From patchwork Fri Dec 6 22:12:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 847999 Received: from mail-pf1-f180.google.com (mail-pf1-f180.google.com [209.85.210.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A7F041FA172 for ; Fri, 6 Dec 2024 22:13:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523185; cv=none; b=A0agi5qhzzaGTZv56EUxOUAyWkdsbdA0SPZaxVI+3EZ5gazfA0ie7d6om9acmrKAnIwi2kXz8DHmvz+AVEg46h6yTR2+1233yL4nQcxDSewEZYKPNS7Yi6+oNHA8Vc4RQPx3XlMcJvbp6BrdJZqVSdYpTE8345fkKAKzOcmcHmw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523185; c=relaxed/simple; bh=j0AdB2Ec/r7btTrtPaxqZvIVKLQ2BqKv+VHDX0Y86Yk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OYk4lNk+0gzN0e6UTQEoMKIoGZNZ676j40Kfb0OGnlrpXfPD9Zy28/XrgFNYAu64l/k56wKLxtAsccNZDCK/bWqxHZOIAwHGEn6OcR/q+iZTQa6brr3wp96CQN+QeeGORP03rbNixZF2s40feYNX7ihLo/4rl5yAU7zOJF1dbOU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=yQOABU3x; arc=none smtp.client-ip=209.85.210.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="yQOABU3x" Received: by mail-pf1-f180.google.com with SMTP id d2e1a72fcca58-7242f559a9fso2759429b3a.1 for ; Fri, 06 Dec 2024 14:13:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1733523183; x=1734127983; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=C7rXiwNlneTt0S3Im0z7iFr8r3P4BVASAMn47K57uCI=; b=yQOABU3x6mAJz5tjwuN3i3WO81RWULmTM6VYIdTxgrzmrmj1+Jdrjk67yrYRb+qvr0 PaIb2w3vtZfwkuERbHr5Xx//lM4lMYB6VbX0KLBZr9TS/n4+CUZ90Yri0ZJtVtsTYjBr 77aT6ILA4aKaCg6MnGVHH1gp4TWEqb0zOMIS7FMdB765Sr305LVLIl4AbK7f037/jYmH BpTTRKQURTYGGQktDbHmGxb+D/j0NlMWdkarLYBN8YzXBRidpI6IlKthzWDKJNL/qgOe Pk0VwJjJ+ItAVKi0gkevBwCXMilKNjBJFsb0Je9iCsB1a+fpMfJHus7cgIi8igN3ENDS CIpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733523183; x=1734127983; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=C7rXiwNlneTt0S3Im0z7iFr8r3P4BVASAMn47K57uCI=; b=v9Bsxy5i70Nc6ngPjoUAJOQlHT1bHWDvMZdOLBNt39hSAP5YSyB3KzEEOOQpr+URFO Keqlyq407tn9nwaZfkWyZqJd2DaUgAV9BJYSbh6+6tozdEn+eEkrcj94vyk+g9OYJxa8 kKJsgOAypH7Rs7NZ+lUeKkHkLrX7M94QZ3SO/+8hJFIADlltvgdWDzO6OBXVLdFwMXpq c2InQMt5py/5JH3iyNO4ftqa1VeXFG9HmBxAqVubzGfifd1nY47GE3V+CCuG5cey0tFG jHsnYajSoGmWZjn/0K2IKUMor3z/iSrTruJlk2ClERKoOQ+XedQCWHHjdPWWPvKB1FiT n97w== X-Forwarded-Encrypted: i=1; AJvYcCXSuZ2mjdrf8v9THK8Va813MkDJPNG/fEN52f51sbWzwvdxunrWiMXYx7kCFUw4ZnVl+fvL+zNddA==@vger.kernel.org X-Gm-Message-State: AOJu0YwUVT/W6TRLjhSIW6Fxj1HxcOlUCo6+7XMdSgH+JOrrimnTENlN L9daJisuxfU0+X16RKktjYjGjnCOxmeJiR9aAe2wNFQfWi54xAS8/2B8LiKFbwc= X-Gm-Gg: ASbGncsFAzX7DH60AHLA1XGcPBGT2ncxr9fH33cHTqb/+v+1AQmt2a98KOKO8MyGHXD E8+17fbSTr/ruZF6QdwZdcXRm8cQz4A14+jma7MMjKYksgAsVS4ZzeSSyzQqQ0FWQDOeIXsrEcq 6/AvapgNgXyL7O9M45fDa2lcyZitdd5DBROBb+mC1HeaEjG1rdDjsj0DO0jYPP80oeiWYAIvllw