1 // SPDX-License-Identifier: GPL-2.0
35 	unsigned int cfg = smbus_read(offset);  in smbus_enable()  local
37 	cfg |= bit;  in smbus_enable()
38 	smbus_write(offset, cfg);  in smbus_enable()
53 	unsigned int cfg = hpet_read(HPET_CFG);  in hpet_start_counter()  local
55 	cfg |= HPET_CFG_ENABLE;  in hpet_start_counter()
56 	hpet_write(HPET_CFG, cfg);  in hpet_start_counter()
61 	unsigned int cfg = hpet_read(HPET_CFG);  in hpet_stop_counter()  local
63 	cfg &= ~HPET_CFG_ENABLE;  in hpet_stop_counter()
64 	hpet_write(HPET_CFG, cfg);  in hpet_stop_counter()
82 	/* Do nothing on Loongson-3 */  in hpet_enable_legacy_int()
87 	int cfg;  in hpet_set_state_periodic()  local
96 	cfg = hpet_read(HPET_T0_CFG);  in hpet_set_state_periodic()
97 	cfg &= ~HPET_TN_LEVEL;  in hpet_set_state_periodic()
98 	cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC | HPET_TN_SETVAL |  in hpet_set_state_periodic()
100 	hpet_write(HPET_T0_CFG, cfg);  in hpet_set_state_periodic()
116 	int cfg;  in hpet_set_state_shutdown()  local
120 	cfg = hpet_read(HPET_T0_CFG);  in hpet_set_state_shutdown()
121 	cfg &= ~HPET_TN_ENABLE;  in hpet_set_state_shutdown()
122 	hpet_write(HPET_T0_CFG, cfg);  in hpet_set_state_shutdown()
130 	int cfg;  in hpet_set_state_oneshot()  local
135 	cfg = hpet_read(HPET_T0_CFG);  in hpet_set_state_oneshot()
139 	 * 0 : non-periodic(oneshot) interrupt  in hpet_set_state_oneshot()
141 	cfg &= ~HPET_TN_PERIODIC;  in hpet_set_state_oneshot()
142 	cfg |= HPET_TN_ENABLE | HPET_TN_32BIT;  in hpet_set_state_oneshot()
143 	hpet_write(HPET_T0_CFG, cfg);  in hpet_set_state_oneshot()
168 	res = (s32)(cnt - hpet_read(HPET_COUNTER));  in hpet_next_event()
170 	return res < HPET_MIN_CYCLES ? -ETIME : 0;  in hpet_next_event()
177 	unsigned int cpu = smp_processor_id();  in hpet_irq_handler()  local
183 		cd = &per_cpu(hpet_clockevent_device, cpu);  in hpet_irq_handler()
184 		cd->event_handler(cd);  in hpet_irq_handler()
222 	unsigned int cpu = smp_processor_id();  in setup_hpet_timer()  local
227 	cd = &per_cpu(hpet_clockevent_device, cpu);  in setup_hpet_timer()
228 	cd->name = "hpet";  in setup_hpet_timer()
229 	cd->rating = 100;  in setup_hpet_timer()
230 	cd->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;  in setup_hpet_timer()
231 	cd->set_state_shutdown = hpet_set_state_shutdown;  in setup_hpet_timer()
232 	cd->set_state_periodic = hpet_set_state_periodic;  in setup_hpet_timer()
233 	cd->set_state_oneshot = hpet_set_state_oneshot;  in setup_hpet_timer()
234 	cd->tick_resume = hpet_tick_resume;  in setup_hpet_timer()
235 	cd->set_next_event = hpet_next_event;  in setup_hpet_timer()
236 	cd->irq = HPET_T0_IRQ;  in setup_hpet_timer()
237 	cd->cpumask = cpumask_of(cpu);  in setup_hpet_timer()
239 	cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);  in setup_hpet_timer()
240 	cd->max_delta_ticks = 0x7fffffff;  in setup_hpet_timer()
241 	cd->min_delta_ns = clockevent_delta2ns(HPET_MIN_PROG_DELTA, cd);  in setup_hpet_timer()
242 	cd->min_delta_ticks = HPET_MIN_PROG_DELTA;  in setup_hpet_timer()