Vinod Koul | 7c3cd18 | 2017-12-14 11:19:34 +0530 | [diff] [blame] | 1 | // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) |
| 2 | // Copyright(c) 2015-17 Intel Corporation. |
| 3 | |
| 4 | #ifndef __SDW_BUS_H |
| 5 | #define __SDW_BUS_H |
| 6 | |
| 7 | #if IS_ENABLED(CONFIG_ACPI) |
| 8 | int sdw_acpi_find_slaves(struct sdw_bus *bus); |
| 9 | #else |
| 10 | static inline int sdw_acpi_find_slaves(struct sdw_bus *bus) |
| 11 | { |
| 12 | return -ENOTSUPP; |
| 13 | } |
| 14 | #endif |
| 15 | |
| 16 | void sdw_extract_slave_id(struct sdw_bus *bus, |
| 17 | u64 addr, struct sdw_slave_id *id); |
| 18 | |
Vinod Koul | 9d715fa | 2017-12-14 11:19:37 +0530 | [diff] [blame] | 19 | enum { |
| 20 | SDW_MSG_FLAG_READ = 0, |
| 21 | SDW_MSG_FLAG_WRITE, |
| 22 | }; |
| 23 | |
| 24 | /** |
| 25 | * struct sdw_msg - Message structure |
| 26 | * @addr: Register address accessed in the Slave |
| 27 | * @len: number of messages |
| 28 | * @dev_num: Slave device number |
| 29 | * @addr_page1: SCP address page 1 Slave register |
| 30 | * @addr_page2: SCP address page 2 Slave register |
| 31 | * @flags: transfer flags, indicate if xfer is read or write |
| 32 | * @buf: message data buffer |
| 33 | * @ssp_sync: Send message at SSP (Stream Synchronization Point) |
| 34 | * @page: address requires paging |
| 35 | */ |
| 36 | struct sdw_msg { |
| 37 | u16 addr; |
| 38 | u16 len; |
| 39 | u8 dev_num; |
| 40 | u8 addr_page1; |
| 41 | u8 addr_page2; |
| 42 | u8 flags; |
| 43 | u8 *buf; |
| 44 | bool ssp_sync; |
| 45 | bool page; |
| 46 | }; |
| 47 | |
Sanyog Kale | 99b8a5d | 2018-04-26 18:38:28 +0530 | [diff] [blame] | 48 | #define SDW_DOUBLE_RATE_FACTOR 2 |
| 49 | |
| 50 | extern int rows[SDW_FRAME_ROWS]; |
| 51 | extern int cols[SDW_FRAME_COLS]; |
| 52 | |
Sanyog Kale | 89e5905 | 2018-04-26 18:38:08 +0530 | [diff] [blame] | 53 | /** |
Sanyog Kale | bbe7379 | 2018-04-26 18:38:13 +0530 | [diff] [blame] | 54 | * sdw_port_runtime: Runtime port parameters for Master or Slave |
| 55 | * |
| 56 | * @num: Port number. For audio streams, valid port number ranges from |
| 57 | * [1,14] |
| 58 | * @ch_mask: Channel mask |
| 59 | * @transport_params: Transport parameters |
| 60 | * @port_params: Port parameters |
| 61 | * @port_node: List node for Master or Slave port_list |
| 62 | * |
| 63 | * SoundWire spec has no mention of ports for Master interface but the |
| 64 | * concept is logically extended. |
| 65 | */ |
| 66 | struct sdw_port_runtime { |
| 67 | int num; |
| 68 | int ch_mask; |
| 69 | struct sdw_transport_params transport_params; |
| 70 | struct sdw_port_params port_params; |
| 71 | struct list_head port_node; |
| 72 | }; |
| 73 | |
| 74 | /** |
Sanyog Kale | 89e5905 | 2018-04-26 18:38:08 +0530 | [diff] [blame] | 75 | * sdw_slave_runtime: Runtime Stream parameters for Slave |
| 76 | * |
| 77 | * @slave: Slave handle |
| 78 | * @direction: Data direction for Slave |
| 79 | * @ch_count: Number of channels handled by the Slave for |
| 80 | * this stream |
| 81 | * @m_rt_node: sdw_master_runtime list node |
Sanyog Kale | bbe7379 | 2018-04-26 18:38:13 +0530 | [diff] [blame] | 82 | * @port_list: List of Slave Ports configured for this stream |
