video_picture *p = arg;
-
- stv680_get_pict (stv680, p);
- return 0;
- }
- case VIDIOCSPICT:{
- struct video_picture *p = arg;
-
- if (stv680_set_pict (stv680, p))
- return -EINVAL;
- return 0;
- }
- case VIDIOCSWIN:{
- struct video_window *vw = arg;
-
- if (vw->flags)
- return -EINVAL;
- if (vw->clipcount)
- return -EINVAL;
- if (vw->width != stv680->vwidth) {
- if (stv680_set_size (stv680, vw->width, vw->height)) {
- PDEBUG (2, "STV(e): failed (from user) set size in VIDIOCSWIN");
- return -EINVAL;
- }
- }
- return 0;
- }
- case VIDIOCGWIN:{
- struct video_window *vw = arg;
-
- vw->x = 0; /* FIXME */
- vw->y = 0;
- vw->chromakey = 0;
- vw->flags = 0;
- vw->clipcount = 0;
- vw->width = stv680->vwidth;
- vw->height = stv680->vheight;
- return 0;
- }
- case VIDIOCGMBUF:{
- struct video_mbuf *vm = arg;
- int i;
-
- memset (vm, 0, sizeof (*vm));
- vm->size = STV680_NUMFRAMES * stv680->maxframesize;
- vm->frames = STV680_NUMFRAMES;
- for (i = 0; i < STV680_NUMFRAMES; i++)
- vm->offsets[i] = stv680->maxframesize * i;
- return 0;
- }
- case VIDIOCMCAPTURE:{
- struct video_mmap *vm = arg;
-
- if (vm->format != STV_VIDEO_PALETTE) {
- PDEBUG (2, "STV(i): VIDIOCMCAPTURE vm.format (%i) != VIDEO_PALETTE (%i)",
- vm->format, STV_VIDEO_PALETTE);
- if ((vm->format == 3) && (swapRGB_on == 0)) {
- PDEBUG (2, "STV(i): VIDIOCMCAPTURE swapRGB is (auto) ON");
- /* this may fix those apps (e.g., xawtv) that want BGR */
- swapRGB = 1;
- }
- return -EINVAL;
- }
- if (vm->frame >= STV680_NUMFRAMES) {
- PDEBUG (2, "STV(e): VIDIOCMCAPTURE vm.frame > NUMFRAMES");
- return -EINVAL;
- }
- if ((stv680->frame[vm->frame].grabstate == FRAME_ERROR)
- || (stv680->frame[vm->frame].grabstate == FRAME_GRABBING)) {
- PDEBUG (2, "STV(e): VIDIOCMCAPTURE grabstate (%i) error",
- stv680->frame[vm->frame].grabstate);
- return -EBUSY;
- }
- /* Is this according to the v4l spec??? */
- if (stv680->vwidth != vm->width) {
- if (stv680_set_size (stv680, vm->width, vm->height)) {
- PDEBUG (2, "STV(e): VIDIOCMCAPTURE set_size failed");
- return -EINVAL;
- }
- }
- stv680->frame[vm->frame].grabstate = FRAME_READY;
-
- if (!stv680->streaming)
- stv680_start_stream (stv680);
-
- return 0;
- }
- case VIDIOCSYNC:{
- int *frame = arg;
- int ret = 0;
-
- if (*frame < 0 || *frame >= STV680_NUMFRAMES) {
- PDEBUG (2, "STV(e): Bad frame # in VIDIOCSYNC");
- return -EINVAL;
- }
- ret = stv680_newframe (stv680, *frame);
- stv680->frame[*frame].grabstate = FRAME_UNUSED;
- return ret;
- }
- case VIDIOCGFBUF:{
- struct video_buffer *vb = arg;
-
- memset (vb, 0, sizeof (*vb));
- return 0;
- }
- case VIDIOCKEY:
- return 0;
- case VIDIOCCAPTURE:
- {
- PDEBUG (2, "STV(e): VIDIOCCAPTURE failed");
- return -EINVAL;
- }
- case VIDIOCSFBUF:
- case VIDIOCGTUNER:
- case VIDIOCSTUNER:
- case VIDIOCGFREQ:
- case VIDIOCSFREQ:
- case VIDIOCGAUDIO:
- case VIDIOCSAUDIO:
- return -EINVAL;
- default:
- return -ENOIOCTLCMD;
- } /* end switch */
-
- return 0;
-}
-
-static long stv680_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- return video_usercopy(file, cmd, arg, stv680_do_ioctl);
-}
-
-static int stv680_mmap (struct file *file, struct vm_area_struct *vma)
-{
- struct video_device *dev = file->private_data;
- struct usb_stv *stv680 = video_get_drvdata(dev);
- unsigned long start = vma->vm_start;
- unsigned long size = vma->vm_end-vma->vm_start;
- unsigned long page, pos;
-
- mutex_lock(&stv680->lock);
-
- if (stv680->udev == NULL) {
- mutex_unlock(&stv680->lock);
- return -EIO;
- }
- if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1)
- & ~(PAGE_SIZE - 1))) {
- mutex_unlock(&stv680->lock);
