From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CY7PR03CU001.outbound.protection.outlook.com (mail-westcentralusazon11010068.outbound.protection.outlook.com [40.93.198.68]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CEF6E32720D; Tue, 28 Apr 2026 16:29:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.198.68 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777393777; cv=fail; b=f0dzrnojY+Gp9ciGxfk11QBaEAaZHYBlr8vESfKg4PXOghUf149isM9vZ5xBSL88EKq01VVNJmeI3I+799LvAQhUjY18oba96xAyW4ye3K5q/nPA7BiDoqtTwShGrwtJXnPufBa7dJQzh463DbbD9n2NuCHDD9MdkZsgk7llZ6g= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777393777; c=relaxed/simple; bh=W+gRmIXT/omriVAFrpLc7OCE3WdtcpSi6mTuZikGUqY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=YxBxf2SJL0CG+ts1YNoT/T/FkzL3qjZFL5zOdCc9lQbOw2uUGxAXcIT4jbZVNhThFp+3mz50F3f0Euxo7D0VktRf737e2Gfcc854nCjD6FmRV12EhawdCJ6wXuXEXmz2yIDNq7fkw9FCbKlGw11RBJk0KDXodfeF1MY0K//EdtM= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=pExyUwFu; arc=fail smtp.client-ip=40.93.198.68 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="pExyUwFu" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=fByYUMsJEjJEWL49oX+J9SysbA0k9lmAJI3fBvKSZYZHqbQr/5GbtxIknWuQlueT7gRtE5kLFQZWfpm9jJWutf9qVwoQIU5MagEFSwi5hPqDBUAmZTzRSeV8D/XhRJI0V+dPtKIj1hZi68hBWjihGtVw17+xp/9s1JBoqeV0yCkByAZc0flhzlzMgrMms42FJaEUf3kb0Abky5hS0CC4/n/IRsYgBK382ZRCKTiq1P1ldVQbUdtSsKKpvIpigskTciKb6uOXMVlrmbbKsQ0hd/6g6MVAdZuo8vQ/yMrjvEZBUIhArloForfwPV/JgY0P0lcfvdA/okAYCDwvQ/feig== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=oDr0ynKW1U098rEvtQQ63VA1ZUIRX58Hg2vpYRCNabU=; b=iLB1tTHH35+3jCJLoe4bULv80WqMN/q0elj0xzlFO0toScgtHOUhUyKuLJYTY3g6LOMKvzaw+bNvfpQLVOsWGyAyGvnK0qxhszwOKNw65z3xxtuRkdCnQmacCCoe8x13zteXOeOSImn1SmWqttNgfdvz/eWJnVf5sJSpPauuaJDi/cVBqbnaMd878DMqul20te1ZFaGArChPUSm9/RnDyjMBVrwYb+xznDfkePUUvUUsfti8IUq8A7wOFJRuvTMuE3uQzz1mJyJk59B9N2ARC3UCdKEzNM5k6mJK0pWEmbPJU5u1YSR36oOiMOTVPhc18SChw6d9BPanyCsWoCrqCg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 198.47.21.195) smtp.rcpttodomain=linux.dev smtp.mailfrom=ti.com; dmarc=pass (p=quarantine sp=none pct=100) action=none header.from=ti.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=oDr0ynKW1U098rEvtQQ63VA1ZUIRX58Hg2vpYRCNabU=; b=pExyUwFuutXTrb+At334s1DfaQmBATTpqEEYxPMNJ6j/rmpenF7T2tAm+flaWSOVZzkv9FGWQ245Uhge2CoBW/G219vpIotGjgCd0gCDPoq0iALuJ4Uxw8ZaipSljZ+65PDPlfqJ2Trq9jLz0t+nRqCN9hcFZtvPqk1gbVtUqFo= Received: from SA1PR02CA0022.namprd02.prod.outlook.com (2603:10b6:806:2cf::29) by PH5PR10MB997735.namprd10.prod.outlook.com (2603:10b6:510:34d::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9846.27; Tue, 28 Apr 2026 16:29:32 +0000 Received: from SN1PEPF000252A1.namprd05.prod.outlook.com (2603:10b6:806:2cf:cafe::75) by SA1PR02CA0022.outlook.office365.com (2603:10b6:806:2cf::29) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9846.28 via Frontend Transport; Tue, 28 Apr 2026 16:29:32 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 198.47.21.195) smtp.mailfrom=ti.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=ti.com; Received-SPF: Pass (protection.outlook.com: domain of ti.com designates 198.47.21.195 as permitted sender) receiver=protection.outlook.com; client-ip=198.47.21.195; helo=flwvzet201.ext.ti.com; pr=C Received: from flwvzet201.ext.ti.com (198.47.21.195) by SN1PEPF000252A1.mail.protection.outlook.com (10.167.242.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9846.18 via Frontend Transport; Tue, 28 Apr 2026 16:29:30 +0000 Received: from DFLE211.ent.ti.com (10.64.6.69) by flwvzet201.ext.ti.com (10.248.192.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 28 Apr 2026 11:29:29 -0500 Received: from DFLE210.ent.ti.com (10.64.6.68) by DFLE211.ent.ti.com (10.64.6.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 28 Apr 2026 11:29:28 -0500 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DFLE210.ent.ti.com (10.64.6.