diff options
Diffstat (limited to 'sound/soc/sh/rcar')
| -rw-r--r-- | sound/soc/sh/rcar/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/adg.c | 442 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/core.c | 1120 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/dvc.c | 289 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/gen.c | 508 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/rsnd.h | 423 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/src.c | 687 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/ssi.c | 657 |
8 files changed, 4128 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/Makefile b/sound/soc/sh/rcar/Makefile new file mode 100644 index 00000000000..9ac53642980 --- /dev/null +++ b/sound/soc/sh/rcar/Makefile @@ -0,0 +1,2 @@ +snd-soc-rcar-objs := core.o gen.o src.o adg.o ssi.o dvc.o +obj-$(CONFIG_SND_SOC_RCAR) += snd-soc-rcar.o
\ No newline at end of file diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c new file mode 100644 index 00000000000..fc41a0e8b09 --- /dev/null +++ b/sound/soc/sh/rcar/adg.c @@ -0,0 +1,442 @@ +/* + * Helper routines for R-Car sound ADG. + * + * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/sh_clk.h> +#include "rsnd.h" + +#define CLKA 0 +#define CLKB 1 +#define CLKC 2 +#define CLKI 3 +#define CLKMAX 4 + +struct rsnd_adg { + struct clk *clk[CLKMAX]; + + int rbga_rate_for_441khz_div_6; /* RBGA */ + int rbgb_rate_for_48khz_div_6; /* RBGB */ + u32 ckr; +}; + +#define for_each_rsnd_clk(pos, adg, i) \ + for (i = 0; \ + (i < CLKMAX) && \ + ((pos) = adg->clk[i]); \ + i++) +#define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg) + + +static u32 rsnd_adg_ssi_ws_timing_gen2(struct rsnd_dai_stream *io) +{ + struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); + 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; +} + +int rsnd_adg_set_cmd_timsel_gen2(struct rsnd_dai *rdai, + struct rsnd_mod *mod, + struct rsnd_dai_stream *io) +{ + int id = rsnd_mod_id(mod); + int shift = (id % 2) ? 16 : 0; + u32 mask, val; + + val = rsnd_adg_ssi_ws_timing_gen2(io); + + val = val << shift; + mask = 0xffff << shift; + + rsnd_mod_bset(mod, CMDOUT_TIMSEL, mask, val); + + return 0; +} + +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(io); + + 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, ret; + u32 val, en; + 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; + en = 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; + en = 1 << (sel + 1); /* fixme */ + } + + /* + * 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; + } + + ret = rsnd_adg_set_src_timsel_gen2(rdai, mod, io, val); + if (ret < 0) { + dev_err(dev, "timsel error\n"); + return ret; + } + + rsnd_mod_bset(mod, DIV_EN, en, en); + + return 0; +} + +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(io); + + 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, + unsigned int dst_rate) +{ + struct rsnd_adg *adg = rsnd_priv_to_adg(priv); + struct device *dev = rsnd_priv_to_dev(priv); + int idx, sel, div, shift; + u32 mask, val; + int id = rsnd_mod_id(mod); + unsigned int sel_rate [] = { + clk_get_rate(adg->clk[CLKA]), /* 000: CLKA */ + clk_get_rate(adg->clk[CLKB]), /* 001: CLKB */ + clk_get_rate(adg->clk[CLKC]), /* 010: CLKC */ + 0, /* 011: MLBCLK (not used) */ + adg->rbga_rate_for_441khz_div_6,/* 100: RBGA */ + adg->rbgb_rate_for_48khz_div_6, /* 101: RBGB */ + }; + + /* find div (= 1/128, 1/256, 1/512, 1/1024, 1/2048 */ + for (sel = 0; sel < ARRAY_SIZE(sel_rate); sel++) { + for (div = 128, idx = 0; + div <= 2048; + div *= 2, idx++) { + if (src_rate == sel_rate[sel] / div) { + val = (idx << 4) | sel; + goto find_rate; + } + } + } + dev_err(dev, "can't find convert src clk\n"); + return -EINVAL; + +find_rate: + shift = (id % 4) * 8; + mask = 0xFF << shift; + val = val << shift; + + dev_dbg(dev, "adg convert src clk = %02x\n", val); + + switch (id / 4) { + case 0: + rsnd_mod_bset(mod, AUDIO_CLK_SEL3, mask, val); + break; + case 1: + rsnd_mod_bset(mod, AUDIO_CLK_SEL4, mask, val); + break; + case 2: + rsnd_mod_bset(mod, AUDIO_CLK_SEL5, mask, val); + break; + } + + /* + * Gen1 doesn't need dst_rate settings, + * since it uses SSI WS pin. + * see also rsnd_src_set_route_if_gen1() + */ + + return 0; +} + +static void rsnd_adg_set_ssi_clk(struct rsnd_mod *mod, u32 val) +{ + int id = rsnd_mod_id(mod); + int shift = (id % 4) * 8; + u32 mask = 0xFF << shift; + + val = val << shift; + + /* + * SSI 8 is not connected to ADG. + * it works with SSI 7 + */ + if (id == 8) + return; + + switch (id / 4) { + case 0: + rsnd_mod_bset(mod, AUDIO_CLK_SEL0, mask, val); + break; + case 1: + rsnd_mod_bset(mod, AUDIO_CLK_SEL1, mask, val); + break; + case 2: + rsnd_mod_bset(mod, AUDIO_CLK_SEL2, mask, val); + break; + } +} + +int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod) +{ + /* + * "mod" = "ssi" here. + * we can get "ssi id" from mod + */ + rsnd_adg_set_ssi_clk(mod, 0); + + return 0; +} + +int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int 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); + struct clk *clk; + int i; + u32 data; + int sel_table[] = { + [CLKA] = 0x1, + [CLKB] = 0x2, + [CLKC] = 0x3, + [CLKI] = 0x0, + }; + + dev_dbg(dev, "request clock = %d\n", rate); + + /* + * find suitable clock from + * AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC/AUDIO_CLKI. + */ + data = 0; + for_each_rsnd_clk(clk, adg, i) { + if (rate == clk_get_rate(clk)) { + data = sel_table[i]; + goto found_clock; + } + } + + /* + * find 1/6 clock from BRGA/BRGB + */ + if (rate == adg->rbga_rate_for_441khz_div_6) { + data = 0x10; + goto found_clock; + } + + if (rate == adg->rbgb_rate_for_48khz_div_6) { + data = 0x20; + goto found_clock; + } + + return -EIO; + +found_clock: + + /* see rsnd_adg_ssi_clk_init() */ + rsnd_mod_bset(mod, SSICKR, 0x00FF0000, adg->ckr); + rsnd_mod_write(mod, BRRA, 0x00000002); /* 1/6 */ + rsnd_mod_write(mod, BRRB, 0x00000002); /* 1/6 */ + + /* + * This "mod" = "ssi" here. + * we can get "ssi id" from mod + */ + rsnd_adg_set_ssi_clk(mod, data); + + dev_dbg(dev, "ADG: ssi%d selects clk%d = %d", + rsnd_mod_id(mod), i, rate); + + return 0; +} + +static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg) +{ + struct clk *clk; + unsigned long rate; + u32 ckr; + int i; + int brg_table[] = { + [CLKA] = 0x0, + [CLKB] = 0x1, + [CLKC] = 0x4, + [CLKI] = 0x2, + }; + + /* + * This driver is assuming that AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC + * have 44.1kHz or 48kHz base clocks for now. + * + * SSI itself can divide parent clock by 1/1 - 1/16 + * So, BRGA outputs 44.1kHz base parent clock 1/32, + * and, BRGB outputs 48.0kHz base parent clock 1/32 here. + * see + * rsnd_adg_ssi_clk_try_start() + */ + ckr = 0; + adg->rbga_rate_for_441khz_div_6 = 0; + adg->rbgb_rate_for_48khz_div_6 = 0; + for_each_rsnd_clk(clk, adg, i) { + rate = clk_get_rate(clk); + + if (0 == rate) /* not used */ + continue; + + /* RBGA */ + if (!adg->rbga_rate_for_441khz_div_6 && (0 == rate % 44100)) { + adg->rbga_rate_for_441khz_div_6 = rate / 6; + ckr |= brg_table[i] << 20; + } + + /* RBGB */ + if (!adg->rbgb_rate_for_48khz_div_6 && (0 == rate % 48000)) { + adg->rbgb_rate_for_48khz_div_6 = rate / 6; + ckr |= brg_table[i] << 16; + } + } + + adg->ckr = ckr; +} + +int rsnd_adg_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct rsnd_adg *adg; + struct device *dev = rsnd_priv_to_dev(priv); + struct clk *clk; + int i; + + adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL); + if (!adg) { + dev_err(dev, "ADG allocate failed\n"); + return -ENOMEM; + } + + adg->clk[CLKA] = devm_clk_get(dev, "clk_a"); + adg->clk[CLKB] = devm_clk_get(dev, "clk_b"); + adg->clk[CLKC] = devm_clk_get(dev, "clk_c"); + adg->clk[CLKI] = devm_clk_get(dev, "clk_i"); + + for_each_rsnd_clk(clk, adg, i) + dev_dbg(dev, "clk %d : %p\n", i, clk); + + rsnd_adg_ssi_clk_init(priv, adg); + + priv->adg = adg; + + dev_dbg(dev, "adg probed\n"); + + return 0; +} diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c new file mode 100644 index 00000000000..4e86265f625 --- /dev/null +++ b/sound/soc/sh/rcar/core.c @@ -0,0 +1,1120 @@ +/* + * Renesas R-Car SRU/SCU/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. + */ + +/* + * Renesas R-Car sound device structure + * + * Gen1 + * + * SRU : Sound Routing Unit + * - SRC : Sampling Rate Converter + * - CMD + * - CTU : Channel Count Conversion Unit + * - MIX : Mixer + * - DVC : Digital Volume and Mute Function + * - SSI : Serial Sound Interface + * + * Gen2 + * + * SCU : Sampling Rate Converter Unit + * - SRC : Sampling Rate Converter + * - CMD + * - CTU : Channel Count Conversion Unit + * - MIX : Mixer + * - DVC : Digital Volume and Mute Function + * SSIU : Serial Sound Interface Unit + * - SSI : Serial Sound Interface + */ + +/* + * driver data Image + * + * rsnd_priv + * | + * | ** this depends on Gen1/Gen2 + * | + * +- gen + * | + * | ** these depend on data path + * | ** gen and platform data control it + * | + * +- rdai[0] + * | | sru ssiu ssi + * | +- playback -> [mod] -> [mod] -> [mod] -> ... + * | | + * | | sru ssiu ssi + * | +- capture -> [mod] -> [mod] -> [mod] -> ... + * | + * +- rdai[1] + * | | sru ssiu ssi + * | +- playback -> [mod] -> [mod] -> [mod] -> ... + * | | + * | | sru ssiu ssi + * | +- capture -> [mod] -> [mod] -> [mod] -> ... + * ... + * | + * | ** these control ssi + * | + * +- ssi + * | | + * | +- ssi[0] + * | +- ssi[1] + * | +- ssi[2] + * | ... + * | + * | ** these control src + * | + * +- src + * | + * +- src[0] + * +- src[1] + * +- src[2] + * ... + * + * + * for_each_rsnd_dai(xx, priv, xx) + * rdai[0] => rdai[1] => rdai[2] => ... + * + * for_each_rsnd_mod(xx, rdai, xx) + * [mod] => [mod] => [mod] => ... + * + * rsnd_dai_call(xxx, fn ) + * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... + * + */ +#include <linux/pm_runtime.h> +#include <linux/shdma-base.h> +#include "rsnd.h" + +#define RSND_RATES SNDRV_PCM_RATE_8000_96000 +#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) + +static struct rsnd_of_data rsnd_of_data_gen1 = { + .flags = RSND_GEN1, +}; + +static struct rsnd_of_data rsnd_of_data_gen2 = { + .flags = RSND_GEN2, +}; + +static struct of_device_id rsnd_of_match[] = { + { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 }, + { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 }, + {}, +}; +MODULE_DEVICE_TABLE(of, rsnd_of_match); + +/* + * rsnd_platform functions + */ +#define rsnd_platform_call(priv, dai, func, param...) \ + (!