| From 64f5ba8a014816f325db53d7ce02ee2027f659bb Mon Sep 17 00:00:00 2001 |
| From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| Date: Thu, 23 Jan 2014 18:42:00 -0800 |
| Subject: ASoC: rsnd: add Gen2 SRC and DMAEngine support |
| |
| Renesas sound Gen2 has SRC (= Sampling Rate Converter) |
| which needs 2 DMAC. |
| The data path image when you use SRC on Gen2 is |
| |
| [mem] -> Audio-DMAC -> SRC -> Audio-DMAC-peri-peri -> SSIU -> SSI |
| |
| This patch support SRC and DMAEnine. |
| It is tested on R-Car H2 Lager board |
| |
| Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| Signed-off-by: Mark Brown <broonie@linaro.org> |
| (cherry picked from commit 629509c5bc478c0343d94c8c70812396f44447fb) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| include/sound/rcar_snd.h | 6 +++ |
| sound/soc/sh/rcar/adg.c | 138 +++++++++++++++++++++++++++++++++++++++++++++++ |
| sound/soc/sh/rcar/gen.c | 26 +++++++++ |
| sound/soc/sh/rcar/rsnd.h | 25 +++++++++ |
| sound/soc/sh/rcar/scu.c | 117 ++++++++++++++++++++++++++++++++++++++++ |
| 5 files changed, 312 insertions(+) |
| |
| diff --git a/include/sound/rcar_snd.h b/include/sound/rcar_snd.h |
| index 1d19bfc2486d..2be05aea54f9 100644 |
| --- a/include/sound/rcar_snd.h |
| +++ b/include/sound/rcar_snd.h |
| @@ -56,9 +56,15 @@ struct rsnd_ssi_platform_info { |
| */ |
| #define RSND_SCU_USE_HPBIF (1 << 31) /* it needs RSND_SSI_DEPENDENT */ |
| |
| +#define RSND_SCU_SET(rate, _dma_id) \ |
| + { .flags = RSND_SCU_USE_HPBIF, .convert_rate = rate, .dma_id = _dma_id, } |
| +#define RSND_SCU_UNUSED \ |
| + { .flags = 0, .convert_rate = 0, .dma_id = 0, } |
| + |
| struct rsnd_scu_platform_info { |
| u32 flags; |
| u32 convert_rate; /* sampling rate convert */ |
| + int dma_id; /* for Gen2 SCU */ |
| }; |
| |
| /* |
| diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c |
| index 5bdffa480245..821791e15d04 100644 |
| --- a/sound/soc/sh/rcar/adg.c |
| +++ b/sound/soc/sh/rcar/adg.c |
| @@ -30,6 +30,144 @@ struct rsnd_adg { |
| i++, (pos) = adg->clk[i]) |
| #define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg) |
| |
| + |
| +static u32 rsnd_adg_ssi_ws_timing_gen2(struct rsnd_mod *mod) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + int id = rsnd_mod_id(mod); |
| + int ws = id; |
| + |
| + if (rsnd_ssi_is_pin_sharing(rsnd_ssi_mod_get(priv, id))) { |
| + switch (id) { |
| + case 1: |
| + case 2: |
| + ws = 0; |
| + break; |
| + case 4: |
| + ws = 3; |
| + break; |
| + case 8: |
| + ws = 7; |
| + break; |
| + } |
| + } |
| + |
| + return (0x6 + ws) << 8; |
| +} |
| + |
| +static int rsnd_adg_set_src_timsel_gen2(struct rsnd_dai *rdai, |
| + struct rsnd_mod *mod, |
| + struct rsnd_dai_stream *io, |
| + u32 timsel) |
| +{ |
| + int is_play = rsnd_dai_is_play(rdai, io); |
| + int id = rsnd_mod_id(mod); |
| + int shift = (id % 2) ? 16 : 0; |
