diff options
Diffstat (limited to 'drivers/media/usb/gspca/jeilinj.c')
| -rw-r--r-- | drivers/media/usb/gspca/jeilinj.c | 548 |
1 files changed, 548 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/jeilinj.c b/drivers/media/usb/gspca/jeilinj.c new file mode 100644 index 0000000..8da3dde --- /dev/null +++ b/drivers/media/usb/gspca/jeilinj.c @@ -0,0 +1,548 @@ +/* + * Jeilinj subdriver + * + * Supports some Jeilin dual-mode cameras which use bulk transport and + * download raw JPEG data. + * + * Copyright (C) 2009 Theodore Kilgore + * + * Sportscam DV15 support and control settings are + * Copyright (C) 2011 Patrice Chotard + * + * 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 + * 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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#define MODULE_NAME "jeilinj" + +#include <linux/slab.h> +#include "gspca.h" +#include "jpeg.h" + +MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>"); +MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver"); +MODULE_LICENSE("GPL"); + +/* Default timeouts, in ms */ +#define JEILINJ_CMD_TIMEOUT 500 +#define JEILINJ_CMD_DELAY 160 +#define JEILINJ_DATA_TIMEOUT 1000 + +/* Maximum transfer size to use. */ +#define JEILINJ_MAX_TRANSFER 0x200 +#define FRAME_HEADER_LEN 0x10 +#define FRAME_START 0xFFFFFFFF + +enum { + SAKAR_57379, + SPORTSCAM_DV15, +}; + +#define CAMQUALITY_MIN 0 /* highest cam quality */ +#define CAMQUALITY_MAX 97 /* lowest cam quality */ + +/* Structure to hold all of our device specific stuff */ +struct sd { + struct gspca_dev gspca_dev; /* !! must be the first item */ + int blocks_left; + const struct v4l2_pix_format *cap_mode; + struct v4l2_ctrl *freq; + struct v4l2_ctrl *jpegqual; + /* Driver stuff */ + u8 type; + u8 quality; /* image quality */ +#define QUALITY_MIN 35 +#define QUALITY_MAX 85 +#define QUALITY_DEF 85 + u8 jpeg_hdr[JPEG_HDR_SZ]; +}; + +struct jlj_command { + unsigned char instruction[2]; + unsigned char ack_wanted; + unsigned char delay; +}; + +/* AFAICT these cameras will only do 320x240. */ +static struct v4l2_pix_format jlj_mode[] = { + { 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, + .bytesperline = 320, + .sizeimage = 320 * 240, + .colorspace = V4L2_COLORSPACE_JPEG, + .priv = 0}, + { 640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, + .bytesperline = 640, + .sizeimage = 640 * 480, + .colorspace = V4L2_COLORSPACE_JPEG, + .priv = 0} +}; + +/* + * cam uses endpoint 0x03 to send commands, 0x84 for read commands, + * and 0x82 for bulk transfer. + */ + +/* All commands are two bytes only */ +static void jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command) +{ + int retval; + + if (gspca_dev->usb_err < 0) + return; + memcpy(gspca_dev->usb_buf, command, 2); + retval = usb_bulk_msg(gspca_dev->dev, + usb_sndbulkpipe(gspca_dev->dev, 3), + gspca_dev->usb_buf, 2, NULL, 500); + if (retval < 0) { + pr_err("command write [%02x] error %d\n", + gspca_dev->usb_buf[0], retval); + gspca_dev->usb_err = retval; + } +} + +/* Responses are one byte only */ +static void jlj_read1(struct gspca_dev *gspca_dev, unsigned char *response) +{ + int retval; + + if (gspca_dev->usb_err < 0) + return; + retval = usb_bulk_msg(gspca_dev->dev, + usb_rcvbulkpipe(gspca_dev->dev, 0x84), + gspca_dev->usb_buf, 1, NULL, 500); + *response = gspca_dev->usb_buf[0]; + if (retval < 0) { + pr_err("read command [%02x] error %d\n", + gspca_dev->usb_buf[0], retval); + gspca_dev->usb_err = retval; + } +} + +static void setfreq(struct gspca_dev *gspca_dev, s32 val) +{ + u8 freq_commands[][2] = { + {0x71, 0x80}, + {0x70, 0x07} + }; + + freq_commands[0][1] |= val >> 1; + + jlj_write2(gspca_dev, freq_commands[0]); + jlj_write2(gspca_dev, freq_commands[1]); +} + +static void setcamquality(struct gspca_dev *gspca_dev, s32 val) +{ + u8 quality_commands[][2] = { + {0x71, 0x1E}, + {0x70, 0x06} + }; + u8 camquality; + + /* adapt camera quality from jpeg quality */ + camquality = ((QUALITY_MAX - val) * CAMQUALITY_MAX) + / (QUALITY_MAX - QUALITY_MIN); + quality_commands[0][1] += camquality; + + jlj_write2(gspca_dev, quality_commands[0]); + jlj_write2(gspca_dev, quality_commands[1]); +} + +static void setautogain(struct gspca_dev *gspca_dev, s32 val) +{ + u8 autogain_commands[][2] = { + {0x94, 0x02}, + {0xcf, 0x00} + }; + + autogain_commands[1][1] = val << 4; + + jlj_write2(gspca_dev, autogain_commands[0]); + jlj_write2(gspca_dev, autogain_commands[1]); +} + +static void setred(struct gspca_dev *gspca_dev, s32 val) +{ + u8 setred_commands[][2] = { + {0x94, 0x02}, + {0xe6, 0x00} + }; + + setred_commands[1][1] = val; + + jlj_write2(gspca_dev, setred_commands[0]); + jlj_write2(gspca_dev, setred_commands[1]); +} + +static void setgreen(struct gspca_dev *gspca_dev, s32 val) +{ + u8 setgreen_commands[][2] = { + {0x94, 0x02}, + {0xe7, 0x00} + }; + + setgreen_commands[1][1] = val; + + jlj_write2(gspca_dev, setgreen_commands[0]); + jlj_write2(gspca_dev, setgreen_commands[1]); +} + +static void setblue(struct gspca_dev *gspca_dev, s32 val) +{ + u8 setblue_commands[][2] = { + {0x94, 0x02}, + {0xe9, 0x00} + }; + + setblue_commands[1][1] = val; + + jlj_write2(gspca_dev, setblue_commands[0]); + jlj_write2(gspca_dev, setblue_commands[1]); +} + +static int jlj_start(struct gspca_dev *gspca_dev) +{ + int i; + int start_commands_size; + u8 response = 0xff; + struct sd *sd = (struct sd *) gspca_dev; + struct jlj_command start_commands[] = { + {{0x71, 0x81}, 0, 0}, + {{0x70, 0x05}, 0, JEILINJ_CMD_DELAY}, + {{0x95, 0x70}, 1, 0}, + {{0x71, 0x81 - gspca_dev->curr_mode}, 0, 0}, + {{0x70, 0x04}, 0, JEILINJ_CMD_DELAY}, + {{0x95, 0x70}, 1, 0}, + {{0x71, 0x00}, 0, 0}, /* start streaming ??*/ + {{0x70, 0x08}, 0, JEILINJ_CMD_DELAY}, + {{0x95, 0x70}, 1, 0}, +#define SPORTSCAM_DV15_CMD_SIZE 9 + {{0x94, 0x02}, 0, 0}, + {{0xde, 0x24}, 0, 0}, + {{0x94, 0x02}, 0, 0}, + {{0xdd, 0xf0}, 0, 0}, + {{0x94, 0x02}, 0, 0}, + {{0xe3, 0x2c}, 0, 0}, + {{0x94, 0x02}, 0, 0}, + {{0xe4, 0x00}, 0, 0}, + {{0x94, 0x02}, 0, 0}, + {{0xe5, 0x00}, 0, 0}, + {{0x94, 0x02}, 0, 0}, + {{0xe6, 0x2c}, 0, 0}, + {{0x94, 0x03}, 0, 0}, + {{0xaa, 0x00}, 0, 0} + }; + + sd->blocks_left = 0; + /* Under Windows, USB spy shows that only the 9 first start + * commands are used for SPORTSCAM_DV15 webcam + */ + if (sd->type == SPORTSCAM_DV15) + start_commands_size = SPORTSCAM_DV15_CMD_SIZE; + else + start_commands_size = ARRAY_SIZE(start_commands); + + for (i = 0; i < start_commands_size; i++) { + jlj_write2(gspca_dev, start_commands[i].instruction); + if (start_commands[i].delay) + msleep(start_commands[i].delay); + if (start_commands[i].ack_wanted) + jlj_read1(gspca_dev, &response); + } + setcamquality(gspca_dev, v4l2_ctrl_g_ctrl(sd->jpegqual)); + msleep(2); + setfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->freq)); + if (gspca_dev->usb_err < 0) + PERR("Start streaming command failed"); + return gspca_dev->usb_err; +} + +static void