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 */ 22 struct 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 */ 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 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 */ 69 struct 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 */ 88 struct 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 */ 113 struct 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 }; 133 134 #define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus) 135 136 /* Exported symbols */ 137 138 int sdw_cdns_probe(struct sdw_cdns *cdns); 139 extern struct sdw_master_ops sdw_cdns_master_ops; 140 141 irqreturn_t sdw_cdns_irq(int irq, void *dev_id); 142 irqreturn_t sdw_cdns_thread(int irq, void *dev_id); 143 144 int sdw_cdns_init(struct sdw_cdns *cdns); 145 int sdw_cdns_pdi_init(struct sdw_cdns *cdns, 146 struct sdw_cdns_stream_config config); 147 int sdw_cdns_exit_reset(struct sdw_cdns *cdns); 148 int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state); 149 150 bool sdw_cdns_is_clock_stop(struct sdw_cdns *cdns); 151 int sdw_cdns_clock_stop(struct sdw_cdns *cdns, bool block_wake); 152 int sdw_cdns_clock_restart(struct sdw_cdns *cdns, bool bus_reset); 153 154 #ifdef CONFIG_DEBUG_FS 155 void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); 156 #endif 157 158 struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns, 159 struct sdw_cdns_streams *stream, 160 u32 ch, u32 dir, int dai_id); 161 void sdw_cdns_config_stream(struct sdw_cdns *cdns, 162 u32 ch, u32 dir, struct sdw_cdns_pdi *pdi); 163 164 enum sdw_command_response 165 cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num); 166 167 enum sdw_command_response 168 cdns_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg); 169 170 enum sdw_command_response 171 cdns_xfer_msg_defer(struct sdw_bus *bus, 172 struct sdw_msg *msg, struct sdw_defer *defer); 173 174 enum sdw_command_response 175 cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num); 176 177 int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params); 178 179 int cdns_set_sdw_stream(struct snd_soc_dai *dai, 180 void *stream, bool pcm, int direction); 181 #endif /* __SDW_CADENCE_H */ 182