76 	void (*gpt_setup_tctl)(struct imx_timer *imxtm);
77 	void (*gpt_irq_enable)(struct imx_timer *imxtm);
78 	void (*gpt_irq_disable)(struct imx_timer *imxtm);
79 	void (*gpt_irq_acknowledge)(struct imx_timer *imxtm);
89 static void imx1_gpt_irq_disable(struct imx_timer *imxtm)  in imx1_gpt_irq_disable()  argument
93 	tmp = readl_relaxed(imxtm->base + MXC_TCTL);  in imx1_gpt_irq_disable()
94 	writel_relaxed(tmp & ~MX1_2_TCTL_IRQEN, imxtm->base + MXC_TCTL);  in imx1_gpt_irq_disable()
98 static void imx31_gpt_irq_disable(struct imx_timer *imxtm)  in imx31_gpt_irq_disable()  argument
100 	writel_relaxed(0, imxtm->base + V2_IR);  in imx31_gpt_irq_disable()
104 static void imx1_gpt_irq_enable(struct imx_timer *imxtm)  in imx1_gpt_irq_enable()  argument
108 	tmp = readl_relaxed(imxtm->base + MXC_TCTL);  in imx1_gpt_irq_enable()
109 	writel_relaxed(tmp | MX1_2_TCTL_IRQEN, imxtm->base + MXC_TCTL);  in imx1_gpt_irq_enable()
113 static void imx31_gpt_irq_enable(struct imx_timer *imxtm)  in imx31_gpt_irq_enable()  argument
115 	writel_relaxed(1<<0, imxtm->base + V2_IR);  in imx31_gpt_irq_enable()
119 static void imx1_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx1_gpt_irq_acknowledge()  argument
121 	writel_relaxed(0, imxtm->base + MX1_2_TSTAT);  in imx1_gpt_irq_acknowledge()
124 static void imx21_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx21_gpt_irq_acknowledge()  argument
127 				imxtm->base + MX1_2_TSTAT);  in imx21_gpt_irq_acknowledge()
130 static void imx31_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx31_gpt_irq_acknowledge()  argument
132 	writel_relaxed(V2_TSTAT_OF1, imxtm->base + V2_TSTAT);  in imx31_gpt_irq_acknowledge()
152 static int __init mxc_clocksource_init(struct imx_timer *imxtm)  in mxc_clocksource_init()  argument
154 	unsigned int c = clk_get_rate(imxtm->clk_per);  in mxc_clocksource_init()
155 	void __iomem *reg = imxtm->base + imxtm->gpt->reg_tcn;  in mxc_clocksource_init()
175 	struct imx_timer *imxtm = to_imx_timer(ced);  in mx1_2_set_next_event()  local
178 	tcmp = readl_relaxed(imxtm->base + MX1_2_TCN) + evt;  in mx1_2_set_next_event()
180 	writel_relaxed(tcmp, imxtm->base + MX1_2_TCMP);  in mx1_2_set_next_event()
182 	return (int)(tcmp - readl_relaxed(imxtm->base + MX1_2_TCN)) < 0 ?  in mx1_2_set_next_event()
189 	struct imx_timer *imxtm = to_imx_timer(ced);  in v2_set_next_event()  local
192 	tcmp = readl_relaxed(imxtm->base + V2_TCN) + evt;  in v2_set_next_event()
194 	writel_relaxed(tcmp, imxtm->base + V2_TCMP);  in v2_set_next_event()
197 		(int)(tcmp - readl_relaxed(imxtm->base + V2_TCN)) < 0 ?  in v2_set_next_event()
203 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_shutdown()  local
207 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_shutdown()
209 	tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_shutdown()
211 	writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_shutdown()
214 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_shutdown()
225 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_set_oneshot()  local
228 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_set_oneshot()
231 		u32 tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_set_oneshot()
233 		writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_set_oneshot()
236 		imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_set_oneshot()
249 	imxtm->gpt->gpt_irq_enable(imxtm);  in mxc_set_oneshot()
260 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_timer_interrupt()  local
263 	tstat = readl_relaxed(imxtm->base + imxtm->gpt->reg_tstat);  in mxc_timer_interrupt()
265 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_timer_interrupt()
