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1 | /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ |
2 | /* Copyright(c) 2015-17 Intel Corporation. */ | |
5d6b3c8b | 3 | #include <sound/soc.h> |
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4 | |
5 | #ifndef __SDW_CADENCE_H | |
6 | #define __SDW_CADENCE_H | |
7 | ||
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8 | #define SDW_CADENCE_GSYNC_KHZ 4 /* 4 kHz */ |
9 | #define SDW_CADENCE_GSYNC_HZ (SDW_CADENCE_GSYNC_KHZ * 1000) | |
10 | ||
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11 | /** |
12 | * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance | |
13 | * | |
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14 | * @num: pdi number |
15 | * @intel_alh_id: link identifier | |
16 | * @l_ch_num: low channel for PDI | |
17 | * @h_ch_num: high channel for PDI | |
18 | * @ch_count: total channel count for PDI | |
19 | * @dir: data direction | |
63a6aa96 | 20 | * @type: stream type, (only PCM supported) |
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21 | */ |
22 | struct sdw_cdns_pdi { | |
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23 | int num; |
24 | int intel_alh_id; | |
25 | int l_ch_num; | |
26 | int h_ch_num; | |
27 | int ch_count; | |
28 | enum sdw_data_direction dir; | |
29 | enum sdw_stream_type type; | |
30 | }; | |
31 | ||
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32 | /** |
33 | * struct sdw_cdns_streams: Cadence stream data structure | |
34 | * | |
35 | * @num_bd: number of bidirectional streams | |
36 | * @num_in: number of input streams | |
37 | * @num_out: number of output streams | |
38 | * @num_ch_bd: number of bidirectional stream channels | |
39 | * @num_ch_bd: number of input stream channels | |
40 | * @num_ch_bd: number of output stream channels | |
41 | * @num_pdi: total number of PDIs | |
42 | * @bd: bidirectional streams | |
43 | * @in: input streams | |
44 | * @out: output streams | |
45 | */ | |
46 | struct sdw_cdns_streams { | |
47 | unsigned int num_bd; | |
48 | unsigned int num_in; | |
49 | unsigned int num_out; | |
50 | unsigned int num_ch_bd; | |
51 | unsigned int num_ch_in; | |
52 | unsigned int num_ch_out; | |
53 | unsigned int num_pdi; | |
54 | struct sdw_cdns_pdi *bd; | |
55 | struct sdw_cdns_pdi *in; | |
56 | struct sdw_cdns_pdi *out; | |
57 | }; | |
58 | ||
59 | /** | |
60 | * struct sdw_cdns_stream_config: stream configuration | |
61 | * | |
62 | * @pcm_bd: number of bidirectional PCM streams supported | |
63 | * @pcm_in: number of input PCM streams supported | |
64 | * @pcm_out: number of output PCM streams supported | |
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65 | */ |
66 | struct sdw_cdns_stream_config { | |
67 | unsigned int pcm_bd; | |
68 | unsigned int pcm_in; | |
69 | unsigned int pcm_out; | |
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70 | }; |
71 | ||
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72 | /** |
73 | * struct sdw_cdns_dma_data: Cadence DMA data | |
74 | * | |
75 | * @name: SoundWire stream name | |
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76 | * @stream: stream runtime |
77 | * @pdi: PDI used for this dai | |
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78 | * @bus: Bus handle |
79 | * @stream_type: Stream type | |
80 | * @link_id: Master link id | |
a5a0239c BL |
81 | * @hw_params: hw_params to be applied in .prepare step |
82 | * @suspended: status set when suspended, to be used in .prepare | |
8ddeafb9 | 83 | * @paused: status set in .trigger, to be used in suspend |
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84 | */ |
85 | struct sdw_cdns_dma_data { | |
86 | char *name; | |
87 | struct sdw_stream_runtime *stream; | |
57a34790 | 88 | struct sdw_cdns_pdi *pdi; |
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89 | struct sdw_bus *bus; |
90 | enum sdw_stream_type stream_type; | |
91 | int link_id; | |
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92 | struct snd_pcm_hw_params *hw_params; |
93 | bool suspended; | |
8ddeafb9 | 94 | bool paused; |
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95 | }; |
96 | ||
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97 | /** |
98 | * struct sdw_cdns - Cadence driver context | |
99 | * @dev: Linux device | |
100 | * @bus: Bus handle | |
101 | * @instance: instance number | |
