--- /dev/null
+/*
+ * 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 "rsnd.h"
+
+#define RSND_RATES SNDRV_PCM_RATE_8000_96000
+#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
+
+static const struct rsnd_of_data rsnd_of_data_gen1 = {
+ .flags = RSND_GEN1,
+};
+
+static const struct rsnd_of_data rsnd_of_data_gen2 = {
+ .flags = RSND_GEN2,
+};
+
+static const 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;
+}
+
+struct dma_chan *rsnd_mod_dma_req(struct rsnd_mod *mod)
+{
+ if (!mod || !mod->ops || !mod->ops->dma_req)
+ return NULL;
+
+ return mod->ops->dma_req(mod);
+}
+
+int rsnd_mod_init(struct rsnd_mod *mod,
+ struct rsnd_mod_ops *ops,
+ struct clk *clk,
+ enum rsnd_mod_type type,
+ int id)
+{
+ int ret = clk_prepare(clk);
+
+ if (ret)
+ return ret;
+
+ mod->id = id;
+ mod->ops = ops;
+ mod->type = type;
+ mod->clk = clk;
+
+ return ret;
+}
+
+void rsnd_mod_quit(struct rsnd_mod *mod)
+{
+ if (mod->clk)
+ clk_unprepare(mod->clk);
+}
+
+/*
+ * 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, param...) \
+({ \
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
+ struct device *dev = rsnd_priv_to_dev(priv); \
+ u32 mask = (1 << __rsnd_mod_shift_##func) & ~(1 << 31); \
+ u32 call = __rsnd_mod_call_##func << __rsnd_mod_shift_##func; \
+ int ret = 0; \
+ if ((mod->status & mask) == call) { \
+ dev_dbg(dev, "%s[%d] %s\n", \
+ rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
+ ret = (mod)->ops->func(mod, param); \
+ mod->status = (mod->status & ~mask) | (~call & mask); \
+ } \
+ ret; \
+})
+
+#define rsnd_mod_call(mod, func, param...) \
+ (!(mod) ? -ENODEV : \
+ !((mod)->ops->func) ? 0 : \
+ __rsnd_mod_call(mod, func, param))
+
+#define rsnd_dai_call(fn, io, param...) \
+({ \
+ 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, param); \
+ 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;
+}
+
+static void rsnd_dai_disconnect(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io)
+{
+ mod->io = NULL;
+ io->mod[mod->type] = NULL;
+}
+
+struct rsnd_dai *rsnd_rdai_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_rdai_get(priv, dai->id);
+}
+
+/*
+ * 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, priv);
+ if (ret < 0)
+ goto dai_trigger_end;
+
+ ret = rsnd_dai_call(start, io, priv);
+ if (ret < 0)
+ goto dai_trigger_end;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ret = rsnd_dai_call(stop, io, priv);
+ if (ret < 0)
+ goto dai_trigger_end;
+
+ ret = rsnd_dai_call(quit, io, priv);
+ 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 format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ rdai->sys_delay = 0;
+ rdai->data_alignment = 0;
+ rdai->frm_clk_inv = 0;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ rdai->sys_delay = 1;
+ rdai->data_alignment = 0;
+ rdai->frm_clk_inv = 1;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ rdai->sys_delay = 1;
+ rdai->data_alignment = 1;
+ rdai->frm_clk_inv = 1;
+ break;
+ }
+
+ /* set clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_IF:
+ rdai->bit_clk_inv = rdai->bit_clk_inv;
+ rdai->frm_clk_inv = !rdai->frm_clk_inv;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ rdai->bit_clk_inv = !rdai->bit_clk_inv;
+ rdai->frm_clk_inv = rdai->frm_clk_inv;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ rdai->bit_clk_inv = !rdai->bit_clk_inv;
+ rdai->frm_clk_inv = !rdai->frm_clk_inv;
+ break;
+ case SND_SOC_DAIFMT_NB_NF:
+ default:
+ 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; \
+})
+
+#define rsnd_path_break(priv, io, type) \
+{ \
+ struct rsnd_mod *mod; \
+ 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); \
+ rsnd_dai_disconnect(mod, io); \
+ } \
+ } \
+}
+
+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 *dvc_node, *dvc_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, dvc_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");
+ dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
+
