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soundwire: cdns: Add port routines

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Add support for Cadence port management and implement
master port ops.

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:
Vinod Koul
2018-04-26 18:38:48 +05:30
parent c91605f489
commit 07abeff1ef
3 changed files with 344 additions and 0 deletions
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100
drivers/soundwire/cadence_master.h
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@@ -4,6 +4,92 @@
#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 - Cadence driver context
* @dev: Linux device
@@ -12,6 +98,10 @@
* @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
@@ -25,6 +115,12 @@ struct sdw_cdns {
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;
@@ -42,6 +138,8 @@ 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);
enum sdw_command_response
@@ -53,4 +151,6 @@ cdns_xfer_msg_defer(struct sdw_bus *bus,
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);
#endif /* __SDW_CADENCE_H */