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Commit 9fc7c862 authored by Subhransu S. Prusty's avatar Subhransu S. Prusty Committed by Mark Brown
Browse files

ALSA: hda - add helper to get channels from cap bits 



This helper is copied from legacy hda driver.

Signed-off-by: default avatarSubhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
Acked-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f55532a0

sound/hda/local.h

+10 −0
Original line number Diff line number Diff line
@@ -16,6 +16,16 @@ static inline int get_wcaps_type(unsigned int wcaps) 
	return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;

}



static inline unsigned int get_wcaps_channels(u32 wcaps)

{

	unsigned int chans;



	chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;

	chans = (chans + 1) * 2;



	return chans;

}



extern const struct attribute_group *hdac_dev_attr_groups[];

int hda_widget_sysfs_init(struct hdac_device *codec);

void hda_widget_sysfs_exit(struct hdac_device *codec);