stv680.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:45k
- /*
- * 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.
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/version.h>
- #include <linux/init.h>
- #include <linux/fs.h>
- #include <linux/vmalloc.h>
- #include <linux/slab.h>
- #include <linux/proc_fs.h>
- #include <linux/pagemap.h>
- #include <linux/wrapper.h>
- #include <linux/smp_lock.h>
- #include <linux/sched.h>
- #include <linux/signal.h>
- #include <linux/errno.h>
- #include <linux/videodev.h>
- #include <linux/usb.h>
- #include "stv680.h"
- static int video_nr = -1;
- static int swapRGB = 0; /* default for auto sleect */
- static int swapRGB_on = 0; /* default to allow auto select; -1=swap never, +1= swap always */
- static unsigned int debug = 0;
- #define PDEBUG(level, fmt, args...)
- do {
- if (debug >= level)
- info("[" __PRETTY_FUNCTION__ ":%d] " fmt, __LINE__ , ## args);
- } while (0)
- /*
- * Version Information
- */
- #define DRIVER_VERSION "v0.24"
- #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_PARM (debug, "i");
- MODULE_PARM_DESC (debug, "Debug enabled or not");
- MODULE_PARM (swapRGB_on, "i");
- MODULE_PARM_DESC (swapRGB_on, "Red/blue swap: 1=always, 0=auto, -1=never");
- MODULE_PARM (video_nr, "i");
- EXPORT_NO_SYMBOLS;
- /********************************************************************
- *
- * 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
- ********************************************************************/
- /* Given PGD from the address space's page table, return the kernel
- * virtual mapping of the physical memory mapped at ADR.
- */
- static inline unsigned long uvirt_to_kva (pgd_t * pgd, unsigned long adr)
- {
- unsigned long ret = 0UL;
- pmd_t *pmd;
- pte_t *ptep, pte;
- if (!pgd_none (*pgd)) {
- pmd = pmd_offset (pgd, adr);
- if (!pmd_none (*pmd)) {
- ptep = pte_offset (pmd, adr);
- pte = *ptep;
- if (pte_present (pte)) {
- ret = (unsigned long) page_address (pte_page (pte));
- ret |= (adr & (PAGE_SIZE - 1));
- }
- }
- }
- return ret;
- }
- /* Here we want the physical address of the memory. This is used when
- * initializing the contents of the area and marking the pages as reserved.
- */
- static inline unsigned long kvirt_to_pa (unsigned long adr)
- {
- unsigned long va, kva, ret;
- va = VMALLOC_VMADDR (adr);
- kva = uvirt_to_kva (pgd_offset_k (va), va);
- ret = __pa (kva);
- return ret;
- }
- static void *rvmalloc (unsigned long size)
- {
- void *mem;
- unsigned long adr, page;
- /* Round it off to PAGE_SIZE */
- size += (PAGE_SIZE - 1);
- size &= ~(PAGE_SIZE - 1);
- 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) {
- page = kvirt_to_pa (adr);
- mem_map_reserve (virt_to_page (__va (page)));
- adr += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
- }
- return mem;
- }
- static void rvfree (void *mem, unsigned long size)
- {
- unsigned long adr, page;
- if (!mem)
- return;
- size += (PAGE_SIZE - 1);
- size &= ~(PAGE_SIZE - 1);
- adr = (unsigned long) mem;
- while (size > 0) {
- page = kvirt_to_pa (adr);
- mem_map_unreserve (virt_to_page (__va (page)));
- adr += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
- }
- 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 (usb_set_configuration (dev->udev, configuration) < 0) {
- PDEBUG (1, "STV(e): FAILED to set 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 = kmalloc (40, GFP_KERNEL);
- if (buffer == NULL) {
- PDEBUG (0, "STV(e): Out of (small buf) memory");
- return -1;
- }
- memset (buffer, 0, 40);
- 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 */
- swapRGB = 0;
- if ((swapRGB_on == 0) && (swapRGB == 0))
- PDEBUG (1, "STV(i): swapRGB is (auto) OFF");
- else if ((swapRGB_on == 1) && (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 *******************/
- /********************************************************************
- * /proc interface
- *******************************************************************/
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- static struct proc_dir_entry *stv680_proc_entry = NULL;
- extern struct proc_dir_entry *video_proc_entry;
- #define YES_NO(x) ((x) ? "yes" : "no")
- #define ON_OFF(x) ((x) ? "(auto) on" : "(auto) off")
