From patchwork Tue Jan 23 16:04:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 13527740 Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) (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 1A4506169F; Tue, 23 Jan 2024 16:04:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.23.248 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706025865; cv=none; b=VKolAi7crAr6VNkDR7UZ0FzS2fQTTqnavlTMRiVn0Qxm7UJosXhsn7Hy73/qIxU4686VlXCyGQW90/rf9yPrz1IJ9SO8yJNBbYmWwHs0erpFjuBENnAKgEJqM2Y+XKoDYL8s0V6MLz0U0cuQtj0286PbT2U/mcF53N68y82z++k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706025865; c=relaxed/simple; bh=SzcvmT0u+d+mOegkatFJAAaI6odzW0ax7/YjwwvrAw4=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Pbs0T5+6bs6vt7D581aPCbfC8H0wy3uoHjVUWj08mat5GlPY6WKf050yx09aDT77+Zi2NEoGp9NMrkHmT0zwr42vixwxHuvYfuFWsSQecetM+WQ/JhdJLHTH/iHpFt0OPvAbsPu6wKCCtOgw1poAgeOjbQWnU6QOG8TjU6iBQCU= ARC-Authentication-Results: i=1; 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=OI+YrjUv; arc=none smtp.client-ip=198.47.23.248 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="OI+YrjUv" Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 40NG46U4043257; Tue, 23 Jan 2024 10:04:06 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1706025846; bh=7eJWi6eNYuFYPK/LARry4zNJsatwYYOpsn8tijlRXkA=; h=From:To:CC:Subject:Date; b=OI+YrjUv5WYUCDslzs6sXfbg6aDesNYlN7W5gsuI558QH9TjZ36o1AxDLEmDiwwY/ JNp/A9iYpTxGv/KqH0ptAImVsLpZzo+1TN5WwRyX2fE2zDhNNsORzK02iQXaCZphlZ Wr2vpEb/XNvn6sXm+CfHcyLOuFhBaYXu2c4DPjJM= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 40NG46j6087256 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 23 Jan 2024 10:04:06 -0600 Received: from DLEE104.ent.ti.com (157.170.170.34) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 23 Jan 2024 10:04:06 -0600 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 23 Jan 2024 10:04:06 -0600 Received: from lelvsmtp6.itg.ti.com ([10.249.42.149]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 40NG45hc078075; Tue, 23 Jan 2024 10:04:05 -0600 From: Andrew Davis To: Bjorn Andersson , Baolin Wang CC: , , , Andrew Davis Subject: [PATCH 1/4] hwspinlock: omap: Remove unneeded check for OF node Date: Tue, 23 Jan 2024 10:04:02 -0600 Message-ID: <20240123160405.360437-1-afd@ti.com> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 We do not use the OF node anymore, nor does it matter how we got to probe, so remove the check for of_node. Signed-off-by: Andrew Davis --- drivers/hwspinlock/omap_hwspinlock.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c index a9fd9ca45f2a8..cca55143d24d4 100644 --- a/drivers/hwspinlock/omap_hwspinlock.c +++ b/drivers/hwspinlock/omap_hwspinlock.c @@ -74,7 +74,6 @@ static const struct hwspinlock_ops omap_hwspinlock_ops = { static int omap_hwspinlock_probe(struct platform_device *pdev) { - struct device_node *node = pdev->dev.of_node; struct hwspinlock_device *bank; struct hwspinlock *hwlock; void __iomem *io_base; @@ -82,9 +81,6 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) /* Only a single hwspinlock block device is supported */ int base_id = 0; - if (!node) - return -ENODEV; - io_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(io_base)) return PTR_ERR(io_base); From patchwork Tue Jan 23 16:04:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 13527739 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) (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 C791A6169A; Tue, 23 Jan 2024 16:04:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.23.249 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706025864; cv=none; b=F/Y5xwZvYYpOh3gHd0GUJlbPPMoroIOUau4Pqxxr12ShVr6M1clvG0QbEBD8qY3xZF+JO18MJXmhYKluFDnEQeenLMK6kz3HltDSGjJ3K37XSe/Jax/JyeSBSJfNgiIUxra18QlnSkzVvjYrzBfQqm9J5xTlbDtssJWtx3m1R00= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706025864; c=relaxed/simple; bh=ugWBVGHl9LGTKMjFFmofYncOafJxq6iGlCz4U58LStA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=eugjlQaeSmqVo0DBjnQuaBth+gqF5wAVqJzIC1I50NSBItxDXLhjuOg0hbrubT16go/24j8CrzxmOeLZwsUp5PXS5/2PBPft7k6xrM1aV3JdFvFKOvbdwY7Hhtth0a3hV/phm4cm72WSdPpGEWkcEP6NTkz36P89O60FMUpM0rA= ARC-Authentication-Results: