559 lines
14 KiB
C
559 lines
14 KiB
C
/*
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* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
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* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
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* Copyright (c) 2002, 2003 Tuukka Toivonen
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* Copyright (c) 2008 Erik Andrén
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* P/N 861037: Sensor HDCS1000 ASIC STV0600
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* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
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* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
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* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
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* P/N 861075-0040: Sensor HDCS1000 ASIC
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* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
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* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
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*/
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#include "stv06xx_sensor.h"
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MODULE_AUTHOR("Erik Andrén");
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MODULE_DESCRIPTION("STV06XX USB Camera Driver");
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MODULE_LICENSE("GPL");
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static int dump_bridge;
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static int dump_sensor;
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int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
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{
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int err;
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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u8 len = (i2c_data > 0xff) ? 2 : 1;
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buf[0] = i2c_data & 0xff;
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buf[1] = (i2c_data >> 8) & 0xff;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x04, 0x40, address, 0, buf, len,
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STV06XX_URB_MSG_TIMEOUT);
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PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
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i2c_data, address, err);
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return (err < 0) ? err : 0;
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}
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int stv06xx_read_bridge(struct sd *sd, u16 address, u8 *i2c_data)
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{
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int err;
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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0x04, 0xc0, address, 0, buf, 1,
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STV06XX_URB_MSG_TIMEOUT);
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*i2c_data = buf[0];
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PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
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*i2c_data, address, err);
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return (err < 0) ? err : 0;
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}
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/* Wraps the normal write sensor bytes / words functions for writing a
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single value */
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int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
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{
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if (sd->sensor->i2c_len == 2) {
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u16 data[2] = { address, value };
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return stv06xx_write_sensor_words(sd, data, 1);
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} else {
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u8 data[2] = { address, value };
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return stv06xx_write_sensor_bytes(sd, data, 1);
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}
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}
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static int stv06xx_write_sensor_finish(struct sd *sd)
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{
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int err = 0;
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if (sd->bridge == BRIDGE_STV610) {
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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buf[0] = 0;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x04, 0x40, 0x1704, 0, buf, 1,
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STV06XX_URB_MSG_TIMEOUT);
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}
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return (err < 0) ? err : 0;
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}
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int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len)
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{
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int err, i, j;
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
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for (i = 0; i < len;) {
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/* Build the command buffer */
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memset(buf, 0, I2C_BUFFER_LENGTH);
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for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) {
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buf[j] = data[2*i];
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buf[0x10 + j] = data[2*i+1];
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PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x",
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data[2*i+1], data[2*i]);
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}
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buf[0x20] = sd->sensor->i2c_addr;
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buf[0x21] = j - 1; /* Number of commands to send - 1 */
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buf[0x22] = I2C_WRITE_CMD;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x04, 0x40, 0x0400, 0, buf,
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I2C_BUFFER_LENGTH,
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STV06XX_URB_MSG_TIMEOUT);
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if (err < 0)
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return err;
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}
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return stv06xx_write_sensor_finish(sd);
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}
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int stv06xx_write_sensor_words(struct sd *sd, const u16 *data, u8 len)
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{
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int err, i, j;
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
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for (i = 0; i < len;) {
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/* Build the command buffer */
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memset(buf, 0, I2C_BUFFER_LENGTH);
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for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
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buf[j] = data[2*i];
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buf[0x10 + j * 2] = data[2*i+1];
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buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
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PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
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data[2*i+1], data[2*i]);
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}
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buf[0x20] = sd->sensor->i2c_addr;
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buf[0x21] = j - 1; /* Number of commands to send - 1 */
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buf[0x22] = I2C_WRITE_CMD;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x04, 0x40, 0x0400, 0, buf,
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I2C_BUFFER_LENGTH,
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STV06XX_URB_MSG_TIMEOUT);
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if (err < 0)
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return err;
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}
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return stv06xx_write_sensor_finish(sd);
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}
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int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value)
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{
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int err;
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
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if (err < 0)
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return err;
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/* Clear mem */
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memset(buf, 0, I2C_BUFFER_LENGTH);
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buf[0] = address;
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buf[0x20] = sd->sensor->i2c_addr;
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buf[0x21] = 0;
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/* Read I2C register */
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buf[0x22] = I2C_READ_CMD;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
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STV06XX_URB_MSG_TIMEOUT);
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if (err < 0) {
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PDEBUG(D_ERR, "I2C: Read error writing address: %d", err);
