Lines Matching full:timer
48 static inline bool brcmstb_waketmr_is_pending(struct brcmstb_waketmr *timer) in brcmstb_waketmr_is_pending() argument
52 reg = readl_relaxed(timer->base + BRCMSTB_WKTMR_EVENT); in brcmstb_waketmr_is_pending()
56 static inline void brcmstb_waketmr_clear_alarm(struct brcmstb_waketmr *timer) in brcmstb_waketmr_clear_alarm() argument
60 if (timer->alarm_en && timer->alarm_irq) in brcmstb_waketmr_clear_alarm()
61 disable_irq(timer->alarm_irq); in brcmstb_waketmr_clear_alarm()
62 timer->alarm_en = false; in brcmstb_waketmr_clear_alarm()
63 reg = readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER); in brcmstb_waketmr_clear_alarm()
64 writel_relaxed(reg - 1, timer->base + BRCMSTB_WKTMR_ALARM); in brcmstb_waketmr_clear_alarm()
65 writel_relaxed(WKTMR_ALARM_EVENT, timer->base + BRCMSTB_WKTMR_EVENT); in brcmstb_waketmr_clear_alarm()
66 (void)readl_relaxed(timer->base + BRCMSTB_WKTMR_EVENT); in brcmstb_waketmr_clear_alarm()
69 static void brcmstb_waketmr_set_alarm(struct brcmstb_waketmr *timer, in brcmstb_waketmr_set_alarm() argument
74 brcmstb_waketmr_clear_alarm(timer); in brcmstb_waketmr_set_alarm()
77 writel_relaxed(timer->rate, timer->base + BRCMSTB_WKTMR_PRESCALER); in brcmstb_waketmr_set_alarm()
79 writel_relaxed(secs, timer->base + BRCMSTB_WKTMR_ALARM); in brcmstb_waketmr_set_alarm()
80 now = readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER); in brcmstb_waketmr_set_alarm()
83 !brcmstb_waketmr_is_pending(timer)) { in brcmstb_waketmr_set_alarm()
85 writel_relaxed(secs, timer->base + BRCMSTB_WKTMR_ALARM); in brcmstb_waketmr_set_alarm()
86 now = readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER); in brcmstb_waketmr_set_alarm()
92 struct brcmstb_waketmr *timer = data; in brcmstb_waketmr_irq() local
94 if (!timer->alarm_irq) in brcmstb_waketmr_irq()
95 pm_wakeup_event(timer->dev, 0); in brcmstb_waketmr_irq()
101 struct brcmstb_waketmr *timer = data; in brcmstb_alarm_irq() local
104 if (!brcmstb_waketmr_is_pending(timer)) in brcmstb_alarm_irq()
107 if (timer->alarm_en) { in brcmstb_alarm_irq()
108 if (!device_may_wakeup(timer->dev)) in brcmstb_alarm_irq()
110 timer->base + BRCMSTB_WKTMR_EVENT); in brcmstb_alarm_irq()
111 rtc_update_irq(timer->rtc, 1, RTC_IRQF | RTC_AF); in brcmstb_alarm_irq()
122 static void wktmr_read(struct brcmstb_waketmr *timer, in wktmr_read() argument
128 t->sec = readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER); in wktmr_read()
129 tmp = readl_relaxed(timer->base + BRCMSTB_WKTMR_PRESCALER_VAL); in wktmr_read()
130 } while (tmp >= timer->rate); in wktmr_read()
132 t->pre = timer->rate - tmp; in wktmr_read()
135 static int brcmstb_waketmr_prepare_suspend(struct brcmstb_waketmr *timer) in brcmstb_waketmr_prepare_suspend() argument
137 struct device *dev = timer->dev; in brcmstb_waketmr_prepare_suspend()
141 ret = enable_irq_wake(timer->wake_irq); in brcmstb_waketmr_prepare_suspend()
146 if (timer->alarm_en && timer->alarm_irq) { in brcmstb_waketmr_prepare_suspend()
147 ret = enable_irq_wake(timer->alarm_irq); in brcmstb_waketmr_prepare_suspend()
150 disable_irq_wake(timer->wake_irq); in brcmstb_waketmr_prepare_suspend()
159 /* If enabled as a wakeup-source, arm the timer when powering off */
163 struct brcmstb_waketmr *timer; in brcmstb_waketmr_reboot() local
165 timer = container_of(nb, struct brcmstb_waketmr, reboot_notifier); in brcmstb_waketmr_reboot()
167 /* Set timer for cold boot */ in brcmstb_waketmr_reboot()
169 brcmstb_waketmr_prepare_suspend(timer); in brcmstb_waketmr_reboot()
177 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_gettime() local
180 wktmr_read(timer, &now); in brcmstb_waketmr_gettime()
190 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_settime() local
195 writel_relaxed(sec, timer->base + BRCMSTB_WKTMR_COUNTER); in brcmstb_waketmr_settime()
203 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_getalarm() local
205 alarm->enabled = timer->alarm_en; in brcmstb_waketmr_getalarm()
206 rtc_time64_to_tm(timer->rtc_alarm, &alarm->time); in brcmstb_waketmr_getalarm()
208 alarm->pending = brcmstb_waketmr_is_pending(timer); in brcmstb_waketmr_getalarm()
216 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_alarm_enable() local
