77 	void (*gpt_setup_tctl)(struct imx_timer *imxtm);
78 	void (*gpt_irq_enable)(struct imx_timer *imxtm);
79 	void (*gpt_irq_disable)(struct imx_timer *imxtm);
80 	void (*gpt_irq_acknowledge)(struct imx_timer *imxtm);
90 static void imx1_gpt_irq_disable(struct imx_timer *imxtm)  in imx1_gpt_irq_disable()  argument
94 	tmp = readl_relaxed(imxtm->base + MXC_TCTL);  in imx1_gpt_irq_disable()
95 	writel_relaxed(tmp & ~MX1_2_TCTL_IRQEN, imxtm->base + MXC_TCTL);  in imx1_gpt_irq_disable()
99 static void imx31_gpt_irq_disable(struct imx_timer *imxtm)  in imx31_gpt_irq_disable()  argument
101 	writel_relaxed(0, imxtm->base + V2_IR);  in imx31_gpt_irq_disable()
105 static void imx1_gpt_irq_enable(struct imx_timer *imxtm)  in imx1_gpt_irq_enable()  argument
109 	tmp = readl_relaxed(imxtm->base + MXC_TCTL);  in imx1_gpt_irq_enable()
110 	writel_relaxed(tmp | MX1_2_TCTL_IRQEN, imxtm->base + MXC_TCTL);  in imx1_gpt_irq_enable()
114 static void imx31_gpt_irq_enable(struct imx_timer *imxtm)  in imx31_gpt_irq_enable()  argument
116 	writel_relaxed(1<<0, imxtm->base + V2_IR);  in imx31_gpt_irq_enable()
120 static void imx1_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx1_gpt_irq_acknowledge()  argument
122 	writel_relaxed(0, imxtm->base + MX1_2_TSTAT);  in imx1_gpt_irq_acknowledge()
125 static void imx21_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx21_gpt_irq_acknowledge()  argument
128 				imxtm->base + MX1_2_TSTAT);  in imx21_gpt_irq_acknowledge()
131 static void imx31_gpt_irq_acknowledge(struct imx_timer *imxtm)  in imx31_gpt_irq_acknowledge()  argument
133 	writel_relaxed(V2_TSTAT_OF1, imxtm->base + V2_TSTAT);  in imx31_gpt_irq_acknowledge()
153 static int __init mxc_clocksource_init(struct imx_timer *imxtm)  in mxc_clocksource_init()  argument
155 	unsigned int c = clk_get_rate(imxtm->clk_per);  in mxc_clocksource_init()
156 	void __iomem *reg = imxtm->base + imxtm->gpt->reg_tcn;  in mxc_clocksource_init()
176 	struct imx_timer *imxtm = to_imx_timer(ced);  in mx1_2_set_next_event()  local
179 	tcmp = readl_relaxed(imxtm->base + MX1_2_TCN) + evt;  in mx1_2_set_next_event()
181 	writel_relaxed(tcmp, imxtm->base + MX1_2_TCMP);  in mx1_2_set_next_event()
183 	return (int)(tcmp - readl_relaxed(imxtm->base + MX1_2_TCN)) < 0 ?  in mx1_2_set_next_event()
190 	struct imx_timer *imxtm = to_imx_timer(ced);  in v2_set_next_event()  local
193 	tcmp = readl_relaxed(imxtm->base + V2_TCN) + evt;  in v2_set_next_event()
195 	writel_relaxed(tcmp, imxtm->base + V2_TCMP);  in v2_set_next_event()
198 		(int)(tcmp - readl_relaxed(imxtm->base + V2_TCN)) < 0 ?  in v2_set_next_event()
204 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_shutdown()  local
208 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_shutdown()
210 	tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_shutdown()
212 	writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_shutdown()
215 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_shutdown()
226 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_set_oneshot()  local
229 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_set_oneshot()
232 		u32 tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_set_oneshot()
234 		writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_set_oneshot()
237 		imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_set_oneshot()
250 	imxtm->gpt->gpt_irq_enable(imxtm);  in mxc_set_oneshot()
261 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_timer_interrupt()  local
264 	tstat = readl_relaxed(imxtm->base + imxtm->gpt->reg_tstat);  in mxc_timer_interrupt()
266 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_timer_interrupt()
