diff options
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-core.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-core.c | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c index aaedd11791f2..a802128ce9c5 100644 --- a/drivers/media/usb/em28xx/em28xx-core.c +++ b/drivers/media/usb/em28xx/em28xx-core.c @@ -607,12 +607,12 @@ EXPORT_SYMBOL_GPL(em28xx_audio_setup); int em28xx_colorlevels_set_default(struct em28xx *dev) { - em28xx_write_reg(dev, EM28XX_R20_YGAIN, 0x10); /* contrast */ - em28xx_write_reg(dev, EM28XX_R21_YOFFSET, 0x00); /* brightness */ - em28xx_write_reg(dev, EM28XX_R22_UVGAIN, 0x10); /* saturation */ - em28xx_write_reg(dev, EM28XX_R23_UOFFSET, 0x00); - em28xx_write_reg(dev, EM28XX_R24_VOFFSET, 0x00); - em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, 0x00); + em28xx_write_reg(dev, EM28XX_R20_YGAIN, CONTRAST_DEFAULT); + em28xx_write_reg(dev, EM28XX_R21_YOFFSET, BRIGHTNESS_DEFAULT); + em28xx_write_reg(dev, EM28XX_R22_UVGAIN, SATURATION_DEFAULT); + em28xx_write_reg(dev, EM28XX_R23_UOFFSET, BLUE_BALANCE_DEFAULT); + em28xx_write_reg(dev, EM28XX_R24_VOFFSET, RED_BALANCE_DEFAULT); + em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, SHARPNESS_DEFAULT); em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20); em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20); @@ -681,6 +681,11 @@ int em28xx_vbi_supported(struct em28xx *dev) if (disable_vbi == 1) return 0; + if (dev->board.is_webcam) + return 0; + + /* FIXME: check subdevices for VBI support */ + if (dev->chip_id == CHIP_ID_EM2860 || dev->chip_id == CHIP_ID_EM2883) return 1; @@ -692,12 +697,23 @@ int em28xx_vbi_supported(struct em28xx *dev) int em28xx_set_outfmt(struct em28xx *dev) { int ret; - u8 vinctrl; - - ret = em28xx_write_reg_bits(dev, EM28XX_R27_OUTFMT, - dev->format->reg | 0x20, 0xff); + u8 fmt, vinctrl; + + fmt = dev->format->reg; + if (!dev->is_em25xx) + fmt |= 0x20; + /* + * NOTE: it's not clear if this is really needed ! + * The datasheets say bit 5 is a reserved bit and devices seem to work + * fine without it. But the Windows driver sets it for em2710/50+em28xx + * devices and we've always been setting it, too. + * + * em2765 (em25xx, em276x/7x/8x) devices do NOT work with this bit set, + * it's likely used for an additional (compressed ?) format there. + */ + ret = em28xx_write_reg(dev, EM28XX_R27_OUTFMT, fmt); if (ret < 0) - return ret; + return ret; ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, dev->vinmode); if (ret < 0) @@ -751,6 +767,13 @@ static void em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart, em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1); em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1); em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1); + + /* FIXME: function/meaning of these registers ? */ + /* FIXME: align width+height to multiples of 4 ?! */ + if (dev->is_em25xx) { + em28xx_write_reg(dev, 0x34, width >> 4); + em28xx_write_reg(dev, 0x35, height >> 4); + } } static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) |