+++ /dev/null
-/*
- * Driver for Logitech Quickcam Messenger usb video camera
- * Copyright (C) Jaya Kumar
- *
- * This work was sponsored by CIS(M) Sdn Bhd.
- * History:
- * 05/08/2006 - Jaya Kumar
- * I wrote this based on the konicawc by Simon Evans.
- * -
- * Full credit for reverse engineering and creating an initial
- * working linux driver for the VV6422 goes to the qce-ga project by
- * Tuukka Toivonen, Jochen Hoenicke, Peter McConnell,
- * Cristiano De Michele, Georg Acher, Jean-Frederic Clere as well as
- * others.
- * ---
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/usb/input.h>
-#include <linux/slab.h>
-
-#include "usbvideo.h"
-#include "quickcam_messenger.h"
-
-/*
- * Version Information
- */
-
-#ifdef CONFIG_USB_DEBUG
-static int debug;
-#define DEBUG(n, format, arg...) \
- if (n <= debug) { \
- printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
- }
-#else
-#define DEBUG(n, arg...)
-static const int debug;
-#endif
-
-#define DRIVER_VERSION "v0.01"
-#define DRIVER_DESC "Logitech Quickcam Messenger USB"
-
-#define USB_LOGITECH_VENDOR_ID 0x046D
-#define USB_QCM_PRODUCT_ID 0x08F0
-
-#define MAX_CAMERAS 1
-
-#define MAX_COLOUR 32768
-#define MAX_HUE 32768
-#define MAX_BRIGHTNESS 32768
-#define MAX_CONTRAST 32768
-#define MAX_WHITENESS 32768
-
-static int size = SIZE_320X240;
-static int colour = MAX_COLOUR;
-static int hue = MAX_HUE;
-static int brightness = MAX_BRIGHTNESS;
-static int contrast = MAX_CONTRAST;
-static int whiteness = MAX_WHITENESS;
-
-static struct usbvideo *cams;
-
-static struct usb_device_id qcm_table [] = {
- { USB_DEVICE(USB_LOGITECH_VENDOR_ID, USB_QCM_PRODUCT_ID) },
- { }
-};
-MODULE_DEVICE_TABLE(usb, qcm_table);
-
-#ifdef CONFIG_INPUT
-static void qcm_register_input(struct qcm *cam, struct usb_device *dev)
-{
- struct input_dev *input_dev;
- int error;
-
- usb_make_path(dev, cam->input_physname, sizeof(cam->input_physname));
- strlcat(cam->input_physname, "/input0", sizeof(cam->input_physname));
-
- cam->input = input_dev = input_allocate_device();
- if (!input_dev) {
- dev_warn(&dev->dev, "insufficient mem for cam input device\n");
- return;
- }
-
- input_dev->name = "QCM button";
- input_dev->phys = cam->input_physname;
- usb_to_input_id(dev, &input_dev->id);
- input_dev->dev.parent = &dev->dev;
-
- input_dev->evbit[0] = BIT_MASK(EV_KEY);
- input_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA);
-
- error = input_register_device(cam->input);
- if (error) {
- dev_warn(&dev->dev,
- "Failed to register camera's input device, err: %d\n",
- error);
- input_free_device(cam->input);
- cam->input = NULL;
- }
-}
-
-static void qcm_unregister_input(struct qcm *cam)
-{
- if (cam->input) {
- input_unregister_device(cam->input);
- cam->input = NULL;
- }
-}
-
-static void qcm_report_buttonstat(struct qcm *cam)
-{
- if (cam->input) {
- input_report_key(cam->input, KEY_CAMERA, cam->button_sts);
- input_sync(cam->input);
- }
-}
-
-static void qcm_int_irq(struct urb *urb)
-{
- int ret;
- struct uvd *uvd = urb->context;
- struct qcm *cam;
-
- if (!CAMERA_IS_OPERATIONAL(uvd))
- return;
-
- if (!uvd->streaming)
- return;
-
- uvd->stats.urb_count++;
-
- if (urb->status < 0)
- uvd->stats.iso_err_count++;
- else {
- if (urb->actual_length > 0 ) {
