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()
151 static int __init mxc_clocksource_init(struct imx_timer *imxtm)  in mxc_clocksource_init()  argument
153 	unsigned int c = clk_get_rate(imxtm->clk_per);  in mxc_clocksource_init()
154 	void __iomem *reg = imxtm->base + imxtm->gpt->reg_tcn;  in mxc_clocksource_init()
172 	struct imx_timer *imxtm = to_imx_timer(ced);  in mx1_2_set_next_event()  local
175 	tcmp = readl_relaxed(imxtm->base + MX1_2_TCN) + evt;  in mx1_2_set_next_event()
177 	writel_relaxed(tcmp, imxtm->base + MX1_2_TCMP);  in mx1_2_set_next_event()
179 	return (int)(tcmp - readl_relaxed(imxtm->base + MX1_2_TCN)) < 0 ?  in mx1_2_set_next_event()
186 	struct imx_timer *imxtm = to_imx_timer(ced);  in v2_set_next_event()  local
189 	tcmp = readl_relaxed(imxtm->base + V2_TCN) + evt;  in v2_set_next_event()
191 	writel_relaxed(tcmp, imxtm->base + V2_TCMP);  in v2_set_next_event()
194 		(int)(tcmp - readl_relaxed(imxtm->base + V2_TCN)) < 0 ?  in v2_set_next_event()
200 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_shutdown()  local
211 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_shutdown()
213 	tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_shutdown()
215 	writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_shutdown()
218 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_shutdown()
231 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_set_oneshot()  local
241 	imxtm->gpt->gpt_irq_disable(imxtm);  in mxc_set_oneshot()
244 		u32 tcn = readl_relaxed(imxtm->base + imxtm->gpt->reg_tcn);  in mxc_set_oneshot()
246 		writel_relaxed(tcn - 3, imxtm->base + imxtm->gpt->reg_tcmp);  in mxc_set_oneshot()
249 		imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_set_oneshot()
262 	imxtm->gpt->gpt_irq_enable(imxtm);  in mxc_set_oneshot()
274 	struct imx_timer *imxtm = to_imx_timer(ced);  in mxc_timer_interrupt()  local
277 	tstat = readl_relaxed(imxtm->base + imxtm->gpt->reg_tstat);  in mxc_timer_interrupt()
279 	imxtm->gpt->gpt_irq_acknowledge(imxtm);  in mxc_timer_interrupt()
286 static int __init mxc_clockevent_init(struct imx_timer *imxtm)  in mxc_clockevent_init()  argument
288 	struct clock_event_device *ced = &imxtm->ced;  in mxc_clockevent_init()
289 	struct irqaction *act = &imxtm->act;  in mxc_clockevent_init()
296 	ced->set_next_event = imxtm->gpt->set_next_event;  in mxc_clockevent_init()
299 	ced->irq = imxtm->irq;  in mxc_clockevent_init()
300 	clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per),  in mxc_clockevent_init()
308 	return setup_irq(imxtm->irq, act);  in mxc_clockevent_init()
311 static void imx1_gpt_setup_tctl(struct imx_timer *imxtm)  in imx1_gpt_setup_tctl()  argument
316 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx1_gpt_setup_tctl()
320 static void imx31_gpt_setup_tctl(struct imx_timer *imxtm)  in imx31_gpt_setup_tctl()  argument
325 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8)  in imx31_gpt_setup_tctl()
330 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx31_gpt_setup_tctl()
333 static void imx6dl_gpt_setup_tctl(struct imx_timer *imxtm)  in imx6dl_gpt_setup_tctl()  argument
338 	if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) {  in imx6dl_gpt_setup_tctl()
341 		writel_relaxed(7 << V2_TPRER_PRE24M, imxtm->base + MXC_TPRER);  in imx6dl_gpt_setup_tctl()
347 	writel_relaxed(tctl_val, imxtm->base + MXC_TCTL);  in imx6dl_gpt_setup_tctl()
394 static int __init _mxc_timer_init(struct imx_timer *imxtm)  in _mxc_timer_init()  argument
398 	switch (imxtm->type) {  in _mxc_timer_init()
400 		imxtm->gpt = &imx1_gpt_data;  in _mxc_timer_init()
403 		imxtm->gpt = &imx21_gpt_data;  in _mxc_timer_init()
406 		imxtm->gpt = &imx31_gpt_data;  in _mxc_timer_init()
409 		imxtm->gpt = &imx6dl_gpt_data;  in _mxc_timer_init()
415 	if (IS_ERR(imxtm->clk_per)) {  in _mxc_timer_init()
417 		return PTR_ERR(imxtm->clk_per);  in _mxc_timer_init()
420 	if (!IS_ERR(imxtm->clk_ipg))  in _mxc_timer_init()
421 		clk_prepare_enable(imxtm->clk_ipg);  in _mxc_timer_init()
423 	clk_prepare_enable(imxtm->clk_per);  in _mxc_timer_init()
429 	writel_relaxed(0, imxtm->base + MXC_TCTL);  in _mxc_timer_init()
430 	writel_relaxed(0, imxtm->base + MXC_TPRER); /* see datasheet note */  in _mxc_timer_init()
432 	imxtm->gpt->gpt_setup_tctl(imxtm);  in _mxc_timer_init()
435 	ret = mxc_clocksource_init(imxtm);  in _mxc_timer_init()
439 	return mxc_clockevent_init(imxtm);  in _mxc_timer_init()
444 	struct imx_timer *imxtm;  in mxc_timer_init()  local
446 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init()
447 	BUG_ON(!imxtm);  in mxc_timer_init()
449 	imxtm->clk_per = clk_get_sys("imx-gpt.0", "per");  in mxc_timer_init()
450 	imxtm->clk_ipg = clk_get_sys("imx-gpt.0", "ipg");  in mxc_timer_init()
452 	imxtm->base = ioremap(pbase, SZ_4K);  in mxc_timer_init()
453 	BUG_ON(!imxtm->base);  in mxc_timer_init()
455 	imxtm->type = type;  in mxc_timer_init()
456 	imxtm->irq = irq;  in mxc_timer_init()
458 	_mxc_timer_init(imxtm);  in mxc_timer_init()
463 	struct imx_timer *imxtm;  in mxc_timer_init_dt()  local
471 	imxtm = kzalloc(sizeof(*imxtm), GFP_KERNEL);  in mxc_timer_init_dt()
472 	if (!imxtm)  in mxc_timer_init_dt()
475 	imxtm->base = of_iomap(np, 0);  in mxc_timer_init_dt()
476 	if (!imxtm->base)  in mxc_timer_init_dt()
479 	imxtm->irq = irq_of_parse_and_map(np, 0);  in mxc_timer_init_dt()
480 	if (imxtm->irq <= 0)  in mxc_timer_init_dt()
483 	imxtm->clk_ipg = of_clk_get_by_name(np, "ipg");  in mxc_timer_init_dt()
486 	imxtm->clk_per = of_clk_get_by_name(np, "osc_per");  in mxc_timer_init_dt()
487 	if (IS_ERR(imxtm->clk_per))  in mxc_timer_init_dt()
488 		imxtm->clk_per = of_clk_get_by_name(np, "per");  in mxc_timer_init_dt()
490 	imxtm->type = type;  in mxc_timer_init_dt()
492 	ret = _mxc_timer_init(imxtm);  in mxc_timer_init_dt()