drivers/watchdog/gxp-wdt.c

29 static void gxp_wdt_enable_reload(struct gxp_wdt *drvdata)
33 	val = readb(drvdata->base + GXP_WDT_CTRL_OFS);
35 	writeb(val, drvdata->base + GXP_WDT_CTRL_OFS);
40 	struct gxp_wdt *drvdata = watchdog_get_drvdata(wdd);
42 	writew(SECS_TO_WDOG_TICKS(wdd->timeout), drvdata->base + GXP_WDT_CNT_OFS);
43 	gxp_wdt_enable_reload(drvdata);
49 	struct gxp_wdt *drvdata = watchdog_get_drvdata(wdd);
52 	val = readb_relaxed(drvdata->base + GXP_WDT_CTRL_OFS);
54 	writeb(val, drvdata->base + GXP_WDT_CTRL_OFS);
61 	struct gxp_wdt *drvdata = watchdog_get_drvdata(wdd);
66 	writew(actual, drvdata->base + GXP_WDT_CNT_OFS);
73 	struct gxp_wdt *drvdata = watchdog_get_drvdata(wdd);
74 	u32 val = readw(drvdata->base + GXP_WDT_CNT_OFS);
81 	struct gxp_wdt *drvdata = watchdog_get_drvdata(wdd);
83 	gxp_wdt_enable_reload(drvdata);
90 	struct gxp_wdt *drvdata = watchdog_get_drvdata(wdd);
92 	writew(1, drvdata->base + GXP_WDT_CNT_OFS);
93 	gxp_wdt_enable_reload(drvdata);
116 	struct gxp_wdt *drvdata;
120 	drvdata = devm_kzalloc(dev, sizeof(struct gxp_wdt), GFP_KERNEL);
121 	if (!drvdata)
134 	drvdata->base = (void __iomem *)dev->platform_data;
136 	drvdata->wdd.info = &gxp_wdt_info;
137 	drvdata->wdd.ops = &gxp_wdt_ops;
138 	drvdata->wdd.max_hw_heartbeat_ms = WDT_MAX_TIMEOUT_MS;
139 	drvdata->wdd.parent = dev;
140 	drvdata->wdd.timeout = WDT_DEFAULT_TIMEOUT;
142 	watchdog_set_drvdata(&drvdata->wdd, drvdata);
143 	watchdog_set_nowayout(&drvdata->wdd, WATCHDOG_NOWAYOUT);
145 	val = readb(drvdata->base + GXP_WDT_CTRL_OFS);
148 		set_bit(WDOG_HW_RUNNING, &drvdata->wdd.status);
150 	watchdog_set_restart_priority(&drvdata->wdd, 128);
152 	watchdog_stop_on_reboot(&drvdata->wdd);
153 	err = devm_watchdog_register_device(dev, &drvdata->wdd);