Lines Matching refs:timer

49 static inline u32 apbt_readl(struct dw_apb_timer *timer, unsigned long offs)
51 	return readl(timer->base + offs);
54 static inline void apbt_writel(struct dw_apb_timer *timer, u32 val,
57 	writel(val, timer->base + offs);
60 static inline u32 apbt_readl_relaxed(struct dw_apb_timer *timer, unsigned long offs)
62 	return readl_relaxed(timer->base + offs);
65 static inline void apbt_writel_relaxed(struct dw_apb_timer *timer, u32 val,
68 	writel_relaxed(val, timer->base + offs);
71 static void apbt_eoi(struct dw_apb_timer *timer)
73 	apbt_readl_relaxed(timer, APBTMR_N_EOI);
82 		pr_info("Spurious APBT timer interrupt %d\n", irq);
87 		dw_ced->eoi(&dw_ced->timer);
93 static void apbt_enable_int(struct dw_apb_timer *timer)
95 	u32 ctrl = apbt_readl(timer, APBTMR_N_CONTROL);
97 	apbt_readl(timer, APBTMR_N_EOI);
99 	apbt_writel(timer, ctrl, APBTMR_N_CONTROL);
110 	ctrl = apbt_readl(&dw_ced->timer, APBTMR_N_CONTROL);
112 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
124 	ctrl = apbt_readl(&dw_ced->timer, APBTMR_N_CONTROL);
126 	 * set free running mode, this mode will let timer reload max
133 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
135 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
141 	apbt_writel(&dw_ced->timer, ~0, APBTMR_N_LOAD_COUNT);
144 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
151 	unsigned long period = DIV_ROUND_UP(dw_ced->timer.freq, HZ);
157 	ctrl = apbt_readl(&dw_ced->timer, APBTMR_N_CONTROL);
159 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
161 	 * DW APB p. 46, have to disable timer before load counter,
165 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
168 	apbt_writel(&dw_ced->timer, period, APBTMR_N_LOAD_COUNT);
170 	apbt_writel(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
181 	apbt_enable_int(&dw_ced->timer);
191 	/* Disable timer */
192 	ctrl = apbt_readl_relaxed(&dw_ced->timer, APBTMR_N_CONTROL);
194 	apbt_writel_relaxed(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
196 	apbt_writel_relaxed(&dw_ced->timer, delta, APBTMR_N_LOAD_COUNT);
198 	apbt_writel_relaxed(&dw_ced->timer, ctrl, APBTMR_N_CONTROL);
204  * dw_apb_clockevent_init() - use an APB timer as a clock_event_device
208  * @name:	The name used for the timer and the IRQ for it.
209  * @rating:	The rating to give the timer.
210  * @base:	I/O base for the timer registers.
211  * @irq:	The interrupt number to use for the timer.
212  * @freq:	The frequency that the timer counts at.
217  * it has been called for a timer then the IRQ will be requested, if not it
231 	dw_ced->timer.base = base;
232 	dw_ced->timer.irq = irq;
233 	dw_ced->timer.freq = freq;
250 	dw_ced->ced.irq = dw_ced->timer.irq;
259 		pr_err("failed to request timer irq\n");
274 	apbt_writel(&dw_ced->timer, 0, APBTMR_N_CONTROL);
276 	apbt_enable_int(&dw_ced->timer);
293 	u32 ctrl = apbt_readl(&dw_cs->timer, APBTMR_N_CONTROL);
296 	apbt_writel(&dw_cs->timer, ctrl, APBTMR_N_CONTROL);
297 	apbt_writel(&dw_cs->timer, ~0, APBTMR_N_LOAD_COUNT);
301 	apbt_writel(&dw_cs->timer, ctrl, APBTMR_N_CONTROL);
312 	current_count = apbt_readl_relaxed(&dw_cs->timer,
327  * dw_apb_clocksource_init() - use an APB timer as a clocksource.
331  * @base:	The I/O base for the timer registers.
332  * @freq:	The frequency that the timer counts at.
334  * This creates a clocksource using an APB timer but does not yet register it
347 	dw_cs->timer.base = base;
348 	dw_cs->timer.freq = freq;
366 	clocksource_register_hz(&dw_cs->cs, dw_cs->timer.freq);
376 	return (u64)~apbt_readl(&dw_cs->timer, APBTMR_N_CURRENT_VALUE);