XbkoYRmZIsMtDyf6S9V0umCnC4tipcJE9d/VRJI18aXd1I8 X-Google-Smtp-Source: AGHT+IEfJ6mTFHdobaZb1oZ2zV41f+MLXhV0wfwqztWK6BVWpG2aRCtQVIyY2AfpGqUSf7Ysz3ATBA== X-Received: by 2002:a05:6a00:994:b0:724:ed8f:4d35 with SMTP id d2e1a72fcca58-725b81a9cebmr6601983b3a.26.1733523182698; Fri, 06 Dec 2024 14:13:02 -0800 (PST) Received: from localhost ([97.126.182.119]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-725a27e9193sm3435675b3a.0.2024.12.06.14.13.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Dec 2024 14:13:02 -0800 (PST) From: Kevin Hilman Date: Fri, 06 Dec 2024 14:12:50 -0800 Subject: [PATCH v6 1/3] pmdomain: ti_sci: add per-device latency constraint management Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241206-lpm-v6-10-constraints-pmdomain-v6-1-833980158c68@baylibre.com> References: <20241206-lpm-v6-10-constraints-pmdomain-v6-0-833980158c68@baylibre.com> In-Reply-To: <20241206-lpm-v6-10-constraints-pmdomain-v6-0-833980158c68@baylibre.com> To: Ulf Hansson , linux-pm@vger.kernel.org Cc: Nishanth Menon , Dhruva Gole , Akashdeep Kaur , Sebin Francis , Markus Schneider-Pargmann , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kevin Hilman X-Mailer: b4 0.15-dev-355e8 X-Developer-Signature: v=1; a=openpgp-sha256; l=4286; i=khilman@baylibre.com; h=from:subject:message-id; bh=j0AdB2Ec/r7btTrtPaxqZvIVKLQ2BqKv+VHDX0Y86Yk=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBnU3bs+JJtfkcVGHUhIAcSaWpLkYXr8u3NXouG5 4fGc5caxX6JAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCZ1N27AAKCRBZNxia0/vG ZfnwD/0StIlo35PDhUGEwnfZ+Rydqy8cNKGKRhQb5KzUsyiuOL4ELlJa5D33A8NB2a75+95dlsg gzK1uGvwIdqpVGPEq6kzS+6+66g7gKkGprQ3Mt1pFHFMBhA2cb+8NMzPHxNUxBjcq2CqTL4lMaM 1aeQ5YlLV3GTpJg7ec0WmleQRWkSY5XouNK3GFSSqCwFSYy9s7dri1gBDuzPy/ZP9HfEK7FoBA/ 3P5NITclzhBf0OuMF3qmDhQFC7TYX+CSXxKQFQl950y9xpy2zOuKRPWYO0XEqJfHvzWA9Wz/xGi ujsnul6qP8wqGyjbkWZNGHQK6lq2ryliZRnDPhB686kUFKNf6iFdTRISMa7TLHBkMoC6AGL4f+o 3NB5yrgWOjEItFozVTrPtZSt37pQgCRkww7gFaE7EFPt1EfLXkclTZAjWjodA2U7ndDG3DgMUmq 1jcKS7HMQH0iJfAcwDQKpPOZLaakslLctyRlsaBG+duSUZY4moA49Ork4iUCUJObMSpi3zBDDDv wWNjirwjI6iGIrTw/R+v9Xkc9mJzZZQSGm/J+Py5lPrJqiDHI4EgSkBuCJoG2nfoHQg9qJ8vsX4 ijrbm+t0IDGLqpMgS+qFX0ViTMvxFy6qMkuCiNCji7qFNIVQhop1ioKJ68eU6Po1/wD3XpUlu0a SKtqsstaZbro8JQ== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 For each device in a TI SCI PM domain, check whether the device has any resume latency constraints set via per-device PM QoS. If constraints are set, send them to DM via the new SCI constraints API. Checking for constraints happen for each device before system-wide suspend (via ->suspend() hook.) An important detail here is that the