From patchwork Tue Jun 8 10:47:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Jeffery X-Patchwork-Id: 457112 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25B0CC4743F for ; Tue, 8 Jun 2021 10:48:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0983161289 for ; Tue, 8 Jun 2021 10:48:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231819AbhFHKus (ORCPT ); Tue, 8 Jun 2021 06:50:48 -0400 Received: from new4-smtp.messagingengine.com ([66.111.4.230]:35541 "EHLO new4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229942AbhFHKus (ORCPT ); Tue, 8 Jun 2021 06:50:48 -0400 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id 0342F5804DB; Tue, 8 Jun 2021 06:48:55 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Tue, 08 Jun 2021 06:48:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aj.id.au; h=from :to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm3; bh=z1l2WgdHDvoWz 58DqENQtjGt2IzyH0bE2ZFKwhcYczs=; b=NfrhPg8rSEa6VpinbWE9ACGCVsNu7 l/P/+AlYt5eF1QxAkiUAKHZJKdyBAEHKjmtU9/4wyzd+gg40YSBhODbRpkBkvbOY 7bxtLGN1zdOiWPB6z+BD5i2TR8de29hJjwdHzLpLFEc5wMYXbNJaRN83zxNN6AXu yOQV5EEpNTdzJ6L9U95ZzoaH1v60Fqe8cxRDDoIvfPIN/2CH61qgNoEmSyeVRVj8 5keUfvBxJiqU+OVPVxa0Kt47AnI4fWIdp0lb1ImmRB7oKoz1xsaoPAwl8HkSZQ8x vOO7k0efOcd2K5+3yX9xNQ0T6ydzUKm0eRLGcOUt6y6nD44uKjPGjcwZw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=z1l2WgdHDvoWz58DqENQtjGt2IzyH0bE2ZFKwhcYczs=; b=Z7YGrWtd SEqeXAFwbwlT1NNFg47hdLoiVmM0H6nest/hvSUH7/RE7mYHg5OMzwdoM5KNDVfE EPDuJI0E5x1iIQzUItLK/g3Xf6C18iJOdiiwUjZfHh6KS5PEGhBx6kaj+qE8vPw6 P4jc0PtMDFuuKJCTh25i/1IJnjaBKoX8r7j/7t5D0v4DOf4uIUhlKomENgnJPikP E74r1YzI80vSeqsfr+YUEtCIvL1SpEYnpWv1pqD5ONGuqEpvufbiKglJQZG/Ldz9 wufdf8aL3mGzBTbPwsGr4FwiCDcsDjhZmcKwwjvI61kRMWzoQ6X1iLJ6PgiAfdIK CfNaTUKqKLHlUg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrfedtledgudejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofgjfhgggfestdekre dtredttdenucfhrhhomheptehnughrvgifucflvghffhgvrhihuceorghnughrvgifsegr jhdrihgurdgruheqnecuggftrfgrthhtvghrnhepjefgvdevheetkeevgeegleelgfelte etjeffleffvdduudevieffgeetleevhfetnecuvehluhhsthgvrhfuihiivgepudenucfr rghrrghmpehmrghilhhfrhhomheprghnughrvgifsegrjhdrihgurdgruh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 8 Jun 2021 06:48:48 -0400 (EDT) From: Andrew Jeffery To: openipmi-developer@lists.sourceforge.net, openbmc@lists.ozlabs.org, minyard@acm.org Cc: devicetree@vger.kernel.org, tmaimon77@gmail.com, linux-aspeed@lists.ozlabs.org, avifishman70@gmail.com, venture@google.com, linux-kernel@vger.kernel.org, tali.perry1@gmail.com, robh+dt@kernel.org, chiawei_wang@aspeedtech.com, linux-arm-kernel@lists.infradead.org, benjaminfair@google.com, arnd@arndb.de, zweiss@equinix.com, joel@jms.id.au, KWLIU@nuvoton.com Subject: [PATCH v4 05/16] ipmi: kcs_bmc: Turn the driver data-structures inside-out Date: Tue, 8 Jun 2021 20:17:46 +0930 Message-Id: <20210608104757.582199-6-andrew@aj.id.au> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210608104757.582199-1-andrew@aj.id.au> References: <20210608104757.582199-1-andrew@aj.id.au> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Make the KCS device drivers responsible for allocating their own memory. Until now the private data for the device driver was allocated internal to the private data for the chardev interface. This coupling required the slightly awkward API of passing through the struct size for the driver private data to the chardev constructor, and then retrieving a pointer to the driver private data from the allocated chardev memory. In addition to being awkward, the arrangement prevents the implementation of alternative userspace interfaces as the device driver private data is not independent. Peel a layer off the onion and turn the data-structures inside out by exploiting container_of() and embedding `struct kcs_device` in the driver private data. Signed-off-by: Andrew Jeffery Reviewed-by: Zev Weiss --- drivers/char/ipmi/kcs_bmc.c | 17 ++++++-- drivers/char/ipmi/kcs_bmc.h | 12 ++---- drivers/char/ipmi/kcs_bmc_aspeed.c | 54 +++++++++++++----------- drivers/char/ipmi/kcs_bmc_cdev_ipmi.c | 60 ++++++++++++++++++--------- drivers/char/ipmi/kcs_bmc_npcm7xx.c | 34 +++++++++------ 5 files changed, 110 insertions(+), 67 deletions(-) diff --git a/drivers/char/ipmi/kcs_bmc.c b/drivers/char/ipmi/kcs_bmc.c index ef5c48ffe74a..07bb6747f29a 100644 --- a/drivers/char/ipmi/kcs_bmc.c +++ b/drivers/char/ipmi/kcs_bmc.c @@ -44,12 +44,21 @@ int kcs_bmc_handle_event(struct kcs_bmc *kcs_bmc) } EXPORT_SYMBOL(kcs_bmc_handle_event); -struct kcs_bmc *kcs_bmc_ipmi_alloc(struct device *dev, int sizeof_priv, u32 channel); -struct kcs_bmc *kcs_bmc_alloc(struct device *dev, int sizeof_priv, u32 channel) +int kcs_bmc_ipmi_add_device(struct kcs_bmc *kcs_bmc); +int kcs_bmc_add_device(struct kcs_bmc *kcs_bmc) { - return kcs_bmc_ipmi_alloc(dev, sizeof_priv, channel); + return kcs_bmc_ipmi_add_device(kcs_bmc); } -EXPORT_SYMBOL(kcs_bmc_alloc); +EXPORT_SYMBOL(kcs_bmc_add_device); + +int kcs_bmc_ipmi_remove_device(struct kcs_bmc *kcs_bmc); +void kcs_bmc_remove_device(struct kcs_bmc *kcs_bmc) +{ + if (kcs_bmc_ipmi_remove_device(kcs_bmc)) + pr_warn("Failed to remove device for KCS channel %d\n", + kcs_bmc->channel); +} +EXPORT_SYMBOL(kcs_bmc_remove_device); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Haiyue Wang "); diff --git a/drivers/char/ipmi/kcs_bmc.h b/drivers/char/ipmi/kcs_bmc.h index febea0c8deb4..f3ed89e7da98 100644 --- a/drivers/char/ipmi/kcs_bmc.h +++ b/drivers/char/ipmi/kcs_bmc.h @@ -67,6 +67,8 @@ struct kcs_ioreg { }; struct kcs_bmc { + struct device *dev; + spinlock_t lock; u32 channel; @@ -94,17 +96,11 @@ struct kcs_bmc { u8 *kbuffer; struct miscdevice miscdev; - - unsigned long priv[]; }; -static inline void *kcs_bmc_priv(struct