Sanyog Kale | 89e5905 | 2018-04-26 18:38:08 +0530 | [diff] [blame] | 83 | */ |
| 84 | struct sdw_slave_runtime { |
| 85 | struct sdw_slave *slave; |
| 86 | enum sdw_data_direction direction; |
| 87 | unsigned int ch_count; |
| 88 | struct list_head m_rt_node; |
Sanyog Kale | bbe7379 | 2018-04-26 18:38:13 +0530 | [diff] [blame] | 89 | struct list_head port_list; |
Sanyog Kale | 89e5905 | 2018-04-26 18:38:08 +0530 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | /** |
| 93 | * sdw_master_runtime: Runtime stream parameters for Master |
| 94 | * |
| 95 | * @bus: Bus handle |
| 96 | * @stream: Stream runtime handle |
| 97 | * @direction: Data direction for Master |
| 98 | * @ch_count: Number of channels handled by the Master for |
| 99 | * this stream, can be zero. |
| 100 | * @slave_rt_list: Slave runtime list |
Sanyog Kale | bbe7379 | 2018-04-26 18:38:13 +0530 | [diff] [blame] | 101 | * @port_list: List of Master Ports configured for this stream, can be zero. |
Sanyog Kale | 89e5905 | 2018-04-26 18:38:08 +0530 | [diff] [blame] | 102 | * @bus_node: sdw_bus m_rt_list node |
| 103 | */ |
| 104 | struct sdw_master_runtime { |
| 105 | struct sdw_bus *bus; |
| 106 | struct sdw_stream_runtime *stream; |
| 107 | enum sdw_data_direction direction; |
| 108 | unsigned int ch_count; |
| 109 | struct list_head slave_rt_list; |
Sanyog Kale | bbe7379 | 2018-04-26 18:38:13 +0530 | [diff] [blame] | 110 | struct list_head port_list; |
Sanyog Kale | 89e5905 | 2018-04-26 18:38:08 +0530 | [diff] [blame] | 111 | struct list_head bus_node; |
| 112 | }; |
| 113 | |
Sanyog Kale | f8101c7 | 2018-04-26 18:38:17 +0530 | [diff] [blame] | 114 | struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave, |
| 115 | enum sdw_data_direction direction, |
| 116 | unsigned int port_num); |
Sanyog Kale | 79df15b | 2018-04-26 18:38:23 +0530 | [diff] [blame] | 117 | int sdw_configure_dpn_intr(struct sdw_slave *slave, int port, |
| 118 | bool enable, int mask); |
Sanyog Kale | f8101c7 | 2018-04-26 18:38:17 +0530 | [diff] [blame] | 119 | |
Vinod Koul | 9d715fa | 2017-12-14 11:19:37 +0530 | [diff] [blame] | 120 | int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg); |
| 121 | int sdw_transfer_defer(struct sdw_bus *bus, struct sdw_msg *msg, |
| 122 | struct sdw_defer *defer); |
| 123 | |
Vinod Koul | b0a9c37 | 2017-12-14 11:19:40 +0530 | [diff] [blame] | 124 | #define SDW_READ_INTR_CLEAR_RETRY 10 |
| 125 | |
Vinod Koul | 9d715fa | 2017-12-14 11:19:37 +0530 | [diff] [blame] | 126 | int sdw_fill_msg(struct sdw_msg *msg, struct sdw_slave *slave, |
| 127 | u32 addr, size_t count, u16 dev_num, u8 flags, u8 *buf); |
| 128 | |
Sanyog Kale | d52d7a1 | 2017-12-14 11:19:39 +0530 | [diff] [blame] | 129 | /* Read-Modify-Write Slave register */ |
| 130 | static inline int |
| 131 | sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) |
| 132 | { |
| 133 | int tmp; |
| 134 | |
| 135 | tmp = sdw_read(slave, addr); |
| 136 | if (tmp < 0) |
| 137 | return tmp; |
| 138 | |
| 139 | tmp = (tmp & ~mask) | val; |
| 140 | return sdw_write(slave, addr, tmp); |
| 141 | } |
| 142 | |
Vinod Koul | 7c3cd18 | 2017-12-14 11:19:34 +0530 | [diff] [blame] | 143 | #endif /* __SDW_BUS_H */ |