| From c30f538ea1f7b9c6ba47ad29197aef1ea68dfeeb Mon Sep 17 00:00:00 2001 |
| From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| Date: Sun, 21 Jul 2013 21:36:57 -0700 |
| Subject: ASoC: add Renesas R-Car SSI feature |
| |
| Renesas R-Car series sound circuit consists of SSI and its peripheral. |
| But this peripheral circuit is different between |
| R-Car Generation1 (E1/M1/H1) and Generation2 (E2/M2/H2) |
| (Actually, there are many difference in Generation1 chips) |
| |
| As 1st protype, this patch adds SSI feature on this driver. |
| But, it is PIO sound playback support only at this point. |
| The DMA transfer, and capture feature will be supported in the future |
| |
| Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| Signed-off-by: Mark Brown <broonie@linaro.org> |
| (cherry picked from commit ae5c322303fff50b93d60e34c6563f1264a5941b) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| include/sound/rcar_snd.h | 23 +- |
| sound/soc/sh/rcar/Makefile | 2 +- |
| sound/soc/sh/rcar/core.c | 5 + |
| sound/soc/sh/rcar/gen.c | 24 +- |
| sound/soc/sh/rcar/rsnd.h | 23 ++ |
| sound/soc/sh/rcar/ssi.c | 588 +++++++++++++++++++++++++++++++++++++++++++++ |
| 6 files changed, 661 insertions(+), 4 deletions(-) |
| create mode 100644 sound/soc/sh/rcar/ssi.c |
| |
| diff --git a/include/sound/rcar_snd.h b/include/sound/rcar_snd.h |
| index 6babd6f7b537..99d8dd029906 100644 |
| --- a/include/sound/rcar_snd.h |
| +++ b/include/sound/rcar_snd.h |
| @@ -16,11 +16,30 @@ |
| |
| #define RSND_GEN1_SRU 0 |
| #define RSND_GEN1_ADG 1 |
| +#define RSND_GEN1_SSI 2 |
| |
| #define RSND_GEN2_SRU 0 |
| #define RSND_GEN2_ADG 1 |
| +#define RSND_GEN2_SSIU 2 |
| +#define RSND_GEN2_SSI 3 |
| |
| -#define RSND_BASE_MAX 2 |
| +#define RSND_BASE_MAX 4 |
| + |
| +/* |
| + * flags |
| + * |
| + * 0xA0000000 |
| + * |
| + * A : clock sharing settings |
| + */ |
| +#define RSND_SSI_CLK_PIN_SHARE (1 << 31) |
| +#define RSND_SSI_CLK_FROM_ADG (1 << 30) /* clock parent is master */ |
| +#define RSND_SSI_SYNC (1 << 29) /* SSI34_sync etc */ |
| + |
| +struct rsnd_ssi_platform_info { |
| + int pio_irq; |
| + u32 flags; |
| +}; |
| |
| struct rsnd_scu_platform_info { |
| u32 flags; |
| @@ -43,6 +62,8 @@ struct rsnd_dai_platform_info { |
| |
| struct rcar_snd_info { |
| u32 flags; |
| + struct rsnd_ssi_platform_info *ssi_info; |
| + int ssi_info_nr; |
| struct rsnd_scu_platform_info *scu_info; |
| int scu_info_nr; |
| struct rsnd_dai_platform_info *dai_info; |
| diff --git a/sound/soc/sh/rcar/Makefile b/sound/soc/sh/rcar/Makefile |
| index c11280cffcfe..0ff492df7929 100644 |
| --- a/sound/soc/sh/rcar/Makefile |
| +++ b/sound/soc/sh/rcar/Makefile |
| @@ -1,2 +1,2 @@ |
| -snd-soc-rcar-objs := core.o gen.o scu.o adg.o |
| +snd-soc-rcar-objs := core.o gen.o scu.o adg.o ssi.o |
| obj-$(CONFIG_SND_SOC_RCAR) += snd-soc-rcar.o |
| \ No newline at end of file |
| diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c |
| index e588d8a8ae40..9a5469d3f352 100644 |
| --- a/sound/soc/sh/rcar/core.c |
| +++ b/sound/soc/sh/rcar/core.c |
| @@ -639,6 +639,10 @@ static int rsnd_probe(struct platform_device *pdev) |
| if (ret < 0) |
| return ret; |
| |
