68 static void mtk_clkevt_time_stop(struct mtk_clock_event_device *evt, u8 timer)  in mtk_clkevt_time_stop()  argument
72 	val = readl(evt->gpt_base + TIMER_CTRL_REG(timer));  in mtk_clkevt_time_stop()
73 	writel(val & ~TIMER_CTRL_ENABLE, evt->gpt_base +  in mtk_clkevt_time_stop()
77 static void mtk_clkevt_time_setup(struct mtk_clock_event_device *evt,  in mtk_clkevt_time_setup()  argument
80 	writel(delay, evt->gpt_base + TIMER_CMP_REG(timer));  in mtk_clkevt_time_setup()
83 static void mtk_clkevt_time_start(struct mtk_clock_event_device *evt,  in mtk_clkevt_time_start()  argument
89 	writel(GPT_IRQ_ACK(timer), evt->gpt_base + GPT_IRQ_ACK_REG);  in mtk_clkevt_time_start()
91 	val = readl(evt->gpt_base + TIMER_CTRL_REG(timer));  in mtk_clkevt_time_start()
102 	       evt->gpt_base + TIMER_CTRL_REG(timer));  in mtk_clkevt_time_start()
108 	struct mtk_clock_event_device *evt = to_mtk_clk(clk);  in mtk_clkevt_mode()  local
110 	mtk_clkevt_time_stop(evt, GPT_CLK_EVT);  in mtk_clkevt_mode()
114 		mtk_clkevt_time_setup(evt, evt->ticks_per_jiffy, GPT_CLK_EVT);  in mtk_clkevt_mode()
115 		mtk_clkevt_time_start(evt, true, GPT_CLK_EVT);  in mtk_clkevt_mode()
131 	struct mtk_clock_event_device *evt = to_mtk_clk(clk);  in mtk_clkevt_next_event()  local
133 	mtk_clkevt_time_stop(evt, GPT_CLK_EVT);  in mtk_clkevt_next_event()
134 	mtk_clkevt_time_setup(evt, event, GPT_CLK_EVT);  in mtk_clkevt_next_event()
135 	mtk_clkevt_time_start(evt, false, GPT_CLK_EVT);  in mtk_clkevt_next_event()
142 	struct mtk_clock_event_device *evt = dev_id;  in mtk_timer_interrupt()  local
145 	writel(GPT_IRQ_ACK(GPT_CLK_EVT), evt->gpt_base + GPT_IRQ_ACK_REG);  in mtk_timer_interrupt()
146 	evt->dev.event_handler(&evt->dev);  in mtk_timer_interrupt()
151 static void mtk_timer_global_reset(struct mtk_clock_event_device *evt)  in mtk_timer_global_reset()  argument
154 	writel(0x0, evt->gpt_base + GPT_IRQ_EN_REG);  in mtk_timer_global_reset()
156 	writel(0x3f, evt->gpt_base + GPT_IRQ_ACK_REG);  in mtk_timer_global_reset()
160 mtk_timer_setup(struct mtk_clock_event_device *evt, u8 timer, u8 option)  in mtk_timer_setup()  argument
163 		evt->gpt_base + TIMER_CTRL_REG(timer));  in mtk_timer_setup()
166 			evt->gpt_base + TIMER_CLK_REG(timer));  in mtk_timer_setup()
168 	writel(0x0, evt->gpt_base + TIMER_CMP_REG(timer));  in mtk_timer_setup()
171 			evt->gpt_base + TIMER_CTRL_REG(timer));  in mtk_timer_setup()
174 static void mtk_timer_enable_irq(struct mtk_clock_event_device *evt, u8 timer)  in mtk_timer_enable_irq()  argument
178 	val = readl(evt->gpt_base + GPT_IRQ_EN_REG);  in mtk_timer_enable_irq()
180 			evt->gpt_base + GPT_IRQ_EN_REG);  in mtk_timer_enable_irq()
185 	struct mtk_clock_event_device *evt;  in mtk_timer_init()  local
190 	evt = kzalloc(sizeof(*evt), GFP_KERNEL);  in mtk_timer_init()
191 	if (!evt) {  in mtk_timer_init()
196 	evt->dev.name = "mtk_tick";  in mtk_timer_init()
197 	evt->dev.rating = 300;  in mtk_timer_init()
198 	evt->dev.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;  in mtk_timer_init()
199 	evt->dev.set_mode = mtk_clkevt_mode;  in mtk_timer_init()
200 	evt->dev.set_next_event = mtk_clkevt_next_event;  in mtk_timer_init()
201 	evt->dev.cpumask = cpu_possible_mask;  in mtk_timer_init()
203 	evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer");  in mtk_timer_init()
204 	if (IS_ERR(evt->gpt_base)) {  in mtk_timer_init()
209 	evt->dev.irq = irq_of_parse_and_map(node, 0);  in mtk_timer_init()
210 	if (evt->dev.irq <= 0) {  in mtk_timer_init()
227 	mtk_timer_global_reset(evt);  in mtk_timer_init()
229 	if (request_irq(evt->dev.irq, mtk_timer_interrupt,  in mtk_timer_init()
230 			IRQF_TIMER | IRQF_IRQPOLL, "mtk_timer", evt)) {  in mtk_timer_init()
231 		pr_warn("failed to setup irq %d\n", evt->dev.irq);  in mtk_timer_init()
235 	evt->ticks_per_jiffy = DIV_ROUND_UP(rate, HZ);  in mtk_timer_init()
238 	mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN);  in mtk_timer_init()
239 	clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC),  in mtk_timer_init()
243 	mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT);  in mtk_timer_init()
244 	clockevents_config_and_register(&evt->dev, rate, 0x3,  in mtk_timer_init()
247 	mtk_timer_enable_irq(evt, GPT_CLK_EVT);  in mtk_timer_init()
256 	irq_dispose_mapping(evt->dev.irq);  in mtk_timer_init()
258 	iounmap(evt->gpt_base);  in mtk_timer_init()