Unverified Commit 3c97881b authored by Sameer Pujar's avatar Sameer Pujar Committed by Mark Brown
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ASoC: tegra: Fix kcontrol put callback in ADX 



The kcontrol put callback is expected to return 1 when there is change
in HW or when the update is acknowledged by driver. This would ensure
that change notifications are sent to subscribed applications. Filter
out duplicate updates in ADX driver.

Fixes: a99ab6f3 ("ASoC: tegra: Add Tegra210 based ADX driver")
Signed-off-by: default avatarSameer Pujar <spujar@nvidia.com>
Suggested-by: default avatarJaroslav Kysela <perex@perex.cz>
Suggested-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarTakashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/1637219231-406-16-git-send-email-spujar@nvidia.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 8db78ace

sound/soc/tegra/tegra210_adx.c

+3 −0
Original line number Diff line number Diff line
@@ -193,6 +193,9 @@ static int tegra210_adx_put_byte_map(struct snd_kcontrol *kcontrol, 
	struct soc_mixer_control *mc =

		(struct soc_mixer_control *)kcontrol->private_value;;



	if (value == bytes_map[mc->reg])

		return 0;



	if (value >= 0 && value <= 255) {

		/* update byte map and enable slot */

		bytes_map[mc->reg] = value;