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return err;
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}
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err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
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STV06XX_URB_MSG_TIMEOUT);
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if (sd->sensor->i2c_len == 2)
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*value = buf[0] | (buf[1] << 8);
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else
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*value = buf[0];
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PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
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*value, address, err);
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return (err < 0) ? err : 0;
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}
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/* Dumps all bridge registers */
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static void stv06xx_dump_bridge(struct sd *sd)
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{
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int i;
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u8 data, buf;
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info("Dumping all stv06xx bridge registers");
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for (i = 0x1400; i < 0x160f; i++) {
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stv06xx_read_bridge(sd, i, &data);
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info("Read 0x%x from address 0x%x", data, i);
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}
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for (i = 0x1400; i < 0x160f; i++) {
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stv06xx_read_bridge(sd, i, &data);
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buf = data;
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stv06xx_write_bridge(sd, i, 0xff);
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stv06xx_read_bridge(sd, i, &data);
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if (data == 0xff)
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info("Register 0x%x is read/write", i);
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else if (data != buf)
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info("Register 0x%x is read/write,"
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"but only partially", i);
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else
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info("Register 0x%x is read-only", i);
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stv06xx_write_bridge(sd, i, buf);
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}
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}
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/* this function is called at probe and resume time */
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static int stv06xx_init(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int err;
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PDEBUG(D_PROBE, "Initializing camera");
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/* Let the usb init settle for a bit
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before performing the initialization */
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msleep(250);
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err = sd->sensor->init(sd);
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if (dump_sensor && sd->sensor->dump)
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sd->sensor->dump(sd);
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return (err < 0) ? err : 0;
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}
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/* Start the camera */
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static int stv06xx_start(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int err;
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/* Prepare the sensor for start */
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err = sd->sensor->start(sd);
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if (err < 0)
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goto out;
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/* Start isochronous streaming */
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err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
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out:
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if (err < 0)
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PDEBUG(D_STREAM, "Starting stream failed");
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else
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PDEBUG(D_STREAM, "Started streaming");
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return (err < 0) ? err : 0;
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}
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static void stv06xx_stopN(struct gspca_dev *gspca_dev)
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{
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int err;
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struct sd *sd = (struct sd *) gspca_dev;
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/* stop ISO-streaming */
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err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
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if (err < 0)
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goto out;
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err = sd->sensor->stop(sd);
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out:
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if (err < 0)
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PDEBUG(D_STREAM, "Failed to stop stream");
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else
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PDEBUG(D_STREAM, "Stopped streaming");
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}
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/*
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* Analyse an USB packet of the data stream and store it appropriately.
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* Each packet contains an integral number of chunks. Each chunk has
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* 2-bytes identification, followed by 2-bytes that describe the chunk
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* length. Known/guessed chunk identifications are:
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* 8001/8005/C001/C005 - Begin new frame
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* 8002/8006/C002/C006 - End frame
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* 0200/4200 - Contains actual image data, bayer or compressed
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* 0005 - 11 bytes of unknown data
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* 0100 - 2 bytes of unknown data
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* The 0005 and 0100 chunks seem to appear only in compressed stream.
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*/
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static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
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struct gspca_frame *frame, /* target */
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__u8 *data, /* isoc packet */
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int len) /* iso packet length */
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{
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struct sd *sd = (struct sd *) gspca_dev;
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PDEBUG(D_PACK, "Packet of length %d arrived", len);
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/* A packet may contain several frames
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loop until the whole packet is reached */
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while (len) {
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int id, chunk_len;
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if (len < 4) {
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PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
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return;
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}
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/* Capture the id */
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id = (data[0] << 8) | data[1];
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/* Capture the chunk length */
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chunk_len = (data[2] << 8) | data[3];
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PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
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data += 4;
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len -= 4;
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if (len < chunk_len) {
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PDEBUG(D_ERR, "URB packet length is smaller"
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" than the specified chunk length");
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gspca_dev->last_packet_type = DISCARD_PACKET;
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return;
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}
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/* First byte seem to be 02=data 2nd byte is unknown??? */
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if (sd->bridge == BRIDGE_ST6422 && (id & 0xFF00) == 0x0200)
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goto frame_data;
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switch (id) {
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case 0x0200:
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case 0x4200:
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frame_data:
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PDEBUG(D_PACK, "Frame data packet detected");
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if (sd->to_skip) {
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int skip = (sd->to_skip < chunk_len) ?