273 static int __init mxc_clockevent_init(struct imx_timer *imxtm)  in mxc_clockevent_init()  argument
275 	struct clock_event_device *ced = &imxtm->ced;  in mxc_clockevent_init()
276 	struct irqaction *act = &imxtm->act;  in mxc_clockevent_init()
283 	ced->set_next_event = imxtm->gpt->set_next_event;  in mxc_clockevent_init()
286 	ced->irq = imxtm->irq;  in mxc_clockevent_init()
287 	clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per),  in mxc_clockevent_init()
295 	return setup_irq(imxtm->irq, act);  in mxc_clockevent_init()
298 static void imx1_gpt_setup_tctl(struct imx_timer *imxtm)  in imx1_gpt_setup_tctl()  argument
303 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx1_gpt_setup_tctl()
307 static void imx31_gpt_setup_tctl(struct imx_timer *imxtm)  in imx31_gpt_setup_tctl()  argument
312 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8)  in imx31_gpt_setup_tctl()
317 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx31_gpt_setup_tctl()
320 static void imx6dl_gpt_setup_tctl(struct imx_timer *imxtm)  in imx6dl_gpt_setup_tctl()  argument
325 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) {  in imx6dl_gpt_setup_tctl()
328 		writel_relaxed(7 << V2_TPRER_PRE24M, imxtm->base + MXC_TPRER);  in imx6dl_gpt_setup_tctl()
334 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx6dl_gpt_setup_tctl()
381 static int __init _mxc_timer_init(struct imx_timer *imxtm)  in _mxc_timer_init()  argument
385 	switch (imxtm->type) {  in _mxc_timer_init()
387 		imxtm->gpt = &imx1_gpt_data;  in _mxc_timer_init()
390 		imxtm->gpt = &imx21_gpt_data;  in _mxc_timer_init()
393 		imxtm->gpt = &imx31_gpt_data;  in _mxc_timer_init()
396 		imxtm->gpt = &imx6dl_gpt_data;  in _mxc_timer_init()
402 	if (IS_ERR(imxtm->clk_per)) {  in _mxc_timer_init()
404 		return PTR_ERR(imxtm->clk_per);  in _mxc_timer_init()
407 	if (!IS_ERR(imxtm->clk_ipg))  in _mxc_timer_init()
408 		clk_prepare_enable(imxtm->clk_ipg);  in _mxc_timer_init()
410 	clk_prepare_enable(imxtm->clk_per);  in _mxc_timer_init()
416 	writel_relaxed(0, imxtm->base + MXC_TCTL);  in _mxc_timer_init()
417 	writel_relaxed(0, imxtm->base + MXC_TPRER); /* see datasheet note */  in _mxc_timer_init()
419 	imxtm->gpt->gpt_setup_tctl(imxtm);  in _mxc_timer_init()
422 	ret = mxc_clocksource_init(imxtm);  in _mxc_timer_init()
426 	return mxc_clockevent_init(imxtm);  in _mxc_timer_init()
431 	struct imx_timer *imxtm;  in mxc_timer_init()  local
433 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init()
434 	BUG_ON(!imxtm);  in mxc_timer_init()
436 	imxtm->clk_per = clk_get_sys("imx-gpt.0", "per");  in mxc_timer_init()
437 	imxtm->clk_ipg = clk_get_sys("imx-gpt.0", "ipg");  in mxc_timer_init()
439 	imxtm->base = ioremap(pbase, SZ_4K);  in mxc_timer_init()
440 	BUG_ON(!imxtm->base);  in mxc_timer_init()
442 	imxtm->type = type;  in mxc_timer_init()
443 	imxtm->irq = irq;  in mxc_timer_init()
445 	_mxc_timer_init(imxtm);  in mxc_timer_init()
450 	struct imx_timer *imxtm;  in mxc_timer_init_dt()  local
458 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init_dt()
459 	if (!imxtm)  in mxc_timer_init_dt()
462 	imxtm->base = of_iomap(np, 0);  in mxc_timer_init_dt()
463 	if (!imxtm->base)  in mxc_timer_init_dt()
466 	imxtm->irq = irq_of_parse_and_map(np, 0);  in mxc_timer_init_dt()
467 	if (imxtm->irq <= 0)  in mxc_timer_init_dt()
470 	imxtm->clk_ipg = of_clk_get_by_name(np, "ipg");  in mxc_timer_init_dt()
473 	imxtm->clk_per = of_clk_get_by_name(np, "osc_per");  in mxc_timer_init_dt()
474 	if (IS_ERR(imxtm->clk_per))  in mxc_timer_init_dt()
475 		imxtm->clk_per = of_clk_get_by_name(np, "per");  in mxc_timer_init_dt()
477 	imxtm->type = type;  in mxc_timer_init_dt()
479 	ret = _mxc_timer_init(imxtm);  in mxc_timer_init_dt()