218 if (enabled && !timer->alarm_en) { in brcmstb_waketmr_alarm_enable()
219 if ((int)(readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER) - in brcmstb_waketmr_alarm_enable()
220 readl_relaxed(timer->base + BRCMSTB_WKTMR_ALARM)) >= 0 && in brcmstb_waketmr_alarm_enable()
221 !brcmstb_waketmr_is_pending(timer)) in brcmstb_waketmr_alarm_enable()
223 timer->alarm_en = true; in brcmstb_waketmr_alarm_enable()
224 if (timer->alarm_irq) in brcmstb_waketmr_alarm_enable()
225 enable_irq(timer->alarm_irq); in brcmstb_waketmr_alarm_enable()
226 } else if (!enabled && timer->alarm_en) { in brcmstb_waketmr_alarm_enable()
227 if (timer->alarm_irq) in brcmstb_waketmr_alarm_enable()
228 disable_irq(timer->alarm_irq); in brcmstb_waketmr_alarm_enable()
229 timer->alarm_en = false; in brcmstb_waketmr_alarm_enable()
238 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_setalarm() local
240 timer->rtc_alarm = rtc_tm_to_time64(&alarm->time); in brcmstb_waketmr_setalarm()
242 brcmstb_waketmr_set_alarm(timer, timer->rtc_alarm); in brcmstb_waketmr_setalarm()
258 struct brcmstb_waketmr *timer; in brcmstb_waketmr_probe() local
261 timer = devm_kzalloc(dev, sizeof(*timer), GFP_KERNEL); in brcmstb_waketmr_probe()
262 if (!timer) in brcmstb_waketmr_probe()
265 platform_set_drvdata(pdev, timer); in brcmstb_waketmr_probe()
266 timer->dev = dev; in brcmstb_waketmr_probe()
268 timer->base = devm_platform_ioremap_resource(pdev, 0); in brcmstb_waketmr_probe()
269 if (IS_ERR(timer->base)) in brcmstb_waketmr_probe()
270 return PTR_ERR(timer->base); in brcmstb_waketmr_probe()
272 timer->rtc = devm_rtc_allocate_device(dev); in brcmstb_waketmr_probe()
273 if (IS_ERR(timer->rtc)) in brcmstb_waketmr_probe()
274 return PTR_ERR(timer->rtc); in brcmstb_waketmr_probe()
285 timer->wake_irq = (unsigned int)ret; in brcmstb_waketmr_probe()
287 timer->clk = devm_clk_get(dev, NULL); in brcmstb_waketmr_probe()
288 if (!IS_ERR(timer->clk)) { in brcmstb_waketmr_probe()
289 ret = clk_prepare_enable(timer->clk); in brcmstb_waketmr_probe()
292 timer->rate = clk_get_rate(timer->clk); in brcmstb_waketmr_probe()
293 if (!timer->rate) in brcmstb_waketmr_probe()
294 timer->rate = BRCMSTB_WKTMR_DEFAULT_FREQ; in brcmstb_waketmr_probe()
296 timer->rate = BRCMSTB_WKTMR_DEFAULT_FREQ; in brcmstb_waketmr_probe()
297 timer->clk = NULL; in brcmstb_waketmr_probe()
300 ret = devm_request_irq(dev, timer->wake_irq, brcmstb_waketmr_irq, 0, in brcmstb_waketmr_probe()
301 "brcmstb-waketimer", timer); in brcmstb_waketmr_probe()
305 brcmstb_waketmr_clear_alarm(timer); in brcmstb_waketmr_probe()
310 timer->alarm_irq = (unsigned int)ret; in brcmstb_waketmr_probe()
311 ret = devm_request_irq(dev, timer->alarm_irq, brcmstb_alarm_irq, in brcmstb_waketmr_probe()
313 timer); in brcmstb_waketmr_probe()
315 timer->alarm_irq = 0; in brcmstb_waketmr_probe()
318 timer->reboot_notifier.notifier_call = brcmstb_waketmr_reboot; in brcmstb_waketmr_probe()
319 register_reboot_notifier(&timer->reboot_notifier); in brcmstb_waketmr_probe()
321 timer->rtc->ops = &brcmstb_waketmr_ops; in brcmstb_waketmr_probe()
322 timer->rtc->range_max = U32_MAX; in brcmstb_waketmr_probe()
324 ret = devm_rtc_register_device(timer->rtc); in brcmstb_waketmr_probe()
331 unregister_reboot_notifier(&timer->reboot_notifier); in brcmstb_waketmr_probe()
334 clk_disable_unprepare(timer->clk); in brcmstb_waketmr_probe()
341 struct brcmstb_waketmr *timer = dev_get_drvdata(&pdev->dev); in brcmstb_waketmr_remove() local
343 unregister_reboot_notifier(&timer->reboot_notifier); in brcmstb_waketmr_remove()
344 clk_disable_unprepare(timer->clk); in brcmstb_waketmr_remove()
350 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_suspend() local
352 return brcmstb_waketmr_prepare_suspend(timer); in brcmstb_waketmr_suspend()
357 struct brcmstb_waketmr *timer = dev_get_drvdata(dev); in brcmstb_waketmr_resume() local
363 ret = disable_irq_wake(timer->wake_irq); in brcmstb_waketmr_resume()
364 if (timer->alarm_en && timer->alarm_irq) in brcmstb_waketmr_resume()
365 disable_irq_wake(timer->alarm_irq); in brcmstb_waketmr_resume()
367 brcmstb_waketmr_clear_alarm(timer); in brcmstb_waketmr_resume()
396 MODULE_DESCRIPTION("Wake-up timer driver for STB chips");