272 static int __init mxc_clockevent_init(struct imx_timer *imxtm)  in mxc_clockevent_init()  argument
274 	struct clock_event_device *ced = &imxtm->ced;  in mxc_clockevent_init()
281 	ced->set_next_event = imxtm->gpt->set_next_event;  in mxc_clockevent_init()
284 	ced->irq = imxtm->irq;  in mxc_clockevent_init()
285 	clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per),  in mxc_clockevent_init()
288 	return request_irq(imxtm->irq, mxc_timer_interrupt,  in mxc_clockevent_init()
292 static void imx1_gpt_setup_tctl(struct imx_timer *imxtm)  in imx1_gpt_setup_tctl()  argument
297 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx1_gpt_setup_tctl()
301 static void imx31_gpt_setup_tctl(struct imx_timer *imxtm)  in imx31_gpt_setup_tctl()  argument
306 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8)  in imx31_gpt_setup_tctl()
311 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx31_gpt_setup_tctl()
314 static void imx6dl_gpt_setup_tctl(struct imx_timer *imxtm)  in imx6dl_gpt_setup_tctl()  argument
319 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) {  in imx6dl_gpt_setup_tctl()
322 		writel_relaxed(7 << V2_TPRER_PRE24M, imxtm->base + MXC_TPRER);  in imx6dl_gpt_setup_tctl()
328 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx6dl_gpt_setup_tctl()
375 static int __init _mxc_timer_init(struct imx_timer *imxtm)  in _mxc_timer_init()  argument
379 	switch (imxtm->type) {  in _mxc_timer_init()
381 		imxtm->gpt = &imx1_gpt_data;  in _mxc_timer_init()
384 		imxtm->gpt = &imx21_gpt_data;  in _mxc_timer_init()
387 		imxtm->gpt = &imx31_gpt_data;  in _mxc_timer_init()
390 		imxtm->gpt = &imx6dl_gpt_data;  in _mxc_timer_init()
396 	if (IS_ERR(imxtm->clk_per)) {  in _mxc_timer_init()
398 		return PTR_ERR(imxtm->clk_per);  in _mxc_timer_init()
401 	if (!IS_ERR(imxtm->clk_ipg))  in _mxc_timer_init()
402 		clk_prepare_enable(imxtm->clk_ipg);  in _mxc_timer_init()
404 	clk_prepare_enable(imxtm->clk_per);  in _mxc_timer_init()
410 	writel_relaxed(0, imxtm->base + MXC_TCTL);  in _mxc_timer_init()
411 	writel_relaxed(0, imxtm->base + MXC_TPRER); /* see datasheet note */  in _mxc_timer_init()
413 	imxtm->gpt->gpt_setup_tctl(imxtm);  in _mxc_timer_init()
416 	ret = mxc_clocksource_init(imxtm);  in _mxc_timer_init()
420 	return mxc_clockevent_init(imxtm);  in _mxc_timer_init()
425 	struct imx_timer *imxtm;  in mxc_timer_init()  local
427 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init()
428 	BUG_ON(!imxtm);  in mxc_timer_init()
430 	imxtm->clk_per = clk_get_sys("imx-gpt.0", "per");  in mxc_timer_init()
431 	imxtm->clk_ipg = clk_get_sys("imx-gpt.0", "ipg");  in mxc_timer_init()
433 	imxtm->base = ioremap(pbase, SZ_4K);  in mxc_timer_init()
434 	BUG_ON(!imxtm->base);  in mxc_timer_init()
436 	imxtm->type = type;  in mxc_timer_init()
437 	imxtm->irq = irq;  in mxc_timer_init()
439 	_mxc_timer_init(imxtm);  in mxc_timer_init()
444 	struct imx_timer *imxtm;  in mxc_timer_init_dt()  local
452 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init_dt()
453 	if (!imxtm)  in mxc_timer_init_dt()
456 	imxtm->base = of_iomap(np, 0);  in mxc_timer_init_dt()
457 	if (!imxtm->base)  in mxc_timer_init_dt()
460 	imxtm->irq = irq_of_parse_and_map(np, 0);  in mxc_timer_init_dt()
461 	if (imxtm->irq <= 0)  in mxc_timer_init_dt()
464 	imxtm->clk_ipg = of_clk_get_by_name(np, "ipg");  in mxc_timer_init_dt()
467 	imxtm->clk_per = of_clk_get_by_name(np, "osc_per");  in mxc_timer_init_dt()
468 	if (IS_ERR(imxtm->clk_per))  in mxc_timer_init_dt()
469 		imxtm->clk_per = of_clk_get_by_name(np, "per");  in mxc_timer_init_dt()
471 	imxtm->type = type;  in mxc_timer_init_dt()
473 	ret = _mxc_timer_init(imxtm);  in mxc_timer_init_dt()