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