From patchwork Mon May 27 16:14:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675598 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 C3B4C15F30A; Mon, 27 May 2024 16:15:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826505; cv=none; b=cgpw1J/EYqFzZk0J3mzLu0g+aV/pgtuiIMPE/eTvWJtm1gIXJdDAgKzlvzntofusJqyXty3kUoEX5ddjPmQZzuXVVr5iR7bYS7W8XkqPVubjSVJjtAloeSs71enpDPsmpvvHT2642HPyRfBTkgPFF8IFXKGXMae2fqs/C/PDTjo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826505; c=relaxed/simple; bh=0M1Hns7CDOYJ2aLM9KSawz/vJcM90IBbHl4CqMegdlE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Dsa9AiA6NrSyZLTYAyhddrLRg8uJigHZ6cBBrX8P+nC9ZAZNbFKRPsJNtGyiImDxuxojGaReH4V2N8yl+U/0ABOENGgbXV7oc6pcKsp+EY51eFjL/tPqzkykR6I3dV8AZWoZlNsng4O0VV7zna5ufnvRbJpRWtZHC7qLs87t/kQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=UbbkYHxY; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="UbbkYHxY" Received: by mail.gandi.net (Postfix) with ESMTPA id 6E42AFF811; Mon, 27 May 2024 16:14:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826500; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=W9+p1hma003opriOOEox9fT6iYMjtITIcW1ZIQ2QLNo=; b=UbbkYHxYIA3ApPt5oZI7rO4HRwWoAo+RNwHf495UokGST04QM/XPmwZtNfGcvXqNkTLLfv zPUvOe+3SPZsP9KT2IJxAesVe4FI9LV4C2BZTsojIVpNNUeFoesg2zWL8OJEA8+nRMAOHN K+llDN/wjyKrld3B3chDtl9+p+esUWB+dB8aE9FtPOBBFiQg0um64VbuBdlxOWQtqvk3OM W0JAOMp5UrAlcivoZaqFJ2Ggh8DZV8bwlkDnUzSnTShUs503r9tGo7Of+ahmFZI3fGyWJG U5aa5lsr0s8+nuyELHEYKPojqVP9Am8/bPDFC0Q/FPlAZ32lf/kjwEoYKm4y8A== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni , =?utf-8?b?Q2zDqW1lbnQgTMOp?= =?utf-8?b?Z2Vy?= Subject: [PATCH v2 01/19] mfd: syscon: Add reference counting and device managed support Date: Mon, 27 May 2024 18:14:28 +0200 Message-ID: <20240527161450.326615-2-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com From: Clément Léger Syscon releasing is not supported. Without release function, unbinding a driver that uses syscon whether explicitly or due to a module removal left the used syscon in a in-use state. For instance a syscon_node_to_regmap() call from a consumer retrieve a syscon regmap instance. Internally, syscon_node_to_regmap() can create syscon instance and add it to the existing syscon list. No API is available to release this syscon instance, remove it from the list and free it when it is not used anymore. Introduce reference counting in syscon in order to keep track of syscon usage using syscon_{get,put}() and add a device managed version of syscon_regmap_lookup_by_phandle(), to automatically release the syscon instance on the consumer removal. Signed-off-by: Clément Léger Signed-off-by: Herve Codina --- drivers/mfd/syscon.c | 145 ++++++++++++++++++++++++++++++++++--- include/linux/mfd/syscon.h | 18 +++++ 2 files changed, 154 insertions(+), 9 deletions(-) diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c index 7d0e91164cba..86898831b842 100644 --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -34,6 +34,7 @@ struct syscon { struct regmap *regmap; struct reset_control *reset; struct list_head list; + struct kref refcount; }; static const struct regmap_config syscon_regmap_config = { @@ -147,6 +148,8 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_res) syscon->regmap = regmap; syscon->np = np; + of_node_get(syscon->np); + kref_init(&syscon->refcount); spin_lock(&syscon_list_slock); list_add_tail(&syscon->list, &syscon_list); @@ -168,7 +171,30 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_res) return ERR_PTR(ret); } -static struct regmap *device_node_get_regmap(struct device_node *np, +static void syscon_free(struct kref *kref) +{ + struct syscon *syscon = container_of(kref, struct syscon, refcount); + + spin_lock(&syscon_list_slock); + list_del(&syscon->list); + spin_unlock(&syscon_list_slock); + + regmap_exit(syscon->regmap); + of_node_put(syscon->np); + kfree(syscon); +} + +static void syscon_get(struct syscon *syscon) +{ + kref_get(&syscon->refcount); +} + +static void syscon_put(struct syscon *syscon) +{ + kref_put(&syscon->refcount, syscon_free); +} + +static struct syscon *device_node_get_syscon(struct device_node *np, bool check_res) { struct syscon *entry, *syscon = NULL; @@ -183,9 +209,23 @@ static struct regmap *device_node_get_regmap(struct device_node *np, spin_unlock(&syscon_list_slock); - if (!syscon) + if (!syscon) { syscon = of_syscon_register(np, check_res); + if (IS_ERR(syscon)) + return ERR_CAST(syscon); + } else { + syscon_get(syscon); + } + + return syscon; +} +static struct regmap *device_node_get_regmap(struct device_node *np, + bool check_res) +{ + struct syscon *syscon; + + syscon = device_node_get_syscon(np, check_res); if (IS_ERR(syscon)) return ERR_CAST(syscon); @@ -198,12 +238,23 @@ struct regmap *device_node_to_regmap(struct device_node *np) } EXPORT_SYMBOL_GPL(device_node_to_regmap); -struct regmap *syscon_node_to_regmap(struct device_node *np) +static struct syscon *syscon_node_to_syscon(struct device_node *np) { if (!of_device_is_compatible(np, "syscon")) return ERR_PTR(-EINVAL); - return device_node_get_regmap(np, true); + return device_node_get_syscon(np, true); +} + +struct regmap *syscon_node_to_regmap(struct device_node *np) +{ + struct syscon *syscon; + + syscon = syscon_node_to_syscon(np); + if (IS_ERR(syscon)) + return ERR_CAST(syscon); + + return syscon->regmap; } EXPORT_SYMBOL_GPL(syscon_node_to_regmap); @@ -223,11 +274,11 @@ struct regmap *syscon_regmap_lookup_by_compatible(const char *s) } EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_compatible); -struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np, - const char *property) +static struct syscon *syscon_lookup_by_phandle(struct device_node *np, + const char *property) { struct device_node *syscon_np; - struct regmap *regmap; + struct syscon *syscon; if (property) syscon_np = of_parse_phandle(np, property, 0); @@ -237,12 +288,24 @@ struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np, if (!syscon_np) return ERR_PTR(-ENODEV); - regmap = syscon_node_to_regmap(syscon_np); + syscon = syscon_node_to_syscon(syscon_np); if (property) of_node_put(syscon_np); - return regmap; + return syscon; +} + +struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np, + const char *property) +{ + struct syscon *syscon; + + syscon = syscon_lookup_by_phandle(np, property); + if (IS_ERR(syscon)) + return ERR_CAST(syscon); + + return syscon->regmap; } EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_phandle); @@ -293,6 +356,70 @@ struct regmap *syscon_regmap_lookup_by_phandle_optional(struct device_node *np, } EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_phandle_optional); +static struct syscon *syscon_from_regmap(struct regmap *regmap) +{ + struct syscon *entry, *syscon = NULL; + + spin_lock(&syscon_list_slock); + + list_for_each_entry(entry, &syscon_list, list) + if (entry->regmap == regmap) { + syscon = entry; + break; + } + + spin_unlock(&syscon_list_slock); + + return syscon; +} + +void syscon_put_regmap(struct regmap *regmap) +{ + struct syscon *syscon; + + syscon = syscon_from_regmap(regmap); + if (!syscon) + return; + + syscon_put(syscon); +} +EXPORT_SYMBOL_GPL(syscon_put_regmap); + +static void devm_syscon_release(struct device *dev, void *res) +{ + syscon_put(*(struct syscon **)res); +} + +static struct regmap *__devm_syscon_get(struct device *dev, + struct syscon *syscon) +{ + struct syscon **ptr; + + if (IS_ERR(syscon)) + return ERR_CAST(syscon); + + ptr = devres_alloc(devm_syscon_release, sizeof(struct syscon *), GFP_KERNEL); + if (!ptr) { + syscon_put(syscon); + return ERR_PTR(-ENOMEM); + } + + *ptr = syscon; + devres_add(dev, ptr); + + return syscon->regmap; +} + +struct regmap *devm_syscon_regmap_lookup_by_phandle(struct device *dev, + struct device_node *np, + const char *property) +{ + struct syscon *syscon = syscon_lookup_by_phandle(np, property); + + return __devm_syscon_get(dev, syscon); +} +EXPORT_SYMBOL_GPL(devm_syscon_regmap_lookup_by_phandle); + static int syscon_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h index c315903f6dab..f742d865a37a 100644 --- a/include/linux/mfd/syscon.h +++ b/include/linux/mfd/syscon.h @@ -15,6 +15,7 @@ #include struct device_node; +struct device; #ifdef CONFIG_MFD_SYSCON struct regmap *device_node_to_regmap(struct device_node *np); @@ -28,6 +29,11 @@ struct regmap *syscon_regmap_lookup_by_phandle_args(struct device_node *np, unsigned int *out_args); struct regmap *syscon_regmap_lookup_by_phandle_optional(struct device_node *np, const char *property); +void syscon_put_regmap(struct regmap *regmap); + +struct regmap *devm_syscon_regmap_lookup_by_phandle(struct device *dev, + struct device_node *np, + const char *property); #else static inline struct regmap *device_node_to_regmap(struct device_node *np) { @@ -67,6 +73,18 @@ static inline struct regmap *syscon_regmap_lookup_by_phandle_optional( return NULL; } +static inline void syscon_put_regmap(struct regmap *regmap) +{ +} + +static inline +struct regmap *devm_syscon_regmap_lookup_by_phandle(struct device *dev, + struct device_node *np, + const char *property) +{ + return NULL; +} + #endif #endif /* __LINUX_MFD_SYSCON_H__ */ From patchwork Mon May 27 16:14:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675599 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 9FBFA16078E; Mon, 27 May 2024 16:15:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826506; cv=none; b=ajiB0L4U92AFVnT35+Lzeftr1Aclcd8OwSPfutVNKG2LaRMuSIsceO/qpBPa+gFwGkeRcO24axMv8bpEZnemkmSRS+u56JKQnin7bQIpwCdIWDFNeOYphEJwYHvOPyDfRBF44drWI0q5lgP5E1Q3cqHSiuXRXzAh49XAhflr7GI= ARC-Message-Signature: i=1; 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Mon, 27 May 2024 16:15:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826502; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8S9HiRmD7ovcxff043VP95jHFoFGaOl6oxz7Gv5SNN4=; b=pFkYcNiUq3y/4YP7LiY9gtczT6m+41iaptEO7DywyrCqHENh/tAErsMFgPSmcHqWvdKuLz bJ/LNVBq5QBDDzZOhMO22/bEwf8kvqA7N3Tsx7XwRZw7J20cGs1UgugTBMYb+R0UjZTPyy yAHcT6sr0v6rkTLx5CXukbDnHEWhmZJ3nWK868twACWXKwBisuQzsy8+wVSeGdQOhnKstv 3GetjKWZCUiQ3RoTcUeHJgHuakL/AH/O4jTb4gxlrjM8rDmBuh5BDkbAC+hyclfbXAHmbg +3sXw57ZjX4sbs5wkJ1JQGPoB+FEtMtxqjO0gnHcFYOkH+4dUocmU7uc++H+Nw== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni , =?utf-8?b?Q2zDqW1lbnQgTMOp?= =?utf-8?b?Z2Vy?