| + u32 mask, ws; |
| + u32 in, out; |
| + |
| + ws = rsnd_adg_ssi_ws_timing_gen2(mod); |
| + |
| + in = (is_play) ? timsel : ws; |
| + out = (is_play) ? ws : timsel; |
| + |
| + in = in << shift; |
| + out = out << shift; |
| + mask = 0xffff << shift; |
| + |
| + switch (id / 2) { |
| + case 0: |
| + rsnd_mod_bset(mod, SRCIN_TIMSEL0, mask, in); |
| + rsnd_mod_bset(mod, SRCOUT_TIMSEL0, mask, out); |
| + break; |
| + case 1: |
| + rsnd_mod_bset(mod, SRCIN_TIMSEL1, mask, in); |
| + rsnd_mod_bset(mod, SRCOUT_TIMSEL1, mask, out); |
| + break; |
| + case 2: |
| + rsnd_mod_bset(mod, SRCIN_TIMSEL2, mask, in); |
| + rsnd_mod_bset(mod, SRCOUT_TIMSEL2, mask, out); |
| + break; |
| + case 3: |
| + rsnd_mod_bset(mod, SRCIN_TIMSEL3, mask, in); |
| + rsnd_mod_bset(mod, SRCOUT_TIMSEL3, mask, out); |
| + break; |
| + case 4: |
| + rsnd_mod_bset(mod, SRCIN_TIMSEL4, mask, in); |
| + rsnd_mod_bset(mod, SRCOUT_TIMSEL4, mask, out); |
| + break; |
| + } |
| + |
| + return 0; |
| +} |
| + |
| +int rsnd_adg_set_convert_clk_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io, |
| + unsigned int src_rate, |
| + unsigned int dst_rate) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct rsnd_adg *adg = rsnd_priv_to_adg(priv); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + int idx, sel, div, step; |
| + u32 val; |
| + unsigned int min, diff; |
| + unsigned int sel_rate [] = { |
| + clk_get_rate(adg->clk[CLKA]), /* 0000: CLKA */ |
| + clk_get_rate(adg->clk[CLKB]), /* 0001: CLKB */ |
| + clk_get_rate(adg->clk[CLKC]), /* 0010: CLKC */ |
| + adg->rbga_rate_for_441khz_div_6,/* 0011: RBGA */ |
| + adg->rbgb_rate_for_48khz_div_6, /* 0100: RBGB */ |
| + }; |
| + |
| + min = ~0; |
| + val = 0; |
| + for (sel = 0; sel < ARRAY_SIZE(sel_rate); sel++) { |
| + idx = 0; |
| + step = 2; |
| + |
| + if (!sel_rate[sel]) |
| + continue; |
| + |
| + for (div = 2; div <= 98304; div += step) { |
| + diff = abs(src_rate - sel_rate[sel] / div); |
| + if (min > diff) { |
| + val = (sel << 8) | idx; |
| + min = diff; |
| + } |
| + |
| + /* |
| + * step of 0_0000 / 0_0001 / 0_1101 |
| + * are out of order |
| + */ |
| + if ((idx > 2) && (idx % 2)) |
| + step *= 2; |
| + if (idx == 0x1c) { |
| + div += step; |
| + step *= 2; |
| + } |
| + idx++; |
| + } |
| + } |
| + |
| + if (min == ~0) { |
| + dev_err(dev, "no Input clock\n"); |
| + return -EIO; |
| + } |
| + |
| + return rsnd_adg_set_src_timsel_gen2(rdai, mod, io, val); |
| +} |
| + |
| +int rsnd_adg_set_convert_timing_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + u32 val = rsnd_adg_ssi_ws_timing_gen2(mod); |
| + |
| + return rsnd_adg_set_src_timsel_gen2(rdai, mod, io, val); |
| +} |
| + |
| int rsnd_adg_set_convert_clk_gen1(struct rsnd_priv *priv, |
| struct rsnd_mod *mod, |
| unsigned int src_rate, |
| diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c |
