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GET /api/patches/814298/?format=api
{ "id": 814298, "url": "http://patchwork.ozlabs.org/api/patches/814298/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20170915140411.31716-9-romain.izard.pro@gmail.com/", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/projects/3/?format=api", "name": "Linux MTD development", "link_name": "linux-mtd", "list_id": "linux-mtd.lists.infradead.org", "list_email": "linux-mtd@lists.infradead.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170915140411.31716-9-romain.izard.pro@gmail.com>", "list_archive_url": null, "date": "2017-09-15T14:04:10", "name": "[v2,8/9] atmel_flexcom: Support backup mode", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "1e900756cc432cce1416b9d27eefdff16e657f04", "submitter": { "id": 8236, "url": "http://patchwork.ozlabs.org/api/people/8236/?format=api", "name": "Romain Izard", "email": "romain.izard.pro@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20170915140411.31716-9-romain.izard.pro@gmail.com/mbox/", "series": [ { "id": 3316, "url": "http://patchwork.ozlabs.org/api/series/3316/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=3316", "date": "2017-09-15T14:04:02", "name": "Various patches for SAMA5D2 backup mode", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/3316/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/814298/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/814298/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org; 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a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=ODEsLfkb3lvipUolMLb7ScB3ja2VrqHu5R+0EqPP1yQ=;\n\tb=Vz4eHogNuFZtrs459jCkrZME/mXSzcY/ntIVWkZYaQacPkTHTx+njTFg+TGvC55/6i\n\tfxAGIbXjFhIcmzj0/tIpQRqw2vlkWTX+9tXreC8ftfeMtkQ+h2LVNgTDzRdKsFmA1h0l\n\tBoUx8D/ChIvJeCrHFobMw65IwnmDw1G8b8LJIWg9foQhuHm4QZtvlouSzxYIVHIYYoor\n\tSiso/gJKctJhI44NEv6Q+WINXYZhpFW5Z7Nd7GWgv0pqGNRgri6O8T9t8B6vYUYvXOk2\n\t6JU/qDokz5guhug6069TrZgeBZ7+jkWj7YyctmMZO3teypn/pzbGdhNt5dtTVsMhXshh\n\tuhtQ==" ], "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=ODEsLfkb3lvipUolMLb7ScB3ja2VrqHu5R+0EqPP1yQ=;\n\tb=W2LQcEsjSADZE99F4VbQs7eYASQ706ZR7B2VqS53TJpFaGddacGFtJpWm7FLmGwnZF\n\t/h0XlJkdsOmfHACQiQyNaDlV1Xrvf9/biZGtrImBGqK23GGuNM7Xd5nXhQ0k1hJBJ3Hj\n\tlkqa/DhsSalnNGPNzpo/4KD5AnHVEGoRZ1N8EVITOvQWrCRndW6Rm2H01WCmnfM+Zkwk\n\trHpcLkc9jrDXmyFSD8MENIrcI7MPWxfWw8BRbT9AIjUfYYYstFXZI3R8yiXw4vgfpR5f\n\tyNcWBPmwGK1lHaL9eCZQlNaHeE+g8/ioEyNLH/eSzm/wQApd2k/W2zUDb8znc7pKMyEf\n\t31rw==", "X-Gm-Message-State": "AHPjjUhl5S3PqiWKWOPnChfkwtIs8g1RT4bZCl3nFDu8Oe+dPie6wvqn\n\tPeTWUD9gZdb5Mw==", "X-Google-Smtp-Source": "AOwi7QCOef+RXEJBnjjDFj/p05u60boDHKBXpRxZDqyBH0nHdF2araAMSHn2pIOqKXfTYBc49j6e7w==", "X-Received": "by 10.28.60.8 with SMTP id j8mr2670666wma.16.1505484323627;\n\tFri, 15 Sep 2017 07:05:23 -0700 (PDT)", "From": "Romain Izard <romain.izard.pro@gmail.com>", "To": "Nicolas Ferre <nicolas.ferre@microchip.com>,\n\tAlexandre