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sd->to_skip : chunk_len;
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data += skip;
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len -= skip;
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chunk_len -= skip;
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sd->to_skip -= skip;
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}
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gspca_frame_add(gspca_dev, INTER_PACKET, frame,
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data, chunk_len);
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break;
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case 0x8001:
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case 0x8005:
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case 0xc001:
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case 0xc005:
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PDEBUG(D_PACK, "Starting new frame");
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/* Create a new frame, chunk length should be zero */
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gspca_frame_add(gspca_dev, FIRST_PACKET,
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frame, data, 0);
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if (sd->bridge == BRIDGE_ST6422)
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sd->to_skip = gspca_dev->width * 4;
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if (chunk_len)
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PDEBUG(D_ERR, "Chunk length is "
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"non-zero on a SOF");
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break;
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case 0x8002:
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case 0x8006:
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case 0xc002:
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PDEBUG(D_PACK, "End of frame detected");
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/* Complete the last frame (if any) */
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frame = gspca_frame_add(gspca_dev, LAST_PACKET,
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frame, data, 0);
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if (chunk_len)
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PDEBUG(D_ERR, "Chunk length is "
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"non-zero on a EOF");
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break;
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case 0x0005:
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PDEBUG(D_PACK, "Chunk 0x005 detected");
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/* Unknown chunk with 11 bytes of data,
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occurs just before end of each frame
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in compressed mode */
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break;
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case 0x0100:
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PDEBUG(D_PACK, "Chunk 0x0100 detected");
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/* Unknown chunk with 2 bytes of data,
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occurs 2-3 times per USB interrupt */
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break;
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case 0x42ff:
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PDEBUG(D_PACK, "Chunk 0x42ff detected");
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/* Special chunk seen sometimes on the ST6422 */
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break;
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default:
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PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
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/* Unknown chunk */
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}
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data += chunk_len;
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len -= chunk_len;
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}
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}
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static int stv06xx_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id);
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/* sub-driver description */
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static const struct sd_desc sd_desc = {
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.name = MODULE_NAME,
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.config = stv06xx_config,
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.init = stv06xx_init,
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.start = stv06xx_start,
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.stopN = stv06xx_stopN,
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.pkt_scan = stv06xx_pkt_scan
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};
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/* This function is called at probe time */
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static int stv06xx_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct cam *cam;
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PDEBUG(D_PROBE, "Configuring camera");
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cam = &gspca_dev->cam;
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sd->desc = sd_desc;
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sd->bridge = id->driver_info;
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gspca_dev->sd_desc = &sd->desc;
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if (dump_bridge)
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stv06xx_dump_bridge(sd);
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sd->sensor = &stv06xx_sensor_st6422;
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if (!sd->sensor->probe(sd))
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return 0;
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sd->sensor = &stv06xx_sensor_vv6410;
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if (!sd->sensor->probe(sd))
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return 0;
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sd->sensor = &stv06xx_sensor_hdcs1x00;
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if (!sd->sensor->probe(sd))
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return 0;
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sd->sensor = &stv06xx_sensor_hdcs1020;
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if (!sd->sensor->probe(sd))
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return 0;
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sd->sensor = &stv06xx_sensor_pb0100;
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if (!sd->sensor->probe(sd))
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return 0;
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sd->sensor = NULL;
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return -ENODEV;
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}
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/* -- module initialisation -- */
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static const __devinitdata struct usb_device_id device_table[] = {
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/* QuickCam Express */
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{USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },
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/* LEGO cam / QuickCam Web */
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{USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },
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/* Dexxa WebCam USB */
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{USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },
|
|
/* QuickCam Messenger */
|
|
{USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },
|
|
/* QuickCam Communicate */
|
|
{USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },
|
|
/* QuickCam Messenger (new) */
|
|
{USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, device_table);
|
|
|
|
/* -- device connect -- */
|
|
static int sd_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
PDEBUG(D_PROBE, "Probing for a stv06xx device");
|
|
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
|
|
THIS_MODULE);
|
|
}
|
|
|
|
static void sd_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
|
|
|
|
if (sd->sensor->disconnect)
|
|
sd->sensor->disconnect(sd);
|
|
gspca_disconnect(intf);
|
|
}
|
|
|
|
static struct usb_driver sd_driver = {
|
|
.name = MODULE_NAME,
|
|
.id_table = device_table,
|
|
.probe = sd_probe,
|
|
.disconnect = sd_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);
|
|
|
|
module_param(dump_bridge, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
|
|
|
|
module_param(dump_sensor, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");
|