- static int stv680_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data)
- {
- char *out = page;
- int len;
- struct usb_stv *stv680 = data;
- /* Stay under PAGE_SIZE or else bla bla bla.... */
- out += sprintf (out, "driver_version : %sn", DRIVER_VERSION);
- out += sprintf (out, "model : %sn", stv680->camera_name);
- out += sprintf (out, "in use : %sn", YES_NO (stv680->user));
- out += sprintf (out, "streaming : %sn", YES_NO (stv680->streaming));
- out += sprintf (out, "num_frames : %dn", STV680_NUMFRAMES);
- out += sprintf (out, "Current size : %ix%in", stv680->vwidth, stv680->vheight);
- if (swapRGB_on == 0)
- out += sprintf (out, "swapRGB : %sn", ON_OFF (swapRGB));
- else if (swapRGB_on == 1)
- out += sprintf (out, "swapRGB : (forced) onn");
- else if (swapRGB_on == -1)
- out += sprintf (out, "swapRGB : (forced) offn");
- out += sprintf (out, "Palette : %i", stv680->palette);
- out += sprintf (out, "n");
- out += sprintf (out, "Frames total : %dn", stv680->readcount);
- out += sprintf (out, "Frames read : %dn", stv680->framecount);
- out += sprintf (out, "Packets dropped : %dn", stv680->dropped);
- out += sprintf (out, "Decoding Errors : %dn", stv680->error);
- len = out - page;
- len -= off;
- if (len < count) {
- *eof = 1;
- if (len <= 0)
- return 0;
- } else
- len = count;
- *start = page + off;
- return len;
- }
- static int create_proc_stv680_cam (struct usb_stv *stv680)
- {
- char name[9];
- struct proc_dir_entry *ent;
- if (!stv680_proc_entry || !stv680)
- return -1;
- sprintf (name, "video%d", stv680->vdev.minor);
- ent = create_proc_entry (name, S_IFREG | S_IRUGO | S_IWUSR, stv680_proc_entry);
- if (!ent)
- return -1;
- ent->data = stv680;
- ent->read_proc = stv680_read_proc;
- stv680->proc_entry = ent;
- return 0;
- }
- static void destroy_proc_stv680_cam (struct usb_stv *stv680)
- {
- /* One to much, just to be sure :) */
- char name[9];
- if (!stv680 || !stv680->proc_entry)
- return;
- sprintf (name, "video%d", stv680->vdev.minor);
- remove_proc_entry (name, stv680_proc_entry);
- stv680->proc_entry = NULL;
- }
- static int proc_stv680_create (void)
- {
- if (video_proc_entry == NULL) {
- PDEBUG (0, "STV(e): /proc/video/ doesn't exist!");
- return -1;
- }
- stv680_proc_entry = create_proc_entry ("stv680", S_IFDIR, video_proc_entry);
- if (stv680_proc_entry) {
- stv680_proc_entry->owner = THIS_MODULE;
- } else {
- PDEBUG (0, "STV(e): Unable to initialize /proc/video/stv680");
- return -1;
- }
- return 0;
- }
- static void proc_stv680_destroy (void)
- {
- if (stv680_proc_entry == NULL)
- return;
- remove_proc_entry ("stv", video_proc_entry);
- }
- #endif /* CONFIG_PROC_FS && CONFIG_VIDEO_PROC_FS */
- /********************************************************************
- * 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))
- PDEBUG (0, "STV(e): urb burned down in video irq");
- return;
- } /* _video_irq */
- static int stv680_start_stream (struct usb_stv *stv680)
- {
- urb_t *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);
- return -1;
- }
- }
- 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);
- return -1;
- }
- stv680->scratch[i].state = BUFFER_UNUSED;
- }
- for (i = 0; i < STV680_NUMSBUF; i++) {
- urb = usb_alloc_urb (0);
- if (!urb)
- return ENOMEM;
- /* 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);
- urb->timeout = PENCAM_TIMEOUT * 2;
- urb->transfer_flags |= USB_QUEUE_BULK;
- stv680->urb[i] = urb;
- err = usb_submit_urb (stv680->urb[i]);
- if (err)
- PDEBUG (0, "STV(e): urb burned down in start stream");
- } /* i STV680_NUMSBUF */
- stv680->framecount = 0;
- return 0;
- }
- 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]) {
- stv680->urb[i]->next = NULL;
- usb_unlink_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)) {
- width = 160;
- height = 120;
- } else if ((width >= 172) && (width <= 180)) {
- width = 176;
- height = 144;
- } else if ((width >= 318) && (width <= 350)) {
- width = 320;
- height = 240;
- } else if ((width >= 350) && (width <= 358)) {
- width = 352;
- height = 288;
- }
- /* 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 video_device *dev, int flags)
- {
- struct usb_stv *stv680 = (struct usb_stv *) dev;
- int err = 0;
- /* we are called with the BKL held */
