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ASoC: rsnd: add rsnd_gen_dma_addr() for DMAC addr

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The DMAC src/dst addr needs to be set from driver when DT case.
(It was set from SoC/DMAEngine code when non-DT case)
This patch adds rsnd_gen_dma_addr() to set DMAC src/dst addr.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Kuninori Morimoto 2014-05-22 23:25:54 -07:00 committed by Mark Brown
parent 199e7688bd
commit ad32d0c7b0
3 changed files with 101 additions and 4 deletions
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5
sound/soc/sh/rcar/core.c
View File

@ -358,10 +358,7 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
return -EIO;
}
cfg.slave_id = id;
cfg.dst_addr = 0; /* use default addr when playback */
cfg.src_addr = 0; /* use default addr when capture */
cfg.direction = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
rsnd_gen_dma_addr(priv, dma, &cfg, is_play, id);
ret = dmaengine_slave_config(dma->chan, &cfg);
if (ret < 0)

95
sound/soc/sh/rcar/gen.c
View File

@ -155,6 +155,101 @@ static int rsnd_gen_regmap_init(struct rsnd_priv *priv,
return 0;
}
/*
* DMA read/write register offset
*
* RSND_xxx_I_N for Audio DMAC input
* RSND_xxx_O_N for Audio DMAC output
* RSND_xxx_I_P for Audio DMAC peri peri input
* RSND_xxx_O_P for Audio DMAC peri peri output
*
* ex) R-Car H2 case
* mod / DMAC in / DMAC out / DMAC PP in / DMAC pp out
* SSI : 0xec541000 / 0xec241008 / 0xec24100c / 0xec400000 / 0xec400000
* SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
* CMD : 0xec500000 / 0xec008000 0xec308000
*/
#define RDMA_SSI_I_N(addr, i) (addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
#define RDMA_SSI_O_N(addr, i) (addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
#define RDMA_SSI_I_P(addr, i) (addr ##_reg - 0x00141000 + (0x1000 * i))
#define RDMA_SSI_O_P(addr, i) (addr ##_reg - 0x00141000 + (0x1000 * i))
#define RDMA_SRC_I_N(addr, i) (addr ##_reg - 0x00500000 + (0x400 * i))
#define RDMA_SRC_O_N(addr, i) (addr ##_reg - 0x004fc000 + (0x400 * i))
#define RDMA_SRC_I_P(addr, i) (addr ##_reg - 0x00200000 + (0x400 * i))
#define RDMA_SRC_O_P(addr, i) (addr ##_reg - 0x001fc000 + (0x400 * i))
#define RDMA_CMD_O_N(addr, i) (addr ##_reg - 0x004f8000 + (0x400 * i))
#define RDMA_CMD_O_P(addr, i) (addr ##_reg - 0x001f8000 + (0x400 * i))
void rsnd_gen_dma_addr(struct rsnd_priv *priv,
struct rsnd_dma *dma,
struct dma_slave_config *cfg,
int is_play, int slave_id)
{
struct platform_device *pdev = rsnd_priv_to_pdev(priv);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
dma_addr_t ssi_reg = platform_get_resource(pdev,
IORESOURCE_MEM, RSND_GEN2_SSI)->start;
dma_addr_t src_reg = platform_get_resource(pdev,
IORESOURCE_MEM, RSND_GEN2_SCU)->start;
int is_ssi = !!(rsnd_io_to_mod_ssi(io) == mod);
int use_src = !!rsnd_io_to_mod_src(io);
int use_dvc = !!rsnd_io_to_mod_dvc(io);
int id = rsnd_mod_id(mod);
struct dma_addr {
dma_addr_t src_addr;
dma_addr_t dst_addr;
} dma_addrs[2][2][3] = {
{ /* SRC */
/* Capture */
{{ 0, 0 },
{ RDMA_SRC_O_N(src, id), 0 },
{ RDMA_CMD_O_N(src, id), 0 }},
/* Playback */
{{ 0, 0, },
{ 0, RDMA_SRC_I_N(src, id) },
{ 0, RDMA_SRC_I_N(src, id) }}
}, { /* SSI */
/* Capture */
{{ RDMA_SSI_O_N(ssi, id), 0 },
{ RDMA_SSI_O_P(ssi, id), RDMA_SRC_I_P(src, id) },
{ RDMA_SSI_O_P(ssi, id), RDMA_SRC_I_P(src, id) }},
/* Playback */
{{ 0, RDMA_SSI_I_N(ssi, id) },
{ RDMA_SRC_O_P(src, id), RDMA_SSI_I_P(ssi, id) },
{ RDMA_CMD_O_P(src, id), RDMA_SSI_I_P(ssi, id) }}
}
};
cfg->slave_id = slave_id;
cfg->src_addr = 0;
cfg->dst_addr = 0;
cfg->direction = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
/*
* gen1 uses default DMA addr
*/
if (rsnd_is_gen1(priv))
return;
/* it shouldn't happen */
if (use_dvc & !use_src) {
dev_err(dev, "DVC is selected without SRC\n");
return;
}
cfg->src_addr = dma_addrs[is_ssi][is_play][use_src + use_dvc].src_addr;
cfg->dst_addr = dma_addrs[is_ssi][is_play][use_src + use_dvc].dst_addr;
dev_dbg(dev, "dma%d addr - src : %x / dst : %x\n",
id, cfg->src_addr, cfg->dst_addr);
}
/*
* Gen2
*/

5
sound/soc/sh/rcar/rsnd.h
View File

@ -281,6 +281,11 @@ int rsnd_gen_probe(struct platform_device *pdev,
void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
struct rsnd_mod *mod,
enum rsnd_reg reg);
void rsnd_gen_dma_addr(struct rsnd_priv *priv,
struct rsnd_dma *dma,
struct dma_slave_config *cfg,
int is_play, int slave_id);
#define rsnd_is_gen1(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1)
#define rsnd_is_gen2(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN2)