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1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2/* Copyright(c) 2015-17 Intel Corporation. */
3#include <sound/soc.h>
4
5#ifndef __SDW_CADENCE_H
6#define __SDW_CADENCE_H
7
8#define SDW_CADENCE_GSYNC_KHZ 4 /* 4 kHz */
9#define SDW_CADENCE_GSYNC_HZ (SDW_CADENCE_GSYNC_KHZ * 1000)
10
11/**
12 * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
13 *
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
20 * @type: stream type, PDM or PCM
21 */
22struct sdw_cdns_pdi {
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
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 */
46struct 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
65 * @pdm_bd: number of bidirectional PDM streams supported
66 * @pdm_in: number of input PDM streams supported
67 * @pdm_out: number of output PDM streams supported
68 */
69struct sdw_cdns_stream_config {
70 unsigned int pcm_bd;
71 unsigned int pcm_in;
72 unsigned int pcm_out;
73 unsigned int pdm_bd;
74 unsigned int pdm_in;
75 unsigned int pdm_out;
76};
77
78/**
79 * struct sdw_cdns_dma_data: Cadence DMA data
80 *
81 * @name: SoundWire stream name
82 * @stream: stream runtime
83 * @pdi: PDI used for this dai
84 * @bus: Bus handle
85 * @stream_type: Stream type
86 * @link_id: Master link id
87 */
88struct sdw_cdns_dma_data {
89 char *name;
90 struct sdw_stream_runtime *stream;
91 struct sdw_cdns_pdi *pdi;
92 struct sdw_bus *bus;
93 enum sdw_stream_type stream_type;
94 int link_id;
95};
96
97/**
98 * struct sdw_cdns - Cadence driver context
99 * @dev: Linux device
100 * @bus: Bus handle
101 * @instance: instance number
102 * @response_buf: SoundWire response buffer
103 * @tx_complete: Tx completion
104 * @defer: Defer pointer
105 * @ports: Data ports
106 * @num_ports: Total number of data ports
107 * @pcm: PCM streams
108 * @pdm: PDM streams
109 * @registers: Cadence registers
110 * @link_up: Link status
111 * @msg_count: Messages sent on bus
112 */
113struct sdw_cdns {
114 struct device *dev;
115 struct sdw_bus bus;
116 unsigned int instance;
117
118 u32 response_buf[0x80];
119 struct completion tx_complete;
120 struct sdw_defer *defer;
121
122 struct sdw_cdns_port *ports;
123 int num_ports;
124
125 struct sdw_cdns_streams pcm;
126 struct sdw_cdns_streams pdm;
127
128 void __iomem *registers;
129
130 bool link_up;
131 unsigned int msg_count;
132
133 struct work_struct work;
134
135 struct list_head list;
136};
137
138#define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus)
139
140/* Exported symbols */
141
142int sdw_cdns_probe(struct sdw_cdns *cdns);
143extern struct sdw_master_ops sdw_cdns_master_ops;
144
145irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
146irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
147
148int sdw_cdns_init(struct sdw_cdns *cdns);
149int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
150 struct sdw_cdns_stream_config config);
151int sdw_cdns_exit_reset(struct sdw_cdns *cdns);
152int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
153
154bool sdw_cdns_is_clock_stop(struct sdw_cdns *cdns);
155int sdw_cdns_clock_stop(struct sdw_cdns *cdns, bool block_wake);
156int sdw_cdns_clock_restart(struct sdw_cdns *cdns, bool bus_reset);
157
158#ifdef CONFIG_DEBUG_FS
159void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root);
160#endif
161
162struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns,
163 struct sdw_cdns_streams *stream,
164 u32 ch, u32 dir, int dai_id);
165void sdw_cdns_config_stream(struct sdw_cdns *cdns,
166 u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
167
168enum sdw_command_response
169cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
170
171enum sdw_command_response
172cdns_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg);
173
174enum sdw_command_response
175cdns_xfer_msg_defer(struct sdw_bus *bus,
176 struct sdw_msg *msg, struct sdw_defer *defer);
177
178enum sdw_command_response
179cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
180
181int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
182
183int cdns_set_sdw_stream(struct snd_soc_dai *dai,
184 void *stream, bool pcm, int direction);
185#endif /* __SDW_CADENCE_H */
1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2/* Copyright(c) 2015-17 Intel Corporation. */
3#include <sound/soc.h>
4
5#ifndef __SDW_CADENCE_H
