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soundwire: Add Master and Slave port programming

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Master and Slave port registers need to be programmed for each port
used in a stream. Add the helpers for port register programming.

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 18:38:17 +05:30
committed by Vinod Koul
parent bbe7379d80
commit f8101c74aa
3 changed files with 312 additions and 1 deletions
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47
include/linux/soundwire/sdw.h
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@@ -367,7 +367,30 @@ struct sdw_slave_intr_status {
};
/**
* struct sdw_slave_ops - Slave driver callback ops
* sdw_reg_bank - SoundWire register banks
* @SDW_BANK0: Soundwire register bank 0
* @SDW_BANK1: Soundwire register bank 1
*/
enum sdw_reg_bank {
SDW_BANK0,
SDW_BANK1,
};
/**
* struct sdw_bus_params: Structure holding bus configuration
*
* @curr_bank: Current bank in use (BANK0/BANK1)
* @next_bank: Next bank to use (BANK0/BANK1). next_bank will always be
* set to !curr_bank
*/
struct sdw_bus_params {
enum sdw_reg_bank curr_bank;
enum sdw_reg_bank next_bank;
};
/**
* struct sdw_slave_ops: Slave driver callback ops
*
* @read_prop: Read Slave properties
* @interrupt_callback: Device interrupt notification (invoked in thread
* context)
@@ -482,6 +505,24 @@ struct sdw_transport_params {
unsigned int lane_ctrl;
};
/**
* struct sdw_master_port_ops: Callback functions from bus to Master
* driver to set Master Data ports.
*
* @dpn_set_port_params: Set the Port parameters for the Master Port.
* Mandatory callback
* @dpn_set_port_transport_params: Set transport parameters for the Master
* Port. Mandatory callback
*/
struct sdw_master_port_ops {
int (*dpn_set_port_params)(struct sdw_bus *bus,
struct sdw_port_params *port_params,
unsigned int bank);
int (*dpn_set_port_transport_params)(struct sdw_bus *bus,
struct sdw_transport_params *transport_params,
enum sdw_reg_bank bank);
};
struct sdw_msg;
/**
@@ -525,6 +566,8 @@ struct sdw_master_ops {
* @bus_lock: bus lock
* @msg_lock: message lock
* @ops: Master callback ops
* @port_ops: Master port callback ops
* @params: Current bus parameters
* @prop: Master properties
* @m_rt_list: List of Master instance of all stream(s) running on Bus. This
* is used to compute and program bus bandwidth, clock, frame shape,
@@ -540,6 +583,8 @@ struct sdw_bus {
struct mutex bus_lock;
struct mutex msg_lock;
const struct sdw_master_ops *ops;
const struct sdw_master_port_ops *port_ops;
struct sdw_bus_params params;
struct sdw_master_prop prop;
struct list_head m_rt_list;
struct sdw_defer defer_msg;