= Subject: [PATCH v2 02/19] reset: mchp: sparx5: Remove dependencies and allow building as a module Date: Mon, 27 May 2024 18:14:29 +0200 Message-ID: <20240527161450.326615-3-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com From: Clément Léger The sparx5 reset controller depends on the SPARX5 architecture or the LAN966x SoC. This reset controller can be used by the LAN966x PCI device and so it needs to be available on all architectures. Also the LAN966x PCI device driver can be built as a module and this reset controller driver has no reason to be a builtin driver in that case. Signed-off-by: Clément Léger Signed-off-by: Herve Codina --- drivers/reset/Kconfig | 3 +-- drivers/reset/reset-microchip-sparx5.c | 2 ++ 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 7112f5932609..fb9005e2f5b5 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -124,8 +124,7 @@ config RESET_LPC18XX This enables the reset controller driver for NXP LPC18xx/43xx SoCs. config RESET_MCHP_SPARX5 - bool "Microchip Sparx5 reset driver" - depends on ARCH_SPARX5 || SOC_LAN966 || COMPILE_TEST + tristate "Microchip Sparx5 reset driver" default y if SPARX5_SWITCH select MFD_SYSCON help diff --git a/drivers/reset/reset-microchip-sparx5.c b/drivers/reset/reset-microchip-sparx5.c index 636e85c388b0..69915c7b4941 100644 --- a/drivers/reset/reset-microchip-sparx5.c +++ b/drivers/reset/reset-microchip-sparx5.c @@ -158,6 +158,7 @@ static const struct of_device_id mchp_sparx5_reset_of_match[] = { }, { } }; +MODULE_DEVICE_TABLE(of, mchp_sparx5_reset_of_match); static struct platform_driver mchp_sparx5_reset_driver = { .probe = mchp_sparx5_reset_probe, @@ -180,3 +181,4 @@ postcore_initcall(mchp_sparx5_reset_init); MODULE_DESCRIPTION("Microchip Sparx5 switch reset driver"); MODULE_AUTHOR("Steen Hegelund "); +MODULE_LICENSE("GPL"); From patchwork Mon May 27 16:14:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675600 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 6B240161305; Mon, 27 May 2024 16:15:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826508; cv=none; b=Hcdz6jup2RAjPNwLd6ZnQ+FAnRB366oMePrPUp4vRoftz9dcmB/xahx2Eqj6aHA189rQDRVcbSx8AWxJ9CigwZnoyneFDU75MbN2f3fUszvVtdTlbvlBB5fazXNOzJ0IlKBfMPXA31g58Uu1HKB0Rv5x0LCAeB1dCBU/7mmJ+44= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826508; c=relaxed/simple; bh=wDXdXZDe5krRitdqjY8S6IfoignV9HVmYqJZDUl7H6c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=fYlssVil9zusyPinWdXvigVb5Cy1EhtZYX0fszBQuBri5Bozk5ggjnUlIRQfh+6MMUDRjG439OrNeAsIXZGV10qY6fIUDX3KWGi5utXq5Z7bmUIVu6uoOxy7YVG6bv3pnHIK8RJAnb4ZQszjwkIvPAaAxizeAS8lkbovNk4Qo7s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=LtHFpVXe; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="LtHFpVXe" Received: by mail.gandi.net (Postfix) with ESMTPA id 32A06FF814; Mon, 27 May 2024 16:15:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826503; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L6TlKweuD4lCqBxL9SdGBmVX01IhcfhXMnuiuGHqhBE=; b=LtHFpVXekRIXkrs7LdaUhIszxGChykZckIjc6rfeFQbR143lKPfrrkGozoUsSbCANSU8G+ DAmdTGQug3jbxQXkSTixWiSMeho85cZrdJXuo8EvFlE3CJvBN0k0WQeQ6D2JJPS8XAK+ix /JsVq2vmdTcuL0T+uKMtiOoU0UBJDVOTssifl+cnHUXqh6AIRVT90KgZLq7IGwru/d2Q8L wrzKQiNZSdgUopemE8Ppfor34GyNDBJIa8XNtOrtHgsMx3wdVvbs6A7P/Zs8oXUNHVprrH ZJgCcgoKQw5Cz/ep1BehMie58Ui9546uvoVSMLXNrFa4o2I72pRBJut3359Lng== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni , =?utf-8?b?Q2zDqW1lbnQgTMOp?= =?utf-8?b?Z2Vy?= Subject: [PATCH v2 03/19] reset: mchp: sparx5: Release syscon when not use anymore Date: Mon, 27 May 2024 18:14:30 +0200 Message-ID: <20240527161450.326615-4-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com From: Clément Léger The sparx5 reset controller does not release syscon when it is not used anymore. This reset controller is used by the LAN966x PCI device driver. It can be removed from the system at runtime and needs to release its consumed syscon on removal. Use the newly introduced devm_syscon_regmap_lookup_by_phandle() in order to get the syscon and automatically release it on removal. Signed-off-by: Clément Léger Signed-off-by: Herve Codina --- drivers/reset/reset-microchip-sparx5.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/reset/reset-microchip-sparx5.c b/drivers/reset/reset-microchip-sparx5.c index 69915c7b4941..c4fe65291a43 100644 --- a/drivers/reset/reset-microchip-sparx5.c +++ b/drivers/reset/reset-microchip-sparx5.c @@ -65,15 +65,11 @@ static const struct reset_control_ops sparx5_reset_ops = { static int mchp_sparx5_map_syscon(struct platform_device *pdev, char *name, struct regmap **target) { - struct device_node *syscon_np; + struct device *dev = &pdev->dev; struct regmap *regmap; int err; - syscon_np = of_parse_phandle(pdev->dev.of_node, name, 0); - if (!syscon_np) - return -ENODEV; - regmap = syscon_node_to_regmap(syscon_np); - of_node_put(syscon_np); + regmap = devm_syscon_regmap_lookup_by_phandle(dev, dev->of_node, name); if (IS_ERR(regmap)) { err = PTR_ERR(regmap); dev_err(&pdev->dev, "No '%s' map: %d\n", name, err); From patchwork Mon May 27 16:14:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675601 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 3D1C6167291; Mon, 27 May 2024 16:15:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826510; cv=none; b=JaaW2OZ4OBAp4r2Z4CiWBz8oUIZcPLk23iBp2vLI/qygpxwxZm/yS4/Q18tcRRqZoqGYk70pMGq7KpRDEiNx4eNdfMamA5vpCKRqL5VQIM72ce9QCvDQxufHY2Irmp8yLK8t27chc4Hl8hyF3ZT9ZwzFBC/WJ0Ea+2LW0NCxBAg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826510; c=relaxed/simple; bh=E2Nmsu/7HYQLnn0sN5b1S2heBsMjF3oRWqAoBIGaDBE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XV8ZAf7CZVIDpobj8Ji6/XJ6Ov3FQV1zEzO346gEmDuNBMaYH7XGE0DqREUfqr3INap07sGs5ny1nRAenGadXYV/aT86NqnILY/AOFNSnYg1w9rIa4SIb4mOxnLm3ZDlnH/+G8XKR/e00NHyyZpE9SOEoJPVHRgiuWuYTIzPf5s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=EengVC3r; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="EengVC3r" Received: by mail.gandi.net (Postfix) with ESMTPA id E54D5FF810; Mon, 27 May 2024 16:15:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826505; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bOAN8DOKAutpcJ98IdSxdr6GKYFYp22/ixh21amGeTg=; b=EengVC3rkV2AdgX2gUMxvuPJrkjrG9Id9BGc2TzsDfOh9F9xdVgWDv7UaVJztjDqCVoZTa KlGs1D+C8gveTFGS1Dn7nYjiR+WS+GlxfpSazJxn8Uy8QgbcACVwbZ7xDBymiBlFk6UG4D 4jjuKtCigVm/JuJ9mSlrx9euQ5TyAXK93RvGrUwa4FbvBahFUGbIt1id8TecYs9kKirod2 dSfgpdAzePZG8UOgAxH3RLpxWOvMoQcu8ttprKDI23osJb8s2z4xkvl+lAcdgAithHghe0 1JUCFiZgfvMp6eRZDamI9S69eDFVHXSWRBsij5GN7su9cWMuhV55MN+VSg0sRA== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni , =?utf-8?b?Q2zDqW1lbnQgTMOp?= =?utf-8?b?Z2Vy?= Subject: [PATCH v2 04/19] reset: core: add get_device()/put_device on rcdev Date: Mon, 27 May 2024 18:14:31 +0200 Message-ID: <20240527161450.326615-5-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com From: Clément Léger Since the rcdev structure is allocated by the reset controller drivers themselves, they need to exists as long as there is a consumer. A call to module_get() is already existing but that does not work when using device-tree overlays. In order to guarantee that the underlying reset controller device does not vanish while using it, add a get_device() call when retrieving a reset control from a reset controller device and a put_device() when releasing that control. Signed-off-by: Clément Léger Signed-off-by: Herve Codina --- drivers/reset/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/reset/core.c b/drivers/reset/core.c index dba74e857be6..999c3c41cf21 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -812,6 +812,7 @@ __reset_control_get_internal(struct reset_controller_dev *rcdev, kref_init(&rstc->refcnt); rstc->acquired = acquired; rstc->shared = shared; + get_device(rcdev->dev); return rstc; } @@ -826,6 +827,7 @@ static void __reset_control_release(struct kref *kref) module_put(rstc->rcdev->owner); list_del(&rstc->list); + put_device(rstc->rcdev->dev); kfree(rstc); } From patchwork Mon May 27 16:14:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675602 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 BB929167DA2; Mon, 27 May 2024 16:15:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826510; cv=none; b=JVFeQeWGpXmGfqHdcnuAK9sfn1C6xaPBqmh7p5iueqbOh3F9KO56d+saY3PRm7hbmLXbeNqyUEIrvUbiehFEmiJimaywd0XaQGIvrtIqvtKDdlAzF1bpm+Hfc/Aab2XaCajSTvoJJUNf8i5r5Gk0sNFjVMeybMW6CO11ogOEfF0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826510; c=relaxed/simple; bh=nhPkf7wgseJDhZAtkhb42G6JXubPm9Ki2AQx9/jbUDc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jGJIaDnWaMcUm6SkZsC7JYkPdb+gLDY/TMLGvmCbdAQWCRm+EdTocjwbFvvLRA5nz5Z9GIrSDRkfnHwMTGZpGla3fu5Y9W2xgmV7L08LrkkkDpYPY6RRXnKl8b/q/lZkKfwRDKYizI+cj0lOB/LT/5MqQjNZfSWEpjkWH0vgur8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=VSglVmn7; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="VSglVmn7" Received: by mail.gandi.net (Postfix) with ESMTPA id 93DE4FF806; Mon, 27 May 2024 16:15:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826507; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9I+0v1qx7CVrOS1djilPmB0cdboViIJolbKDdwWOXOM=; b=VSglVmn7Gn5q7PaPZMeEM6bfECigH6tLaVL8NUWhNemTLBGEvNVJLcDc6T9YvDDkvlxpjA fV//LwGH4SIqSRUZ8fchGyyAHLCwUO1EXWoBMtPB1RhydP/9eFwQUrOesXwA9gH1yQ2vPA MxSsABRZAWuMDHGtmrnTinbeyNYmMuf8wWfsxPBZoTz1/F7TDv8kUPOt0kvB+y3R60Pz+b 1exgfqi4TxCVfhyIXuojkmJ7CZntnwnOOcOhTi9FW/p/2rypSK+b4fEZc0WdCEbaG6glRc yF0LCz3RVqU1Oyk/3So6CSacY7kNkZH1rF5iDA2YzcJMkU4McNqY44TRBLP7iA== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni , =?utf-8?b?Q2zDqW1lbnQgTMOp?= =?utf-8?b?Z2Vy?= Subject: [PATCH v2 05/19] reset: mchp: sparx5: set the dev member of the reset controller Date: Mon, 27 May 2024 18:14:32 +0200 Message-ID: <20240527161450.326615-6-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com From: Clément Léger In order to guarantee the device will not be deleted by the reset controller consumer, set the dev member of the reset controller. Signed-off-by: Clément Léger Signed-off-by: Herve Codina --- drivers/reset/reset-microchip-sparx5.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/reset/reset-microchip-sparx5.c b/drivers/reset/reset-microchip-sparx5.c index c4fe65291a43..1ef2aa1602e3 100644 --- a/drivers/reset/reset-microchip-sparx5.c +++ b/drivers/reset/reset-microchip-sparx5.c @@ -117,6 +117,7 @@ static int mchp_sparx5_reset_probe(struct platform_device *pdev) return err; ctx->rcdev.owner = THIS_MODULE; + ctx->rcdev.dev = &pdev->dev; ctx->rcdev.nr_resets = 1; ctx->rcdev.ops = &sparx5_reset_ops; ctx->rcdev.of_node = dn; From patchwork Mon May 27 16:14:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675603 X-Patchwork-Delegate: kuba@kernel.org Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 668E2168C1B; Mon, 27 May 2024 16:15:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826512; cv=none; b=L6bq3vcR+4ub2en3aHW6aB2W5olJuBPqewLtKuOpOjE0HyGcn+EKcCoXdhteoSeSX9nwqrA+ztDGpWKRBoIQweGNTzzBIbvqO+xTEYgd4Po2SeAz1KO4dna5oH55+/ay2x19U52C6vih8VYVnIPydc28cz8cvF+FTl3uWhmw9Mk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826512; c=relaxed/simple; bh=8rQevD0p2EIlB6l1UzGKlfOUztYoACQa5oVZsG20auo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jFLPU5vlkZlHg2MRVf5iDXkySf9wxgwqE2gagt/qqPPMelaY9jypWOAOuxdjOfiQllePxzl5cFWJVC8kGCdkkSEYDqgBsLFzRZwY3MC2z4eMHMorowE1zjlyhDjXTyptBuza7BFD+E6yUCSU7FIZXNOXMhRcTlzAGy66vN9+TLg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=HGpU54Uz; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="HGpU54Uz" Received: by mail.gandi.net (Postfix) with ESMTPA id 4BE5EFF80E; Mon, 27 May 2024 16:15:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826508; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zWQ4pALLF6bGmnAFbKQRjFHNe+9gr/WCo0qJyEdw0yk=; b=HGpU54UzdbtSbUfc2EUxjmVB0KjJahFF3GnvKVAEiGK87T93BSwa7FlnqITkjQiiOfYsNQ 0Gk7FKigATJDlt3kWJwQ6eNKB3sWxnuH2ynoxHKaNvexx+ZwGf6MUhnXtjmmAFQiJo3YXW wcBhp7lJmxo5kGgZMS/8ncSj5/BIADqLWOWJiySSXxQTwZRdlr77CAU8EPxr7BJ1UdhKgo dTitdHIaZ1jy9T8HD4nYngff4qatZseMmIQeSnw9k7dII4cv7jIFPZYSB+QRACjzGBi8TD eSaGk0t5ZTyzEKmOi5cZr7lwpgHMD7cvpzruT8DT4YcVyC4U0OQNAMjDys2yHA== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 06/19] dt-bindings: net: mscc-miim: Add resets property Date: Mon, 27 May 2024 18:14:33 +0200 Message-ID: <20240527161450.326615-7-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com X-Patchwork-Delegate: kuba@kernel.org Add the (optional) resets property. The mscc-miim device is impacted by the switch reset especially when the mscc-miim device is used as part of the LAN966x PCI device. Signed-off-by: Herve Codina Reviewed-by: Andrew Lunn Acked-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/net/mscc,miim.