(priv->info->func) ? 0 : \ + priv->info->func(param)) + +#define rsnd_is_enable_path(io, name) \ + ((io)->info ? (io)->info->name : NULL) +#define rsnd_info_id(priv, io, name) \ + ((io)->info->name - priv->info->name##_info) + +/* + * rsnd_mod functions + */ +char *rsnd_mod_name(struct rsnd_mod *mod) +{ + if (!mod || !mod->ops) + return "unknown"; + + return mod->ops->name; +} + +void rsnd_mod_init(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_mod_ops *ops, + enum rsnd_mod_type type, + int id) +{ + mod->priv = priv; + mod->id = id; + mod->ops = ops; + mod->type = type; +} + +/* + * rsnd_dma functions + */ +static void __rsnd_dma_start(struct rsnd_dma *dma); +static void rsnd_dma_continue(struct rsnd_dma *dma) +{ + /* push next A or B plane */ + dma->submit_loop = 1; + schedule_work(&dma->work); +} + +void rsnd_dma_start(struct rsnd_dma *dma) +{ + /* push both A and B plane*/ + dma->offset = 0; + dma->submit_loop = 2; + __rsnd_dma_start(dma); +} + +void rsnd_dma_stop(struct rsnd_dma *dma) +{ + dma->submit_loop = 0; + cancel_work_sync(&dma->work); + dmaengine_terminate_all(dma->chan); +} + +static void rsnd_dma_complete(void *data) +{ + struct rsnd_dma *dma = (struct rsnd_dma *)data; + struct rsnd_mod *mod = rsnd_dma_to_mod(dma); + struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma)); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + unsigned long flags; + + rsnd_lock(priv, flags); + + /* + * Renesas sound Gen1 needs 1 DMAC, + * Gen2 needs 2 DMAC. + * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri. + * But, Audio-DMAC-peri-peri doesn't have interrupt, + * and this driver is assuming that here. + * + * If Audio-DMAC-peri-peri has interrpt, + * rsnd_dai_pointer_update() will be called twice, + * ant it will breaks io->byte_pos + */ + if (dma->submit_loop) + rsnd_dma_continue(dma); + + rsnd_unlock(priv, flags); + + rsnd_dai_pointer_update(io, io->byte_per_period); +} + +static void __rsnd_dma_start(struct rsnd_dma *dma) +{ + struct rsnd_mod *mod = rsnd_dma_to_mod(dma); + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + struct device *dev = rsnd_priv_to_dev(priv); + struct dma_async_tx_descriptor *desc; + dma_addr_t buf; + size_t len = io->byte_per_period; + int i; + + for (i = 0; i < dma->submit_loop; i++) { + + buf = runtime->dma_addr + + rsnd_dai_pointer_offset(io, dma->offset + len); + dma->offset = len; + + desc = dmaengine_prep_slave_single( + dma->chan, buf, len, dma->dir, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!desc) { + dev_err(dev, "dmaengine_prep_slave_sg() fail\n"); + return; + } + + desc->callback = rsnd_dma_complete; + desc->callback_param = dma; + + if (dmaengine_submit(desc) < 0) { + dev_err(dev, "dmaengine_submit() fail\n"); + return; + } + + dma_async_issue_pending(dma->chan); + } +} + +static void rsnd_dma_do_work(struct work_struct *work) +{ + struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work); + + __rsnd_dma_start(dma); +} + +int rsnd_dma_available(struct rsnd_dma *dma) +{ + return !!dma->chan; +} + +#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) + return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d", + rsnd_mod_name(mod), rsnd_mod_id(mod)); + else + return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem"); + +} + +static void rsnd_dma_of_name(struct rsnd_dma *dma, + int is_play, char *dma_name) +{ + struct rsnd_mod *this = rsnd_dma_to_mod(dma); + struct rsnd_dai_stream *io = rsnd_mod_to_io(this); + struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io); + struct rsnd_mod *src = rsnd_io_to_mod_src(io); + struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); + struct rsnd_mod *mod[MOD_MAX]; + struct rsnd_mod *src_mod, *dst_mod; + int i, index; + + + for (i = 0; i < MOD_MAX; i++) + mod[i] = NULL; + + /* + * in play case... + * + * src -> dst + * + * mem -> SSI + * mem -> SRC -> SSI + * mem -> SRC -> DVC -> SSI + */ + mod[0] = NULL; /* for "mem" */ + index = 1; + for (i = 1; i < MOD_MAX; i++) { + if (!src) { + mod[i] = ssi; + break; + } else if (!dvc) { + mod[i] = src; + src = NULL; + } else { + mod[i] = dvc; + dvc = NULL; + } + + if (mod[i] == this) + index = i; + } + + if (is_play) { + src_mod = mod[index - 1]; + dst_mod = mod[index]; + } else { + src_mod = mod[index]; + dst_mod = mod[index - 1]; + } + + index = 0; + index = _rsnd_dma_of_name(dma_name + index, src_mod); + *(dma_name + index++) = '_'; + index = _rsnd_dma_of_name(dma_name + index, dst_mod); +} + +int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, + int is_play, int id) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct dma_slave_config cfg; + char dma_name[DMA_NAME_SIZE]; + dma_cap_mask_t mask; + int ret; + + if (dma->chan) { + dev_err(dev, "it already has dma channel\n"); + return -EIO; + } + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + if (dev->of_node) + rsnd_dma_of_name(dma, is_play, dma_name); + else + snprintf(dma_name, DMA_NAME_SIZE, + is_play ? "tx" : "rx"); + + dev_dbg(dev, "dma name : %s\n", dma_name); + + dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter, + (void *)id, dev, + dma_name); + if (!dma->chan) { + dev_err(dev, "can't get dma channel\n"); + return -EIO; + } + + rsnd_gen_dma_addr(priv, dma, &cfg, is_play, id); + + ret = dmaengine_slave_config(dma->chan, &cfg); + if (ret < 0) + goto rsnd_dma_init_err; + + dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + INIT_WORK(&dma->work, rsnd_dma_do_work); + + return 0; + +rsnd_dma_init_err: + rsnd_dma_quit(priv, dma); + + return ret; +} + +void rsnd_dma_quit(struct rsnd_priv *priv, + struct rsnd_dma *dma) +{ + if (dma->chan) + dma_release_channel(dma->chan); + + dma->chan = NULL; +} + +/* + * settting function + */ +u32 rsnd_get_adinr(struct rsnd_mod *mod) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + struct device *dev = rsnd_priv_to_dev(priv); + u32 adinr = runtime->channels; + + switch (runtime->sample_bits) { + case 16: + adinr |= (8 << 16); + break; + case 32: + adinr |= (0 << 16); + break; + default: + dev_warn(dev, "not supported sample bits\n"); + return 0; + } + + return adinr; +} + +/* + * rsnd_dai functions + */ +#define __rsnd_mod_call(mod, func, rdai...) \ +({ \ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ + struct device *dev = rsnd_priv_to_dev(priv); \ + dev_dbg(dev, "%s [%d] %s\n", \ + rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \ + (mod)->ops->func(mod, rdai); \ +}) + +#define rsnd_mod_call(mod, func, rdai...) \ + (!(mod) ? -ENODEV : \ + !((mod)->ops->func) ? 0 : \ + __rsnd_mod_call(mod, func, rdai)) + +#define rsnd_dai_call(fn, io, rdai...) \ +({ \ + struct rsnd_mod *mod; \ + int ret = 0, i; \ + for (i = 0; i < RSND_MOD_MAX; i++) { \ + mod = (io)->mod[i]; \ + if (!mod) \ + continue; \ + ret = rsnd_mod_call(mod, fn, rdai); \ + if (ret < 0) \ + break; \ + } \ + ret; \ +}) + +static int rsnd_dai_connect(struct rsnd_mod *mod, + struct rsnd_dai_stream *io) +{ + if (!mod) + return -EIO; + + if (io->mod[mod->type]) { + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_err(dev, "%s%d is not empty\n", + rsnd_mod_name(mod), + rsnd_mod_id(mod)); + return -EIO; + } + + io->mod[mod->type] = mod; + mod->io = io; + + return 0; +} + +int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai) +{ + int id = rdai - priv->rdai; + + if ((id < 0) || (id >= rsnd_rdai_nr(priv))) + return -EINVAL; + + return id; +} + +struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id) +{ + if ((id < 0) || (id >= rsnd_rdai_nr(priv))) + return NULL; + + return priv->rdai + id; +} + +static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) +{ + struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); + + return rsnd_dai_get(priv, dai->id); +} + +int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io) +{ + return &rdai->playback == io; +} + +/* + * rsnd_soc_dai functions + */ +int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) +{ + struct snd_pcm_substream *substream = io->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + int pos = io->byte_pos + additional; + + pos %= (runtime->periods * io->byte_per_period); + + return pos; +} + +void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) +{ + io->byte_pos += byte; + + if (io->byte_pos >= io->next_period_byte) { + struct snd_pcm_substream *substream = io->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + + io->period_pos++; + io->next_period_byte += io->byte_per_period; + + if (io->period_pos >= runtime->periods) { + io->byte_pos = 0; + io->period_pos = 0; + io->next_period_byte = io->byte_per_period; + } + + snd_pcm_period_elapsed(substream); + } +} + +static int rsnd_dai_stream_init(struct rsnd_dai_stream *io, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + io->substream = substream; + io->byte_pos = 0; + io->period_pos = 0; + io->byte_per_period = runtime->period_size * + runtime->channels * + samples_to_bytes(runtime, 1); + io->next_period_byte = io->byte_per_period; + + return 0; +} + +static +struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + + return rtd->cpu_dai; +} + +static +struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, + struct snd_pcm_substream *substream) +{ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + return &rdai->playback; + else + return &rdai->capture; +} + +static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); + int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io)); + int ret; + unsigned long flags; + + rsnd_lock(priv, flags); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + ret = rsnd_dai_stream_init(io, substream); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_platform_call(priv, dai, start, ssi_id); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(init, io, rdai); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(start, io, rdai); + if (ret < 0) + goto dai_trigger_end; + break; + case SNDRV_PCM_TRIGGER_STOP: + ret = rsnd_dai_call(stop, io, rdai); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(quit, io, rdai); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_platform_call(priv, dai, stop, ssi_id); + if (ret < 0) + goto dai_trigger_end; + break; + default: + ret = -EINVAL; + } + +dai_trigger_end: + rsnd_unlock(priv, flags); + + return ret; +} + +static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + + /* set master/slave audio interface */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + rdai->clk_master = 0; + break; + case SND_SOC_DAIFMT_CBS_CFS: + rdai->clk_master = 1; /* codec is slave, cpu is master */ + break; + default: + return -EINVAL; + } + + /* set clock inversion */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_IF: + rdai->bit_clk_inv = 0; + rdai->frm_clk_inv = 1; + break; + case SND_SOC_DAIFMT_IB_NF: + rdai->bit_clk_inv = 1; + rdai->frm_clk_inv = 0; + break; + case SND_SOC_DAIFMT_IB_IF: + rdai->bit_clk_inv = 1; + rdai->frm_clk_inv = 1; + break; + case SND_SOC_DAIFMT_NB_NF: + default: + rdai->bit_clk_inv = 0; + rdai->frm_clk_inv = 0; + break; + } + + /* set format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + rdai->sys_delay = 0; + rdai->data_alignment = 0; + break; + case SND_SOC_DAIFMT_LEFT_J: + rdai->sys_delay = 1; + rdai->data_alignment = 0; + break; + case SND_SOC_DAIFMT_RIGHT_J: + rdai->sys_delay = 1; + rdai->data_alignment = 1; + break; + } + + return 0; +} + +static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { + .trigger = rsnd_soc_dai_trigger, + .set_fmt = rsnd_soc_dai_set_fmt, +}; + +#define rsnd_path_parse(priv, io, type) \ +({ \ + struct rsnd_mod *mod; \ + int ret = 0; \ + int id = -1; \ + \ + if (rsnd_is_enable_path(io, type)) { \ + id = rsnd_info_id(priv, io, type); \ + if (id >= 0) { \ + mod = rsnd_##type##_mod_get(priv, id); \ + ret = rsnd_dai_connect(mod, io); \ + } \ + } \ + ret; \ +}) + +static int rsnd_path_init(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + int ret; + + /* + * Gen1 is created by SRU/SSI, and this SRU is base module of + * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) + * + * Easy image is.. + * Gen1 SRU = Gen2 SCU + SSIU + etc + * + * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is + * using fixed path. + */ + + /* SRC */ + ret = rsnd_path_parse(priv, io, src); + if (ret < 0) + return ret; + + /* SSI */ + ret = rsnd_path_parse(priv, io, ssi); + if (ret < 0) + return ret; + + /* DVC */ + ret = rsnd_path_parse(priv, io, dvc); + if (ret < 0) + return ret; + + return ret; +} + +static void rsnd_of_parse_dai(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct device_node *dai_node, *dai_np; + struct device_node *ssi_node, *ssi_np; + struct device_node *src_node, *src_np; + struct device_node *playback, *capture; + struct rsnd_dai_platform_info *dai_info; + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct device *dev = &pdev->dev; + int nr, i; + int dai_i, ssi_i, src_i; + + if (!of_data) + return; + + dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai"); + if (!dai_node) + return; + + nr = of_get_child_count(dai_node); + if (!nr) + return; + + dai_info = devm_kzalloc(dev, + sizeof(struct rsnd_dai_platform_info) * nr, + GFP_KERNEL); + if (!dai_info) { + dev_err(dev, "dai info allocation error\n"); + return; + } + + info->dai_info_nr = nr; + info->dai_info = dai_info; + + ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); + src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src"); + +#define mod_parse(name) \ +if (name##_node) { \ + struct rsnd_##name##_platform_info *name##_info; \ + \ + name##_i = 0; \ + for_each_child_of_node(name##_node, name##_np) { \ + name##_info = info->name##_info + name##_i; \ + \ + if (name##_np == playback) \ + dai_info->playback.name = name##_info; \ + if (name##_np == capture) \ + dai_info->capture.name = name##_info; \ + \ + name##_i++; \ + } \ +} + + /* + * parse all dai + */ + dai_i = 0; + for_each_child_of_node(dai_node, dai_np) { + dai_info = info->dai_info + dai_i; + + for (i = 0;; i++) { + + playback = of_parse_phandle(dai_np, "playback", i); + capture = of_parse_phandle(dai_np, "capture", i); + + if (!playback && !capture) + break; + + mod_parse(ssi); + mod_parse(src); + + if (playback) + of_node_put(playback); + if (capture) + of_node_put(capture); + } + + dai_i++; + } +} + +static int rsnd_dai_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct snd_soc_dai_driver *drv; + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct rsnd_dai *rdai; + struct rsnd_ssi_platform_info *pmod, *cmod; + struct device *dev = rsnd_priv_to_dev(priv); + int dai_nr; + int i; + + rsnd_of_parse_dai(pdev, of_data, priv); + + dai_nr = info->dai_info_nr; + if (!dai_nr) { + dev_err(dev, "no dai\n"); + return -EIO; + } + + drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL); + rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL); + if (!drv || !rdai) { + dev_err(dev, "dai allocate failed\n"); + return -ENOMEM; + } + + priv->rdai_nr = dai_nr; + priv->daidrv = drv; + priv->rdai = rdai; + + for (i = 0; i < dai_nr; i++) { + rdai[i].info = &info->dai_info[i]; + + pmod = rdai[i].info->playback.ssi; + cmod = rdai[i].info->capture.ssi; + + /* + * init rsnd_dai + */ + snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); + + /* + * init snd_soc_dai_driver + */ + drv[i].name = rdai[i].name; + drv[i].ops = &rsnd_soc_dai_ops; + if (pmod) { + drv[i].playback.rates = RSND_RATES; + drv[i].playback.formats = RSND_FMTS; + drv[i].playback.channels_min = 2; + drv[i].playback.channels_max = 2; + + rdai[i].playback.info = &info->dai_info[i].playback; + rsnd_path_init(priv, &rdai[i], &rdai[i].playback); + } + if (cmod) { + drv[i].capture.rates = RSND_RATES; + drv[i].capture.formats = RSND_FMTS; + drv[i].capture.channels_min = 2; + drv[i].capture.channels_max = 2; + + rdai[i].capture.info = &info->dai_info[i].capture; + rsnd_path_init(priv, &rdai[i], &rdai[i].capture); + } + + dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name, + pmod ? "play" : " -- ", + cmod ? "capture" : " -- "); + } + + return 0; +} + +/* + * pcm ops + */ +static struct snd_pcm_hardware rsnd_pcm_hardware = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE, + .buffer_bytes_max = 64 * 1024, + .period_bytes_min = 32, + .period_bytes_max = 8192, + .periods_min = 1, + .periods_max = 32, + .fifo_size = 256, +}; + +static int rsnd_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + int ret = 0; + + snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); + + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + + return ret; +} + +static int rsnd_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); + + return bytes_to_frames(runtime, io->byte_pos); +} + +static struct snd_pcm_ops rsnd_pcm_ops = { + .open = rsnd_pcm_open, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = rsnd_hw_params, + .hw_free = snd_pcm_lib_free_pages, + .pointer = rsnd_pointer, +}; + +/* + * snd_soc_platform + */ + +#define PREALLOC_BUFFER (32 * 1024) +#define PREALLOC_BUFFER_MAX (32 * 1024) + +static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) +{ + struct rsnd_priv *priv = snd_soc_dai_get_drvdata(rtd->cpu_dai); + struct rsnd_dai *rdai; + int i, ret; + + for_each_rsnd_dai(rdai, priv, i) { + ret = rsnd_dai_call(pcm_new, &rdai->playback, rdai, rtd); + if (ret) + return ret; + + ret = rsnd_dai_call(pcm_new, &rdai->capture, rdai, rtd); + if (ret) + return ret; + } + + return snd_pcm_lib_preallocate_pages_for_all( + rtd->pcm, + SNDRV_DMA_TYPE_DEV, + rtd->card->snd_card->dev, + PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); +} + +static void rsnd_pcm_free(struct snd_pcm *pcm) +{ + snd_pcm_lib_preallocate_free_for_all(pcm); +} + +static struct snd_soc_platform_driver rsnd_soc_platform = { + .ops = &rsnd_pcm_ops, + .pcm_new = rsnd_pcm_new, + .pcm_free = rsnd_pcm_free, +}; + +static const struct snd_soc_component_driver rsnd_soc_component = { + .name = "rsnd", +}; + +/* + * rsnd probe + */ +static int rsnd_probe(struct platform_device *pdev) +{ + struct rcar_snd_info *info; + struct rsnd_priv *priv; + struct device *dev = &pdev->dev; + struct rsnd_dai *rdai; + const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev); + const struct rsnd_of_data *of_data; + int (*probe_func[])(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) = { + rsnd_gen_probe, + rsnd_ssi_probe, + rsnd_src_probe, + rsnd_dvc_probe, + rsnd_adg_probe, + rsnd_dai_probe, + }; + int ret, i; + + info = NULL; + of_data = NULL; + if (of_id) { + info = devm_kzalloc(&pdev->dev, + sizeof(struct rcar_snd_info), GFP_KERNEL); + of_data = of_id->data; + } else { + info = pdev->dev.platform_data; + } + + if (!info) { + dev_err(dev, "driver needs R-Car sound information\n"); + return -ENODEV; + } + + /* + * init priv data + */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(dev, "priv allocate failed\n"); + return -ENODEV; + } + + priv->pdev = pdev; + priv->info = info; + spin_lock_init(&priv->lock); + + /* + * init each module + */ + for (i = 0; i < ARRAY_SIZE(probe_func); i++) { + ret = probe_func[i](pdev, of_data, priv); + if (ret) + return ret; + } + + for_each_rsnd_dai(rdai, priv, i) { + ret = rsnd_dai_call(probe, &rdai->playback, rdai); + if (ret) + return ret; + + ret = rsnd_dai_call(probe, &rdai->capture, rdai); + if (ret) + return ret; + } + + /* + * asoc register + */ + ret = snd_soc_register_platform(dev, &rsnd_soc_platform); + if (ret < 0) { + dev_err(dev, "cannot snd soc register\n"); + return ret; + } + + ret = snd_soc_register_component(dev, &rsnd_soc_component, + priv->daidrv, rsnd_rdai_nr(priv)); + if (ret < 0) { + dev_err(dev, "cannot snd dai register\n"); + goto exit_snd_soc; + } + + dev_set_drvdata(dev, priv); + + pm_runtime_enable(dev); + + dev_info(dev, "probed\n"); + return ret; + +exit_snd_soc: + snd_soc_unregister_platform(dev); + + return ret; +} + +static int rsnd_remove(struct platform_device *pdev) +{ + struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); + struct rsnd_dai *rdai; + int ret, i; + + pm_runtime_disable(&pdev->dev); + + for_each_rsnd_dai(rdai, priv, i) { + ret = rsnd_dai_call(remove, &rdai->playback, rdai); + if (ret) + return ret; + + ret = rsnd_dai_call(remove, &rdai->capture, rdai); + if (ret) + return ret; + } + + return 0; +} + +static struct platform_driver rsnd_driver = { + .driver = { + .name = "rcar_sound", + .of_match_table = rsnd_of_match, + }, + .probe = rsnd_probe, + .remove = rsnd_remove, +}; +module_platform_driver(rsnd_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Renesas R-Car audio driver"); +MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); +MODULE_ALIAS("platform:rcar-pcm-audio"); diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c new file mode 100644 index 00000000000..ed000700689 --- /dev/null +++ b/sound/soc/sh/rcar/dvc.c @@ -0,0 +1,289 @@ +/* + * Renesas R-Car DVC support + * + * Copyright (C) 2014 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@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 "rsnd.h" + +#define RSND_DVC_NAME_SIZE 16 +#define RSND_DVC_VOLUME_MAX 100 +#define RSND_DVC_VOLUME_NUM 2 + +#define DVC_NAME "dvc" + +struct rsnd_dvc { + struct rsnd_dvc_platform_info *info; /* rcar_snd.h */ + struct rsnd_mod mod; + struct clk *clk; + long volume[RSND_DVC_VOLUME_NUM]; +}; + +#define rsnd_mod_to_dvc(_mod) \ + container_of((_mod), struct rsnd_dvc, mod) + +#define for_each_rsnd_dvc(pos, priv, i) \ + for ((i) = 0; \ + ((i) < rsnd_dvc_nr(priv)) && \ + ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \ + i++) + +static void rsnd_dvc_volume_update(struct rsnd_mod *mod) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + u32 max = (0x00800000 - 1); + u32 vol[RSND_DVC_VOLUME_NUM]; + int i; + + for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) + vol[i] = max / RSND_DVC_VOLUME_MAX * dvc->volume[i]; + + rsnd_mod_write(mod, DVC_VOL0R, vol[0]); + rsnd_mod_write(mod, DVC_VOL1R, vol[1]); +} + +static int rsnd_dvc_probe_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_dbg(dev, "%s (Gen2) is probed\n", rsnd_mod_name(mod)); + + return 0; +} + +static int rsnd_dvc_init(struct rsnd_mod *dvc_mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(dvc_mod); + struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod); + struct rsnd_priv *priv = rsnd_mod_to_priv(dvc_mod); + struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io); + struct device *dev = rsnd_priv_to_dev(priv); + int dvc_id = rsnd_mod_id(dvc_mod); + int src_id = rsnd_mod_id(src_mod); + u32 route[] = { + [0] = 0x30000, + [1] = 0x30001, + [2] = 0x40000, + [3] = 0x10000, + [4] = 0x20000, + [5] = 0x40100 + }; + + if (src_id >= ARRAY_SIZE(route)) { + dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id); + return -EINVAL; + } + + clk_prepare_enable(dvc->clk); + + /* + * fixme + * it doesn't support CTU/MIX + */ + rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]); + + rsnd_mod_write(dvc_mod, DVC_SWRSR, 0); + rsnd_mod_write(dvc_mod, DVC_SWRSR, 1); + + rsnd_mod_write(dvc_mod, DVC_DVUIR, 1); + + rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod)); + + /* enable Volume */ + rsnd_mod_write(dvc_mod, DVC_DVUCR, 0x100); + + /* ch0/ch1 Volume */ + rsnd_dvc_volume_update(dvc_mod); + + rsnd_mod_write(dvc_mod, DVC_DVUIR, 0); + + rsnd_mod_write(dvc_mod, DVC_DVUER, 1); + + rsnd_adg_set_cmd_timsel_gen2(rdai, dvc_mod, io); + + return 0; +} + +static int rsnd_dvc_quit(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + + clk_disable_unprepare(dvc->clk); + + return 0; +} + +static int rsnd_dvc_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + rsnd_mod_write(mod, CMD_CTRL, 0x10); + + return 0; +} + +static int rsnd_dvc_stop(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + rsnd_mod_write(mod, CMD_CTRL, 0); + + return 0; +} + +static int rsnd_dvc_volume_info(struct snd_kcontrol *kctrl, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = RSND_DVC_VOLUME_NUM; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = RSND_DVC_VOLUME_MAX; + + return 0; +} + +static int rsnd_dvc_volume_get(struct snd_kcontrol *kctrl, + struct snd_ctl_elem_value *ucontrol) +{ + struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + int i; + + for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) + ucontrol->value.integer.value[i] = dvc->volume[i]; + + return 0; +} + +static int rsnd_dvc_volume_put(struct snd_kcontrol *kctrl, + struct snd_ctl_elem_value *ucontrol) +{ + struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + int i, change = 0; + + for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) { + if (ucontrol->value.integer.value[i] < 0 || + ucontrol->value.integer.value[i] > RSND_DVC_VOLUME_MAX) + return -EINVAL; + + change |= (ucontrol->value.integer.value[i] != dvc->volume[i]); + } + + if (change) { + for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) + dvc->volume[i] = ucontrol->value.integer.value[i]; + + rsnd_dvc_volume_update(mod); + } + + return change; +} + +static int rsnd_dvc_pcm_new(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct snd_soc_pcm_runtime *rtd) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + struct snd_card *card = rtd->card->snd_card; + struct snd_kcontrol *kctrl; + static struct snd_kcontrol_new knew = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Playback Volume", + .info = rsnd_dvc_volume_info, + .get = rsnd_dvc_volume_get, + .put = rsnd_dvc_volume_put, + }; + int ret; + + if (!rsnd_dai_is_play(rdai, io)) { + dev_err(dev, "DVC%d is connected to Capture DAI\n", + rsnd_mod_id(mod)); + return -EINVAL; + } + + kctrl = snd_ctl_new1(&knew, mod); + if (!kctrl) + return -ENOMEM; + + ret = snd_ctl_add(card, kctrl); + if (ret < 0) + return ret; + + return 0; +} + +static struct rsnd_mod_ops rsnd_dvc_ops = { + .name = DVC_NAME, + .probe = rsnd_dvc_probe_gen2, + .init = rsnd_dvc_init, + .quit = rsnd_dvc_quit, + .start = rsnd_dvc_start, + .stop = rsnd_dvc_stop, + .pcm_new = rsnd_dvc_pcm_new, +}; + +struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id) +{ + if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv))) + id = 0; + + return &((struct rsnd_dvc *)(priv->dvc) + id)->mod; +} + +int rsnd_dvc_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_dvc *dvc; + struct clk *clk; + char name[RSND_DVC_NAME_SIZE]; + int i, nr; + + nr = info->dvc_info_nr; + if (!nr) + return 0; + + /* This driver doesn't support Gen1 at this point */ + if (rsnd_is_gen1(priv)) { + dev_warn(dev, "CMD is not supported on Gen1\n"); + return -EINVAL; + } + + dvc = devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL); + if (!dvc) { + dev_err(dev, "CMD allocate failed\n"); + return -ENOMEM; + } + + priv->dvc_nr = nr; + priv->dvc = dvc; + + for_each_rsnd_dvc(dvc, priv, i) { + snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d", + DVC_NAME, i); + + clk = devm_clk_get(dev, name); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + dvc->info = &info->dvc_info[i]; + dvc->clk = clk; + + rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops, RSND_MOD_DVC, i); + + dev_dbg(dev, "CMD%d probed\n", i); + } + + return 0; +} diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c new file mode 100644 index 00000000000..1dd2b7d38c2 --- /dev/null +++ b/sound/soc/sh/rcar/gen.c @@ -0,0 +1,508 @@ +/* + * Renesas R-Car Gen1 SRU/SSI support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@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 "rsnd.h" + +struct rsnd_gen { + void __iomem *base[RSND_BASE_MAX]; + + struct rsnd_gen_ops *ops; + + struct regmap *regmap; + struct regmap_field *regs[RSND_REG_MAX]; +}; + +#define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen) + +#define RSND_REG_SET(gen, id, reg_id, offset, _id_offset, _id_size) \ + [id] = { \ + .reg = (unsigned int)gen->base[reg_id] + offset, \ + .lsb = 0, \ + .msb = 31, \ + .id_size = _id_size, \ + .id_offset = _id_offset, \ + } + +/* + * basic function + */ +static int rsnd_regmap_write32(void *context, const void *_data, size_t count) +{ + struct rsnd_priv *priv = context; + struct device *dev = rsnd_priv_to_dev(priv); + u32 *data = (u32 *)_data; + u32 val = data[1]; + void __iomem *reg = (void *)data[0]; + + iowrite32(val, reg); + + dev_dbg(dev, "w %p : %08x\n", reg, val); + + return 0; +} + +static int rsnd_regmap_read32(void *context, + const void *_data, size_t reg_size, + void *_val, size_t val_size) +{ + struct rsnd_priv *priv = context; + struct device *dev = rsnd_priv_to_dev(priv); + u32 *data = (u32 *)_data; + u32 *val = (u32 *)_val; + void __iomem *reg = (void *)data[0]; + + *val = ioread32(reg); + + dev_dbg(dev, "r %p : %08x\n", reg, *val); + + return 0; +} + +static struct regmap_bus rsnd_regmap_bus = { + .write = rsnd_regmap_write32, + .read = rsnd_regmap_read32, + .reg_format_endian_default = REGMAP_ENDIAN_NATIVE, + .val_format_endian_default = REGMAP_ENDIAN_NATIVE, +}; + +static int rsnd_is_accessible_reg(struct rsnd_priv *priv, + struct rsnd_gen *gen, enum rsnd_reg reg) +{ + if (!gen->regs[reg]) { + struct device *dev = rsnd_priv_to_dev(priv); + + dev_err(dev, "unsupported register access %x\n", reg); + return 0; + } + + return 1; +} + +u32 rsnd_read(struct rsnd_priv *priv, + struct rsnd_mod *mod, enum rsnd_reg reg) +{ + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + u32 val; + + if (!rsnd_is_accessible_reg(priv, gen, reg)) + return 0; + + regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val); + + return val; +} + +void rsnd_write(struct rsnd_priv *priv, + struct rsnd_mod *mod, + enum rsnd_reg reg, u32 data) +{ + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + + if (!rsnd_is_accessible_reg(priv, gen, reg)) + return; + + regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data); +} + +void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, + enum rsnd_reg reg, u32 mask, u32 data) +{ + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + + if (!rsnd_is_accessible_reg(priv, gen, reg)) + return; + + regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod), + mask, data); +} + +static int rsnd_gen_regmap_init(struct rsnd_priv *priv, + struct rsnd_gen *gen, + struct reg_field *regf) +{ + int i; + struct device *dev = rsnd_priv_to_dev(priv); + struct regmap_config regc; + + memset(®c, 0, sizeof(regc)); + regc.reg_bits = 32; + regc.val_bits = 32; + + gen->regmap = devm_regmap_init(dev, &rsnd_regmap_bus, priv, ®c); + if (IS_ERR(gen->regmap)) { + dev_err(dev, "regmap error %ld\n", PTR_ERR(gen->regmap)); + return PTR_ERR(gen->regmap); + } + + for (i = 0; i < RSND_REG_MAX; i++) { + gen->regs[i] = NULL; + if (!regf[i].reg) + continue; + + gen->regs[i] = devm_regmap_field_alloc(dev, gen->regmap, regf[i]); + if (IS_ERR(gen->regs[i])) + return PTR_ERR(gen->regs[i]); + + } + + 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 + */ + +/* single address mapping */ +#define RSND_GEN2_S_REG(gen, reg, id, offset) \ + RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, 0, 10) + +/* multi address mapping */ +#define RSND_GEN2_M_REG(gen, reg, id, offset, _id_offset) \ + RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, _id_offset, 10) + +static int rsnd_gen2_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) +{ + struct reg_field regf[RSND_REG_MAX] = { + 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_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, CMD_ROUTE_SLCT, 0x18c, 0x20), + RSND_GEN2_M_REG(gen, SCU, CMD_CTRL, 0x190, 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_M_REG(gen, SCU, DVC_SWRSR, 0xe00, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_DVUIR, 0xe04, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_ADINR, 0xe08, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_DVUCR, 0xe10, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_ZCMCR, 0xe14, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_VOL0R, 0xe28, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_VOL1R, 0xe2c, 0x100), + RSND_GEN2_M_REG(gen, SCU, DVC_DVUER, 0xe48, 0x100), + + 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, DIV_EN, 0x30), + 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_S_REG(gen, ADG, CMDOUT_TIMSEL, 0x5c), + + RSND_GEN2_M_REG(gen, SSI, SSICR, 0x00, 0x40), + RSND_GEN2_M_REG(gen, SSI, SSISR, 0x04, 0x40), + RSND_GEN2_M_REG(gen, SSI, SSITDR, 0x08, 0x40), + RSND_GEN2_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), + RSND_GEN2_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), + }; + + return rsnd_gen_regmap_init(priv, gen, regf); +} + +static int rsnd_gen2_probe(struct platform_device *pdev, + struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + struct resource *scu_res; + struct resource *adg_res; + struct resource *ssiu_res; + struct resource *ssi_res; + int ret; + + /* + * map address + */ + scu_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SCU); + adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_ADG); + ssiu_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SSIU); + ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SSI); + + gen->base[RSND_GEN2_SCU] = devm_ioremap_resource(dev, scu_res); + gen->base[RSND_GEN2_ADG] = devm_ioremap_resource(dev, adg_res); + gen->base[RSND_GEN2_SSIU] = devm_ioremap_resource(dev, ssiu_res); + gen->base[RSND_GEN2_SSI] = devm_ioremap_resource(dev, ssi_res); + if (IS_ERR(gen->base[RSND_GEN2_SCU]) || + IS_ERR(gen->base[RSND_GEN2_ADG]) || + IS_ERR(gen->base[RSND_GEN2_SSIU]) || + IS_ERR(gen->base[RSND_GEN2_SSI])) + return -ENODEV; + + ret = rsnd_gen2_regmap_init(priv, gen); + if (ret < 0) + return ret; + + dev_dbg(dev, "Gen2 device probed\n"); + dev_dbg(dev, "SCU : %pap => %p\n", &scu_res->start, + gen->base[RSND_GEN2_SCU]); + dev_dbg(dev, "ADG : %pap => %p\n", &adg_res->start, + gen->base[RSND_GEN2_ADG]); + dev_dbg(dev, "SSIU : %pap => %p\n", &ssiu_res->start, + gen->base[RSND_GEN2_SSIU]); + dev_dbg(dev, "SSI : %pap => %p\n", &ssi_res->start, + gen->base[RSND_GEN2_SSI]); + + return 0; +} + +/* + * Gen1 + */ + +/* single address mapping */ +#define RSND_GEN1_S_REG(gen, reg, id, offset) \ + RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, 0, 9) + +/* multi address mapping */ +#define RSND_GEN1_M_REG(gen, reg, id, offset, _id_offset) \ + RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, _id_offset, 9) + +static int rsnd_gen1_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) +{ + struct reg_field regf[RSND_REG_MAX] = { + RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_SEL, 0x00), + RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL0, 0x08), + RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL1, 0x0c), + RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL2, 0x10), + RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_CTRL, 0xc0), + RSND_GEN1_S_REG(gen, SRU, SSI_MODE0, 0xD0), + RSND_GEN1_S_REG(gen, SRU, SSI_MODE1, 0xD4), + RSND_GEN1_M_REG(gen, SRU, SRC_BUSIF_MODE, 0x20, 0x4), + RSND_GEN1_M_REG(gen, SRU, SRC_ROUTE_MODE0,0x50, 0x8), + RSND_GEN1_M_REG(gen, SRU, SRC_SWRSR, 0x200, 0x40), + RSND_GEN1_M_REG(gen, SRU, SRC_SRCIR, 0x204, 0x40), + RSND_GEN1_M_REG(gen, SRU, SRC_ADINR, 0x214, 0x40), + RSND_GEN1_M_REG(gen, SRU, SRC_IFSCR, 0x21c, 0x40), + RSND_GEN1_M_REG(gen, SRU, SRC_IFSVR, 0x220, 0x40), + RSND_GEN1_M_REG(gen, SRU, SRC_SRCCR, 0x224, 0x40), + RSND_GEN1_M_REG(gen, SRU, SRC_MNFSR, 0x228, 0x40), + + RSND_GEN1_S_REG(gen, ADG, BRRA, 0x00), + RSND_GEN1_S_REG(gen, ADG, BRRB, 0x04), + RSND_GEN1_S_REG(gen, ADG, SSICKR, 0x08), + RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), + RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), + RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL3, 0x18), + RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL4, 0x1c), + RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL5, 0x20), + + RSND_GEN1_M_REG(gen, SSI, SSICR, 0x00, 0x40), + RSND_GEN1_M_REG(gen, SSI, SSISR, 0x04, 0x40), + RSND_GEN1_M_REG(gen, SSI, SSITDR, 0x08, 0x40), + RSND_GEN1_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), + RSND_GEN1_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), + }; + + return rsnd_gen_regmap_init(priv, gen, regf); +} + +static int rsnd_gen1_probe(struct platform_device *pdev, + struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + struct resource *sru_res; + struct resource *adg_res; + struct resource *ssi_res; + int ret; + + /* + * 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); + + 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 (IS_ERR(gen->base[RSND_GEN1_SRU]) || + IS_ERR(gen->base[RSND_GEN1_ADG]) || + IS_ERR(gen->base[RSND_GEN1_SSI])) + return -ENODEV; + + ret = rsnd_gen1_regmap_init(priv, gen); + if (ret < 0) + return ret; + + dev_dbg(dev, "Gen1 device probed\n"); + dev_dbg(dev, "SRU : %pap => %p\n", &sru_res->start, + gen->base[RSND_GEN1_SRU]); + dev_dbg(dev, "ADG : %pap => %p\n", &adg_res->start, + gen->base[RSND_GEN1_ADG]); + dev_dbg(dev, "SSI : %pap => %p\n", &ssi_res->start, + gen->base[RSND_GEN1_SSI]); + + return 0; + +} + +/* + * Gen + */ +static void rsnd_of_parse_gen(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct rcar_snd_info *info = priv->info; + + if (!of_data) + return; + + info->flags = of_data->flags; +} + +int rsnd_gen_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_gen *gen; + int ret; + + rsnd_of_parse_gen(pdev, of_data, priv); + + gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL); + if (!gen) { + dev_err(dev, "GEN allocate failed\n"); + return -ENOMEM; + } + + priv->gen = gen; + + ret = -ENODEV; + if (rsnd_is_gen1(priv)) + ret = rsnd_gen1_probe(pdev, priv); + else if (rsnd_is_gen2(priv)) + ret = rsnd_gen2_probe(pdev, priv); + + if (ret < 0) + dev_err(dev, "unknown generation R-Car sound device\n"); + + return ret; +} diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h new file mode 100644 index 00000000000..39d98af5ee0 --- /dev/null +++ b/sound/soc/sh/rcar/rsnd.h @@ -0,0 +1,423 @@ +/* + * Renesas R-Car + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@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. + */ +#ifndef RSND_H +#define RSND_H + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/sh_dma.h> +#include <linux/workqueue.h> +#include <sound/rcar_snd.h> +#include <sound/soc.h> +#include <sound/pcm_params.h> + +/* + * pseudo register + * + * The register address offsets SRU/SCU/SSIU on Gen1/Gen2 are very different. + * This driver uses pseudo register in order to hide it. + * see gen1/gen2 for detail + */ +enum rsnd_reg { + /* SRU/SCU/SSIU */ + RSND_REG_SSI_MODE0, + RSND_REG_SSI_MODE1, + RSND_REG_SRC_BUSIF_MODE, + RSND_REG_SRC_ROUTE_MODE0, + RSND_REG_SRC_SWRSR, + RSND_REG_SRC_SRCIR, + RSND_REG_SRC_ADINR, + RSND_REG_SRC_IFSCR, + RSND_REG_SRC_IFSVR, + RSND_REG_SRC_SRCCR, + RSND_REG_CMD_ROUTE_SLCT, + RSND_REG_DVC_SWRSR, + RSND_REG_DVC_DVUIR, + RSND_REG_DVC_ADINR, + RSND_REG_DVC_DVUCR, + RSND_REG_DVC_ZCMCR, + RSND_REG_DVC_VOL0R, + RSND_REG_DVC_VOL1R, + RSND_REG_DVC_DVUER, + + /* ADG */ + RSND_REG_BRRA, + RSND_REG_BRRB, + RSND_REG_SSICKR, + RSND_REG_AUDIO_CLK_SEL0, + RSND_REG_AUDIO_CLK_SEL1, + + /* SSI */ + RSND_REG_SSICR, + RSND_REG_SSISR, + RSND_REG_SSITDR, + RSND_REG_SSIRDR, + RSND_REG_SSIWSR, + + /* SHARE see below */ + RSND_REG_SHARE01, + RSND_REG_SHARE02, + RSND_REG_SHARE03, + RSND_REG_SHARE04, + RSND_REG_SHARE05, + RSND_REG_SHARE06, + RSND_REG_SHARE07, + RSND_REG_SHARE08, + RSND_REG_SHARE09, + RSND_REG_SHARE10, + RSND_REG_SHARE11, + RSND_REG_SHARE12, + RSND_REG_SHARE13, + RSND_REG_SHARE14, + RSND_REG_SHARE15, + RSND_REG_SHARE16, + RSND_REG_SHARE17, + RSND_REG_SHARE18, + RSND_REG_SHARE19, + RSND_REG_SHARE20, + RSND_REG_SHARE21, + + RSND_REG_MAX, +}; + +/* Gen1 only */ +#define RSND_REG_SRC_ROUTE_SEL RSND_REG_SHARE01 +#define RSND_REG_SRC_TMG_SEL0 RSND_REG_SHARE02 +#define RSND_REG_SRC_TMG_SEL1 RSND_REG_SHARE03 +#define RSND_REG_SRC_TMG_SEL2 RSND_REG_SHARE04 +#define RSND_REG_SRC_ROUTE_CTRL RSND_REG_SHARE05 +#define RSND_REG_SRC_MNFSR RSND_REG_SHARE06 +#define RSND_REG_AUDIO_CLK_SEL3 RSND_REG_SHARE07 +#define RSND_REG_AUDIO_CLK_SEL4 