1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/mfd/stpmic1.h>
31 	struct stpmic1 *pmic;
37 	struct stpmic1_wdt *wdt = watchdog_get_drvdata(wdd);  in pmic_wdt_start()  local
39 	return regmap_update_bits(wdt->pmic->regmap,  in pmic_wdt_start()
45 	struct stpmic1_wdt *wdt = watchdog_get_drvdata(wdd);  in pmic_wdt_stop()  local
47 	return regmap_update_bits(wdt->pmic->regmap,  in pmic_wdt_stop()
53 	struct stpmic1_wdt *wdt = watchdog_get_drvdata(wdd);  in pmic_wdt_ping()  local
55 	return regmap_update_bits(wdt->pmic->regmap,  in pmic_wdt_ping()
62 	struct stpmic1_wdt *wdt = watchdog_get_drvdata(wdd);  in pmic_wdt_set_timeout()  local
64 	wdd->timeout = timeout;  in pmic_wdt_set_timeout()
66 	return regmap_write(wdt->pmic->regmap, WCHDG_TIMER_CR, timeout - 1);  in pmic_wdt_set_timeout()
71 	.identity = "STPMIC1 PMIC Watchdog",
84 	struct device *dev = &pdev->dev;  in pmic_wdt_probe()
86 	struct stpmic1 *pmic;  in pmic_wdt_probe()
87 	struct stpmic1_wdt *wdt;  in pmic_wdt_probe()  local
89 	if (!dev->parent)  in pmic_wdt_probe()
90 		return -EINVAL;  in pmic_wdt_probe()
92 	pmic = dev_get_drvdata(dev->parent);  in pmic_wdt_probe()
94 		return -EINVAL;  in pmic_wdt_probe()
96 	wdt = devm_kzalloc(dev, sizeof(struct stpmic1_wdt), GFP_KERNEL);  in pmic_wdt_probe()
97 	if (!wdt)  in pmic_wdt_probe()
98 		return -ENOMEM;  in pmic_wdt_probe()
100 	wdt->pmic = pmic;  in pmic_wdt_probe()
102 	wdt->wdtdev.info = &pmic_watchdog_info;  in pmic_wdt_probe()
103 	wdt->wdtdev.ops = &pmic_watchdog_ops;  in pmic_wdt_probe()
104 	wdt->wdtdev.min_timeout = PMIC_WDT_MIN_TIMEOUT;  in pmic_wdt_probe()
105 	wdt->wdtdev.max_timeout = PMIC_WDT_MAX_TIMEOUT;  in pmic_wdt_probe()
106 	wdt->wdtdev.parent = dev;  in pmic_wdt_probe()
108 	wdt->wdtdev.timeout = PMIC_WDT_DEFAULT_TIMEOUT;  in pmic_wdt_probe()
109 	watchdog_init_timeout(&wdt->wdtdev, 0, dev);  in pmic_wdt_probe()
111 	watchdog_set_nowayout(&wdt->wdtdev, nowayout);  in pmic_wdt_probe()
112 	watchdog_set_drvdata(&wdt->wdtdev, wdt);  in pmic_wdt_probe()
114 	ret = devm_watchdog_register_device(dev, &wdt->wdtdev);  in pmic_wdt_probe()
118 	dev_dbg(wdt->pmic->dev, "PMIC Watchdog driver probed\n");  in pmic_wdt_probe()
123 	{ .compatible = "st,stpmic1-wdt" },
132 		.name = "stpmic1-wdt",
138 MODULE_DESCRIPTION("Watchdog driver for STPMIC1 device");