--- /dev/null
+/*
+ * 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->pixfmt.height,
+ gspca_dev->pixfmt.width,
+ 0x21); /* JPEG 422 */
+ jpeg_set_qual(dev->jpeg_hdr, dev->quality);
+ PDEBUG(D_STREAM, "Start streaming at %dx%d",
+ gspca_dev->pixfmt.height, gspca_dev->pixfmt.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);
Code Review / kvmfornfv.git / blobdiff