1 files changed, 601 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/jeilinj.c b/drivers/media/video/gspca/jeilinj.c
new file mode 100644
index 00000000000..1bd9c4b542d
--- /dev/null
+++ b/drivers/media/video/gspca/jeilinj.c
@@ -0,0 +1,601 @@
+/*
+ * 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 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  */
+
+enum e_ctrl {
+        LIGHTFREQ,
+        AUTOGAIN,
+        RED,
+        GREEN,
+        BLUE,
+        NCTRLS          /* number of controls */
+};
+
+/* Structure to hold all of our device specific stuff */
+struct sd {
+        struct gspca_dev gspca_dev;     /* !! must be the first item */
+        struct gspca_ctrl ctrls[NCTRLS];
+        int blocks_left;
+        const struct v4l2_pix_format *cap_mode;
+        /* 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) {
+                err("command write [%02x] error %d",
+                                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) {
+                err("read command [%02x] error %d",
+                                gspca_dev->usb_buf[0], retval);
+                gspca_dev->usb_err = retval;
+        }
+}
+
+static void setfreq(struct gspca_dev *gspca_dev)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        u8 freq_commands[][2] = {
+                {0x71, 0x80},
+                {0x70, 0x07}
+        };
+
+        freq_commands[0][1] |= (sd->ctrls[LIGHTFREQ].val >> 1);
+
+        jlj_write2(gspca_dev, freq_commands[0]);
+        jlj_write2(gspca_dev, freq_commands[1]);
+}
+
+static void setcamquality(struct gspca_dev *gspca_dev)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        u8 quality_commands[][2] = {
+                {0x71, 0x1E},
+                {0x70, 0x06}
+        };
+        u8 camquality;
+
+        /* adapt camera quality from jpeg quality */
+        camquality = ((QUALITY_MAX - sd->quality) * 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)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        u8 autogain_commands[][2] = {
+                {0x94, 0x02},
+                {0xcf, 0x00}
+        };
+
+        autogain_commands[1][1] = (sd->ctrls[AUTOGAIN].val << 4);
+
+        jlj_write2(gspca_dev, autogain_commands[0]);
+        jlj_write2(gspca_dev, autogain_commands[1]);
+}
+
+static void setred(struct gspca_dev *gspca_dev)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        u8 setred_commands[][2] = {
+                {0x94, 0x02},
+                {0xe6, 0x00}
+        };
+
+        setred_commands[1][1] = sd->ctrls[RED].val;
+
+        jlj_write2(gspca_dev, setred_commands[0]);
+        jlj_write2(gspca_dev, setred_commands[1]);
+}
+
+static void setgreen(struct gspca_dev *gspca_dev)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        u8 setgreen_commands[][2] = {
+                {0x94, 0x02},
+                {0xe7, 0x00}
+        };
+
+        setgreen_commands[1][1] = sd->ctrls[GREEN].val;
+
+        jlj_write2(gspca_dev, setgreen_commands[0]);
+        jlj_write2(gspca_dev, setgreen_commands[1]);
+}
+
+static void setblue(struct gspca_dev *gspca_dev)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        u8 setblue_commands[][2] = {
+                {0x94, 0x02},
+                {0xe9, 0x00}
+        };
+
+        setblue_commands[1][1] = sd->ctrls[BLUE].val;
+
+        jlj_write2(gspca_dev, setblue_commands[0]);
+        jlj_write2(gspca_dev, setblue_commands[1]);
+}
+
+static const struct ctrl sd_ctrls[NCTRLS] = {
+[LIGHTFREQ] = {
+            {
+                .id      = V4L2_CID_POWER_LINE_FREQUENCY,
+                .type    = V4L2_CTRL_TYPE_MENU,
+                .name    = "Light frequency filter",
+                .minimum = V4L2_CID_POWER_LINE_FREQUENCY_DISABLED, /* 1 */
+                .maximum = V4L2_CID_POWER_LINE_FREQUENCY_60HZ, /* 2 */
+                .step    = 1,
+                .default_value = V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
+            },
+            .set_control = setfreq
+        },
+[AUTOGAIN] = {
+            {
+                .id = V4L2_CID_AUTOGAIN,
+                .type = V4L2_CTRL_TYPE_INTEGER,
+                .name = "Automatic Gain (and Exposure)",