kcs_bmc *kcs_bmc) -{ - return kcs_bmc->priv; -} - int kcs_bmc_handle_event(struct kcs_bmc *kcs_bmc); -struct kcs_bmc *kcs_bmc_alloc(struct device *dev, int sizeof_priv, u32 channel); +int kcs_bmc_add_device(struct kcs_bmc *kcs_bmc); +void kcs_bmc_remove_device(struct kcs_bmc *kcs_bmc); u8 kcs_bmc_read_data(struct kcs_bmc *kcs_bmc); void kcs_bmc_write_data(struct kcs_bmc *kcs_bmc, u8 data); diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c index 01ebb9da3d49..b07cbc423dd5 100644 --- a/drivers/char/ipmi/kcs_bmc_aspeed.c +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c @@ -61,6 +61,8 @@ #define LPC_STR4 0x11C struct aspeed_kcs_bmc { + struct kcs_bmc kcs_bmc; + struct regmap *map; }; @@ -69,9 +71,14 @@ struct aspeed_kcs_of_ops { int (*get_io_address)(struct platform_device *pdev); }; +static inline struct aspeed_kcs_bmc *to_aspeed_kcs_bmc(struct kcs_bmc *kcs_bmc) +{ + return container_of(kcs_bmc, struct aspeed_kcs_bmc, kcs_bmc); +} + static u8 aspeed_kcs_inb(struct kcs_bmc *kcs_bmc, u32 reg) { - struct aspeed_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc); u32 val = 0; int rc; @@ -83,7 +90,7 @@ static u8 aspeed_kcs_inb(struct kcs_bmc *kcs_bmc, u32 reg) static void aspeed_kcs_outb(struct kcs_bmc *kcs_bmc, u32 reg, u8 data) { - struct aspeed_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc); int rc; rc = regmap_write(priv->map, reg, data); @@ -92,7 +99,7 @@ static void aspeed_kcs_outb(struct kcs_bmc *kcs_bmc, u32 reg, u8 data) static void aspeed_kcs_updateb(struct kcs_bmc *kcs_bmc, u32 reg, u8 mask, u8 val) { - struct aspeed_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc); int rc; rc = regmap_update_bits(priv->map, reg, mask, val); @@ -114,7 +121,7 @@ static void aspeed_kcs_updateb(struct kcs_bmc *kcs_bmc, u32 reg, u8 mask, u8 val */ static void aspeed_kcs_set_address(struct kcs_bmc *kcs_bmc, u16 addr) { - struct aspeed_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc); switch (kcs_bmc->channel) { case 1: @@ -148,7 +155,7 @@ static void aspeed_kcs_set_address(struct kcs_bmc *kcs_bmc, u16 addr) static void aspeed_kcs_enable_channel(struct kcs_bmc *kcs_bmc, bool enable) { - struct aspeed_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc); switch (kcs_bmc->channel) { case 1: @@ -325,17 +332,16 @@ static int aspeed_kcs_of_v2_get_io_address(struct platform_device *pdev) static int aspeed_kcs_probe(struct platform_device *pdev) { const struct aspeed_kcs_of_ops *ops; - struct device *dev = &pdev->dev; struct aspeed_kcs_bmc *priv; struct kcs_bmc *kcs_bmc; struct device_node *np; int rc, channel, addr; - np = dev->of_node->parent; + np = pdev->dev.of_node->parent; if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") && !