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    ALSA: intelhdmi - add channel mapping for typical configurations · b14224bb
    Wu Fengguang 提交于
    IbexPeak is the first Intel HDMI audio codec to support channel mapping.
    
    Currently the outstanding problem is, the HDMI channel order do not
    agree with that of ALSA.  This patch presents workaround for some
    typical use cases. It gives priority to the typical ALSA surround
    configurations, and defines channel mapping for them.
    
    We may need better kernel+userspace interactive channel mapping scheme.
    For example, in current scheme if user plays with the surround50 device,
    the kernel is unaware of this and will still select the surround41
    channel allocation and channel mapping..
    
    Thanks to Marcin for offering good tips!
    Signed-off-by: NWu Fengguang <fengguang.wu@intel.com>
    Signed-off-by: NTakashi Iwai <tiwai@suse.de>
    b14224bb
patch_intelhdmi.c 27.7 KB