| + ret = rsnd_ssi_probe(pdev, info, priv); |
| + if (ret < 0) |
| + return ret; |
| + |
| /* |
| * asoc register |
| */ |
| @@ -677,6 +681,7 @@ static int rsnd_remove(struct platform_device *pdev) |
| /* |
| * remove each module |
| */ |
| + rsnd_ssi_remove(pdev, priv); |
| rsnd_adg_remove(pdev, priv); |
| rsnd_scu_remove(pdev, priv); |
| rsnd_dai_remove(pdev, priv); |
| diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c |
| index ed21a136354f..5e4ae0da4352 100644 |
| --- a/sound/soc/sh/rcar/gen.c |
| +++ b/sound/soc/sh/rcar/gen.c |
| @@ -72,6 +72,12 @@ static int rsnd_gen1_path_init(struct rsnd_priv *priv, |
| else |
| id = info->ssi_id_capture; |
| |
| + /* SSI */ |
| + mod = rsnd_ssi_mod_get(priv, id); |
| + ret = rsnd_dai_connect(rdai, mod, io); |
| + if (ret < 0) |
| + return ret; |
| + |
| /* SCU */ |
| mod = rsnd_scu_mod_get(priv, id); |
| ret = rsnd_dai_connect(rdai, mod, io); |
| @@ -120,6 +126,12 @@ static void rsnd_gen1_reg_map_init(struct rsnd_gen *gen) |
| RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL3, 0x0, 0x18); |
| RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL4, 0x0, 0x1c); |
| RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL5, 0x0, 0x20); |
| + |
| + RSND_GEN1_REG_MAP(gen, SSI, SSICR, 0x40, 0x00); |
| + RSND_GEN1_REG_MAP(gen, SSI, SSISR, 0x40, 0x04); |
| + RSND_GEN1_REG_MAP(gen, SSI, SSITDR, 0x40, 0x08); |
| + RSND_GEN1_REG_MAP(gen, SSI, SSIRDR, 0x40, 0x0c); |
| + RSND_GEN1_REG_MAP(gen, SSI, SSIWSR, 0x40, 0x20); |
| } |
| |
| static int rsnd_gen1_probe(struct platform_device *pdev, |
| @@ -130,14 +142,17 @@ static int rsnd_gen1_probe(struct platform_device *pdev, |
| struct rsnd_gen *gen = rsnd_priv_to_gen(priv); |
| struct resource *sru_res; |
| struct resource *adg_res; |
| + struct resource *ssi_res; |
| |
| /* |
| * map address |
| */ |
| sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU); |
| adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG); |
| + ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI); |
| if (!sru_res || |
| - !adg_res) { |
| + !adg_res || |
| + !ssi_res) { |
| dev_err(dev, "Not enough SRU/SSI/ADG platform resources.\n"); |
| return -ENODEV; |
| } |
| @@ -146,8 +161,10 @@ static int rsnd_gen1_probe(struct platform_device *pdev, |
| |
| gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res); |
| gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res); |
| + gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res); |
| if (!gen->base[RSND_GEN1_SRU] || |
| - !gen->base[RSND_GEN1_ADG]) { |
| + !gen->base[RSND_GEN1_ADG] || |
| + !gen->base[RSND_GEN1_SSI]) { |
| dev_err(dev, "SRU/SSI/ADG ioremap failed\n"); |
| return -ENODEV; |
| } |
| @@ -159,8 +176,11 @@ static int rsnd_gen1_probe(struct platform_device *pdev, |
| gen->base[RSND_GEN1_SRU]); |
| dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, |
| gen->base[RSND_GEN1_ADG]); |
| + dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, |
| + gen->base[RSND_GEN1_SSI]); |
| |
| return 0; |
| + |
| } |
| |
| static void rsnd_gen1_remove(struct platform_device *pdev, |
| diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h |
| index 344fd59cb7fd..0e7727cc41db 100644 |
| --- a/sound/soc/sh/rcar/rsnd.h |
