12 #include <linux/clk.h>
49 	if (priv->big_endian)  in ftm_readl()
57 	if (priv->big_endian)  in ftm_writel()
67 	/* select and enable counter clock source */  in ftm_counter_enable()
70 	val |= priv->ps | FTM_SC_CLK(1);  in ftm_counter_enable()
78 	/* disable counter clock source */  in ftm_counter_disable()
123 	return ftm_readl(priv->clksrc_base + FTM_CNT);  in ftm_read_sched_clock()
134 	 * a, the counter source clock is diabled.  in ftm_set_next_event()
136 	ftm_counter_disable(priv->clkevt_base);  in ftm_set_next_event()
139 	ftm_reset_counter(priv->clkevt_base);  in ftm_set_next_event()
145 	 * changes from MOD to CNTIN. So we should using the delta - 1.  in ftm_set_next_event()
147 	ftm_writel(delta - 1, priv->clkevt_base + FTM_MOD);  in ftm_set_next_event()
149 	ftm_counter_enable(priv->clkevt_base);  in ftm_set_next_event()
151 	ftm_irq_enable(priv->clkevt_base);  in ftm_set_next_event()
158 	ftm_counter_disable(priv->clkevt_base);  in ftm_set_oneshot()
164 	ftm_set_next_event(priv->periodic_cyc, evt);  in ftm_set_periodic()
172 	ftm_irq_acknowledge(priv->clkevt_base);  in ftm_evt_interrupt()
175 		ftm_irq_disable(priv->clkevt_base);  in ftm_evt_interrupt()
176 		ftm_counter_disable(priv->clkevt_base);  in ftm_evt_interrupt()
179 	evt->event_handler(evt);  in ftm_evt_interrupt()
205 	ftm_writel(0x00, priv->clkevt_base + FTM_CNTIN);  in ftm_clockevent_init()
206 	ftm_writel(~0u, priv->clkevt_base + FTM_MOD);  in ftm_clockevent_init()
208 	ftm_reset_counter(priv->clkevt_base);  in ftm_clockevent_init()
220 					freq / (1 << priv->ps),  in ftm_clockevent_init()
223 	ftm_counter_enable(priv->clkevt_base);  in ftm_clockevent_init()
232 	ftm_writel(0x00, priv->clksrc_base + FTM_CNTIN);  in ftm_clocksource_init()
233 	ftm_writel(~0u, priv->clksrc_base + FTM_MOD);  in ftm_clocksource_init()
235 	ftm_reset_counter(priv->clksrc_base);  in ftm_clocksource_init()
237 	sched_clock_register(ftm_read_sched_clock, 16, freq / (1 << priv->ps));  in ftm_clocksource_init()
238 	err = clocksource_mmio_init(priv->clksrc_base + FTM_CNT, "fsl-ftm",  in ftm_clocksource_init()
239 				    freq / (1 << priv->ps), 300, 16,  in ftm_clocksource_init()
242 		pr_err("ftm: init clock source mmio failed: %d\n", err);  in ftm_clocksource_init()
246 	ftm_counter_enable(priv->clksrc_base);  in ftm_clocksource_init()
254 	struct clk *clk;  in __ftm_clk_init()  local
257 	clk = of_clk_get_by_name(np, cnt_name);  in __ftm_clk_init()
258 	if (IS_ERR(clk)) {  in __ftm_clk_init()
259 		pr_err("ftm: Cannot get \"%s\": %ld\n", cnt_name, PTR_ERR(clk));  in __ftm_clk_init()
260 		return PTR_ERR(clk);  in __ftm_clk_init()
262 	err = clk_prepare_enable(clk);  in __ftm_clk_init()
269 	clk = of_clk_get_by_name(np, ftm_name);  in __ftm_clk_init()
270 	if (IS_ERR(clk)) {  in __ftm_clk_init()
271 		pr_err("ftm: Cannot get \"%s\": %ld\n", ftm_name, PTR_ERR(clk));  in __ftm_clk_init()
272 		return PTR_ERR(clk);  in __ftm_clk_init()
274 	err = clk_prepare_enable(clk);  in __ftm_clk_init()
279 	return clk_get_rate(clk);  in __ftm_clk_init()
286 	freq = __ftm_clk_init(np, "ftm-evt-counter-en", "ftm-evt");  in ftm_clk_init()
290 	freq = __ftm_clk_init(np, "ftm-src-counter-en", "ftm-src");  in ftm_clk_init()
299 	priv->ps = 0;  in ftm_calc_closest_round_cyc()
306 		priv->periodic_cyc = DIV_ROUND_CLOSEST(freq,  in ftm_calc_closest_round_cyc()
307 						HZ * (1 << priv->ps++));  in ftm_calc_closest_round_cyc()
308 	} while (priv->periodic_cyc > 0xFFFF);  in ftm_calc_closest_round_cyc()
310 	if (priv->ps > FTM_PS_MAX) {  in ftm_calc_closest_round_cyc()
312 				priv->ps, FTM_PS_MAX);  in ftm_calc_closest_round_cyc()
313 		return -EINVAL;  in ftm_calc_closest_round_cyc()
326 		return -ENOMEM;  in ftm_timer_init()
328 	ret = -ENXIO;  in ftm_timer_init()
329 	priv->clkevt_base = of_iomap(np, 0);  in ftm_timer_init()
330 	if (!priv->clkevt_base) {  in ftm_timer_init()
335 	priv->clksrc_base = of_iomap(np, 1);  in ftm_timer_init()
336 	if (!priv->clksrc_base) {  in ftm_timer_init()
337 		pr_err("ftm: unable to map source timer registers\n");  in ftm_timer_init()
341 	ret = -EINVAL;  in ftm_timer_init()
348 	priv->big_endian = of_property_read_bool(np, "big-endian");  in ftm_timer_init()
369 	iounmap(priv->clksrc_base);  in ftm_timer_init()
371 	iounmap(priv->clkevt_base);  in ftm_timer_init()
376 TIMER_OF_DECLARE(flextimer, "fsl,ftm-timer", ftm_timer_init);