| index db486aae6b8b..3e03a8bc4f75 100644 |
| --- a/sound/soc/sh/rcar/gen.c |
| +++ b/sound/soc/sh/rcar/gen.c |
| @@ -229,14 +229,40 @@ static int rsnd_gen2_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) |
| RSND_GEN2_S_REG(gen, SSIU, SSI_MODE0, 0x800), |
| RSND_GEN2_S_REG(gen, SSIU, SSI_MODE1, 0x804), |
| /* FIXME: it needs SSI_MODE2/3 in the future */ |
| + RSND_GEN2_S_REG(gen, SSIU, SSI_CONTROL, 0x810), |
| + RSND_GEN2_M_REG(gen, SSIU, SSI_BUSIF_MODE, 0x0, 0x80), |
| + RSND_GEN2_M_REG(gen, SSIU, SSI_BUSIF_ADINR,0x4, 0x80), |
| + RSND_GEN2_M_REG(gen, SSIU, SSI_CTRL, 0x10, 0x80), |
| RSND_GEN2_M_REG(gen, SSIU, INT_ENABLE, 0x18, 0x80), |
| |
| + RSND_GEN2_M_REG(gen, SCU, SRC_BUSIF_MODE, 0x0, 0x20), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_ROUTE_MODE0,0xc, 0x20), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_CTRL, 0x10, 0x20), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_SWRSR, 0x200, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_SRCIR, 0x204, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_ADINR, 0x214, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_IFSCR, 0x21c, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_IFSVR, 0x220, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_SRCCR, 0x224, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_BSDSR, 0x22c, 0x40), |
| + RSND_GEN2_M_REG(gen, SCU, SRC_BSISR, 0x238, 0x40), |
| + |
| RSND_GEN2_S_REG(gen, ADG, BRRA, 0x00), |
| RSND_GEN2_S_REG(gen, ADG, BRRB, 0x04), |
| RSND_GEN2_S_REG(gen, ADG, SSICKR, 0x08), |
| RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), |
| RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), |
| RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL2, 0x14), |
| + RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL0, 0x34), |
| + RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL1, 0x38), |
| + RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL2, 0x3c), |
| + RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL3, 0x40), |
| + RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL4, 0x44), |
| + RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL0, 0x48), |
| + RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL1, 0x4c), |
| + RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL2, 0x50), |
| + RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL3, 0x54), |
| + RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL4, 0x58), |
| |
| RSND_GEN2_M_REG(gen, SSI, SSICR, 0x00, 0x40), |
| RSND_GEN2_M_REG(gen, SSI, SSISR, 0x04, 0x40), |
| diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h |
| index b2c717d2ba7e..8b66dc15fa73 100644 |
| --- a/sound/soc/sh/rcar/rsnd.h |
| +++ b/sound/soc/sh/rcar/rsnd.h |
| @@ -37,6 +37,11 @@ enum rsnd_reg { |
| RSND_REG_SRC_TMG_SEL1, /* for Gen1 */ |
| RSND_REG_SRC_TMG_SEL2, /* for Gen1 */ |
| RSND_REG_SRC_ROUTE_CTRL, /* for Gen1 */ |
| + RSND_REG_SRC_CTRL, /* for Gen2 */ |
| + RSND_REG_SSI_CTRL, /* for Gen2 */ |
| + RSND_REG_SSI_CONTROL, |
| + RSND_REG_SSI_BUSIF_MODE, /* for Gen2 */ |
| + RSND_REG_SSI_BUSIF_ADINR, /* for Gen2 */ |
| RSND_REG_SSI_MODE0, |
| RSND_REG_SSI_MODE1, |
| RSND_REG_INT_ENABLE, /* for Gen2 */ |
| @@ -49,6 +54,8 @@ enum rsnd_reg { |
| RSND_REG_SRC_IFSVR, |
| RSND_REG_SRC_SRCCR, |
| RSND_REG_SRC_MNFSR, /* for Gen1 */ |
| + RSND_REG_SRC_BSDSR, /* for Gen2 */ |
| + RSND_REG_SRC_BSISR, /* for Gen2 */ |
| |
| /* ADG */ |
| RSND_REG_BRRA, |
| @@ -60,6 +67,16 @@ enum rsnd_reg { |
| RSND_REG_AUDIO_CLK_SEL3, /* for Gen1 */ |
| RSND_REG_AUDIO_CLK_SEL4, /* for Gen1 */ |
| RSND_REG_AUDIO_CLK_SEL5, /* for Gen1 */ |
| + RSND_REG_SRCIN_TIMSEL0, /* for Gen2 */ |
| + RSND_REG_SRCIN_TIMSEL1, /* for Gen2 */ |
| + RSND_REG_SRCIN_TIMSEL2, /* for Gen2 */ |
| + RSND_REG_SRCIN_TIMSEL3, /* for Gen2 */ |
| + RSND_REG_SRCIN_TIMSEL4, /* for Gen2 */ |
| + RSND_REG_SRCOUT_TIMSEL0, /* for Gen2 */ |
| + RSND_REG_SRCOUT_TIMSEL1, /* for Gen2 */ |
| + RSND_REG_SRCOUT_TIMSEL2, /* for Gen2 */ |
| + RSND_REG_SRCOUT_TIMSEL3, /* for Gen2 */ |
| + RSND_REG_SRCOUT_TIMSEL4, /* for Gen2 */ |
| |
| /* SSI */ |
| RSND_REG_SSICR, |
| @@ -250,6 +267,14 @@ int rsnd_adg_set_convert_clk_gen1(struct rsnd_priv *priv, |
| struct rsnd_mod *mod, |
| unsigned int src_rate, |
| unsigned int dst_rate); |
| +int rsnd_adg_set_convert_clk_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io, |
| + unsigned int src_rate, |
| + unsigned int dst_rate); |
| +int rsnd_adg_set_convert_timing_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io); |
| |
| /* |
| * R-Car sound priv |
| diff --git a/sound/soc/sh/rcar/scu.c b/sound/soc/sh/rcar/scu.c |
| index 29d8990e3f0f..6e5c763e1040 100644 |
| --- a/sound/soc/sh/rcar/scu.c |
| +++ b/sound/soc/sh/rcar/scu.c |
| @@ -33,6 +33,8 @@ struct rsnd_scu { |
| container_of((_mod), struct rsnd_scu, mod) |
| #define rsnd_scu_hpbif_is_enable(scu) \ |
| (rsnd_scu_mode_flags(scu) & RSND_SCU_USE_HPBIF) |
| +#define rsnd_scu_dma_available(scu) \ |
| + rsnd_dma_available(rsnd_mod_to_dma(&(scu)->mod)) |
| |
| #define for_each_rsnd_scu(pos, priv, i) \ |
| for ((i) = 0; \ |
| @@ -472,6 +474,103 @@ static struct rsnd_mod_ops rsnd_scu_non_gen1_ops = { |
| /* |
| * Gen2 functions |
| */ |
| +static int rsnd_scu_set_convert_rate_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + int ret; |
| + |
| + ret = rsnd_scu_set_convert_rate(mod, rdai, io); |
| + if (ret < 0) |
| + return ret; |
| + |
| + rsnd_mod_write(mod, SSI_BUSIF_ADINR, rsnd_mod_read(mod, SRC_ADINR)); |
| + rsnd_mod_write(mod, SSI_BUSIF_MODE, rsnd_mod_read(mod, SRC_BUSIF_MODE)); |
| + |
| + rsnd_mod_write(mod, SRC_SRCCR, 0x00011110); |
| + |
| + rsnd_mod_write(mod, SRC_BSDSR, 0x01800000); |
| + rsnd_mod_write(mod, SRC_BSISR, 0x00100060); |
