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GET /api/patches/806537/?format=api
{ "id": 806537, "url": "http://patchwork.ozlabs.org/api/patches/806537/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/patch/20170828113532.32627-3-afaerber@suse.de/", "project": { "id": 19, "url": "http://patchwork.ozlabs.org/api/projects/19/?format=api", "name": "Linux IMX development", "link_name": "linux-imx", "list_id": "linux-imx-kernel.lists.patchwork.ozlabs.org", "list_email": "linux-imx-kernel@lists.patchwork.ozlabs.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170828113532.32627-3-afaerber@suse.de>", "list_archive_url": null, "date": "2017-08-28T11:35:30", "name": "[2/3] watchdog: Add Realtek RTD1295", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "45f2733b0c8439c67be522dc211df619fdf4d356", "submitter": { "id": 9542, "url": "http://patchwork.ozlabs.org/api/people/9542/?format=api", "name": "Andreas Färber", "email": "afaerber@suse.de" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-imx/patch/20170828113532.32627-3-afaerber@suse.de/mbox/", "series": [ { "id": 141, "url": "http://patchwork.ozlabs.org/api/series/141/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/list/?series=141", "date": "2017-08-28T11:35:31", "name": "arm64: Realtek RTD1295 watchdog", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/141/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/806537/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/806537/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming-imx@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming-imx@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) 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bh=IUGf4k8GROfYEdRFKkjrDaYx5LxnKsiPwO8az8PWjEg=;\n\tb=kBvZDg2nnX7mqs\n\t3mnR6fGhTvLXTHhXUuqweddrRL25271Rv8FkVLVzU9kIGdnssQBGT7vfR0TG7wpKBoXQjwnZbAmXO\n\tgusyWR0g44h0aJjfmle9KhUG5JeSZn7FXH+Ird54BcE1nz6VJA3VqUM21int/yQNbPJs94343AXJj\n\tBpUZxVtxOXL2xN/Czj4CAHlBkb82NlJXyy0IRaYPvwM44M0M59ousfccjaUluHSsYb1RnDf/3O2zH\n\tLKXxs8mh99/0a1KEOb+qvGoTy64ey9Qkaeow+dRIiWnlrgj7I7Yw1Vrg36xshr/BnwIWPh/UaEaAy\n\t559WZkTxRu0IpjGRYObw==;", "X-Virus-Scanned": "by amavisd-new at test-mx.suse.de", "From": "=?utf-8?q?Andreas_F=C3=A4rber?= <afaerber@suse.de>", "To": "Wim Van Sebroeck <wim@iguana.be>, Guenter Roeck <linux@roeck-us.net>,\n\tlinux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org", "Subject": "[PATCH 2/3] watchdog: Add Realtek RTD1295", "Date": "Mon, 28 Aug 2017 13:35:30 +0200", "Message-Id": "<20170828113532.32627-3-afaerber@suse.de>", "X-Mailer": "git-send-email 2.12.3", "In-Reply-To": "<20170828113532.32627-1-afaerber@suse.de>", "References": 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"<http://lists.infradead.org/mailman/options/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-arm-kernel/>", "List-Post": "<mailto:linux-arm-kernel@lists.infradead.org>", "List-Help": "<mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>", "Cc": "=?utf-8?b?6JKL5Li955C0?= <jiang.liqin@geniatech.com>,\n\tlinux-kernel@vger.kernel.org, =?utf-8?q?Andreas_F=C3=A4rber?