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/net/mscc,miim.yaml b/Documentation/devicetree/bindings/net/mscc,miim.yaml index 5b292e7c9e46..c67e8caa36cf 100644 --- a/Documentation/devicetree/bindings/net/mscc,miim.yaml +++ b/Documentation/devicetree/bindings/net/mscc,miim.yaml @@ -38,6 +38,17 @@ properties: clock-frequency: true + resets: + items: + - description: + Optional shared switch reset. + This reset is shared with all blocks attached to the Switch Core + Register Bus (CSR) including VRAP slave. + + reset-names: + items: + - const: switch + required: - compatible - reg From patchwork Mon May 27 16:14:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675604 X-Patchwork-Delegate: kuba@kernel.org Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 8E949169387; Mon, 27 May 2024 16:15:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826514; cv=none; b=HBHQcKCHVy+myPxVSFxWOqLJBAHJu8SPWPToPtzNs0msFWcpwgxosZNj7gE7FLSarL5a9hcZndQjJamQvv0T7WjovTHTY3nEjp7dERd05gudVOf2fFNVylbIKnDdi13YUpn4q+4bDxo0AqoIesiriJBTuS6oRFpVu2xd1HlxCrA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826514; c=relaxed/simple; bh=7biFMyr8CXy0R1UVAUiDgnLTqYU6ZUjkIFA6XHx8ITY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V8VJ5NYpgaCl8t3tUoHktzoGSHWdzjG83vWiqzrBPq2woHxDSo6vWUZxPqnEjsStIt7oWXyhuohe9YOGU7mJ5noL1nUgfFE+eZ1cf7VQmrZoAZEl+MQxHr5gxlEQ69rkfu1QtGrOsvTMx7hvwlen6d6w/zQnT9FfnvmNAL09uXc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=nRG74e6A; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="nRG74e6A" Received: by mail.gandi.net (Postfix) with ESMTPA id E9899FF80C; Mon, 27 May 2024 16:15:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826511; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C0FElzUrrqTg+6Zrh4rlEJ/rv8Dcx7Vbub0Y2cEk6FE=; b=nRG74e6ADGPIgwQsZuZBPe2LcWBuaXAzegAM7AbrhXlZhxCR880uyAgg/LWEAxtQpaMRmE AQqGHgGFzWjTc6p2gKF1Iaz1tIPSpYJjQDvQDTa08KCTB82evOwKwFxsQhGn2LHimY6Pot dWuga1MB+Dc00u7OKeXCacQQOqOOLOYWWKs1uwwDD6w7GMynB9tFljHGdHiWZFKa0XZ2gK pqAvbGL59bvXUHBIH4bxYe2sm+fj3RpXGgZaZ6frFHlmaxkw4gOqSYbKsjJuz1hQbOUX6p 178Afcvx1Hz6ie/kn6DykBmZQBr+6SFaxhSHJB45DFaZCXgHrD4ZpzafnzJovA== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 07/19] net: mdio: mscc-miim: Handle the switch reset Date: Mon, 27 May 2024 18:14:34 +0200 Message-ID: <20240527161450.326615-8-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com X-Patchwork-Delegate: kuba@kernel.org The mscc-miim device can be impacted by the switch reset, at least when this device is part of the LAN966x PCI device. Handle this newly added (optional) resets property. Signed-off-by: Herve Codina Reviewed-by: Andrew Lunn --- drivers/net/mdio/mdio-mscc-miim.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/mdio/mdio-mscc-miim.c b/drivers/net/mdio/mdio-mscc-miim.c index c29377c85307..62c47e0dd142 100644 --- a/drivers/net/mdio/mdio-mscc-miim.c +++ b/drivers/net/mdio/mdio-mscc-miim.c @@ -19,6 +19,7 @@ #include #include #include +#include #define MSCC_MIIM_REG_STATUS 0x0 #define MSCC_MIIM_STATUS_STAT_PENDING BIT(2) @@ -271,10 +272,17 @@ static int mscc_miim_probe(struct platform_device *pdev) struct device_node *np = pdev->dev.of_node; struct regmap *mii_regmap, *phy_regmap; struct device *dev = &pdev->dev; + struct reset_control *reset; struct mscc_miim_dev *miim; struct mii_bus *bus; int ret; + reset = devm_reset_control_get_optional_shared(dev, "switch"); + if (IS_ERR(reset)) + return dev_err_probe(dev, PTR_ERR(reset), "Failed to get reset\n"); + + reset_control_reset(reset); + mii_regmap = ocelot_regmap_from_resource(pdev, 0, &mscc_miim_regmap_config); if (IS_ERR(mii_regmap)) From patchwork Mon May 27 16:14:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675605 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 436C2169380; Mon, 27 May 2024 16:15:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826517; cv=none; b=ieiG4MeiaJBlifaiaermQZQvFIoIWoZdtwhZrmKPK/oFHI0Jt+Clffahydjv6zRDkqK8Rl8d1piiJDEe0HbyHo05G695FHPrLpF5Me1XQej4PWY5U7b23cjJLbULqnrYZTi1BnS/HLDHaK2dwG20PYP5AnI90GtkOuvHGudddso= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826517; c=relaxed/simple; bh=/RI6whJcmrvhiRO7t2XvDhnsZ9qXtW9I/fr2BpEIl5U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PhaVydLQEfWGLHpDNDoNaRcneuNbvo2PUXZoKRKJfmv4m56KP/tBMCLq0Ug8MhLSa1CfBXThL7Wb7rAaALcs14CSbeq5qpQGrpsZ1iXoadVmb+9oz1p5lBtAV/mpeZnrVMYTIzQPKmvtnly0xeTgJyeCHAbTek+yXSC1WTe3+jw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=E8RHx6bg; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="E8RHx6bg" Received: by mail.gandi.net (Postfix) with ESMTPA id 3B155FF813; Mon, 27 May 2024 16:15:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826512; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1poOcFigCzvNGw/WIJa8uOgiTHrPvQYSCIrCvjonocA=; b=E8RHx6bg0cF5LcM53jS29vWdjSIUAfGgiMFIQZrgsLMstByXtH7NJXiQJ6+bi6+R8fMCEb 3rxCEVmRomYWYdekf/v32aXiE/9kFgvfZZep3JjemaR2oc9Oi9fbofn7AQ2icmXBD8eHBa GC0pb1A6DKk57ByjVD/13ZXC7MlTMtl4vacsij06M/vPt9WX1seXrUsX1Rc2QM2ixdJKyr 6APNKUol5ce/eZgE+gC8RriHVrTplJbCdCwowrgln8PDOmiFvzysRxa0EuWW5QEXI66ahi p3CmuamZHy+oEF510shOM2HKhNsX52WKDSYZGEQrVioInDz5S2hjQ8+m5Se/2Q== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 08/19] dt-bindings: interrupt-controller: Add support for Microchip LAN966x OIC Date: Mon, 27 May 2024 18:14:35 +0200 Message-ID: <20240527161450.326615-9-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com The Microchip LAN966x outband interrupt controller (OIC) maps the internal interrupt sources of the LAN966x device to an external interrupt. When the LAN966x device is used as a PCI device, the external interrupt is routed to the PCI interrupt. Signed-off-by: Herve Codina Reviewed-by: Rob Herring (Arm) --- .../microchip,lan966x-oic.yaml | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/microchip,lan966x-oic.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/microchip,lan966x-oic.yaml b/Documentation/devicetree/bindings/interrupt-controller/microchip,lan966x-oic.yaml new file mode 100644 index 000000000000..b2adc7174177 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/microchip,lan966x-oic.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/microchip,lan966x-oic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip LAN966x outband interrupt controller + +maintainers: + - Herve Codina + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +description: | + The Microchip LAN966x outband interrupt controller (OIC) maps the internal + interrupt sources of the LAN966x device to an external interrupt. + When the LAN966x device is used as a PCI device, the external interrupt is + routed to the PCI interrupt. + +properties: + compatible: + const: microchip,lan966x-oic + + '#interrupt-cells': + const: 2 + + interrupt-controller: true + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - '#interrupt-cells' + - interrupt-controller + - interrupts + - reg + +additionalProperties: false + +examples: + - | + interrupt-controller@e00c0120 { + compatible = "microchip,lan966x-oic"; + reg = <0xe00c0120 0x190>; + #interrupt-cells = <2>; + interrupt-controller; + interrupts = <0>; + interrupt-parent = <&intc>; + }; +... From patchwork Mon May 27 16:14:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675606 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 CA88416078F; Mon, 27 May 2024 16:15:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826518; cv=none; b=RV59xGQYAIlxlwWZoMarXwfgco+vUfx+GKzRaD8L6F5craUEvNp+QWREFSrT+10LoSlY1jyU/mN53TpQBddwzYiJquwElIub5i6vvIToBx7MeauqhVmZsgxtuz8ZBscBqUtBW4KtlUlTng5ZJg3wmjIGRg0PqaEGkX1uqBh56CQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826518; c=relaxed/simple; bh=SWk5vonVG5e7P8hVz9wxahmL3ihBK/v20lKtBj8oZs4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=B2uRC5ov3mRUDIqsecFZcg92oUQLV8TUld73WaCG22mjM6Y/e+AomFEAYYHc9pfuYIU+aUX0Bsw5Ddvlmy6dWoGQo8HKSfniLGpKijnmoUL1BKDVmV0henk1oLXQkL07x5Ff0B9D/XvhM4LcbkNat3BDxpEMn6yM68Vn4ulErcU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=QLQ/luKn; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="QLQ/luKn" Received: by mail.gandi.net (Postfix) with ESMTPA id D7790FF812; Mon, 27 May 2024 16:15:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826514; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cHznhiXiwWKJVWaiiQdYYwLlbRzFssggqMn3mMXWlQs=; b=QLQ/luKn4+ghM6v9/p8DpdWBEA3GwVIQLBiLX7mC0xBsAGC+kFA/Na9ucOwoyKROROd+Lr 16cLBhXSYGv0GG0JVVSWT94LuoTJxfswQ17QnWycK2Afpjd7TxQHaeOW9haF+r5AXTVDMS zHxJ6fSDj3ZOKRT+SW5Uc8zrHcGMcsJC7r59mmwJDO8CNyxzPWGlX37RalyfCdMnfa81cG hbfSprCnq1crc7gNcJneranGveI/WVMhQLiESWm6ktrlaDD46VemSHoM+v7j3Twffznuum J4M6XtZ0cAiwM4hxVKtekaWam8Hq4l+foq1bxe791CUNmChG5bseU8LW5xKK8g== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 09/19] irqdomain: Add missing parameter descriptions in docs Date: Mon, 27 May 2024 18:14:36 +0200 Message-ID: <20240527161450.326615-10-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com During compilation, several warning of the following form were raised: Function parameter or struct member 'x' not described in 'yyy' Add the missing function parameter descriptions. Signed-off-by: Herve Codina --- kernel/irq/irqdomain.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index aadc8891cc16..86f8b91b0d3a 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -111,6 +111,7 @@ EXPORT_SYMBOL_GPL(__irq_domain_alloc_fwnode); /** * irq_domain_free_fwnode - Free a non-OF-backed fwnode_handle + * @fwnode: fwnode_handle to free * * Free a fwnode_handle allocated with irq_domain_alloc_fwnode. */ @@ -982,6 +983,12 @@ EXPORT_SYMBOL_GPL(__irq_resolve_mapping); /** * irq_domain_xlate_onecell() - Generic xlate for direct one cell bindings + * @d: Interrupt domain involved in the translation + * @ctrlr: The device tree node for the device whose interrupt is translated + * @intspec: The interrupt specifier data from the device tree + * @intsize: The number of entries in @intspec + * @out_hwirq: Pointer to storage for the hardware interrupt number + * @out_type: Pointer to storage for the interrupt type * * Device Tree IRQ specifier translation function which works with one cell * bindings where the cell value maps directly to the hwirq number. @@ -1000,6 +1007,12 @@ EXPORT_SYMBOL_GPL(irq_domain_xlate_onecell); /** * irq_domain_xlate_twocell() - Generic xlate for direct two cell bindings + * @d: Interrupt domain involved in the translation + * @ctrlr: The device tree node for the device whose interrupt is translated + * @intspec: The interrupt specifier data from the device tree + * @intsize: The number of entries in @intspec + * @out_hwirq: Pointer to storage for the hardware interrupt number + * @out_type: Pointer to storage for the interrupt type * * Device Tree IRQ specifier translation function which works with two cell * bindings where the cell values map directly to the hwirq number @@ -1018,6 +1031,12 @@ EXPORT_SYMBOL_GPL(irq_domain_xlate_twocell); /** * irq_domain_xlate_onetwocell() - Generic xlate for one or two cell bindings + * @d: Interrupt domain involved in the translation + * @ctrlr: The device tree node for the device whose interrupt is translated + * @intspec: The interrupt specifier data from the device tree + * @intsize: The number of entries in @intspec + * @out_hwirq: Pointer to storage for the hardware interrupt number + * @out_type: Pointer to storage for the interrupt type * * Device Tree IRQ specifier translation function which works with either one * or two cell bindings where the cell values map directly to the hwirq number @@ -1051,6 +1070,10 @@ EXPORT_SYMBOL_GPL(irq_domain_simple_ops); /** * irq_domain_translate_onecell() - Generic translate for direct one cell * bindings + * @d: Interrupt domain involved in the translation + * @fwspec: The firmware interrupt specifier to translate + * @out_hwirq: Pointer to storage for the hardware interrupt number + * @out_type: Pointer to storage for the interrupt type */ int irq_domain_translate_onecell(struct irq_domain *d, struct irq_fwspec *fwspec, @@ -1068,6 +1091,10 @@ EXPORT_SYMBOL_GPL(irq_domain_translate_onecell); /** * irq_domain_translate_twocell() - Generic translate for direct two cell * bindings + * @d: Interrupt domain involved in the translation + * @fwspec: The firmware interrupt specifier to translate + * @out_hwirq: Pointer to storage for the hardware interrupt number + * @out_type: Pointer to storage for the interrupt type * * Device Tree IRQ specifier translation function which works with two cell * bindings where the cell values map directly to the hwirq number From patchwork Mon May 27 16:14:37 2024 Content-Type: text/plain; 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bh=Mi3oj3KqfvDzq+/15bPMcWypI2LWK0r10UEBjijnOtc=; b=jPHjua9WxG50yVIdqMNDLvOGQkQ6iB4QYm/1BGyxgTb8OooPHLqIJLy60UGGZXbIaxDabh pPwkbWZxBGOXlZV1InZfo4OhQlP68xHlK+trSLZ43n7dfRalP7Sbu0nRxGRb4Zchwpp2af LeGKWTAEnleyERDMXp34zfuDP8pzZDx22iB0CHstGcAwBtpK48FI1m5zkI/J4kq1c/MQmG kTftzwBFldi7v+VE0xn3HBxR8Jku6AQ3puEOoTRhmEHrVYtSkmYNZAx1SGktc5is99y3ii Mm4FGQ3Wo2H18jkER+EKHkcMdMh7L1ALa6QmzwRTfI9Jx8aiq6vdAP8rBBQmXg== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 10/19] irqdomain: Introduce irq_domain_alloc() and irq_domain_publish() Date: Mon, 27 May 2024 18:14:37 +0200 Message-ID: <20240527161450.326615-11-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com The irq_domain_add_*() family functions create an irq_domain and also publish this newly created to domain. Once an irq_domain is published, consumers can request IRQ in order to use them. Some interrupt controller drivers have to perform some more operations with the created irq_domain in order to have it ready to be used. For instance: - Allocate generic irq chips with irq_alloc_domain_generic_chips() - Retrieve the generic irq chips with irq_get_domain_generic_chip() - Initialize retrieved chips: set register base address and offsets, set several hooks such as irq_mask, irq_unmask, ... To avoid a window where the domain is published but not yet ready to be used, introduce irq_domain_alloc_*() family functions to create the irq_domain and irq_domain_publish() to publish the irq_domain. With this new functions, any additional initialisation can then be done between the call creating the irq_domain and the call publishing it. Signed-off-by: Herve Codina --- include/linux/irqdomain.h | 16 +++++++ kernel/irq/irqdomain.c | 91 ++++++++++++++++++++++++++++----------- 2 files changed, 82 insertions(+), 25 deletions(-) diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 21ecf582a0fe..86203e7e6659 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -257,6 +257,22 @@ static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa) } void irq_domain_free_fwnode(struct fwnode_handle *fwnode); +struct irq_domain *irq_domain_alloc(struct fwnode_handle *fwnode, unsigned int size, + irq_hw_number_t hwirq_max, int direct_max, + const struct irq_domain_ops *ops, + void *host_data); + +static inline struct irq_domain *irq_domain_alloc_linear(struct fwnode_handle *fwnode, + unsigned int size, + const struct irq_domain_ops *ops, + void *host_data) +{ + return irq_domain_alloc(fwnode, size, size, 0, ops, host_data); +} + +void irq_domain_free(struct irq_domain *domain); +void irq_domain_publish(struct irq_domain *domain); +void irq_domain_unpublish(struct irq_domain *domain); struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size, irq_hw_number_t hwirq_max, int direct_max, const struct irq_domain_ops *ops, diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 86f8b91b0d3a..06c3e1b03a1d 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -231,7 +231,38 @@ static struct irq_domain *__irq_domain_create(struct fwnode_handle *fwnode, return domain; } -static void __irq_domain_publish(struct irq_domain *domain) +struct irq_domain *irq_domain_alloc(struct fwnode_handle *fwnode, unsigned int size, + irq_hw_number_t hwirq_max, int direct_max, + const struct irq_domain_ops *ops, + void *host_data) +{ + return __irq_domain_create(fwnode, size, hwirq_max, direct_max, ops, + host_data); +} +EXPORT_SYMBOL_GPL(irq_domain_alloc); + +/** + * irq_domain_free() - Free an irq domain. + * @domain: domain to free + * + * This routine is used to free an irq domain. The caller must ensure + * that the domain is not published. + */ +void irq_domain_free(struct irq_domain *domain) +{ + fwnode_dev_initialized(domain->fwnode, false); + fwnode_handle_put(domain->fwnode); + if (domain->flags & IRQ_DOMAIN_NAME_ALLOCATED) + kfree(domain->name); + kfree(domain); +} +EXPORT_SYMBOL_GPL(irq_domain_free); + +/** + * irq_domain_publish() - Publish an irq domain. + * @domain: domain to publish + */ +void irq_domain_publish(struct irq_domain *domain) { mutex_lock(&irq_domain_mutex); debugfs_add_domain_dir(domain); @@ -240,6 +271,36 @@ static void __irq_domain_publish(struct irq_domain *domain) pr_debug("Added domain %s\n", domain->name); } +EXPORT_SYMBOL_GPL(irq_domain_publish); + +/** + * irq_domain_unpublish() - Unpublish an irq domain. + * @domain: domain to unpublish + * + * This routine is used to unpublish an irq domain. The caller must ensure + * that all mappings within the domain have been disposed of prior to + * use, depending on the revmap type. + */ +void irq_domain_unpublish(struct irq_domain *domain) +{ + mutex_lock(&irq_domain_mutex); + debugfs_remove_domain_dir(domain); + + WARN_ON(!radix_tree_empty(&domain->revmap_tree)); + + list_del(&domain->link); + + /* + * If the going away domain is the default one, reset it. + */ + if (unlikely(irq_default_domain == domain)) + irq_set_default_host(NULL); + + mutex_unlock(&irq_domain_mutex); + + pr_debug("Removed domain %s\n", domain->name); +} +EXPORT_SYMBOL_GPL(irq_domain_unpublish); /** * __irq_domain_add() - Allocate a new irq_domain data structure @@ -264,7 +325,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int s domain = __irq_domain_create(fwnode, size, hwirq_max, direct_max, ops, host_data); if (domain) - __irq_domain_publish(domain); + irq_domain_publish(domain); return domain; } @@ -280,28 +341,8 @@ EXPORT_SYMBOL_GPL(__irq_domain_add); */ void irq_domain_remove(struct irq_domain *domain) { - mutex_lock(&irq_domain_mutex); - debugfs_remove_domain_dir(domain); - - WARN_ON(!radix_tree_empty(&domain->revmap_tree)); - - list_del(&domain->link); - - /* - * If the going away domain is the default one, reset it. - */ - if (unlikely(irq_default_domain == domain)) - irq_set_default_host(NULL); - - mutex_unlock(&irq_domain_mutex); - - pr_debug("Removed domain %s\n", domain->name); - - fwnode_dev_initialized(domain->fwnode, false); - fwnode_handle_put(domain->fwnode); - if (domain->flags & IRQ_DOMAIN_NAME_ALLOCATED) - kfree(domain->name); - kfree(domain); + irq_domain_unpublish(domain); + irq_domain_free(domain); } EXPORT_SYMBOL_GPL(irq_domain_remove); @@ -1184,7 +1225,7 @@ struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, domain->parent = parent; domain->flags |= flags; - __irq_domain_publish(domain); + irq_domain_publish(domain); } return domain; From patchwork Mon May 27 16:14:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675608 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 90CEF16C6A0; Mon, 27 May 2024 16:15:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826522; cv=none; b=WoCl4DTOfgsf8dEamQTV1My5m13BclHNiVArWOSSypuh7mxG95a1A3Q+atkYAVOPsWmN5ZeFfKLG+SLmpDMKLrYpesMLpWy7LiHsCqQhHtVLneZS0Qu9fzmF/eXZFWlQlLPHDBzjQhqnSWHIzLcA6tmYmclZXGWQ4V7CqYLd9To= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826522; c=relaxed/simple; bh=x/m77iqhUFE/lj7qj1x4mjZYBl01jxuGtZ9/VfM95qo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Q4Nq+2Q5x32yE89EKb3CjoPH5hTGt60D+jbBYX6FLHDFEIEjWMmf1vm5k1fqNbmi6aw5p9hepjdycFhmRC8YGRCBGRQ+R9kkE6HrO/kk5m9U5RNrCBl40di4hPsCHoV1W1WYb6ogheY0a1CkfNprE0H61cxQQl1GLgin7meOGJk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=CRs0Bt2a; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="CRs0Bt2a" Received: by mail.gandi.net (Postfix) with ESMTPA id 6C5F8FF80C; Mon, 27 May 2024 16:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826518; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gEUkUf+BSyAO3M0CiXuz/ivWZ/onbuyxsn9Wx1tQueo=; b=CRs0Bt2aY+bUF72VIn1+7ihLLbL6Mu17GL06QgZcN+v7HYoOOhKR7L0m/HmJ54tZUv2IJn 50l/PUaq2subgrdUZr8cG5ExgZRdT1Y5427Inld3sEzNozK3FHLLhCDRiu9XcaOPwslj+6 3Wy3GQxbr4ZLj90oyb8Iy9lpoZr+Kxmf057cci+bzIMVGLE7Qd8JV8xVwz/kMw+JtGVUss qOzPJvQ6vWisB1cqhnRHOBPA5vSXF8Ht26/lxny1R7VIXNpnBw0nkRmu9NMRAVqXBTPOTB DDM9bGqFbJs0MXsebPrydEkW8OsMO3lKPcv2hT23Kpt/QCK7NIQvvmja1OupSQ== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 11/19] irqchip: Add support for LAN966x OIC Date: Mon, 27 May 2024 18:14:38 +0200 Message-ID: <20240527161450.326615-12-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com The Microchip LAN966x outband interrupt controller (OIC) maps the internal interrupt sources of the LAN966x device to an external interrupt. When the LAN966x device is used as a PCI device, the external interrupt is routed to the PCI interrupt. Signed-off-by: Herve Codina --- drivers/irqchip/Kconfig | 12 ++ drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-lan966x-oic.c | 308 ++++++++++++++++++++++++++++++ 3 files changed, 321 insertions(+) create mode 100644 drivers/irqchip/irq-lan966x-oic.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 14464716bacb..348f34525d23 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -169,6 +169,18 @@ config IXP4XX_IRQ select IRQ_DOMAIN select SPARSE_IRQ +config LAN966X_OIC + tristate "Microchip LAN966x OIC Support" + select GENERIC_IRQ_CHIP + select IRQ_DOMAIN + help + Enable support for the LAN966x Outbound Interrupt Controller. + This controller is present on the Microchip LAN966x PCI device and + maps the internal interrupts sources to PCIe interrupt. + + To compile this driver as a module, choose M here: the module + will be called irq-lan966x-oic. + config MADERA_IRQ tristate diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index d9dc3d99aaa8..9f6f88274bec 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -104,6 +104,7 @@ obj-$(CONFIG_IMX_IRQSTEER) += irq-imx-irqsteer.o obj-$(CONFIG_IMX_INTMUX) += irq-imx-intmux.o obj-$(CONFIG_IMX_MU_MSI) += irq-imx-mu-msi.o obj-$(CONFIG_MADERA_IRQ) += irq-madera.o +obj-$(CONFIG_LAN966X_OIC) += irq-lan966x-oic.o obj-$(CONFIG_LS1X_IRQ) += irq-ls1x.o obj-$(CONFIG_TI_SCI_INTR_IRQCHIP) += irq-ti-sci-intr.o obj-$(CONFIG_TI_SCI_INTA_IRQCHIP) += irq-ti-sci-inta.o diff --git a/drivers/irqchip/irq-lan966x-oic.c b/drivers/irqchip/irq-lan966x-oic.c new file mode 100644 index 000000000000..a5f64610e62d --- /dev/null +++ b/drivers/irqchip/irq-lan966x-oic.c @@ -0,0 +1,308 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the Microchip LAN966x outbound interrupt controller + * + * Copyright (c) 2024 Technology Inc. and its subsidiaries. + * + * Authors: + * Horatiu Vultur + * Clément Léger + * Herve Codina + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct lan966x_oic_chip_regs { + int reg_off_ena_set; + int reg_off_ena_clr; + int reg_off_sticky; + int reg_off_ident; + int reg_off_map; +}; + +struct lan966x_oic_data { + struct irq_domain *domain; + void __iomem *regs; + int irq; +}; + +#define LAN966X_OIC_NR_IRQ 86 + +/* Interrupt sticky status */ +#define LAN966X_OIC_INTR_STICKY 0x30 +#define LAN966X_OIC_INTR_STICKY1 0x34 +#define LAN966X_OIC_INTR_STICKY2 0x38 + +/* Interrupt enable */ +#define LAN966X_OIC_INTR_ENA 0x48 +#define LAN966X_OIC_INTR_ENA1 0x4c +#define LAN966X_OIC_INTR_ENA2 0x50 + +/* Atomic clear of interrupt enable */ +#define LAN966X_OIC_INTR_ENA_CLR 0x54 +#define LAN966X_OIC_INTR_ENA_CLR1 0x58 +#define LAN966X_OIC_INTR_ENA_CLR2 0x5c + +/* Atomic set of interrupt */ +#define LAN966X_OIC_INTR_ENA_SET 0x60 +#define LAN966X_OIC_INTR_ENA_SET1 0x64 +#define LAN966X_OIC_INTR_ENA_SET2 0x68 + +/* Mapping of source to destination interrupts (_n = 0..8) */ +#define LAN966X_OIC_DST_INTR_MAP(_n) (0x78 + (_n) * 4) +#define LAN966X_OIC_DST_INTR_MAP1(_n) (0x9c + (_n) * 4) +#define LAN966X_OIC_DST_INTR_MAP2(_n) (0xc0 + (_n) * 4) + +/* Currently active interrupt sources per destination (_n = 0..8) */ +#define LAN966X_OIC_DST_INTR_IDENT(_n) (0xe4 + (_n) * 4) +#define LAN966X_OIC_DST_INTR_IDENT1(_n) (0x108 + (_n) * 4) +#define LAN966X_OIC_DST_INTR_IDENT2(_n) (0x12c + (_n) * 4) + +static unsigned int lan966x_oic_irq_startup(struct irq_data *data) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data); + struct irq_chip_type *ct = irq_data_get_chip_type(data); + struct lan966x_oic_chip_regs *chip_regs = gc->private; + u32 map; + + irq_gc_lock(gc); + + /* Map the source interrupt to the destination */ + map = irq_reg_readl(gc, chip_regs->reg_off_map); + map |= data->mask; + irq_reg_writel(gc, map, chip_regs->reg_off_map); + + irq_gc_unlock(gc); + + ct->chip.irq_ack(data); + ct->chip.irq_unmask(data); + + return 0; +} + +static void lan966x_oic_irq_shutdown(struct irq_data *data) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data); + struct irq_chip_type *ct = irq_data_get_chip_type(data); + struct lan966x_oic_chip_regs *chip_regs = gc->private; + u32 map; + + ct->chip.irq_mask(data); + + irq_gc_lock(gc); + + /* Unmap the interrupt */ + map = irq_reg_readl(gc, chip_regs->reg_off_map); + map &= ~data->mask; + irq_reg_writel(gc, map, chip_regs->reg_off_map); + + irq_gc_unlock(gc); +} + +static int lan966x_oic_irq_set_type(struct irq_data *data, + unsigned int flow_type) +{ + if (flow_type != IRQ_TYPE_LEVEL_HIGH) { + pr_err("lan966x oic doesn't support flow type %d\n", flow_type); + return -EINVAL; + } + + return 0; +} + +static void lan966x_oic_irq_handler_domain(struct irq_domain *d, u32 first_irq) +{ + struct irq_chip_generic *gc = irq_get_domain_generic_chip(d, first_irq); + struct lan966x_oic_chip_regs *chip_regs = gc->private; + unsigned long ident; + unsigned int hwirq; + + ident = irq_reg_readl(gc, chip_regs->reg_off_ident); + if (!ident) + return; + + for_each_set_bit(hwirq, &ident, 32) + generic_handle_domain_irq(d, hwirq + first_irq); +} + +static void lan966x_oic_irq_handler(struct irq_desc *desc) +{ + struct irq_domain *d = irq_desc_get_handler_data(desc); + struct irq_chip *chip = irq_desc_get_chip(desc); + + chained_irq_enter(chip, desc); + lan966x_oic_irq_handler_domain(d, 0); + lan966x_oic_irq_handler_domain(d, 32); + lan966x_oic_irq_handler_domain(d, 64); + chained_irq_exit(chip, desc); +} + +static struct lan966x_oic_chip_regs lan966x_oic_chip_regs[3] = { + { + .reg_off_ena_set = LAN966X_OIC_INTR_ENA_SET, + .reg_off_ena_clr = LAN966X_OIC_INTR_ENA_CLR, + .reg_off_sticky = LAN966X_OIC_INTR_STICKY, + .reg_off_ident = LAN966X_OIC_DST_INTR_IDENT(0), + .reg_off_map = LAN966X_OIC_DST_INTR_MAP(0), + }, { + .reg_off_ena_set = LAN966X_OIC_INTR_ENA_SET1, + .reg_off_ena_clr = LAN966X_OIC_INTR_ENA_CLR1, + .reg_off_sticky = LAN966X_OIC_INTR_STICKY1, + .reg_off_ident = LAN966X_OIC_DST_INTR_IDENT1(0), + .reg_off_map = LAN966X_OIC_DST_INTR_MAP1(0), + }, { + .reg_off_ena_set = LAN966X_OIC_INTR_ENA_SET2, + .reg_off_ena_clr = LAN966X_OIC_INTR_ENA_CLR2, + .reg_off_sticky = LAN966X_OIC_INTR_STICKY2, + .reg_off_ident = LAN966X_OIC_DST_INTR_IDENT2(0), + .reg_off_map = LAN966X_OIC_DST_INTR_MAP2(0), + } +}; + +static void lan966x_oic_chip_init(struct lan966x_oic_data *lan966x_oic, + struct irq_chip_generic *gc, + struct lan966x_oic_chip_regs *chip_regs) +{ + gc->reg_base = lan966x_oic->regs; + gc->chip_types[0].regs.enable = chip_regs->reg_off_ena_set; + gc->chip_types[0].regs.disable = chip_regs->reg_off_ena_clr; + gc->chip_types[0].regs.ack = chip_regs->reg_off_sticky; + gc->chip_types[0].chip.irq_startup = lan966x_oic_irq_startup; + gc->chip_types[0].chip.irq_shutdown = lan966x_oic_irq_shutdown; + gc->chip_types[0].chip.irq_set_type = lan966x_oic_irq_set_type; + gc->chip_types[0].chip.irq_mask = irq_gc_mask_disable_reg; + gc->chip_types[0].chip.irq_unmask = irq_gc_unmask_enable_reg; + gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit; + gc->private = chip_regs; + + /* Disable all interrupts handled by this chip */ + irq_reg_writel(gc, ~0, chip_regs->reg_off_ena_clr); +} + +static void lan966x_oic_chip_exit(struct irq_chip_generic *gc) +{ + /* Disable and ack all interrupts handled by this chip */ + irq_reg_writel(gc, ~0, gc->chip_types[0].regs.disable); + irq_reg_writel(gc, ~0, gc->chip_types[0].regs.ack); +} + +static int lan966x_oic_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct lan966x_oic_data *lan966x_oic; + struct device *dev = &pdev->dev; + struct irq_chip_generic *gc; + int ret; + int i; + + lan966x_oic = devm_kmalloc(dev, sizeof(*lan966x_oic), GFP_KERNEL); + if (!lan966x_oic) + return -ENOMEM; + + lan966x_oic->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(lan966x_oic->regs)) + return dev_err_probe(dev, PTR_ERR(lan966x_oic->regs), + "failed to map resource\n"); + + lan966x_oic->domain = irq_domain_alloc_linear(of_node_to_fwnode(node), + LAN966X_OIC_NR_IRQ, + &irq_generic_chip_ops, + NULL); + if (!lan966x_oic->domain) { + dev_err(dev, "failed to create an IRQ domain\n"); + return -EINVAL; + } + + lan966x_oic->irq = platform_get_irq(pdev, 0); + if (lan966x_oic->irq < 0) { + ret = dev_err_probe(dev, lan966x_oic->irq, + "failed to get the IRQ\n"); + goto err_domain_free; + } + + ret = irq_alloc_domain_generic_chips(lan966x_oic->domain, 32, 1, + "lan966x-oic", handle_level_irq, 0, + 0, 0); + if (ret) { + dev_err_probe(dev, ret, "failed to alloc irq domain gc\n"); + goto err_domain_free; + } + + /* Init chips */ + BUILD_BUG_ON(DIV_ROUND_UP(LAN966X_OIC_NR_IRQ, 32) != + ARRAY_SIZE(lan966x_oic_chip_regs)); + for (i = 0; i < ARRAY_SIZE(lan966x_oic_chip_regs); i++) { + gc = irq_get_domain_generic_chip(lan966x_oic->domain, i * 32); + lan966x_oic_chip_init(lan966x_oic, gc, + &lan966x_oic_chip_regs[i]); + } + + irq_set_chained_handler_and_data(lan966x_oic->irq, + lan966x_oic_irq_handler, + lan966x_oic->domain); + + irq_domain_publish(lan966x_oic->domain); + platform_set_drvdata(pdev, lan966x_oic); + return 0; + +err_domain_free: + irq_domain_free(lan966x_oic->domain); + return ret; +} + +static void lan966x_oic_remove(struct platform_device *pdev) +{ + struct lan966x_oic_data *lan966x_oic = platform_get_drvdata(pdev); + struct irq_chip_generic *gc; + int i; + + for (i = 0; i < ARRAY_SIZE(lan966x_oic_chip_regs); i++) { + gc = irq_get_domain_generic_chip(lan966x_oic->domain, i * 32); + lan966x_oic_chip_exit(gc); + } + + irq_set_chained_handler_and_data(lan966x_oic->irq, NULL, NULL); + + for (i = 0; i < LAN966X_OIC_NR_IRQ; i++) + irq_dispose_mapping(irq_find_mapping(lan966x_oic->domain, i)); + + irq_domain_unpublish(lan966x_oic->domain); + + for (i = 0; i < ARRAY_SIZE(lan966x_oic_chip_regs); i++) { + gc = irq_get_domain_generic_chip(lan966x_oic->domain, i * 32); + irq_remove_generic_chip(gc, ~0, 0, 0); + } + + kfree(lan966x_oic->domain->gc); + irq_domain_free(lan966x_oic->domain); +} + +static const struct of_device_id lan966x_oic_of_match[] = { + { .compatible = "microchip,lan966x-oic" }, + {} /* sentinel */ +}; +MODULE_DEVICE_TABLE(of, lan966x_oic_of_match); + +static struct platform_driver lan966x_oic_driver = { + .probe = lan966x_oic_probe, + .remove_new = lan966x_oic_remove, + .driver = { + .name = "lan966x-oic", + .of_match_table = lan966x_oic_of_match, + }, +}; +module_platform_driver(lan966x_oic_driver); + +MODULE_AUTHOR("Herve Codina "); +MODULE_DESCRIPTION("Microchip LAN966x OIC driver"); +MODULE_LICENSE("GPL"); From patchwork Mon May 27 16:14:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675609 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 2B25216C853; Mon, 27 May 2024 16:15:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826523; cv=none; b=mCEGcxK0ZxubF+X7dhY5kCTEwxJogEi2GTrL17RI7Bb6eCknL4t1KKGBG3yj1nBIK3LJ9+pG9Da601ArE/OWBPPRvhQW4lY9MHACU4bgT9/Wokj5RlwW9h0So8P79PNNoc1y+/FkFcb7j5x7lHRuSuZa6REiA9yL/c0YkeJ9PtI= ARC-Message-Signature: i=1; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 12/19] MAINTAINERS: Add the Microchip LAN966x OIC driver entry Date: Mon, 27 May 2024 18:14:39 +0200 Message-ID: <20240527161450.326615-13-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com After contributing the driver, add myself as the maintainer for the Microchip LAN966x OIC driver. Signed-off-by: Herve Codina --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index d6c90161c7bf..baeb307344cd 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14727,6 +14727,12 @@ L: netdev@vger.kernel.org S: Maintained F: drivers/net/ethernet/microchip/lan966x/* +MICROCHIP LAN966X OIC DRIVER +M: Herve Codina +S: Maintained +F: Documentation/devicetree/bindings/interrupt-controller/microchip,lan966x-oic.yaml +F: drivers/irqchip/irq-lan966x-oic.c + MICROCHIP LCDFB DRIVER M: Nicolas Ferre L: linux-fbdev@vger.kernel.org From patchwork Mon May 27 16:14:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675610 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 85F2516C869; Mon, 27 May 2024 16:15:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826524; cv=none; b=F1DxhGdPVx/w3ki31T/tZ02jQEzVm5aL7yCvKzCPOvsL4LK5C68INt05uYC0ldCihqiC3GD1AKUnjNY56O/UfLP1ySfZmKAn5wk408Ad1tyjpXjaAwOURhaKgDRWruvmIB41qshPFI1wr9kprdBrEya7SnU9EuMjSRr5XzFS+y0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826524; c=relaxed/simple; bh=NfXTvwTcNt6TT2yA4BeBzCWYH0x+WXyl8rDrM6Pn0ZI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mfR0N6Nw4Zu7blqflTSf10XgRC9+jD9BLhXZMr77M2ugqiovmL27w6xvw4FXj0WWIaGNRyhIGLifPhJ3ghGrwni5dwzJKE0xHqX/TJ/e413l05CquT5e6gQ7IfLhv6sv03a87FxwrKVQuZHIev7lLmzEamOAD+EgaLSCz774y5E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=KLsUYtmL; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="KLsUYtmL" Received: by mail.gandi.net (Postfix) with ESMTPA id B21FBFF817; Mon, 27 May 2024 16:15:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826521; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3h+hZPubtWgPDD7KPmRBpR6yZ07j+EdVtQNqtGhhR2w=; b=KLsUYtmLqQAKRcBHuSjg5r26CPzkClTo8OEYGfcU0kBluW6n8ZXHUvCneD3BtKdU7GiE6w 19JB8grUr+P4p/NeZ2Jufvd/T9nuiIbFicmYJR6C1gCzf5+ibofv/IJLAOHeN6jho2H0de 5oXisZKUr1TIJqnR8kpC9NljzGSlp8IKXMiM4VbuKorXEFjm+tt/wTXvwG+8jZD+OE/Tu/ i81d66beg6ItjcpRSDnjG76BKTe8xwDy/gCulyQVLoz4QKOQZe4urKbJexgosAO26fwtfm pkzo0ficRtreEvNhHn3b11GEfkV7WRaCpAGxTjg8R/MhRKzDvn/s1WNwiRRJ/g== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 13/19] of: dynamic: Constify parameter in of_changeset_add_prop_string_array() Date: Mon, 27 May 2024 18:14:40 +0200 Message-ID: <20240527161450.326615-14-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com The str_array parameter has no reason to be an un-const array. Indeed, elements of the 'str_array' array are not changed by the code. Constify the 'str_array' array parameter. With this const qualifier added, the following construction is allowed: static const char * const tab_str[] = { "string1", "string2" }; of_changeset_add_prop_string_array(..., tab_str, ARRAY_SIZE(tab_str)); Signed-off-by: Herve Codina --- drivers/of/dynamic.c | 2 +- include/linux/of.