- cam = (struct qcm *) uvd->user_data;
- if (cam->button_sts_buf == 0x88)
- cam->button_sts = 0x0;
- else if (cam->button_sts_buf == 0x80)
- cam->button_sts = 0x1;
- qcm_report_buttonstat(cam);
- }
- }
-
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret < 0)
- err("usb_submit_urb error (%d)", ret);
-}
-
-static int qcm_setup_input_int(struct qcm *cam, struct uvd *uvd)
-{
- int errflag;
- usb_fill_int_urb(cam->button_urb, uvd->dev,
- usb_rcvintpipe(uvd->dev, uvd->video_endp + 1),
- &cam->button_sts_buf,
- 1,
- qcm_int_irq,
- uvd, 16);
-
- errflag = usb_submit_urb(cam->button_urb, GFP_KERNEL);
- if (errflag)
- err ("usb_submit_int ret %d", errflag);
- return errflag;
-}
-
-static void qcm_stop_int_data(struct qcm *cam)
-{
- usb_kill_urb(cam->button_urb);
-}
-
-static int qcm_alloc_int_urb(struct qcm *cam)
-{
- cam->button_urb = usb_alloc_urb(0, GFP_KERNEL);
-
- if (!cam->button_urb)
- return -ENOMEM;
-
- return 0;
-}
-
-static void qcm_free_int(struct qcm *cam)
-{
- usb_free_urb(cam->button_urb);
-}
-#endif /* CONFIG_INPUT */
-
-static int qcm_stv_setb(struct usb_device *dev, u16 reg, u8 val)
-{
- int ret;
-
- /* we'll wait up to 3 slices but no more */
- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- 0x04, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
- reg, 0, &val, 1, 3*HZ);
- return ret;
-}
-
-static int qcm_stv_setw(struct usb_device *dev, u16 reg, __le16 val)
-{
- int ret;
-
- /* we'll wait up to 3 slices but no more */
- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- 0x04, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
- reg, 0, &val, 2, 3*HZ);
- return ret;
-}
-
-static int qcm_stv_getw(struct usb_device *dev, unsigned short reg,
- __le16 *val)
-{
- int ret;
-
- /* we'll wait up to 3 slices but no more */
- ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
- 0x04, USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
- reg, 0, val, 2, 3*HZ);
- return ret;
-}
-
-static int qcm_camera_on(struct uvd *uvd)
-{
- int ret;
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, STV_ISO_ENABLE, 0x01));
- return 0;
-}
-
-static int qcm_camera_off(struct uvd *uvd)
-{
- int ret;
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, STV_ISO_ENABLE, 0x00));
- return 0;
-}
-
-static void qcm_hsv2rgb(u16 hue, u16 sat, u16 val, u16 *r, u16 *g, u16 *b)
-{
- unsigned int segment, valsat;
- signed int h = (signed int) hue;
- unsigned int s = (sat - 32768) * 2; /* rescale */
- unsigned int v = val;
- unsigned int p;
-
- /*
- the registers controlling gain are 8 bit of which
- we affect only the last 4 bits with our gain.
- we know that if saturation is 0, (unsaturated) then
- we're grayscale (center axis of the colour cone) so
- we set rgb=value. we use a formula obtained from
- wikipedia to map the cone to the RGB plane. it's
- as follows for the human value case of h=0..360,
- s=0..1, v=0..1
- h_i = h/60 % 6 , f = h/60 - h_i , p = v(1-s)
- q = v(1 - f*s) , t = v(1 - (1-f)s)
- h_i==0 => r=v , g=t, b=p
- h_i==1 => r=q , g=v, b=p
- h_i==2 => r=p , g=v, b=t
- h_i==3 => r=p , g=q, b=v
- h_i==4 => r=t , g=p, b=v
- h_i==5 => r=v , g=p, b=q
- the bottom side (the point) and the stuff just up
- of that is black so we simplify those two cases.