RSND_REG_SHARE08 +#define RSND_REG_AUDIO_CLK_SEL5 RSND_REG_SHARE09 + +/* Gen2 only */ +#define RSND_REG_SRC_CTRL RSND_REG_SHARE01 +#define RSND_REG_SSI_CTRL RSND_REG_SHARE02 +#define RSND_REG_SSI_BUSIF_MODE RSND_REG_SHARE03 +#define RSND_REG_SSI_BUSIF_ADINR RSND_REG_SHARE04 +#define RSND_REG_INT_ENABLE RSND_REG_SHARE05 +#define RSND_REG_SRC_BSDSR RSND_REG_SHARE06 +#define RSND_REG_SRC_BSISR RSND_REG_SHARE07 +#define RSND_REG_DIV_EN RSND_REG_SHARE08 +#define RSND_REG_SRCIN_TIMSEL0 RSND_REG_SHARE09 +#define RSND_REG_SRCIN_TIMSEL1 RSND_REG_SHARE10 +#define RSND_REG_SRCIN_TIMSEL2 RSND_REG_SHARE11 +#define RSND_REG_SRCIN_TIMSEL3 RSND_REG_SHARE12 +#define RSND_REG_SRCIN_TIMSEL4 RSND_REG_SHARE13 +#define RSND_REG_SRCOUT_TIMSEL0 RSND_REG_SHARE14 +#define RSND_REG_SRCOUT_TIMSEL1 RSND_REG_SHARE15 +#define RSND_REG_SRCOUT_TIMSEL2 RSND_REG_SHARE16 +#define RSND_REG_SRCOUT_TIMSEL3 RSND_REG_SHARE17 +#define RSND_REG_SRCOUT_TIMSEL4 RSND_REG_SHARE18 +#define RSND_REG_AUDIO_CLK_SEL2 RSND_REG_SHARE19 +#define RSND_REG_CMD_CTRL RSND_REG_SHARE20 +#define RSND_REG_CMDOUT_TIMSEL RSND_REG_SHARE21 + +struct rsnd_of_data; +struct rsnd_priv; +struct rsnd_mod; +struct rsnd_dai; +struct rsnd_dai_stream; + +/* + * R-Car basic functions + */ +#define rsnd_mod_read(m, r) \ + rsnd_read(rsnd_mod_to_priv(m), m, RSND_REG_##r) +#define rsnd_mod_write(m, r, d) \ + rsnd_write(rsnd_mod_to_priv(m), m, RSND_REG_##r, d) +#define rsnd_mod_bset(m, r, s, d) \ + rsnd_bset(rsnd_mod_to_priv(m), m, RSND_REG_##r, s, d) + +u32 rsnd_read(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg); +void rsnd_write(struct rsnd_priv *priv, struct rsnd_mod *mod, + enum rsnd_reg reg, u32 data); +void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg, + u32 mask, u32 data); +u32 rsnd_get_adinr(struct rsnd_mod *mod); + +/* + * R-Car DMA + */ +struct rsnd_dma { + struct sh_dmae_slave slave; + struct work_struct work; + struct dma_chan *chan; + enum dma_data_direction dir; + + int submit_loop; + int offset; /* it cares A/B plane */ +}; + +void rsnd_dma_start(struct rsnd_dma *dma); +void rsnd_dma_stop(struct rsnd_dma *dma); +int rsnd_dma_available(struct rsnd_dma *dma); +int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, + int is_play, int id); +void rsnd_dma_quit(struct rsnd_priv *priv, + struct rsnd_dma *dma); + + +/* + * R-Car sound mod + */ +enum rsnd_mod_type { + RSND_MOD_SRC = 0, + RSND_MOD_SSI, + RSND_MOD_DVC, + RSND_MOD_MAX, +}; + +struct rsnd_mod_ops { + char *name; + int (*probe)(struct rsnd_mod *mod, + struct rsnd_dai *rdai); + int (*remove)(struct rsnd_mod *mod, + struct rsnd_dai *rdai); + int (*init)(struct rsnd_mod *mod, + struct rsnd_dai *rdai); + int (*quit)(struct rsnd_mod *mod, + struct rsnd_dai *rdai); + int (*start)(struct rsnd_mod *mod, + struct rsnd_dai *rdai); + int (*stop)(struct rsnd_mod *mod, + struct rsnd_dai *rdai); + int (*pcm_new)(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct snd_soc_pcm_runtime *rtd); +}; + +struct rsnd_dai_stream; +struct rsnd_mod { + int id; + enum rsnd_mod_type type; + struct rsnd_priv *priv; + struct rsnd_mod_ops *ops; + struct rsnd_dma dma; + struct rsnd_dai_stream *io; +}; + +#define rsnd_mod_to_priv(mod) ((mod)->priv) +#define rsnd_mod_to_dma(mod) (&(mod)->dma) +#define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma) +#define rsnd_mod_to_io(mod) ((mod)->io) +#define rsnd_mod_id(mod) ((mod)->id) + +void rsnd_mod_init(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_mod_ops *ops, + enum rsnd_mod_type type, + int id); +char *rsnd_mod_name(struct rsnd_mod *mod); + +/* + * R-Car sound DAI + */ +#define RSND_DAI_NAME_SIZE 16 +struct rsnd_dai_stream { + struct snd_pcm_substream *substream; + struct rsnd_mod *mod[RSND_MOD_MAX]; + struct rsnd_dai_path_info *info; /* rcar_snd.h */ + int byte_pos; + int period_pos; + int byte_per_period; + int next_period_byte; +}; +#define rsnd_io_to_mod_ssi(io) ((io)->mod[RSND_MOD_SSI]) +#define rsnd_io_to_mod_src(io) ((io)->mod[RSND_MOD_SRC]) +#define rsnd_io_to_mod_dvc(io) ((io)->mod[RSND_MOD_DVC]) + +struct rsnd_dai { + char name[RSND_DAI_NAME_SIZE]; + struct rsnd_dai_platform_info *info; /* rcar_snd.h */ + struct rsnd_dai_stream playback; + struct rsnd_dai_stream capture; + + unsigned int clk_master:1; + unsigned int bit_clk_inv:1; + unsigned int frm_clk_inv:1; + unsigned int sys_delay:1; + unsigned int data_alignment:1; +}; + +#define rsnd_rdai_nr(priv) ((priv)->rdai_nr) +#define for_each_rsnd_dai(rdai, priv, i) \ + for (i = 0; \ + (i < rsnd_rdai_nr(priv)) && \ + ((rdai) = rsnd_dai_get(priv, i)); \ + i++) + +struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id); +int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io); +int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai); +#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); +#define rsnd_dai_is_clk_master(rdai) ((rdai)->clk_master) + +/* + * R-Car Gen1/Gen2 + */ +int rsnd_gen_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv); +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) + +/* + * R-Car ADG + */ +int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod); +int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate); +int rsnd_adg_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv); +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); +int rsnd_adg_set_cmd_timsel_gen2(struct rsnd_dai *rdai, + struct rsnd_mod *mod, + struct rsnd_dai_stream *io); + +/* + * R-Car sound priv + */ +struct rsnd_of_data { + u32 flags; +}; + +struct rsnd_priv { + + struct platform_device *pdev; + struct rcar_snd_info *info; + spinlock_t lock; + + /* + * below value will be filled on rsnd_gen_probe() + */ + void *gen; + + /* + * below value will be filled on rsnd_src_probe() + */ + void *src; + int src_nr; + + /* + * below value will be filled on rsnd_adg_probe() + */ + void *adg; + + /* + * below value will be filled on rsnd_ssi_probe() + */ + void *ssi; + int ssi_nr; + + /* + * below value will be filled on rsnd_dvc_probe() + */ + void *dvc; + int dvc_nr; + + /* + * below value will be filled on rsnd_dai_probe() + */ + struct snd_soc_dai_driver *daidrv; + struct rsnd_dai *rdai; + int rdai_nr; +}; + +#define rsnd_priv_to_pdev(priv) ((priv)->pdev) +#define rsnd_priv_to_dev(priv) (&(rsnd_priv_to_pdev(priv)->dev)) +#define rsnd_priv_to_info(priv) ((priv)->info) +#define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags) +#define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags) + +#define rsnd_info_is_playback(priv, type) \ +({ \ + struct rcar_snd_info *info = rsnd_priv_to_info(priv); \ + int i, is_play = 0; \ + for (i = 0; i < info->dai_info_nr; i++) { \ + if (info->dai_info[i].playback.type == (type)->info) { \ + is_play = 1; \ + break; \ + } \ + } \ + is_play; \ +}) + +/* + * R-Car SRC + */ +int rsnd_src_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv); +struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id); +unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv, + struct rsnd_dai_stream *io, + struct snd_pcm_runtime *runtime); +int rsnd_src_ssi_mode_init(struct rsnd_mod *ssi_mod, + struct rsnd_dai *rdai); +int rsnd_src_enable_ssi_irq(struct rsnd_mod *ssi_mod, + struct rsnd_dai *rdai); + +#define rsnd_src_nr(priv) ((priv)->src_nr) + +/* + * R-Car SSI + */ +int rsnd_ssi_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv); +struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id); +int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod); + +/* + * R-Car DVC + */ +int rsnd_dvc_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv); +void rsnd_dvc_remove(struct platform_device *pdev, + struct rsnd_priv *priv); +struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id); + +#define rsnd_dvc_nr(priv) ((priv)->dvc_nr) + + +#endif diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c new file mode 100644 index 00000000000..200eda019bc --- /dev/null +++ b/sound/soc/sh/rcar/src.c @@ -0,0 +1,687 @@ +/* + * Renesas R-Car SRC support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@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 "rsnd.h" + +#define SRC_NAME "src" + +struct rsnd_src { + struct rsnd_src_platform_info *info; /* rcar_snd.h */ + struct rsnd_mod mod; + struct clk *clk; +}; + +#define RSND_SRC_NAME_SIZE 16 + +#define rsnd_src_convert_rate(p) ((p)->info->convert_rate) +#define rsnd_mod_to_src(_mod) \ + container_of((_mod), struct rsnd_src, mod) +#define rsnd_src_dma_available(src) \ + rsnd_dma_available(rsnd_mod_to_dma(&(src)->mod)) + +#define for_each_rsnd_src(pos, priv, i) \ + for ((i) = 0; \ + ((i) < rsnd_src_nr(priv)) && \ + ((pos) = (struct rsnd_src *)(priv)->src + i); \ + i++) + + +/* + * image of SRC (Sampling Rate Converter) + * + * 96kHz <-> +-----+ 48kHz +-----+ 48kHz +-------+ + * 48kHz <-> | SRC | <------> | SSI | <-----> | codec | + * 44.1kHz <-> +-----+ +-----+ +-------+ + * ... + * + */ + +/* + * src.c is caring... + * + * Gen1 + * + * [mem] -> [SRU] -> [SSI] + * |--------| + * + * Gen2 + * + * [mem] -> [SRC] -> [SSIU] -> [SSI] + * |-----------------| + */ + +/* + * How to use SRC bypass mode for debugging + * + * SRC has bypass mode, and it is useful for debugging. + * In Gen2 case, + * SRCm_MODE controls whether SRC is used or not + * SSI_MODE0 controls whether SSIU which receives SRC data + * is used or not. + * Both SRCm_MODE/SSI_MODE0 settings are needed if you use SRC, + * but SRC bypass mode needs SSI_MODE0 only. + * + * This driver request + * struct rsnd_src_platform_info { + * u32 convert_rate; + * int dma_id; + * } + * + * rsnd_src_convert_rate() indicates + * above convert_rate, and it controls + * whether SRC is used or not. + * + * ex) doesn't use SRC + * static struct rsnd_dai_platform_info rsnd_dai = { + * .playback = { .ssi = &rsnd_ssi[0], }, + * }; + * + * ex) uses SRC + * static struct rsnd_src_platform_info rsnd_src[] = { + * RSND_SCU(48000, 0), + * ... + * }; + * static struct rsnd_dai_platform_info rsnd_dai = { + * .playback = { .ssi = &rsnd_ssi[0], .src = &rsnd_src[0] }, + * }; + * + * ex) uses SRC bypass mode + * static struct rsnd_src_platform_info rsnd_src[] = { + * RSND_SCU(0, 0), + * ... + * }; + * static struct rsnd_dai_platform_info rsnd_dai = { + * .playback = { .ssi = &rsnd_ssi[0], .src = &rsnd_src[0] }, + * }; + * + */ + +/* + * Gen1/Gen2 common functions + */ +int rsnd_src_ssi_mode_init(struct rsnd_mod *ssi_mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(ssi_mod); + struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io); + int ssi_id = rsnd_mod_id(ssi_mod); + + /* + * SSI_MODE0 + */ + rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id), + src_mod ? 