[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/watchdog/ts72xx_wdt.c b/src/kernel/linux/v4.14/drivers/watchdog/ts72xx_wdt.c
new file mode 100644
index 0000000..811e43c
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/watchdog/ts72xx_wdt.c
@@ -0,0 +1,179 @@
+/*
+ * Watchdog driver for Technologic Systems TS-72xx based SBCs
+ * (TS-7200, TS-7250 and TS-7260). These boards have external
+ * glue logic CPLD chip, which includes programmable watchdog
+ * timer.
+ *
+ * Copyright (c) 2009 Mika Westerberg <mika.westerberg@iki.fi>
+ *
+ * This driver is based on ep93xx_wdt and wm831x_wdt drivers.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/watchdog.h>
+#include <linux/io.h>
+
+#define TS72XX_WDT_DEFAULT_TIMEOUT 30
+
+static int timeout;
+module_param(timeout, int, 0);
+MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds.");
+
+static bool nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
+
+/* priv->control_reg */
+#define TS72XX_WDT_CTRL_DISABLE 0x00
+#define TS72XX_WDT_CTRL_250MS 0x01
+#define TS72XX_WDT_CTRL_500MS 0x02
+#define TS72XX_WDT_CTRL_1SEC 0x03
+#define TS72XX_WDT_CTRL_RESERVED 0x04
+#define TS72XX_WDT_CTRL_2SEC 0x05
+#define TS72XX_WDT_CTRL_4SEC 0x06
+#define TS72XX_WDT_CTRL_8SEC 0x07
+
+/* priv->feed_reg */
+#define TS72XX_WDT_FEED_VAL 0x05
+
+struct ts72xx_wdt_priv {
+ void __iomem *control_reg;
+ void __iomem *feed_reg;
+ struct watchdog_device wdd;
+ unsigned char regval;
+};
+
+static int ts72xx_wdt_start(struct watchdog_device *wdd)
+{
+ struct ts72xx_wdt_priv *priv = watchdog_get_drvdata(wdd);
+
+ writeb(TS72XX_WDT_FEED_VAL, priv->feed_reg);
+ writeb(priv->regval, priv->control_reg);
+
+ return 0;
+}
+
+static int ts72xx_wdt_stop(struct watchdog_device *wdd)
+{
+ struct ts72xx_wdt_priv *priv = watchdog_get_drvdata(wdd);
+
+ writeb(TS72XX_WDT_FEED_VAL, priv->feed_reg);
+ writeb(TS72XX_WDT_CTRL_DISABLE, priv->control_reg);
+
+ return 0;
+}
+
+static int ts72xx_wdt_ping(struct watchdog_device *wdd)
+{
+ struct ts72xx_wdt_priv *priv = watchdog_get_drvdata(wdd);
+
+ writeb(TS72XX_WDT_FEED_VAL, priv->feed_reg);
+
+ return 0;
+}
+
+static int ts72xx_wdt_settimeout(struct watchdog_device *wdd, unsigned int to)
+{
+ struct ts72xx_wdt_priv *priv = watchdog_get_drvdata(wdd);
+
+ if (to == 1) {
+ priv->regval = TS72XX_WDT_CTRL_1SEC;
+ } else if (to == 2) {
+ priv->regval = TS72XX_WDT_CTRL_2SEC;
+ } else if (to <= 4) {
+ priv->regval = TS72XX_WDT_CTRL_4SEC;
+ to = 4;
+ } else {
+ priv->regval = TS72XX_WDT_CTRL_8SEC;
+ if (to <= 8)
+ to = 8;
+ }
+
+ wdd->timeout = to;
+
+ if (watchdog_active(wdd)) {
+ ts72xx_wdt_stop(wdd);
+ ts72xx_wdt_start(wdd);
+ }
+
+ return 0;
+}
+
+static const struct watchdog_info ts72xx_wdt_ident = {
+ .options = WDIOF_KEEPALIVEPING |
+ WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE,
+ .firmware_version = 1,
+ .identity = "TS-72XX WDT",
+};
+
+static const struct watchdog_ops ts72xx_wdt_ops = {
+ .owner = THIS_MODULE,
+ .start = ts72xx_wdt_start,
+ .stop = ts72xx_wdt_stop,
+ .ping = ts72xx_wdt_ping,
+ .set_timeout = ts72xx_wdt_settimeout,
+};
+
+static int ts72xx_wdt_probe(struct platform_device *pdev)
+{
+ struct ts72xx_wdt_priv *priv;
+ struct watchdog_device *wdd;
+ struct resource *res;
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->control_reg = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->control_reg))
+ return PTR_ERR(priv->control_reg);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ priv->feed_reg = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->feed_reg))
+ return PTR_ERR(priv->feed_reg);
+
+ wdd = &priv->wdd;
+ wdd->info = &ts72xx_wdt_ident;
+ wdd->ops = &ts72xx_wdt_ops;
+ wdd->min_timeout = 1;
+ wdd->max_hw_heartbeat_ms = 8000;
+ wdd->parent = &pdev->dev;
+
+ watchdog_set_nowayout(wdd, nowayout);
+
+ wdd->timeout = TS72XX_WDT_DEFAULT_TIMEOUT;
+ watchdog_init_timeout(wdd, timeout, &pdev->dev);
+
+ watchdog_set_drvdata(wdd, priv);
+
+ ret = devm_watchdog_register_device(&pdev->dev, wdd);
+ if (ret)
+ return ret;
+
+ dev_info(&pdev->dev, "TS-72xx Watchdog driver\n");
+
+ return 0;
+}
+
+static struct platform_driver ts72xx_wdt_driver = {
+ .probe = ts72xx_wdt_probe,
+ .driver = {
+ .name = "ts72xx-wdt",
+ },
+};
+
+module_platform_driver(ts72xx_wdt_driver);
+
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
+MODULE_DESCRIPTION("TS-72xx SBC Watchdog");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ts72xx-wdt");