+#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);
+ mod_parse(dvc);
+
+ of_node_put(playback);
+ 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++) {
+
+ pmod = info->dai_info[i].playback.ssi;
+ cmod = info->dai_info[i].capture.ssi;
+
+ /*
+ * init rsnd_dai
+ */
+ snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
+ rdai[i].priv = priv;
+
+ /*
+ * init snd_soc_dai_driver
+ */
+ drv[i].name = rdai[i].name;
+ drv[i].ops = &rsnd_soc_dai_ops;
+ if (pmod) {
+ snprintf(rdai[i].playback.name, RSND_DAI_NAME_SIZE,
+ "DAI%d Playback", i);
+
+ drv[i].playback.rates = RSND_RATES;
+ drv[i].playback.formats = RSND_FMTS;
+ drv[i].playback.channels_min = 2;
+ drv[i].playback.channels_max = 2;
+ drv[i].playback.stream_name = rdai[i].playback.name;
+
+ rdai[i].playback.info = &info->dai_info[i].playback;
+ rdai[i].playback.rdai = rdai + i;
+ rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
+ }
+ if (cmod) {
+ snprintf(rdai[i].capture.name, RSND_DAI_NAME_SIZE,
+ "DAI%d Capture", i);
+
+ drv[i].capture.rates = RSND_RATES;
+ drv[i].capture.formats = RSND_FMTS;
+ drv[i].capture.channels_min = 2;
+ drv[i].capture.channels_max = 2;
+ drv[i].capture.stream_name = rdai[i].capture.name;
+
+ rdai[i].capture.info = &info->dai_info[i].capture;
+ rdai[i].capture.rdai = rdai + i;
+ 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,
+ .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)
+{
+ 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);
+ int ret;
+
+ ret = rsnd_dai_call(hw_params, io, substream, hw_params);
+ if (ret)
+ return ret;
+
+ 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_kcontrol
+ */
+#define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
+static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
+
+ if (cfg->texts) {
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = cfg->size;
+ uinfo->value.enumerated.items = cfg->max;
+ if (uinfo->value.enumerated.item >= cfg->max)
+ uinfo->value.enumerated.item = cfg->max - 1;
+ strlcpy(uinfo->value.enumerated.name,
+ cfg->texts[uinfo->value.enumerated.item],
+ sizeof(uinfo->value.enumerated.name));
+ } else {
+ uinfo->count = cfg->size;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = cfg->max;
+ uinfo->type = (cfg->max == 1) ?
+ SNDRV_CTL_ELEM_TYPE_BOOLEAN :
+ SNDRV_CTL_ELEM_TYPE_INTEGER;
+ }
+
+ return 0;
+}
+
+static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *uc)
+{
+ struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
+ int i;
+
+ for (i = 0; i < cfg->size; i++)
+ if (cfg->texts)
+ uc->value.enumerated.item[i] = cfg->val[i];
+ else
+ uc->value.integer.value[i] = cfg->val[i];
+
+ return 0;
+}
+
+static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *uc)
+{
+ struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
+ struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
+ int i, change = 0;
+
+ for (i = 0; i < cfg->size; i++) {
+ if (cfg->texts) {
+ change |= (uc->value.enumerated.item[i] != cfg->val[i]);
+ cfg->val[i] = uc->value.enumerated.item[i];
+ } else {
+ change |= (uc->value.integer.value[i] != cfg->val[i]);
+ cfg->val[i] = uc->value.integer.value[i];
+ }
+ }
+
+ if (change)
+ cfg->update(mod);
+
+ return change;
+}
+
+static int __rsnd_kctrl_new(struct rsnd_mod *mod,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ struct rsnd_kctrl_cfg *cfg,
+ void (*update)(struct rsnd_mod *mod))
+{
+ struct snd_card *card = rtd->card->snd_card;
+ struct snd_kcontrol *kctrl;
+ struct snd_kcontrol_new knew = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = name,
+ .info = rsnd_kctrl_info,
+ .get = rsnd_kctrl_get,
+ .put = rsnd_kctrl_put,
+ .private_value = (unsigned long)cfg,
+ };
+ int ret;
+
+ kctrl = snd_ctl_new1(&knew, mod);
+ if (!kctrl)
+ return -ENOMEM;
+
+ ret = snd_ctl_add(card, kctrl);
+ if (ret < 0) {
+ snd_ctl_free_one(kctrl);
+ return ret;
+ }
+
+ cfg->update = update;
+ cfg->card = card;
+ cfg->kctrl = kctrl;
+
+ return 0;
+}
