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[35.220.130.94]) by smtp.gmail.com with ESMTPSA id a13-20020a170902ee8d00b0019f11a68c42sm24444851pld.297.2023.03.30.04.21.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Mar 2023 04:21:08 -0700 (PDT) From: Keguang Zhang To: linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Wim Van Sebroeck , Guenter Roeck , Thomas Bogendoerfer , Yang Ling , Keguang Zhang Subject: [PATCH v2 2/2] watchdog: loongson1_wdt: Implement restart handler Date: Thu, 30 Mar 2023 19:20:51 +0800 Message-Id: <20230330112051.551648-3-keguang.zhang@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230330112051.551648-1-keguang.zhang@gmail.com> References: <20230330112051.551648-1-keguang.zhang@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Implement restart handler for the Loongson-1 watchdog driver and define the watchdog registers instead of including the legacy header. Signed-off-by: Keguang Zhang Reviewed-by: Guenter Roeck --- V1 -> V2: None --- drivers/watchdog/loongson1_wdt.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c index bb3d075c0633..a0b6fe62e516 100644 --- a/drivers/watchdog/loongson1_wdt.c +++ b/drivers/watchdog/loongson1_wdt.c @@ -7,7 +7,11 @@ #include #include #include -#include + +/* Loongson 1 Watchdog Register Definitions */ +#define WDT_EN 0x0 +#define WDT_TIMER 0x4 +#define WDT_SET 0x8 #define DEFAULT_HEARTBEAT 30 @@ -66,6 +70,18 @@ static int ls1x_wdt_stop(struct watchdog_device *wdt_dev) return 0; } +static int ls1x_wdt_restart(struct watchdog_device *wdt_dev, + unsigned long action, void *data) +{ + struct ls1x_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); + + writel(0x1, drvdata->base + WDT_EN); + writel(0x1, drvdata->base + WDT_TIMER); + writel(0x1, drvdata->base + WDT_SET); + + return 0; +} + static const struct watchdog_info ls1x_wdt_info = { .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, .identity = "Loongson1 Watchdog", @@ -77,6 +93,7 @@ static const struct watchdog_ops ls1x_wdt_ops = { .stop = ls1x_wdt_stop, .ping = ls1x_wdt_ping, .set_timeout = ls1x_wdt_set_timeout, + .restart = ls1x_wdt_restart, }; static void ls1x_clk_disable_unprepare(void *data)