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) { - dev_err(dev, "unsupported LPC device binding\n"); + dev_err(&pdev->dev, "unsupported LPC device binding\n"); return -ENODEV; } ops = of_device_get_match_data(&pdev->dev); @@ -346,20 +352,22 @@ static int aspeed_kcs_probe(struct platform_device *pdev) if (channel < 0) return channel; - kcs_bmc = kcs_bmc_alloc(&pdev->dev, sizeof(struct aspeed_kcs_bmc), channel); - if (!kcs_bmc) + addr = ops->get_io_address(pdev); + if (addr < 0) + return addr; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) return -ENOMEM; + kcs_bmc = &priv->kcs_bmc; + kcs_bmc->dev = &pdev->dev; + kcs_bmc->channel = channel; kcs_bmc->ioreg = ast_kcs_bmc_ioregs[channel - 1]; kcs_bmc->io_inputb = aspeed_kcs_inb; kcs_bmc->io_outputb = aspeed_kcs_outb; kcs_bmc->io_updateb = aspeed_kcs_updateb; - addr = ops->get_io_address(pdev); - if (addr < 0) - return addr; - - priv = kcs_bmc_priv(kcs_bmc); priv->map = syscon_node_to_regmap(pdev->dev.parent->of_node); if (IS_ERR(priv->map)) { dev_err(&pdev->dev, "Couldn't get regmap\n"); @@ -372,29 +380,27 @@ static int aspeed_kcs_probe(struct platform_device *pdev) if (rc) return rc; - dev_set_drvdata(dev, kcs_bmc); + platform_set_drvdata(pdev, priv); aspeed_kcs_enable_channel(kcs_bmc, true); - rc = misc_register(&kcs_bmc->miscdev); + rc = kcs_bmc_add_device(&priv->kcs_bmc); if (rc) { - dev_err(dev, "Unable to register device\n"); + dev_warn(&pdev->dev, "Failed to register channel %d: %d\n", kcs_bmc->channel, rc); return rc; } - dev_dbg(&pdev->dev, - "Probed KCS device %d (IDR=0x%x, ODR=0x%x, STR=0x%x)\n", - kcs_bmc->channel, kcs_bmc->ioreg.idr, kcs_bmc->ioreg.odr, - kcs_bmc->ioreg.str); + dev_info(&pdev->dev, "Initialised channel %d at 0x%x\n", kcs_bmc->channel, addr); return 0; } static int aspeed_kcs_remove(struct platform_device *pdev) { - struct kcs_bmc *kcs_bmc = dev_get_drvdata(&pdev->dev); + struct aspeed_kcs_bmc *priv = platform_get_drvdata(pdev); + struct kcs_bmc *kcs_bmc = &priv->kcs_bmc; - misc_deregister(&kcs_bmc->miscdev); + kcs_bmc_remove_device(kcs_bmc); return 0; } diff --git a/drivers/char/ipmi/kcs_bmc_cdev_ipmi.c b/drivers/char/ipmi/kcs_bmc_cdev_ipmi.c index 82c77994e481..5060643bf530 100644 --- a/drivers/char/ipmi/kcs_bmc_cdev_ipmi.c +++ b/drivers/char/ipmi/kcs_bmc_cdev_ipmi.c @@ -382,7 +382,7 @@ static int kcs_bmc_ipmi_release(struct inode *inode, struct file *filp) return 0; } -static const struct file_operations kcs_bmc_fops = { +static const struct file_operations kcs_bmc_ipmi_fops = { .owner = THIS_MODULE, .open = kcs_bmc_ipmi_open, .read = kcs_bmc_ipmi_read, @@ -392,36 +392,58 @@ static const struct file_operations kcs_bmc_fops = { .unlocked_ioctl = kcs_bmc_ipmi_ioctl, }; -struct kcs_bmc *kcs_bmc_ipmi_alloc(struct device *dev, int sizeof_priv, u32 channel); -struct kcs_bmc *kcs_bmc_ipmi_alloc(struct device *dev, int sizeof_priv, u32 channel) +int kcs_bmc_ipmi_add_device(struct kcs_bmc *kcs_bmc); +int kcs_bmc_ipmi_add_device(struct kcs_bmc *kcs_bmc) { - struct kcs_bmc *kcs_bmc; - - kcs_bmc = devm_kzalloc(dev, sizeof(*kcs_bmc) + sizeof_priv, GFP_KERNEL); - if (!kcs_bmc) - return NULL; + int rc; spin_lock_init(&kcs_bmc->lock); - kcs_bmc->channel = channel; - mutex_init(&kcs_bmc->mutex); init_waitqueue_head(&kcs_bmc->queue); - kcs_bmc->data_in = devm_kmalloc(dev, KCS_MSG_BUFSIZ, GFP_KERNEL); - kcs_bmc->data_out = devm_kmalloc(dev, KCS_MSG_BUFSIZ, GFP_KERNEL); - kcs_bmc->kbuffer = devm_kmalloc(dev, KCS_MSG_BUFSIZ, GFP_KERNEL); + kcs_bmc->data_in = devm_kmalloc(kcs_bmc->dev, KCS_MSG_BUFSIZ, GFP_KERNEL); + kcs_bmc->data_out = devm_kmalloc(kcs_bmc->dev, KCS_MSG_BUFSIZ, GFP_KERNEL); + kcs_bmc->kbuffer = devm_kmalloc(kcs_bmc->dev, KCS_MSG_BUFSIZ, GFP_KERNEL); kcs_bmc->miscdev.minor = MISC_DYNAMIC_MINOR; - kcs_bmc->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "%s%u", - DEVICE_NAME, channel); + kcs_bmc->miscdev.name = devm_kasprintf(kcs_bmc->dev, GFP_KERNEL, "%s%u", + DEVICE_NAME, kcs_bmc->channel); if (!kcs_bmc->data_in || !kcs_bmc->data_out || !kcs_bmc->kbuffer || !kcs_bmc->miscdev.name) - return NULL; - kcs_bmc->miscdev.fops = &kcs_bmc_fops; + return -ENOMEM; - return kcs_bmc; + kcs_bmc->miscdev.fops = &kcs_bmc_ipmi_fops; + + rc = misc_register(&kcs_bmc->miscdev); + if (rc) { + dev_err(kcs_bmc->dev, "Unable to register device: %d\n", rc); + return rc; + } + + dev_info(kcs_bmc->dev, "Initialised IPMI client for channel %d", kcs_bmc->channel); + + return 0; +} +EXPORT_SYMBOL(kcs_bmc_ipmi_add_device); + +int kcs_bmc_ipmi_remove_device(struct kcs_bmc *kcs_bmc); +int kcs_bmc_ipmi_remove_device(struct kcs_bmc *kcs_bmc) +{ + misc_deregister(&kcs_bmc->miscdev); + + spin_lock_irq(&kcs_bmc->lock); + kcs_bmc->running = 0; + kcs_bmc_ipmi_force_abort(kcs_bmc); + spin_unlock_irq(&kcs_bmc->lock); + + devm_kfree(kcs_bmc->dev, kcs_bmc->kbuffer); + devm_kfree(kcs_bmc->dev, kcs_bmc->data_out); + devm_kfree(kcs_bmc->dev, kcs_bmc->data_in); + devm_kfree(kcs_bmc->dev, kcs_bmc); + + return 0; } -EXPORT_SYMBOL(kcs_bmc_ipmi_alloc); +EXPORT_SYMBOL(kcs_bmc_ipmi_remove_device); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Haiyue Wang "); diff --git a/drivers/char/ipmi/kcs_bmc_npcm7xx.c b/drivers/char/ipmi/kcs_bmc_npcm7xx.c index 1f44aadec9e8..e06250285113 100644 --- a/drivers/char/ipmi/kcs_bmc_npcm7xx.c +++ b/drivers/char/ipmi/kcs_bmc_npcm7xx.c @@ -65,6 +65,8 @@ struct npcm7xx_kcs_reg { }; struct npcm7xx_kcs_bmc { + struct kcs_bmc kcs_bmc; + struct regmap *map; const struct npcm7xx_kcs_reg *reg; @@ -76,9 +78,14 @@ static const struct npcm7xx_kcs_reg npcm7xx_kcs_reg_tbl[KCS_CHANNEL_MAX] = { { .sts = KCS3ST, .dob = KCS3DO, .dib = KCS3DI, .ctl = KCS3CTL, .ie = KCS3IE }, }; +static inline struct npcm7xx_kcs_bmc *to_npcm7xx_kcs_bmc(struct kcs_bmc *kcs_bmc) +{ + return container_of(kcs_bmc, struct npcm7xx_kcs_bmc, kcs_bmc); +} + static u8 npcm7xx_kcs_inb(struct kcs_bmc *kcs_bmc, u32 reg) { - struct