- */
- if (sat < 32768) {
- /* anything less than this is unsaturated */
- *r = val;
- *g = val;
- *b = val;
- return;
- }
- if (val <= (0xFFFF/8)) {
- /* anything less than this is black */
- *r = 0;
- *g = 0;
- *b = 0;
- return;
- }
-
- /* the rest of this code is copying tukkat's
- implementation of the hsv2rgb conversion as taken
- from qc-usb-messenger code. the 10923 is 0xFFFF/6
- to divide the cone into 6 sectors. */
-
- segment = (h + 10923) & 0xFFFF;
- segment = segment*3 >> 16; /* 0..2: 0=R, 1=G, 2=B */
- hue -= segment * 21845; /* -10923..10923 */
- h = hue;
- h *= 3;
- valsat = v*s >> 16; /* 0..65534 */
- p = v - valsat;
- if (h >= 0) {
- unsigned int t = v - (valsat * (32769 - h) >> 15);
- switch (segment) {
- case 0: /* R-> */
- *r = v;
- *g = t;
- *b = p;
- break;
- case 1: /* G-> */
- *r = p;
- *g = v;
- *b = t;
- break;
- case 2: /* B-> */
- *r = t;
- *g = p;
- *b = v;
- break;
- }
- } else {
- unsigned int q = v - (valsat * (32769 + h) >> 15);
- switch (segment) {
- case 0: /* ->R */
- *r = v;
- *g = p;
- *b = q;
- break;
- case 1: /* ->G */
- *r = q;
- *g = v;
- *b = p;
- break;
- case 2: /* ->B */
- *r = p;
- *g = q;
- *b = v;
- break;
- }
- }
-}
-
-static int qcm_sensor_set_gains(struct uvd *uvd, u16 hue,
- u16 saturation, u16 value)
-{
- int ret;
- u16 r=0,g=0,b=0;
-
- /* this code is based on qc-usb-messenger */
- qcm_hsv2rgb(hue, saturation, value, &r, &g, &b);
-
- r >>= 12;
- g >>= 12;
- b >>= 12;
-
- /* min val is 8 */
- r = max((u16) 8, r);
- g = max((u16) 8, g);
- b = max((u16) 8, b);
-
- r |= 0x30;
- g |= 0x30;
- b |= 0x30;
-
- /* set the r,g,b gain registers */
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x0509, r));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x050A, g));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x050B, b));
-
- /* doing as qc-usb did */
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x050C, 0x2A));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x050D, 0x01));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x143F, 0x01));
-
- return 0;
-}
-
-static int qcm_sensor_set_exposure(struct uvd *uvd, int exposure)
-{
- int ret;
- int formedval;
-
- /* calculation was from qc-usb-messenger driver */
- formedval = ( exposure >> 12 );
-
- /* max value for formedval is 14 */
- formedval = min(formedval, 14);
-
- CHECK_RET(ret, qcm_stv_setb(uvd->dev,
- 0x143A, 0xF0 | formedval));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x143F, 0x01));
- return 0;
-}
-
-static int qcm_sensor_setlevels(struct uvd *uvd, int brightness, int contrast,
- int hue, int colour)
-{
- int ret;
- /* brightness is exposure, contrast is gain, colour is saturation */
- CHECK_RET(ret,
- qcm_sensor_set_exposure(uvd, brightness));
- CHECK_RET(ret, qcm_sensor_set_gains(uvd, hue, colour, contrast));
-
- return 0;
-}
-
-static int qcm_sensor_setsize(struct uvd *uvd, u8 size)
-{
- int ret;
-
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x1505, size));
- return 0;
-}
-
-static int qcm_sensor_set_shutter(struct uvd *uvd, int whiteness)
-{
- int ret;
- /* some rescaling as done by the qc-usb-messenger code */
- if (whiteness > 0xC000)
- whiteness = 0xC000 + (whiteness & 0x3FFF)*8;
-
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x143D,
- (whiteness >> 8) & 0xFF));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x143E,
- (whiteness >> 16) & 0x03));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x143F, 0x01));
-
- return 0;
-}
-
-static int qcm_sensor_init(struct uvd *uvd)
-{
- struct qcm *cam = (struct qcm *) uvd->user_data;