- return -EINVAL;
- }
- pos = (unsigned long) stv680->fbuf;
- while (size > 0) {
- page = vmalloc_to_pfn((void *)pos);
- if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
- mutex_unlock(&stv680->lock);
- return -EAGAIN;
- }
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
- }
- mutex_unlock(&stv680->lock);
-
- return 0;
-}
-
-static ssize_t stv680_read (struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct video_device *dev = file->private_data;
- unsigned long int realcount = count;
- int ret = 0;
- struct usb_stv *stv680 = video_get_drvdata(dev);
- unsigned long int i;
-
- if (STV680_NUMFRAMES != 2) {
- PDEBUG (0, "STV(e): STV680_NUMFRAMES needs to be 2!");
- return -1;
- }
- if (stv680->udev == NULL)
- return -EIO;
- if (realcount > (stv680->vwidth * stv680->vheight * 3))
- realcount = stv680->vwidth * stv680->vheight * 3;
-
- /* Shouldn't happen: */
- if (stv680->frame[0].grabstate == FRAME_GRABBING) {
- PDEBUG (2, "STV(e): FRAME_GRABBING in stv680_read");
- return -EBUSY;
- }
- stv680->frame[0].grabstate = FRAME_READY;
- stv680->frame[1].grabstate = FRAME_UNUSED;
- stv680->curframe = 0;
-
- if (!stv680->streaming)
- stv680_start_stream (stv680);
-
- if (!stv680->streaming) {
- ret = stv680_newframe (stv680, 0); /* ret should = 0 */
- }
-
- ret = stv680_newframe (stv680, 0);
-
- if (!ret) {
- if ((i = copy_to_user (buf, stv680->frame[0].data, realcount)) != 0) {
- PDEBUG (2, "STV(e): copy_to_user frame 0 failed, ret count = %li", i);
- return -EFAULT;
- }
- } else {
- realcount = ret;
- }
- stv680->frame[0].grabstate = FRAME_UNUSED;
- return realcount;
-} /* stv680_read */
-
-static const struct v4l2_file_operations stv680_fops = {
- .owner = THIS_MODULE,
- .open = stv_open,
- .release = stv_close,
- .read = stv680_read,
- .mmap = stv680_mmap,
- .ioctl = stv680_ioctl,
-};
-static struct video_device stv680_template = {
- .name = "STV0680 USB camera",
- .fops = &stv680_fops,
- .release = video_device_release,
-};
-
-static int stv680_probe (struct usb_interface *intf, const struct usb_device_id *id)
-{
- struct usb_device *dev = interface_to_usbdev(intf);
- struct usb_host_interface *interface;
- struct usb_stv *stv680 = NULL;
- char *camera_name = NULL;
- int retval = 0;
-
- /* We don't handle multi-config cameras */
- if (dev->descriptor.bNumConfigurations != 1) {
- PDEBUG (0, "STV(e): Number of Configurations != 1");
- return -ENODEV;
- }
-
- interface = &intf->altsetting[0];
- /* Is it a STV680? */
- if ((le16_to_cpu(dev->descriptor.idVendor) == USB_PENCAM_VENDOR_ID) &&
- (le16_to_cpu(dev->descriptor.idProduct) == USB_PENCAM_PRODUCT_ID)) {
- camera_name = "STV0680";
- PDEBUG (0, "STV(i): STV0680 camera found.");
- } else if ((le16_to_cpu(dev->descriptor.idVendor) == USB_CREATIVEGOMINI_VENDOR_ID) &&
- (le16_to_cpu(dev->descriptor.idProduct) == USB_CREATIVEGOMINI_PRODUCT_ID)) {
- camera_name = "Creative WebCam Go Mini";
- PDEBUG (0, "STV(i): Creative WebCam Go Mini found.");
- } else {
- PDEBUG (0, "STV(e): Vendor/Product ID do not match STV0680 or Creative WebCam Go Mini values.");
- PDEBUG (0, "STV(e): Check that the STV0680 or Creative WebCam Go Mini camera is connected to the computer.");
- retval = -ENODEV;
- goto error;
- }
- /* We found one */
- if ((stv680 = kzalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
- PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct.");
- retval = -ENOMEM;
- goto error;
- }
-
- stv680->udev = dev;
- stv680->camera_name = camera_name;
-
- stv680->vdev = video_device_alloc();
- if (!stv680->vdev) {
- retval = -ENOMEM;
- goto error;
- }