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c index dda6092e6d3a..70011a98c500 100644 --- a/drivers/of/dynamic.c +++ b/drivers/of/dynamic.c @@ -984,7 +984,7 @@ EXPORT_SYMBOL_GPL(of_changeset_add_prop_string); int of_changeset_add_prop_string_array(struct of_changeset *ocs, struct device_node *np, const char *prop_name, - const char **str_array, size_t sz) + const char * const *str_array, size_t sz) { struct property prop; int i, ret; diff --git a/include/linux/of.h b/include/linux/of.h index a0bedd038a05..ee9a385a13db 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -1639,7 +1639,7 @@ int of_changeset_add_prop_string(struct of_changeset *ocs, int of_changeset_add_prop_string_array(struct of_changeset *ocs, struct device_node *np, const char *prop_name, - const char **str_array, size_t sz); + const char * const *str_array, size_t sz); int of_changeset_add_prop_u32_array(struct of_changeset *ocs, struct device_node *np, const char *prop_name, From patchwork Mon May 27 16:14:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675611 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 518EA16D333; Mon, 27 May 2024 16:15:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826526; cv=none; b=SG83cYDsBvEWduOPGR8V4NkbLUXZlV+Vqrmhk2Gj9ZL/TIFsc0aCTb8O047m0Na6z0lSqTWEwz61vVr+qtXJSevauR2bAU2V03FaC3oQa8fOF13DalVsQA9yIvrttiSaLDpIeaJTEJhieguT+q9Ia9+6AwTJvmLojpt+PrafXDw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826526; c=relaxed/simple; bh=47UWH4KURJgUJfA5++HvyM/XP+Ig032FdKBU4JWD2mU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Zf30hbe5d/bdlosa1JLgG19wzdrV/4KlgcMUBsfBhyntHdYog6JksybEVQKAoZloivMNimuxIjaiP3iSQN463oSVva/IbkzR2tJ+SYKD5w+UNVXWIMMCSBCYHfXYZ7nLDqM1wH7/68zRvI+Lcre4yg5xMf4Sh7nOYcNEhfd+aa4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=F4h6G8/A; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="F4h6G8/A" Received: by mail.gandi.net (Postfix) with ESMTPA id 3EA1DFF80F; Mon, 27 May 2024 16:15:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826522; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mF8W0q33/WLkH7WVZ32ffP/0R0KTagxfDzA1SpJMHeE=; b=F4h6G8/AlLbVnFnZ5vKQPhDJdVvmTWCmZGLDBNDnIIq3lB3QnQZFz/my78gSgZ9BHAFa43 Ml1Il0+9vCqn1iLh7jgMukY7Q+Cp6xI1wZV0vllvxhPcTaNTBzO0wiTZWLUZnMAftkWPd4 sacXvNPipctbZCxUQgcCMijue3RtJQ/8b7ta04+kylDMtPNpgSFeqghxRNHTgay6wjEKYd vApo00aynnlhxHy2rzNzLXW9qaQxzhm59P0u+3p6fyNqhvLfOXSOF1cxt0ju058mHRISce pMl/w15TJv15xlBVbDgKhVM1j4br6z4AwNU/OmGyJEUBiA66LPgwGJ8hJNtpbw== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 14/19] of: unittest: Add tests for changeset properties adding Date: Mon, 27 May 2024 18:14:41 +0200 Message-ID: <20240527161450.326615-15-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com No test cases are present to test the of_changes_add_prop_*() function family. Add a new test to fill this lack. Functions tested are: - of_changes_add_prop_string() - of_changes_add_prop_string_array() - of_changeset_add_prop_u32() - of_changeset_add_prop_u32_array() Signed-off-by: Herve Codina --- drivers/of/unittest.c | 155 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 155 insertions(+) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 445ad13dab98..f8edc96db680 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -917,6 +917,160 @@ static void __init of_unittest_changeset(void) #endif } +static void __init __maybe_unused changeset_check_string(struct device_node *np, + const char *prop_name, + const char *expected_str) +{ + const char *str; + int ret; + + ret = of_property_read_string(np, prop_name, &str); + if (unittest(ret == 0, "failed to read %s\n", prop_name)) + return; + + unittest(strcmp(str, expected_str) == 0, + "%s value mismatch (read '%s', exp '%s')\n", + prop_name, str, expected_str); +} + +static void __init __maybe_unused changeset_check_string_array(struct device_node *np, + const char *prop_name, + const char * const *expected_array, + unsigned int count) +{ + const char *str; + unsigned int i; + int ret; + int cnt; + + cnt = of_property_count_strings(np, prop_name); + if (unittest(cnt >= 0, "failed to get %s count\n", prop_name)) + return; + + if (unittest(cnt == count, + "%s count mismatch (read %d, exp %u)\n", + prop_name, cnt, count)) + return; + + for (i = 0; i < count; i++) { + ret = of_property_read_string_index(np, prop_name, i, &str); + if (unittest(ret == 0, "failed to read %s[%d]\n", prop_name, i)) + continue; + + unittest(strcmp(str, expected_array[i]) == 0, + "%s[%d] value mismatch (read '%s', exp '%s')\n", + prop_name, i, str, expected_array[i]); + } +} + +static void __init __maybe_unused changeset_check_u32(struct device_node *np, + const char *prop_name, + u32 expected_u32) +{ + u32 val32; + int ret; + + ret = of_property_read_u32(np, prop_name, &val32); + if (unittest(ret == 0, "failed to read %s\n", prop_name)) + return; + + unittest(val32 == expected_u32, + "%s value mismatch (read '%u', exp '%u')\n", + prop_name, val32, expected_u32); +} + +static void __init __maybe_unused changeset_check_u32_array(struct device_node *np, + const char *prop_name, + const u32 *expected_array, + unsigned int count) +{ + unsigned int i; + u32 val32; + int ret; + int cnt; + + cnt = of_property_count_u32_elems(np, prop_name); + if (unittest(cnt >= 0, "failed to get %s count\n", prop_name)) + return; + + if (unittest(cnt == count, + "%s count mismatch (read %d, exp %u)\n", + prop_name, cnt, count)) + return; + + for (i = 0; i < count; i++) { + ret = of_property_read_u32_index(np, prop_name, i, &val32); + if (unittest(ret == 0, "failed to read %s[%d]\n", prop_name, i)) + continue; + + unittest(val32 == expected_array[i], + "%s[%d] value mismatch (read '%u', exp '%u')\n", + prop_name, i, val32, expected_array[i]); + } +} + +static void __init of_unittest_changeset_prop(void) +{ +#ifdef CONFIG_OF_DYNAMIC + static const char * const str_array[] = { "abc", "defg", "hij" }; + static const u32 u32_array[] = { 123, 4567, 89, 10, 11 }; + struct device_node *nchangeset, *np; + struct of_changeset chgset; + int ret; + + nchangeset = of_find_node_by_path("/testcase-data/changeset"); + if (!nchangeset) { + pr_err("missing testcase data\n"); + return; + } + + of_changeset_init(&chgset); + + np = of_changeset_create_node(&chgset, nchangeset, "test-prop"); + if (unittest(np, "failed to create test-prop node\n")) + goto end_changeset_destroy; + + ret = of_changeset_add_prop_string(&chgset, np, "prop-string", "abcde"); + unittest(ret == 0, "failed to add prop-string\n"); + + ret = of_changeset_add_prop_string_array(&chgset, np, "prop-string-array", + str_array, ARRAY_SIZE(str_array)); + unittest(ret == 0, "failed to add prop-string-array\n"); + + ret = of_changeset_add_prop_u32(&chgset, np, "prop-u32", 1234); + unittest(ret == 0, "failed to add prop-u32\n"); + + ret = of_changeset_add_prop_u32_array(&chgset, np, "prop-u32-array", + u32_array, ARRAY_SIZE(u32_array)); + unittest(ret == 0, "failed to add prop-u32-array\n"); + + of_node_put(np); + + ret = of_changeset_apply(&chgset); + if (unittest(ret == 0, "failed to apply changeset\n")) + goto end_changeset_destroy; + + np = of_find_node_by_path("/testcase-data/changeset/test-prop"); + if (unittest(np, "failed to find test-prop node\n")) + goto end_revert_changeset; + + changeset_check_string(np, "prop-string", "abcde"); + changeset_check_string_array(np, "prop-string-array", str_array, ARRAY_SIZE(str_array)); + changeset_check_u32(np, "prop-u32", 1234); + changeset_check_u32_array(np, "prop-u32-array", u32_array, ARRAY_SIZE(u32_array)); + + of_node_put(np); + +end_revert_changeset: + ret = of_changeset_revert(&chgset); + unittest(ret == 0, "failed to revert changeset\n"); + +end_changeset_destroy: + of_changeset_destroy(&chgset); + of_node_put(nchangeset); +#endif +} + static void __init of_unittest_dma_get_max_cpu_address(void) { struct device_node *np; @@ -4101,6 +4255,7 @@ static int __init of_unittest(void) of_unittest_property_string(); of_unittest_property_copy(); of_unittest_changeset(); + of_unittest_changeset_prop(); of_unittest_parse_interrupts(); of_unittest_parse_interrupts_extended(); of_unittest_dma_get_max_cpu_address(); From patchwork Mon May 27 16:14:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675612 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 BB8A716D4C5; Mon, 27 May 2024 16:15:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826529; cv=none; b=atSrGUKk+5Az8TA234JhUvyZjDzxzcWeahU7Eg2xDOTKaK0nnwioHilqdm5zAY3Klpy8Wn8mBPqR3bCwb4KMYYZv3XzuiGf+wiQEZ5MP8Qcc/EWdcJ94gn9xGLZ0gZj+bXXijHiQxdHf8mup+fatASxDKinoxbsYoRRUZCLnhuA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826529; c=relaxed/simple; bh=TFHpjk5EIjM4ZgDHiMQQnW5vfs5uqYWd3y1N5tamdQw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 15/19] of: dynamic: Introduce of_changeset_add_prop_bool() Date: Mon, 27 May 2024 18:14:42 +0200 Message-ID: <20240527161450.326615-16-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com APIs to add some properties in a changeset exist but nothing to add a DT boolean property (i.e. a property without any values). Fill this lack with of_changeset_add_prop_bool(). Signed-off-by: Herve Codina --- drivers/of/dynamic.c | 25 +++++++++++++++++++++++++ include/linux/of.h | 3 +++ 2 files changed, 28 insertions(+) diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c index 70011a98c500..110104a936d9 100644 --- a/drivers/of/dynamic.c +++ b/drivers/of/dynamic.c @@ -1047,3 +1047,28 @@ int of_changeset_add_prop_u32_array(struct of_changeset *ocs, return of_changeset_add_prop_helper(ocs, np, &prop); } EXPORT_SYMBOL_GPL(of_changeset_add_prop_u32_array); + +/** + * of_changeset_add_prop_bool - Add a boolean property (i.e. a property without + * any values) to a changeset. + * + * @ocs: changeset pointer + * @np: device node pointer + * @prop_name: name of the property to be added + * + * Create a boolean property and add it to a changeset. + * + * Return: 0 on success, a negative error value in case of an error. + */ +int of_changeset_add_prop_bool(struct of_changeset *ocs, struct device_node *np, + const char *prop_name) +{ + struct property prop; + + prop.name = (char *)prop_name; + prop.length = 0; + prop.value = NULL; + + return of_changeset_add_prop_helper(ocs, np, &prop); +} +EXPORT_SYMBOL_GPL(of_changeset_add_prop_bool); diff --git a/include/linux/of.h b/include/linux/of.h index ee9a385a13db..13cf7a43b473 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -1652,6 +1652,9 @@ static inline int of_changeset_add_prop_u32(struct of_changeset *ocs, return of_changeset_add_prop_u32_array(ocs, np, prop_name, &val, 1); } +int of_changeset_add_prop_bool(struct of_changeset *ocs, struct device_node *np, + const char *prop_name); + #else /* CONFIG_OF_DYNAMIC */ static inline int of_reconfig_notifier_register(struct notifier_block *nb) { From patchwork Mon May 27 16:14:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675613 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 4CC67163A97; Mon, 27 May 2024 16:15:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826531; cv=none; b=a8s6+p3twzlAVsuNN9uNFSW+4tSQikYj7QJBARG2HNZeMX8A0DVNez5RtkYBCXf+/KcszVSe7I/MHciO2TyVpiDzk5J4vH9TSPX5H6Z7MFJdfJ0GIDTaD8ew2Fteekpdrcg83ULzuoN8gQfpY3/lb4Iu0dquir4Lu4IFmemEaxs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826531; c=relaxed/simple; bh=VofzQAz9jwO+Od3EmvQ5kjLYk/NvWLcXsH0JjB5B9VQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oyW60Fnv1ic2TPdgyiD5GdjxcqDEVTAqbh7pdxk7N2f+n2Fq8v6aseSNsYWv95yo8nhQg2+8x5GJKSUFhi7H0UrJNtIAu6jMtdmNEWT3qtlqTVLs4fH1CFxS71CMIlHDZEoM2QsSzdKErVksf4MghxAvyFeusqt/DwX3W7oIIVc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=nOLzTlWK; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="nOLzTlWK" Received: by mail.gandi.net (Postfix) with ESMTPA id 4A101FF80D; Mon, 27 May 2024 16:15:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826526; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IilDcbzGzG8MJynaB4el9RJ6tLmSv9BYDf8kPEDjUDQ=; b=nOLzTlWKLJ/MbZOfyb4/CjZgC9/G4TPjacYc6yUqFYSaCPd5I6/F++I/cjMCQvyR6+WyBK 9d6kCAUBs5F+K9whSGwO3p4lu35onnc4n/NnW43mQjsR34Z7km1lD5X7PXUXRRXTEy1pUy Bh+qWl8+ZbzxiBKlxdsmfq9jQkCovYfw9F8lbG40LFQ0Z2JGSVz7vN9pcQF2pAWTLiP8wf zvJBt3XGGStzm4On1AmLakQBiG4SEYFsTd7mHtRVXaMVXIzB6eluC78WRXxSTc42jJ/GKm W1D+893BV++4CIea94xy/ZtUfIwXr5LVFmY/OtShMWKYC0SY5T7p1/i0MJcGuA== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 16/19] of: unittest: Add a test case for of_changeset_add_prop_bool() Date: Mon, 27 May 2024 18:14:43 +0200 Message-ID: <20240527161450.326615-17-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com Improve of_unittest_changeset_prop() to have a test case for the newly introduced of_changeset_add_prop_bool(). Signed-off-by: Herve Codina --- drivers/of/unittest.