| +++ b/sound/soc/sh/rcar/rsnd.h |
| @@ -43,6 +43,13 @@ enum rsnd_reg { |
| RSND_REG_AUDIO_CLK_SEL4, |
| RSND_REG_AUDIO_CLK_SEL5, |
| |
| + /* SSI */ |
| + RSND_REG_SSICR, |
| + RSND_REG_SSISR, |
| + RSND_REG_SSITDR, |
| + RSND_REG_SSIRDR, |
| + RSND_REG_SSIWSR, |
| + |
| RSND_REG_MAX, |
| }; |
| |
| @@ -151,6 +158,7 @@ int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io); |
| int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io); |
| #define rsnd_dai_get_platform_info(rdai) ((rdai)->info) |
| +#define rsnd_io_to_runtime(io) ((io)->substream->runtime) |
| |
| void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt); |
| int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional); |
| @@ -210,6 +218,11 @@ struct rsnd_priv { |
| void *adg; |
| |
| /* |
| + * below value will be filled on rsnd_ssi_probe() |
| + */ |
| + void *ssiu; |
| + |
| + /* |
| * below value will be filled on rsnd_dai_probe() |
| */ |
| struct snd_soc_dai_driver *daidrv; |
| @@ -232,4 +245,14 @@ void rsnd_scu_remove(struct platform_device *pdev, |
| struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id); |
| #define rsnd_scu_nr(priv) ((priv)->scu_nr) |
| |
| +/* |
| + * R-Car SSI |
| + */ |
| +int rsnd_ssi_probe(struct platform_device *pdev, |
| + struct rcar_snd_info *info, |
| + struct rsnd_priv *priv); |
| +void rsnd_ssi_remove(struct platform_device *pdev, |
| + struct rsnd_priv *priv); |
| +struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id); |
| + |
| #endif |
| diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c |
| new file mode 100644 |
| index 000000000000..061ac7e88309 |
| --- /dev/null |
| +++ b/sound/soc/sh/rcar/ssi.c |
| @@ -0,0 +1,588 @@ |
| +/* |
| + * Renesas R-Car SSIU/SSI support |
| + * |
| + * Copyright (C) 2013 Renesas Solutions Corp. |
| + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| + * |
| + * Based on fsi.c |
| + * Kuninori Morimoto <morimoto.kuninori@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. |
| + */ |
| +#include <linux/delay.h> |
| +#include "rsnd.h" |
| +#define RSND_SSI_NAME_SIZE 16 |
| + |
| +/* |
| + * SSICR |
| + */ |
| +#define FORCE (1 << 31) /* Fixed */ |
| +#define UIEN (1 << 27) /* Underflow Interrupt Enable */ |
| +#define OIEN (1 << 26) /* Overflow Interrupt Enable */ |
| +#define IIEN (1 << 25) /* Idle Mode Interrupt Enable */ |
| +#define DIEN (1 << 24) /* Data Interrupt Enable */ |
| + |
| +#define DWL_8 (0 << 19) /* Data Word Length */ |
| +#define DWL_16 (1 << 19) /* Data Word Length */ |
| +#define DWL_18 (2 << 19) /* Data Word Length */ |
| +#define DWL_20 (3 << 19) /* Data Word Length */ |
| +#define DWL_22 (4 << 19) /* Data Word Length */ |
| +#define DWL_24 (5 << 19) /* Data Word Length */ |
| +#define DWL_32 (6 << 19) /* Data Word Length */ |
| + |
| +#define SWL_32 (3 << 16) /* R/W System Word Length */ |
| +#define SCKD (1 << 15) /* Serial Bit Clock Direction */ |
| +#define SWSD (1 << 14) /* Serial WS Direction */ |
| +#define SCKP (1 << 13) /* Serial Bit Clock Polarity */ |
| +#define SWSP (1 << 12) /* Serial WS Polarity */ |
| +#define SDTA (1 << 10) /* Serial Data Alignment */ |
| +#define DEL (1 << 8) /* Serial Data Delay */ |