+
+void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
+{
+ snd_ctl_remove(cfg->card, cfg->kctrl);
+}
+
+int rsnd_kctrl_new_m(struct rsnd_mod *mod,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ void (*update)(struct rsnd_mod *mod),
+ struct rsnd_kctrl_cfg_m *_cfg,
+ u32 max)
+{
+ _cfg->cfg.max = max;
+ _cfg->cfg.size = RSND_DVC_CHANNELS;
+ _cfg->cfg.val = _cfg->val;
+ return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
+}
+
+int rsnd_kctrl_new_s(struct rsnd_mod *mod,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ void (*update)(struct rsnd_mod *mod),
+ struct rsnd_kctrl_cfg_s *_cfg,
+ u32 max)
+{
+ _cfg->cfg.max = max;
+ _cfg->cfg.size = 1;
+ _cfg->cfg.val = &_cfg->val;
+ return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
+}
+
+int rsnd_kctrl_new_e(struct rsnd_mod *mod,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ struct rsnd_kctrl_cfg_s *_cfg,
+ void (*update)(struct rsnd_mod *mod),
+ const char * const *texts,
+ u32 max)
+{
+ _cfg->cfg.max = max;
+ _cfg->cfg.size = 1;
+ _cfg->cfg.val = &_cfg->val;
+ _cfg->cfg.texts = texts;
+ return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
+}
+
+/*
+ * 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 snd_soc_dai *dai = rtd->cpu_dai;
+ struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
+ int ret;
+
+ ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
+ if (ret)
+ return ret;
+
+ ret = rsnd_dai_call(pcm_new, &rdai->capture, 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 struct snd_soc_platform_driver rsnd_soc_platform = {
+ .ops = &rsnd_pcm_ops,
+ .pcm_new = rsnd_pcm_new,
+};
+
+static const struct snd_soc_component_driver rsnd_soc_component = {
+ .name = "rsnd",
+};
+
+static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
+ struct rsnd_dai_stream *io)
+{
+ int ret;
+
+ ret = rsnd_dai_call(probe, io, priv);
+ if (ret == -EAGAIN) {
+ /*
+ * Fallback to PIO mode
+ */
+
+ /*
+ * call "remove" for SSI/SRC/DVC
+ * SSI will be switch to PIO mode if it was DMA mode
+ * see
+ * rsnd_dma_init()
+ * rsnd_ssi_fallback()
+ */
+ rsnd_dai_call(remove, io, priv);
+
+ /*
+ * remove SRC/DVC from DAI,
+ */
+ rsnd_path_break(priv, io, src);
+ rsnd_path_break(priv, io, dvc);
+
+ /*
+ * fallback
+ */
+ rsnd_dai_call(fallback, io, priv);
+
+ /*
+ * retry to "probe".
+ * DAI has SSI which is PIO mode only now.
+ */
+ ret = rsnd_dai_call(probe, io, priv);
+ }
+
+ return ret;
+}
+
+/*
+ * 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_dma_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_rdai_continuance_probe(priv, &rdai->playback);
+ if (ret)
+ goto exit_snd_probe;
+
+ ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
+ if (ret)
+ goto exit_snd_probe;
+ }
+
+ dev_set_drvdata(dev, priv);
+
+ /*
+ * 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;
+ }
+
+ pm_runtime_enable(dev);
+
+ dev_info(dev, "probed\n");
+ return ret;
+
+exit_snd_soc:
+ snd_soc_unregister_platform(dev);
+exit_snd_probe:
+ for_each_rsnd_dai(rdai, priv, i) {
+ rsnd_dai_call(remove, &rdai->playback, priv);
+ rsnd_dai_call(remove, &rdai->capture, priv);
+ }
+
+ return ret;
+}
+
+static int rsnd_remove(struct platform_device *pdev)
+{
+ struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
+ struct rsnd_dai *rdai;
+ void (*remove_func[])(struct platform_device *pdev,
+ struct rsnd_priv *priv) = {
+ rsnd_ssi_remove,
+ rsnd_src_remove,
+ rsnd_dvc_remove,
+ };
+ int ret = 0, i;
+
+ pm_runtime_disable(&pdev->dev);
+
+ for_each_rsnd_dai(rdai, priv, i) {
+ ret |= rsnd_dai_call(remove, &rdai->playback, priv);
+ ret |= rsnd_dai_call(remove, &rdai->capture, priv);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(remove_func); i++)
+ remove_func[i](pdev, priv);
+
+ snd_soc_unregister_component(&pdev->dev);
+ snd_soc_unregister_platform(&pdev->dev);
+
+ return ret;
+}
+
+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");
Code Review / kvmfornfv.git / blobdiff