1. 04 7月, 2007 1 次提交
    • T
      V4L/DVB (5808): Bttv: fix v4l1 breaking the driver · 333408f2
      Trent Piepho 提交于
      If one uses a V4L *one* application, such as vlc or mplayer's v4l driver, as
      the first user after the driver is loaded, the driver wedges itself and will
      never capture properly.  Even if one uses a V4L2 application later, it still
      won't work.
      
      If one uses a V4L *two* application first, such as tvtime or mplayer's v4l2
      driver, then the driver will be ok.  One can then run a V4L1 application, and
      it will work.
      
      It turns out the problem is with norm changing and the crop support that was
      added in 2.6.21.  The driver defaults to PAL, and keeps the last norm it was
      set too across opens.  If one changes the norm via V4L1, the cropping
      parameters are not reset like they should be, and they'll remain broken across
      device opens.
      
      This patch removes the direct setting of btv->tvnorm in the V4L1 ioctl
      VIDIOCSCHAN handler.  The norm is set via the existing call to set_input(),
      which calls set_tvnorm(), which will reset the cropping values now that it is
      able to detect the norm change.
      Signed-off-by: NTrent Piepho <xyzzy@speakeasy.org>
      Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
      Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
      333408f2
  2. 03 7月, 2007 17 次提交
  3. 02 7月, 2007 22 次提交