drivers/timer/rockchip_timer.c

14 #include <asm/arch-rockchip/timer.h>
16 #include <timer.h>
27 /* Driver private data. Contains timer id. Could be either 0 or 1. */
29 	struct rk_timer *timer;
32 static inline int64_t rockchip_timer_get_curr_value(struct rk_timer *timer)
37 	timebase_l = readl(&timer->timer_curr_value0);
38 	timebase_h = readl(&timer->timer_curr_value1);
55 		/* The timer is available */
56 		rate = timer_get_rate(gd->timer);
57 		timer_get_count(gd->timer, &ticks);
61 		struct rk_timer *timer = NULL;
64 		 * ... so we try to access the raw timer, if it is specified
65 		 * via the tick-timer property in /chosen.
67 		node = ofnode_get_chosen_node("tick-timer");
69 			debug("%s: no /chosen/tick-timer\n", __func__);
73 		timer = (struct rk_timer *)ofnode_get_addr(node);
75 		/* This timer is down-counting */
76 		ticks = ~0uLL - rockchip_timer_get_curr_value(timer);
93 	uint64_t cntr = rockchip_timer_get_curr_value(priv->timer);
104 		priv->timer = dev_read_addr_ptr(dev);
105 		if (!priv->timer)
119 	/* don't reinit, if the timer is already running and set up */
120 	if ((readl(&priv->timer->timer_ctrl_reg) & 1) == 1 &&
121 	    (readl(&priv->timer->timer_load_count0) == reload_val_l) &&
122 	    (readl(&priv->timer->timer_load_count1) == reload_val_h))
125 	/* disable timer and reset all control */
126 	writel(0, &priv->timer->timer_ctrl_reg);
128 	writel(reload_val_l, &priv->timer->timer_load_count0);
129 	writel(reload_val_h, &priv->timer->timer_load_count1);
130 	/* enable timer */
131 	writel(1, &priv->timer->timer_ctrl_reg);
143 	priv->timer = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
155 	{ .compatible = "rockchip,rk3288-timer" },