=\n\t<afaerber@suse.de>, Roc He <hepeng@zidoo.tv>", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Sender": "\"linux-arm-kernel\" <linux-arm-kernel-bounces@lists.infradead.org>", "Errors-To": "linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org", "List-Id": "linux-imx-kernel.lists.patchwork.ozlabs.org" }, "content": "Add a watchdog driver for the Realtek RTD1295 SoC.\n\nBased on QNAP's arch/arm/mach-rtk119x/driver/rtk_watchdog.c code and\nmach-rtk119x/driver/dc2vo/fpga/include/iso_reg.h register defines.\n\nSigned-off-by: Andreas Färber <afaerber@suse.de>\n---\n drivers/watchdog/Kconfig | 10 +++\n drivers/watchdog/Makefile | 1 +\n drivers/watchdog/rtd119x_wdt.c | 152 +++++++++++++++++++++++++++++++++++++++++\n 3 files changed, 163 insertions(+)\n create mode 100644 drivers/watchdog/rtd119x_wdt.c", "diff": "diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig\nindex c722cbfdc7e6..8fa81518c3fa 100644\n--- a/drivers/watchdog/Kconfig\n+++ b/drivers/watchdog/Kconfig\n@@ -787,6 +787,16 @@ config UNIPHIER_WATCHDOG\n \t To compile this driver as a module, choose M here: the\n \t module will be called uniphier_wdt.\n \n+config RTD119X_WATCHDOG\n+\tbool \"Realtek RTD119x/RTD129x watchdog support\"\n+\tdepends on ARCH_REALTEK || COMPILE_TEST\n+\tdepends on OF\n+\tselect WATCHDOG_CORE\n+\tdefault ARCH_REALTEK\n+\thelp\n+\t Say Y here to include support for the watchdog timer in\n+\t Realtek RTD1295 SoCs.\n+\n # AVR32 Architecture\n \n config AT32AP700X_WDT\ndiff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile\nindex 56adf9fa67d0..63cb3ed8117d 100644\n--- a/drivers/watchdog/Makefile\n+++ b/drivers/watchdog/Makefile\n@@ -87,6 +87,7 @@ obj-$(CONFIG_ASPEED_WATCHDOG) += aspeed_wdt.o\n obj-$(CONFIG_ZX2967_WATCHDOG) += zx2967_wdt.o\n obj-$(CONFIG_STM32_WATCHDOG) += stm32_iwdg.o\n obj-$(CONFIG_UNIPHIER_WATCHDOG) += uniphier_wdt.o\n+obj-$(CONFIG_RTD119X_WATCHDOG) += rtd119x_wdt.o\n \n # AVR32 Architecture\n obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o\ndiff --git a/drivers/watchdog/rtd119x_wdt.c b/drivers/watchdog/rtd119x_wdt.c\nnew file mode 100644\nindex 000000000000..1bd2e86509a7\n--- /dev/null\n+++ b/drivers/watchdog/rtd119x_wdt.c\n@@ -0,0 +1,152 @@\n+/*\n+ * Realtek RTD129x watchdog\n+ *\n+ * Copyright (c) 2017 Andreas Färber\n+ *\n+ * SPDX-License-Identifier: GPL-2.0+\n+ */\n+\n+#include <linux/clk.h>\n+#include <linux/io.h>\n+#include <linux/module.h>\n+#include <linux/of.h>\n+#include <linux/of_address.h>\n+#include <linux/platform_device.h>\n+#include <linux/watchdog.h>\n+\n+#define RTD_TCWCR\t\t0x0\n+#define RTD_TCWTR\t\t0x4\n+#define RTD_TCWOV\t\t0xc\n+\n+#define RTD_TCWCR_WDEN_DISABLED\t\t0xa5\n+#define RTD_TCWCR_WDEN_ENABLED\t\t0xff\n+#define RTD_TCWCR_WDEN_MASK\t\t0xff\n+\n+#define RTD_TCWTR_WDCLR\t\t\tBIT(0)\n+\n+struct rtd119x_watchdog_device {\n+\tstruct watchdog_device wdt_dev;\n+\tvoid __iomem *base;\n+\tstruct clk *clk;\n+};\n+\n+static int rtd119x_wdt_start(struct watchdog_device *wdev)\n+{\n+\tstruct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);\n+\tu32 val;\n+\n+\tval = readl_relaxed(data->base + RTD_TCWCR);\n+\tval &= ~RTD_TCWCR_WDEN_MASK;\n+\tval |= RTD_TCWCR_WDEN_ENABLED;\n+\twritel(val, data->base + RTD_TCWCR);\n+\n+\treturn 0;\n+}\n+\n+static int rtd119x_wdt_stop(struct watchdog_device *wdev)\n+{\n+\tstruct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);\n+\tu32 val;\n+\n+\tval = readl_relaxed(data->base + RTD_TCWCR);\n+\tval &= ~RTD_TCWCR_WDEN_MASK;\n+\tval |= RTD_TCWCR_WDEN_DISABLED;\n+\twritel(val, data->base + RTD_TCWCR);\n+\n+\treturn 0;\n+}\n+\n+static int rtd119x_wdt_ping(struct watchdog_device *wdev)\n+{\n+\tstruct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);\n+\n+\twritel_relaxed(RTD_TCWTR_WDCLR, data->base + RTD_TCWTR);\n+\n+\treturn rtd119x_wdt_start(wdev);\n+}\n+\n+static int rtd119x_wdt_set_timeout(struct watchdog_device *wdev, unsigned int val)\n+{\n+\tstruct rtd119x_watchdog_device *data = watchdog_get_drvdata(wdev);\n+\n+\twritel(val * 27000000, data->base + RTD_TCWOV);\n+\n+\treturn 0;\n+}\n+\n+static const struct watchdog_ops rtd119x_wdt_ops = {\n+\t.owner = THIS_MODULE,\n+\t.start\t\t= rtd119x_wdt_start,\n+\t.stop\t\t= rtd119x_wdt_stop,\n+\t.ping\t\t= rtd119x_wdt_ping,\n+\t.set_timeout\t= rtd119x_wdt_set_timeout,\n+};\n+\n+static const struct watchdog_info rtd119x_wdt_info = {\n+\t.identity = \"rtd119x-wdt\",\n+\t.options = 0,\n+};\n+\n+static const struct of_device_id rtd_wdt_dt_ids[] = {\n+\t { .compatible = \"realtek,rtd1295-watchdog\" },\n+\t { }\n+};\n+\n+static int rtd_wdt_probe(struct platform_device *pdev)\n+{\n+\tstruct rtd119x_watchdog_device *data;\n+\tstruct resource *res;\n+\tint ret;\n+\n+\tdata = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);\n+\tif (!data)\n+\t\treturn -ENOMEM;\n+\n+\tres = platform_get_resource(pdev, IORESOURCE_MEM, 0);\n+\tdata->base = devm_ioremap_resource(&pdev->dev, res);\n+\tif (IS_ERR(data->base))\n+\t\treturn PTR_ERR(data->base);\n+\n+\tdata->clk = of_clk_get(pdev->dev.of_node, 0);\n+\tif (IS_ERR(data->clk))\n+\t\treturn PTR_ERR(data->clk);\n+\n+\tret = clk_prepare_enable(data->clk);\n+\tif (ret) {\n+\t\tclk_put(data->clk);\n+\t\treturn ret;\n+\t}\n+\n+\tdata->wdt_dev.info = &rtd119x_wdt_info;\n+\tdata->wdt_dev.ops = &rtd119x_wdt_ops;\n+\tdata->wdt_dev.timeout = 120;\n+\tdata->wdt_dev.max_timeout = 0xffffffff / clk_get_rate(data->clk);\n+\tdata->wdt_dev.min_timeout = 1;\n+\tdata->wdt_dev.parent = &pdev->dev;\n+\n+\twatchdog_stop_on_reboot(&data->wdt_dev);\n+\twatchdog_set_drvdata(&data->wdt_dev, data);\n+\tplatform_set_drvdata(pdev, data);\n+\n+\twritel_relaxed(RTD_TCWTR_WDCLR, data->base + RTD_TCWTR);\n+\trtd119x_wdt_set_timeout(&data->wdt_dev, data->wdt_dev.timeout);\n+\trtd119x_wdt_stop(&data->wdt_dev);\n+\n+\tret = devm_watchdog_register_device(&pdev->dev, &data->wdt_dev);\n+\tif (ret) {\n+\t\tclk_disable_unprepare(data->clk);\n+\t\tclk_put(data->clk);\n+\t\treturn ret;\n+\t}\n+\n+\treturn 0;\n+}\n+\n+static struct platform_driver rtd_wdt_driver = {\n+\t.probe = rtd_wdt_probe,\n+\t.driver = {\n+\t\t.name = \"rtd1295-watchdog\",\n+\t\t.of_match_table\t= rtd_wdt_dt_ids,\n+\t},\n+};\n+builtin_platform_driver(rtd_wdt_driver);\n", "prefixes": [ "2/3" ] }