Message ID | 1635947547-24391-9-git-send-email-spujar@nvidia.com |
---|---|
State | Superseded |
Headers | show
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Wed, 3 Nov 2021 13:53:04 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Wed, 3 Nov 2021 13:53:03 +0000 Received: from audio.nvidia.com (172.20.187.6) by mail.nvidia.com (172.20.187.15) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Wed, 3 Nov 2021 06:53:01 -0700 From: Sameer Pujar <spujar@nvidia.com> To: <broonie@kernel.org>, <lgirdwood@gmail.com>, <perex@perex.cz>, <tiwai@suse.com> CC: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>, <alsa-devel@alsa-project.org>, <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Sameer Pujar <spujar@nvidia.com> Subject: [PATCH v2 08/10] ASoC: tegra: Fix kcontrol put callback in AMX Date: Wed, 3 Nov 2021 19:22:24 +0530 Message-ID: <1635947547-24391-9-git-send-email-spujar@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635947547-24391-1-git-send-email-spujar@nvidia.com> References: <1635947547-24391-1-git-send-email-spujar@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 528882f1-4c88-44a9-ad7f-08d99ed14286 X-MS-TrafficTypeDiagnostic: CH2PR12MB4216: X-Microsoft-Antispam-PRVS: <CH2PR12MB42169C829232AFF7C7600217A78C9@CH2PR12MB4216.namprd12.prod.outlook.com> X-MS-Oob-TLC-OOBClassifiers: OLM:5236; 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Series |
Fix kcontrol put callback in Tegra drivers
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diff --git a/sound/soc/tegra/tegra210_amx.c b/sound/soc/tegra/tegra210_amx.c index af9bddf..6895763 100644 --- a/sound/soc/tegra/tegra210_amx.c +++ b/sound/soc/tegra/tegra210_amx.c @@ -222,6 +222,9 @@ static int tegra210_amx_put_byte_map(struct snd_kcontrol *kcontrol, int reg = mc->reg; int value = ucontrol->value.integer.value[0]; + if (value == bytes_map[reg]) + return 0; + if (value >= 0 && value <= 255) { /* Update byte map and enable slot */ bytes_map[reg] = value;
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 AMX driver. Fixes: 77f7df346c45 ("ASoC: tegra: Add Tegra210 based AMX driver") Signed-off-by: Sameer Pujar <spujar@nvidia.com> Suggested-by: Jaroslav Kysela <perex@perex.cz> Suggested-by: Mark Brown <broonie@kernel.org> --- sound/soc/tegra/tegra210_amx.c | 3 +++ 1 file changed, 3 insertions(+)