- int ret;
- int i;
-
- for (i=0; i < ARRAY_SIZE(regval_table) ; i++) {
- CHECK_RET(ret, qcm_stv_setb(uvd->dev,
- regval_table[i].reg,
- regval_table[i].val));
- }
-
- CHECK_RET(ret, qcm_stv_setw(uvd->dev, 0x15c1,
- cpu_to_le16(ISOC_PACKET_SIZE)));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x15c3, 0x08));
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, 0x143f, 0x01));
-
- CHECK_RET(ret, qcm_stv_setb(uvd->dev, STV_ISO_ENABLE, 0x00));
-
- CHECK_RET(ret, qcm_sensor_setsize(uvd, camera_sizes[cam->size].cmd));
-
- CHECK_RET(ret, qcm_sensor_setlevels(uvd, uvd->vpic.brightness,
- uvd->vpic.contrast, uvd->vpic.hue, uvd->vpic.colour));
-
- CHECK_RET(ret, qcm_sensor_set_shutter(uvd, uvd->vpic.whiteness));
- CHECK_RET(ret, qcm_sensor_setsize(uvd, camera_sizes[cam->size].cmd));
-
- return 0;
-}
-
-static int qcm_set_camera_size(struct uvd *uvd)
-{
- int ret;
- struct qcm *cam = (struct qcm *) uvd->user_data;
-
- CHECK_RET(ret, qcm_sensor_setsize(uvd, camera_sizes[cam->size].cmd));
- cam->width = camera_sizes[cam->size].width;
- cam->height = camera_sizes[cam->size].height;
- uvd->videosize = VIDEOSIZE(cam->width, cam->height);
-
- return 0;
-}
-
-static int qcm_setup_on_open(struct uvd *uvd)
-{
- int ret;
-
- CHECK_RET(ret, qcm_sensor_set_gains(uvd, uvd->vpic.hue,
- uvd->vpic.colour, uvd->vpic.contrast));
- CHECK_RET(ret, qcm_sensor_set_exposure(uvd, uvd->vpic.brightness));
- CHECK_RET(ret, qcm_sensor_set_shutter(uvd, uvd->vpic.whiteness));
- CHECK_RET(ret, qcm_set_camera_size(uvd));
- CHECK_RET(ret, qcm_camera_on(uvd));
- return 0;
-}
-
-static void qcm_adjust_picture(struct uvd *uvd)
-{
- int ret;
- struct qcm *cam = (struct qcm *) uvd->user_data;
-
- ret = qcm_camera_off(uvd);
- if (ret) {
- err("can't turn camera off. abandoning pic adjustment");
- return;
- }
-
- /* if there's been a change in contrast, hue, or
- colour then we need to recalculate hsv in order
- to update gains */
- if ((cam->contrast != uvd->vpic.contrast) ||
- (cam->hue != uvd->vpic.hue) ||
- (cam->colour != uvd->vpic.colour)) {
- cam->contrast = uvd->vpic.contrast;
- cam->hue = uvd->vpic.hue;
- cam->colour = uvd->vpic.colour;
- ret = qcm_sensor_set_gains(uvd, cam->hue, cam->colour,
- cam->contrast);
- if (ret) {
- err("can't set gains. abandoning pic adjustment");
- return;
- }
- }
-
- if (cam->brightness != uvd->vpic.brightness) {
- cam->brightness = uvd->vpic.brightness;
- ret = qcm_sensor_set_exposure(uvd, cam->brightness);
- if (ret) {
- err("can't set exposure. abandoning pic adjustment");
- return;
- }
- }
-
- if (cam->whiteness != uvd->vpic.whiteness) {
- cam->whiteness = uvd->vpic.whiteness;
- qcm_sensor_set_shutter(uvd, cam->whiteness);
- if (ret) {
- err("can't set shutter. abandoning pic adjustment");
- return;
- }
- }
-
- ret = qcm_camera_on(uvd);
- if (ret) {
- err("can't reenable camera. pic adjustment failed");
- return;
- }
-}
-
-static int qcm_process_frame(struct uvd *uvd, u8 *cdata, int framelen)
-{
- int datalen;
- int totaldata;
- struct framehdr {
- __be16 id;
- __be16 len;
- };
- struct framehdr *fhdr;
-
- totaldata = 0;
- while (framelen) {
- fhdr = (struct framehdr *) cdata;
- datalen = be16_to_cpu(fhdr->len);
- framelen -= 4;
- cdata += 4;
-
- if ((fhdr->id) == cpu_to_be16(0x8001)) {
- RingQueue_Enqueue(&uvd->dp, marker, 4);
- totaldata += 4;
- continue;
- }
- if ((fhdr->id & cpu_to_be16(0xFF00)) == cpu_to_be16(0x0200)) {
- RingQueue_Enqueue(&uvd->dp, cdata, datalen);
- totaldata += datalen;
- }
- framelen -= datalen;
- cdata += datalen;
- }
- return totaldata;