+                .minimum = 0,
+                .maximum = 3,
+                .step = 1,
+#define AUTOGAIN_DEF 0
+                .default_value = AUTOGAIN_DEF,
+           },
+           .set_control = setautogain
+        },
+[RED] = {
+            {
+                .id = V4L2_CID_RED_BALANCE,
+                .type = V4L2_CTRL_TYPE_INTEGER,
+                .name = "red balance",
+                .minimum = 0,
+                .maximum = 3,
+                .step = 1,
+#define RED_BALANCE_DEF 2
+                .default_value = RED_BALANCE_DEF,
+           },
+           .set_control = setred
+        },
+
+[GREEN] = {
+            {
+                .id = V4L2_CID_GAIN,
+                .type = V4L2_CTRL_TYPE_INTEGER,
+                .name = "green balance",
+                .minimum = 0,
+                .maximum = 3,
+                .step = 1,
+#define GREEN_BALANCE_DEF 2
+                .default_value = GREEN_BALANCE_DEF,
+           },
+           .set_control = setgreen
+        },
+[BLUE] = {
+            {
+                .id = V4L2_CID_BLUE_BALANCE,
+                .type = V4L2_CTRL_TYPE_INTEGER,
+                .name = "blue balance",
+                .minimum = 0,
+                .maximum = 3,
+                .step = 1,
+#define BLUE_BALANCE_DEF 2
+                .default_value = BLUE_BALANCE_DEF,
+           },
+           .set_control = setblue
+        },
+};
+
+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);
+        msleep(2);
+        setfreq(gspca_dev);
+        if (gspca_dev->usb_err < 0)
+                PDEBUG(D_ERR, "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;
+        gspca_dev->cam.ctrls = dev->ctrls;
+        dev->quality = QUALITY_DEF;
+        dev->ctrls[LIGHTFREQ].def = V4L2_CID_POWER_LINE_FREQUENCY_60HZ;
+        dev->ctrls[RED].def = RED_BALANCE_DEF;
+        dev->ctrls[GREEN].def = GREEN_BALANCE_DEF;
+        dev->ctrls[BLUE].def = BLUE_BALANCE_DEF;
+        PDEBUG(D_PROBE,
+                "JEILINJ camera detected"
+                " (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct);
+        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;
+        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_querymenu(struct gspca_dev *gspca_dev,
+                        struct v4l2_querymenu *menu)
+{
+        switch (menu->id) {
+        case V4L2_CID_POWER_LINE_FREQUENCY:
+                switch (menu->index) {
+                case 0: /* V4L2_CID_POWER_LINE_FREQUENCY_DISABLED */
+                        strcpy((char *) menu->name, "disable");
+                        return 0;
+                case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
+                        strcpy((char *) menu->name, "50 Hz");
+                        return 0;
+                case 2: /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
+                        strcpy((char *) menu->name, "60 Hz");
+                        return 0;
+                }
+                break;
+        }
+        return -EINVAL;
+}
+
+static int sd_set_jcomp(struct gspca_dev *gspca_dev,
+                        struct v4l2_jpegcompression *jcomp)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+
+        if (jcomp->quality < QUALITY_MIN)
+                sd->quality = QUALITY_MIN;
+        else if (jcomp->quality > QUALITY_MAX)
+                sd->quality = QUALITY_MAX;
+        else
+                sd->quality = jcomp->quality;
+        if (gspca_dev->streaming) {
+                jpeg_set_qual(sd->jpeg_hdr, sd->quality);
+                setcamquality(gspca_dev);
+        }
+        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 = sd->quality;
+        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,
+        .start  = sd_start,
+        .stopN  = sd_stopN,
+        .pkt_scan = sd_pkt_scan,
+        .ctrls = sd_ctrls,
+        .nctrls = ARRAY_SIZE(sd_ctrls),
+        .querymenu = sd_querymenu,
+        .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,
+#endif
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+        return usb_register(&sd_driver);
+}
+
+static void __exit sd_mod_exit(void)
+{
+        usb_deregister(&sd_driver);
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);