| +#define CKDV(v) (v << 4) /* Serial Clock Division Ratio */ |
| +#define TRMD (1 << 1) /* Transmit/Receive Mode Select */ |
| +#define EN (1 << 0) /* SSI Module Enable */ |
| + |
| +/* |
| + * SSISR |
| + */ |
| +#define UIRQ (1 << 27) /* Underflow Error Interrupt Status */ |
| +#define OIRQ (1 << 26) /* Overflow Error Interrupt Status */ |
| +#define IIRQ (1 << 25) /* Idle Mode Interrupt Status */ |
| +#define DIRQ (1 << 24) /* Data Interrupt Status Flag */ |
| + |
| +struct rsnd_ssi { |
| + struct clk *clk; |
| + struct rsnd_ssi_platform_info *info; /* rcar_snd.h */ |
| + struct rsnd_ssi *parent; |
| + struct rsnd_mod mod; |
| + |
| + struct rsnd_dai *rdai; |
| + struct rsnd_dai_stream *io; |
| + u32 cr_own; |
| + u32 cr_clk; |
| + u32 cr_etc; |
| + int err; |
| + unsigned int usrcnt; |
| + unsigned int rate; |
| +}; |
| + |
| +struct rsnd_ssiu { |
| + u32 ssi_mode0; |
| + u32 ssi_mode1; |
| + |
| + int ssi_nr; |
| + struct rsnd_ssi *ssi; |
| +}; |
| + |
| +#define for_each_rsnd_ssi(pos, priv, i) \ |
| + for (i = 0; \ |
| + (i < rsnd_ssi_nr(priv)) && \ |
| + ((pos) = ((struct rsnd_ssiu *)((priv)->ssiu))->ssi + i); \ |
| + i++) |
| + |
| +#define rsnd_ssi_nr(priv) (((struct rsnd_ssiu *)((priv)->ssiu))->ssi_nr) |
| +#define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) |
| +#define rsnd_ssi_is_pio(ssi) ((ssi)->info->pio_irq > 0) |
| +#define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent) |
| +#define rsnd_rdai_is_clk_master(rdai) ((rdai)->clk_master) |
| +#define rsnd_ssi_mode_flags(p) ((p)->info->flags) |
| +#define rsnd_ssi_to_ssiu(ssi)\ |
| + (((struct rsnd_ssiu *)((ssi) - rsnd_mod_id(&(ssi)->mod))) - 1) |
| + |
| +static void rsnd_ssi_mode_init(struct rsnd_priv *priv, |
| + struct rsnd_ssiu *ssiu) |
| +{ |
| + struct rsnd_ssi *ssi; |
| + u32 flags; |
| + u32 val; |
| + int i; |
| + |
| + /* |
| + * SSI_MODE0 |
| + */ |
| + ssiu->ssi_mode0 = 0; |
| + for_each_rsnd_ssi(ssi, priv, i) |
| + ssiu->ssi_mode0 |= (1 << i); |
| + |
| + /* |
| + * SSI_MODE1 |
| + */ |
| +#define ssi_parent_set(p, sync, adg, ext) \ |
| + do { \ |
| + ssi->parent = ssiu->ssi + p; \ |
| + if (flags & RSND_SSI_CLK_FROM_ADG) \ |
| + val = adg; \ |
| + else \ |
| + val = ext; \ |
| + if (flags & RSND_SSI_SYNC) \ |
| + val |= sync; \ |
| + } while (0) |
| + |
| + ssiu->ssi_mode1 = 0; |
| + for_each_rsnd_ssi(ssi, priv, i) { |
| + flags = rsnd_ssi_mode_flags(ssi); |
| + |
| + if (!(flags & RSND_SSI_CLK_PIN_SHARE)) |
| + continue; |
| + |
| + val = 0; |
| + switch (i) { |
| + case 1: |
| + ssi_parent_set(0, (1 << 4), (0x2 << 0), (0x1 << 0)); |
| + break; |
| + case 2: |
| + ssi_parent_set(0, (1 << 4), (0x2 << 2), (0x1 << 2)); |
| + break; |
| + case 4: |
| + ssi_parent_set(3, (1 << 20), (0x2 << 16), (0x1 << 16)); |
| + break; |
| + case 8: |
| + ssi_parent_set(7, 0, 0, 0); |
| + break; |
| + } |
| + |
| + ssiu->ssi_mode1 |= val; |
| + } |
| +} |
| + |
| +static void rsnd_ssi_mode_set(struct rsnd_ssi *ssi) |
| +{ |
| + struct rsnd_ssiu *ssiu = rsnd_ssi_to_ssiu(ssi); |
| + |
| + rsnd_mod_write(&ssi->mod, SSI_MODE0, ssiu->ssi_mode0); |
| + rsnd_mod_write(&ssi->mod, SSI_MODE1, ssiu->ssi_mode1); |
| +} |
| + |