-}
-
-static int qcm_compress_iso(struct uvd *uvd, struct urb *dataurb)
-{
- int totlen;
- int i;
- unsigned char *cdata;
-
- totlen=0;
- for (i = 0; i < dataurb->number_of_packets; i++) {
- int n = dataurb->iso_frame_desc[i].actual_length;
- int st = dataurb->iso_frame_desc[i].status;
-
- cdata = dataurb->transfer_buffer +
- dataurb->iso_frame_desc[i].offset;
-
- if (st < 0) {
- dev_warn(&uvd->dev->dev,
- "Data error: packet=%d. len=%d. status=%d.\n",
- i, n, st);
- uvd->stats.iso_err_count++;
- continue;
- }
- if (!n)
- continue;
-
- totlen += qcm_process_frame(uvd, cdata, n);
- }
- return totlen;
-}
-
-static void resubmit_urb(struct uvd *uvd, struct urb *urb)
-{
- int ret;
-
- urb->dev = uvd->dev;
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret)
- err("usb_submit_urb error (%d)", ret);
-}
-
-static void qcm_isoc_irq(struct urb *urb)
-{
- int len;
- struct uvd *uvd = urb->context;
-
- if (!CAMERA_IS_OPERATIONAL(uvd))
- return;
-
- if (!uvd->streaming)
- return;
-
- uvd->stats.urb_count++;
-
- if (!urb->actual_length) {
- resubmit_urb(uvd, urb);
- return;
- }
-
- len = qcm_compress_iso(uvd, urb);
- resubmit_urb(uvd, urb);
- uvd->stats.urb_length = len;
- uvd->stats.data_count += len;
- if (len)
- RingQueue_WakeUpInterruptible(&uvd->dp);
-}
-
-static int qcm_start_data(struct uvd *uvd)
-{
- struct qcm *cam = (struct qcm *) uvd->user_data;
- int i;
- int errflag;
- int pktsz;
- int err;
-
- pktsz = uvd->iso_packet_len;
- if (!CAMERA_IS_OPERATIONAL(uvd)) {
- err("Camera is not operational");
- return -EFAULT;
- }
-
- err = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltActive);
- if (err < 0) {
- err("usb_set_interface error");
- uvd->last_error = err;
- return -EBUSY;
- }
-
- for (i=0; i < USBVIDEO_NUMSBUF; i++) {
- int j, k;
- struct urb *urb = uvd->sbuf[i].urb;
- urb->dev = uvd->dev;
- urb->context = uvd;
- urb->pipe = usb_rcvisocpipe(uvd->dev, uvd->video_endp);
- urb->interval = 1;
- urb->transfer_flags = URB_ISO_ASAP;
- urb->transfer_buffer = uvd->sbuf[i].data;
- urb->complete = qcm_isoc_irq;
- urb->number_of_packets = FRAMES_PER_DESC;
- urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
- for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
- urb->iso_frame_desc[j].offset = k;
- urb->iso_frame_desc[j].length = pktsz;
- }
- }
-
- uvd->streaming = 1;
- uvd->curframe = -1;
- for (i=0; i < USBVIDEO_NUMSBUF; i++) {
- errflag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
- if (errflag)
- err ("usb_submit_isoc(%d) ret %d", i, errflag);
- }
-
- CHECK_RET(err, qcm_setup_input_int(cam, uvd));
- CHECK_RET(err, qcm_camera_on(uvd));
- return 0;
-}
-
-static void qcm_stop_data(struct uvd *uvd)
-{
- struct qcm *cam;
- int i, j;
- int ret;
-
- if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
- return;
- cam = (struct qcm *) uvd->user_data;
-
- ret = qcm_camera_off(uvd);
- if (ret)
- dev_warn(&uvd->dev->dev, "couldn't turn the cam off.\n");
-
- uvd->streaming = 0;
-
- /* Unschedule all of the iso td's */
- for (i=0; i < USBVIDEO_NUMSBUF; i++)
- usb_kill_urb(uvd->sbuf[i].urb);
-
- qcm_stop_int_data(cam);
-
- if (!uvd->remove_pending) {
- /* Set packet size to 0 */
- j = usb_set_interface(uvd->dev, uvd->iface,
- uvd->ifaceAltInactive);
- if (j < 0) {
- err("usb_set_interface() error %d.", j);
- uvd->last_error = j;
- }
- }
-}
-
-static void qcm_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
-{
- struct qcm *cam = (struct qcm *) uvd->user_data;
- int x;
- struct rgb *rgbL0;
- struct rgb *rgbL1;
- struct bayL0 *bayL0;
- struct bayL1 *bayL1;