| + |
| + return 0; |
| +} |
| + |
| +static int rsnd_scu_set_convert_timing_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
| + struct rsnd_scu *scu = rsnd_mod_to_scu(mod); |
| + u32 convert_rate = rsnd_scu_convert_rate(scu); |
| + int ret; |
| + |
| + if (convert_rate) |
| + ret = rsnd_adg_set_convert_clk_gen2(mod, rdai, io, |
| + runtime->rate, |
| + convert_rate); |
| + else |
| + ret = rsnd_adg_set_convert_timing_gen2(mod, rdai, io); |
| + |
| + return ret; |
| +} |
| + |
| +static int rsnd_scu_init_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + int ret; |
| + |
| + ret = rsnd_scu_init(mod, rdai, io); |
| + if (ret < 0) |
| + return ret; |
| + |
| + ret = rsnd_scu_set_convert_rate_gen2(mod, rdai, io); |
| + if (ret < 0) |
| + return ret; |
| + |
| + ret = rsnd_scu_set_convert_timing_gen2(mod, rdai, io); |
| + if (ret < 0) |
| + return ret; |
| + |
| + return 0; |
| +} |
| + |
| +static int rsnd_scu_start_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_scu *scu = rsnd_mod_to_scu(mod); |
| + |
| + rsnd_dma_start(rsnd_mod_to_dma(&scu->mod)); |
| + |
| + rsnd_mod_write(mod, SSI_CTRL, 0x1); |
| + rsnd_mod_write(mod, SRC_CTRL, 0x11); |
| + |
| + return rsnd_scu_start(mod, rdai, io); |
| +} |
| + |
| +static int rsnd_scu_stop_gen2(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_scu *scu = rsnd_mod_to_scu(mod); |
| + |
| + rsnd_mod_write(mod, SSI_CTRL, 0); |
| + rsnd_mod_write(mod, SRC_CTRL, 0); |
| + |
| + rsnd_dma_stop(rsnd_mod_to_dma(&scu->mod)); |
| + |
| + return rsnd_scu_stop(mod, rdai, io); |
| +} |
| + |
| +static struct rsnd_mod_ops rsnd_scu_gen2_ops = { |
| + .name = "scu (gen2)", |
| + .init = rsnd_scu_init_gen2, |
| + .quit = rsnd_scu_quit, |
| + .start = rsnd_scu_start_gen2, |
| + .stop = rsnd_scu_stop_gen2, |
| +}; |
| + |
| static int rsnd_scu_start_non_gen2(struct rsnd_mod *mod, |
| struct rsnd_dai *rdai, |
| struct rsnd_dai_stream *io) |
| @@ -534,6 +633,17 @@ int rsnd_scu_probe(struct platform_device *pdev, |
| if (rsnd_scu_hpbif_is_enable(scu)) { |
| if (rsnd_is_gen1(priv)) |
| ops = &rsnd_scu_gen1_ops; |
| + if (rsnd_is_gen2(priv)) { |
| + struct rsnd_mod *ssi = rsnd_ssi_mod_get(priv, i); |
| + int ret = rsnd_dma_init(priv, |
| + rsnd_mod_to_dma(&scu->mod), |
| + rsnd_ssi_is_play(ssi), |
| + scu->info->dma_id); |
| + if (ret < 0) |
| + return ret; |
| + |
| + ops = &rsnd_scu_gen2_ops; |
| + } |
| } else { |
| if (rsnd_is_gen1(priv)) |
| ops = &rsnd_scu_non_gen1_ops; |
| @@ -553,4 +663,11 @@ int rsnd_scu_probe(struct platform_device *pdev, |
| void rsnd_scu_remove(struct platform_device *pdev, |
| struct rsnd_priv *priv) |
| { |
| + struct rsnd_scu *scu; |
| + int i; |
| + |
| + for_each_rsnd_scu(scu, priv, i) { |
| + if (rsnd_scu_dma_available(scu)) |
| + rsnd_dma_quit(priv, rsnd_mod_to_dma(&scu->mod)); |
| + } |
| } |
| -- |
| 2.1.2 |
| |