From f09aecd50f39d35372e551491d9f36ff0f51ee4d Mon Sep 17 00:00:00 2001 From: Sangbeom Kim Date: Wed, 20 Jul 2011 17:07:13 +0900 Subject: ASoC: SAMSUNG: Add I2S0 internal dma driver I2S in Exynos4 and S5PC110(S5PV210) has a internal dma. It can be used low power audio mode and 2nd channel transfer. This patch can support idma. [Reapplied after dependencies propagated through in 3.1-rc1. --broonie] Signed-off-by: Sangbeom Kim Acked-by: Jassi Brar Acked-by: Liam Girdwood Acked-by: Jassi Brar Signed-off-by: Mark Brown --- sound/soc/samsung/idma.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 sound/soc/samsung/idma.h (limited to 'sound/soc/samsung/idma.h') diff --git a/sound/soc/samsung/idma.h b/sound/soc/samsung/idma.h new file mode 100644 index 000000000000..48273216166e --- /dev/null +++ b/sound/soc/samsung/idma.h @@ -0,0 +1,26 @@ +/* + * sound/soc/samsung/idma.h + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd + * http://www.samsung.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#ifndef __SND_SOC_SAMSUNG_IDMA_H_ +#define __SND_SOC_SAMSUNG_IDMA_H_ + +extern void idma_reg_addr_init(void *regs, dma_addr_t addr); + +/* dma_state */ +#define LPAM_DMA_STOP 0 +#define LPAM_DMA_START 1 + +#define MAX_IDMA_PERIOD (128 * 1024) +#define MAX_IDMA_BUFFER (160 * 1024) + +#endif /* __SND_SOC_SAMSUNG_IDMA_H_ */ -- cgit v1.2.3