1 /* 2 * tegra_pcm.h - Definitions for Tegra PCM driver 3 * 4 * Author: Stephen Warren <swarren@nvidia.com> 5 * Copyright (C) 2010 - NVIDIA, Inc. 6 * 7 * Based on code copyright/by: 8 * 9 * Copyright (c) 2009-2010, NVIDIA Corporation. 10 * Scott Peterson <speterson@nvidia.com> 11 * 12 * Copyright (C) 2010 Google, Inc. 13 * Iliyan Malchev <malchev@google.com> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * version 2 as published by the Free Software Foundation. 18 * 19 * This program is distributed in the hope that it will be useful, but 20 * WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 * General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 27 * 02110-1301 USA 28 * 29 */ 30 31 #ifndef __TEGRA_PCM_H__ 32 #define __TEGRA_PCM_H__ 33 34 #include <mach/dma.h> 35 36 struct tegra_pcm_dma_params { 37 unsigned long addr; 38 unsigned long wrap; 39 unsigned long width; 40 unsigned long req_sel; 41 }; 42 43 struct tegra_runtime_data { 44 struct snd_pcm_substream *substream; 45 spinlock_t lock; 46 int running; 47 int dma_pos; 48 int dma_pos_end; 49 int period_index; 50 int dma_req_idx; 51 struct tegra_dma_req dma_req[2]; 52 struct tegra_dma_channel *dma_chan; 53 }; 54 55 #endif 56