- int hor,ver,hordel,verdel;
- assert(frame != NULL);
-
- switch (cam->size) {
- case SIZE_160X120:
- hor = 162; ver = 124; hordel = 1; verdel = 2;
- break;
- case SIZE_320X240:
- default:
- hor = 324; ver = 248; hordel = 2; verdel = 4;
- break;
- }
-
- if (frame->scanstate == ScanState_Scanning) {
- while (RingQueue_GetLength(&uvd->dp) >=
- 4 + (hor*verdel + hordel)) {
- if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
- (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
- (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
- (RING_QUEUE_PEEK(&uvd->dp, 3) == 0xff)) {
- frame->curline = 0;
- frame->scanstate = ScanState_Lines;
- frame->frameState = FrameState_Grabbing;
- RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
- /*
- * if we're starting, we need to discard the first
- * 4 lines of y bayer data
- * and the first 2 gr elements of x bayer data
- */
- RING_QUEUE_DEQUEUE_BYTES(&uvd->dp,
- (hor*verdel + hordel));
- break;
- }
- RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
- }
- }
-
- if (frame->scanstate == ScanState_Scanning)
- return;
-
- /* now we can start processing bayer data so long as we have at least
- * 2 lines worth of data. this is the simplest demosaicing method that
- * I could think of. I use each 2x2 bayer element without interpolation
- * to generate 4 rgb pixels.
- */
- while ( frame->curline < cam->height &&
- (RingQueue_GetLength(&uvd->dp) >= hor*2)) {
- /* get 2 lines of bayer for demosaicing
- * into 2 lines of RGB */
- RingQueue_Dequeue(&uvd->dp, cam->scratch, hor*2);
- bayL0 = (struct bayL0 *) cam->scratch;
- bayL1 = (struct bayL1 *) (cam->scratch + hor);
- /* frame->curline is the rgb y line */
- rgbL0 = (struct rgb *)
- ( frame->data + (cam->width*3*frame->curline));
- /* w/2 because we're already doing 2 pixels */
- rgbL1 = rgbL0 + (cam->width/2);
-
- for (x=0; x < cam->width; x+=2) {
- rgbL0->r = bayL0->r;
- rgbL0->g = bayL0->g;
- rgbL0->b = bayL1->b;
-
- rgbL0->r2 = bayL0->r;
- rgbL0->g2 = bayL1->g;
- rgbL0->b2 = bayL1->b;
-
- rgbL1->r = bayL0->r;
- rgbL1->g = bayL1->g;
- rgbL1->b = bayL1->b;
-
- rgbL1->r2 = bayL0->r;
- rgbL1->g2 = bayL1->g;
- rgbL1->b2 = bayL1->b;
-
- rgbL0++;
- rgbL1++;
-
- bayL0++;
- bayL1++;
- }
-
- frame->seqRead_Length += cam->width*3*2;
- frame->curline += 2;
- }
- /* See if we filled the frame */
- if (frame->curline == cam->height) {
- frame->frameState = FrameState_Done_Hold;
- frame->curline = 0;
- uvd->curframe = -1;
- uvd->stats.frame_num++;
- }
-}
-
-/* taken from konicawc */
-static int qcm_set_video_mode(struct uvd *uvd, struct video_window *vw)
-{
- int ret;
- int newsize;
- int oldsize;
- int x = vw->width;
- int y = vw->height;
- struct qcm *cam = (struct qcm *) uvd->user_data;
-
- if (x > 0 && y > 0) {
- DEBUG(2, "trying to find size %d,%d", x, y);
- for (newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
- if ((camera_sizes[newsize].width == x) &&
- (camera_sizes[newsize].height == y))
- break;
- }
- } else
- newsize = cam->size;
-
- if (newsize > MAX_FRAME_SIZE) {
- DEBUG(1, "couldn't find size %d,%d", x, y);
- return -EINVAL;
- }
-
- if (newsize == cam->size) {
- DEBUG(1, "Nothing to do");
- return 0;
- }
-
- qcm_stop_data(uvd);
-
- if (cam->size != newsize) {
- oldsize = cam->size;
- cam->size = newsize;
- ret = qcm_set_camera_size(uvd);
- if (ret) {
- err("Couldn't set camera size, err=%d",ret);
- /* restore the original size */
- cam->size = oldsize;
- return ret;
- }
- }
-
- /* Flush the input queue and clear any current frame in progress */
-