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index f8edc96db680..c830f346df45 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -1009,6 +1009,13 @@ static void __init __maybe_unused changeset_check_u32_array(struct device_node * } } +static void __init __maybe_unused changeset_check_bool(struct device_node *np, + const char *prop_name) +{ + unittest(of_property_read_bool(np, prop_name), + "%s value mismatch (read 'false', exp 'true')\n", prop_name); +} + static void __init of_unittest_changeset_prop(void) { #ifdef CONFIG_OF_DYNAMIC @@ -1044,6 +1051,9 @@ static void __init of_unittest_changeset_prop(void) u32_array, ARRAY_SIZE(u32_array)); unittest(ret == 0, "failed to add prop-u32-array\n"); + ret = of_changeset_add_prop_bool(&chgset, np, "prop-bool"); + unittest(ret == 0, "failed to add prop-bool\n"); + of_node_put(np); ret = of_changeset_apply(&chgset); @@ -1058,6 +1068,7 @@ static void __init of_unittest_changeset_prop(void) changeset_check_string_array(np, "prop-string-array", str_array, ARRAY_SIZE(str_array)); changeset_check_u32(np, "prop-u32", 1234); changeset_check_u32_array(np, "prop-u32-array", u32_array, ARRAY_SIZE(u32_array)); + changeset_check_bool(np, "prop-bool"); of_node_put(np); From patchwork Mon May 27 16:14:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675614 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 F2D3A16DEB9; Mon, 27 May 2024 16:15:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826532; cv=none; b=L0QP4JKrXXKwwJq+IQakLjfJKL73oBB5KKfLDImmjgSRq5zYVLcl0QDdiENwdvlvzEWllZ4/P+02n5v+f5pvCAH9IvbbkxGXgkTlupO6CaErTvD/vAX/64/V3q+UmvDBwnSRhRdpRjuOwug1gZiN3M37abKoosHyJqF5wG9j5SA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826532; c=relaxed/simple; bh=KWOkIyivWuA9wtmoHY37AqxHkQB6/jl+LFLPFAwKWV0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KpnWV3flipiMK6PkF3Y8/v9a/wBxkBTE887m7Flv5sHFG304Mh2ez/K6dwWt4vNJHdP3zXIi/jm4PewofvvUh+NQiNyv9YCHkge6j3HfUsHBNM0lu4dIxIkVNaQdWsV+iLjAftx93XYng1ps0tTllt47o2YsEsh+UXgQzUtKLgk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=TJPz/QjW; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="TJPz/QjW" Received: by mail.gandi.net (Postfix) with ESMTPA id DE74FFF806; Mon, 27 May 2024 16:15:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826528; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=b1yRwle+HAvHy0Q0ReS5EoL1LVn7psuAz06A8wMDIfo=; b=TJPz/QjWh5ObhtAJXMw2B5yn/g+zKAMRCug48RsKHLX6szEZmkNH40hLcmTmQM5LpKx+iO NhAUv/qW7RQz5ttxUjjFdPudhvC3e0n9QPNRlzJaa2ICSipozqa5c+lQHYBNnPtYQqp6dW TwZWQi+BgEeYdYZf/+WOoV/wUki2vvF9UyyaE1UbDIgKUzRwi+uDB8dOnnolZKw5usgZ3r tizf41FgBHIUCnetK/4liNaxe3KoAyDGJ2N/HKWKDojw86XyyX1aFrRg/wzMHU2sydH1GH 0wACs6RTe5zk8nux47hz6lvkLkfn0aYxgExj+o46a/n9kWMKmqDLjko5hPs9bg== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 17/19] PCI: of_property: Add interrupt-controller property in PCI device nodes Date: Mon, 27 May 2024 18:14:44 +0200 Message-ID: <20240527161450.326615-18-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com PCI devices and bridges DT nodes created during the PCI scan are created with the interrupt-map property set to handle interrupts. In order to set this interrupt-map property at a specific level, a phandle to the parent interrupt controller is needed. On systems that are not fully described by a device-tree, the parent interrupt controller may be unavailable (i.e. not described by the device-tree). As mentioned in the [1], avoiding the use of the interrupt-map property and considering a PCI device as an interrupt controller itself avoid the use of a parent interrupt phandle. In that case, the PCI device itself as an interrupt controller is responsible for routing the interrupts described in the device-tree world (DT overlay) to the PCI interrupts. Add the 'interrupt-controller' property in the PCI device DT node. [1]: https://lore.kernel.org/lkml/CAL_Jsq+je7+9ATR=B6jXHjEJHjn24vQFs4Tvi9=vhDeK9n42Aw@mail.gmail.com/ Signed-off-by: Herve Codina Acked-by: Bjorn Helgaas --- drivers/pci/of_property.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/pci/of_property.c b/drivers/pci/of_property.c index 03539e505372..5a0b98e69795 100644 --- a/drivers/pci/of_property.c +++ b/drivers/pci/of_property.c @@ -183,6 +183,26 @@ static int of_pci_prop_interrupts(struct pci_dev *pdev, return of_changeset_add_prop_u32(ocs, np, "interrupts", (u32)pin); } +static int of_pci_prop_intr_ctrl(struct pci_dev *pdev, struct of_changeset *ocs, + struct device_node *np) +{ + int ret; + u8 pin; + + ret = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin); + if (ret != 0) + return ret; + + if (!pin) + return 0; + + ret = of_changeset_add_prop_u32(ocs, np, "#interrupt-cells", 1); + if (ret) + return ret; + + return of_changeset_add_prop_bool(ocs, np, "interrupt-controller"); +} + static int of_pci_prop_intr_map(struct pci_dev *pdev, struct of_changeset *ocs, struct device_node *np) { @@ -336,6 +356,10 @@ int of_pci_add_properties(struct pci_dev *pdev, struct of_changeset *ocs, ret = of_pci_prop_intr_map(pdev, ocs, np); if (ret) return ret; + } else { + ret = of_pci_prop_intr_ctrl(pdev, ocs, np); + if (ret) + return ret; } ret = of_pci_prop_ranges(pdev, ocs, np); From patchwork Mon May 27 16:14:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675615 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 B8BA116E893; Mon, 27 May 2024 16:15:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826535; cv=none; b=eK1WJGkewx95r7IiJej3uCfIb0a70xX9fTpZfpWYhsZoWt1f/6dobPCuVg2c+HVQ6OuHO7wKXyuoTcjZCwVdG1Ggw8wev2hNQ+7RalQ5jXE4Kd3JdH18gQL3qmehN9ghQk2dLhFlmCIfOR/51HoHJVTpTHJgajU5ycJ30o6BCK4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826535; c=relaxed/simple; bh=8LbOVPDes+S/JwJt6q32rZAoQPobCVX+rovAVuIFdRU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=oD24HuCdmzUbZQRANHMK1nzcdWb58lRcNF4KfiXCOkf4O/W+AWjTAYoFjVebrjO30rMnEPsCWe3KBUNKY/I1B8iTNE5kWS4cN3eQRhh3bYoO2nWSHqa+1o+cxpdiL/WbtiMXBhFQwYqVQbwIX6puCHogKs0GPFNlflAxD3x812M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=FVd9+tfQ; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="FVd9+tfQ" Received: by mail.gandi.net (Postfix) with ESMTPA id 87468FF811; Mon, 27 May 2024 16:15:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826531; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yjNRz52stJ36/fH3SVMIz99NWadg59zYIFnqd5Fj4vI=; b=FVd9+tfQCt5RQz7cTho3a1Qtlf8iQNcx6ZTpm3nYzdLTTkfx7BXvTN4UTyyW9pBxUS6mIJ aBdp0pu83BDNa8CX1Zz9p/Mqr8i1ZwyDfRRILqXe7ENqCVIKAa9Yr9oYxUTH1kzzkfMwu1 K4YjDelnXbwVar6sqgWVsBSoC8HUwSmugJm+dxObtLUXPWkwSbYLIzfkFGZ1Apyr1LWxVM B4b0oOUgSOjVaz1r7s2kivdToCuvkRvoxe6TsfnHgfvu4JwpOSouIo0/AWWaT3Al5aRTsk AAQ8SVLmx5qhmDRVAnkRQJsBZjOihFTfyyoZjqm1+MqPIZs6QcFu1NmC1ZdCJA== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 18/19] mfd: Add support for LAN966x PCI device Date: Mon, 27 May 2024 18:14:45 +0200 Message-ID: <20240527161450.326615-19-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com Add a PCI driver that handles the LAN966x PCI device using a device-tree overlay. This overlay is applied to the PCI device DT node and allows to describe components that are present in the device. The memory from the device-tree is remapped to the BAR memory thanks to "ranges" properties computed at runtime by the PCI core during the PCI enumeration. The PCI device itself acts as an interrupt controller and is used as the parent of the internal LAN966x interrupt controller to route the interrupts to the assigned PCI INTx interrupt. Signed-off-by: Herve Codina --- drivers/mfd/Kconfig | 24 ++++ drivers/mfd/Makefile | 4 + drivers/mfd/lan966x_pci.c | 229 +++++++++++++++++++++++++++++++++++ drivers/mfd/lan966x_pci.dtso | 167 +++++++++++++++++++++++++ drivers/pci/quirks.c | 1 + 5 files changed, 425 insertions(+) create mode 100644 drivers/mfd/lan966x_pci.c create mode 100644 drivers/mfd/lan966x_pci.dtso diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 266b4f54af60..15db144bc09b 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -144,6 +144,30 @@ config MFD_ATMEL_FLEXCOM by the probe function of this MFD driver according to a device tree property. +config MFD_LAN966X_PCI + tristate "Microchip LAN966x PCIe Support" + depends on PCI + select OF + select OF_OVERLAY + select IRQ_DOMAIN + help + This enables the support for the LAN966x PCIe device. + This is used to drive the LAN966x PCIe device from the host system + to which it is connected. + + This driver uses an overlay to load other drivers to support for + LAN966x internal components. + Even if this driver does not depend on these other drivers, in order + to have a fully functional board, the following drivers are needed: + - fixed-clock (COMMON_CLK) + - lan966x-oic (LAN966X_OIC) + - lan966x-cpu-syscon (MFD_SYSCON) + - lan966x-switch-reset (RESET_MCHP_SPARX5) + - lan966x-pinctrl (PINCTRL_OCELOT) + - lan966x-serdes (PHY_LAN966X_SERDES) + - lan966x-miim (MDIO_MSCC_MIIM) + - lan966x-switch (LAN966X_SWITCH) + config MFD_ATMEL_HLCDC tristate "Atmel HLCDC (High-end LCD Controller)" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index c66f07edcd0e..165a9674ff48 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -284,3 +284,7 @@ rsmu-i2c-objs := rsmu_core.o rsmu_i2c.o rsmu-spi-objs := rsmu_core.o rsmu_spi.o obj-$(CONFIG_MFD_RSMU_I2C) += rsmu-i2c.o obj-$(CONFIG_MFD_RSMU_SPI) += rsmu-spi.o + +lan966x-pci-objs := lan966x_pci.o +lan966x-pci-objs += lan966x_pci.dtbo.o +obj-$(CONFIG_MFD_LAN966X_PCI) += lan966x-pci.o diff --git a/drivers/mfd/lan966x_pci.c b/drivers/mfd/lan966x_pci.c new file mode 100644 index 000000000000..a0a59860928f --- /dev/null +++ b/drivers/mfd/lan966x_pci.c @@ -0,0 +1,229 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Microchip LAN966x PCI driver + * + * Copyright (c) 2024 Microchip Technology Inc. and its subsidiaries. + * + * Authors: + * Clément Léger + * Hervé Codina + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Embedded dtbo symbols created by