1 files changed, 601 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/ov534.c b/drivers/media/video/gspca/ov534.c
new file mode 100644
index 000000000000..3bf15e401693
--- /dev/null
+++ b/drivers/media/video/gspca/ov534.c
@@ -0,0 +1,601 @@
+/*
+ * ov534/ov772x gspca driver
+ * Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
+ * Copyright (C) 2008 Jim Paris <jim@jtan.com>
+ *
+ * Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
+ * USB protocol reverse engineered by Jim Paris <jim@jtan.com>
+ * https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
+ *
+ * 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 "ov534"
+
+#include "gspca.h"
+
+#define OV534_REG_ADDRESS       0xf1    /* ? */
+#define OV534_REG_SUBADDR       0xf2
+#define OV534_REG_WRITE         0xf3
+#define OV534_REG_READ          0xf4
+#define OV534_REG_OPERATION     0xf5
+#define OV534_REG_STATUS        0xf6
+
+#define OV534_OP_WRITE_3        0x37
+#define OV534_OP_WRITE_2        0x33
+#define OV534_OP_READ_2         0xf9
+
+#define CTRL_TIMEOUT 500
+
+MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
+MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* specific webcam descriptor */
+struct sd {
+        struct gspca_dev gspca_dev;     /* !! must be the first item */
+        __u32 last_fid;
+        __u32 last_pts;
+        int frame_rate;
+};
+
+/* V4L2 controls supported by the driver */
+static struct ctrl sd_ctrls[] = {
+};
+
+static const struct v4l2_pix_format vga_mode[] = {
+        {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
+         .bytesperline = 640 * 2,
+         .sizeimage = 640 * 480 * 2,
+         .colorspace = V4L2_COLORSPACE_JPEG,
+         .priv = 0},
+};
+
+static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
+{
+        struct usb_device *udev = gspca_dev->dev;
+        int ret;
+
+        PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
+        gspca_dev->usb_buf[0] = val;
+        ret = usb_control_msg(udev,
+                              usb_sndctrlpipe(udev, 0),
+                              0x1,
+                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                              0x0, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
+        if (ret < 0)
+                PDEBUG(D_ERR, "write failed");
+}
+
+static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
+{
+        struct usb_device *udev = gspca_dev->dev;
+        int ret;
+
+        ret = usb_control_msg(udev,
+                              usb_rcvctrlpipe(udev, 0),
+                              0x1,
+                              USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                              0x0, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
+        PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, gspca_dev->usb_buf[0]);
+        if (ret < 0)
+                PDEBUG(D_ERR, "read failed");
+        return gspca_dev->usb_buf[0];
+}
+
+/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
+ * (direction and output)? */
+static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
+{
+        u8 data;
+
+        PDEBUG(D_CONF, "led status: %d", status);
+
+        data = ov534_reg_read(gspca_dev, 0x21);
+        data |= 0x80;
+        ov534_reg_write(gspca_dev, 0x21, data);
+
+        data = ov534_reg_read(gspca_dev, 0x23);
+        if (status)
+                data |= 0x80;
+        else
+                data &= ~(0x80);
+
+        ov534_reg_write(gspca_dev, 0x23, data);
+}
+
+static int sccb_check_status(struct gspca_dev *gspca_dev)
+{
+        u8 data;
+        int i;
+
+        for (i = 0; i < 5; i++) {
+                data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
+
+                switch (data) {
+                case 0x00:
+                        return 1;
+                case 0x04:
+                        return 0;
+                case 0x03:
+                        break;
+                default:
+                        PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5",
+                               data, i + 1);
+                }
+        }
+        return 0;
+}
+
