diff options
| author | Sangbeom Kim <sbkim73@samsung.com> | 2011-07-20 10:07:13 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-07-20 21:58:12 +0200 |
| commit | d7c3e9525ac8e898f1156a1f3a7c5038f6560186 (patch) | |
| tree | 3a350ac7e3770e0ebafbb872f75767479c8ace83 /sound/soc/samsung/idma.h | |
| parent | ASoC: SAMSUNG: Modify I2S driver to support idma (diff) | |
| download | linux-d7c3e9525ac8e898f1156a1f3a7c5038f6560186.tar.xz linux-d7c3e9525ac8e898f1156a1f3a7c5038f6560186.zip | |
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.
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/samsung/idma.h | 26 |
1 files changed, 26 insertions, 0 deletions
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_ */ |