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23859465 PLB |
1 | /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ |
2 | /* Copyright(c) 2015-17 Intel Corporation. */ | |
7c3cd189 VK |
3 | |
4 | #ifndef __SDW_BUS_H | |
5 | #define __SDW_BUS_H | |
6 | ||
ce6e74d0 SN |
7 | #define DEFAULT_BANK_SWITCH_TIMEOUT 3000 |
8 | ||
7c3cd189 VK |
9 | #if IS_ENABLED(CONFIG_ACPI) |
10 | int sdw_acpi_find_slaves(struct sdw_bus *bus); | |
11 | #else | |
12 | static inline int sdw_acpi_find_slaves(struct sdw_bus *bus) | |
13 | { | |
14 | return -ENOTSUPP; | |
15 | } | |
16 | #endif | |
17 | ||
18 | void sdw_extract_slave_id(struct sdw_bus *bus, | |
806a11f0 | 19 | u64 addr, struct sdw_slave_id *id); |
7c3cd189 | 20 | |
9d715fa0 VK |
21 | enum { |
22 | SDW_MSG_FLAG_READ = 0, | |
23 | SDW_MSG_FLAG_WRITE, | |
24 | }; | |
25 | ||
26 | /** | |
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 | |
37 | */ | |
38 | struct sdw_msg { | |
39 | u16 addr; | |
40 | u16 len; | |
41 | u8 dev_num; | |
42 | u8 addr_page1; | |
43 | u8 addr_page2; | |
44 | u8 flags; | |
45 | u8 *buf; | |
46 | bool ssp_sync; | |
47 | bool page; | |
48 | }; | |
49 | ||
99b8a5d6 SK |
50 | #define SDW_DOUBLE_RATE_FACTOR 2 |
51 | ||
fe4b70f2 PLB |
52 | extern int sdw_rows[SDW_FRAME_ROWS]; |
53 | extern int sdw_cols[SDW_FRAME_COLS]; | |
54 | ||
55 | int sdw_find_row_index(int row); | |
56 | int sdw_find_col_index(int col); | |
99b8a5d6 | 57 | |
bbe7379d SK |
58 | /** |
59 | * sdw_port_runtime: Runtime port parameters for Master or Slave | |
60 | * | |
61 | * @num: Port number. For audio streams, valid port number ranges from | |
62 | * [1,14] | |
63 | * @ch_mask: Channel mask | |
64 | * @transport_params: Transport parameters | |
65 | * @port_params: Port parameters | |
66 | * @port_node: List node for Master or Slave port_list | |
67 | * | |
68 | * SoundWire spec has no mention of ports for Master interface but the | |
69 | * concept is logically extended. | |
70 | */ | |
71 | struct sdw_port_runtime { | |
72 | int num; | |
73 | int ch_mask; | |
74 | struct sdw_transport_params transport_params; | |
75 | struct sdw_port_params port_params; | |
76 | struct list_head port_node; | |
77 | }; | |
78 | ||
89e59053 SK |
79 | /** |
80 | * sdw_slave_runtime: Runtime Stream parameters for Slave | |
81 | * | |
82 | * @slave: Slave handle | |
83 | * @direction: Data direction for Slave | |
84 | * @ch_count: Number of channels handled by the Slave for | |
85 | * this stream | |
86 | * @m_rt_node: sdw_master_runtime list node | |
bbe7379d | 87 | * @port_list: List of Slave Ports configured for this stream |
89e59053 SK |
88 | */ |
89 | struct sdw_slave_runtime { | |
90 | struct sdw_slave *slave; | |
91 | enum sdw_data_direction direction; | |
92 | unsigned int ch_count; | |
93 | struct list_head m_rt_node; | |
bbe7379d | 94 | struct list_head port_list; |
89e59053 SK |
95 | }; |
96 | ||
97 | /** | |
98 | * sdw_master_runtime: Runtime stream parameters for Master | |
99 | * | |
100 | * @bus: Bus handle | |
101 | * @stream: Stream runtime handle | |
102 | * @direction: Data direction for Master | |
103 | * @ch_count: Number of channels handled by the Master for | |
104 | * this stream, can be zero. | |
105 | * @slave_rt_list: Slave runtime list | |
bbe7379d | 106 | * @port_list: List of Master Ports configured for this stream, can be zero. |
0c4a1049 | 107 | * @stream_node: sdw_stream_runtime master_list node |
89e59053 SK |
108 | * @bus_node: sdw_bus m_rt_list node |
109 | */ | |
110 | struct sdw_master_runtime { | |
111 | struct sdw_bus *bus; | |
112 | struct sdw_stream_runtime *stream; | |
113 | enum sdw_data_direction direction; | |
114 | unsigned int ch_count; | |
115 | struct list_head slave_rt_list; | |
bbe7379d | 116 | struct list_head port_list; |
0c4a1049 | 117 | struct list_head stream_node; |
89e59053 SK |
118 | struct list_head bus_node; |
119 | }; | |
120 | ||
f8101c74 | 121 | struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave, |
806a11f0 PLB |
122 | enum sdw_data_direction direction, |
123 | unsigned int port_num); | |
79df15b7 | 124 | int sdw_configure_dpn_intr(struct sdw_slave *slave, int port, |
806a11f0 | 125 | bool enable, int mask); |
f8101c74 | 126 | |
9d715fa0 VK |
127 | int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg); |
128 | int sdw_transfer_defer(struct sdw_bus *bus, struct sdw_msg *msg, | |
806a11f0 | 129 | struct sdw_defer *defer); |
9d715fa0 | 130 | |
b0a9c37b VK |
131 | #define SDW_READ_INTR_CLEAR_RETRY 10 |
132 | ||
9d715fa0 | 133 | int sdw_fill_msg(struct sdw_msg *msg, struct sdw_slave *slave, |
806a11f0 | 134 | u32 addr, size_t count, u16 dev_num, u8 flags, u8 *buf); |
9d715fa0 | 135 | |
d52d7a1b SK |
136 | /* Read-Modify-Write Slave register */ |
137 | static inline int | |
138 | sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) | |
139 | { | |
140 | int tmp; | |
141 | ||
142 | tmp = sdw_read(slave, addr); | |
143 | if (tmp < 0) | |
144 | return tmp; | |
145 | ||
146 | tmp = (tmp & ~mask) | val; | |
147 | return sdw_write(slave, addr, tmp); | |
148 | } | |
149 | ||
7c3cd189 | 150 | #endif /* __SDW_BUS_H */ |