npcm7xx_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct npcm7xx_kcs_bmc *priv = to_npcm7xx_kcs_bmc(kcs_bmc); u32 val = 0; int rc; @@ -90,7 +97,7 @@ static u8 npcm7xx_kcs_inb(struct kcs_bmc *kcs_bmc, u32 reg) static void npcm7xx_kcs_outb(struct kcs_bmc *kcs_bmc, u32 reg, u8 data) { - struct npcm7xx_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct npcm7xx_kcs_bmc *priv = to_npcm7xx_kcs_bmc(kcs_bmc); int rc; rc = regmap_write(priv->map, reg, data); @@ -99,7 +106,7 @@ static void npcm7xx_kcs_outb(struct kcs_bmc *kcs_bmc, u32 reg, u8 data) static void npcm7xx_kcs_updateb(struct kcs_bmc *kcs_bmc, u32 reg, u8 mask, u8 data) { - struct npcm7xx_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct npcm7xx_kcs_bmc *priv = to_npcm7xx_kcs_bmc(kcs_bmc); int rc; rc = regmap_update_bits(priv->map, reg, mask, data); @@ -108,7 +115,7 @@ static void npcm7xx_kcs_updateb(struct kcs_bmc *kcs_bmc, u32 reg, u8 mask, u8 da static void npcm7xx_kcs_enable_channel(struct kcs_bmc *kcs_bmc, bool enable) { - struct npcm7xx_kcs_bmc *priv = kcs_bmc_priv(kcs_bmc); + struct npcm7xx_kcs_bmc *priv = to_npcm7xx_kcs_bmc(kcs_bmc); regmap_update_bits(priv->map, priv->reg->ctl, KCS_CTL_IBFIE, enable ? KCS_CTL_IBFIE : 0); @@ -155,11 +162,10 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev) return -ENODEV; } - kcs_bmc = kcs_bmc_alloc(dev, sizeof(*priv), chan); - if (!kcs_bmc) + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) return -ENOMEM; - priv = kcs_bmc_priv(kcs_bmc); priv->map = syscon_node_to_regmap(dev->parent->of_node); if (IS_ERR(priv->map)) { dev_err(dev, "Couldn't get regmap\n"); @@ -167,6 +173,9 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev) } priv->reg = &npcm7xx_kcs_reg_tbl[chan - 1]; + kcs_bmc = &priv->kcs_bmc; + kcs_bmc->dev = &pdev->dev; + kcs_bmc->channel = chan; kcs_bmc->ioreg.idr = priv->reg->dib; kcs_bmc->ioreg.odr = priv->reg->dob; kcs_bmc->ioreg.str = priv->reg->sts; @@ -174,16 +183,16 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev) kcs_bmc->io_outputb = npcm7xx_kcs_outb; kcs_bmc->io_updateb = npcm7xx_kcs_updateb; - dev_set_drvdata(dev, kcs_bmc); + platform_set_drvdata(pdev, priv); npcm7xx_kcs_enable_channel(kcs_bmc, true); rc = npcm7xx_kcs_config_irq(kcs_bmc, pdev); if (rc) return rc; - rc = misc_register(&kcs_bmc->miscdev); + rc = kcs_bmc_add_device(kcs_bmc); if (rc) { - dev_err(dev, "Unable to register device\n"); + dev_warn(&pdev->dev, "Failed to register channel %d: %d\n", kcs_bmc->channel, rc); return rc; } @@ -196,9 +205,10 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev) static int npcm7xx_kcs_remove(struct platform_device *pdev) { - struct kcs_bmc *kcs_bmc = dev_get_drvdata(&pdev->dev); + struct npcm7xx_kcs_bmc *priv = platform_get_drvdata(pdev); + struct kcs_bmc *kcs_bmc = &priv->kcs_bmc; - misc_deregister(&kcs_bmc->miscdev); + kcs_bmc_remove_device(kcs_bmc); return 0; }