1 // SPDX-License-Identifier: GPL-2.0
8  * time-efm32 Copyright (C) 2013 Pengutronix
9  * mach-lpc32xx/timer.c Copyright (C) 2009 - 2010 NXP Semiconductors
14 #include <linux/clk.h>
75 	writel_relaxed(LPC32XX_TIMER_TCR_CRST, ddata->base + LPC32XX_TIMER_TCR);  in lpc32xx_clkevt_next_event()
76 	writel_relaxed(delta, ddata->base + LPC32XX_TIMER_MR0);  in lpc32xx_clkevt_next_event()
77 	writel_relaxed(LPC32XX_TIMER_TCR_CEN, ddata->base + LPC32XX_TIMER_TCR);  in lpc32xx_clkevt_next_event()
88 	writel_relaxed(0, ddata->base + LPC32XX_TIMER_TCR);  in lpc32xx_clkevt_shutdown()
102 	writel_relaxed(0, ddata->base + LPC32XX_TIMER_TCR);  in lpc32xx_clkevt_oneshot()
106 		       LPC32XX_TIMER_MCR_MR0S, ddata->base + LPC32XX_TIMER_MCR);  in lpc32xx_clkevt_oneshot()
117 		       ddata->base + LPC32XX_TIMER_MCR);  in lpc32xx_clkevt_periodic()
123 	writel_relaxed(LPC32XX_TIMER_TCR_CRST, ddata->base + LPC32XX_TIMER_TCR);  in lpc32xx_clkevt_periodic()
124 	writel_relaxed(ddata->ticks_per_jiffy, ddata->base + LPC32XX_TIMER_MR0);  in lpc32xx_clkevt_periodic()
125 	writel_relaxed(LPC32XX_TIMER_TCR_CEN, ddata->base + LPC32XX_TIMER_TCR);  in lpc32xx_clkevt_periodic()
135 	writel_relaxed(LPC32XX_TIMER_IR_MR0INT, ddata->base + LPC32XX_TIMER_IR);  in lpc32xx_clock_event_handler()
137 	ddata->evtdev.event_handler(&ddata->evtdev);  in lpc32xx_clock_event_handler()
144 		.name			= "lpc3220 clockevent",
159 	struct clk *clk;  in lpc32xx_clocksource_init()  local
162 	clk = of_clk_get_by_name(np, "timerclk");  in lpc32xx_clocksource_init()
163 	if (IS_ERR(clk)) {  in lpc32xx_clocksource_init()
164 		pr_err("clock get failed (%ld)\n", PTR_ERR(clk));  in lpc32xx_clocksource_init()
165 		return PTR_ERR(clk);  in lpc32xx_clocksource_init()
168 	ret = clk_prepare_enable(clk);  in lpc32xx_clocksource_init()
177 		ret = -EADDRNOTAVAIL;  in lpc32xx_clocksource_init()
192 	rate = clk_get_rate(clk);  in lpc32xx_clocksource_init()
193 	ret = clocksource_mmio_init(base + LPC32XX_TIMER_TC, "lpc3220 timer",  in lpc32xx_clocksource_init()
210 	clk_disable_unprepare(clk);  in lpc32xx_clocksource_init()
212 	clk_put(clk);  in lpc32xx_clocksource_init()
220 	struct clk *clk;  in lpc32xx_clockevent_init()  local
223 	clk = of_clk_get_by_name(np, "timerclk");  in lpc32xx_clockevent_init()
224 	if (IS_ERR(clk)) {  in lpc32xx_clockevent_init()
225 		pr_err("clock get failed (%ld)\n", PTR_ERR(clk));  in lpc32xx_clockevent_init()
226 		return PTR_ERR(clk);  in lpc32xx_clockevent_init()
229 	ret = clk_prepare_enable(clk);  in lpc32xx_clockevent_init()
238 		ret = -EADDRNOTAVAIL;  in lpc32xx_clockevent_init()
245 		ret = -ENOENT;  in lpc32xx_clockevent_init()
258 	rate = clk_get_rate(clk);  in lpc32xx_clockevent_init()
262 					rate, 1, -1);  in lpc32xx_clockevent_init()
265 			  IRQF_TIMER | IRQF_IRQPOLL, "lpc3220 clockevent",  in lpc32xx_clockevent_init()
277 	clk_disable_unprepare(clk);  in lpc32xx_clockevent_init()
279 	clk_put(clk);  in lpc32xx_clockevent_init()
310 TIMER_OF_DECLARE(lpc32xx_timer, "nxp,lpc3220-timer", lpc32xx_timer_init);