- memcpy(stv680->vdev, &stv680_template, sizeof(stv680_template));
- stv680->vdev->parent = &intf->dev;
- video_set_drvdata(stv680->vdev, stv680);
-
- memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name));
- init_waitqueue_head (&stv680->wq);
- mutex_init (&stv680->lock);
- wmb ();
-
- if (video_register_device(stv680->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
- PDEBUG (0, "STV(e): video_register_device failed");
- retval = -EIO;
- goto error_vdev;
- }
- PDEBUG(0, "STV(i): registered new video device: %s",
- video_device_node_name(stv680->vdev));
-
- usb_set_intfdata (intf, stv680);
- retval = stv680_create_sysfs_files(stv680->vdev);
- if (retval)
- goto error_unreg;
- return 0;
-
-error_unreg:
- video_unregister_device(stv680->vdev);
-error_vdev:
- video_device_release(stv680->vdev);
-error:
- kfree(stv680);
- return retval;
-}
-
-static inline void usb_stv680_remove_disconnected (struct usb_stv *stv680)
-{
- int i;
-
- stv680->udev = NULL;
- stv680->frame[0].grabstate = FRAME_ERROR;
- stv680->frame[1].grabstate = FRAME_ERROR;
- stv680->streaming = 0;
-
- wake_up_interruptible (&stv680->wq);
-
- for (i = 0; i < STV680_NUMSBUF; i++)
- if (stv680->urb[i]) {
- usb_kill_urb (stv680->urb[i]);
- usb_free_urb (stv680->urb[i]);
- stv680->urb[i] = NULL;
- kfree(stv680->sbuf[i].data);
- }
- for (i = 0; i < STV680_NUMSCRATCH; i++)
- kfree(stv680->scratch[i].data);
- PDEBUG (0, "STV(i): %s disconnected", stv680->camera_name);
-
- /* Free the memory */
- kfree(stv680);
-}
-
-static void stv680_disconnect (struct usb_interface *intf)
-{
- struct usb_stv *stv680 = usb_get_intfdata (intf);
-
- usb_set_intfdata (intf, NULL);
-
- if (stv680) {
- /* We don't want people trying to open up the device */
- if (stv680->vdev) {
- stv680_remove_sysfs_files(stv680->vdev);
- video_unregister_device(stv680->vdev);
- stv680->vdev = NULL;
- }
- if (!stv680->user) {
- usb_stv680_remove_disconnected (stv680);
- } else {
- stv680->removed = 1;
- }
- }
-}
-
-static struct usb_driver stv680_driver = {
- .name = "stv680",
- .probe = stv680_probe,
- .disconnect = stv680_disconnect,
- .id_table = device_table
-};
-
-/********************************************************************
- * Module routines
- ********************************************************************/
-
-static int __init usb_stv680_init (void)
-{
- if (usb_register (&stv680_driver) < 0) {
- PDEBUG (0, "STV(e): Could not setup STV0680 driver");
- return -1;
- }
- PDEBUG (0, "STV(i): usb camera driver version %s registering", DRIVER_VERSION);
-
- printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
- DRIVER_DESC "\n");
- return 0;
-}
-
-static void __exit usb_stv680_exit (void)
-{
- usb_deregister (&stv680_driver);
- PDEBUG (0, "STV(i): driver deregistered");
-}
-
-module_init (usb_stv680_init);
-module_exit (usb_stv680_exit);
+++ /dev/null
-/****************************************************************************
- *
- * Filename: stv680.h
- *
- * Description:
- * This is a USB driver for STV0680 based usb video cameras.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- ****************************************************************************/
-
-/* size of usb transfers */
-#define STV680_PACKETSIZE 4096
-
-/* number of queued bulk transfers to use, may have problems if > 1 */
-#define STV680_NUMSBUF 1
-
-/* number of frames supported by the v4l part */
-#define STV680_NUMFRAMES 2
-
-/* scratch buffers for passing data to the decoders: 2 or 4 are good */
-#define STV680_NUMSCRATCH 2
-
-/* number of nul sized packets to receive before kicking the camera */