+static void sccb_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
+{
+        PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%02x", reg, val);
+        ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
+        ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
+        ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
+
+        if (!sccb_check_status(gspca_dev))
+                PDEBUG(D_ERR, "sccb_reg_write failed");
+}
+
+#ifdef GSPCA_DEBUG
+static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
+{
+        ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
+        ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
+        if (!sccb_check_status(gspca_dev))
+                PDEBUG(D_ERR, "sccb_reg_read failed 1");
+
+        ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
+        if (!sccb_check_status(gspca_dev))
+                PDEBUG(D_ERR, "sccb_reg_read failed 2");
+
+        return ov534_reg_read(gspca_dev, OV534_REG_READ);
+}
+#endif
+
+static const __u8 ov534_reg_initdata[][2] = {
+        { 0xe7, 0x3a },
+
+        { OV534_REG_ADDRESS, 0x42 }, /* select OV772x sensor */
+
+        { 0xc2, 0x0c },
+        { 0x88, 0xf8 },
+        { 0xc3, 0x69 },
+        { 0x89, 0xff },
+        { 0x76, 0x03 },
+        { 0x92, 0x01 },
+        { 0x93, 0x18 },
+        { 0x94, 0x10 },
+        { 0x95, 0x10 },
+        { 0xe2, 0x00 },
+        { 0xe7, 0x3e },
+
+        { 0x96, 0x00 },
+
+        { 0x97, 0x20 },
+        { 0x97, 0x20 },
+        { 0x97, 0x20 },
+        { 0x97, 0x0a },
+        { 0x97, 0x3f },
+        { 0x97, 0x4a },
+        { 0x97, 0x20 },
+        { 0x97, 0x15 },
+        { 0x97, 0x0b },
+
+        { 0x8e, 0x40 },
+        { 0x1f, 0x81 },
+        { 0x34, 0x05 },
+        { 0xe3, 0x04 },
+        { 0x88, 0x00 },
+        { 0x89, 0x00 },
+        { 0x76, 0x00 },
+        { 0xe7, 0x2e },
+        { 0x31, 0xf9 },
+        { 0x25, 0x42 },
+        { 0x21, 0xf0 },
+
+        { 0x1c, 0x00 },
+        { 0x1d, 0x40 },
+        { 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
+        { 0x1d, 0x00 }, /* payload size */
+        { 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
+        { 0x1d, 0x58 }, /* frame size */
+        { 0x1d, 0x00 }, /* frame size */
+
+        { 0x1c, 0x0a },
+        { 0x1d, 0x08 }, /* turn on UVC header */
+        { 0x1d, 0x0e }, /* .. */
+
+        { 0x8d, 0x1c },
+        { 0x8e, 0x80 },
+        { 0xe5, 0x04 },
+
+        { 0xc0, 0x50 },
+        { 0xc1, 0x3c },
+        { 0xc2, 0x0c },
+};
+
+static const __u8 ov772x_reg_initdata[][2] = {
+        { 0x12, 0x80 },
+        { 0x11, 0x01 },
+
+        { 0x3d, 0x03 },
+        { 0x17, 0x26 },
+        { 0x18, 0xa0 },
+        { 0x19, 0x07 },
+        { 0x1a, 0xf0 },
+        { 0x32, 0x00 },
+        { 0x29, 0xa0 },
+        { 0x2c, 0xf0 },
+        { 0x65, 0x20 },
+        { 0x11, 0x01 },
+        { 0x42, 0x7f },
+        { 0x63, 0xe0 },
+        { 0x64, 0xff },
+        { 0x66, 0x00 },
+        { 0x13, 0xf0 },
+        { 0x0d, 0x41 },
+        { 0x0f, 0xc5 },
+        { 0x14, 0x11 },
+
+        { 0x22, 0x7f },
+        { 0x23, 0x03 },
+        { 0x24, 0x40 },
+        { 0x25, 0x30 },
+        { 0x26, 0xa1 },
+        { 0x2a, 0x00 },
+        { 0x2b, 0x00 },
+        { 0x6b, 0xaa },
+        { 0x13, 0xff },
+
+        { 0x90, 0x05 },
+        { 0x91, 0x01 },
+        { 0x92, 0x03 },
+        { 0x93, 0x00 },
+        { 0x94, 0x60 },
+        { 0x95, 0x3c },
+        { 0x96, 0x24 },
+        { 0x97, 0x1e },
+        { 0x98, 0x62 },
+        { 0x99, 0x80 },
+        { 0x9a, 0x1e },
+        { 0x9b, 0x08 },
+        { 0x9c, 0x20 },
+        { 0x9e, 0x81 },
+
+        { 0xa6, 0x04 },
+        { 0x7e, 0x0c },
+        { 0x7f, 0x16 },
+        { 0x80, 0x2a },
+        { 0x81, 0x4e },
+        { 0x82, 0x61 },
+        { 0x83, 0x6f },
+        { 0x84, 0x7b },
+        { 0x85, 0x86 },
+        { 0x86, 0x8e },
+        { 0x87, 0x97 },
+        { 0x88, 0xa4 },
+        { 0x89, 0xaf },
+        { 0x8a, 0xc5 },
+        { 0x8b, 0xd7 },
+        { 0x8c, 0xe8 },
+        { 0x8d, 0x20 },
+
+        { 0x0c, 0x90 },
+
+        { 0x2b, 0x00 },
+        { 0x22, 0x7f },
