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soundwire: Add support for port management

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Add Soundwire port data structures and APIS for initialization
and release of ports.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Sanyog Kale
2018-04-26 18:38:13 +05:30
committed by Vinod Koul
parent 89e590535f
commit bbe7379d80
3 changed files with 234 additions and 2 deletions
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67
include/linux/soundwire/sdw.h
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@@ -26,6 +26,8 @@ struct sdw_slave;
#define SDW_MAX_DEVICES 11
#define SDW_VALID_PORT_RANGE(n) (n <= 14 && n >= 1)
/**
* enum sdw_slave_status - Slave status
* @SDW_SLAVE_UNATTACHED: Slave is not attached with the bus.
@@ -430,6 +432,56 @@ int sdw_handle_slave_status(struct sdw_bus *bus,
* SDW master structures and APIs
*/
/**
* struct sdw_port_params: Data Port parameters
*
* @num: Port number
* @bps: Word length of the Port
* @flow_mode: Port Data flow mode
* @data_mode: Test modes or normal mode
*
* This is used to program the Data Port based on Data Port stream
* parameters.
*/
struct sdw_port_params {
unsigned int num;
unsigned int bps;
unsigned int flow_mode;
unsigned int data_mode;
};
/**
* struct sdw_transport_params: Data Port Transport Parameters
*
* @blk_grp_ctrl_valid: Port implements block group control
* @num: Port number
* @blk_grp_ctrl: Block group control value
* @sample_interval: Sample interval
* @offset1: Blockoffset of the payload data
* @offset2: Blockoffset of the payload data
* @hstart: Horizontal start of the payload data
* @hstop: Horizontal stop of the payload data
* @blk_pkg_mode: Block per channel or block per port
* @lane_ctrl: Data lane Port uses for Data transfer. Currently only single
* data lane is supported in bus
*
* This is used to program the Data Port based on Data Port transport
* parameters. All these parameters are banked and can be modified
* during a bank switch without any artifacts in audio stream.
*/
struct sdw_transport_params {
bool blk_grp_ctrl_valid;
unsigned int port_num;
unsigned int blk_grp_ctrl;
unsigned int sample_interval;
unsigned int offset1;
unsigned int offset2;
unsigned int hstart;
unsigned int hstop;
unsigned int blk_pkg_mode;
unsigned int lane_ctrl;
};
struct sdw_msg;
/**
@@ -497,6 +549,17 @@ struct sdw_bus {
int sdw_add_bus_master(struct sdw_bus *bus);
void sdw_delete_bus_master(struct sdw_bus *bus);
/**
* sdw_port_config: Master or Slave Port configuration
*
* @num: Port number
* @ch_mask: channels mask for port
*/
struct sdw_port_config {
unsigned int num;
unsigned int ch_mask;
};
/**
* sdw_stream_config: Master or Slave stream configuration
*
@@ -569,9 +632,13 @@ struct sdw_stream_runtime *sdw_alloc_stream(char *stream_name);
void sdw_release_stream(struct sdw_stream_runtime *stream);
int sdw_stream_add_master(struct sdw_bus *bus,
struct sdw_stream_config *stream_config,
struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream);
int sdw_stream_add_slave(struct sdw_slave *slave,
struct sdw_stream_config *stream_config,
struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream);
int sdw_stream_remove_master(struct sdw_bus *bus,
struct sdw_stream_runtime *stream);