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Tue, 28 Apr 2026 11:29:28 -0500 Received: from LTPW0EX92E.dhcp.ti.com (ltpw0ex92e.dhcp.ti.com [10.82.30.14]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 63SGTNnx1314937; Tue, 28 Apr 2026 11:29:24 -0500 From: Niranjan H Y To: CC: , , , , , , , , , , , , , , , , Niranjan H Y Subject: [PATCH v12 1/4] ASoC: SDCA: Add PDE verification reusable helper Date: Tue, 28 Apr 2026 21:59:08 +0530 Message-ID: <20260428162911.2372-1-niranjan.hy@ti.com> X-Mailer: git-send-email 2.33.0.windows.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF000252A1:EE_|PH5PR10MB997735:EE_ X-MS-Office365-Filtering-Correlation-Id: 5458db25-4b9c-4ac1-63f8-08dea543532d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700016|1800799024|376014|7416014|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:198.47.21.195;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:flwvzet201.ext.ti.com;PTR:ErrorRetry;CAT:NONE;SFS:(13230040)(82310400026)(36860700016)(1800799024)(376014)(7416014)(56012099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 6MXzFme7wuJW+0DVq6VgDIEgXgIXIkrcuFrOTNlhoHi8HEyQbEjJzawUORt2OgDBLg4YASjyCEdd1oQwZYTFWTmAer5nhUeOEzRxM57n/s82588U449OOvEr9h/7nQlPFwhEl7gwd3WuznOMGcF9lou8giMiTxle+zMk3oGymCahRF7fwn0zvQ7ku0waIqEjD/rkVz2U95MLhWbivx5maa17ymGSeLFjAdFpAFId9Egag9OdYvfFeonIGyeqnVXHnTlGZ6YYWsrc5l3/BGuxcwoLlpHBORNuYUvZCLJ4L8U74hKySgk6Hx7RTL9KkfYvHL7nxof7CToXsSpcw+v1Oy4cRYOvoodie+S0FNym5DEfxhB7icIgSaJdSM7v1adRzEJJO2Sk9oK3NGeZcTO4Y2asL/ZxEKckTX4enwaJAqnOhouYW/84JPDvIGrVTNq/ X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Apr 2026 16:29:30.9280 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5458db25-4b9c-4ac1-63f8-08dea543532d X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.195];Helo=[flwvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF000252A1.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH5PR10MB997735 Implement sdca_asoc_pde_ensure_ps() helper function to poll for PDE power state transitions. Per SDCA specification, after writing REQUESTED_PS, drivers must poll ACTUAL_PS until the target power state is reached. Changes include: - Add sdca_asoc_pde_ensure_ps() to handle ACTUAL_PS polling with support for device-specific delay tables or default intervals - Export function via sdca_asoc.h for use by SDCA-compliant drivers - Refactor entity_pde_event() in sdca_asoc.c to use the helper Signed-off-by: Niranjan H Y --- v12: - use correct namespace while exporting the variable - fix missing entity information while logging v11: - revert v10 changes - API is renamed from sdca_asoc_pde_ensure_ps to sdca_asoc_pde_poll_actual_ps v10: - write REQUESTED_PS before checking the target state. - change the API name sdca_asoc_pde_ensure_ps to sdca_asoc_set_pde_poll_sync v9: - newly added interface --- include/sound/sdca_asoc.h | 6 +++ sound/soc/sdca/sdca_asoc.c | 106 ++++++++++++++++++++++++++----------- 2 files changed, 82 insertions(+), 30 deletions(-) diff --git a/include/sound/sdca_asoc.h b/include/sound/sdca_asoc.h index 46a61a52d..ca35d5a44 100644 --- a/include/sound/sdca_asoc.h +++ b/include/sound/sdca_asoc.h @@ -13,6 +13,7 @@ struct device; struct regmap; struct sdca_function_data; +struct sdca_pde_delay; struct snd_ctl_elem_value; struct snd_kcontrol; struct snd_kcontrol_new; @@ -99,4 +100,9 @@ int sdca_asoc_q78_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); int sdca_asoc_q78_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); +int sdca_asoc_pde_poll_actual_ps(struct device *dev, struct regmap *regmap, + int function_id, int entity_id, + int from_ps, int to_ps, + const struct sdca_pde_delay *pde_delays, + int num_delays); #endif // __SDCA_ASOC_H__ diff --git a/sound/soc/sdca/sdca_asoc.c b/sound/soc/sdca/sdca_asoc.c index 2bfc8e5ae..e76afa396 100644 --- a/sound/soc/sdca/sdca_asoc.c +++ b/sound/soc/sdca/sdca_asoc.c @@ -359,15 +359,77 @@ static int entity_parse_ot(struct device *dev, return 0; } +/** + * sdca_asoc_pde_poll_actual_ps - Verify PDE power state reached target state + * @dev: Pointer to the device for error logging. + * @regmap: Register map for reading ACTUAL_PS register. + * @function_id: SDCA function identifier. + * @entity_id: SDCA entity identifier for the power domain. + * @from_ps: Source power state (SDCA_PDE_PSn value). + * @to_ps: Target power state (SDCA_PDE_PSn value). + * @pde_delays: Pointer to array of PDE delay specifications for this device, + * or NULL to use default polling interval. + * @num_delays: Number of entries in pde_delays array. + * + * This function polls the ACTUAL_PS register to verify that a PDE power state + * transition has completed. Per SDCA specification, after writing REQUESTED_PS, + * the caller must poll ACTUAL_PS until it reflects the requested state. + * + * This function implements the polling logic but does NOT modify the power state. + * The caller is responsible for writing REQUESTED_PS before invoking this function. + * + * If a delay table is provided, appropriate polling intervals are extracted based + * on the from_ps and to_ps transition. If no table is provided or no matching entry + * is found, a default polling interval is used. + * + * Return: Returns zero when ACTUAL_PS reaches the target state, -ETIMEDOUT if the + * polling times out before reaching the target state, or a negative error code if + * a register read fails. + */ +int sdca_asoc_pde_poll_actual_ps(struct device *dev, struct regmap *regmap, + int function_id, int entity_id, + int from_ps, int to_ps, + const struct sdca_pde_delay *pde_delays, + int num_delays) +{ + static const int polls = 100; + static const int default_poll_us = 1000; + unsigned int reg, val; + int i, poll_us = default_poll_us; + int ret; + + if (pde_delays && num_delays > 0) { + for (i = 0; i < num_delays; i++) { + if (pde_delays[i].from_ps == from_ps && pde_delays[i].to_ps == to_ps) { + poll_us = pde_delays[i].us / polls; + break; + } + } + } + + reg = SDW_SDCA_CTL(function_id, entity_id, SDCA_CTL_PDE_ACTUAL_PS, 0); + + for (i = 0; i < polls; i++) { + if (i) + fsleep(poll_us); + + ret = regmap_read(regmap, reg, &val); + if (ret) + return ret; + else if (val == to_ps) + return 0; + } + + return -ETIMEDOUT; +} +EXPORT_SYMBOL_NS(sdca_asoc_pde_poll_actual_ps, "SND_SOC_SDCA"); + static int entity_pde_event(struct snd_soc_dapm_widget *widget, struct snd_kcontrol *kctl, int event) { struct snd_soc_component *component = snd_soc_dapm_to_component(widget->dapm); struct sdca_entity *entity = widget->priv; - static const int polls = 100; - unsigned int reg, val; - int from, to, i; - int poll_us; + int from, to; int ret; if (!component) @@ -386,33 +448,17 @@ static int entity_pde_event(struct snd_soc_dapm_widget *widget, return 0; } - for (i = 0; i < entity->pde.num_max_delay; i++) { - struct sdca_pde_delay *delay = &entity->pde.max_delay[i]; - - if (delay->from_ps == from && delay->to_ps == to) { - poll_us = delay->us / polls; - break; - } - } - - reg = SDW_SDCA_CTL(SDW_SDCA_CTL_FUNC(widget->reg), - SDW_SDCA_CTL_ENT(widget->reg), - SDCA_CTL_PDE_ACTUAL_PS, 0); - - for (i = 0; i < polls; i++) { - if (i) - fsleep(poll_us); - - ret = regmap_read(component->regmap, reg, &val); - if (ret) - return ret; - else if (val == to) - return 0; - } + ret = sdca_asoc_pde_poll_actual_ps(component->dev, component->regmap, + SDW_SDCA_CTL_FUNC(widget->reg), + SDW_SDCA_CTL_ENT(widget->reg), + from, to, + entity->pde.max_delay, + entity->pde.num_max_delay); + if (ret) + dev_err(component->dev, "%s: PDE transition %x -> %x failed, err=%d\n", + entity->label, from, to, ret); - dev_err(component->dev, "%s: power transition failed: %x\n", - entity->label, val); - return -ETIMEDOUT; + return ret; } static int entity_parse_pde(struct device *dev, -- 2.34.1