cmd_wrap_S_dtb in scripts/Makefile.lib */ +extern char __dtbo_lan966x_pci_begin[]; +extern char __dtbo_lan966x_pci_end[]; + +struct pci_dev_intr_ctrl { + struct pci_dev *pci_dev; + struct irq_domain *irq_domain; + int irq; +}; + +static int pci_dev_irq_domain_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw) +{ + irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq); + return 0; +} + +static const struct irq_domain_ops pci_dev_irq_domain_ops = { + .map = pci_dev_irq_domain_map, + .xlate = irq_domain_xlate_onecell, +}; + +static irqreturn_t pci_dev_irq_handler(int irq, void *data) +{ + struct pci_dev_intr_ctrl *intr_ctrl = data; + int ret; + + ret = generic_handle_domain_irq(intr_ctrl->irq_domain, 0); + return ret ? IRQ_NONE : IRQ_HANDLED; +} + +static struct pci_dev_intr_ctrl *pci_dev_create_intr_ctrl(struct pci_dev *pdev) +{ + struct pci_dev_intr_ctrl *intr_ctrl; + struct fwnode_handle *fwnode; + int ret; + + if (!pdev->irq) + return ERR_PTR(-EOPNOTSUPP); + + fwnode = dev_fwnode(&pdev->dev); + if (!fwnode) + return ERR_PTR(-ENODEV); + + intr_ctrl = kmalloc(sizeof(*intr_ctrl), GFP_KERNEL); + if (!intr_ctrl) + return ERR_PTR(-ENOMEM); + + intr_ctrl->pci_dev = pdev; + + intr_ctrl->irq_domain = irq_domain_create_linear(fwnode, 1, &pci_dev_irq_domain_ops, + intr_ctrl); + if (!intr_ctrl->irq_domain) { + pci_err(pdev, "Failed to create irqdomain\n"); + ret = -ENOMEM; + goto err_free_intr_ctrl; + } + + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_INTX); + if (ret < 0) { + pci_err(pdev, "Unable alloc irq vector (%d)\n", ret); + goto err_remove_domain; + } + intr_ctrl->irq = pci_irq_vector(pdev, 0); + ret = request_irq(intr_ctrl->irq, pci_dev_irq_handler, IRQF_SHARED, + dev_name(&pdev->dev), intr_ctrl); + if (ret) { + pci_err(pdev, "Unable to request irq %d (%d)\n", intr_ctrl->irq, ret); + goto err_free_irq_vector; + } + + return intr_ctrl; + +err_free_irq_vector: + pci_free_irq_vectors(pdev); +err_remove_domain: + irq_domain_remove(intr_ctrl->irq_domain); +err_free_intr_ctrl: + kfree(intr_ctrl); + return ERR_PTR(ret); +} + +static void pci_dev_remove_intr_ctrl(struct pci_dev_intr_ctrl *intr_ctrl) +{ + free_irq(intr_ctrl->irq, intr_ctrl); + pci_free_irq_vectors(intr_ctrl->pci_dev); + irq_dispose_mapping(irq_find_mapping(intr_ctrl->irq_domain, 0)); + irq_domain_remove(intr_ctrl->irq_domain); + kfree(intr_ctrl); +} + +static void devm_pci_dev_remove_intr_ctrl(void *data) +{ + struct pci_dev_intr_ctrl *intr_ctrl = data; + + pci_dev_remove_intr_ctrl(intr_ctrl); +} + +static int devm_pci_dev_create_intr_ctrl(struct pci_dev *pdev) +{ + struct pci_dev_intr_ctrl *intr_ctrl; + + intr_ctrl = pci_dev_create_intr_ctrl(pdev); + + if (IS_ERR(intr_ctrl)) + return PTR_ERR(intr_ctrl); + + return devm_add_action_or_reset(&pdev->dev, devm_pci_dev_remove_intr_ctrl, intr_ctrl); +} + +struct lan966x_pci { + struct device *dev; + struct pci_dev *pci_dev; + int ovcs_id; +}; + +static int lan966x_pci_load_overlay(struct lan966x_pci *data) +{ + u32 dtbo_size = __dtbo_lan966x_pci_end - __dtbo_lan966x_pci_begin; + void *dtbo_start = __dtbo_lan966x_pci_begin; + int ret; + + ret = of_overlay_fdt_apply(dtbo_start, dtbo_size, &data->ovcs_id, data->dev->of_node); + if (ret) + return ret; + + return 0; +} + +static void lan966x_pci_unload_overlay(struct lan966x_pci *data) +{ + of_overlay_remove(&data->ovcs_id); +} + +static int lan966x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct device *dev = &pdev->dev; + struct lan966x_pci *data; + int ret; + + if (!dev->of_node) { + dev_err(dev, "Missing of_node for device\n"); + return -EINVAL; + } + + /* Need to be done before devm_pci_dev_create_intr_ctrl. + * It allocates an IRQ and so pdev->irq is updated + */ + ret = pcim_enable_device(pdev); + if (ret) + return ret; + + ret = devm_pci_dev_create_intr_ctrl(pdev); + if (ret) + return ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + dev_set_drvdata(dev, data); + data->dev = dev; + data->pci_dev = pdev; + + ret = lan966x_pci_load_overlay(data); + if (ret) + return ret; + + pci_set_master(pdev); + + ret = of_platform_default_populate(dev->of_node, NULL, dev); + if (ret) + goto err_unload_overlay; + + return 0; + +err_unload_overlay: + lan966x_pci_unload_overlay(data); + return ret; +} + +static void lan966x_pci_remove(struct pci_dev *pdev) +{ + struct device *dev = &pdev->dev; + struct lan966x_pci *data = dev_get_drvdata(dev); + + of_platform_depopulate(dev); + + lan966x_pci_unload_overlay(data); + + pci_clear_master(pdev); +} + +static struct pci_device_id lan966x_pci_ids[] = { + { PCI_DEVICE(0x1055, 0x9660) }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, lan966x_pci_ids); + +static struct pci_driver lan966x_pci_driver = { + .name = "mchp_lan966x_pci", + .id_table = lan966x_pci_ids, + .probe = lan966x_pci_probe, + .remove = lan966x_pci_remove, +}; +module_pci_driver(lan966x_pci_driver); + +MODULE_AUTHOR("Herve Codina "); +MODULE_DESCRIPTION("Microchip LAN966x PCI driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/lan966x_pci.dtso b/drivers/mfd/lan966x_pci.dtso new file mode 100644 index 000000000000..041f4319e4cd --- /dev/null +++ b/drivers/mfd/lan966x_pci.dtso @@ -0,0 +1,167 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2022 Microchip UNG + */ + +#include +#include +#include +#include +#include + +/dts-v1/; +/plugin/; + +/ { + fragment@0 { + target-path=""; + __overlay__ { + #address-cells = <3>; + #size-cells = <2>; + + pci-ep-bus@0 { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + + /* + * map @0xe2000000 (32MB) to BAR0 (CPU) + * map @0xe0000000 (16MB) to BAR1 (AMBA) + */ + ranges = <0xe2000000 0x00 0x00 0x00 0x2000000 + 0xe0000000 0x01 0x00 0x00 0x1000000>; + + oic: oic@e00c0120 { + compatible = "microchip,lan966x-oic"; + #interrupt-cells = <2>; + interrupt-controller; + interrupts = <0>; /* PCI INTx assigned interrupt */ + reg = <0xe00c0120 0x190>; + }; + + cpu_clk: cpu_clk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <600000000>; // CPU clock = 600MHz + }; + + ddr_clk: ddr_clk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <30000000>; // Fabric clock = 30MHz + }; + + sys_clk: sys_clk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <15625000>; // System clock = 15.625MHz + }; + + cpu_ctrl: syscon@e00c0000 { + compatible = "microchip,lan966x-cpu-syscon", "syscon"; + reg = <0xe00c0000 0xa8>; + }; + + reset: reset@e200400c { + compatible = "microchip,lan966x-switch-reset"; + reg = <0xe200400c 0x4>; + reg-names = "gcb"; + #reset-cells = <1>; + cpu-syscon = <&cpu_ctrl>; + }; + + gpio: pinctrl@e2004064 { + compatible = "microchip,lan966x-pinctrl"; + reg = <0xe2004064 0xb4>, + <0xe2010024 0x138>; + resets = <&reset 0>; + reset-names = "switch"; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&gpio 0 0 78>; + interrupt-parent = <&oic>; + interrupt-controller; + interrupts = <17 IRQ_TYPE_LEVEL_HIGH>; + #interrupt-cells = <2>; + + tod_pins: tod_pins { + pins = "GPIO_36"; + function = "ptpsync_1"; + }; + + fc0_a_pins: fcb4-i2c-pins { + /* RXD, TXD */ + pins = "GPIO_9", "GPIO_10"; + function = "fc0_a"; + }; + + }; + + serdes: serdes@e202c000 { + compatible = "microchip,lan966x-serdes"; + reg = <0xe202c000 0x9c>, + <0xe2004010 0x4>; + #phy-cells = <2>; + }; + + mdio1: mdio@e200413c { + #address-cells = <1>; + #size-cells = <0>; + compatible = "microchip,lan966x-miim"; + reg = <0xe200413c 0x24>, + <0xe2010020 0x4>; + + resets = <&reset 0>; + reset-names = "switch"; + + lan966x_phy0: ethernet-lan966x_phy@1 { + reg = <1>; + }; + + lan966x_phy1: ethernet-lan966x_phy@2 { + reg = <2>; + }; + }; + + switch: switch@e0000000 { + compatible = "microchip,lan966x-switch"; + reg = <0xe0000000 0x0100000>, + <0xe2000000 0x0800000>; + reg-names = "cpu", "gcb"; + + interrupt-parent = <&oic>; + interrupts = <12 IRQ_TYPE_LEVEL_HIGH>, + <9 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "xtr", "ana"; + + resets = <&reset 0>; + reset-names = "switch"; + + pinctrl-names = "default"; + pinctrl-0 = <&tod_pins>; + + ethernet-ports { + #address-cells = <1>; + #size-cells = <0>; + + port0: port@0 { + phy-handle = <&lan966x_phy0>; + + reg = <0>; + phy-mode = "gmii"; + phys = <&serdes 0 CU(0)>; + }; + + port1: port@1 { + phy-handle = <&lan966x_phy1>; + + reg = <1>; + phy-mode = "gmii"; + phys = <&serdes 1 CU(1)>; + }; + }; + }; + }; + }; + }; +}; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 568410e64ce6..4bfc3f2aafa4 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6241,6 +6241,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa76e, dpc_log_size); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5020, of_pci_make_dev_node); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5021, of_pci_make_dev_node); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REDHAT, 0x0005, of_pci_make_dev_node); +DECLARE_PCI_FIXUP_FINAL(0x1055, 0x9660, of_pci_make_dev_node); /* * Devices known to require a longer delay before first config space access From patchwork Mon May 27 16:14:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13675616 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (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 5538616EBF7; Mon, 27 May 2024 16:15:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826536; cv=none; b=kkI4jVjVzahOTwC5j8aIa64QRCU2/pEl+RRn5NLaK8KFBSiruw4gzUHNIO9Kr9In9aKzvcoqgppzTTbnBXoM27ET2GzzvM1WLfgUZkltk3Isf9U0rP1Z3kNSFw3j7py+6b0CAVj4FfwsTwNSZfj+02ndzmvhmhVludJoaNpqlDE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716826536; 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a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1716826533; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=S5EWnWVm8Boacgm88RxHxweJ58Kbq8GGMqtCde3uKZI=; b=hZGkBaDT6XPUEKAWzhUuB2+uCGFMlArWDpCILqxRuPBbHcghizqQZSlO6wFCsZiI1gmal1 qJix31+53cvT67bFzT2JMWd2PWAYeSdFM1JBSybqfgMBH9ymCqyP6eNoMY5TS+PA0UvHr5 JP5evTTr7etsXnKUux/tPEQ/0JRsRD1zp8al+pZvukRpuvvTQUMs1ewOkEV/nbBaYldyXb OdwNsy9IevypTwYfC/wG2jQvoCEMvMe81wNzeCXH//bQZkxfHBHW/lg+ax8mQk+C3xk030 GUKfOk8LDGvsh2bB27tPwafLEVhic2aBVX0Eu7S8iViYTvAmW7o8yOs4jNpA4Q== From: Herve Codina To: Simon Horman , Sai Krishna Gajula , Herve Codina , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lee Jones , Arnd Bergmann , Horatiu Vultur , UNGLinuxDriver@microchip.com, Andrew Lunn , Heiner Kallweit , Russell King , Saravana Kannan , Bjorn Helgaas , Philipp Zabel , Lars Povlsen , Steen Hegelund , Daniel Machon , Alexandre Belloni Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Allan Nielsen , Steen Hegelund , Luca Ceresoli , Thomas Petazzoni Subject: [PATCH v2 19/19] MAINTAINERS: Add the Microchip LAN966x PCI driver entry Date: Mon, 27 May 2024 18:14:46 +0200 Message-ID: <20240527161450.326615-20-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240527161450.326615-1-herve.codina@bootlin.com> References: <20240527161450.326615-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com After contributing the driver, add myself as the maintainer for the Microchip LAN966x PCI driver. Signed-off-by: Herve Codina --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index baeb307344cd..c84ec27ccbe4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14733,6 +14733,12 @@ S: Maintained F: Documentation/devicetree/bindings/interrupt-controller/microchip,lan966x-oic.yaml F: drivers/irqchip/irq-lan966x-oic.c +MICROCHIP LAN966X PCI DRIVER +M: Herve Codina +S: Maintained +F: drivers/mfd/lan966x_pci.c +F: drivers/mfd/lan966x_pci.dtso + MICROCHIP LCDFB DRIVER M: Nicolas Ferre L: linux-fbdev@vger.kernel.org