diff options
Diffstat (limited to 'drivers/media/usb/gspca/stv0680.c')
| -rw-r--r-- | drivers/media/usb/gspca/stv0680.c | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/stv0680.c b/drivers/media/usb/gspca/stv0680.c new file mode 100644 index 000000000..3ff5ed74b --- /dev/null +++ b/drivers/media/usb/gspca/stv0680.c @@ -0,0 +1,349 @@ +/* + * STV0680 USB Camera Driver + * + * Copyright (C) 2009 Hans de Goede <hdegoede@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. + * + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#define MODULE_NAME "stv0680" + +#include "gspca.h" + +MODULE_AUTHOR("Hans de Goede <hdegoede@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; +}; + +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)) + pr_err("usb_control_msg error %i, request = 0x%x, error = %i\n", + 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 */ + gspca_err(gspca_dev, "last error: %i, command = 0x%x\n", + 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) { + gspca_err(gspca_dev, "Get_Camera_Mode failed\n"); + 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) { + gspca_err(gspca_dev, "Set_Camera_Mode failed\n"); + return stv0680_handle_error(gspca_dev, -EIO); + } + + /* Verify we got what we've asked for */ + if (stv0680_get_video_mode(gspca_dev) != mode) { + gspca_err(gspca_dev, "Error setting camera video mode!\n"); + 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 initialization 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) { + gspca_err(gspca_dev, "STV(e): camera ping failed!!\n"); + 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) { + gspca_err(gspca_dev, "Could not get descriptor 0200\n"); + 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)) { + gspca_err(gspca_dev, "Camera supports neither CIF nor QVGA mode\n"); + return -ENODEV; + } + if (gspca_dev->usb_buf[7] & 0x01) + gspca_dbg(gspca_dev, D_PROBE, "Camera supports CIF mode\n"); + if (gspca_dev->usb_buf[7] & 0x02) + gspca_dbg(gspca_dev, D_PROBE, "Camera supports VGA mode\n"); + if (gspca_dev->usb_buf[7] & 0x04) + gspca_dbg(gspca_dev, D_PROBE, "Camera supports QCIF mode\n"); + if (gspca_dev->usb_buf[7] & 0x08) + gspca_dbg(gspca_dev, D_PROBE, "Camera supports QVGA mode\n"); + + if (gspca_dev->usb_buf[7] & 0x01) + sd->video_mode = 0x00; /* CIF */ + else + sd->video_mode = 0x03; /* QVGA */ + + /* FW rev, ASIC rev, sensor ID */ + gspca_dbg(gspca_dev, D_PROBE, "Firmware rev is %i.%i\n", + gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]); + gspca_dbg(gspca_dev, D_PROBE, "ASIC rev is %i.%i", + gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]); + gspca_dbg(gspca_dev, 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) { + pr_err("Could not get descriptor 0100\n"); + 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, + .config = sd_config, + .init = sd_init, + .start = sd_start, + .stopN = sd_stopN, + .stop0 = sd_stop0, + .pkt_scan = sd_pkt_scan, +}; + +/* -- module initialisation -- */ +static const 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, + .reset_resume = gspca_resume, +#endif +}; + +module_usb_driver(sd_driver); |