i=1; 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=iDoxRWUk; arc=none smtp.client-ip=198.47.23.249 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="iDoxRWUk" Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 40NG46ib087269; Tue, 23 Jan 2024 10:04:06 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1706025846; bh=yOuisTLklSBvGzcrtbUbmPkWFz54wDZElaDy3BQHTAo=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=iDoxRWUkiuUGYIELKgqIfeERq9Djy8IRnDP6Rcs0GgL0oXM9k6OiO6ItGmiUMtf8v Nw03Po783QOYg31Lch8NCHKtVJ1UxfD/2hCmc4iU91feY5P/XPFqkgpnjJK7twuLCn j7BPzZcyCjSAugOxTs/FPSxF3z8bABV317zoGhSA= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 40NG46xS030496 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 23 Jan 2024 10:04:06 -0600 Received: from DLEE114.ent.ti.com (157.170.170.25) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 23 Jan 2024 10:04:06 -0600 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 23 Jan 2024 10:04:06 -0600 Received: from lelvsmtp6.itg.ti.com ([10.249.42.149]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 40NG45hd078075; Tue, 23 Jan 2024 10:04:06 -0600 From: Andrew Davis To: Bjorn Andersson , Baolin Wang CC: , , , Andrew Davis Subject: [PATCH 2/4] hwspinlock: omap: Use devm_pm_runtime_enable() helper Date: Tue, 23 Jan 2024 10:04:03 -0600 Message-ID: <20240123160405.360437-2-afd@ti.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240123160405.360437-1-afd@ti.com> References: <20240123160405.360437-1-afd@ti.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 This disables runtime PM on module exit, allowing us to simplify the probe exit path and remove callbacks. Do that here. Signed-off-by: Andrew Davis --- drivers/hwspinlock/omap_hwspinlock.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c index cca55143d24d4..2f18ea6c05e3f 100644 --- a/drivers/hwspinlock/omap_hwspinlock.c +++ b/drivers/hwspinlock/omap_hwspinlock.c @@ -89,10 +89,10 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) * make sure the module is enabled and clocked before reading * the module SYSSTATUS register */ - pm_runtime_enable(&pdev->dev); + devm_pm_runtime_enable(&pdev->dev); ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) - goto runtime_err; + return ret; /* Determine number of locks */ i = readl(io_base + SYSSTATUS_OFFSET); @@ -104,22 +104,18 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) */ ret = pm_runtime_put(&pdev->dev); if (ret < 0) - goto runtime_err; + return ret; /* one of the four lsb's must be set, and nothing else */ - if (hweight_long(i & 0xf) != 1 || i > 8) { - ret = -EINVAL; - goto runtime_err; - } + if (hweight_long(i & 0xf) != 1 || i > 8) + return -EINVAL; num_locks = i * 32; /* actual number of locks in this device */ bank = devm_kzalloc(&pdev->dev, struct_size(bank, lock, num_locks), GFP_KERNEL); - if (!bank) { - ret = -ENOMEM; - goto runtime_err; - } + if (!bank) + return -ENOMEM; platform_set_drvdata(pdev, bank); @@ -129,16 +125,12 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) ret = hwspin_lock_register(bank, &pdev->dev, &omap_hwspinlock_ops, base_id, num_locks); if (ret) - goto runtime_err; + return ret; dev_dbg(&pdev->dev, "Registered %d locks with HwSpinlock core\n", num_locks); return 0; - -runtime_err: - pm_runtime_disable(&pdev->dev); - return ret; } static void omap_hwspinlock_remove(struct platform_device *pdev) @@ -151,8 +143,6 @@ static void omap_hwspinlock_remove(struct platform_device *pdev) dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret); return; } - - pm_runtime_disable(&pdev->dev); } static const struct of_device_id omap_hwspinlock_of_match[] = { From patchwork Tue Jan 23 16:04:04 2024 Content-Type: text/plain; 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Tue, 23 Jan 2024 10:04:06 -0600 From: Andrew Davis To: Bjorn Andersson , Baolin Wang CC: , , , Andrew Davis Subject: [PATCH 3/4] hwspinlock: omap: Use devm_hwspin_lock_register() helper Date: Tue, 23 Jan 2024 10:04:04 -0600 Message-ID: <20240123160405.360437-3-afd@ti.