1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Mediatek SoCs General-Purpose Timer handling.
18 #include "timer-of.h"
27 #define GPT_IRQ_ENABLE(val)     BIT((val) - 1)
29 #define GPT_IRQ_ACK(val)        BIT((val) - 1)
50 /* system timer */
61  *   - Start timer countdown.
62  *   - Allow timeout ticks being updated.
63  *   - Allow changing interrupt status,like clear irq pending.
88 	clkevt->event_handler(clkevt);  in mtk_syst_handler()
102 	 * Write new timeout ticks. Timer shall start countdown  in mtk_syst_clkevt_next_event()
118 	/* Disable timer */  in mtk_syst_clkevt_shutdown()
139 static void mtk_gpt_clkevt_time_stop(struct timer_of *to, u8 timer)  in mtk_gpt_clkevt_time_stop()  argument
143 	val = readl(timer_of_base(to) + GPT_CTRL_REG(timer));  in mtk_gpt_clkevt_time_stop()
145 	       GPT_CTRL_REG(timer));  in mtk_gpt_clkevt_time_stop()
149 				      unsigned long delay, u8 timer)  in mtk_gpt_clkevt_time_setup()  argument
151 	writel(delay, timer_of_base(to) + GPT_CMP_REG(timer));  in mtk_gpt_clkevt_time_setup()
155 				      bool periodic, u8 timer)  in mtk_gpt_clkevt_time_start()  argument
160 	writel(GPT_IRQ_ACK(timer), timer_of_base(to) + GPT_IRQ_ACK_REG);  in mtk_gpt_clkevt_time_start()
162 	val = readl(timer_of_base(to) + GPT_CTRL_REG(timer));  in mtk_gpt_clkevt_time_start()
164 	/* Clear 2 bit timer operation mode field */  in mtk_gpt_clkevt_time_start()
173 	       timer_of_base(to) + GPT_CTRL_REG(timer));  in mtk_gpt_clkevt_time_start()
188 	mtk_gpt_clkevt_time_setup(to, to->of_clk.period, TIMER_CLK_EVT);  in mtk_gpt_clkevt_set_periodic()
213 	clkevt->event_handler(clkevt);  in mtk_gpt_interrupt()
219 __init mtk_gpt_setup(struct timer_of *to, u8 timer, u8 option)  in mtk_gpt_setup()  argument
222 	       timer_of_base(to) + GPT_CTRL_REG(timer));  in mtk_gpt_setup()
225 	       timer_of_base(to) + GPT_CLK_REG(timer));  in mtk_gpt_setup()
227 	writel(0x0, timer_of_base(to) + GPT_CMP_REG(timer));  in mtk_gpt_setup()
230 	       timer_of_base(to) + GPT_CTRL_REG(timer));  in mtk_gpt_setup()
233 static void mtk_gpt_enable_irq(struct timer_of *to, u8 timer)  in mtk_gpt_enable_irq()  argument
244 	writel(val | GPT_IRQ_ENABLE(timer),  in mtk_gpt_enable_irq()
274 		.name = "mtk-clkevt",
326 			      node->name, timer_of_rate(&to), 300, 32,  in mtk_gpt_init()
340 TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_gpt_init);
341 TIMER_OF_DECLARE(mtk_mt6765, "mediatek,mt6765-timer", mtk_syst_init);