- RingQueue_Flush(&uvd->dp);
- if (uvd->curframe != -1) {
- uvd->frame[uvd->curframe].curline = 0;
- uvd->frame[uvd->curframe].seqRead_Length = 0;
- uvd->frame[uvd->curframe].seqRead_Index = 0;
- }
-
- CHECK_RET(ret, qcm_start_data(uvd));
- return 0;
-}
-
-static int qcm_configure_video(struct uvd *uvd)
-{
- int ret;
- memset(&uvd->vpic, 0, sizeof(uvd->vpic));
- memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
-
- uvd->vpic.colour = colour;
- uvd->vpic.hue = hue;
- uvd->vpic.brightness = brightness;
- uvd->vpic.contrast = contrast;
- uvd->vpic.whiteness = whiteness;
- uvd->vpic.depth = 24;
- uvd->vpic.palette = VIDEO_PALETTE_RGB24;
-
- memset(&uvd->vcap, 0, sizeof(uvd->vcap));
- strcpy(uvd->vcap.name, "QCM USB Camera");
- uvd->vcap.type = VID_TYPE_CAPTURE;
- uvd->vcap.channels = 1;
- uvd->vcap.audios = 0;
-
- uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
- uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
- uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
- uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
-
- memset(&uvd->vchan, 0, sizeof(uvd->vchan));
- uvd->vchan.flags = 0 ;
- uvd->vchan.tuners = 0;
- uvd->vchan.channel = 0;
- uvd->vchan.type = VIDEO_TYPE_CAMERA;
- strcpy(uvd->vchan.name, "Camera");
-
- CHECK_RET(ret, qcm_sensor_init(uvd));
- return 0;
-}
-
-static int qcm_probe(struct usb_interface *intf,
- const struct usb_device_id *devid)
-{
- int err;
- struct uvd *uvd;
- struct usb_device *dev = interface_to_usbdev(intf);
- struct qcm *cam;
- size_t buffer_size;
- unsigned char video_ep;
- struct usb_host_interface *interface;
- struct usb_endpoint_descriptor *endpoint;
- int i,j;
- unsigned int ifacenum, ifacenum_inact=0;
- __le16 sensor_id;
-
- /* we don't support multiconfig cams */
- if (dev->descriptor.bNumConfigurations != 1)
- return -ENODEV;
-
- /* first check for the video interface and not
- * the audio interface */
- interface = &intf->cur_altsetting[0];
- if ((interface->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
- || (interface->desc.bInterfaceSubClass !=
- USB_CLASS_VENDOR_SPEC))
- return -ENODEV;
-
- /*
- walk through each endpoint in each setting in the interface
- stop when we find the one that's an isochronous IN endpoint.
- */
- for (i=0; i < intf->num_altsetting; i++) {
- interface = &intf->cur_altsetting[i];
- ifacenum = interface->desc.bAlternateSetting;
- /* walk the end points */
- for (j=0; j < interface->desc.bNumEndpoints; j++) {
- endpoint = &interface->endpoint[j].desc;
-
- if (usb_endpoint_dir_out(endpoint))
- continue; /* not input then not good */
-
- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
- if (!buffer_size) {
- ifacenum_inact = ifacenum;
- continue; /* 0 pkt size is not what we want */
- }
-
- if (usb_endpoint_xfer_isoc(endpoint)) {
- video_ep = endpoint->bEndpointAddress;
- /* break out of the search */
- goto good_videoep;
- }
- }
- }
- /* failed out since nothing useful was found */
- err("No suitable endpoint was found\n");
- return -ENODEV;
-
-good_videoep:
- /* disable isochronous stream before doing anything else */
- err = qcm_stv_setb(dev, STV_ISO_ENABLE, 0);
- if (err < 0) {
- err("Failed to disable sensor stream");
- return -EIO;
- }
-
- /*
- Check that this is the same unknown sensor that is known to work. This
- sensor is suspected to be the ST VV6422C001. I'll check the same value
- that the qc-usb driver checks. This value is probably not even the
- sensor ID since it matches the USB dev ID. Oh well. If it doesn't
- match, it's probably a diff sensor so exit and apologize.