-#define STV680_MAX_NULLPACKETS 200
-
-/* number of decoding errors before kicking the camera */
-#define STV680_MAX_ERRORS 100
-
-#define USB_PENCAM_VENDOR_ID 0x0553
-#define USB_PENCAM_PRODUCT_ID 0x0202
-
-#define USB_CREATIVEGOMINI_VENDOR_ID 0x041e
-#define USB_CREATIVEGOMINI_PRODUCT_ID 0x4007
-
-#define PENCAM_TIMEOUT 1000
-/* fmt 4 */
-#define STV_VIDEO_PALETTE VIDEO_PALETTE_RGB24
-
-static struct usb_device_id device_table[] = {
- {USB_DEVICE (USB_PENCAM_VENDOR_ID, USB_PENCAM_PRODUCT_ID)},
- {USB_DEVICE (USB_CREATIVEGOMINI_VENDOR_ID, USB_CREATIVEGOMINI_PRODUCT_ID)},
- {}
-};
-MODULE_DEVICE_TABLE (usb, device_table);
-
-struct stv680_sbuf {
- unsigned char *data;
-};
-
-enum {
- FRAME_UNUSED, /* Unused (no MCAPTURE) */
- FRAME_READY, /* Ready to start grabbing */
- FRAME_GRABBING, /* In the process of being grabbed into */
- FRAME_DONE, /* Finished grabbing, but not been synced yet */
- FRAME_ERROR, /* Something bad happened while processing */
-};
-
-enum {
- BUFFER_UNUSED,
- BUFFER_READY,
- BUFFER_BUSY,
- BUFFER_DONE,
-};
-
-/* raw camera data <- sbuf (urb transfer buf) */
-struct stv680_scratch {
- unsigned char *data;
- volatile int state;
- int offset;
- int length;
-};
-
-/* processed data for display ends up here, after bayer */
-struct stv680_frame {
- unsigned char *data; /* Frame buffer */
- volatile int grabstate; /* State of grabbing */
- unsigned char *curline;
- int curlinepix;
- int curpix;
-};
-
-/* this is almost the video structure uvd_t, with extra parameters for stv */
-struct usb_stv {
- struct video_device *vdev;
-
- struct usb_device *udev;
-
- unsigned char bulk_in_endpointAddr; /* __u8 the address of the bulk in endpoint */
- char *camera_name;
-
- unsigned int VideoMode; /* 0x0100 = VGA, 0x0000 = CIF, 0x0300 = QVGA */
- int SupportedModes;
- int CIF;
- int VGA;
- int QVGA;
- int cwidth; /* camera width */
- int cheight; /* camera height */
- int maxwidth; /* max video width */
- int maxheight; /* max video height */
- int vwidth; /* current width for video window */
- int vheight; /* current height for video window */
- unsigned long int rawbufsize;
- unsigned long int maxframesize; /* rawbufsize * 3 for RGB */
-
- int origGain;
- int origMode; /* original camera mode */
-
- struct mutex lock; /* to lock the structure */
- int user; /* user count for exclusive use */
- int removed; /* device disconnected */
- int streaming; /* Are we streaming video? */
- char *fbuf; /* Videodev buffer area */
- struct urb *urb[STV680_NUMSBUF]; /* # of queued bulk transfers */
- int curframe; /* Current receiving frame */
- struct stv680_frame frame[STV680_NUMFRAMES]; /* # frames supported by v4l part */
- int readcount;
- int framecount;
- int error;
- int dropped;
- int scratch_next;
- int scratch_use;
- int scratch_overflow;
- struct stv680_scratch scratch[STV680_NUMSCRATCH]; /* for decoders */
- struct stv680_sbuf sbuf[STV680_NUMSBUF];
-
- unsigned int brightness;
- unsigned int chgbright;
- unsigned int whiteness;
- unsigned int colour;
- unsigned int contrast;
- unsigned int hue;
- unsigned int palette;
- unsigned int depth; /* rgb24 in bits */
-
- wait_queue_head_t wq; /* Processes waiting */
-
- int nullpackets;
-};
-
-
-static const unsigned char red[256] = {
- 0, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
- 18, 18, 18, 18, 18, 18, 18, 25, 30, 35, 38, 42,
- 44, 47, 50, 53, 54, 57, 59, 61, 63, 65, 67, 69,
- 71, 71, 73, 75, 77, 78, 80, 81, 82, 84, 85, 87,
- 88, 89, 90, 91, 93, 94, 95, 97, 98, 98, 99, 101,
- 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
