diff options
Diffstat (limited to 'sound/soc/sh/rcar/dma.c')
| -rw-r--r-- | sound/soc/sh/rcar/dma.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c index 9aca5ff791a3..1c494e521463 100644 --- a/sound/soc/sh/rcar/dma.c +++ b/sound/soc/sh/rcar/dma.c @@ -653,6 +653,36 @@ rsnd_gen2_dma_addr(struct rsnd_dai_stream *io, dma_addrs[is_ssi][is_play][use_src + use_cmd].in_addr; } +/* + * Gen4 DMA read/write register offset + * + * ex) R-Car V4H case + * mod / SYS-DMAC in / SYS-DMAC out + * SSI_SDMC: 0xec400000 / 0xec400000 / 0xec400000 + */ +#define RDMA_SSI_SDMC(addr, i) (addr + (0x8000 * i)) +static dma_addr_t +rsnd_gen4_dma_addr(struct rsnd_dai_stream *io, struct rsnd_mod *mod, + int is_play, int is_from) +{ + struct rsnd_priv *priv = rsnd_io_to_priv(io); + phys_addr_t addr = rsnd_gen_get_phy_addr(priv, RSND_GEN4_SDMC); + int id = rsnd_mod_id(mod); + int busif = rsnd_mod_id_sub(mod); + + /* + * SSI0 only is supported + */ + if (id != 0) { + struct device *dev = rsnd_priv_to_dev(priv); + + dev_err(dev, "This driver doesn't support non SSI0"); + return -EINVAL; + } + + return RDMA_SSI_SDMC(addr, busif); +} + static dma_addr_t rsnd_dma_addr(struct rsnd_dai_stream *io, struct rsnd_mod *mod, int is_play, int is_from) @@ -667,6 +697,8 @@ static dma_addr_t rsnd_dma_addr(struct rsnd_dai_stream *io, */ if (rsnd_is_gen1(priv)) return 0; + else if (rsnd_is_gen4(priv)) + return rsnd_gen4_dma_addr(io, mod, is_play, is_from); else return rsnd_gen2_dma_addr(io, mod, is_play, is_from); } @@ -891,6 +923,10 @@ int rsnd_dma_probe(struct rsnd_priv *priv) return 0; /* it will be PIO mode */ } + /* for Gen4 doesn't have DMA-pp */ + if (rsnd_is_gen4(priv)) + goto audmapp_end; + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp"); if (!res) { dev_err(dev, "lack of audmapp in DT\n"); @@ -902,7 +938,7 @@ int rsnd_dma_probe(struct rsnd_priv *priv) dmac->ppbase = devm_ioremap_resource(dev, res); if (IS_ERR(dmac->ppbase)) return PTR_ERR(dmac->ppbase); - +audmapp_end: priv->dma = dmac; /* dummy mem mod for debug */ |