1 /* SPDX-License-Identifier: BSD-3-Clause
2 *
3 * Copyright(c) 2018 Intel Corporation. All rights reserved.
4 *
5 * Author: Tomasz Lauda <tomasz.lauda@linux.intel.com>
6 * Janusz Jankowski <janusz.jankowski@linux.intel.com>
7 */
8
9 /**
10 * \file include/sof/lib/pm_runtime.h
11 * \brief Runtime power management header file
12 * \author Tomasz Lauda <tomasz.lauda@linux.intel.com>
13 */
14
15 #ifndef __SOF_LIB_PM_RUNTIME_H__
16 #define __SOF_LIB_PM_RUNTIME_H__
17
18 #include <platform/lib/pm_runtime.h>
19 #include <sof/sof.h>
20 #include <sof/spinlock.h>
21 #include <sof/trace/trace.h>
22 #include <user/trace.h>
23 #include <stdint.h>
24
25 /** \addtogroup pm_runtime PM Runtime
26 * PM runtime specification.
27 * @{
28 */
29
30 /* PM runtime flags */
31
32 #define RPM_ASYNC 0x01 /**< Request is asynchronous */
33
34 /** \brief Runtime power management context */
35 enum pm_runtime_context {
36 PM_RUNTIME_HOST_DMA_L1 = 0, /**< Host DMA L1 */
37 SSP_CLK, /**< SSP Clock */
38 SSP_POW, /**< SSP Power */
39 DMIC_CLK, /**< DMIC Clock */
40 DMIC_POW, /**< DMIC Power */
41 DW_DMAC_CLK, /**< DW DMAC Clock */
42 CORE_MEMORY_POW, /**< Core Memory power */
43 CORE_HP_CLK, /**< High Performance Clock*/
44 PM_RUNTIME_DSP /**< DSP */
45 };
46
47 /** \brief Runtime power management data. */
48 struct pm_runtime_data {
49 spinlock_t lock; /**< lock mechanism */
50 void *platform_data; /**< platform specific data */
51 #if CONFIG_DSP_RESIDENCY_COUNTERS
52 struct r_counters_data *r_counters; /**< diagnostic DSP residency counters */
53 #endif
54 };
55
56 #if CONFIG_DSP_RESIDENCY_COUNTERS
57 /**
58 * \brief DSP residency counters
59 * R0, R1, R2 are DSP residency counters which can be used differently
60 * based on platform implementation.
61 * In general R0 is the highest power consumption state while R2 is
62 * the lowest power consumption state. See platform specific pm_runtime.h
63 * for the platform HW specific mapping.
64 */
65 enum dsp_r_state {
66 r0_r_state = 0,
67 r1_r_state,
68 r2_r_state
69 };
70
71 /** \brief Diagnostic DSP residency counters data */
72 struct r_counters_data {
73 enum dsp_r_state cur_r_state; /**< current dsp_r_state */
74 uint64_t ts; /**< dsp_r_state timestamp */
75 };
76 #endif
77
78 /**
79 * \brief Initializes runtime power management.
80 */
81 void pm_runtime_init(struct sof *sof);
82
83 /**
84 * \brief Retrieves power management resource (async).
85 *
86 * \param[in] context Type of power management context.
87 * \param[in] index Index of the device.
88 */
89 void pm_runtime_get(enum pm_runtime_context context, uint32_t index);
90
91 /**
92 * \brief Retrieves power management resource.
93 *
94 * \param[in] context Type of power management context.
95 * \param[in] index Index of the device.
96 */
97 void pm_runtime_get_sync(enum pm_runtime_context context, uint32_t index);
98
99 /**
100 * \brief Releases power management resource (async).
101 *
102 * \param[in] context Type of power management context.
103 * \param[in] index Index of the device.
104 */
105 void pm_runtime_put(enum pm_runtime_context context, uint32_t index);
106
107 /**
108 * \brief Releases power management resource.
109 *
110 * \param[in] context Type of power management context.
111 * \param[in] index Index of the device.
112 */
113 void pm_runtime_put_sync(enum pm_runtime_context context, uint32_t index);
114
115 /**
116 * \brief Enables power management operations for the resource.
117 *
118 * \param[in] context Type of power management context.
119 * \param[in] index Index of the device.
120 */
121 void pm_runtime_enable(enum pm_runtime_context context, uint32_t index);
122
123 /**
124 * \brief Disables power management operations for the resource.
125 *
126 * \param[in] context Type of power management context.
127 * \param[in] index Index of the device.
128 */
129 void pm_runtime_disable(enum pm_runtime_context context, uint32_t index);
130
131 /**
132 * \brief Reports state of the power managed resource.
133 *
134 * @param context Type of power management context.
135 * @param index Index of the resource.
136 *
137 * @return true if the resource is active or pm disabled, false otherwise.
138 */
139 bool pm_runtime_is_active(enum pm_runtime_context context, uint32_t index);
140
141 /**
142 * \brief Retrieves pointer to runtime power management data.
143 *
144 * @return Runtime power management data pointer.
145 */
pm_runtime_data_get(void)146 static inline struct pm_runtime_data *pm_runtime_data_get(void)
147 {
148 return sof_get()->prd;
149 }
150
151 #if CONFIG_DSP_RESIDENCY_COUNTERS
152 /**
153 * \brief Initializes DSP residency counters.
154 *
155 * \param[in] context Type of power management context.
156 */
157 void init_dsp_r_state(enum dsp_r_state);
158
159 /**
160 * \brief Reports DSP residency state.
161 *
162 * \param[in] new state
163 */
164 void report_dsp_r_state(enum dsp_r_state);
165
166 /**
167 * \brief Retrieves current DSP residency state.
168 *
169 * @return active DSP residency state
170 */
171 enum dsp_r_state get_dsp_r_state(void);
172 #endif
173
174 /** @}*/
175
176 #endif /* __SOF_LIB_PM_RUNTIME_H__ */
177