Belloni <alexandre.belloni@free-electrons.com>,\n\tBoris Brezillon <boris.brezillon@free-electrons.com>,\n\tMichael Turquette <mturquette@baylibre.com>,\n\tStephen Boyd <sboyd@codeaurora.org>,\n\tLudovic Desroches <ludovic.desroches@microchip.com>,\n\tWenyou Yang <wenyou.yang@atmel.com>, Josh Wu <rainyfeeling@outlook.com>, \n\tDavid Woodhouse <dwmw2@infradead.org>,\n\tBrian Norris <computersforpeace@gmail.com>,\n\tMarek Vasut <marek.vasut@gmail.com>,\n\tCyrille Pitchen <cyrille.pitchen@wedev4u.fr>,\n\tThierry Reding <thierry.reding@gmail.com>,\n\tRichard Genoud <richard.genoud@gmail.com>,\n\tGreg Kroah-Hartman <gregkh@linuxfoundation.org>,\n\tAlan Stern <stern@rowland.harvard.edu>", "Subject": "[PATCH v2 8/9] atmel_flexcom: Support backup mode", "Date": "Fri, 15 Sep 2017 16:04:10 +0200", "Message-Id": "<20170915140411.31716-9-romain.izard.pro@gmail.com>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20170915140411.31716-1-romain.izard.pro@gmail.com>", "References": "<20170915140411.31716-1-romain.izard.pro@gmail.com>", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20170915_070545_983839_694DBD3A ", "X-CRM114-Status": "GOOD ( 14.68 )", "X-Spam-Score": "-2.0 (--)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-2.0 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/,\n\tno\n\ttrust [2a00:1450:400c:c09:0:0:0:241 listed in] [list.dnswl.org]\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail\n\tprovider (romain.izard.pro[at]gmail.com)\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]\n\t-0.1 DKIM_VALID Message has at least one valid DKIM or DK signature\n\t0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n\tnot necessarily valid\n\t-0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n\tauthor's domain", "X-BeenThere": "linux-mtd@lists.infradead.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-mtd/>", "List-Post": "<mailto:linux-mtd@lists.infradead.org>", "List-Help": "<mailto:linux-mtd-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>", "Cc": "linux-pwm@vger.kernel.org, linux-usb@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,\n\tlinux-serial@vger.kernel.org, Romain Izard <romain.izard.pro@gmail.com>, \n\tlinux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-mtd\" <linux-mtd-bounces@lists.infradead.org>", "Errors-To": "linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "The controller used by a flexcom module is configured at boot, and left\nalone after this. As the configuration will be lost after backup mode,\nrestore the state of the flexcom driver on resume.