- */
- err = qcm_stv_getw(dev, CMOS_SENSOR_IDREV, &sensor_id);
- if (err < 0) {
- err("Couldn't read sensor values. Err %d\n",err);
- return err;
- }
- if (sensor_id != cpu_to_le16(0x08F0)) {
- err("Sensor ID %x != %x. Unsupported. Sorry\n",
- le16_to_cpu(sensor_id), (0x08F0));
- return -ENODEV;
- }
-
- uvd = usbvideo_AllocateDevice(cams);
- if (!uvd)
- return -ENOMEM;
-
- cam = (struct qcm *) uvd->user_data;
-
- /* buf for doing demosaicing */
- cam->scratch = kmalloc(324*2, GFP_KERNEL);
- if (!cam->scratch) /* uvd freed in dereg */
- return -ENOMEM;
-
- /* yes, if we fail after here, cam->scratch gets freed
- by qcm_free_uvd */
-
- err = qcm_alloc_int_urb(cam);
- if (err < 0)
- return err;
-
- /* yes, if we fail after here, int urb gets freed
- by qcm_free_uvd */
-
- RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
- cam->width = camera_sizes[size].width;
- cam->height = camera_sizes[size].height;
- cam->size = size;
-
- uvd->debug = debug;
- uvd->flags = 0;
- uvd->dev = dev;
- uvd->iface = intf->altsetting->desc.bInterfaceNumber;
- uvd->ifaceAltActive = ifacenum;
- uvd->ifaceAltInactive = ifacenum_inact;
- uvd->video_endp = video_ep;
- uvd->iso_packet_len = buffer_size;
- uvd->paletteBits = 1L << VIDEO_PALETTE_RGB24;
- uvd->defaultPalette = VIDEO_PALETTE_RGB24;
- uvd->canvas = VIDEOSIZE(320, 240);
- uvd->videosize = VIDEOSIZE(cam->width, cam->height);
- err = qcm_configure_video(uvd);
- if (err) {
- err("failed to configure video settings");
- return err;
- }
-
- err = usbvideo_RegisterVideoDevice(uvd);
- if (err) { /* the uvd gets freed in Deregister */
- err("usbvideo_RegisterVideoDevice() failed.");
- return err;
- }
-
- uvd->max_frame_size = (320 * 240 * 3);
- qcm_register_input(cam, dev);
- usb_set_intfdata(intf, uvd);
- return 0;
-}
-
-static void qcm_free_uvd(struct uvd *uvd)
-{
- struct qcm *cam = (struct qcm *) uvd->user_data;
-
- kfree(cam->scratch);
- qcm_unregister_input(cam);
- qcm_free_int(cam);
-}
-
-static struct usbvideo_cb qcm_driver = {
- .probe = qcm_probe,
- .setupOnOpen = qcm_setup_on_open,
- .processData = qcm_process_isoc,
- .setVideoMode = qcm_set_video_mode,
- .startDataPump = qcm_start_data,
- .stopDataPump = qcm_stop_data,
- .adjustPicture = qcm_adjust_picture,
- .userFree = qcm_free_uvd
-};
-
-static int __init qcm_init(void)
-{
- printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
- DRIVER_DESC "\n");
-
- return usbvideo_register(
- &cams,
- MAX_CAMERAS,
- sizeof(struct qcm),
- "QCM",
- &qcm_driver,
- THIS_MODULE,
- qcm_table);
-}
-
-static void __exit qcm_exit(void)
-{
- usbvideo_Deregister(&cams);
-}
-
-module_param(size, int, 0);
-MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 320x240");
-module_param(colour, int, 0);
-MODULE_PARM_DESC(colour, "Initial colour");
-module_param(hue, int, 0);
-MODULE_PARM_DESC(hue, "Initial hue");
-module_param(brightness, int, 0);
-MODULE_PARM_DESC(brightness, "Initial brightness");
-module_param(contrast, int, 0);
-MODULE_PARM_DESC(contrast, "Initial contrast");
-module_param(whiteness, int, 0);
-MODULE_PARM_DESC(whiteness, "Initial whiteness");
-
-#ifdef CONFIG_USB_DEBUG
-module_param(debug, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
-#endif
-
-module_init(qcm_init);
-module_exit(qcm_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jaya Kumar");
-MODULE_DESCRIPTION("QCM USB Camera");
-MODULE_SUPPORTED_DEVICE("QCM USB Camera");
git.openpandora.org / pandora-kernel.git / commitdiff