- MOD_INC_USE_COUNT;
- 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;
- }
- }
- if (err) {
- MOD_DEC_USE_COUNT;
- stv680->user = 0;
- }
- return err;
- }
- static void stv_close (struct video_device *dev)
- {
- /* called with BKL held */
- struct usb_stv *stv680 = (struct usb_stv *) 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) {
- video_unregister_device (&stv680->vdev);
- kfree (stv680);
- stv680 = NULL;
- PDEBUG (0, "STV(i): device unregistered");
- }
- MOD_DEC_USE_COUNT;
- }
- static long stv680_write (struct video_device *dev, const char *buf, unsigned long count, int noblock)
- {
- return -EINVAL;
- }
- static int stv680_ioctl (struct video_device *vdev, unsigned int cmd, void *arg)
- {
- struct usb_stv *stv680 = (struct usb_stv *) vdev;
- if (!stv680->udev)
- return -EIO;
- switch (cmd) {
- case VIDIOCGCAP:{
- struct video_capability b;
- 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;
- if (copy_to_user (arg, &b, sizeof (b))) {
- PDEBUG (2, "STV(e): VIDIOCGGAP failed");
- return -EFAULT;
- }
- return 0;
- }
- case VIDIOCGCHAN:{
- struct video_channel v;
- if (copy_from_user (&v, arg, sizeof (v)))
- return -EFAULT;
- if (v.channel != 0)
- return -EINVAL;
- v.flags = 0;
- v.tuners = 0;
- v.type = VIDEO_TYPE_CAMERA;
- strcpy (v.name, "STV Camera");
- if (copy_to_user (arg, &v, sizeof (v))) {
- PDEBUG (2, "STV(e): VIDIOCGCHAN failed");
- return -EFAULT;
- }
- return 0;
- }
- case VIDIOCSCHAN:{
- int v;
- if (copy_from_user (&v, arg, sizeof (v))) {
- PDEBUG (2, "STV(e): VIDIOCSCHAN failed");
- return -EFAULT;
- }
- if (v != 0)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGPICT:{
- struct video_picture p;
- stv680_get_pict (stv680, &p);
- if (copy_to_user (arg, &p, sizeof (p))) {
- PDEBUG (2, "STV(e): VIDIOCGPICT failed");
- return -EFAULT;
- }
- return 0;
- }
- case VIDIOCSPICT:{
- struct video_picture p;
- if (copy_from_user (&p, arg, sizeof (p))) {
- PDEBUG (2, "STV(e): VIDIOCSPICT failed");
- return -EFAULT;
- }
- copy_from_user (&p, arg, sizeof (p));
- PDEBUG (2, "STV(i): palette set to %i in VIDIOSPICT", p.palette);
- if (stv680_set_pict (stv680, &p))
- return -EINVAL;
- return 0;
- }
- case VIDIOCSWIN:{
- struct video_window vw;
- if (copy_from_user (&vw, arg, sizeof (vw)))
- return -EFAULT;
- 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;
- vw.x = 0; /* FIXME */
- vw.y = 0;
- vw.chromakey = 0;
- vw.flags = 0;
- vw.clipcount = 0;
- vw.width = stv680->vwidth;
- vw.height = stv680->vheight;
- if (copy_to_user (arg, &vw, sizeof (vw))) {
- PDEBUG (2, "STV(e): VIDIOCGWIN failed");
- return -EFAULT;
- }
- return 0;
- }
- case VIDIOCGMBUF:{
- struct video_mbuf vm;
- 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;
- if (copy_to_user ((void *) arg, (void *) &vm, sizeof (vm))) {
- PDEBUG (2, "STV(e): VIDIOCGMBUF failed");
- return -EFAULT;
- }
- return 0;
- }
- case VIDIOCMCAPTURE:{
- struct video_mmap vm;
- if (copy_from_user (&vm, arg, sizeof (vm))) {
- PDEBUG (2, "STV(e): VIDIOCMCAPTURE failed");
- return -EFAULT;
- }
- 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, ret = 0;
- if (copy_from_user ((void *) &frame, arg, sizeof (int))) {
- PDEBUG (2, "STV(e): VIDIOCSYNC failed");
- return -EFAULT;
- }
- 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;
- memset (&vb, 0, sizeof (vb));
- vb.base = NULL; /* frame buffer not supported, not used */
- if (copy_to_user ((void *) arg, (void *) &vb, sizeof (vb))) {
- PDEBUG (2, "STV(e): VIDIOCSYNC failed");
- return -EFAULT;
- }
- return 0;
- }
- case VIDIOCKEY:
- return 0;
- case VIDIOCCAPTURE:
- {
- PDEBUG (2, "STV(e): VIDIOCCAPTURE failed");
- return -EINVAL;
- }
- case VIDIOCSFBUF:
- return -EINVAL;
- case VIDIOCGTUNER:
- case VIDIOCSTUNER:
- return -EINVAL;
- case VIDIOCGFREQ:
- case VIDIOCSFREQ:
- return -EINVAL;
- case VIDIOCGAUDIO:
- case VIDIOCSAUDIO:
- return -EINVAL;
- default:
- return -ENOIOCTLCMD;
- } /* end switch */
- return 0;
- }
- static int stv680_mmap (struct video_device *dev, const char *adr, unsigned long size)
- {
- struct usb_stv *stv680 = (struct usb_stv *) dev;
- unsigned long start = (unsigned long) adr;
- unsigned long page, pos;
- down (&stv680->lock);
- if (stv680->udev == NULL) {
- up (&stv680->lock);