\n\nSigned-off-by: Romain Izard <romain.izard.pro@gmail.com>\n---\n drivers/mfd/atmel-flexcom.c | 65 ++++++++++++++++++++++++++++++++++-----------\n 1 file changed, 50 insertions(+), 15 deletions(-)", "diff": "diff --git a/drivers/mfd/atmel-flexcom.c b/drivers/mfd/atmel-flexcom.c\nindex 064bde9cff5a..ef1235c4a179 100644\n--- a/drivers/mfd/atmel-flexcom.c\n+++ b/drivers/mfd/atmel-flexcom.c\n@@ -39,34 +39,44 @@\n #define FLEX_MR_OPMODE(opmode)\t(((opmode) << FLEX_MR_OPMODE_OFFSET) &\t\\\n \t\t\t\t FLEX_MR_OPMODE_MASK)\n \n+struct atmel_flexcom {\n+\tvoid __iomem *base;\n+\tu32 opmode;\n+\tstruct clk *clk;\n+};\n \n static int atmel_flexcom_probe(struct platform_device *pdev)\n {\n \tstruct device_node *np = pdev->dev.of_node;\n-\tstruct clk *clk;\n \tstruct resource *res;\n-\tvoid __iomem *base;\n-\tu32 opmode;\n+\tstruct atmel_flexcom *afc;\n \tint err;\n+\tu32 val;\n+\n+\tafc = devm_kzalloc(&pdev->dev, sizeof(*afc), GFP_KERNEL);\n+\tif (!afc)\n+\t\treturn -ENOMEM;\n \n-\terr = of_property_read_u32(np, \"atmel,flexcom-mode\", &opmode);\n+\tplatform_set_drvdata(pdev, afc);\n+\n+\terr = of_property_read_u32(np, \"atmel,flexcom-mode\", &afc->opmode);\n \tif (err)\n \t\treturn err;\n \n-\tif (opmode < ATMEL_FLEXCOM_MODE_USART ||\n-\t opmode > ATMEL_FLEXCOM_MODE_TWI)\n+\tif (afc->opmode < ATMEL_FLEXCOM_MODE_USART ||\n+\t afc->opmode > ATMEL_FLEXCOM_MODE_TWI)\n \t\treturn -EINVAL;\n \n \tres = platform_get_resource(pdev, IORESOURCE_MEM, 0);\n-\tbase = devm_ioremap_resource(&pdev->dev, res);\n-\tif (IS_ERR(base))\n-\t\treturn PTR_ERR(base);\n+\tafc->base = devm_ioremap_resource(&pdev->dev, res);\n+\tif (IS_ERR(afc->base))\n+\t\treturn PTR_ERR(afc->base);\n \n-\tclk = devm_clk_get(&pdev->dev, NULL);\n-\tif (IS_ERR(clk))\n-\t\treturn PTR_ERR(clk);\n+\tafc->clk = devm_clk_get(&pdev->dev, NULL);\n+\tif (IS_ERR(afc->clk))\n+\t\treturn PTR_ERR(afc->clk);\n \n-\terr = clk_prepare_enable(clk);\n+\terr = clk_prepare_enable(afc->clk);\n \tif (err)\n \t\treturn err;\n \n@@ -76,9 +86,10 @@ static int atmel_flexcom_probe(struct platform_device *pdev)\n \t * inaccessible and are read as zero. Also the external I/O lines of the\n \t * Flexcom are muxed to reach the selected device.\n \t */\n-\twritel(FLEX_MR_OPMODE(opmode), base + FLEX_MR);\n+\tval = FLEX_MR_OPMODE(afc->opmode);\n+\twritel(val, afc->base + FLEX_MR);\n \n-\tclk_disable_unprepare(clk);\n+\tclk_disable_unprepare(afc->clk);\n \n \treturn devm_of_platform_populate(&pdev->dev);\n }\n@@ -89,10 +100,34 @@ static const struct of_device_id atmel_flexcom_of_match[] = {\n };\n MODULE_DEVICE_TABLE(of, atmel_flexcom_of_match);\n \n+#ifdef CONFIG_PM_SLEEP\n+static int atmel_flexcom_resume(struct device *dev)\n+{\n+\tstruct atmel_flexcom *afc = dev_get_drvdata(dev);\n+\tint err;\n+\tu32 val;\n+\n+\terr = clk_prepare_enable(afc->clk);\n+\tif (err)\n+\t\treturn err;\n+\n+\tval = FLEX_MR_OPMODE(afc->opmode),\n+\twritel(val, afc->base + FLEX_MR);\n+\n+\tclk_disable_unprepare(afc->clk);\n+\n+\treturn 0;\n+}\n+#endif\n+\n+static SIMPLE_DEV_PM_OPS(atmel_flexcom_pm_ops, NULL,\n+\t\t\t atmel_flexcom_resume);\n+\n static struct platform_driver atmel_flexcom_driver = {\n \t.probe\t= atmel_flexcom_probe,\n \t.driver\t= {\n \t\t.name\t\t= \"atmel_flexcom\",\n+\t\t.pm\t\t= &atmel_flexcom_pm_ops,\n \t\t.of_match_table\t= atmel_flexcom_of_match,\n \t},\n };\n", "prefixes": [ "v2", "8/9" ] }