diff options
Diffstat (limited to 'linux/drivers/media/video/gspca/ov534.c')
| -rw-r--r-- | linux/drivers/media/video/gspca/ov534.c | 662 |
1 files changed, 379 insertions, 283 deletions
diff --git a/linux/drivers/media/video/gspca/ov534.c b/linux/drivers/media/video/gspca/ov534.c index a574be09b..3bf15e401 100644 --- a/linux/drivers/media/video/gspca/ov534.c +++ b/linux/drivers/media/video/gspca/ov534.c @@ -1,6 +1,7 @@ /* * 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> @@ -42,20 +43,19 @@ MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>"); MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver"); MODULE_LICENSE("GPL"); -/* global parameters */ -static int frame_rate; - /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ - __u8 frame_rate; + __u32 last_fid; + __u32 last_pts; + int frame_rate; }; /* V4L2 controls supported by the driver */ static struct ctrl sd_ctrls[] = { }; -static struct v4l2_pix_format vga_mode[] = { +static const struct v4l2_pix_format vga_mode[] = { {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE, .bytesperline = 640 * 2, .sizeimage = 640 * 480 * 2, @@ -63,80 +63,68 @@ static struct v4l2_pix_format vga_mode[] = { .priv = 0}, }; -static void ov534_reg_write(struct usb_device *udev, u16 reg, u16 val) +static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val) { - u16 data = val; + struct usb_device *udev = gspca_dev->dev; int ret; - PDEBUG(D_USBO, "reg=0x%04x, val=0%04x", reg, val); + 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, &data, 1, CTRL_TIMEOUT); + 0x0, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT); if (ret < 0) PDEBUG(D_ERR, "write failed"); } -static u16 ov534_reg_read(struct usb_device *udev, u16 reg) +static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg) { - u16 data; + 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, &data, 1, CTRL_TIMEOUT); - PDEBUG(D_USBI, "reg=0x%04x, data=0x%04x", reg, data); + 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 data; -} - -static void ov534_reg_verify_write(struct usb_device *udev, u16 reg, u16 val) -{ - u16 data; - - ov534_reg_write(udev, reg, val); - data = ov534_reg_read(udev, reg); - if (data != val) { - PDEBUG(D_ERR | D_USBO, - "unexpected result from read: 0x%04x != 0x%04x", val, - data); - } + 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 usb_device *udev, int status) +static void ov534_set_led(struct gspca_dev *gspca_dev, int status) { - u16 data; + u8 data; PDEBUG(D_CONF, "led status: %d", status); - data = ov534_reg_read(udev, 0x21); + data = ov534_reg_read(gspca_dev, 0x21); data |= 0x80; - ov534_reg_write(udev, 0x21, data); + ov534_reg_write(gspca_dev, 0x21, data); - data = ov534_reg_read(udev, 0x23); + data = ov534_reg_read(gspca_dev, 0x23); if (status) data |= 0x80; else data &= ~(0x80); - ov534_reg_write(udev, 0x23, data); + ov534_reg_write(gspca_dev, 0x23, data); } -static int sccb_check_status(struct usb_device *udev) +static int sccb_check_status(struct gspca_dev *gspca_dev) { - u16 data; + u8 data; int i; for (i = 0; i < 5; i++) { - data = ov534_reg_read(udev, OV534_REG_STATUS); + data = ov534_reg_read(gspca_dev, OV534_REG_STATUS); - switch (data & 0xFF) { + switch (data) { case 0x00: return 1; case 0x04: @@ -144,195 +132,243 @@ static int sccb_check_status(struct usb_device *udev) case 0x03: break; default: - PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5\n", + PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5", data, i + 1); } } return 0; } -static void sccb_reg_write(struct usb_device *udev, u16 reg, u16 val) +static void sccb_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val) { - PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%04x", reg, val); - ov534_reg_write(udev, OV534_REG_SUBADDR, reg); - ov534_reg_write(udev, OV534_REG_WRITE, val); - ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_3); + 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(udev)) + 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 usb_device *udev) +static void ov534_setup(struct gspca_dev *gspca_dev) { - ov534_reg_verify_write(udev, 0xe7, 0x3a); - - ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60); - ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60); - ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60); - ov534_reg_write(udev, OV534_REG_ADDRESS, 0x42); - - ov534_reg_verify_write(udev, 0xc2, 0x0c); - ov534_reg_verify_write(udev, 0x88, 0xf8); - ov534_reg_verify_write(udev, 0xc3, 0x69); - ov534_reg_verify_write(udev, 0x89, 0xff); - ov534_reg_verify_write(udev, 0x76, 0x03); - ov534_reg_verify_write(udev, 0x92, 0x01); - ov534_reg_verify_write(udev, 0x93, 0x18); - ov534_reg_verify_write(udev, 0x94, 0x10); - ov534_reg_verify_write(udev, 0x95, 0x10); - ov534_reg_verify_write(udev, 0xe2, 0x00); - ov534_reg_verify_write(udev, 0xe7, 0x3e); - - ov534_reg_write(udev, 0x1c, 0x0a); - ov534_reg_write(udev, 0x1d, 0x22); - ov534_reg_write(udev, 0x1d, 0x06); - - ov534_reg_verify_write(udev, 0x96, 0x00); - - ov534_reg_write(udev, 0x97, 0x20); - ov534_reg_write(udev, 0x97, 0x20); - ov534_reg_write(udev, 0x97, 0x20); - ov534_reg_write(udev, 0x97, 0x0a); - ov534_reg_write(udev, 0x97, 0x3f); - ov534_reg_write(udev, 0x97, 0x4a); - ov534_reg_write(udev, 0x97, 0x20); - ov534_reg_write(udev, 0x97, 0x15); - ov534_reg_write(udev, 0x97, 0x0b); - - ov534_reg_verify_write(udev, 0x8e, 0x40); - ov534_reg_verify_write(udev, 0x1f, 0x81); - ov534_reg_verify_write(udev, 0x34, 0x05); - ov534_reg_verify_write(udev, 0xe3, 0x04); - ov534_reg_verify_write(udev, 0x88, 0x00); - ov534_reg_verify_write(udev, 0x89, 0x00); - ov534_reg_verify_write(udev, 0x76, 0x00); - ov534_reg_verify_write(udev, 0xe7, 0x2e); - ov534_reg_verify_write(udev, 0x31, 0xf9); - ov534_reg_verify_write(udev, 0x25, 0x42); - ov534_reg_verify_write(udev, 0x21, 0xf0); - - ov534_reg_write(udev, 0x1c, 0x00); - ov534_reg_write(udev, 0x1d, 0x40); - ov534_reg_write(udev, 0x1d, 0x02); - ov534_reg_write(udev, 0x1d, 0x00); - ov534_reg_write(udev, 0x1d, 0x02); - ov534_reg_write(udev, 0x1d, 0x57); - ov534_reg_write(udev, 0x1d, 0xff); - - ov534_reg_verify_write(udev, 0x8d, 0x1c); - ov534_reg_verify_write(udev, 0x8e, 0x80); - ov534_reg_verify_write(udev, 0xe5, 0x04); - - ov534_set_led(udev, 1); - - sccb_reg_write(udev, 0x12, 0x80); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x11, 