+        { 0x23, 0x03 },
+        { 0x11, 0x01 },
+        { 0x0c, 0xd0 },
+        { 0x64, 0xff },
+        { 0x0d, 0x41 },
+
+        { 0x14, 0x41 },
+        { 0x0e, 0xcd },
+        { 0xac, 0xbf },
+        { 0x8e, 0x00 },
+        { 0x0c, 0xd0 }
+};
+
+/* set framerate */
+static void ov534_set_frame_rate(struct gspca_dev *gspca_dev)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        int fr = sd->frame_rate;
+
+        switch (fr) {
+        case 50:
+                sccb_reg_write(gspca_dev, 0x11, 0x01);
+                sccb_reg_write(gspca_dev, 0x0d, 0x41);
+                ov534_reg_write(gspca_dev, 0xe5, 0x02);
+                break;
+        case 40:
+                sccb_reg_write(gspca_dev, 0x11, 0x02);
+                sccb_reg_write(gspca_dev, 0x0d, 0xc1);
+                ov534_reg_write(gspca_dev, 0xe5, 0x04);
+                break;
+/*      case 30: */
+        default:
+                fr = 30;
+                sccb_reg_write(gspca_dev, 0x11, 0x04);
+                sccb_reg_write(gspca_dev, 0x0d, 0x81);
+                ov534_reg_write(gspca_dev, 0xe5, 0x02);
+                break;
+        case 15:
+                sccb_reg_write(gspca_dev, 0x11, 0x03);
+                sccb_reg_write(gspca_dev, 0x0d, 0x41);
+                ov534_reg_write(gspca_dev, 0xe5, 0x04);
+                break;
+        }
+
+        sd->frame_rate = fr;
+        PDEBUG(D_PROBE, "frame_rate: %d", fr);
+}
+
+/* setup method */
+static void ov534_setup(struct gspca_dev *gspca_dev)
+{
+        int i;
+
+        /* Initialize bridge chip */
+        for (i = 0; i < ARRAY_SIZE(ov534_reg_initdata); i++)
+                ov534_reg_write(gspca_dev, ov534_reg_initdata[i][0],
+                                ov534_reg_initdata[i][1]);
+
+        PDEBUG(D_PROBE, "sensor is ov%02x%02x",
+                sccb_reg_read(gspca_dev, 0x0a),
+                sccb_reg_read(gspca_dev, 0x0b));
+
+        ov534_set_led(gspca_dev, 1);
+
+        /* Initialize sensor */
+        for (i = 0; i < ARRAY_SIZE(ov772x_reg_initdata); i++)
+                sccb_reg_write(gspca_dev, ov772x_reg_initdata[i][0],
+                               ov772x_reg_initdata[i][1]);
+
+        ov534_reg_write(gspca_dev, 0xe0, 0x09);
+        ov534_set_led(gspca_dev, 0);
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+                     const struct usb_device_id *id)
+{
+        struct cam *cam;
+
+        cam = &gspca_dev->cam;
+
+        cam->epaddr = 0x01;
+        cam->cam_mode = vga_mode;
+        cam->nmodes = ARRAY_SIZE(vga_mode);
+
+        cam->bulk_size = 16384;
+        cam->bulk_nurbs = 2;
+
+        return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+        ov534_setup(gspca_dev);
+        ov534_set_frame_rate(gspca_dev);
+
+        return 0;
+}
+
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+        /* start streaming data */
+        ov534_set_led(gspca_dev, 1);
+        ov534_reg_write(gspca_dev, 0xe0, 0x00);
+
+        return 0;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+        /* stop streaming data */
+        ov534_reg_write(gspca_dev, 0xe0, 0x09);
+        ov534_set_led(gspca_dev, 0);
+}
+
+/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
+#define UVC_STREAM_EOH  (1 << 7)
+#define UVC_STREAM_ERR  (1 << 6)
+#define UVC_STREAM_STI  (1 << 5)
+#define UVC_STREAM_RES  (1 << 4)
+#define UVC_STREAM_SCR  (1 << 3)
+#define UVC_STREAM_PTS  (1 << 2)
+#define UVC_STREAM_EOF  (1 << 1)
+#define UVC_STREAM_FID  (1 << 0)
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev, struct gspca_frame *frame,
+                        __u8 *data, int len)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        __u32 this_pts;
+        int this_fid;
+        int remaining_len = len;
+        __u8 *next_data = data;
+
+scan_next:
+        if (remaining_len <= 0)
+                return;
+
+        data = next_data;
+        len = min(remaining_len, 2048);
+        remaining_len -= len;
+        next_data += len;
+
+        /* Payloads are prefixed with a UVC-style header.  We
+           consider a frame to start when the FID toggles, or the PTS
