drivers/clocksource/timer-sun4i.c

1 // SPDX-License-Identifier: GPL-2.0
3  * Allwinner A1X SoCs timer handling.
7  * Maxime Ripard <maxime.ripard@free-electrons.com>
24 #include "timer-of.h"
43  * When we disable a timer, we need to wait at least for 2 cycles of
44  * the timer source clock. We will use for that the clocksource timer
52 	while ((old - readl(base + TIMER_CNTVAL_REG(1))) < TIMER_SYNC_TICKS)  in sun4i_clkevt_sync()
56 static void sun4i_clkevt_time_stop(void __iomem *base, u8 timer)  in sun4i_clkevt_time_stop()  argument
58 	u32 val = readl(base + TIMER_CTL_REG(timer));  in sun4i_clkevt_time_stop()
59 	writel(val & ~TIMER_CTL_ENABLE, base + TIMER_CTL_REG(timer));  in sun4i_clkevt_time_stop()
63 static void sun4i_clkevt_time_setup(void __iomem *base, u8 timer,  in sun4i_clkevt_time_setup()  argument
66 	writel(delay, base + TIMER_INTVAL_REG(timer));  in sun4i_clkevt_time_setup()
69 static void sun4i_clkevt_time_start(void __iomem *base, u8 timer,  in sun4i_clkevt_time_start()  argument
72 	u32 val = readl(base + TIMER_CTL_REG(timer));  in sun4i_clkevt_time_start()
80 	       base + TIMER_CTL_REG(timer));  in sun4i_clkevt_time_start()
119 	sun4i_clkevt_time_setup(timer_of_base(to), 0, evt - TIMER_SYNC_TICKS);  in sun4i_clkevt_next_event()
136 	evt->event_handler(evt);  in sun4i_timer_interrupt()
186 	if (of_machine_is_compatible("allwinner,sun4i-a10") ||  in sun4i_timer_init()
187 	    of_machine_is_compatible("allwinner,sun5i-a13") ||  in sun4i_timer_init()
188 	    of_machine_is_compatible("allwinner,sun5i-a10s") ||  in sun4i_timer_init()
189 	    of_machine_is_compatible("allwinner,suniv-f1c100s"))  in sun4i_timer_init()
194 				    node->name, timer_of_rate(&to), 350, 32,  in sun4i_timer_init()
204 	/* Make sure timer is stopped before playing with interrupts */  in sun4i_timer_init()
219 TIMER_OF_DECLARE(sun4i, "allwinner,sun4i-a10-timer",
221 TIMER_OF_DECLARE(sun8i_a23, "allwinner,sun8i-a23-timer",
223 TIMER_OF_DECLARE(sun8i_v3s, "allwinner,sun8i-v3s-timer",
225 TIMER_OF_DECLARE(suniv, "allwinner,suniv-f1c100s-timer",