1 // SPDX-License-Identifier: GPL-2.0
8  * Gregory CLEMENT <gregory.clement@free-electrons.com>
9  * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
11  * Timer 0 is used as free-running clocksource, while timer 1 is
14  * ---
25  * See Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
31 #include <linux/clk.h>
35 #include <linux/interrupt.h>
74  * SoC-specific data.
107 	 * Clear clockevent timer interrupt.  in armada_370_xp_clkevt_next_event()
131 	 * ACK pending timer interrupt.  in armada_370_xp_clkevt_shutdown()
142 	writel(ticks_per_jiffy - 1, local_base + TIMER0_RELOAD_OFF);  in armada_370_xp_clkevt_set_periodic()
143 	writel(ticks_per_jiffy - 1, local_base + TIMER0_VAL_OFF);  in armada_370_xp_clkevt_set_periodic()
157 	 * ACK timer interrupt and call event handler.  in armada_370_xp_timer_interrupt()
162 	evt->event_handler(evt);  in armada_370_xp_timer_interrupt()
181 	evt->name		= "armada_370_xp_per_cpu_tick";  in armada_370_xp_timer_starting_cpu()
182 	evt->features		= CLOCK_EVT_FEAT_ONESHOT |  in armada_370_xp_timer_starting_cpu()
184 	evt->shift		= 32;  in armada_370_xp_timer_starting_cpu()
185 	evt->rating		= 300;  in armada_370_xp_timer_starting_cpu()
186 	evt->set_next_event	= armada_370_xp_clkevt_next_event;  in armada_370_xp_timer_starting_cpu()
187 	evt->set_state_shutdown	= armada_370_xp_clkevt_shutdown;  in armada_370_xp_timer_starting_cpu()
188 	evt->set_state_periodic	= armada_370_xp_clkevt_set_periodic;  in armada_370_xp_timer_starting_cpu()
189 	evt->set_state_oneshot	= armada_370_xp_clkevt_shutdown;  in armada_370_xp_timer_starting_cpu()
190 	evt->tick_resume	= armada_370_xp_clkevt_shutdown;  in armada_370_xp_timer_starting_cpu()
191 	evt->irq		= armada_370_xp_clkevt_irq;  in armada_370_xp_timer_starting_cpu()
192 	evt->cpumask		= cpumask_of(cpu);  in armada_370_xp_timer_starting_cpu()
195 	enable_percpu_irq(evt->irq, 0);  in armada_370_xp_timer_starting_cpu()
204 	evt->set_state_shutdown(evt);  in armada_370_xp_timer_dying_cpu()
205 	disable_percpu_irq(evt->irq);  in armada_370_xp_timer_dying_cpu()
248 		return -ENXIO;  in armada_370_xp_timer_common_init()
254 		return -ENXIO;  in armada_370_xp_timer_common_init()
276 	 * Setup free-running clocksource timer (interrupts  in armada_370_xp_timer_common_init()
304 		return -ENOMEM;  in armada_370_xp_timer_common_init()
307 	 * Setup clockevent timer (interrupt-driven).  in armada_370_xp_timer_common_init()
335 	struct clk *clk = of_clk_get_by_name(np, "fixed");  in armada_xp_timer_init()  local
338 	if (IS_ERR(clk)) {  in armada_xp_timer_init()
340 		return PTR_ERR(clk);  in armada_xp_timer_init()
343 	ret = clk_prepare_enable(clk);  in armada_xp_timer_init()
347 	timer_clk = clk_get_rate(clk);  in armada_xp_timer_init()
351 TIMER_OF_DECLARE(armada_xp, "marvell,armada-xp-timer",
356 	struct clk *clk;  in armada_375_timer_init()  local
359 	clk = of_clk_get_by_name(np, "fixed");  in armada_375_timer_init()
360 	if (!IS_ERR(clk)) {  in armada_375_timer_init()
361 		ret = clk_prepare_enable(clk);  in armada_375_timer_init()
364 		timer_clk = clk_get_rate(clk);  in armada_375_timer_init()
371 		clk = of_clk_get(np, 0);  in armada_375_timer_init()
374 		if (IS_ERR(clk)) {  in armada_375_timer_init()
376 			return PTR_ERR(clk);  in armada_375_timer_init()
379 		ret = clk_prepare_enable(clk);  in armada_375_timer_init()
383 		timer_clk = clk_get_rate(clk) / TIMER_DIVIDER;  in armada_375_timer_init()
389 TIMER_OF_DECLARE(armada_375, "marvell,armada-375-timer",
394 	struct clk *clk;  in armada_370_timer_init()  local
397 	clk = of_clk_get(np, 0);  in armada_370_timer_init()
398 	if (IS_ERR(clk)) {  in armada_370_timer_init()
400 		return PTR_ERR(clk);  in armada_370_timer_init()
403 	ret = clk_prepare_enable(clk);  in armada_370_timer_init()
407 	timer_clk = clk_get_rate(clk) / TIMER_DIVIDER;  in armada_370_timer_init()
412 TIMER_OF_DECLARE(armada_370, "marvell,armada-370-timer",