PM domain driver inserts itself into the path of both the ->suspend() and ->resume() hook path of *all* devices in the PM domain. This allows generic PM domain code to handle the constraint management and communication with TI SCI. Further, this allows device drivers to use existing PM QoS APIs to add/update constraints. DM firmware clears constraints during its resume, so Linux has to check/update/send constraints each time system suspends. Also note that the PM QoS framework uses usecs as the units for latency whereas the TI SCI firmware uses msecs, so a conversion is needed before passing to TI SCI. Co-developed-by: Vibhore Vardhan Signed-off-by: Vibhore Vardhan Reviewed-by: Markus Schneider-Pargmann Reviewed-by: Ulf Hansson Tested-by: Dhruva Gole Signed-off-by: Kevin Hilman --- drivers/pmdomain/ti/ti_sci_pm_domains.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c index 0e4bd749d067309654307484c5bb98711bf06daf..963fe1901c959197d5d8b5d34fd8420dfb180087 100644 --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c @@ -13,6 +13,8 @@ #include #include #include +#include +#include #include #include @@ -51,6 +53,32 @@ struct ti_sci_pm_domain { #define genpd_to_ti_sci_pd(gpd) container_of(gpd, struct ti_sci_pm_domain, pd) +static inline bool ti_sci_pd_is_valid_constraint(s32 val) +{ + return val != PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; +} + +#ifdef CONFIG_PM_SLEEP +static void ti_sci_pd_set_lat_constraint(struct device *dev, s32 val) +{ + struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain); + struct ti_sci_pm_domain *pd = genpd_to_ti_sci_pd(genpd); + const struct ti_sci_handle *ti_sci = pd->parent->ti_sci; + u16 val_ms; + int ret; + + /* PM QoS latency unit is usecs, TI SCI uses msecs */ + val_ms = val / USEC_PER_MSEC; + ret = ti_sci->ops.pm_ops.set_latency_constraint(ti_sci, val_ms, TISCI_MSG_CONSTRAINT_SET); + if (ret) + dev_err(dev, "ti_sci_pd: set latency constraint failed: ret=%d\n", + ret); + else + dev_dbg(dev, "ti_sci_pd: ID:%d set latency constraint %d\n", + pd->idx, val); +} +#endif + /* * ti_sci_pd_power_off(): genpd power down hook * @domain: pointer to the powerdomain to power off @@ -79,6 +107,26 @@ static int ti_sci_pd_power_on(struct generic_pm_domain *domain) return ti_sci->ops.dev_ops.get_device(ti_sci, pd->idx); } +#ifdef CONFIG_PM_SLEEP +static int ti_sci_pd_suspend(struct device *dev) +{ + int ret; + s32 val; + + ret = pm_generic_suspend(dev); + if (ret) + return ret; + + val = dev_pm_qos_read_value(dev, DEV_PM_QOS_RESUME_LATENCY); + if (ti_sci_pd_is_valid_constraint(val)) + ti_sci_pd_set_lat_constraint(dev, val); + + return 0; +} +#else +#define ti_sci_pd_suspend