- return -EIO;
- }
- if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1)
- & ~(PAGE_SIZE - 1))) {
- up (&stv680->lock);
- return -EINVAL;
- }
- pos = (unsigned long) stv680->fbuf;
- while (size > 0) {
- page = kvirt_to_pa (pos);
- if (remap_page_range (start, page, PAGE_SIZE, PAGE_SHARED)) {
- up (&stv680->lock);
- return -EAGAIN;
- }
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
- }
- up (&stv680->lock);
- return 0;
- }
- static long stv680_read (struct video_device *dev, char *buf, unsigned long count, int noblock)
- {
- unsigned long int realcount = count;
- int ret = 0;
- struct usb_stv *stv680 = (struct usb_stv *) 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 int stv_init_done (struct video_device *dev)
- {
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- if (create_proc_stv680_cam ((struct usb_stv *) dev) < 0)
- return -1;
- #endif
- return 0;
- }
- static struct video_device stv680_template = {
- owner: THIS_MODULE,
- name: "STV0680 USB camera",
- type: VID_TYPE_CAPTURE,
- hardware: VID_HARDWARE_SE401,
- open: stv_open,
- close: stv_close,
- read: stv680_read,
- write: stv680_write,
- ioctl: stv680_ioctl,
- mmap: stv680_mmap,
- initialize: stv_init_done,
- };
- static void *__devinit stv680_probe (struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id)
- {
- struct usb_interface_descriptor *interface;
- struct usb_stv *stv680;
- char *camera_name = NULL;
- /* We don't handle multi-config cameras */
- if (dev->descriptor.bNumConfigurations != 1) {
- PDEBUG (0, "STV(e): Number of Configurations != 1");
- return NULL;
- }
- interface = &dev->actconfig->interface[ifnum].altsetting[0];
- /* Is it a STV680? */
- if ((dev->descriptor.idVendor == USB_PENCAM_VENDOR_ID) && (dev->descriptor.idProduct == USB_PENCAM_PRODUCT_ID)) {
- camera_name = "STV0680";
- PDEBUG (0, "STV(i): STV0680 camera found.");
- } else {
- PDEBUG (0, "STV(e): Vendor/Product ID do not match STV0680 values.");
- PDEBUG (0, "STV(e): Check that the STV0680 camera is connected to the computer.");
- return NULL;
- }
- /* We found one */
- if ((stv680 = kmalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
- PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct.");
- return NULL;
- }
- memset (stv680, 0, sizeof (*stv680));
- stv680->udev = dev;
- stv680->camera_name = camera_name;
- memcpy (&stv680->vdev, &stv680_template, sizeof (stv680_template));
- memcpy (stv680->vdev.name, stv680->camera_name, strlen (stv680->camera_name));
- init_waitqueue_head (&stv680->wq);
- init_MUTEX (&stv680->lock);
- wmb ();
- if (video_register_device (&stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
- kfree (stv680);
- PDEBUG (0, "STV(e): video_register_device failed");
- return NULL;
- }
- PDEBUG (0, "STV(i): registered new video device: video%d", stv680->vdev.minor);
- return stv680;
- }
- 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]) {
- stv680->urb[i]->next = NULL;
- usb_unlink_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++)
- if (stv680->scratch[i].data) {
- kfree (stv680->scratch[i].data);
- }
- PDEBUG (0, "STV(i): %s disconnected", stv680->camera_name);
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- destroy_proc_stv680_cam (stv680);
- #endif
- /* Free the memory */
- kfree (stv680);
- }
- static void stv680_disconnect (struct usb_device *dev, void *ptr)
- {
- struct usb_stv *stv680 = (struct usb_stv *) ptr;
- lock_kernel ();
- /* We don't want people trying to open up the device */
- if (!stv680->user) {
- video_unregister_device (&stv680->vdev);
- usb_stv680_remove_disconnected (stv680);
- } else {
- stv680->removed = 1;
- }
- unlock_kernel ();
- }
- 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 defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- if (proc_stv680_create () < 0)
- return -1;
- #endif
- 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);
- info(DRIVER_DESC " " DRIVER_VERSION);
- return 0;
- }
- static void __exit usb_stv680_exit (void)
- {
- usb_deregister (&stv680_driver);
- PDEBUG (0, "STV(i): driver deregistered");
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- proc_stv680_destroy ();
- #endif
- }
- module_init (usb_stv680_init);
- module_exit (usb_stv680_exit);