drivers/watchdog/da9063_wdt.c

19 #include <linux/mfd/da9063/registers.h>
20 #include <linux/mfd/da9063/core.h>
56 static unsigned int da9063_wdt_read_timeout(struct da9063 *da9063)
60 	regmap_read(da9063->regmap, DA9063_REG_CONTROL_D, &val);
65 static int da9063_wdt_disable_timer(struct da9063 *da9063)
67 	return regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
73 da9063_wdt_update_timeout(struct da9063 *da9063, unsigned int timeout)
86 	ret = da9063_wdt_disable_timer(da9063);
93 	return regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
99 	struct da9063 *da9063 = watchdog_get_drvdata(wdd);
102 	ret = da9063_wdt_update_timeout(da9063, wdd->timeout);
104 		dev_err(da9063->dev, "Watchdog failed to start (err = %d)\n",
112 	struct da9063 *da9063 = watchdog_get_drvdata(wdd);
115 	ret = da9063_wdt_disable_timer(da9063);
117 		dev_alert(da9063->dev, "Watchdog failed to stop (err = %d)\n",
125 	struct da9063 *da9063 = watchdog_get_drvdata(wdd);
135 	ret = regmap_write(da9063->regmap, DA9063_REG_CONTROL_F,
138 		dev_alert(da9063->dev, "Failed to ping the watchdog (err = %d)\n",
147 	struct da9063 *da9063 = watchdog_get_drvdata(wdd);
161 		ret = da9063_wdt_update_timeout(da9063, timeout);
164 		dev_err(da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
175 	struct da9063 *da9063 = watchdog_get_drvdata(wdd);
176 	struct i2c_client *client = to_i2c_client(da9063->dev);
192 		dev_alert(da9063->dev, "Failed to shutdown (err = %d)\n",
218 	struct da9063 *da9063;
225 	da9063 = dev_get_drvdata(dev->parent);
226 	if (!da9063)
244 	watchdog_set_drvdata(wdd, da9063);
250 	timeout = da9063_wdt_read_timeout(da9063);
260 		da9063_wdt_update_timeout(da9063, wdd->timeout);