93 	void (*gpt_setup_tctl)(struct imx_timer *imxtm);
94 	void (*gpt_irq_enable)(struct imx_timer *imxtm);
95 	void (*gpt_irq_disable)(struct imx_timer *imxtm);
96 	void (*gpt_irq_acknowledge)(struct imx_timer *imxtm);
106 static void imx1_gpt_irq_disable(struct imx_timer *imxtm)  in imx1_gpt_irq_disable()  argument
110 	tmp = readl_relaxed(imxtm->base + MXC_TCTL);  in imx1_gpt_irq_disable()
111 	writel_relaxed(tmp & ~MX1_2_TCTL_IRQEN, imxtm->base + MXC_TCTL);  in imx1_gpt_irq_disable()
115 static void imx31_gpt_irq_disable(struct imx_timer *imxtm)  in imx31_gpt_irq_disable()  argument
117 	writel_relaxed(0, imxtm->base + V2_IR);  in imx31_gpt_irq_disable()
121 static void imx1_gpt_irq_enable(struct imx_timer *imxtm)  in imx1_gpt_irq_enable()  argument
125 	tmp = readl_relaxed(imxtm->base + MXC_TCTL);  in imx1_gpt_irq_enable()
126 	writel_relaxed(tmp | MX1_2_TCTL_IRQEN, imxtm->base + MXC_TCTL);  in imx1_gpt_irq_enable()
130 static void imx31_gpt_irq_enable(struct imx_timer *imxtm)  in imx31_gpt_irq_enable()  argument
132 	writel_relaxed(1<<0, imxtm->base + V2_IR);  in imx31_gpt_irq_enable()
136 static void imx1_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx1_gpt_irq_acknowledge()  argument
138 	writel_relaxed(0, imxtm->base + MX1_2_TSTAT);  in imx1_gpt_irq_acknowledge()
141 static void imx21_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx21_gpt_irq_acknowledge()  argument
144 				imxtm->base + MX1_2_TSTAT);  in imx21_gpt_irq_acknowledge()
147 static void imx31_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx31_gpt_irq_acknowledge()  argument
149 	writel_relaxed(V2_TSTAT_OF1, imxtm->base + V2_TSTAT);  in imx31_gpt_irq_acknowledge()
167 static int __init mxc_clocksource_init(struct imx_timer *imxtm)  in mxc_clocksource_init()  argument
169 	unsigned int c = clk_get_rate(imxtm->clk_per);  in mxc_clocksource_init()
170 	void __iomem *reg = imxtm->base + imxtm->gpt->reg_tcn;  in mxc_clocksource_init()
188 	struct imx_timer *imxtm = to_imx_timer(ced);  in mx1_2_set_next_event()  local
191 	tcmp = readl_relaxed(imxtm->base + MX1_2_TCN) + evt;  in mx1_2_set_next_event()
193 	writel_relaxed(tcmp, imxtm->base + MX1_2_TCMP);  in mx1_2_set_next_event()
195 	return (int)(tcmp - readl_relaxed(imxtm->base + MX1_2_TCN)) < 0 ?  in mx1_2_set_next_event()
202 	struct imx_timer *imxtm = to_imx_timer(ced);  in v2_set_next_event()  local
205 	tcmp = readl_relaxed(imxtm->base + V2_TCN) + evt;  in v2_set_next_event()
207 	writel_relaxed(tcmp, imxtm->base + V2_TCMP);  in v2_set_next_event()
210 		(int)(tcmp - readl_relaxed(imxtm->base + V2_TCN)) < 0 ?  in v2_set_next_event()
216 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_shutdown()  local
227 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_shutdown()
229 	tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_shutdown()
231 	writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_shutdown()
234 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_shutdown()
247 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_set_oneshot()  local
257 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_set_oneshot()
260 		u32 tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_set_oneshot()
262 		writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_set_oneshot()
265 		imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_set_oneshot()
278 	imxtm->gpt->gpt_irq_enable(imxtm);  in mxc_set_oneshot()
290 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_timer_interrupt()  local
293 	tstat = readl_relaxed(imxtm->base + imxtm->gpt->reg_tstat);  in mxc_timer_interrupt()
295 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_timer_interrupt()
