1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2 /* Copyright(c) 2015-17 Intel Corporation. */
7 #define DEFAULT_BANK_SWITCH_TIMEOUT 3000
9 #if IS_ENABLED(CONFIG_ACPI)
10 int sdw_acpi_find_slaves(struct sdw_bus
*bus
);
12 static inline int sdw_acpi_find_slaves(struct sdw_bus
*bus
)
18 void sdw_extract_slave_id(struct sdw_bus
*bus
,
19 u64 addr
, struct sdw_slave_id
*id
);
22 SDW_MSG_FLAG_READ
= 0,
27 * struct sdw_msg - Message structure
28 * @addr: Register address accessed in the Slave
29 * @len: number of messages
30 * @dev_num: Slave device number
31 * @addr_page1: SCP address page 1 Slave register
32 * @addr_page2: SCP address page 2 Slave register
33 * @flags: transfer flags, indicate if xfer is read or write
34 * @buf: message data buffer
35 * @ssp_sync: Send message at SSP (Stream Synchronization Point)
36 * @page: address requires paging
50 #define SDW_DOUBLE_RATE_FACTOR 2
52 extern int rows
[SDW_FRAME_ROWS
];
53 extern int cols
[SDW_FRAME_COLS
];
56 * sdw_port_runtime: Runtime port parameters for Master or Slave
58 * @num: Port number. For audio streams, valid port number ranges from
60 * @ch_mask: Channel mask
61 * @transport_params: Transport parameters
62 * @port_params: Port parameters
63 * @port_node: List node for Master or Slave port_list
65 * SoundWire spec has no mention of ports for Master interface but the
66 * concept is logically extended.
68 struct sdw_port_runtime
{
71 struct sdw_transport_params transport_params
;
72 struct sdw_port_params port_params
;
73 struct list_head port_node
;
77 * sdw_slave_runtime: Runtime Stream parameters for Slave
79 * @slave: Slave handle
80 * @direction: Data direction for Slave
81 * @ch_count: Number of channels handled by the Slave for
83 * @m_rt_node: sdw_master_runtime list node
84 * @port_list: List of Slave Ports configured for this stream
86 struct sdw_slave_runtime
{
87 struct sdw_slave
*slave
;
88 enum sdw_data_direction direction
;
89 unsigned int ch_count
;
90 struct list_head m_rt_node
;
91 struct list_head port_list
;
95 * sdw_master_runtime: Runtime stream parameters for Master
98 * @stream: Stream runtime handle
99 * @direction: Data direction for Master
100 * @ch_count: Number of channels handled by the Master for
101 * this stream, can be zero.
102 * @slave_rt_list: Slave runtime list
103 * @port_list: List of Master Ports configured for this stream, can be zero.
104 * @stream_node: sdw_stream_runtime master_list node
105 * @bus_node: sdw_bus m_rt_list node
107 struct sdw_master_runtime
{
109 struct sdw_stream_runtime
*stream
;
110 enum sdw_data_direction direction
;
111 unsigned int ch_count
;
112 struct list_head slave_rt_list
;
113 struct list_head port_list
;
114 struct list_head stream_node
;
115 struct list_head bus_node
;
118 struct sdw_dpn_prop
*sdw_get_slave_dpn_prop(struct sdw_slave
*slave
,
119 enum sdw_data_direction direction
,
120 unsigned int port_num
);
121 int sdw_configure_dpn_intr(struct sdw_slave
*slave
, int port
,
122 bool enable
, int mask
);
124 int sdw_transfer(struct sdw_bus
*bus
, struct sdw_msg
*msg
);
125 int sdw_transfer_defer(struct sdw_bus
*bus
, struct sdw_msg
*msg
,
126 struct sdw_defer
*defer
);
128 #define SDW_READ_INTR_CLEAR_RETRY 10
130 int sdw_fill_msg(struct sdw_msg
*msg
, struct sdw_slave
*slave
,
131 u32 addr
, size_t count
, u16 dev_num
, u8 flags
, u8
*buf
);
133 /* Read-Modify-Write Slave register */
135 sdw_update(struct sdw_slave
*slave
, u32 addr
, u8 mask
, u8 val
)
139 tmp
= sdw_read(slave
, addr
);
143 tmp
= (tmp
& ~mask
) | val
;
144 return sdw_write(slave
, addr
, tmp
);
147 #endif /* __SDW_BUS_H */