12 #define pr_fmt(fmt) "DT idle-states: " fmt
34 		return -ENODEV;  in init_state_node()
40 	idle_state->enter = match_id->data;  in init_state_node()
46 	idle_state->enter_s2idle = match_id->data;  in init_state_node()
48 	err = of_property_read_u32(state_node, "wakeup-latency-us",  in init_state_node()
49 				   &idle_state->exit_latency);  in init_state_node()
53 		err = of_property_read_u32(state_node, "entry-latency-us",  in init_state_node()
56 			pr_debug(" * %pOF missing entry-latency-us property\n",  in init_state_node()
58 			return -EINVAL;  in init_state_node()
61 		err = of_property_read_u32(state_node, "exit-latency-us",  in init_state_node()
64 			pr_debug(" * %pOF missing exit-latency-us property\n",  in init_state_node()
66 			return -EINVAL;  in init_state_node()
69 		 * If wakeup-latency-us is missing, default to entry+exit  in init_state_node()
72 		idle_state->exit_latency = entry_latency + exit_latency;  in init_state_node()
75 	err = of_property_read_u32(state_node, "min-residency-us",  in init_state_node()
76 				   &idle_state->target_residency);  in init_state_node()
78 		pr_debug(" * %pOF missing min-residency-us property\n",  in init_state_node()
80 		return -EINVAL;  in init_state_node()
83 	err = of_property_read_string(state_node, "idle-state-name", &desc);  in init_state_node()
85 		desc = state_node->name;  in init_state_node()
87 	idle_state->flags = 0;  in init_state_node()
88 	if (of_property_read_bool(state_node, "local-timer-stop"))  in init_state_node()
89 		idle_state->flags |= CPUIDLE_FLAG_TIMER_STOP;  in init_state_node()
95 	strncpy(idle_state->name, state_node->name, CPUIDLE_NAME_LEN - 1);  in init_state_node()
96 	strncpy(idle_state->desc, desc, CPUIDLE_DESC_LEN - 1);  in init_state_node()
116 	 * away since we certainly hit a firmware misconfiguration.  in idle_state_valid()
121 		curr_state_node = of_parse_phandle(cpu_node, "cpu-idle-states",  in idle_state_valid()
136  * dt_init_idle_driver() - Parse the DT idle states and initialize the
138  * @drv:	  Pointer to CPU idle driver to be initialized
149  * @start_idx:    First idle state index to be initialized
152  * array entries in the cpuidle driver are initialized accordingly starting
168 		return -EINVAL;  in dt_init_idle_driver()
173 	 * across CPUs, otherwise we hit a firmware misconfiguration.  in dt_init_idle_driver()
175 	cpumask = drv->cpumask ? : cpu_possible_mask;  in dt_init_idle_driver()
179 		state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);  in dt_init_idle_driver()
191 			err = -EINVAL;  in dt_init_idle_driver()
200 		idle_state = &drv->states[state_idx++];  in dt_init_idle_driver()
205 			err = -EINVAL;  in dt_init_idle_driver()
220 		drv->state_count = state_idx;  in dt_init_idle_driver()