0 : (1 << ssi_id)); + + /* + * SSI_MODE1 + */ + if (rsnd_ssi_is_pin_sharing(ssi_mod)) { + int shift = -1; + switch (ssi_id) { + case 1: + shift = 0; + break; + case 2: + shift = 2; + break; + case 4: + shift = 16; + break; + } + + if (shift >= 0) + rsnd_mod_bset(ssi_mod, SSI_MODE1, + 0x3 << shift, + rsnd_dai_is_clk_master(rdai) ? + 0x2 << shift : 0x1 << shift); + } + + return 0; +} + +int rsnd_src_enable_ssi_irq(struct rsnd_mod *ssi_mod, + struct rsnd_dai *rdai) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod); + + /* enable PIO interrupt if Gen2 */ + if (rsnd_is_gen2(priv)) + rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0f000000); + + return 0; +} + +unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv, + struct rsnd_dai_stream *io, + struct snd_pcm_runtime *runtime) +{ + struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io); + struct rsnd_src *src; + unsigned int rate = 0; + + if (src_mod) { + src = rsnd_mod_to_src(src_mod); + + /* + * return convert rate if SRC is used, + * otherwise, return runtime->rate as usual + */ + rate = rsnd_src_convert_rate(src); + } + + if (!rate) + rate = runtime->rate; + + return rate; +} + +static int rsnd_src_set_convert_rate(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + struct rsnd_src *src = rsnd_mod_to_src(mod); + u32 convert_rate = rsnd_src_convert_rate(src); + u32 fsrate = 0; + + if (convert_rate) + fsrate = 0x0400000 / convert_rate * runtime->rate; + + /* set/clear soft reset */ + rsnd_mod_write(mod, SRC_SWRSR, 0); + rsnd_mod_write(mod, SRC_SWRSR, 1); + + /* + * Initialize the operation of the SRC internal circuits + * see rsnd_src_start() + */ + rsnd_mod_write(mod, SRC_SRCIR, 1); + + /* Set channel number and output bit length */ + rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr(mod)); + + /* Enable the initial value of IFS */ + if (fsrate) { + rsnd_mod_write(mod, SRC_IFSCR, 1); + + /* Set initial value of IFS */ + rsnd_mod_write(mod, SRC_IFSVR, fsrate); + } + + /* use DMA transfer */ + rsnd_mod_write(mod, SRC_BUSIF_MODE, 1); + + return 0; +} + +static int rsnd_src_init(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_src *src = rsnd_mod_to_src(mod); + + clk_prepare_enable(src->clk); + + return 0; +} + +static int rsnd_src_quit(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_src *src = rsnd_mod_to_src(mod); + + clk_disable_unprepare(src->clk); + + return 0; +} + +static int rsnd_src_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_src *src = rsnd_mod_to_src(mod); + + /* + * Cancel the initialization and operate the SRC function + * see rsnd_src_set_convert_rate() + */ + rsnd_mod_write(mod, SRC_SRCIR, 0); + + if (rsnd_src_convert_rate(src)) + rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1); + + return 0; +} + + +static int rsnd_src_stop(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_src *src = rsnd_mod_to_src(mod); + + if (rsnd_src_convert_rate(src)) + rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0); + + return 0; +} + +/* + * Gen1 functions + */ +static int rsnd_src_set_route_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct src_route_config { + u32 mask; + int shift; + } routes[] = { + { 0xF, 0, }, /* 0 */ + { 0xF, 4, }, /* 1 */ + { 0xF, 8, }, /* 2 */ + { 0x7, 12, }, /* 3 */ + { 0x7, 16, }, /* 4 */ + { 0x7, 20, }, /* 5 */ + { 0x7, 24, }, /* 6 */ + { 0x3, 28, }, /* 7 */ + { 0x3, 30, }, /* 8 */ + }; + u32 mask; + u32 val; + int id; + + id = rsnd_mod_id(mod); + if (id < 0 || id >= ARRAY_SIZE(routes)) + return -EIO; + + /* + * SRC_ROUTE_SELECT + */ + val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2; + val = val << routes[id].shift; + mask = routes[id].mask << routes[id].shift; + + rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val); + + return 0; +} + +static int rsnd_src_set_convert_timing_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_src *src = rsnd_mod_to_src(mod); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + u32 convert_rate = rsnd_src_convert_rate(src); + u32 mask; + u32 val; + int shift; + int id = rsnd_mod_id(mod); + int ret; + + /* + * SRC_TIMING_SELECT + */ + shift = (id % 4) * 8; + mask = 0x1F << shift; + + /* + * ADG is used as source clock if SRC was used, + * then, SSI WS is used as destination clock. + * SSI WS is used as source clock if SRC is not used + * (when playback, source/destination become reverse when capture) + */ + ret = 0; + if (convert_rate) { + /* use ADG */ + val = 0; + ret = rsnd_adg_set_convert_clk_gen1(priv, mod, + runtime->rate, + convert_rate); + } else if (8 == id) { + /* use SSI WS, but SRU8 is special */ + val = id << shift; + } else { + /* use SSI WS */ + val = (id + 1) << shift; + } + + if (ret < 0) + return ret; + + switch (id / 4) { + case 0: + rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val); + break; + case 1: + rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val); + break; + case 2: + rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val); + break; + } + + return 0; +} + +static int rsnd_src_set_convert_rate_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + int ret; + + ret = rsnd_src_set_convert_rate(mod, rdai); + if (ret < 0) + return ret; + + /* Select SRC mode (fixed value) */ + rsnd_mod_write(mod, SRC_SRCCR, 0x00010110); + + /* Set the restriction value of the FS ratio (98%) */ + rsnd_mod_write(mod, SRC_MNFSR, + rsnd_mod_read(mod, SRC_IFSVR) / 100 * 98); + + /* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */ + + return 0; +} + +static int rsnd_src_probe_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_dbg(dev, "%s (Gen1) is probed\n", rsnd_mod_name(mod)); + + return 0; +} + +static int rsnd_src_init_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + int ret; + + ret = rsnd_src_init(mod, rdai); + if (ret < 0) + return ret; + + ret = rsnd_src_set_route_gen1(mod, rdai); + if (ret < 0) + return ret; + + ret = rsnd_src_set_convert_rate_gen1(mod, rdai); + if (ret < 0) + return ret; + + ret = rsnd_src_set_convert_timing_gen1(mod, rdai); + if (ret < 0) + return ret; + + return 0; +} + +static int rsnd_src_start_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + int id = rsnd_mod_id(mod); + + rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id)); + + return rsnd_src_start(mod, rdai); +} + +static int rsnd_src_stop_gen1(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + int id = rsnd_mod_id(mod); + + rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0); + + return rsnd_src_stop(mod, rdai); +} + +static struct rsnd_mod_ops rsnd_src_gen1_ops = { + .name = SRC_NAME, + .probe = rsnd_src_probe_gen1, + .init = rsnd_src_init_gen1, + .quit = rsnd_src_quit, + .start = rsnd_src_start_gen1, + .stop = rsnd_src_stop_gen1, +}; + +/* + * Gen2 functions + */ +static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + int ret; + + ret = rsnd_src_set_convert_rate(mod, rdai); + if (ret < 0) + return ret; + + rsnd_mod_write(mod, SSI_BUSIF_ADINR, rsnd_get_adinr(mod)); + rsnd_mod_write(mod, SSI_BUSIF_MODE, 1); + + 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_src_set_convert_timing_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + struct rsnd_src *src = rsnd_mod_to_src(mod); + u32 convert_rate = rsnd_src_convert_rate(src); + 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_src_probe_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_src *src = rsnd_mod_to_src(mod); + struct device *dev = rsnd_priv_to_dev(priv); + int ret; + + ret = rsnd_dma_init(priv, + rsnd_mod_to_dma(mod), + rsnd_info_is_playback(priv, src), + src->info->dma_id); + if (ret < 0) + dev_err(dev, "SRC DMA failed\n"); + + dev_dbg(dev, "%s (Gen2) is probed\n", rsnd_mod_name(mod)); + + return ret; +} + +static int rsnd_src_remove_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + rsnd_dma_quit(rsnd_mod_to_priv(mod), rsnd_mod_to_dma(mod)); + + return 0; +} + +static int rsnd_src_init_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + int ret; + + ret = rsnd_src_init(mod, rdai); + if (ret < 0) + return ret; + + ret = rsnd_src_set_convert_rate_gen2(mod, rdai); + if (ret < 0) + return ret; + + ret = rsnd_src_set_convert_timing_gen2(mod, rdai); + if (ret < 0) + return ret; + + return 0; +} + +static int rsnd_src_start_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + struct rsnd_src *src = rsnd_mod_to_src(mod); + u32 val = rsnd_io_to_mod_dvc(io) ? 