diff options
Diffstat (limited to 'drivers/soundwire/cadence_master.h')
| -rw-r--r-- | drivers/soundwire/cadence_master.h | 69 |
1 files changed, 56 insertions, 13 deletions
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 595d72c15d97..9373426c7f63 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -8,6 +8,14 @@ #define SDW_CADENCE_GSYNC_KHZ 4 /* 4 kHz */ #define SDW_CADENCE_GSYNC_HZ (SDW_CADENCE_GSYNC_KHZ * 1000) +/* + * The Cadence IP supports up to 32 entries in the FIFO, though implementations + * can configure the IP to have a smaller FIFO. + */ +#define CDNS_MCP_IP_MAX_CMD_LEN 32 + +#define SDW_CADENCE_MCP_IP_OFFSET 0x4000 + /** * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance * @@ -70,7 +78,7 @@ struct sdw_cdns_stream_config { }; /** - * struct sdw_cdns_dma_data: Cadence DMA data + * struct sdw_cdns_dai_runtime: Cadence DAI runtime data * * @name: SoundWire stream name * @stream: stream runtime @@ -78,20 +86,20 @@ struct sdw_cdns_stream_config { * @bus: Bus handle * @stream_type: Stream type * @link_id: Master link id - * @hw_params: hw_params to be applied in .prepare step * @suspended: status set when suspended, to be used in .prepare * @paused: status set in .trigger, to be used in suspend + * @direction: stream direction */ -struct sdw_cdns_dma_data { +struct sdw_cdns_dai_runtime { char *name; struct sdw_stream_runtime *stream; struct sdw_cdns_pdi *pdi; struct sdw_bus *bus; enum sdw_stream_type stream_type; int link_id; - struct snd_pcm_hw_params *hw_params; bool suspended; bool paused; + int direction; }; /** @@ -99,24 +107,33 @@ struct sdw_cdns_dma_data { * @dev: Linux device * @bus: Bus handle * @instance: instance number + * @ip_offset: version-dependent offset to access IP_MCP registers and fields * @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 * @registers: Cadence registers * @link_up: Link status * @msg_count: Messages sent on bus + * @dai_runtime_array: runtime context for each allocated DAI. + * @status_update_lock: protect concurrency between interrupt-based and delayed work + * status update */ struct sdw_cdns { struct device *dev; struct sdw_bus bus; unsigned int instance; - u32 response_buf[0x80]; + u32 ip_offset; + + /* + * The datasheet says the RX FIFO AVAIL can be 2 entries more + * than the FIFO capacity, so allow for this. + */ + u32 response_buf[CDNS_MCP_IP_MAX_CMD_LEN + 2]; + struct completion tx_complete; - struct sdw_defer *defer; struct sdw_cdns_port *ports; int num_ports; @@ -133,8 +150,13 @@ struct sdw_cdns { bool interrupt_enabled; struct work_struct work; + struct delayed_work attach_dwork; struct list_head list; + + struct sdw_cdns_dai_runtime **dai_runtime_array; + + struct mutex status_update_lock; /* add mutual exclusion to sdw_handle_slave_status() */ }; #define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus) @@ -142,11 +164,11 @@ struct sdw_cdns { /* 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_soft_reset(struct sdw_cdns *cdns); int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); @@ -168,14 +190,12 @@ void sdw_cdns_config_stream(struct sdw_cdns *cdns, u32 ch, u32 dir, struct sdw_cdns_pdi *pdi); 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); +cdns_xfer_msg_defer(struct sdw_bus *bus); + +u32 cdns_read_ping_status(struct sdw_bus *bus); int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params); @@ -185,4 +205,27 @@ int cdns_set_sdw_stream(struct snd_soc_dai *dai, void sdw_cdns_check_self_clearing_bits(struct sdw_cdns *cdns, const char *string, bool initial_delay, int reset_iterations); +void sdw_cdns_config_update(struct sdw_cdns *cdns); +int sdw_cdns_config_update_set_wait(struct sdw_cdns *cdns); + +/* SoundWire BPT/BRA helpers to format data */ +int sdw_cdns_bpt_find_buffer_sizes(int command, /* 0: write, 1: read */ + int row, int col, unsigned int data_bytes, + unsigned int requested_bytes_per_frame, + unsigned int *data_per_frame, unsigned int *pdi0_buffer_size, + unsigned int *pdi1_buffer_size, unsigned int *num_frames); + +int sdw_cdns_prepare_write_dma_buffer(u8 dev_num, u32 start_register, u8 *data, int data_size, + int data_per_frame, u8 *dma_buffer, int dma_buffer_size, + int *dma_buffer_total_bytes); + +int sdw_cdns_prepare_read_dma_buffer(u8 dev_num, u32 start_register, int data_size, + int data_per_frame, u8 *dma_buffer, int dma_buffer_size, + int *dma_buffer_total_bytes); + +int sdw_cdns_check_write_response(struct device *dev, u8 *dma_buffer, + int dma_buffer_size, int num_frames); + +int sdw_cdns_check_read_response(struct device *dev, u8 *dma_buffer, int dma_buffer_size, + u8 *buffer, int buffer_size, int num_frames, int data_per_frame); #endif /* __SDW_CADENCE_H */ |