mirror of https://gitee.com/openkylin/linux.git
148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
|
|
// Copyright(c) 2015-17 Intel Corporation.
|
|
|
|
#ifndef __SDW_BUS_H
|
|
#define __SDW_BUS_H
|
|
|
|
#define DEFAULT_BANK_SWITCH_TIMEOUT 3000
|
|
|
|
#if IS_ENABLED(CONFIG_ACPI)
|
|
int sdw_acpi_find_slaves(struct sdw_bus *bus);
|
|
#else
|
|
static inline int sdw_acpi_find_slaves(struct sdw_bus *bus)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
#endif
|
|
|
|
void sdw_extract_slave_id(struct sdw_bus *bus,
|
|
u64 addr, struct sdw_slave_id *id);
|
|
|
|
enum {
|
|
SDW_MSG_FLAG_READ = 0,
|
|
SDW_MSG_FLAG_WRITE,
|
|
};
|
|
|
|
/**
|
|
* struct sdw_msg - Message structure
|
|
* @addr: Register address accessed in the Slave
|
|
* @len: number of messages
|
|
* @dev_num: Slave device number
|
|
* @addr_page1: SCP address page 1 Slave register
|
|
* @addr_page2: SCP address page 2 Slave register
|
|
* @flags: transfer flags, indicate if xfer is read or write
|
|
* @buf: message data buffer
|
|
* @ssp_sync: Send message at SSP (Stream Synchronization Point)
|
|
* @page: address requires paging
|
|
*/
|
|
struct sdw_msg {
|
|
u16 addr;
|
|
u16 len;
|
|
u8 dev_num;
|
|
u8 addr_page1;
|
|
u8 addr_page2;
|
|
u8 flags;
|
|
u8 *buf;
|
|
bool ssp_sync;
|
|
bool page;
|
|
};
|
|
|
|
#define SDW_DOUBLE_RATE_FACTOR 2
|
|
|
|
extern int rows[SDW_FRAME_ROWS];
|
|
extern int cols[SDW_FRAME_COLS];
|
|
|
|
/**
|
|
* sdw_port_runtime: Runtime port parameters for Master or Slave
|
|
*
|
|
* @num: Port number. For audio streams, valid port number ranges from
|
|
* [1,14]
|
|
* @ch_mask: Channel mask
|
|
* @transport_params: Transport parameters
|
|
* @port_params: Port parameters
|
|
* @port_node: List node for Master or Slave port_list
|
|
*
|
|
* SoundWire spec has no mention of ports for Master interface but the
|
|
* concept is logically extended.
|
|
*/
|
|
struct sdw_port_runtime {
|
|
int num;
|
|
int ch_mask;
|
|
struct sdw_transport_params transport_params;
|
|
struct sdw_port_params port_params;
|
|
struct list_head port_node;
|
|
};
|
|
|
|
/**
|
|
* sdw_slave_runtime: Runtime Stream parameters for Slave
|
|
*
|
|
* @slave: Slave handle
|
|
* @direction: Data direction for Slave
|
|
* @ch_count: Number of channels handled by the Slave for
|
|
* this stream
|
|
* @m_rt_node: sdw_master_runtime list node
|
|
* @port_list: List of Slave Ports configured for this stream
|
|
*/
|
|
struct sdw_slave_runtime {
|
|
struct sdw_slave *slave;
|
|
enum sdw_data_direction direction;
|
|
unsigned int ch_count;
|
|
struct list_head m_rt_node;
|
|
struct list_head port_list;
|
|
};
|
|
|
|
/**
|
|
* sdw_master_runtime: Runtime stream parameters for Master
|
|
*
|
|
* @bus: Bus handle
|
|
* @stream: Stream runtime handle
|
|
* @direction: Data direction for Master
|
|
* @ch_count: Number of channels handled by the Master for
|
|
* this stream, can be zero.
|
|
* @slave_rt_list: Slave runtime list
|
|
* @port_list: List of Master Ports configured for this stream, can be zero.
|
|
* @stream_node: sdw_stream_runtime master_list node
|
|
* @bus_node: sdw_bus m_rt_list node
|
|
*/
|
|
struct sdw_master_runtime {
|
|
struct sdw_bus *bus;
|
|
struct sdw_stream_runtime *stream;
|
|
enum sdw_data_direction direction;
|
|
unsigned int ch_count;
|
|
struct list_head slave_rt_list;
|
|
struct list_head port_list;
|
|
struct list_head stream_node;
|
|
struct list_head bus_node;
|
|
};
|
|
|
|
struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave,
|
|
enum sdw_data_direction direction,
|
|
unsigned int port_num);
|
|
int sdw_configure_dpn_intr(struct sdw_slave *slave, int port,
|
|
bool enable, int mask);
|
|
|
|
int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg);
|
|
int sdw_transfer_defer(struct sdw_bus *bus, struct sdw_msg *msg,
|
|
struct sdw_defer *defer);
|
|
|
|
#define SDW_READ_INTR_CLEAR_RETRY 10
|
|
|
|
int sdw_fill_msg(struct sdw_msg *msg, struct sdw_slave *slave,
|
|
u32 addr, size_t count, u16 dev_num, u8 flags, u8 *buf);
|
|
|
|
/* Read-Modify-Write Slave register */
|
|
static inline int
|
|
sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
|
|
{
|
|
int tmp;
|
|
|
|
tmp = sdw_read(slave, addr);
|
|
if (tmp < 0)
|
|
return tmp;
|
|
|
|
tmp = (tmp & ~mask) | val;
|
|
return sdw_write(slave, addr, tmp);
|
|
}
|
|
|
|
#endif /* __SDW_BUS_H */
|