- 114, 115, 116, 116, 117, 118, 119, 120, 121, 122, 123, 124,
- 125, 125, 126, 127, 128, 129, 129, 130, 131, 132, 133, 134,
- 134, 135, 135, 136, 137, 138, 139, 140, 140, 141, 142, 143,
- 143, 143, 144, 145, 146, 147, 147, 148, 149, 150, 150, 151,
- 152, 152, 152, 153, 154, 154, 155, 156, 157, 157, 158, 159,
- 159, 160, 161, 161, 161, 162, 163, 163, 164, 165, 165, 166,
- 167, 167, 168, 168, 169, 170, 170, 170, 171, 171, 172, 173,
- 173, 174, 174, 175, 176, 176, 177, 178, 178, 179, 179, 179,
- 180, 180, 181, 181, 182, 183, 183, 184, 184, 185, 185, 186,
- 187, 187, 188, 188, 188, 188, 189, 190, 190, 191, 191, 192,
- 192, 193, 193, 194, 195, 195, 196, 196, 197, 197, 197, 197,
- 198, 198, 199, 199, 200, 201, 201, 202, 202, 203, 203, 204,
- 204, 205, 205, 206, 206, 206, 206, 207, 207, 208, 208, 209,
- 209, 210, 210, 211, 211, 212, 212, 213, 213, 214, 214, 215,
- 215, 215, 215, 216, 216, 217, 217, 218, 218, 218, 219, 219,
- 220, 220, 221, 221
-};
-
-static const unsigned char green[256] = {
- 0, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
- 21, 21, 21, 21, 21, 21, 21, 28, 34, 39, 43, 47,
- 50, 53, 56, 59, 61, 64, 66, 68, 71, 73, 75, 77,
- 79, 80, 82, 84, 86, 87, 89, 91, 92, 94, 95, 97,
- 98, 100, 101, 102, 104, 105, 106, 108, 109, 110, 111, 113,
- 114, 115, 116, 117, 118, 120, 121, 122, 123, 124, 125, 126,
- 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138,
- 139, 140, 141, 142, 143, 144, 144, 145, 146, 147, 148, 149,
- 150, 151, 151, 152, 153, 154, 155, 156, 156, 157, 158, 159,
- 160, 160, 161, 162, 163, 164, 164, 165, 166, 167, 167, 168,
- 169, 170, 170, 171, 172, 172, 173, 174, 175, 175, 176, 177,
- 177, 178, 179, 179, 180, 181, 182, 182, 183, 184, 184, 185,
- 186, 186, 187, 187, 188, 189, 189, 190, 191, 191, 192, 193,
- 193, 194, 194, 195, 196, 196, 197, 198, 198, 199, 199, 200,
- 201, 201, 202, 202, 203, 204, 204, 205, 205, 206, 206, 207,
- 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214,
- 214, 215, 215, 216, 217, 217, 218, 218, 219, 219, 220, 220,
- 221, 221, 222, 222, 223, 224, 224, 225, 225, 226, 226, 227,
- 227, 228, 228, 229, 229, 230, 230, 231, 231, 232, 232, 233,
- 233, 234, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239,
- 239, 240, 240, 241, 241, 242, 242, 243, 243, 243, 244, 244,
- 245, 245, 246, 246
-};
-
-static const unsigned char blue[256] = {
- 0, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
- 23, 23, 23, 23, 23, 23, 23, 30, 37, 42, 47, 51,
- 55, 58, 61, 64, 67, 70, 72, 74, 78, 80, 82, 84,
- 86, 88, 90, 92, 94, 95, 97, 100, 101, 103, 104, 106,
- 107, 110, 111, 112, 114, 115, 116, 118, 119, 121, 122, 124,
- 125, 126, 127, 128, 129, 132, 133, 134, 135, 136, 137, 138,
- 139, 140, 141, 143, 144, 145, 146, 147, 148, 149, 150, 151,
- 152, 154, 155, 156, 157, 158, 158, 159, 160, 161, 162, 163,
- 165, 166, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174,
- 176, 176, 177, 178, 179, 180, 180, 181, 182, 183, 183, 184,
- 185, 187, 187, 188, 189, 189, 190, 191, 192, 192, 193, 194,
- 194, 195, 196, 196, 198, 199, 200, 200, 201, 202, 202, 203,
- 204, 204, 205, 205, 206, 207, 207, 209, 210, 210, 211, 212,
- 212, 213, 213, 214, 215, 215, 216, 217, 217, 218, 218, 220,
- 221, 221, 222, 222, 223, 224, 224, 225, 225, 226, 226, 227,
- 228, 228, 229, 229, 231, 231, 232, 233, 233, 234, 234, 235,
- 235, 236, 236, 237, 238, 238, 239, 239, 240, 240, 242, 242,
- 243, 243, 244, 244, 245, 246, 246, 247, 247, 248, 248, 249,
- 249, 250, 250, 251, 251, 253, 253, 254, 254, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255
-};
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff