| 1 | /* |
| 2 | * arch/ubicom32/include/asm/pcm_tio.h |
| 3 | * Ubicom32 architecture PCM TIO definitions. |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | */ |
| 23 | #ifndef _ASM_UBICOM32_PCM_TIO_H |
| 24 | #define _ASM_UBICOM32_PCM_TIO_H |
| 25 | |
| 26 | #include <asm/devtree.h> |
| 27 | |
| 28 | #define PCM_TIO_REGS_VERSION 2 |
| 29 | struct pcm_tio_regs { |
| 30 | /* |
| 31 | * set this value to 1 to reload the parameters and restart the HRT |
| 32 | */ |
| 33 | u32_t reload; |
| 34 | |
| 35 | /* |
| 36 | * Pointers to the input and output buffers |
| 37 | */ |
| 38 | void *input_buf; |
| 39 | void *output_buf; |
| 40 | |
| 41 | /* |
| 42 | * Buffer size (see pcm_hrt.S for constraints) |
| 43 | */ |
| 44 | u32_t buffer_size; |
| 45 | |
| 46 | /* |
| 47 | * Current cycle. This variable increases every time half the buffer |
| 48 | * is consumed. |
| 49 | */ |
| 50 | u32_t cycle; |
| 51 | |
| 52 | /* |
| 53 | * Fields below this line are not accessed by the HRT. They are purely |
| 54 | * informational for the user of this TIO. |
| 55 | */ |
| 56 | |
| 57 | /* |
| 58 | * Version of this structure |
| 59 | */ |
| 60 | u32_t version; |
| 61 | |
| 62 | /* |
| 63 | * Number of channels supported |
| 64 | */ |
| 65 | u32_t channels; |
| 66 | |
| 67 | /* |
| 68 | * Maximum buffer size |
| 69 | */ |
| 70 | u32_t max_buffer_size; |
| 71 | }; |
| 72 | |
| 73 | /* |
| 74 | * Our device node |
| 75 | */ |
| 76 | #define PCM_TIO_NODE_VERSION 1 |
| 77 | struct pcm_tio_node { |
| 78 | struct devtree_node dn; |
| 79 | u32_t version; |
| 80 | struct pcm_tio_regs *regs; |
| 81 | }; |
| 82 | |
| 83 | #endif |
| 84 | |
| 85 | |