| +static void rsnd_ssi_status_check(struct rsnd_mod *mod, |
| + u32 bit) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + u32 status; |
| + int i; |
| + |
| + for (i = 0; i < 1024; i++) { |
| + status = rsnd_mod_read(mod, SSISR); |
| + if (status & bit) |
| + return; |
| + |
| + udelay(50); |
| + } |
| + |
| + dev_warn(dev, "status check failed\n"); |
| +} |
| + |
| +static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi, |
| + unsigned int rate) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + int i, j, ret; |
| + int adg_clk_div_table[] = { |
| + 1, 6, /* see adg.c */ |
| + }; |
| + int ssi_clk_mul_table[] = { |
| + 1, 2, 4, 8, 16, 6, 12, |
| + }; |
| + unsigned int main_rate; |
| + |
| + /* |
| + * Find best clock, and try to start ADG |
| + */ |
| + for (i = 0; i < ARRAY_SIZE(adg_clk_div_table); i++) { |
| + for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { |
| + |
| + /* |
| + * this driver is assuming that |
| + * system word is 64fs (= 2 x 32bit) |
| + * see rsnd_ssi_start() |
| + */ |
| + main_rate = rate / adg_clk_div_table[i] |
| + * 32 * 2 * ssi_clk_mul_table[j]; |
| + |
| + ret = rsnd_adg_ssi_clk_try_start(&ssi->mod, main_rate); |
| + if (0 == ret) { |
| + ssi->rate = rate; |
| + ssi->cr_clk = FORCE | SWL_32 | |
| + SCKD | SWSD | CKDV(j); |
| + |
| + dev_dbg(dev, "ssi%d outputs %u Hz\n", |
| + rsnd_mod_id(&ssi->mod), rate); |
| + |
| + return 0; |
| + } |
| + } |
| + } |
| + |
| + dev_err(dev, "unsupported clock rate\n"); |
| + return -EIO; |
| +} |
| + |
| +static void rsnd_ssi_master_clk_stop(struct rsnd_ssi *ssi) |
| +{ |
| + ssi->rate = 0; |
| + ssi->cr_clk = 0; |
| + rsnd_adg_ssi_clk_stop(&ssi->mod); |
| +} |
| + |
| +static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + u32 cr; |
| + |
| + if (0 == ssi->usrcnt) { |
| + clk_enable(ssi->clk); |
| + |
| + if (rsnd_rdai_is_clk_master(rdai)) { |
| + struct snd_pcm_runtime *runtime; |
| + |
| + runtime = rsnd_io_to_runtime(io); |
| + |
| + if (rsnd_ssi_clk_from_parent(ssi)) |
| + rsnd_ssi_hw_start(ssi->parent, rdai, io); |
| + else |
| + rsnd_ssi_master_clk_start(ssi, runtime->rate); |
| + } |
| + } |
| + |
| + cr = ssi->cr_own | |
| + ssi->cr_clk | |
| + ssi->cr_etc | |
| + EN; |
| + |
| + rsnd_mod_write(&ssi->mod, SSICR, cr); |
| + |
| + ssi->usrcnt++; |
| + |
| + dev_dbg(dev, "ssi%d hw started\n", rsnd_mod_id(&ssi->mod)); |
| +} |
| + |
| +static void rsnd_ssi_hw_stop(struct rsnd_ssi *ssi, |
| + struct rsnd_dai *rdai) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + u32 cr; |
| + |
| + if (0 == ssi->usrcnt) /* stop might be called without start */ |
| + return; |
| + |
| + ssi->usrcnt--; |
| + |
| + if (0 == ssi->usrcnt) { |
| + /* |
| + * disable all IRQ, |
| + * and, wait all data was sent |
| + */ |
| + cr = ssi->cr_own | |
| + ssi->cr_clk; |
| + |
| + rsnd_mod_write(&ssi->mod, SSICR, cr | EN); |
| + rsnd_ssi_status_check(&ssi->mod, DIRQ); |
| + |
| + /* |
| + * disable SSI, |
| + * and, wait idle state |
| + */ |
| + rsnd_mod_write(&ssi->mod, SSICR, cr); /* disabled all */ |
| + rsnd_ssi_status_check(&ssi->mod, IIRQ); |
| + |
| + if (rsnd_rdai_is_clk_master(rdai)) { |
| + if (rsnd_ssi_clk_from_parent(ssi)) |
| + rsnd_ssi_hw_stop(ssi->parent, rdai); |