NULL +#endif + /* * ti_sci_pd_xlate(): translation service for TI SCI genpds * @genpdspec: DT identification data for the genpd @@ -182,6 +230,13 @@ static int ti_sci_pm_domain_probe(struct platform_device *pdev) pd->pd.flags |= GENPD_FLAG_ACTIVE_WAKEUP; pd->idx = args.args[0]; pd->parent = pd_provider; + /* + * If SCI constraint functions are present, then firmware + * supports the constraints API. + */ + if (pd_provider->ti_sci->ops.pm_ops.set_device_constraint && + pd_provider->ti_sci->ops.pm_ops.set_latency_constraint) + pd->pd.domain.ops.suspend = ti_sci_pd_suspend; pm_genpd_init(&pd->pd, NULL, true); From patchwork Fri Dec 6 22:12:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 847998 Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 14652204564 for ; Fri, 6 Dec 2024 22:13:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523186; cv=none; b=Spuce11DtL63Xs+ddxnB90crxFLgYXWhiTO+SQay5hZgXoUmoRLTVHayVU+nbrkllPbI5EEaRCFmxw4FkiS3PWIA1EtLobxIxcTVXG+03omI/Hm2FznqZ/dY+InVOqC4J/+aFEWA008Tdw6BVtp96vpG3eWwoueZygejk2H6C+c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523186; c=relaxed/simple; bh=UYKwDCjPt0Pb4J8LYvmA473uK8bBnXmKBatytxsKAXw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jEDCXQqE0Ouku1D0BiasQsf4GPMFHzQo7bEmncaKWR3cfpZgogb1QUOtNgsfygruiKJT9aLY7dJ9DV2VWQi0AMzG67WChaDBwYJQefT4Hj4yrAcQPgKkcQmpwoUhbgNBr8iMiQXnGxVwKJYG5n5thuDsHuM0lVauXHib7CB/SU4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=E17rPUO5; arc=none smtp.client-ip=209.85.214.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="E17rPUO5" Received: by mail-pl1-f169.google.com with SMTP id d9443c01a7336-215d92702feso22246685ad.1 for ; Fri, 06 Dec 2024 14:13:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1733523183; x=1734127983; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=gO297//2n/rgfagI213U6eCWKlgwMp68Rn9iCoz6hZE=; b=E17rPUO52OOsS8h8eIj0qqMPydIHKDWtywMlgJUSVjgU0voEmwGl1ShzoAyr42HoLO GjWeBKdLzg5rGUHQxzBEs5Pe4Z8cwlJn6vqZKKBt8bN2Y5DUJU61BGQynstE0SKdmxaB PudlAA6UvPShVjhxYw2it9OnVGq7zYM/1bkiBoCxsl9uaf4TpJvQei1DXrEj1UI9hBMj QpWYP41/e8PemK2gGBxLlqjuhMBRb/gLIeGD3RaDbQb4wd1w0ebc1dWSOZBpESrxOXc0 7RketTi76eBeieCqx74NKpD+Drq3DrQ1eHgNLBSiS0o+1aBmXFDZWNz/57YfuUJ4HE12 fVIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733523183; x=1734127983; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gO297//2n/rgfagI213U6eCWKlgwMp68Rn9iCoz6hZE=; b=CqIu7qsvfHpoB5/QKSXcL5Df+hldEm8fPlqK4FE7uEFp3WsjZiKxPSxsCQyGflsJf1 qEufe7fEDQhRiuJ7gUNXjDhEnaH1MNl2wKB5TibGAJWqjsJyx7h8wZ2QuWjH4WfUhbYf pKBjwuyEDcB5ZSxBwVawpALifkaXlQLtFRNb3WZJce5sVZLVHbLsLftoQK6mB0WtyBmS 4/5oggz7LsJ63Q3KUPidUvrwMs9nGDnW52MZpUdho+MRGG/deHJ5k9vi21ftXZ4LYw89 