From patchwork Fri May 25 20:05:08 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 10428425 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3AC60602D6 for ; Fri, 25 May 2018 20:05:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 26E7A297D2 for ; Fri, 25 May 2018 20:05:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1BE30297D5; Fri, 25 May 2018 20:05:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, DKIM_VALID, FREEMAIL_FROM, MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6181D297D4 for ; Fri, 25 May 2018 20:05:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=OyGnH991L5VuYqcrBERLXw3JdKg7OVTNUfAS9A7QcAk=; b=Gml uo2MYSBLUJyXSuWxsWq/OqgZ86BFufXvBX5w0VD3Ifqif5K/Zosq5GYUvy/3ubmcVbCWTmQGPpxDR 2CCTodywRp4T9F+YJcLa9jpqHWoeTg30ezXs7FCCmU8icIblHqLVE48OI0KPMj9dChRnvKtdERs22 LNptiCZmYyl54vqZQpMDf85xD12zSV1gs0exwruOrGLl27KSFtFSKjx/KBM7x8n3dfuubbZCOEXuI rWn0ZrtTpcF+bgrQXf1t6lCetY/XhFhMC/tDiQ84D0ckNG+hOhE0HNZgyGQ1FnWoe50nuvPWTh4Xq W4Ec4GLw2kT8SAJDfYGr1TcKdm8/JsQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fMIxr-00046P-Tk; Fri, 25 May 2018 20:05:27 +0000 Received: from mail-wr0-x242.google.com ([2a00:1450:400c:c0c::242]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fMIxo-0003y8-6l for linux-arm-kernel@lists.infradead.org; Fri, 25 May 2018 20:05:26 +0000 Received: by mail-wr0-x242.google.com with SMTP id j1-v6so11094597wrm.1 for ; Fri, 25 May 2018 13:05:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=n4Q+m+BJvQbsfQNE4rdy2XYtQhTTVDLy7NR8pPDez7U=; b=mQd7ONq+dcc48U7HhLMAoygkuaZ4+qfo2m1zGLaJdzF/zCLH8PznnxLtCXPJuU8lSp HLgnHNLgEnDsgOfEdQlXH4Q+yqVVMBfes8o6XNozcr+yLziFMUGBzZacpQqFCxD2ax5r bvokK488R+KCLrfpe6qYCiB7HjNKo45jAonnvQ969FORfEc/yo7FbZacYjB61PZcobLU tMJNiVuTF1aXIKb9//qawcTvzbbe2CFCHitOljE6zZ8dlyCp0YbOGpmYYaemWYTKJoau ECXXDdSSvZAled9KEdqNKV3HqmUu30T2GxsA3yrDIu2ka8Tmj9bqExn1UTqxpDxGh3lC khfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=n4Q+m+BJvQbsfQNE4rdy2XYtQhTTVDLy7NR8pPDez7U=; b=GGyvYLzzmCtrbExeRO8VeGANdOZiPKd6YKfti2v4zW0txDAYqgBzCFmU+YwPC35nIe KiRBiAyyVS1I72JOhp+COSwBX8up5CXAVz76OAagC5j0ImtQj8b1ziSiBjOmRYgiOFE9 VF/CD9f6OFi8uOn6ayyJUl84nXNGwplf78TDuhbZ3YdQcrIy+JFcZDIsR9O0Suc81pHq q4NcfG7E7HJ3hdzYF28a6C2aj40ymAlDPExUZefeOo5wbfFhOHXsKUHYOY4wRA/pFn28 Ti+D7TUsSNupEJSCwd01Kxqwg63QlkedwoFBaQdwzsZ2GRmMVWzeWYFGupzSpxqDMXAr ODig== X-Gm-Message-State: ALKqPwckOGesylPZ10fNLxl6POT7n8QZtvi769/E6FBORbbizFnQdZLK 1Qka67bzDFNiv6HKDKGXf00wMW2M X-Google-Smtp-Source: AB8JxZqAaQNAXszmnunD3iUFiApGelbE2UpFybqVXZtpJIrLxWx3jer4evMrvJhOC6Qs981LJRmadg== X-Received: by 2002:adf:a398:: with SMTP id l24-v6mr3041737wrb.208.1527278711886; Fri, 25 May 2018 13:05:11 -0700 (PDT) Received: from kurokawa.lan (ip-86-49-107-50.net.upcbroadband.cz. [86.49.107.50]) by smtp.gmail.com with ESMTPSA id d12-v6sm18708233wre.39.2018.05.25.13.05.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 25 May 2018 13:05:10 -0700 (PDT) From: Marek Vasut X-Google-Original-From: Marek Vasut To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V2] ARM: shmobile: Rework the PMIC IRQ line quirk Date: Fri, 25 May 2018 22:05:08 +0200 Message-Id: <20180525200508.22207-1-marek.vasut+renesas@gmail.com> X-Mailer: git-send-email 2.16.