6#define __SDW_CADENCE_H
7
8#define SDW_CADENCE_GSYNC_KHZ 4 /* 4 kHz */
9#define SDW_CADENCE_GSYNC_HZ (SDW_CADENCE_GSYNC_KHZ * 1000)
10
11/**
12 * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
13 *
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
20 * @type: stream type, (only PCM supported)
21 */
22struct sdw_cdns_pdi {
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
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 */
46struct 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
65 */
66struct sdw_cdns_stream_config {
67 unsigned int pcm_bd;
68 unsigned int pcm_in;
69 unsigned int pcm_out;
70};
71
72/**
73 * struct sdw_cdns_dai_runtime: Cadence DAI runtime data
74 *
75 * @name: SoundWire stream name
76 * @stream: stream runtime
77 * @pdi: PDI used for this dai
78 * @bus: Bus handle
79 * @stream_type: Stream type
80 * @link_id: Master link id
81 * @hw_params: hw_params to be applied in .prepare step
82 * @suspended: status set when suspended, to be used in .prepare
83 * @paused: status set in .trigger, to be used in suspend
84 * @direction: stream direction
85 */
86struct sdw_cdns_dai_runtime {
87 char *name;
88 struct sdw_stream_runtime *stream;
89 struct sdw_cdns_pdi *pdi;
90 struct sdw_bus *bus;
91 enum sdw_stream_type stream_type;
92 int link_id;
93 struct snd_pcm_hw_params *hw_params;
94 bool suspended;
95 bool paused;
96 int direction;
97};
98
99/**
100 * struct sdw_cdns - Cadence driver context
101 * @dev: Linux device
102 * @bus: Bus handle
103 * @instance: instance number
104 * @response_buf: SoundWire response buffer
105 * @tx_complete: Tx completion
106 * @defer: Defer pointer
107 * @ports: Data ports
108 * @num_ports: Total number of data ports
109 * @pcm: PCM streams
110 * @registers: Cadence registers
111 * @link_up: Link status
112 * @msg_count: Messages sent on bus
113 * @dai_runtime_array: runtime context for each allocated DAI.
114 */
115struct sdw_cdns {
116 struct device *dev;
117 struct sdw_bus bus;
118 unsigned int instance;
119
120 u32 response_buf[0x80];
121 struct completion tx_complete;
122 struct sdw_defer *defer;
123
124 struct sdw_cdns_port *ports;
125 int num_ports;
126
127 struct sdw_cdns_streams pcm;
128
129 int pdi_loopback_source;
130 int pdi_loopback_target;
131
132 void __iomem *registers;
133
134 bool link_up;
135 unsigned int msg_count;
136 bool interrupt_enabled;
137
138 struct work_struct work;
139
140 struct list_head list;
141
142 struct sdw_cdns_dai_runtime **dai_runtime_array;
143};
144
145#define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus)
146
147/* Exported symbols */
148
149int sdw_cdns_probe(struct sdw_cdns *cdns);
150extern struct sdw_master_ops sdw_cdns_master_ops;
151
152irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
153irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
154
155int sdw_cdns_init(struct sdw_cdns *cdns);
156int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
157 struct sdw_cdns_stream_config config);
158int sdw_cdns_exit_reset(struct sdw_cdns *cdns);
159int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
160
161bool sdw_cdns_is_clock_stop(struct sdw_cdns *cdns);
162int sdw_cdns_clock_stop(struct sdw_cdns *cdns, bool block_wake);
163int sdw_cdns_clock_restart(struct sdw_cdns *cdns, bool bus_reset);
164
165#ifdef CONFIG_DEBUG_FS
166void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root);
167#endif
168
169struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns,
170 struct sdw_cdns_streams *stream,
171 u32 ch, u32 dir, int dai_id);
172void sdw_cdns_config_stream(struct sdw_cdns *cdns,
173 u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
174
175enum sdw_command_response
176cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
177
178enum sdw_command_response
179cdns_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg);
180
181enum sdw_command_response
182cdns_xfer_msg_defer(struct sdw_bus *bus,
183 struct sdw_msg *msg, struct sdw_defer *defer);
184
185u32 cdns_read_ping_status(struct sdw_bus *bus);
186
187int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
188
189int cdns_set_sdw_stream(struct snd_soc_dai *dai,
190 void *stream, int direction);
191
192void sdw_cdns_check_self_clearing_bits(struct sdw_cdns *cdns, const char *string,
193 bool initial_delay, int reset_iterations);
194
195#endif /* __SDW_CADENCE_H */