0x01 : 0x11; + + rsnd_dma_start(rsnd_mod_to_dma(&src->mod)); + + rsnd_mod_write(mod, SSI_CTRL, 0x1); + rsnd_mod_write(mod, SRC_CTRL, val); + + return rsnd_src_start(mod, rdai); +} + +static int rsnd_src_stop_gen2(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_src *src = rsnd_mod_to_src(mod); + + rsnd_mod_write(mod, SSI_CTRL, 0); + rsnd_mod_write(mod, SRC_CTRL, 0); + + rsnd_dma_stop(rsnd_mod_to_dma(&src->mod)); + + return rsnd_src_stop(mod, rdai); +} + +static struct rsnd_mod_ops rsnd_src_gen2_ops = { + .name = SRC_NAME, + .probe = rsnd_src_probe_gen2, + .remove = rsnd_src_remove_gen2, + .init = rsnd_src_init_gen2, + .quit = rsnd_src_quit, + .start = rsnd_src_start_gen2, + .stop = rsnd_src_stop_gen2, +}; + +struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id) +{ + if (WARN_ON(id < 0 || id >= rsnd_src_nr(priv))) + id = 0; + + return &((struct rsnd_src *)(priv->src) + id)->mod; +} + +static void rsnd_of_parse_src(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct device_node *src_node; + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct rsnd_src_platform_info *src_info; + struct device *dev = &pdev->dev; + int nr; + + if (!of_data) + return; + + src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src"); + if (!src_node) + return; + + nr = of_get_child_count(src_node); + if (!nr) + goto rsnd_of_parse_src_end; + + src_info = devm_kzalloc(dev, + sizeof(struct rsnd_src_platform_info) * nr, + GFP_KERNEL); + if (!src_info) { + dev_err(dev, "src info allocation error\n"); + goto rsnd_of_parse_src_end; + } + + info->src_info = src_info; + info->src_info_nr = nr; + +rsnd_of_parse_src_end: + of_node_put(src_node); +} + +int rsnd_src_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_src *src; + struct rsnd_mod_ops *ops; + struct clk *clk; + char name[RSND_SRC_NAME_SIZE]; + int i, nr; + + ops = NULL; + if (rsnd_is_gen1(priv)) + ops = &rsnd_src_gen1_ops; + if (rsnd_is_gen2(priv)) + ops = &rsnd_src_gen2_ops; + if (!ops) { + dev_err(dev, "unknown Generation\n"); + return -EIO; + } + + rsnd_of_parse_src(pdev, of_data, priv); + + /* + * init SRC + */ + nr = info->src_info_nr; + if (!nr) + return 0; + + src = devm_kzalloc(dev, sizeof(*src) * nr, GFP_KERNEL); + if (!src) { + dev_err(dev, "SRC allocate failed\n"); + return -ENOMEM; + } + + priv->src_nr = nr; + priv->src = src; + + for_each_rsnd_src(src, priv, i) { + snprintf(name, RSND_SRC_NAME_SIZE, "%s.%d", + SRC_NAME, i); + + clk = devm_clk_get(dev, name); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + src->info = &info->src_info[i]; + src->clk = clk; + + rsnd_mod_init(priv, &src->mod, ops, RSND_MOD_SRC, i); + + dev_dbg(dev, "SRC%d probed\n", i); + } + + return 0; +} diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c new file mode 100644 index 00000000000..2df723df5d1 --- /dev/null +++ b/sound/soc/sh/rcar/ssi.c @@ -0,0 +1,657 @@ +/* + * 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 DMEN (1 << 28) /* DMA Enable */ +#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 */ + +/* + * SSIWSR + */ +#define CONT (1 << 8) /* WS Continue Function */ + +#define SSI_NAME "ssi" + +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; + u32 cr_own; + u32 cr_clk; + u32 cr_etc; + int err; + unsigned int usrcnt; + unsigned int rate; +}; + +#define for_each_rsnd_ssi(pos, priv, i) \ + for (i = 0; \ + (i < rsnd_ssi_nr(priv)) && \ + ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \ + i++) + +#define rsnd_ssi_nr(priv) ((priv)->ssi_nr) +#define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) +#define rsnd_dma_to_ssi(dma) rsnd_mod_to_ssi(rsnd_dma_to_mod(dma)) +#define rsnd_ssi_pio_available(ssi) ((ssi)->info->pio_irq > 0) +#define rsnd_ssi_dma_available(ssi) \ + rsnd_dma_available(rsnd_mod_to_dma(&(ssi)->mod)) +#define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent) +#define rsnd_ssi_mode_flags(p) ((p)->info->flags) +#define rsnd_ssi_dai_id(ssi) ((ssi)->info->dai_id) + +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, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + 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; + unsigned int rate = rsnd_src_get_ssi_rate(priv, io, runtime); + + /* + * 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_init() + */ + 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_prepare_enable(ssi->clk); + + if (rsnd_dai_is_clk_master(rdai)) { + if (rsnd_ssi_clk_from_parent(ssi)) + rsnd_ssi_hw_start(ssi->parent, rdai, io); + else + rsnd_ssi_master_clk_start(ssi, io); + } + } + + 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_dai_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_unprepare(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_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + 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->cr_own = cr; + ssi->err = -1; /* ignore 1st error */ + + rsnd_src_ssi_mode_init(mod, rdai); + + return 0; +} + +static int rsnd_ssi_quit(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + 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); + + if (ssi->err > 0) + dev_warn(dev, "ssi under/over flow err = %d\n", ssi->err); + + ssi->rdai = 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_mod *mod = &ssi->mod; + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + u32 status = rsnd_mod_read(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(mod, SSITDR, *buf); + else + *buf = rsnd_mod_read(mod, SSIRDR); + + rsnd_dai_pointer_update(io, sizeof(*buf)); + + ret = IRQ_HANDLED; + } + + return ret; +} + +static int rsnd_ssi_pio_probe(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + 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); + int irq = ssi->info->pio_irq; + int ret; + + ret = devm_request_irq(dev, irq, + rsnd_ssi_pio_interrupt, + IRQF_SHARED, + dev_name(dev), ssi); + if (ret) + dev_err(dev, "SSI request interrupt failed\n"); + + dev_dbg(dev, "%s (PIO) is probed\n", rsnd_mod_name(mod)); + + return ret; +} + +static int rsnd_ssi_pio_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + + /* enable PIO IRQ */ + ssi->cr_etc = UIEN | OIEN | DIEN; + + rsnd_src_enable_ssi_irq(mod, rdai); + + rsnd_ssi_hw_start(ssi, rdai, io); + + return 0; +} + +static int rsnd_ssi_pio_stop(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + + ssi->cr_etc = 0; + + rsnd_ssi_hw_stop(ssi, rdai); + + return 0; +} + +static struct rsnd_mod_ops rsnd_ssi_pio_ops = { + .name = SSI_NAME, + .probe = rsnd_ssi_pio_probe, + .init = rsnd_ssi_init, + .quit = rsnd_ssi_quit, + .start = rsnd_ssi_pio_start, + .stop = rsnd_ssi_pio_stop, +}; + +static int rsnd_ssi_dma_probe(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + 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); + int dma_id = ssi->info->dma_id; + int ret; + + ret = rsnd_dma_init( + priv, rsnd_mod_to_dma(mod), + rsnd_info_is_playback(priv, ssi), + dma_id); + + if (ret < 0) + dev_err(dev, "SSI DMA failed\n"); + + dev_dbg(dev, "%s (DMA) is probed\n", rsnd_mod_name(mod)); + + return ret; +} + +static int rsnd_ssi_dma_remove(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + rsnd_dma_quit(rsnd_mod_to_priv(mod), rsnd_mod_to_dma(mod)); + + return 0; +} + +static int rsnd_ssi_dma_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); + struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); + + /* enable DMA transfer */ + ssi->cr_etc = DMEN; + + rsnd_dma_start(dma); + + rsnd_ssi_hw_start(ssi, ssi->rdai, io); + + /* enable WS continue */ + if (rsnd_dai_is_clk_master(rdai)) + rsnd_mod_write(&ssi->mod, SSIWSR, CONT); + + return 0; +} + +static int rsnd_ssi_dma_stop(struct rsnd_mod *mod, + struct rsnd_dai *rdai) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); + + ssi->cr_etc = 0; + + rsnd_ssi_record_error(ssi, rsnd_mod_read(mod, SSISR)); + + rsnd_ssi_hw_stop(ssi, rdai); + + rsnd_dma_stop(dma); + + return 0; +} + +static struct rsnd_mod_ops rsnd_ssi_dma_ops = { + .name = SSI_NAME, + .probe = rsnd_ssi_dma_probe, + .remove = rsnd_ssi_dma_remove, + .init = rsnd_ssi_init, + .quit = rsnd_ssi_quit, + .start = rsnd_ssi_dma_start, + .stop = rsnd_ssi_dma_stop, +}; + +/* + * Non SSI + */ +static struct rsnd_mod_ops rsnd_ssi_non_ops = { + .name = SSI_NAME, +}; + +/* + * ssi mod function + */ +struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) +{ + if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv))) + id = 0; + + return &((struct rsnd_ssi *)(priv->ssi) + id)->mod; +} + +int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + + return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE); +} + +static void rsnd_ssi_parent_clk_setup(struct rsnd_priv *priv, struct rsnd_ssi *ssi) +{ + if (!rsnd_ssi_is_pin_sharing(&ssi->mod)) + return; + + switch (rsnd_mod_id(&ssi->mod)) { + case 1: + case 2: + ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 0)); + break; + case 4: + ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 3)); + break; + case 8: + ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 7)); + break; + } +} + + +static void rsnd_of_parse_ssi(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct device_node *node; + struct device_node *np; + struct rsnd_ssi_platform_info *ssi_info; + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct device *dev = &pdev->dev; + int nr, i; + + if (!of_data) + return; + + node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); + if (!node) + return; + + nr = of_get_child_count(node); + if (!nr) + goto rsnd_of_parse_ssi_end; + + ssi_info = devm_kzalloc(dev, + sizeof(struct rsnd_ssi_platform_info) * nr, + GFP_KERNEL); + if (!ssi_info) { + dev_err(dev, "ssi info allocation error\n"); + goto rsnd_of_parse_ssi_end; + } + + info->ssi_info = ssi_info; + info->ssi_info_nr = nr; + + i = -1; + for_each_child_of_node(node, np) { + i++; + + ssi_info = info->ssi_info + i; + + /* + * pin settings + */ + if (of_get_property(np, "shared-pin", NULL)) + ssi_info->flags |= RSND_SSI_CLK_PIN_SHARE; + + /* + * irq + */ + ssi_info->pio_irq = irq_of_parse_and_map(np, 0); + + /* + * DMA + */ + ssi_info->dma_id = of_get_property(np, "pio-transfer", NULL) ? + 0 : 1; + } + +rsnd_of_parse_ssi_end: + of_node_put(node); +} + +int rsnd_ssi_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct rcar_snd_info *info = rsnd_priv_to_info(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_ssi *ssi; + char name[RSND_SSI_NAME_SIZE]; + int i, nr; + + rsnd_of_parse_ssi(pdev, of_data, priv); + + /* + * init SSI + */ + nr = info->ssi_info_nr; + ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL); + if (!ssi) { + dev_err(dev, "SSI allocate failed\n"); + return -ENOMEM; + } + + priv->ssi = ssi; + priv->ssi_nr = nr; + + for_each_rsnd_ssi(ssi, priv, i) { + pinfo = &info->ssi_info[i]; + + snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d", + SSI_NAME, i); + + clk = devm_clk_get(dev, name); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + ssi->info = pinfo; + ssi->clk = clk; + + ops = &rsnd_ssi_non_ops; + if (pinfo->dma_id > 0) + ops = &rsnd_ssi_dma_ops; + else if (rsnd_ssi_pio_available(ssi)) + ops = &rsnd_ssi_pio_ops; + + rsnd_mod_init(priv, &ssi->mod, ops, RSND_MOD_SSI, i); + + rsnd_ssi_parent_clk_setup(priv, ssi); + } + + return 0; +} |