sd_pkt_scan(struct gspca_dev *gspca_dev, + u8 *data, int len) +{ + struct sd *sd = (struct sd *) gspca_dev; + int packet_type; + u32 header_marker; + + PDEBUG(D_STREAM, "Got %d bytes out of %d for Block 0", + len, JEILINJ_MAX_TRANSFER); + if (len != JEILINJ_MAX_TRANSFER) { + PDEBUG(D_PACK, "bad length"); + goto discard; + } + /* check if it's start of frame */ + header_marker = ((u32 *)data)[0]; + if (header_marker == FRAME_START) { + sd->blocks_left = data[0x0a] - 1; + PDEBUG(D_STREAM, "blocks_left = 0x%x", sd->blocks_left); + /* Start a new frame, and add the JPEG header, first thing */ + gspca_frame_add(gspca_dev, FIRST_PACKET, + sd->jpeg_hdr, JPEG_HDR_SZ); + /* Toss line 0 of data block 0, keep the rest. */ + gspca_frame_add(gspca_dev, INTER_PACKET, + data + FRAME_HEADER_LEN, + JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN); + } else if (sd->blocks_left > 0) { + PDEBUG(D_STREAM, "%d blocks remaining for frame", + sd->blocks_left); + sd->blocks_left -= 1; + if (sd->blocks_left == 0) + packet_type = LAST_PACKET; + else + packet_type = INTER_PACKET; + gspca_frame_add(gspca_dev, packet_type, + data, JEILINJ_MAX_TRANSFER); + } else + goto discard; + return; +discard: + /* Discard data until a new frame starts. */ + gspca_dev->last_packet_type = DISCARD_PACKET; +} + +/* This function is called at probe time just before sd_init */ +static int sd_config(struct gspca_dev *gspca_dev, + const struct usb_device_id *id) +{ + struct cam *cam = &gspca_dev->cam; + struct sd *dev = (struct sd *) gspca_dev; + + dev->type = id->driver_info; + dev->quality = QUALITY_DEF; + + cam->cam_mode = jlj_mode; + cam->nmodes = ARRAY_SIZE(jlj_mode); + cam->bulk = 1; + cam->bulk_nurbs = 1; + cam->bulk_size = JEILINJ_MAX_TRANSFER; + return 0; +} + +static void sd_stopN(struct gspca_dev *gspca_dev) +{ + int i; + u8 *buf; + static u8 stop_commands[][2] = { + {0x71, 0x00}, + {0x70, 0x09}, + {0x71, 0x80}, + {0x70, 0x05} + }; + + for (;;) { + /* get the image remaining blocks */ + usb_bulk_msg(gspca_dev->dev, + gspca_dev->urb[0]->pipe, + gspca_dev->urb[0]->transfer_buffer, + JEILINJ_MAX_TRANSFER, NULL, + JEILINJ_DATA_TIMEOUT); + + /* search for 0xff 0xd9 (EOF for JPEG) */ + i = 0; + buf = gspca_dev->urb[0]->transfer_buffer; + while ((i < (JEILINJ_MAX_TRANSFER - 1)) && + ((buf[i] != 0xff) || (buf[i+1] != 0xd9))) + i++; + + if (i != (JEILINJ_MAX_TRANSFER - 1)) + /* last remaining block found */ + break; + } + + for (i = 0; i < ARRAY_SIZE(stop_commands); i++) + jlj_write2(gspca_dev, stop_commands[i]); +} + +/* this function is called at probe and resume time */ +static int sd_init(struct gspca_dev *gspca_dev) +{ + return gspca_dev->usb_err; +} + +/* Set up for getting frames. */ +static int sd_start(struct gspca_dev *gspca_dev) +{ + struct sd *dev = (struct sd *) gspca_dev; + + /* create the JPEG header */ + jpeg_define(dev->jpeg_hdr, gspca_dev->height, gspca_dev->width, + 0x21); /* JPEG 422 */ + jpeg_set_qual(dev->jpeg_hdr, dev->quality); + PDEBUG(D_STREAM, "Start streaming at %dx%d", + gspca_dev->height, gspca_dev->width); + jlj_start(gspca_dev); + return gspca_dev->usb_err; +} + +/* Table of supported USB devices */ +static const struct usb_device_id device_table[] = { + {USB_DEVICE(0x0979, 0x0280), .driver_info = SAKAR_57379}, + {USB_DEVICE(0x0979, 0x0270), .driver_info = SPORTSCAM_DV15}, + {} +}; + +MODULE_DEVICE_TABLE(usb, device_table); + +static int sd_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct