forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
217 lines
6.2 KiB
217 lines
6.2 KiB
/* 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 |
|
#define DEFAULT_PROBE_TIMEOUT 2000 |
|
|
|
u64 sdw_dmi_override_adr(struct sdw_bus *bus, u64 addr); |
|
|
|
#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 |
|
|
|
int sdw_of_find_slaves(struct sdw_bus *bus); |
|
void sdw_extract_slave_id(struct sdw_bus *bus, |
|
u64 addr, struct sdw_slave_id *id); |
|
int sdw_slave_add(struct sdw_bus *bus, struct sdw_slave_id *id, |
|
struct fwnode_handle *fwnode); |
|
int sdw_master_device_add(struct sdw_bus *bus, struct device *parent, |
|
struct fwnode_handle *fwnode); |
|
int sdw_master_device_del(struct sdw_bus *bus); |
|
|
|
#ifdef CONFIG_DEBUG_FS |
|
void sdw_bus_debugfs_init(struct sdw_bus *bus); |
|
void sdw_bus_debugfs_exit(struct sdw_bus *bus); |
|
void sdw_slave_debugfs_init(struct sdw_slave *slave); |
|
void sdw_slave_debugfs_exit(struct sdw_slave *slave); |
|
void sdw_debugfs_init(void); |
|
void sdw_debugfs_exit(void); |
|
#else |
|
static inline void sdw_bus_debugfs_init(struct sdw_bus *bus) {} |
|
static inline void sdw_bus_debugfs_exit(struct sdw_bus *bus) {} |
|
static inline void sdw_slave_debugfs_init(struct sdw_slave *slave) {} |
|
static inline void sdw_slave_debugfs_exit(struct sdw_slave *slave) {} |
|
static inline void sdw_debugfs_init(void) {} |
|
static inline void sdw_debugfs_exit(void) {} |
|
#endif |
|
|
|
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 |
|
#define SDW_STRM_RATE_GROUPING 1 |
|
|
|
extern int sdw_rows[SDW_FRAME_ROWS]; |
|
extern int sdw_cols[SDW_FRAME_COLS]; |
|
|
|
int sdw_find_row_index(int row); |
|
int sdw_find_col_index(int col); |
|
|
|
/** |
|
* 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); |
|
|
|
/* Retrieve and return channel count from channel mask */ |
|
static inline int sdw_ch_mask_to_ch(int ch_mask) |
|
{ |
|
int c = 0; |
|
|
|
for (c = 0; ch_mask; ch_mask >>= 1) |
|
c += ch_mask & 1; |
|
|
|
return c; |
|
} |
|
|
|
/* Fill transport parameter data structure */ |
|
static inline void sdw_fill_xport_params(struct sdw_transport_params *params, |
|
int port_num, bool grp_ctrl_valid, |
|
int grp_ctrl, int sample_int, |
|
int off1, int off2, |
|
int hstart, int hstop, |
|
int pack_mode, int lane_ctrl) |
|
{ |
|
params->port_num = port_num; |
|
params->blk_grp_ctrl_valid = grp_ctrl_valid; |
|
params->blk_grp_ctrl = grp_ctrl; |
|
params->sample_interval = sample_int; |
|
params->offset1 = off1; |
|
params->offset2 = off2; |
|
params->hstart = hstart; |
|
params->hstop = hstop; |
|
params->blk_pkg_mode = pack_mode; |
|
params->lane_ctrl = lane_ctrl; |
|
} |
|
|
|
/* Fill port parameter data structure */ |
|
static inline void sdw_fill_port_params(struct sdw_port_params *params, |
|
int port_num, int bps, |
|
int flow_mode, int data_mode) |
|
{ |
|
params->num = port_num; |
|
params->bps = bps; |
|
params->flow_mode = flow_mode; |
|
params->data_mode = data_mode; |
|
} |
|
|
|
/* broadcast read/write for tests */ |
|
int sdw_bread_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr); |
|
int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value); |
|
|
|
/* |
|
* At the moment we only track Master-initiated hw_reset. |
|
* Additional fields can be added as needed |
|
*/ |
|
#define SDW_UNATTACH_REQUEST_MASTER_RESET BIT(0) |
|
|
|
void sdw_clear_slave_status(struct sdw_bus *bus, u32 request); |
|
int sdw_slave_modalias(const struct sdw_slave *slave, char *buf, size_t size); |
|
|
|
#endif /* __SDW_BUS_H */
|
|
|