| + else |
| + rsnd_ssi_master_clk_stop(ssi); |
| + } |
| + |
| + clk_disable(ssi->clk); |
| + } |
| + |
| + dev_dbg(dev, "ssi%d hw stopped\n", rsnd_mod_id(&ssi->mod)); |
| +} |
| + |
| +/* |
| + * SSI mod common functions |
| + */ |
| +static int rsnd_ssi_init(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
| + u32 cr; |
| + |
| + cr = FORCE; |
| + |
| + /* |
| + * always use 32bit system word for easy clock calculation. |
| + * see also rsnd_ssi_master_clk_enable() |
| + */ |
| + cr |= SWL_32; |
| + |
| + /* |
| + * init clock settings for SSICR |
| + */ |
| + switch (runtime->sample_bits) { |
| + case 16: |
| + cr |= DWL_16; |
| + break; |
| + case 32: |
| + cr |= DWL_24; |
| + break; |
| + default: |
| + return -EIO; |
| + } |
| + |
| + if (rdai->bit_clk_inv) |
| + cr |= SCKP; |
| + if (rdai->frm_clk_inv) |
| + cr |= SWSP; |
| + if (rdai->data_alignment) |
| + cr |= SDTA; |
| + if (rdai->sys_delay) |
| + cr |= DEL; |
| + if (rsnd_dai_is_play(rdai, io)) |
| + cr |= TRMD; |
| + |
| + /* |
| + * set ssi parameter |
| + */ |
| + ssi->rdai = rdai; |
| + ssi->io = io; |
| + ssi->cr_own = cr; |
| + ssi->err = -1; /* ignore 1st error */ |
| + |
| + rsnd_ssi_mode_set(ssi); |
| + |
| + dev_dbg(dev, "%s.%d init\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); |
| + |
| + return 0; |
| +} |
| + |
| +static int rsnd_ssi_quit(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + |
| + dev_dbg(dev, "%s.%d quit\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); |
| + |
| + if (ssi->err > 0) |
| + dev_warn(dev, "ssi under/over flow err = %d\n", ssi->err); |
| + |
| + ssi->rdai = NULL; |
| + ssi->io = NULL; |
| + ssi->cr_own = 0; |
| + ssi->err = 0; |
| + |
| + return 0; |
| +} |
| + |
| +static void rsnd_ssi_record_error(struct rsnd_ssi *ssi, u32 status) |
| +{ |
| + /* under/over flow error */ |
| + if (status & (UIRQ | OIRQ)) { |
| + ssi->err++; |
| + |
| + /* clear error status */ |
| + rsnd_mod_write(&ssi->mod, SSISR, 0); |
| + } |
| +} |
| + |
| +/* |
| + * SSI PIO |
| + */ |
| +static irqreturn_t rsnd_ssi_pio_interrupt(int irq, void *data) |
| +{ |
| + struct rsnd_ssi *ssi = data; |
| + struct rsnd_dai_stream *io = ssi->io; |
| + u32 status = rsnd_mod_read(&ssi->mod, SSISR); |
| + irqreturn_t ret = IRQ_NONE; |
| + |
| + if (io && (status & DIRQ)) { |
| + struct rsnd_dai *rdai = ssi->rdai; |
| + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
| + u32 *buf = (u32 *)(runtime->dma_area + |
| + rsnd_dai_pointer_offset(io, 0)); |
| + |
| + rsnd_ssi_record_error(ssi, status); |
| + |
| + /* |
| + * 8/16/32 data can be assesse to TDR/RDR register |
| + * directly as 32bit data |
| + * see rsnd_ssi_init() |
| + */ |
| + if (rsnd_dai_is_play(rdai, io)) |
| + rsnd_mod_write(&ssi->mod, SSITDR, *buf); |
| + else |
| + *buf = rsnd_mod_read(&ssi->mod, SSIRDR); |
| + |
| + rsnd_dai_pointer_update(io, sizeof(*buf)); |
| + |
| + ret = IRQ_HANDLED; |
| + } |
| + |
| + return ret; |
| +} |
| + |
| +static int rsnd_ssi_pio_start(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + |
| + /* enable PIO IRQ */ |
| + ssi->cr_etc = UIEN | OIEN | DIEN; |
| + |
| + rsnd_ssi_hw_start(ssi, rdai, io); |
| + |
