| Mahesh Kumar Sharma | 41a4d38 | 2017-01-17 17:00:51 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | #ifndef BTFM_SLIM_H |
| 13 | #define BTFM_SLIM_H |
| 14 | #include <linux/slimbus/slimbus.h> |
| 15 | |
| 16 | #define BTFMSLIM_DBG(fmt, arg...) pr_debug("%s: " fmt "\n", __func__, ## arg) |
| 17 | #define BTFMSLIM_INFO(fmt, arg...) pr_info("%s: " fmt "\n", __func__, ## arg) |
| 18 | #define BTFMSLIM_ERR(fmt, arg...) pr_err("%s: " fmt "\n", __func__, ## arg) |
| 19 | |
| 20 | /* Vendor specific defines |
| 21 | * This should redefines in slimbus slave specific header |
| 22 | */ |
| 23 | #define SLIM_SLAVE_COMPATIBLE_STR "btfmslim_slave" |
| 24 | #define SLIM_SLAVE_REG_OFFSET 0x0000 |
| 25 | #define SLIM_SLAVE_RXPORT NULL |
| 26 | #define SLIM_SLAVE_TXPORT NULL |
| 27 | #define SLIM_SLAVE_INIT NULL |
| 28 | #define SLIM_SLAVE_PORT_EN NULL |
| 29 | |
| 30 | /* Misc defines */ |
| 31 | #define SLIM_SLAVE_RW_MAX_TRIES 3 |
| 32 | #define SLIM_SLAVE_PRESENT_TIMEOUT 100 |
| 33 | |
| 34 | #define PGD 1 |
| 35 | #define IFD 0 |
| 36 | |
| 37 | |
| 38 | /* Codec driver defines */ |
| 39 | enum { |
| 40 | BTFM_FM_SLIM_TX = 0, |
| 41 | BTFM_BT_SCO_SLIM_TX, |
| 42 | BTFM_BT_SCO_A2DP_SLIM_RX, |
| 43 | BTFM_BT_SPLIT_A2DP_SLIM_RX, |
| 44 | BTFM_SLIM_NUM_CODEC_DAIS |
| 45 | }; |
| 46 | |
| 47 | /* Slimbus Port defines - This should be redefined in specific device file */ |
| 48 | #define BTFM_SLIM_PGD_PORT_LAST 0xFF |
| 49 | |
| 50 | struct btfmslim_ch { |
| 51 | int id; |
| 52 | char *name; |
| 53 | uint32_t port_hdl; /* slimbus port handler */ |
| 54 | uint16_t port; /* slimbus port number */ |
| 55 | |
| 56 | uint8_t ch; /* slimbus channel number */ |
| 57 | uint16_t ch_hdl; /* slimbus channel handler */ |
| 58 | uint16_t grph; /* slimbus group channel handler */ |
| 59 | }; |
| 60 | |
| 61 | struct btfmslim { |
| 62 | struct device *dev; |
| 63 | struct slim_device *slim_pgd; |
| 64 | struct slim_device slim_ifd; |
| 65 | struct mutex io_lock; |
| 66 | struct mutex xfer_lock; |
| 67 | uint8_t enabled; |
| 68 | |
| 69 | uint32_t num_rx_port; |
| 70 | uint32_t num_tx_port; |
| 71 | |
| 72 | struct btfmslim_ch *rx_chs; |
| 73 | struct btfmslim_ch *tx_chs; |
| 74 | |
| 75 | int (*vendor_init)(struct btfmslim *btfmslim); |
| 76 | int (*vendor_port_en)(struct btfmslim *btfmslim, uint8_t port_num, |
| 77 | uint8_t rxport, uint8_t enable); |
| 78 | }; |
| 79 | |
| 80 | /** |
| 81 | * btfm_slim_hw_init: Initialize slimbus slave device |
| 82 | * Returns: |
| 83 | * 0: Success |
| 84 | * else: Fail |
| 85 | */ |
| 86 | int btfm_slim_hw_init(struct btfmslim *btfmslim); |
| 87 | |
| 88 | /** |
| 89 | * btfm_slim_hw_deinit: Deinitialize slimbus slave device |
| 90 | * Returns: |
| 91 | * 0: Success |
| 92 | * else: Fail |
| 93 | */ |
| 94 | int btfm_slim_hw_deinit(struct btfmslim *btfmslim); |
| 95 | |
| 96 | /** |
| 97 | * btfm_slim_write: write value to pgd or ifd device |
| 98 | * @btfmslim: slimbus slave device data pointer. |
| 99 | * @reg: slimbus slave register address |
| 100 | * @bytes: length of data |
| 101 | * @src: data pointer to write |
| 102 | * @pgd: selection for device: either PGD or IFD |
| 103 | * Returns: |
| 104 | * -EINVAL |
| 105 | * -ETIMEDOUT |
| 106 | * -ENOMEM |
| 107 | */ |
| 108 | int btfm_slim_write(struct btfmslim *btfmslim, |
| 109 | uint16_t reg, int bytes, void *src, uint8_t pgd); |
| 110 | |
| 111 | |
| 112 | |
| 113 | /** |
| 114 | * btfm_slim_read: read value from pgd or ifd device |
| 115 | * @btfmslim: slimbus slave device data pointer. |
| 116 | * @reg: slimbus slave register address |
| 117 | * @bytes: length of data |
| 118 | * @dest: data pointer to read |
| 119 | * @pgd: selection for device: either PGD or IFD |
| 120 | * Returns: |
| 121 | * -EINVAL |
| 122 | * -ETIMEDOUT |
| 123 | * -ENOMEM |
| 124 | */ |
| 125 | int btfm_slim_read(struct btfmslim *btfmslim, |
| 126 | uint16_t reg, int bytes, void *dest, uint8_t pgd); |
| 127 | |
| 128 | |
| 129 | /** |
| 130 | * btfm_slim_enable_ch: enable channel for slimbus slave port |
| 131 | * @btfmslim: slimbus slave device data pointer. |
| 132 | * @ch: slimbus slave channel pointer |
| 133 | * @rxport: rxport or txport |
| 134 | * Returns: |
| 135 | * -EINVAL |
| 136 | * -ETIMEDOUT |
| 137 | * -ENOMEM |
| 138 | */ |
| 139 | int btfm_slim_enable_ch(struct btfmslim *btfmslim, |
| 140 | struct btfmslim_ch *ch, uint8_t rxport, uint32_t rates, |
| 141 | uint8_t grp, uint8_t nchan); |
| 142 | |
| 143 | /** |
| 144 | * btfm_slim_disable_ch: disable channel for slimbus slave port |
| 145 | * @btfmslim: slimbus slave device data pointer. |
| 146 | * @ch: slimbus slave channel pointer |
| 147 | * @rxport: rxport or txport |
| 148 | * Returns: |
| 149 | * -EINVAL |
| 150 | * -ETIMEDOUT |
| 151 | * -ENOMEM |
| 152 | */ |
| 153 | int btfm_slim_disable_ch(struct btfmslim *btfmslim, |
| 154 | struct btfmslim_ch *ch, uint8_t rxport, uint8_t grp, uint8_t nchan); |
| 155 | |
| 156 | /** |
| 157 | * btfm_slim_register_codec: Register codec driver in slimbus device node |
| 158 | * @dev: device node |
| 159 | * Returns: |
| 160 | * -ENOMEM |
| 161 | * 0 |
| 162 | */ |
| 163 | int btfm_slim_register_codec(struct device *dev); |
| 164 | #endif /* BTFM_SLIM_H */ |