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path: root/drivers/media/video/gspca/ov534.c
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Diffstat (limited to 'drivers/media/video/gspca/ov534.c')
-rw-r--r--drivers/media/video/gspca/ov534.c601
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 00000000000..3bf15e40169
--- /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);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-01 00:35:46 +0000