200 lines
5.0 KiB
C
200 lines
5.0 KiB
C
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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// Copyright(c) 2015-17 Intel Corporation.
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#include <sound/soc.h>
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#ifndef __SDW_CADENCE_H
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#define __SDW_CADENCE_H
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/**
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* struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
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*
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* @assigned: pdi assigned
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* @num: pdi number
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* @intel_alh_id: link identifier
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* @l_ch_num: low channel for PDI
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* @h_ch_num: high channel for PDI
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* @ch_count: total channel count for PDI
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* @dir: data direction
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* @type: stream type, PDM or PCM
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*/
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struct sdw_cdns_pdi {
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bool assigned;
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int num;
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int intel_alh_id;
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int l_ch_num;
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int h_ch_num;
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int ch_count;
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enum sdw_data_direction dir;
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enum sdw_stream_type type;
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};
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/**
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* struct sdw_cdns_port: Cadence port structure
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*
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* @num: port number
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* @assigned: port assigned
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* @ch: channel count
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* @direction: data port direction
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* @pdi: pdi for this port
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*/
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struct sdw_cdns_port {
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unsigned int num;
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bool assigned;
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unsigned int ch;
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enum sdw_data_direction direction;
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struct sdw_cdns_pdi *pdi;
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};
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/**
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* struct sdw_cdns_streams: Cadence stream data structure
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*
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* @num_bd: number of bidirectional streams
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* @num_in: number of input streams
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* @num_out: number of output streams
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* @num_ch_bd: number of bidirectional stream channels
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* @num_ch_bd: number of input stream channels
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* @num_ch_bd: number of output stream channels
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* @num_pdi: total number of PDIs
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* @bd: bidirectional streams
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* @in: input streams
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* @out: output streams
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*/
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struct sdw_cdns_streams {
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unsigned int num_bd;
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unsigned int num_in;
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unsigned int num_out;
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unsigned int num_ch_bd;
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unsigned int num_ch_in;
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unsigned int num_ch_out;
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unsigned int num_pdi;
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struct sdw_cdns_pdi *bd;
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struct sdw_cdns_pdi *in;
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struct sdw_cdns_pdi *out;
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};
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/**
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* struct sdw_cdns_stream_config: stream configuration
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*
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* @pcm_bd: number of bidirectional PCM streams supported
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* @pcm_in: number of input PCM streams supported
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* @pcm_out: number of output PCM streams supported
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* @pdm_bd: number of bidirectional PDM streams supported
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* @pdm_in: number of input PDM streams supported
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* @pdm_out: number of output PDM streams supported
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*/
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struct sdw_cdns_stream_config {
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unsigned int pcm_bd;
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unsigned int pcm_in;
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unsigned int pcm_out;
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unsigned int pdm_bd;
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unsigned int pdm_in;
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unsigned int pdm_out;
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};
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/**
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* struct sdw_cdns_dma_data: Cadence DMA data
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*
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* @name: SoundWire stream name
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* @nr_ports: Number of ports
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* @port: Ports
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* @bus: Bus handle
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* @stream_type: Stream type
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* @link_id: Master link id
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*/
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struct sdw_cdns_dma_data {
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char *name;
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struct sdw_stream_runtime *stream;
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int nr_ports;
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struct sdw_cdns_port **port;
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struct sdw_bus *bus;
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enum sdw_stream_type stream_type;
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int link_id;
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};
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/**
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* struct sdw_cdns - Cadence driver context
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* @dev: Linux device
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* @bus: Bus handle
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* @instance: instance number
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* @response_buf: SoundWire response buffer
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* @tx_complete: Tx completion
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* @defer: Defer pointer
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* @ports: Data ports
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* @num_ports: Total number of data ports
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* @pcm: PCM streams
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* @pdm: PDM streams
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* @registers: Cadence registers
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* @link_up: Link status
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* @msg_count: Messages sent on bus
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*/
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struct sdw_cdns {
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struct device *dev;
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struct sdw_bus bus;
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unsigned int instance;
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u32 response_buf[0x80];
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struct completion tx_complete;
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struct sdw_defer *defer;
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struct sdw_cdns_port *ports;
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int num_ports;
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struct sdw_cdns_streams pcm;
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struct sdw_cdns_streams pdm;
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void __iomem *registers;
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bool link_up;
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unsigned int msg_count;
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};
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#define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus)
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/* Exported symbols */
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int sdw_cdns_probe(struct sdw_cdns *cdns);
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extern struct sdw_master_ops sdw_cdns_master_ops;
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irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
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irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
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int sdw_cdns_init(struct sdw_cdns *cdns);
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int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
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struct sdw_cdns_stream_config config);
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int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
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int sdw_cdns_get_stream(struct sdw_cdns *cdns,
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struct sdw_cdns_streams *stream,
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u32 ch, u32 dir);
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int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
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struct sdw_cdns_streams *stream,
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struct sdw_cdns_port *port, u32 ch, u32 dir);
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void sdw_cdns_config_stream(struct sdw_cdns *cdns, struct sdw_cdns_port *port,
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u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
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void sdw_cdns_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai);
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int sdw_cdns_pcm_set_stream(struct snd_soc_dai *dai,
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void *stream, int direction);
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int sdw_cdns_pdm_set_stream(struct snd_soc_dai *dai,
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void *stream, int direction);
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enum sdw_command_response
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cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
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enum sdw_command_response
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cdns_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg);
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enum sdw_command_response
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cdns_xfer_msg_defer(struct sdw_bus *bus,
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struct sdw_msg *msg, struct sdw_defer *defer);
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enum sdw_command_response
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cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
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int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
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int cdns_set_sdw_stream(struct snd_soc_dai *dai,
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void *stream, bool pcm, int direction);
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#endif /* __SDW_CADENCE_H */
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