49 static inline u32 apbt_readl(struct dw_apb_timer *timer, unsigned long offs)  in apbt_readl()  argument
51 	return readl(timer->base + offs);  in apbt_readl()
54 static inline void apbt_writel(struct dw_apb_timer *timer, u32 val,  in apbt_writel()  argument
57 	writel(val, timer->base + offs);  in apbt_writel()
60 static inline u32 apbt_readl_relaxed(struct dw_apb_timer *timer, unsigned long offs)  in apbt_readl_relaxed()  argument
62 	return readl_relaxed(timer->base + offs);  in apbt_readl_relaxed()
65 static inline void apbt_writel_relaxed(struct dw_apb_timer *timer, u32 val,  in apbt_writel_relaxed()  argument
68 	writel_relaxed(val, timer->base + offs);  in apbt_writel_relaxed()
71 static void apbt_disable_int(struct dw_apb_timer *timer)  in apbt_disable_int()  argument
73 	u32 ctrl = apbt_readl(timer, APBTMR_N_CONTROL);  in apbt_disable_int()
76 	apbt_writel(timer, ctrl, APBTMR_N_CONTROL);  in apbt_disable_int()
86 	disable_irq(dw_ced->timer.irq);  in dw_apb_clockevent_pause()
87 	apbt_disable_int(&dw_ced->timer);  in dw_apb_clockevent_pause()
90 static void apbt_eoi(struct dw_apb_timer *timer)  in apbt_eoi()  argument
92 	apbt_readl_relaxed(timer, APBTMR_N_EOI);  in apbt_eoi()
101 		pr_info("Spurious APBT timer interrupt %d\n", irq);  in dw_apb_clockevent_irq()
106 		dw_ced->eoi(&dw_ced->timer);  in dw_apb_clockevent_irq()
112 static void apbt_enable_int(struct dw_apb_timer *timer)  in apbt_enable_int()  argument
114 	u32 ctrl = apbt_readl(timer, APBTMR_N_CONTROL);  in apbt_enable_int()
116 	apbt_readl(timer, APBTMR_N_EOI);  in apbt_enable_int()
118 	apbt_writel(timer, ctrl, APBTMR_N_CONTROL);  in apbt_enable_int()
129 	ctrl = apbt_readl(&dw_ced->timer, APBTMR_N_CONTROL);  in apbt_shutdown()
131 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_shutdown()
143 	ctrl = apbt_readl(&dw_ced->timer, APBTMR_N_CONTROL);  in apbt_set_oneshot()
145 	 * set free running mode, this mode will let timer reload max  in apbt_set_oneshot()
152 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_set_oneshot()
154 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_set_oneshot()
160 	apbt_writel(&dw_ced->timer, ~0, APBTMR_N_LOAD_COUNT);  in apbt_set_oneshot()
163 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_set_oneshot()
170 	unsigned long period = DIV_ROUND_UP(dw_ced->timer.freq, HZ);  in apbt_set_periodic()
176 	ctrl = apbt_readl(&dw_ced->timer, APBTMR_N_CONTROL);  in apbt_set_periodic()
178 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_set_periodic()
180 	 * DW APB p. 46, have to disable timer before load counter,  in apbt_set_periodic()
184 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_set_periodic()
187 	apbt_writel(&dw_ced->timer, period, APBTMR_N_LOAD_COUNT);  in apbt_set_periodic()
189 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_set_periodic()
200 	apbt_enable_int(&dw_ced->timer);  in apbt_resume()
210 	/* Disable timer */  in apbt_next_event()
211 	ctrl = apbt_readl_relaxed(&dw_ced->timer, APBTMR_N_CONTROL);  in apbt_next_event()
213 	apbt_writel_relaxed(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_next_event()
215 	apbt_writel_relaxed(&dw_ced->timer, delta, APBTMR_N_LOAD_COUNT);  in apbt_next_event()
217 	apbt_writel_relaxed(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);  in apbt_next_event()
223  * dw_apb_clockevent_init() - use an APB timer as a clock_event_device
227  * @name:	The name used for the timer and the IRQ for it.
228  * @rating:	The rating to give the timer.
229  * @base:	I/O base for the timer registers.
230  * @irq:	The interrupt number to use for the timer.
231  * @freq:	The frequency that the timer counts at.
236  * it has been called for a timer then the IRQ will be requested, if not it
251 	dw_ced->timer.base = base;  in dw_apb_clockevent_init()
252 	dw_ced->timer.irq = irq;  in dw_apb_clockevent_init()
253 	dw_ced->timer.freq = freq;  in dw_apb_clockevent_init()
270 	dw_ced->ced.irq = dw_ced->timer.irq;  in dw_apb_clockevent_init()
279 		pr_err("failed to request timer irq\n");  in dw_apb_clockevent_init()
294 	enable_irq(dw_ced->timer.irq);  in dw_apb_clockevent_resume()
304 	free_irq(dw_ced->timer.irq, &dw_ced->ced);  in dw_apb_clockevent_stop()
314 	apbt_writel(&dw_ced->timer, 0, APBTMR_N_CONTROL);  in dw_apb_clockevent_register()
316 	apbt_enable_int(&dw_ced->timer);  in dw_apb_clockevent_register()
333 	u32 ctrl = apbt_readl(&dw_cs->timer, APBTMR_N_CONTROL);  in dw_apb_clocksource_start()
336 	apbt_writel(&dw_cs->timer, ctrl, APBTMR_N_CONTROL);  in dw_apb_clocksource_start()
337 	apbt_writel(&dw_cs->timer, ~0, APBTMR_N_LOAD_COUNT);  in dw_apb_clocksource_start()
341 	apbt_writel(&dw_cs->timer, ctrl, APBTMR_N_CONTROL);  in dw_apb_clocksource_start()
352 	current_count = apbt_readl_relaxed(&dw_cs->timer,  in __apbt_read_clocksource()
367  * dw_apb_clocksource_init() - use an APB timer as a clocksource.
371  * @base:	The I/O base for the timer registers.
372  * @freq:	The frequency that the timer counts at.
374  * This creates a clocksource using an APB timer but does not yet register it
387 	dw_cs->timer.base = base;  in dw_apb_clocksource_init()
388 	dw_cs->timer.freq = freq;  in dw_apb_clocksource_init()
406 	clocksource_register_hz(&dw_cs->cs, dw_cs->timer.freq);  in dw_apb_clocksource_register()
416 	return (u64)~apbt_readl(&dw_cs->timer, APBTMR_N_CURRENT_VALUE);  in dw_apb_clocksource_read()