linux/drivers/media/video/gspca/stv0680.c
Hans de Goede 388a6d5416 V4L/DVB (13996): gspca_stv0680: Fix streaming on vga cameras
Streaming of VGA stv0680 based cams (instead of CIF ones) failed, because
we were using the wrong control pipe for certain commands, this patch fixes
this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:39 -03:00

375 lines
10 KiB
C

/*
* STV0680 USB Camera Driver
*
* Copyright (C) 2009 Hans de Goede <hdgoede@redhat.com>
*
* This module is adapted from the in kernel v4l1 stv680 driver:
*
* 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 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
*
*/
#define MODULE_NAME "stv0680"
#include "gspca.h"
MODULE_AUTHOR("Hans de Goede <hdgoede@redhat.com>");
MODULE_DESCRIPTION("STV0680 USB Camera Driver");
MODULE_LICENSE("GPL");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
struct v4l2_pix_format mode;
u8 orig_mode;
u8 video_mode;
u8 current_mode;
};
/* V4L2 controls supported by the driver */
static const struct ctrl sd_ctrls[] = {
};
static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
int size)
{
int ret = -1;
u8 req_type = 0;
unsigned int pipe = 0;
switch (set) {
case 0: /* 0xc1 */
req_type = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
break;
case 1: /* 0x41 */
req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
break;
case 2: /* 0x80 */
req_type = USB_DIR_IN | USB_RECIP_DEVICE;
pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
break;
case 3: /* 0x40 */
req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
break;
}
ret = usb_control_msg(gspca_dev->dev, pipe,
req, req_type,
val, 0, gspca_dev->usb_buf, size, 500);
if ((ret < 0) && (req != 0x0a))
PDEBUG(D_ERR,
"usb_control_msg error %i, request = 0x%x, error = %i",
set, req, ret);
return ret;
}
static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
{
stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
PDEBUG(D_ERR, "last error: %i, command = 0x%x",
gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
return ret;
}
static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
{
/* Note not sure if this init of usb_buf is really necessary */
memset(gspca_dev->usb_buf, 0, 8);
gspca_dev->usb_buf[0] = 0x0f;
if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
PDEBUG(D_ERR, "Get_Camera_Mode failed");
return stv0680_handle_error(gspca_dev, -EIO);
}
return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
}
static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->current_mode == mode)
return 0;
memset(gspca_dev->usb_buf, 0, 8);
gspca_dev->usb_buf[0] = mode;
if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
PDEBUG(D_ERR, "Set_Camera_Mode failed");
return stv0680_handle_error(gspca_dev, -EIO);
}
/* Verify we got what we've asked for */
if (stv0680_get_video_mode(gspca_dev) != mode) {
PDEBUG(D_ERR, "Error setting camera video mode!");
return -EIO;
}
sd->current_mode = mode;
return 0;
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
int ret;
struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam = &gspca_dev->cam;
/* Give the camera some time to settle, otherwise initalization will
fail on hotplug, and yes it really needs a full second. */
msleep(1000);
/* ping camera to be sure STV0680 is present */
if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 ||
gspca_dev->usb_buf[0] != 0x56 || gspca_dev->usb_buf[1] != 0x78) {
PDEBUG(D_ERR, "STV(e): camera ping failed!!");
return stv0680_handle_error(gspca_dev, -ENODEV);
}
/* get camera descriptor */
if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
return stv0680_handle_error(gspca_dev, -ENODEV);
if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 ||
gspca_dev->usb_buf[7] != 0xa0 || gspca_dev->usb_buf[8] != 0x23) {
PDEBUG(D_ERR, "Could not get descriptor 0200.");
return stv0680_handle_error(gspca_dev, -ENODEV);
}
if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
return stv0680_handle_error(gspca_dev, -ENODEV);
if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
return stv0680_handle_error(gspca_dev, -ENODEV);
if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
return stv0680_handle_error(gspca_dev, -ENODEV);
if (!(gspca_dev->usb_buf[7] & 0x09)) {
PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode");
return -ENODEV;
}
if (gspca_dev->usb_buf[7] & 0x01)
PDEBUG(D_PROBE, "Camera supports CIF mode");