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102 | * @response_buf: SoundWire response buffer |
103 | * @tx_complete: Tx completion | |
104 | * @defer: Defer pointer | |
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105 | * @ports: Data ports |
106 | * @num_ports: Total number of data ports | |
107 | * @pcm: PCM streams | |
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108 | * @registers: Cadence registers |
109 | * @link_up: Link status | |
956baa19 | 110 | * @msg_count: Messages sent on bus |
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111 | */ |
112 | struct sdw_cdns { | |
113 | struct device *dev; | |
114 | struct sdw_bus bus; | |
115 | unsigned int instance; | |
116 | ||
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117 | u32 response_buf[0x80]; |
118 | struct completion tx_complete; | |
119 | struct sdw_defer *defer; | |
120 | ||
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121 | struct sdw_cdns_port *ports; |
122 | int num_ports; | |
123 | ||
124 | struct sdw_cdns_streams pcm; | |
07abeff1 | 125 | |
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126 | int pdi_loopback_source; |
127 | int pdi_loopback_target; | |
128 | ||
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129 | void __iomem *registers; |
130 | ||
131 | bool link_up; | |
956baa19 | 132 | unsigned int msg_count; |
d2068da5 | 133 | bool interrupt_enabled; |
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134 | |
135 | struct work_struct work; | |
136 | ||
137 | struct list_head list; | |
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138 | }; |
139 | ||
140 | #define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus) | |
141 | ||
142 | /* Exported symbols */ | |
143 | ||
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144 | int sdw_cdns_probe(struct sdw_cdns *cdns); |
145 | extern struct sdw_master_ops sdw_cdns_master_ops; | |
146 | ||
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147 | irqreturn_t sdw_cdns_irq(int irq, void *dev_id); |
148 | irqreturn_t sdw_cdns_thread(int irq, void *dev_id); | |
149 | ||
7b174f24 | 150 | int sdw_cdns_init(struct sdw_cdns *cdns); |
07abeff1 | 151 | int sdw_cdns_pdi_init(struct sdw_cdns *cdns, |
806a11f0 | 152 | struct sdw_cdns_stream_config config); |
49ea07d3 | 153 | int sdw_cdns_exit_reset(struct sdw_cdns *cdns); |
9e3d47fb | 154 | int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state); |
956baa19 | 155 | |
5a885c52 | 156 | bool sdw_cdns_is_clock_stop(struct sdw_cdns *cdns); |
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157 | int sdw_cdns_clock_stop(struct sdw_cdns *cdns, bool block_wake); |
158 | int sdw_cdns_clock_restart(struct sdw_cdns *cdns, bool bus_reset); | |
5a885c52 | 159 | |
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160 | #ifdef CONFIG_DEBUG_FS |
161 | void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); | |
162 | #endif | |
163 | ||
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164 | struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns, |
165 | struct sdw_cdns_streams *stream, | |
1b53385e | 166 | u32 ch, u32 dir, int dai_id); |
57a34790 | 167 | void sdw_cdns_config_stream(struct sdw_cdns *cdns, |
806a11f0 | 168 | u32 ch, u32 dir, struct sdw_cdns_pdi *pdi); |
5d6b3c8b | 169 | |
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170 | enum sdw_command_response |
171 | cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num); | |
172 | ||
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173 | enum sdw_command_response |
174 | cdns_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg); | |
2f52a517 | 175 | |
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176 | enum sdw_command_response |
177 | cdns_xfer_msg_defer(struct sdw_bus *bus, | |
806a11f0 | 178 | struct sdw_msg *msg, struct sdw_defer *defer); |
c91605f4 | 179 | |
07abeff1 | 180 | int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params); |
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181 | |
182 | int cdns_set_sdw_stream(struct snd_soc_dai *dai, | |
63a6aa96 | 183 | void *stream, int direction); |
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184 | |
185 | void sdw_cdns_check_self_clearing_bits(struct sdw_cdns *cdns, const char *string, | |
186 | bool initial_delay, int reset_iterations); | |
187 | ||
2f52a517 | 188 | #endif /* __SDW_CADENCE_H */ |