1 // SPDX-License-Identifier: GPL-2.0-only
20 #include <clocksource/timer-davinci.h>
76 	return readl_relaxed(clockevent->base + reg);  in davinci_clockevent_read()
82 	writel_relaxed(val, clockevent->base + reg);  in davinci_clockevent_write()
92 	 * This function is only ever called if we're using both timer  in davinci_tim12_shutdown()
121 	davinci_tim12_shutdown(clockevent->base);  in davinci_clockevent_shutdown()
132 	davinci_tim12_set_oneshot(clockevent->base);  in davinci_clockevent_set_oneshot()
163 				 clockevent->cmp_off, curr_time + cycles);  in davinci_clockevent_set_next_event_cmp()
172 	if (!clockevent_state_oneshot(&clockevent->dev))  in davinci_timer_irq_timer()
173 		davinci_tim12_shutdown(clockevent->base);  in davinci_timer_irq_timer()
175 	clockevent->dev.event_handler(&clockevent->dev);  in davinci_timer_irq_timer()
192  * Standard use-case: we're using tim12 for clockevent and tim34 for
211  * Special use-case on da830: the DSP may use tim34. We're using tim12 for
232 	 * Reset both 32-bit timers, set no prescaler for timer 34, set the  in davinci_timer_init()
233 	 * timer to dual 32-bit unchained mode, unreset both 32-bit timers.  in davinci_timer_init()
252 		pr_err("Unable to prepare and enable the timer clock\n");  in davinci_timer_register()
256 	if (!request_mem_region(timer_cfg->reg.start,  in davinci_timer_register()
257 				resource_size(&timer_cfg->reg),  in davinci_timer_register()
258 				"davinci-timer")) {  in davinci_timer_register()
260 		rv = -EBUSY;  in davinci_timer_register()
264 	base = ioremap(timer_cfg->reg.start, resource_size(&timer_cfg->reg));  in davinci_timer_register()
267 		rv = -ENOMEM;  in davinci_timer_register()
276 		rv = -ENOMEM;  in davinci_timer_register()
280 	clockevent->dev.name = "tim12";  in davinci_timer_register()
281 	clockevent->dev.features = CLOCK_EVT_FEAT_ONESHOT;  in davinci_timer_register()
282 	clockevent->dev.cpumask = cpumask_of(0);  in davinci_timer_register()
283 	clockevent->base = base;  in davinci_timer_register()
285 	if (timer_cfg->cmp_off) {  in davinci_timer_register()
286 		clockevent->cmp_off = timer_cfg->cmp_off;  in davinci_timer_register()
287 		clockevent->dev.set_next_event =  in davinci_timer_register()
290 		clockevent->dev.set_next_event =  in davinci_timer_register()
292 		clockevent->dev.set_state_oneshot =  in davinci_timer_register()
294 		clockevent->dev.set_state_shutdown =  in davinci_timer_register()
298 	rv = request_irq(timer_cfg->irq[DAVINCI_TIMER_CLOCKEVENT_IRQ].start,  in davinci_timer_register()
313 	if (timer_cfg->cmp_off) {  in davinci_timer_register()
323 	clockevents_config_and_register(&clockevent->dev, tick_rate,  in davinci_timer_register()
339 	free_irq(timer_cfg->irq[DAVINCI_TIMER_CLOCKEVENT_IRQ].start,  in davinci_timer_register()
346 	release_mem_region(timer_cfg->reg.start,  in davinci_timer_register()
347 			   resource_size(&timer_cfg->reg));  in davinci_timer_register()
361 		pr_err("Unable to get the register range for timer\n");  in of_davinci_timer_register()
368 		pr_err("Unable to get the interrupts for timer\n");  in of_davinci_timer_register()
374 		pr_err("Unable to get the timer clock\n");  in of_davinci_timer_register()
384 TIMER_OF_DECLARE(davinci_timer, "ti,da830-timer", of_davinci_timer_register);