0x01); - - ov534_set_led(udev, 0); - - sccb_reg_write(udev, 0x3d, 0x03); - sccb_reg_write(udev, 0x17, 0x26); - sccb_reg_write(udev, 0x18, 0xa0); - sccb_reg_write(udev, 0x19, 0x07); - sccb_reg_write(udev, 0x1a, 0xf0); - sccb_reg_write(udev, 0x32, 0x00); - sccb_reg_write(udev, 0x29, 0xa0); - sccb_reg_write(udev, 0x2c, 0xf0); - sccb_reg_write(udev, 0x65, 0x20); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x42, 0x7f); - sccb_reg_write(udev, 0x63, 0xe0); - sccb_reg_write(udev, 0x64, 0xff); - sccb_reg_write(udev, 0x66, 0x00); - sccb_reg_write(udev, 0x13, 0xf0); - sccb_reg_write(udev, 0x0d, 0x41); - sccb_reg_write(udev, 0x0f, 0xc5); - sccb_reg_write(udev, 0x14, 0x11); - - ov534_set_led(udev, 1); - - sccb_reg_write(udev, 0x22, 0x7f); - sccb_reg_write(udev, 0x23, 0x03); - sccb_reg_write(udev, 0x24, 0x40); - sccb_reg_write(udev, 0x25, 0x30); - sccb_reg_write(udev, 0x26, 0xa1); - sccb_reg_write(udev, 0x2a, 0x00); - sccb_reg_write(udev, 0x2b, 0x00); - sccb_reg_write(udev, 0x6b, 0xaa); - sccb_reg_write(udev, 0x13, 0xff); - - ov534_set_led(udev, 0); - - sccb_reg_write(udev, 0x90, 0x05); - sccb_reg_write(udev, 0x91, 0x01); - sccb_reg_write(udev, 0x92, 0x03); - sccb_reg_write(udev, 0x93, 0x00); - sccb_reg_write(udev, 0x94, 0x60); - sccb_reg_write(udev, 0x95, 0x3c); - sccb_reg_write(udev, 0x96, 0x24); - sccb_reg_write(udev, 0x97, 0x1e); - sccb_reg_write(udev, 0x98, 0x62); - sccb_reg_write(udev, 0x99, 0x80); - sccb_reg_write(udev, 0x9a, 0x1e); - sccb_reg_write(udev, 0x9b, 0x08); - sccb_reg_write(udev, 0x9c, 0x20); - sccb_reg_write(udev, 0x9e, 0x81); - - ov534_set_led(udev, 1); - - sccb_reg_write(udev, 0xa6, 0x04); - sccb_reg_write(udev, 0x7e, 0x0c); - sccb_reg_write(udev, 0x7f, 0x16); - sccb_reg_write(udev, 0x80, 0x2a); - sccb_reg_write(udev, 0x81, 0x4e); - sccb_reg_write(udev, 0x82, 0x61); - sccb_reg_write(udev, 0x83, 0x6f); - sccb_reg_write(udev, 0x84, 0x7b); - sccb_reg_write(udev, 0x85, 0x86); - sccb_reg_write(udev, 0x86, 0x8e); - sccb_reg_write(udev, 0x87, 0x97); - sccb_reg_write(udev, 0x88, 0xa4); - sccb_reg_write(udev, 0x89, 0xaf); - sccb_reg_write(udev, 0x8a, 0xc5); - sccb_reg_write(udev, 0x8b, 0xd7); - sccb_reg_write(udev, 0x8c, 0xe8); - sccb_reg_write(udev, 0x8d, 0x20); - - sccb_reg_write(udev, 0x0c, 0x90); - - ov534_reg_verify_write(udev, 0xc0, 0x50); - ov534_reg_verify_write(udev, 0xc1, 0x3c); - ov534_reg_verify_write(udev, 0xc2, 0x0c); - - ov534_set_led(udev, 1); - - sccb_reg_write(udev, 0x2b, 0x00); - sccb_reg_write(udev, 0x22, 0x7f); - sccb_reg_write(udev, 0x23, 0x03); - sccb_reg_write(udev, 0x11, 0x01); - sccb_reg_write(udev, 0x0c, 0xd0); - sccb_reg_write(udev, 0x64, 0xff); - sccb_reg_write(udev, 0x0d, 0x41); - - sccb_reg_write(udev, 0x14, 0x41); - sccb_reg_write(udev, 0x0e, 0xcd); - sccb_reg_write(udev, 0xac, 0xbf); - sccb_reg_write(udev, 0x8e, 0x00); - sccb_reg_write(udev, 0x0c, 0xd0); - - ov534_reg_write(udev, 0xe0, 0x09); - ov534_set_led(udev, 0); + 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 */ @@ -347,70 +383,26 @@ static int sd_config(struct gspca_dev *gspca_dev, cam->cam_mode = vga_mode; cam->nmodes = ARRAY_SIZE(vga_mode); - cam->bulk_size = vga_mode[0].sizeimage; + cam->bulk_size = 16384; cam->bulk_nurbs = 2; - PDEBUG(D_PROBE, "bulk_size = %d", cam->bulk_size); - return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { - struct sd *sd = (struct sd *)gspca_dev; - ov534_setup(gspca_dev->dev); - - if (frame_rate > 0) - sd->frame_rate = frame_rate; - - PDEBUG(D_PROBE, "frame_rate = %d", sd->frame_rate); - - switch (sd->frame_rate) { - case 50: - sccb_reg_write(gspca_dev->dev, 0x11, 0x01); - sccb_check_status(gspca_dev->dev); - sccb_reg_write(gspca_dev->dev, 0x0d, 0x41); - sccb_check_status(gspca_dev->dev); - ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02); - break; - case 40: - sccb_reg_write(gspca_dev->dev, 0x11, 0x02); - sccb_check_status(gspca_dev->dev); - sccb_reg_write(gspca_dev->dev, 0x0d, 0xc1); - sccb_check_status(gspca_dev->dev); - ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04); - break; - case 30: - default: - sccb_reg_write(gspca_dev->dev, 0x11, 0x04); - sccb_check_status(gspca_dev->dev); - sccb_reg_write(gspca_dev->dev, 0x0d, 0x81); - sccb_check_status(gspca_dev->dev); - ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02); - break; - case 15: - sccb_reg_write(gspca_dev->dev, 0x11, 0x03); - sccb_check_status(gspca_dev->dev); - sccb_reg_write(gspca_dev->dev, 0x0d, 0x41); - sccb_check_status(gspca_dev->dev); - ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04); - break; - }; + ov534_setup(gspca_dev); + ov534_set_frame_rate(gspca_dev); return 0; } static int sd_start(struct gspca_dev *gspca_dev) { - PDEBUG(D_PROBE, "width = %d, height = %d", - gspca_dev->width, gspca_dev->height); - - gspca_dev->cam.bulk_size = gspca_dev->width * gspca_dev->height * 2; - /* start streaming data */ - ov534_set_led(gspca_dev->dev, 1); - ov534_reg_write(gspca_dev->dev, 0xe0, 0x00); + ov534_set_led(gspca_dev, 1); + ov534_reg_write(gspca_dev, 0xe0, 0x00); return 0; } @@ -418,29 +410,134 @@ static int sd_start(struct gspca_dev *gspca_dev) static void sd_stopN(struct gspca_dev *gspca_dev) { /* stop streaming data */ - ov534_reg_write(gspca_dev->dev, 0xe0, 0x09); - ov534_set_led(gspca_dev->dev, 0); + 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) { - /* - * The current camera setup doesn't stream the last pixel, so we set it - * to a dummy value - */ - __u8 last_pixel[4] = { 0, 0, 0, 0 }; - int framesize = gspca_dev->cam.bulk_size; - - if (len == framesize - 4) { - frame = - gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, len); - frame = - gspca_frame_add(gspca_dev, LAST_PACKET, frame, last_pixel, - 4); - } else - PDEBUG(D_PACK, "packet len = %d, framesize = %d", len, - framesize); + 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 */ @@ -453,6 +550,8 @@ static const struct sd_desc sd_desc = { .start = sd_start, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, + .get_streamparm = sd_get_streamparm, + .set_streamparm = sd_set_streamparm, }; /* -- module initialisation -- */ @@ -500,6 +599,3 @@ static void __exit sd_mod_exit(void) module_init(sd_mod_init); module_exit(sd_mod_exit); - -module_param(frame_rate, int, 0644); -MODULE_PARM_DESC(frame_rate, "Frame rate (15, 30, 40, 50)"); |