bwnTfk3ZkEqJLikpuclEyaY5f0HaEfwebkL7p31Bg+fjI144LKOGBFWiNmgwYpnCCY2g mN9g== X-Forwarded-Encrypted: i=1; AJvYcCXpHoJY3KKdjx2PqsV/YNKAliArJCbeKs3crZrBnzOtGvnRspJdLxCNj9PX0fecXypmac/rBISBWQ==@vger.kernel.org X-Gm-Message-State: AOJu0YyeqVPrvR0znDweGM4KeHL81D18h1igu+lt+za/2hQS1I1cLRHc cOFnLGeoGKZMPqLUKZuVuEkeRT8lPbx5ISzsEPpmWMbLX1Vh32CyqVq79jXBxVw= X-Gm-Gg: ASbGnct947wrYhWGSjWWb5l5zWlmeJ9ylnJLFNmMMiS3qcTV0CHcfI9kV2C6DN3x0tA Cak6vVgFmXrhtJ/bG1JgrVYAxL+9pl6ho8etD3MAJgWRbyB2E+aCW1tgUwBqTpyS52AgnWF0hah tiXQKYfnn8t16/JbAoJXfBdUkQF64j0Vk1PlSNLrvlk5TiZaDZ5NVNOUJblvUE0qL4+ro4OSEMx WRax2e34nK4gtmOiNZsMHznGydf3Q06JrGYBND4dQGmpRMv X-Google-Smtp-Source: AGHT+IEV5xymYqZ1yJV9BrjFB0Nh2Eg2LOwsypkmTdkIep4O1iPhv+s2TJ3JIQRJlUDRcRjBY3qeBw== X-Received: by 2002:a17:902:f54d:b0:212:68e2:6c81 with SMTP id d9443c01a7336-21614d4ac70mr65378675ad.24.1733523183496; Fri, 06 Dec 2024 14:13:03 -0800 (PST) Received: from localhost ([97.126.182.119]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-215f8f31a87sm33273575ad.268.2024.12.06.14.13.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Dec 2024 14:13:03 -0800 (PST) From: Kevin Hilman Date: Fri, 06 Dec 2024 14:12:51 -0800 Subject: [PATCH v6 2/3] pmdomain: ti_sci: add wakeup constraint management Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241206-lpm-v6-10-constraints-pmdomain-v6-2-833980158c68@baylibre.com> References: <20241206-lpm-v6-10-constraints-pmdomain-v6-0-833980158c68@baylibre.com> In-Reply-To: <20241206-lpm-v6-10-constraints-pmdomain-v6-0-833980158c68@baylibre.com> To: Ulf Hansson , linux-pm@vger.kernel.org Cc: Nishanth Menon , Dhruva Gole , Akashdeep Kaur , Sebin Francis , Markus Schneider-Pargmann , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kevin Hilman X-Mailer: b4 0.15-dev-355e8 X-Developer-Signature: v=1; a=openpgp-sha256; l=1817; i=khilman@baylibre.com; h=from:subject:message-id; bh=UYKwDCjPt0Pb4J8LYvmA473uK8bBnXmKBatytxsKAXw=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBnU3bsqDLxWO2AWpws47wAA/jFbeDffWrz4qPsb SyYgMi7CCaJAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCZ1N27AAKCRBZNxia0/vG ZRrND/4xtabQMPgyDLpYgMJPS1c2LUeKnOTWkJ83z8YH1AJs8pNydn7rBCna/HveiMWUjn7DPkE KKjuHB+QYLsgb94migpG4raM9BQZK3UVq5Vv08t7RT8UtHiwo7OTJj2DIPhXk/U+ic7dmaFjD5u yDFV0bFWqpRXJ9oHvLvS7yCWjQy/U7jJxQKVMUQT53bQ9rDXdewLkUzf5A6lwtPodtCArIZnYb0 OhbDVEfLGmcRMBVjYsQKYXHRCbCsucsAvqB2quIcXCKrLewvW3dyfsCuJQ74kWnTjccm/hXToSo MQmwb2jaRhnuUDS2TYZq3y8pkiGM6obB910shrpH8UrZqdHwDlzhahtBnvbE0gk3tkC+LfUJIr9 PE5ciY2YECShjBF4B33L5g+4cIngkCf+Em49mC8LJKf4ETH3rac8WXlgcMHS4NfaAbvzeXiphbH T+qnxrpBzYPUkTAmkj+Iffpmjf2oGsbILBNduO/ep9k87AbAoVe1W3jZxjUUiqa56o1rNN6JjS/ Gfb+K9K6+UA9ipYUJc+bQDtSaeFArjOtcjDKKt+8NDeK6asdGBb0r6RiPId1HLPfe+IZcoxY1ay QeyzotFYL8gGZxyh3wpDySjl+gEVhMUHtI/AfAebsDjUEBM5fUE+puI97FJnlCZUo3fKYudUuqJ 4TCOKcNnemEYO8g== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 During system-wide suspend, check all devices connected to PM domain to see if they are wakeup-enabled. If so, set a TI SCI device constraint. Note: DM firmware clears all constraints on resume. Co-developed-by: Vibhore Vardhan Signed-off-by: Vibhore Vardhan Reviewed-by: Ulf Hansson Tested-by: Dhruva Gole Signed-off-by: Kevin Hilman Reviewed-by: Dhruva Gole --- drivers/pmdomain/ti/ti_sci_pm_domains.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c index 963fe1901c959197d5d8b5d34fd8420dfb180087..587961519dcc9e13c32efe76cdaf801281f72f67 100644 --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c @@ -79,6 +79,21 @@ static void ti_sci_pd_set_lat_constraint(struct device *dev, s32 val) } #endif +static inline void ti_sci_pd_set_wkup_constraint(struct device *dev) +{ + struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain); + struct ti_sci_pm_domain *pd = genpd_to_ti_sci_pd(genpd); + const struct ti_sci_handle *ti_sci = pd->parent->ti_sci; + int ret; + + if (device_may_wakeup(dev)) { + ret = ti_sci->ops.pm_ops.set_device_constraint(ti_sci, pd->idx, + TISCI_MSG_CONSTRAINT_SET); + if (!ret) + dev_dbg(dev, "ti_sci_pd: ID:%d set device constraint.\n", pd->idx); + } +} + /* * ti_sci_pd_power_off(): genpd power down hook * @domain: pointer to the powerdomain to power off @@ -121,6 +136,8 @@ static int ti_sci_pd_suspend(struct device *dev) if (ti_sci_pd_is_valid_constraint(val)) ti_sci_pd_set_lat_constraint(dev, val); + ti_sci_pd_set_wkup_constraint(dev); + return 0; } #else From patchwork Fri Dec 6 22:12:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 848653 Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D83E0212F9B for ; Fri, 6 Dec 2024 22:13:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523186; cv=none; b=Fu3IcNzRvlnK4oHlb+mwMygJOi6eu+Id8h+yeApDL9YEizR8buW4vsxC0dvsUoCN35a4qi8i8nWIjYXRCJ46CvlyRsqUZPLbxE1WFUMm5vr5vrkbHHvRXMnprh/3xzS4FtczgYauxBv6/Q1NJLPDh4T7zPk4QY9EM2+d0aN6EYo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523186; c=relaxed/simple; bh=MvYLl1dkczYVZlHhGI19Lnk7zfxJItmwrZlS8xz45cc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=cl6eTiB/VMOy9UuM/SWDE40LFWHRtZuZhIw5YMDjPv7Nj86Q6MDbhNxKc1KLTGIyORY0OaWBq6ukmAebznKBjk3W0eOCzDIcD1TqXzvkyCYJoYT5OrjuN3TYxYrTn2paD6p5OfPVu1eeC8lBou6PMkJTkJIDrmQMj2YB4eNthck= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=mw4URXdL; arc=none smtp.client-ip=209.85.214.