+           changes.  A frame ends when EOF is set, and we've received
+           the correct number of bytes. */
+
+        /* Verify UVC header.  Header length is always 12 */
+        if (data[0] != 12 || len < 12) {
+                PDEBUG(D_PACK, "bad header");
+                goto discard;
+        }
+
+        /* Check errors */
+        if (data[1] & UVC_STREAM_ERR) {
+                PDEBUG(D_PACK, "payload error");
+                goto discard;
+        }
+
+        /* Extract PTS and FID */
+        if (!(data[1] & UVC_STREAM_PTS)) {
+                PDEBUG(D_PACK, "PTS not present");
+                goto discard;
+        }
+        this_pts = (data[5] << 24) | (data[4] << 16) | (data[3] << 8) | data[2];
+        this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
+
+        /* If PTS or FID has changed, start a new frame. */
+        if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
+                gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0);
+                sd->last_pts = this_pts;
+                sd->last_fid = this_fid;
+        }
+
+        /* Add the data from this payload */
+        gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+                                data + 12, len - 12);
+
+        /* If this packet is marked as EOF, end the frame */
+        if (data[1] & UVC_STREAM_EOF) {
+                sd->last_pts = 0;
+
+                if ((frame->data_end - frame->data) !=
+                    (gspca_dev->width * gspca_dev->height * 2)) {
+                        PDEBUG(D_PACK, "short frame");
+                        goto discard;
+                }
+
+                gspca_frame_add(gspca_dev, LAST_PACKET, frame, NULL, 0);
+        }
+
+        /* Done this payload */
+        goto scan_next;
+
+discard:
+        /* Discard data until a new frame starts. */
+        gspca_frame_add(gspca_dev, DISCARD_PACKET, frame, NULL, 0);
+        goto scan_next;
+}
+
+/* get stream parameters (framerate) */
+static int sd_get_streamparm(struct gspca_dev *gspca_dev,
+                             struct v4l2_streamparm *parm)
+{
+        struct v4l2_captureparm *cp = &parm->parm.capture;
+        struct v4l2_fract *tpf = &cp->timeperframe;
+        struct sd *sd = (struct sd *) gspca_dev;
+
+        if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        cp->capability |= V4L2_CAP_TIMEPERFRAME;
+        tpf->numerator = 1;
+        tpf->denominator = sd->frame_rate;
+
+        return 0;
+}
+
+/* set stream parameters (framerate) */
+static int sd_set_streamparm(struct gspca_dev *gspca_dev,
+                             struct v4l2_streamparm *parm)
+{
+        struct v4l2_captureparm *cp = &parm->parm.capture;
+        struct v4l2_fract *tpf = &cp->timeperframe;
+        struct sd *sd = (struct sd *) gspca_dev;
+
+        if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        /* Set requested framerate */
+        sd->frame_rate = tpf->denominator / tpf->numerator;
+        ov534_set_frame_rate(gspca_dev);
+
+        /* Return the actual framerate */
+        tpf->numerator = 1;
+        tpf->denominator = sd->frame_rate;
+
+        return 0;
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+        .name     = MODULE_NAME,
+        .ctrls    = sd_ctrls,
+        .nctrls   = ARRAY_SIZE(sd_ctrls),
+        .config   = sd_config,
+        .init     = sd_init,
+        .start    = sd_start,
+        .stopN    = sd_stopN,
+        .pkt_scan = sd_pkt_scan,
+        .get_streamparm = sd_get_streamparm,
+        .set_streamparm = sd_set_streamparm,
+};
+
+/* -- module initialisation -- */
+static const __devinitdata struct usb_device_id device_table[] = {
+        {USB_DEVICE(0x06f8, 0x3002)},   /* Hercules Blog Webcam */
+        {USB_DEVICE(0x06f8, 0x3003)},   /* Hercules Dualpix HD Weblog */
+        {USB_DEVICE(0x1415, 0x2000)},   /* Sony HD Eye for PS3 (SLEH 00201) */
+        {}
+};
+
+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,
+#endif
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+        if (usb_register(&sd_driver) < 0)
+                return -1;
+        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);