diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-06-29 11:35:05 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-07-05 14:30:05 -0300 |
| commit | 02e7804b2135ff941b8846f5820cf48fbfdadd54 (patch) | |
| tree | 58d3e596946d4c6b1bae23465f5d9b80e893d300 /drivers/media/video/em28xx/em28xx-core.c | |
| parent | 6934e6fface7b7d5fe7e578c3f43cbe8f23af2d4 (diff) | |
V4L/DVB (12138): em28xx: add support for Silvercrest Webcam
This webcam uses a em2710 chipset, that identifies itself as em2820,
plus a mt9v011 sensor, and a DY-301P lens.
It needs a few different initializations than a normal em28xx device.
Thanks to Hans de Goede <hdegoede@redhat.com> and Douglas Landgraf
<dougsland@redhat.com> for providing the acces for the webcam during
this weekend, I could make a patch for it while returning back from
FISL/Fudcom LATAM 2009.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-core.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-core.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index c8d7ce8fbd3..dda2721ee5b 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -648,17 +648,29 @@ int em28xx_capture_start(struct em28xx *dev, int start) int em28xx_set_outfmt(struct em28xx *dev) { int ret; + int vinmode, vinctl, outfmt; + + outfmt = dev->format->reg; + + if (dev->board.is_27xx) { + vinmode = 0x0d; + vinctl = 0x00; + outfmt = 0x24; + } else { + vinmode = 0x10; + vinctl = 0x11; + } ret = em28xx_write_reg_bits(dev, EM28XX_R27_OUTFMT, - dev->format->reg | 0x20, 0x3f); + outfmt | 0x20, 0xff); if (ret < 0) - return ret; + return ret; - ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, 0x10); + ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, vinmode); if (ret < 0) return ret; - return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x11); + return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, vinctl); } static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, @@ -695,13 +707,19 @@ static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) { u8 mode; /* the em2800 scaler only supports scaling down to 50% */ - if (dev->board.is_em2800) + + if (dev->board.is_27xx) { + /* FIXME: Don't use the scaler yet */ + mode = 0; + } else if (dev->board.is_em2800) { mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00); - else { + } else { u8 buf[2]; + buf[0] = h; buf[1] = h >> 8; em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2); + buf[0] = v; buf[1] = v >> 8; em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2); @@ -720,8 +738,11 @@ int em28xx_resolution_set(struct em28xx *dev) height = norm_maxh(dev) >> 1; em28xx_set_outfmt(dev); + + em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2); em28xx_capture_area_set(dev, 0, 0, width >> 2, height >> 2); + return em28xx_scaler_set(dev, dev->hscale, dev->vscale); } |