| + dev_dbg(dev, "%s.%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); |
| + |
| + return 0; |
| +} |
| + |
| +static int rsnd_ssi_pio_stop(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
| + |
| + dev_dbg(dev, "%s.%d stop\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); |
| + |
| + ssi->cr_etc = 0; |
| + |
| + rsnd_ssi_hw_stop(ssi, rdai); |
| + |
| + return 0; |
| +} |
| + |
| +static struct rsnd_mod_ops rsnd_ssi_pio_ops = { |
| + .name = "ssi (pio)", |
| + .init = rsnd_ssi_init, |
| + .quit = rsnd_ssi_quit, |
| + .start = rsnd_ssi_pio_start, |
| + .stop = rsnd_ssi_pio_stop, |
| +}; |
| + |
| +/* |
| + * Non SSI |
| + */ |
| +static int rsnd_ssi_non(struct rsnd_mod *mod, |
| + struct rsnd_dai *rdai, |
| + struct rsnd_dai_stream *io) |
| +{ |
| + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + |
| + dev_dbg(dev, "%s\n", __func__); |
| + |
| + return 0; |
| +} |
| + |
| +static struct rsnd_mod_ops rsnd_ssi_non_ops = { |
| + .name = "ssi (non)", |
| + .init = rsnd_ssi_non, |
| + .quit = rsnd_ssi_non, |
| + .start = rsnd_ssi_non, |
| + .stop = rsnd_ssi_non, |
| +}; |
| + |
| +/* |
| + * ssi mod function |
| + */ |
| +struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) |
| +{ |
| + BUG_ON(id < 0 || id >= rsnd_ssi_nr(priv)); |
| + |
| + return &(((struct rsnd_ssiu *)(priv->ssiu))->ssi + id)->mod; |
| +} |
| + |
| +int rsnd_ssi_probe(struct platform_device *pdev, |
| + struct rcar_snd_info *info, |
| + struct rsnd_priv *priv) |
| +{ |
| + struct rsnd_ssi_platform_info *pinfo; |
| + struct device *dev = rsnd_priv_to_dev(priv); |
| + struct rsnd_mod_ops *ops; |
| + struct clk *clk; |
| + struct rsnd_ssiu *ssiu; |
| + struct rsnd_ssi *ssi; |
| + char name[RSND_SSI_NAME_SIZE]; |
| + int i, nr, ret; |
| + |
| + /* |
| + * init SSI |
| + */ |
| + nr = info->ssi_info_nr; |
| + ssiu = devm_kzalloc(dev, sizeof(*ssiu) + (sizeof(*ssi) * nr), |
| + GFP_KERNEL); |
| + if (!ssiu) { |
| + dev_err(dev, "SSI allocate failed\n"); |
| + return -ENOMEM; |
| + } |
| + |
| + priv->ssiu = ssiu; |
| + ssiu->ssi = (struct rsnd_ssi *)(ssiu + 1); |
| + ssiu->ssi_nr = nr; |
| + |
| + for_each_rsnd_ssi(ssi, priv, i) { |
| + pinfo = &info->ssi_info[i]; |
| + |
| + snprintf(name, RSND_SSI_NAME_SIZE, "ssi.%d", i); |
| + |
| + clk = clk_get(dev, name); |
| + if (IS_ERR(clk)) |
| + return PTR_ERR(clk); |
| + |
| + ssi->info = pinfo; |
| + ssi->clk = clk; |
| + |
| + ops = &rsnd_ssi_non_ops; |
| + |
| + /* |
| + * SSI PIO case |
| + */ |
| + if (rsnd_ssi_is_pio(ssi)) { |
| + ret = devm_request_irq(dev, pinfo->pio_irq, |
| + &rsnd_ssi_pio_interrupt, |
| + IRQF_SHARED, |
| + dev_name(dev), ssi); |
| + if (ret) { |
| + dev_err(dev, "SSI request interrupt failed\n"); |
| + return ret; |
| + } |
| + |
| + ops = &rsnd_ssi_pio_ops; |
| + } |
| + |
| + rsnd_mod_init(priv, &ssi->mod, ops, i); |
| + } |
| + |
| + rsnd_ssi_mode_init(priv, ssiu); |
| + |
| + dev_dbg(dev, "ssi probed\n"); |
| + |
| + return 0; |
| +} |
| + |
| +void rsnd_ssi_remove(struct platform_device *pdev, |
| + struct rsnd_priv *priv) |
| +{ |
| + struct rsnd_ssi *ssi; |
| + int i; |
| + |
| + for_each_rsnd_ssi(ssi, priv, i) |
| + clk_put(ssi->clk); |
| +} |
| -- |
| 1.8.5.rc3 |
| |