diff options
| author | Stephen Warren <swarren@nvidia.com> | 2011-01-07 22:36:13 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-01-10 22:20:29 +0000 |
| commit | 7605eb5bc327497aed1816d6238d3b64e032b491 (patch) | |
| tree | 0cb6357c059724d3eec03c42823ee333c3e6741d /sound/soc/tegra/tegra_pcm.h | |
| parent | f0d8af4f528ee6dd63670521d429edac67934c06 (diff) | |
ASoC: tegra: Add tegra-pcm driver
This provides an ASoC platform driver that manages Tegra's APB DMA
controller.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/tegra/tegra_pcm.h')
| -rw-r--r-- | sound/soc/tegra/tegra_pcm.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h new file mode 100644 index 000000000000..dbb90339fe0d --- /dev/null +++ b/sound/soc/tegra/tegra_pcm.h @@ -0,0 +1,55 @@ +/* + * tegra_pcm.h - Definitions for Tegra PCM driver + * + * Author: Stephen Warren <swarren@nvidia.com> + * Copyright (C) 2010 - NVIDIA, Inc. + * + * Based on code copyright/by: + * + * Copyright (c) 2009-2010, NVIDIA Corporation. + * Scott Peterson <speterson@nvidia.com> + * + * Copyright (C) 2010 Google, Inc. + * Iliyan Malchev <malchev@google.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#ifndef __TEGRA_PCM_H__ +#define __TEGRA_PCM_H__ + +#include <mach/dma.h> + +struct tegra_pcm_dma_params { + unsigned long addr; + unsigned long wrap; + unsigned long width; + unsigned long req_sel; +}; + +struct tegra_runtime_data { + struct snd_pcm_substream *substream; + spinlock_t lock; + int running; + int dma_pos; + int dma_pos_end; + int period_index; + int dma_req_idx; + struct tegra_dma_req dma_req[2]; + struct tegra_dma_channel *dma_chan; +}; + +#endif |