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180525_130524_274460_D2912538 X-CRM114-Status: GOOD ( 22.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Geert Uytterhoeven , Kuninori Morimoto , linux-renesas-soc@vger.kernel.org, Wolfram Sang , Simon Horman , Marek Vasut MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Rather than hard-coding the quirk topology, which stopped scaling, parse the information from DT. The code looks for all compatible PMICs -- da9036 and da9210 -- and checks if their IRQ line is tied to the same pin. If so, the code sends a matching sequence to the PMIC to deassert the IRQ. Signed-off-by: Marek Vasut Cc: Geert Uytterhoeven Cc: Kuninori Morimoto Cc: Simon Horman Cc: Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org --- V2: - Replace the DT shared IRQ check loop with memcmp() - Send the I2C message to deassert the IRQ line to all PMICs in the list with shared IRQ line instead of just one - Add comment that this works only in case all the PMICs are on the same I2C bus --- arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c | 117 ++++++++++++++++----- 1 file changed, 93 insertions(+), 24 deletions(-) diff --git a/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c b/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c index 93f628acfd94..4db8d9ea5f97 100644 --- a/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c +++ b/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c @@ -31,8 +31,10 @@ #include #include #include +#include #include #include +#include #include @@ -44,34 +46,47 @@ /* start of DA9210 System Control and Event Registers */ #define DA9210_REG_MASK_A 0x54 +struct regulator_quirk { + struct list_head list; + const struct of_device_id *id; + struct of_phandle_args irq_args; + struct i2c_msg i2c_msg; + bool shared; /* IRQ line is shared */ +}; + +static LIST_HEAD(quirk_list); static void __iomem *irqc; /* first byte sets the memory pointer, following are consecutive reg values */ static u8 da9063_irq_clr[] = { DA9063_REG_IRQ_MASK_A, 0xff, 0xff, 0xff, 0xff }; static u8 da9210_irq_clr[] = { DA9210_REG_MASK_A, 0xff, 0xff }; -static struct i2c_msg da9xxx_msgs[3] = { - { - .addr = 0x58, - .len = ARRAY_SIZE(da9063_irq_clr), - .buf = da9063_irq_clr, - }, { - .addr = 0x68, - .len = ARRAY_SIZE(da9210_irq_clr), - .buf = da9210_irq_clr, - }, { - .addr = 0x70, - .len = ARRAY_SIZE(da9210_irq_clr), - .buf = da9210_irq_clr, - }, +static struct i2c_msg da9063_msgs = { + .addr = 0x00, + .len = ARRAY_SIZE(da9063_irq_clr), + .buf = da9063_irq_clr, +}; + +static struct i2c_msg da9210_msgs = { + .addr = 0x00, + .len = ARRAY_SIZE(da9210_irq_clr), + .buf = da9210_irq_clr, +}; + +static const struct of_device_id rcar_gen2_quirk_match[] = { + { .compatible = "dlg,da9063", .data = &da9063_msgs }, + { .compatible = "dlg,da9210", .data = &da9210_msgs }, + {}, }; static int regulator_quirk_notify(struct notifier_block *nb, unsigned long action, void *data) { + struct regulator_quirk *pos, *tmp; struct device *dev = data; struct i2c_client *client; static bool done; + int ret; u32 mon; if (done) @@ -88,17 +103,20 @@ static int regulator_quirk_notify(struct notifier_block *nb, client = to_i2c_client(dev); dev_dbg(dev, "Detected %s\n", client->name); - if ((client->addr == 0x58 && !strcmp(client->name, "da9063")) || - (client->addr == 0x68 && !strcmp(client->name, "da9210")) || - (client->addr == 0x70 && !strcmp(client->name, "da9210"))) { - int ret, len; + /* + * Send message to all PMICs that share an IRQ line to deassert it. + * + * WARNING: This works only if all the PMICs are on the same I2C bus. + */ + list_for_each_entry(pos, &quirk_list, list) { + if (!pos->shared) + continue; - /* There are two DA9210 on Stout, one on the other boards. */ - len = of_machine_is_compatible("renesas,stout") ? 3 : 2; + dev_info(&client->dev, "clearing %s@0x%02x interrupts\n", + pos->id->compatible, pos->i2c_msg.addr); - dev_info(&client->dev, "clearing da9063/da9210 interrupts\n"); - ret = i2c_transfer(client->adapter, da9xxx_msgs, len); - if (ret != len) + ret = i2c_transfer(client->adapter, &pos->i2c_msg, 1); + if (ret != 1) dev_err(&client->dev, "i2c error %d\n", ret); } @@ -111,6 +129,11 @@ static int regulator_quirk_notify(struct notifier_block *nb, remove: dev_info(dev, "IRQ2 is not asserted, removing quirk\n"); + list_for_each_entry_safe(pos, tmp, &quirk_list, list) { + list_del(&pos->list); + kfree(pos); + } + done = true; iounmap(irqc); return 0; @@ -122,7 +145,13 @@ static struct notifier_block regulator_quirk_nb = { static int __init rcar_gen2_regulator_quirk(void) { - u32 mon; + struct device_node *np; + const struct of_device_id *id; + struct regulator_quirk *quirk; + struct regulator_quirk *pos; + struct of_phandle_args *argsa, *argsb; + u32 mon, addr; + int ret; if (!of_machine_is_compatible("renesas,koelsch") && !of_machine_is_compatible("renesas,lager") && @@ -130,6 +159,46 @@ static int __init rcar_gen2_regulator_quirk(void) !of_machine_is_compatible("renesas,gose")) return -ENODEV; + for_each_matching_node_and_match(np, rcar_gen2_quirk_match, &id) { + if (!np || !of_device_is_available(np)) + break; + + quirk = kzalloc(sizeof(*quirk), GFP_KERNEL); + + argsa = &quirk->irq_args; + memcpy(&quirk->i2c_msg, id->data, sizeof(quirk->i2c_msg)); + + ret = of_property_read_u32(np, "reg", &addr); + if (ret) + return ret; + + quirk->id = id; + quirk->i2c_msg.addr = addr; + quirk->shared = false; + + ret = of_irq_parse_one(np, 0, &quirk->irq_args); + if (ret) + return ret; + + list_for_each_entry(pos, &quirk_list, list) { + argsa = &quirk->irq_args; + argsb = &pos->irq_args; + + if (argsa->args_count != argsb->args_count) + continue; + + ret = memcmp(argsa->args, argsb->args, + argsa->args_count * + sizeof(argsa->args[0])); + if (!ret) { + pos->shared = true; + quirk->shared = true; + } + } + + list_add_tail(&quirk->list, &quirk_list); + } + irqc = ioremap(IRQC_BASE, PAGE_SIZE); if (!irqc) return -ENOMEM;