diff options
Diffstat (limited to 'sound/soc/sh/rcar/dma.c')
| -rw-r--r-- | sound/soc/sh/rcar/dma.c | 120 |
1 files changed, 117 insertions, 3 deletions
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c index 37acd409e88c..188b4634939c 100644 --- a/sound/soc/sh/rcar/dma.c +++ b/sound/soc/sh/rcar/dma.c @@ -32,7 +32,6 @@ static void rsnd_dma_complete(void *data) } #define DMA_NAME_SIZE 16 -#define MOD_MAX 4 /* MEM/SSI/SRC/DVC */ static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod) { if (mod) @@ -97,6 +96,10 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma, struct rsnd_mod **mod_from, struct rsnd_mod **mod_to); +static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv, + struct rsnd_mod *mod, + int is_play, int is_from); + int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id) { struct device *dev = rsnd_priv_to_dev(priv); @@ -122,8 +125,8 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id) rsnd_dma_of_name(mod_from, mod_to, dma_name); cfg.direction = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM; - cfg.src_addr = rsnd_gen_dma_addr(priv, mod_from, is_play, 1); - cfg.dst_addr = rsnd_gen_dma_addr(priv, mod_to, is_play, 0); + cfg.src_addr = rsnd_dma_addr(priv, mod_from, is_play, 1); + cfg.dst_addr = rsnd_dma_addr(priv, mod_to, is_play, 0); cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; @@ -168,6 +171,117 @@ void rsnd_dma_quit(struct rsnd_dma *dma) dma->chan = NULL; } +/* + * 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 + * SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 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_SSIU_I_N(addr, i) (addr ##_reg - 0x00441000 + (0x1000 * i)) +#define RDMA_SSIU_O_N(addr, i) (addr ##_reg - 0x00441000 + (0x1000 * i)) + +#define RDMA_SSIU_I_P(addr, i) (addr ##_reg - 0x00141000 + (0x1000 * i)) +#define RDMA_SSIU_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)) + +static dma_addr_t +rsnd_gen2_dma_addr(struct rsnd_priv *priv, + struct rsnd_mod *mod, + int is_play, int is_from) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI); + phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU); + 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 out_addr; + dma_addr_t in_addr; + } dma_addrs[3][2][3] = { + /* SRC */ + {{{ 0, 0 }, + /* Capture */ + { RDMA_SRC_O_N(src, id), RDMA_SRC_I_P(src, id) }, + { RDMA_CMD_O_N(src, id), RDMA_SRC_I_P(src, id) } }, + /* Playback */ + {{ 0, 0, }, + { RDMA_SRC_O_P(src, id), RDMA_SRC_I_N(src, id) }, + { RDMA_CMD_O_P(src, id), RDMA_SRC_I_N(src, id) } } + }, + /* SSI */ + /* Capture */ + {{{ RDMA_SSI_O_N(ssi, id), 0 }, + { RDMA_SSIU_O_P(ssi, id), 0 }, + { RDMA_SSIU_O_P(ssi, id), 0 } }, + /* Playback */ + {{ 0, RDMA_SSI_I_N(ssi, id) }, + { 0, RDMA_SSIU_I_P(ssi, id) }, + { 0, RDMA_SSIU_I_P(ssi, id) } } + }, + /* SSIU */ + /* Capture */ + {{{ RDMA_SSIU_O_N(ssi, id), 0 }, + { RDMA_SSIU_O_P(ssi, id), 0 }, + { RDMA_SSIU_O_P(ssi, id), 0 } }, + /* Playback */ + {{ 0, RDMA_SSIU_I_N(ssi, id) }, + { 0, RDMA_SSIU_I_P(ssi, id) }, + { 0, RDMA_SSIU_I_P(ssi, id) } } }, + }; + + /* it shouldn't happen */ + if (use_dvc && !use_src) + dev_err(dev, "DVC is selected without SRC\n"); + + /* use SSIU or SSI ? */ + if (is_ssi && (0 == strcmp(rsnd_mod_dma_name(mod), "ssiu"))) + is_ssi++; + + return (is_from) ? + dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr : + dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr; +} + +static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv, + struct rsnd_mod *mod, + int is_play, int is_from) +{ + /* + * gen1 uses default DMA addr + */ + if (rsnd_is_gen1(priv)) + return 0; + + if (!mod) + return 0; + + return rsnd_gen2_dma_addr(priv, mod, is_play, is_from); +} + +#define MOD_MAX 4 /* MEM/SSI/SRC/DVC */ static void rsnd_dma_of_path(struct rsnd_dma *dma, int is_play, struct rsnd_mod **mod_from, |