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="mw4URXdL" Received: by mail-pl1-f171.google.com with SMTP id d9443c01a7336-2161eb95317so8936835ad.1 for ; Fri, 06 Dec 2024 14:13:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1733523184; x=1734127984; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=k1Ep2O9wbC6ZlfsCLYQrAmWucAGOrIVsXyOuKD+Yvgc=; b=mw4URXdLte/tCwznxgayVRACMg0HUt4ycrYtdboh8tlkc6cI1Uh6c6yB3Pq+843fKJ Vouo6BC1ajc9MWDNDIHusskdhPX9OzO0jOhgiONKQ31U+Mb8eynMLOCOmYPUaDDzy9i8 U8JKm9OEJMOoOThmQksouMtq+E8esnXIqcXlBYgOXJcNBY1l5eSg7728Srgca5bw5Aby 8xmHbOGwUK/ZQwkXBDwAC6gRVZba0eWMxSyVO9oDbr4uyjt14DyCUUMiYLPju2v40+Fa Jm5FqX6bqgcOHK+2tsu8qNIe1Txd3MoQ6jovZmmpb07j0GArDfLp7vNvKSxP5/hGuC8a BenQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733523184; x=1734127984; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=k1Ep2O9wbC6ZlfsCLYQrAmWucAGOrIVsXyOuKD+Yvgc=; b=o82IYpLW4UQ3MDAmw9mb5bwo0RNTIgznGsJl2BUbnELU9AVQfLsAzAm+SwTx5nHHDS 4mw7kVJ1nFa7nWgT6KndE6xM5C+Jy2oCHCvrZhoh5DQq7m5agYRQgYu/kresMRuomZ9F fGIActGkzv0aiH2rpK8/y8yXNQif2ZLnbuWuf+VJAFYzfb2U36rGCRowcXx7xX+aKNIN zL+MF2q+gZ+davenqD4bv6ixnULACbqsq59LV/OaE8dARkVUqBIEO1lBrCfIkN+tztKV DKraS9+s9drdTI1GEgDvBXOogDvdXBJli93Ynhn/8cbxGmSYu5SqZBLqvwDe7E6TUdUt 6Dcw== X-Forwarded-Encrypted: i=1; AJvYcCXPS/lozRPWP579lnJunD0FjfuTrzsrk0AuzAyA0h608Jyl5t/M/Dqo4se0Vdu+7Y2ZMsAFtkeDzw==@vger.kernel.org X-Gm-Message-State: AOJu0YxoArXpQ8y1izXBsXp0yKrd7LKrmoCIFXmpHa4LZ5094AEMJDGA xWgFese99yNpiwqk99LG+63rOkltd652QxoaOQC3n11aESNm+OMdZknuD109IiY= X-Gm-Gg: ASbGncsw7F8xbed6Z33dF1PcaPBW3/CwGkzhO2lGBnyErSYUjjN4vVSIoAcLQkNDDzz HDWUEcPZ0rZl2H25fi2dXmSG6Wq8oEY9Clv+TJNrnBUpaFZyPPCC5qIGD1odBbaSIuyTS0/FCQn DobN0ZStEw8KjHJTeTOTE7PQRlSiYnzLT3TBcxSIfylVp+Vp0VM4BIhMzfs+R3QLMQH/YiCrl7G P4Y78yoYIb/lcm5W3iYfGJFoGbQqaC77KJertZ+HIWoiSzT X-Google-Smtp-Source: AGHT+IHV64TQ1MOmZpTLIsCVD0ziIh77UI09rSBXDq+X4jwn5nrPeDN6Vm4VrpDkqcW6GWDyrxNBiQ== X-Received: by 2002:a17:903:249:b0:205:4721:19c with SMTP id d9443c01a7336-21614dcda61mr70577895ad.37.1733523184271; Fri, 06 Dec 2024 14:13:04 -0800 (PST) Received: from localhost ([97.126.182.119]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-215f8f09120sm33444155ad.177.2024.12.06.14.13.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Dec 2024 14:13:03 -0800 (PST) From: Kevin Hilman Date: Fri, 06 Dec 2024 14:12:52 -0800 Subject: [PATCH v6 3/3] pmdomain: ti_sci: handle wake IRQs for IO daisy chain wakeups Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241206-lpm-v6-10-constraints-pmdomain-v6-3-833980158c68@baylibre.com> References: <20241206-lpm-v6-10-constraints-pmdomain-v6-0-833980158c68@baylibre.com> In-Reply-To: <20241206-lpm-v6-10-constraints-pmdomain-v6-0-833980158c68@baylibre.com> To: Ulf Hansson , linux-pm@vger.kernel.org