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240123160405.360437-1-afd@ti.com> References: <20240123160405.360437-1-afd@ti.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 This unregister the HW spinlock on module exit, allowing us to remove the remove callback. Do this here. Signed-off-by: Andrew Davis --- drivers/hwspinlock/omap_hwspinlock.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c index 2f18ea6c05e3f..1b0a1bea2b24a 100644 --- a/drivers/hwspinlock/omap_hwspinlock.c +++ b/drivers/hwspinlock/omap_hwspinlock.c @@ -117,12 +117,10 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) if (!bank) return -ENOMEM; - platform_set_drvdata(pdev, bank); - for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++) hwlock->priv = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i; - ret = hwspin_lock_register(bank, &pdev->dev, &omap_hwspinlock_ops, + ret = devm_hwspin_lock_register(&pdev->dev, bank, &omap_hwspinlock_ops, base_id, num_locks); if (ret) return ret; @@ -133,18 +131,6 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) return 0; } -static void omap_hwspinlock_remove(struct platform_device *pdev) -{ - struct hwspinlock_device *bank = platform_get_drvdata(pdev); - int ret; - - ret = hwspin_lock_unregister(bank); - if (ret) { - dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret); - return; - } -} - static const struct of_device_id omap_hwspinlock_of_match[] = { { .compatible = "ti,omap4-hwspinlock", }, { .compatible = "ti,am64-hwspinlock", }, @@ -155,7 +141,6 @@ MODULE_DEVICE_TABLE(of, omap_hwspinlock_of_match); static struct platform_driver omap_hwspinlock_driver = { .probe = omap_hwspinlock_probe, - .remove_new = omap_hwspinlock_remove, .driver = { .name = "omap_hwspinlock", .of_match_table = omap_hwspinlock_of_match, From patchwork Tue Jan 23 16:04:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 13527737 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) (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 BA12361664; 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Tue, 23 Jan 2024 10:04:07 -0600 Received: from DLEE111.ent.ti.com (157.170.170.22) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 23 Jan 2024 10:04:07 -0600 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DLEE111.ent.ti.com (157.170.170.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 23 Jan 2024 10:04:07 -0600 Received: from lelvsmtp6.itg.ti.com ([10.249.42.149]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 40NG45hf078075; Tue, 23 Jan 2024 10:04:06 -0600 From: Andrew Davis To: Bjorn Andersson , Baolin Wang CC: , , , Andrew Davis Subject: [PATCH 4/4] hwspinlock: omap: Use index to get hwspinlock pointer Date: Tue, 23 Jan 2024 10:04:05 -0600 Message-ID: <20240123160405.360437-4-afd@ti.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240123160405.360437-1-afd@ti.com> References: <20240123160405.360437-1-afd@ti.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 For loops with multiple initializers and increments are hard to read and reason about, simplify this by using the looping index to index into the hwspinlock array. Signed-off-by: Andrew Davis --- drivers/hwspinlock/omap_hwspinlock.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c index 1b0a1bea2b24a..a2555c41320d8 100644 --- a/drivers/hwspinlock/omap_hwspinlock.c +++ b/drivers/hwspinlock/omap_hwspinlock.c @@ -75,7 +75,6 @@ static const struct hwspinlock_ops omap_hwspinlock_ops = { static int omap_hwspinlock_probe(struct platform_device *pdev) { struct hwspinlock_device *bank; - struct hwspinlock *hwlock; void __iomem *io_base; int num_locks, i, ret; /* Only a single hwspinlock block device is supported */ @@ -117,8 +116,8 @@ static int omap_hwspinlock_probe(struct platform_device *pdev) if (!bank) return -ENOMEM; - for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++) - hwlock->priv = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i; + for (i = 0; i < num_locks; i++) + bank->lock[i].priv = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i; ret = devm_hwspin_lock_register(&pdev->dev, bank, &omap_hwspinlock_ops, base_id, num_locks);