302 static int __init mxc_clockevent_init(struct imx_timer *imxtm)  in mxc_clockevent_init()  argument
304 	struct clock_event_device *ced = &imxtm->ced;  in mxc_clockevent_init()
305 	struct irqaction *act = &imxtm->act;  in mxc_clockevent_init()
312 	ced->set_next_event = imxtm->gpt->set_next_event;  in mxc_clockevent_init()
315 	ced->irq = imxtm->irq;  in mxc_clockevent_init()
316 	clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per),  in mxc_clockevent_init()
324 	return setup_irq(imxtm->irq, act);  in mxc_clockevent_init()
327 static void imx1_gpt_setup_tctl(struct imx_timer *imxtm)  in imx1_gpt_setup_tctl()  argument
332 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx1_gpt_setup_tctl()
336 static void imx31_gpt_setup_tctl(struct imx_timer *imxtm)  in imx31_gpt_setup_tctl()  argument
341 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8)  in imx31_gpt_setup_tctl()
346 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx31_gpt_setup_tctl()
349 static void imx6dl_gpt_setup_tctl(struct imx_timer *imxtm)  in imx6dl_gpt_setup_tctl()  argument
354 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) {  in imx6dl_gpt_setup_tctl()
357 		writel_relaxed(7 << V2_TPRER_PRE24M, imxtm->base + MXC_TPRER);  in imx6dl_gpt_setup_tctl()
363 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx6dl_gpt_setup_tctl()
410 static void __init _mxc_timer_init(struct imx_timer *imxtm)  in _mxc_timer_init()  argument
412 	switch (imxtm->type) {  in _mxc_timer_init()
414 		imxtm->gpt = &imx1_gpt_data;  in _mxc_timer_init()
417 		imxtm->gpt = &imx21_gpt_data;  in _mxc_timer_init()
420 		imxtm->gpt = &imx31_gpt_data;  in _mxc_timer_init()
423 		imxtm->gpt = &imx6dl_gpt_data;  in _mxc_timer_init()
429 	if (IS_ERR(imxtm->clk_per)) {  in _mxc_timer_init()
434 	if (!IS_ERR(imxtm->clk_ipg))  in _mxc_timer_init()
435 		clk_prepare_enable(imxtm->clk_ipg);  in _mxc_timer_init()
437 	clk_prepare_enable(imxtm->clk_per);  in _mxc_timer_init()
443 	writel_relaxed(0, imxtm->base + MXC_TCTL);  in _mxc_timer_init()
444 	writel_relaxed(0, imxtm->base + MXC_TPRER); /* see datasheet note */  in _mxc_timer_init()
446 	imxtm->gpt->gpt_setup_tctl(imxtm);  in _mxc_timer_init()
449 	mxc_clocksource_init(imxtm);  in _mxc_timer_init()
450 	mxc_clockevent_init(imxtm);  in _mxc_timer_init()
455 	struct imx_timer *imxtm;  in mxc_timer_init()  local
457 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init()
458 	BUG_ON(!imxtm);  in mxc_timer_init()
460 	imxtm->clk_per = clk_get_sys("imx-gpt.0", "per");  in mxc_timer_init()
461 	imxtm->clk_ipg = clk_get_sys("imx-gpt.0", "ipg");  in mxc_timer_init()
463 	imxtm->base = ioremap(pbase, SZ_4K);  in mxc_timer_init()
464 	BUG_ON(!imxtm->base);  in mxc_timer_init()
466 	imxtm->type = type;  in mxc_timer_init()
467 	imxtm->irq = irq;  in mxc_timer_init()
469 	_mxc_timer_init(imxtm);  in mxc_timer_init()
474 	struct imx_timer *imxtm;  in mxc_timer_init_dt()  local
481 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init_dt()
482 	BUG_ON(!imxtm);  in mxc_timer_init_dt()
484 	imxtm->base = of_iomap(np, 0);  in mxc_timer_init_dt()
485 	WARN_ON(!imxtm->base);  in mxc_timer_init_dt()
486 	imxtm->irq = irq_of_parse_and_map(np, 0);  in mxc_timer_init_dt()
488 	imxtm->clk_ipg = of_clk_get_by_name(np, "ipg");  in mxc_timer_init_dt()
491 	imxtm->clk_per = of_clk_get_by_name(np, "osc_per");  in mxc_timer_init_dt()
492 	if (IS_ERR(imxtm->clk_per))  in mxc_timer_init_dt()
493 		imxtm->clk_per = of_clk_get_by_name(np, "per");  in mxc_timer_init_dt()
495 	imxtm->type = type;  in mxc_timer_init_dt()
497 	_mxc_timer_init(imxtm);  in mxc_timer_init_dt()