Cc: Nishanth Menon , Dhruva Gole , Akashdeep Kaur , Sebin Francis , Markus Schneider-Pargmann , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kevin Hilman X-Mailer: b4 0.15-dev-355e8 X-Developer-Signature: v=1; a=openpgp-sha256; l=1635; i=khilman@baylibre.com; h=from:subject:message-id; bh=MvYLl1dkczYVZlHhGI19Lnk7zfxJItmwrZlS8xz45cc=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBnU3bsod2B2Q8ODRoP42LqdWQ/Hgb2ui7QUvDSt j6QUnJ9692JAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCZ1N27AAKCRBZNxia0/vG ZWpiD/wN88P5QYO0MxFMU/+oEkdJG9BPIJa59vyGq6XcClgTY3P1szdPJum+NRMgyjYE8GeXT9F Ou6dZP5N/1KV8FAnqUkVJI4kuopqiGzO/F2jW6vY047ixx6MQrpBuhIDKowMEzItRjJxfZMRb4X AvOJhHUihsPkVHICxUdUYEoaKpdlbPl7NFTDuzLM5eoOFbmtwl5riyz8q9tnKsKC79nwBJ6o4Ko avT8z9TAefa3XBuOMrI9M2LYMA+bua+Yh5VYLHYmm1Vs3VdIowjoKPJ0ThUMz4OFq8sEbBspG5i 24O25Zd+q+dqR3xflEDHcVhxkb/VYlmGqkIY/awyW3IsMFiPgoPb2c2FJYktQVl/wjJfnVb/4UX PoINOLb+w7juAtJKByKaUxvUQBd4Z6U1m3ePJVfqXAik5KvUX/3jo2JpGoJozlMxppAxp66NpTn GwK4Yj8hCtPd2ELxnYpPv5y1c3IFZ495IjzVbemGzHjHWQ3PnjcLZv7KcDZdkoZYc9I2ljyoZV6 ew5zdI4DBoZ4eIhajTwKrekEHg6LEqJJhjwFYyZ7N1+gTum/WH1wZXGtePL5OE6oEPIr2nquWTn HZQaMqJdLZ2es2OZP+MGBkXEBWVhOfCBjdzQN67NQk7qLd0L0/CY5bo4d/CoL+nu5/q3apBAvc9 L4PxM9YgNeY4bIQ== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 When a device supports IO daisy-chain wakeups, it uses a dedicated wake IRQ. Devices with IO daisy-chain wakeups enabled should not set wakeup constraints since these can happen even from deep power states, so should not prevent the DM from picking deep power states. Wake IRQs are set with dev_pm_set_wake_irq() or dev_pm_set_dedicated_wake_irq(). The latter is used by the serial driver used on K3 platforms (drivers/tty/serial/8250/8250_omap.c) when the interrupts-extended property is used to describe the dedicated wakeup interrupt. Detect these wake IRQs in the suspend path, and if set, skip sending constraint. Tested-by: Dhruva Gole Signed-off-by: Kevin Hilman --- drivers/pmdomain/ti/ti_sci_pm_domains.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c index 587961519dcc9e13c32efe76cdaf801281f72f67..3fb78343d4388a7087dab5061c1127586968ef19 100644 --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c @@ -87,6 +87,15 @@ static inline void ti_sci_pd_set_wkup_constraint(struct device *dev) int ret; if (device_may_wakeup(dev)) { + /* + * If device can wakeup using IO daisy chain wakeups, + * we do not want to set a constraint. + */ + if (dev->power.wakeirq) { + dev_dbg(dev, "%s: has wake IRQ, not setting constraints\n", __func__); + return; + } + ret = ti_sci->ops.pm_ops.set_device_constraint(ti_sci, pd->idx, TISCI_MSG_CONSTRAINT_SET); if (!ret)