if (gspca_dev->usb_buf[7] & 0x02)
PDEBUG(D_PROBE, "Camera supports VGA mode");
if (gspca_dev->usb_buf[7] & 0x04)
PDEBUG(D_PROBE, "Camera supports QCIF mode");
if (gspca_dev->usb_buf[7] & 0x08)
PDEBUG(D_PROBE, "Camera supports QVGA mode");
if (gspca_dev->usb_buf[7] & 0x01)
sd->video_mode = 0x00; /* CIF */
else
sd->video_mode = 0x03; /* QVGA */
/* FW rev, ASIC rev, sensor ID */
PDEBUG(D_PROBE, "Firmware rev is %i.%i",
gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
PDEBUG(D_PROBE, "ASIC rev is %i.%i",
gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
PDEBUG(D_PROBE, "Sensor ID is %i",
(gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
ret = stv0680_get_video_mode(gspca_dev);
if (ret < 0)
return ret;
sd->current_mode = sd->orig_mode = ret;
ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
if (ret < 0)
return ret;
/* Get mode details */
if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
return stv0680_handle_error(gspca_dev, -EIO);
cam->bulk = 1;
cam->bulk_nurbs = 1; /* The cam cannot handle more */
cam->bulk_size = (gspca_dev->usb_buf[0] << 24) |
(gspca_dev->usb_buf[1] << 16) |
(gspca_dev->usb_buf[2] << 8) |
(gspca_dev->usb_buf[3]);
sd->mode.width = (gspca_dev->usb_buf[4] << 8) |
(gspca_dev->usb_buf[5]); /* 322, 356, 644 */
sd->mode.height = (gspca_dev->usb_buf[6] << 8) |
(gspca_dev->usb_buf[7]); /* 242, 292, 484 */
sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
sd->mode.field = V4L2_FIELD_NONE;
sd->mode.bytesperline = sd->mode.width;
sd->mode.sizeimage = cam->bulk_size;
sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
/* origGain = gspca_dev->usb_buf[12]; */
cam->cam_mode = &sd->mode;
cam->nmodes = 1;
ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
if (ret < 0)
return ret;
if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 ||
gspca_dev->usb_buf[8] != 0x53 || gspca_dev->usb_buf[9] != 0x05) {
PDEBUG(D_ERR, "Could not get descriptor 0100.");
return stv0680_handle_error(gspca_dev, -EIO);
}
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
return 0;
}
/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
int ret;
struct sd *sd = (struct sd *) gspca_dev;
ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
if (ret < 0)
return ret;
if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
return stv0680_handle_error(gspca_dev, -EIO);
/* Start stream at:
0x0000 = CIF (352x288)
0x0100 = VGA (640x480)
0x0300 = QVGA (320x240) */
if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
return stv0680_handle_error(gspca_dev, -EIO);
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
/* This is a high priority command; it stops all lower order cmds */
if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
stv0680_handle_error(gspca_dev, -EIO);
}
static void sd_stop0(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (!sd->gspca_dev.present)
return;
stv0680_set_video_mode(gspca_dev, sd->orig_mode);
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data,
int len)
{
struct sd *sd = (struct sd *) gspca_dev;
/* Every now and then the camera sends a 16 byte packet, no idea
what it contains, but it is not image data, when this
happens the frame received before this packet is corrupt,
so discard it. */
if (len != sd->mode.sizeimage) {
gspca_dev->last_packet_type = DISCARD_PACKET;
return;
}
/* Finish the previous frame, we do this upon reception of the next
packet, even though it is already complete so that the strange 16
byte packets send after a corrupt frame can discard it. */
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
/* Store the just received frame */
gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
}
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x0553, 0x0202)},
{USB_DEVICE(0x041e, 0x4007)},
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
THIS_MODULE);
}
static struct usb_driver sd_driver = {
.name = MODULE_NAME,
.id_table = device_table,
.probe = sd_probe,
.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
.suspend = gspca_suspend,
.resume = gspca_resume,
#endif
};
/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
int ret;
ret = usb_register(&sd_driver);
if (ret < 0)
return ret;
PDEBUG(D_PROBE, "registered");
return 0;
}
static void __exit sd_mod_exit(void)
{
usb_deregister(&sd_driver);
PDEBUG(D_PROBE, "deregistered");
}
module_init(sd_mod_init);
module_exit(sd_mod_exit);