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This is required by Tegra ASoC machine driver. Signed-off-by: Sameer Pujar --- sound/soc/soc-utils.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c index 11607c5f5d5a..9c746e4edef7 100644 --- a/sound/soc/soc-utils.c +++ b/sound/soc/soc-utils.c @@ -217,6 +217,7 @@ int snd_soc_dai_is_dummy(struct snd_soc_dai *dai) return 1; return 0; } +EXPORT_SYMBOL_GPL(snd_soc_dai_is_dummy); int snd_soc_component_is_dummy(struct snd_soc_component *component) { From patchwork Thu Sep 7 06:52:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sameer Pujar X-Patchwork-Id: 1830966 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256 header.s=selector2 header.b=Q9Rsa7nD; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; 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Wed, 6 Sep 2023 23:53:02 -0700 From: Sameer Pujar To: , , , CC: , , , , , , Subject: [PATCH 2/2] ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates Date: Thu, 7 Sep 2023 12:22:13 +0530 Message-ID: <1694069533-7832-3-git-send-email-spujar@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1694069533-7832-1-git-send-email-spujar@nvidia.com> References: <1694069533-7832-1-git-send-email-spujar@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000FCC4:EE_|SJ0PR12MB5453:EE_ X-MS-Office365-Filtering-Correlation-Id: e0078b4a-b27d-4d27-2cbf-08dbaf6f1d41 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(346002)(39860400002)(376002)(136003)(396003)(451199024)(186009)(1800799009)(82310400011)(46966006)(36840700001)(40470700004)(478600001)(70206006)(40480700001)(70586007)(316002)(15650500001)(110136005)(54906003)(83380400001)(8676002)(2906002)(8936002)(41300700001)(4326008)(5660300002)(6666004)(7696005)(40460700003)(2616005)(26005)(36860700001)(336012)(426003)(356005)(36756003)(7636003)(82740400003)(86362001)(47076005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2023 06:53:16.8848 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e0078b4a-b27d-4d27-2cbf-08dbaf6f1d41 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000FCC4.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB5453 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Tegra audio graph card has many DAI links which connects internal AHUB modules and external audio codecs. Since these are DPCM links, hw_params() call in the machine driver happens for each connected BE link and PLLA is updated every time. This is not really needed for all links as only I/O link DAIs derive respective clocks from PLLA_OUT0 and thus from PLLA. Hence add checks to limit the clock updates to DAIs over I/O links. Fixes: 202e2f774543 ("ASoC: tegra: Add audio graph based card driver") Cc: stable@vger.kernel.org Signed-off-by: Sameer Pujar --- sound/soc/tegra/tegra_audio_graph_card.c | 30 ++++++++++++++---------- 1 file changed, 17 insertions(+), 13 deletions(-) diff --git a/sound/soc/tegra/tegra_audio_graph_card.c b/sound/soc/tegra/tegra_audio_graph_card.c index 1f2c5018bf5a..4737e776d383 100644 --- a/sound/soc/tegra/tegra_audio_graph_card.c +++ b/sound/soc/tegra/tegra_audio_graph_card.c @@ -10,6 +10,7 @@ #include #include #include +#include #define MAX_PLLA_OUT0_DIV 128 @@ -44,6 +45,21 @@ struct tegra_audio_cdata { unsigned int plla_out0_rates[NUM_RATE_TYPE]; }; +static bool need_clk_update(struct snd_soc_dai *dai) +{ + if (snd_soc_dai_is_dummy(dai) || + !dai->driver->ops || + !dai->driver->name) + return false; + + if (strstr(dai->driver->name, "I2S") || + strstr(dai->driver->name, "DMIC") || + strstr(dai->driver->name, "DSPK")) + return true; + + return false; +} + /* Setup PLL clock as per the given sample rate */ static int tegra_audio_graph_update_pll(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) @@ -140,19 +156,7 @@ static int tegra_audio_graph_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); int err; - /* - * This gets called for each DAI link (FE or BE) when DPCM is used. - * We may not want to update PLLA rate for each call. So PLLA update - * must be restricted to external I/O links (I2S, DMIC or DSPK) since - * they actually depend on it. I/O modules update their clocks in - * hw_param() of their respective component driver and PLLA rate - * update here helps them to derive appropriate rates. - * - * TODO: When more HW accelerators get added (like sample rate - * converter, volume gain controller etc., which don't really - * depend on PLLA) we need a better way to filter here. - */ - if (cpu_dai->driver->ops && rtd->dai_link->no_pcm) { + if (need_clk_update(cpu_dai)) { err = tegra_audio_graph_update_pll(substream, params); if (err) return err;