projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 7605eb5b SW |
1 | /* |
| 2 | * tegra_pcm.c - Tegra PCM driver | |
| 3 | * | |
| 4 | * Author: Stephen Warren <swarren@nvidia.com> | |
| 518de86b | 5 | * Copyright (C) 2010,2012 - NVIDIA, Inc. |
| 7605eb5b SW |
6 | * |
| 7 | * Based on code copyright/by: | |
| 8 | * | |
| 9 | * Copyright (c) 2009-2010, NVIDIA Corporation. | |
| 10 | * Scott Peterson <speterson@nvidia.com> | |
| 11 | * Vijay Mali <vmali@nvidia.com> | |
| 12 | * | |
| 13 | * Copyright (C) 2010 Google, Inc. | |
| 14 | * Iliyan Malchev <malchev@google.com> | |
| 15 | * | |
| 16 | * This program is free software; you can redistribute it and/or | |
| 17 | * modify it under the terms of the GNU General Public License | |
| 18 | * version 2 as published by the Free Software Foundation. | |
| 19 | * | |
| 20 | * This program is distributed in the hope that it will be useful, but | |
| 21 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 23 | * General Public License for more details. | |
| 24 | * | |
| 25 | * You should have received a copy of the GNU General Public License | |
| 26 | * along with this program; if not, write to the Free Software | |
| 27 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
| 28 | * 02110-1301 USA | |
| 29 | * | |
| 30 | */ | |
| 31 | ||
| 7613c508 | 32 | #include <linux/module.h> |
| 7605eb5b SW |
33 | #include <sound/core.h> |
| 34 | #include <sound/pcm.h> | |
| 35 | #include <sound/pcm_params.h> | |
| 36 | #include <sound/soc.h> | |
| df79f55d | 37 | #include <sound/dmaengine_pcm.h> |
| 7605eb5b SW |
38 | |
| 39 | #include "tegra_pcm.h" | |
| 40 | ||
| 41 | static const struct snd_pcm_hardware tegra_pcm_hardware = { | |
| 42 | .info = SNDRV_PCM_INFO_MMAP | | |
| 43 | SNDRV_PCM_INFO_MMAP_VALID | | |
| 7605eb5b | 44 | SNDRV_PCM_INFO_INTERLEAVED, |
| 7605eb5b SW |
45 | .period_bytes_min = 1024, |
| 46 | .period_bytes_max = PAGE_SIZE, | |
| 47 | .periods_min = 2, | |
| 48 | .periods_max = 8, | |
| 49 | .buffer_bytes_max = PAGE_SIZE * 8, | |
| 50 | .fifo_size = 4, | |
| 51 | }; | |
| 52 | ||
| 11a8576a LPC |
53 | static const struct snd_dmaengine_pcm_config tegra_dmaengine_pcm_config = { |
| 54 | .pcm_hardware = &tegra_pcm_hardware, | |
| 55 | .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, | |
| 11a8576a | 56 | .prealloc_buffer_size = PAGE_SIZE * 8, |
| 7605eb5b SW |
57 | }; |
| 58 | ||
| 4652a0d0 | 59 | int tegra_pcm_platform_register(struct device *dev) |
| 7605eb5b | 60 | { |
| 11a8576a LPC |
61 | return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, |
| 62 | SND_DMAENGINE_PCM_FLAG_NO_DT | | |
| 63 | SND_DMAENGINE_PCM_FLAG_COMPAT); | |
| 7605eb5b | 64 | } |
| 518de86b | 65 | EXPORT_SYMBOL_GPL(tegra_pcm_platform_register); |
| 7605eb5b | 66 | |
| 4652a0d0 | 67 | void tegra_pcm_platform_unregister(struct device *dev) |
| 7605eb5b | 68 | { |
| 11a8576a | 69 | return snd_dmaengine_pcm_unregister(dev); |
| 7605eb5b | 70 | } |
| 518de86b | 71 | EXPORT_SYMBOL_GPL(tegra_pcm_platform_unregister); |
| 7605eb5b SW |
72 | |
| 73 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); | |
| 74 | MODULE_DESCRIPTION("Tegra PCM ASoC driver"); | |
| 75 | MODULE_LICENSE("GPL"); |