mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 06:04:14 +08:00
d9288d0ba1
Sound data needs to be sent to R-Car sound SSI when playback. But, there are 2 interfaces for it. 1st is SSITDR/SSIRDR which are mapped on SSI. 2nd is SSIn_BUSIF which are mapped on SSIU. 2nd SSIn_BUSIF is used when DMA transfer, and it is always used if sound data came from via SRC. But, we can use it when SSI+DMA case too. (Current driver is assuming 1st SSITDR/SSIRDR for it) 2nd SSIn_BUSIF can be used as FIFO. This is very helpful/useful for SSI+DMA. But DMA address / DMA ID are not same between 1st/2nd cases. This patch care about these settings. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
104 lines
2.1 KiB
C
104 lines
2.1 KiB
C
/*
|
|
* Renesas R-Car SRU/SCU/SSIU/SSI support
|
|
*
|
|
* Copyright (C) 2013 Renesas Solutions Corp.
|
|
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.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.
|
|
*/
|
|
|
|
#ifndef RCAR_SND_H
|
|
#define RCAR_SND_H
|
|
|
|
#include <linux/sh_clk.h>
|
|
|
|
#define RSND_GEN1_SRU 0
|
|
#define RSND_GEN1_ADG 1
|
|
#define RSND_GEN1_SSI 2
|
|
|
|
#define RSND_GEN2_SCU 0
|
|
#define RSND_GEN2_ADG 1
|
|
#define RSND_GEN2_SSIU 2
|
|
#define RSND_GEN2_SSI 3
|
|
|
|
#define RSND_BASE_MAX 4
|
|
|
|
/*
|
|
* flags
|
|
*
|
|
* 0xAB000000
|
|
*
|
|
* A : clock sharing settings
|
|
* B : SSI direction
|
|
*/
|
|
#define RSND_SSI_CLK_PIN_SHARE (1 << 31)
|
|
#define RSND_SSI_NO_BUSIF (1 << 30) /* SSI+DMA without BUSIF */
|
|
|
|
#define RSND_SSI(_dma_id, _pio_irq, _flags) \
|
|
{ .dma_id = _dma_id, .pio_irq = _pio_irq, .flags = _flags }
|
|
#define RSND_SSI_UNUSED \
|
|
{ .dma_id = -1, .pio_irq = -1, .flags = 0 }
|
|
|
|
struct rsnd_ssi_platform_info {
|
|
int dma_id;
|
|
int pio_irq;
|
|
u32 flags;
|
|
};
|
|
|
|
#define RSND_SRC(rate, _dma_id) \
|
|
{ .convert_rate = rate, .dma_id = _dma_id, }
|
|
#define RSND_SRC_UNUSED \
|
|
{ .convert_rate = 0, .dma_id = -1, }
|
|
|
|
struct rsnd_src_platform_info {
|
|
u32 convert_rate; /* sampling rate convert */
|
|
int dma_id; /* for Gen2 SCU */
|
|
};
|
|
|
|
/*
|
|
* flags
|
|
*/
|
|
struct rsnd_dvc_platform_info {
|
|
u32 flags;
|
|
};
|
|
|
|
struct rsnd_dai_path_info {
|
|
struct rsnd_ssi_platform_info *ssi;
|
|
struct rsnd_src_platform_info *src;
|
|
struct rsnd_dvc_platform_info *dvc;
|
|
};
|
|
|
|
struct rsnd_dai_platform_info {
|
|
struct rsnd_dai_path_info playback;
|
|
struct rsnd_dai_path_info capture;
|
|
};
|
|
|
|
/*
|
|
* flags
|
|
*
|
|
* 0x0000000A
|
|
*
|
|
* A : generation
|
|
*/
|
|
#define RSND_GEN_MASK (0xF << 0)
|
|
#define RSND_GEN1 (1 << 0) /* fixme */
|
|
#define RSND_GEN2 (2 << 0) /* fixme */
|
|
|
|
struct rcar_snd_info {
|
|
u32 flags;
|
|
struct rsnd_ssi_platform_info *ssi_info;
|
|
int ssi_info_nr;
|
|
struct rsnd_src_platform_info *src_info;
|
|
int src_info_nr;
|
|
struct rsnd_dvc_platform_info *dvc_info;
|
|
int dvc_info_nr;
|
|
struct rsnd_dai_platform_info *dai_info;
|
|
int dai_info_nr;
|
|
int (*start)(int id);
|
|
int (*stop)(int id);
|
|
};
|
|
|
|
#endif
|