44 static inline void brcmstb_waketmr_clear_alarm(struct brcmstb_waketmr *timer)  in brcmstb_waketmr_clear_alarm()  argument
46 	writel_relaxed(1, timer->base + BRCMSTB_WKTMR_EVENT);  in brcmstb_waketmr_clear_alarm()
47 	(void)readl_relaxed(timer->base + BRCMSTB_WKTMR_EVENT);  in brcmstb_waketmr_clear_alarm()
50 static void brcmstb_waketmr_set_alarm(struct brcmstb_waketmr *timer,  in brcmstb_waketmr_set_alarm()  argument
53 	brcmstb_waketmr_clear_alarm(timer);  in brcmstb_waketmr_set_alarm()
56 	writel_relaxed(timer->rate, timer->base + BRCMSTB_WKTMR_PRESCALER);  in brcmstb_waketmr_set_alarm()
58 	writel_relaxed(secs + 1, timer->base + BRCMSTB_WKTMR_ALARM);  in brcmstb_waketmr_set_alarm()
63 	struct brcmstb_waketmr *timer = data;  in brcmstb_waketmr_irq()  local
65 	pm_wakeup_event(timer->dev, 0);  in brcmstb_waketmr_irq()
75 static void wktmr_read(struct brcmstb_waketmr *timer,  in wktmr_read()  argument
81 		t->sec = readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER);  in wktmr_read()
82 		tmp = readl_relaxed(timer->base + BRCMSTB_WKTMR_PRESCALER_VAL);  in wktmr_read()
83 	} while (tmp >= timer->rate);  in wktmr_read()
85 	t->pre = timer->rate - tmp;  in wktmr_read()
88 static int brcmstb_waketmr_prepare_suspend(struct brcmstb_waketmr *timer)  in brcmstb_waketmr_prepare_suspend()  argument
90 	struct device *dev = timer->dev;  in brcmstb_waketmr_prepare_suspend()
94 		ret = enable_irq_wake(timer->irq);  in brcmstb_waketmr_prepare_suspend()
108 	struct brcmstb_waketmr *timer;  in brcmstb_waketmr_reboot()  local
110 	timer = container_of(nb, struct brcmstb_waketmr, reboot_notifier);  in brcmstb_waketmr_reboot()
114 		brcmstb_waketmr_prepare_suspend(timer);  in brcmstb_waketmr_reboot()
122 	struct brcmstb_waketmr *timer = dev_get_drvdata(dev);  in brcmstb_waketmr_gettime()  local
125 	wktmr_read(timer, &now);  in brcmstb_waketmr_gettime()
135 	struct brcmstb_waketmr *timer = dev_get_drvdata(dev);  in brcmstb_waketmr_settime()  local
140 	writel_relaxed(sec, timer->base + BRCMSTB_WKTMR_COUNTER);  in brcmstb_waketmr_settime()
148 	struct brcmstb_waketmr *timer = dev_get_drvdata(dev);  in brcmstb_waketmr_getalarm()  local
152 	sec = readl_relaxed(timer->base + BRCMSTB_WKTMR_ALARM);  in brcmstb_waketmr_getalarm()
159 	reg = readl_relaxed(timer->base + BRCMSTB_WKTMR_EVENT);  in brcmstb_waketmr_getalarm()
168 	struct brcmstb_waketmr *timer = dev_get_drvdata(dev);  in brcmstb_waketmr_setalarm()  local
176 	brcmstb_waketmr_set_alarm(timer, sec);  in brcmstb_waketmr_setalarm()
202 	struct brcmstb_waketmr *timer;  in brcmstb_waketmr_probe()  local
205 	timer = devm_kzalloc(dev, sizeof(*timer), GFP_KERNEL);  in brcmstb_waketmr_probe()
206 	if (!timer)  in brcmstb_waketmr_probe()
209 	platform_set_drvdata(pdev, timer);  in brcmstb_waketmr_probe()
210 	timer->dev = dev;  in brcmstb_waketmr_probe()
212 	timer->base = devm_platform_ioremap_resource(pdev, 0);  in brcmstb_waketmr_probe()
213 	if (IS_ERR(timer->base))  in brcmstb_waketmr_probe()
214 		return PTR_ERR(timer->base);  in brcmstb_waketmr_probe()
216 	timer->rtc = devm_rtc_allocate_device(dev);  in brcmstb_waketmr_probe()
217 	if (IS_ERR(timer->rtc))  in brcmstb_waketmr_probe()
218 		return PTR_ERR(timer->rtc);  in brcmstb_waketmr_probe()
227 	timer->irq = platform_get_irq(pdev, 0);  in brcmstb_waketmr_probe()
228 	if (timer->irq < 0)  in brcmstb_waketmr_probe()
231 	timer->clk = devm_clk_get(dev, NULL);  in brcmstb_waketmr_probe()
232 	if (!IS_ERR(timer->clk)) {  in brcmstb_waketmr_probe()
233 		ret = clk_prepare_enable(timer->clk);  in brcmstb_waketmr_probe()
236 		timer->rate = clk_get_rate(timer->clk);  in brcmstb_waketmr_probe()
237 		if (!timer->rate)  in brcmstb_waketmr_probe()
238 			timer->rate = BRCMSTB_WKTMR_DEFAULT_FREQ;  in brcmstb_waketmr_probe()
240 		timer->rate = BRCMSTB_WKTMR_DEFAULT_FREQ;  in brcmstb_waketmr_probe()
241 		timer->clk = NULL;  in brcmstb_waketmr_probe()
244 	ret = devm_request_irq(dev, timer->irq, brcmstb_waketmr_irq, 0,  in brcmstb_waketmr_probe()
245 			       "brcmstb-waketimer", timer);  in brcmstb_waketmr_probe()
249 	timer->reboot_notifier.notifier_call = brcmstb_waketmr_reboot;  in brcmstb_waketmr_probe()
250 	register_reboot_notifier(&timer->reboot_notifier);  in brcmstb_waketmr_probe()
252 	timer->rtc->ops = &brcmstb_waketmr_ops;  in brcmstb_waketmr_probe()
253 	timer->rtc->range_max = U32_MAX;  in brcmstb_waketmr_probe()
255 	ret = devm_rtc_register_device(timer->rtc);  in brcmstb_waketmr_probe()
259 	dev_info(dev, "registered, with irq %d\n", timer->irq);  in brcmstb_waketmr_probe()
264 	unregister_reboot_notifier(&timer->reboot_notifier);  in brcmstb_waketmr_probe()
267 	clk_disable_unprepare(timer->clk);  in brcmstb_waketmr_probe()
274 	struct brcmstb_waketmr *timer = dev_get_drvdata(&pdev->dev);  in brcmstb_waketmr_remove()  local
276 	unregister_reboot_notifier(&timer->reboot_notifier);  in brcmstb_waketmr_remove()
277 	clk_disable_unprepare(timer->clk);  in brcmstb_waketmr_remove()
285 	struct brcmstb_waketmr *timer = dev_get_drvdata(dev);  in brcmstb_waketmr_suspend()  local
287 	return brcmstb_waketmr_prepare_suspend(timer);  in brcmstb_waketmr_suspend()
292 	struct brcmstb_waketmr *timer = dev_get_drvdata(dev);  in brcmstb_waketmr_resume()  local
298 	ret = disable_irq_wake(timer->irq);  in brcmstb_waketmr_resume()
300 	brcmstb_waketmr_clear_alarm(timer);  in brcmstb_waketmr_resume()