gspca_dev *gspca_dev = + container_of(ctrl->handler, struct gspca_dev, ctrl_handler); + struct sd *sd = (struct sd *)gspca_dev; + + gspca_dev->usb_err = 0; + + if (!gspca_dev->streaming) + return 0; + + switch (ctrl->id) { + case V4L2_CID_POWER_LINE_FREQUENCY: + setfreq(gspca_dev, ctrl->val); + break; + case V4L2_CID_RED_BALANCE: + setred(gspca_dev, ctrl->val); + break; + case V4L2_CID_GAIN: + setgreen(gspca_dev, ctrl->val); + break; + case V4L2_CID_BLUE_BALANCE: + setblue(gspca_dev, ctrl->val); + break; + case V4L2_CID_AUTOGAIN: + setautogain(gspca_dev, ctrl->val); + break; + case V4L2_CID_JPEG_COMPRESSION_QUALITY: + jpeg_set_qual(sd->jpeg_hdr, ctrl->val); + setcamquality(gspca_dev, ctrl->val); + break; + } + return gspca_dev->usb_err; +} + +static const struct v4l2_ctrl_ops sd_ctrl_ops = { + .s_ctrl = sd_s_ctrl, +}; + +static int sd_init_controls(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *)gspca_dev; + struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; + static const struct v4l2_ctrl_config custom_autogain = { + .ops = &sd_ctrl_ops, + .id = V4L2_CID_AUTOGAIN, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Automatic Gain (and Exposure)", + .max = 3, + .step = 1, + .def = 0, + }; + + gspca_dev->vdev.ctrl_handler = hdl; + v4l2_ctrl_handler_init(hdl, 6); + sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, + V4L2_CID_POWER_LINE_FREQUENCY, + V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1, + V4L2_CID_POWER_LINE_FREQUENCY_60HZ); + v4l2_ctrl_new_custom(hdl, &custom_autogain, NULL); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_RED_BALANCE, 0, 3, 1, 2); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_GAIN, 0, 3, 1, 2); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_BLUE_BALANCE, 0, 3, 1, 2); + sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_JPEG_COMPRESSION_QUALITY, + QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF); + + if (hdl->error) { + pr_err("Could not initialize controls\n"); + return hdl->error; + } + return 0; +} + +static int sd_set_jcomp(struct gspca_dev *gspca_dev, + const struct v4l2_jpegcompression *jcomp) +{ + struct sd *sd = (struct sd *) gspca_dev; + + v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality); + return 0; +} + +static int sd_get_jcomp(struct gspca_dev *gspca_dev, + struct v4l2_jpegcompression *jcomp) +{ + struct sd *sd = (struct sd *) gspca_dev; + + memset(jcomp, 0, sizeof *jcomp); + jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual); + jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT + | V4L2_JPEG_MARKER_DQT; + return 0; +} + + +/* sub-driver description */ +static const struct sd_desc sd_desc_sakar_57379 = { + .name = MODULE_NAME, + .config = sd_config, + .init = sd_init, + .start = sd_start, + .stopN = sd_stopN, + .pkt_scan = sd_pkt_scan, +}; + +/* sub-driver description */ +static const struct sd_desc sd_desc_sportscam_dv15 = { + .name = MODULE_NAME, + .config = sd_config, + .init = sd_init, + .init_controls = sd_init_controls, + .start = sd_start, + .stopN = sd_stopN, + .pkt_scan = sd_pkt_scan, + .get_jcomp = sd_get_jcomp, + .set_jcomp = sd_set_jcomp, +}; + +static const struct sd_desc *sd_desc[2] = { + &sd_desc_sakar_57379, + &sd_desc_sportscam_dv15 +}; + +/* -- device connect -- */ +static int sd_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + return gspca_dev_probe(intf, id, + sd_desc[id->driver_info], + 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); |