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/*
* sound/soc/sprd/i2s-null-codec.c
*
* Copyright (C) 2013 SpreadTrum Ltd.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "sprd-asoc-debug.h"
#define pr_fmt(fmt) pr_sprd_fmt("I2SNC") fmt
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <sound/soc.h>
#include "sprd-asoc-common.h"
#include <soc/sprd/i2s.h>
#define NAME_SIZE 32
static struct snd_soc_dai_link all_i2s_dai[] = {
{
.name = "all-i2s",
.stream_name = "i2s",
.codec_name = "null-codec",
.platform_name = "sprd-pcm-audio",
.cpu_dai_name = "i2s_bt_sco0",
.codec_dai_name = "null-codec-dai",
.ignore_suspend = 1,
},
};
#ifdef CONFIG_PROC_FS
static int i2s_debug_init(struct snd_soc_card *card)
{
struct snd_info_entry *entry;
if ((entry = snd_info_create_card_entry(card->snd_card, "i2s-debug",
card->snd_card->proc_root)) != NULL) {
entry->c.text.read = i2s_debug_read;
entry->c.text.write = i2s_debug_write;
entry->mode |= S_IWUSR;
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
}
}
return 0;
}
static void i2s_register_proc_init(struct snd_soc_card *card)
{
struct snd_info_entry *entry;
if (!snd_card_proc_new(card->snd_card, "i2s-reg", &entry))
snd_info_set_text_ops(entry, NULL, i2s_register_proc_read);
}
#else /* !CONFIG_PROC_FS */
static void i2s_register_proc_init(struct snd_soc_card *card)
{
}
static int i2s_debug_init(struct snd_soc_card *card)
{
}
#endif
static int board_late_probe(struct snd_soc_card *card)
{
i2s_debug_init(card);
i2s_register_proc_init(card);
return 0;
}
#define I2S_CONFIG(xname, xreg) \
SOC_SINGLE_EXT(xname, FUN_REG(xreg), 0, LONG_MAX, 0, i2s_config_get, i2s_config_set)
static const struct snd_kcontrol_new i2s_config_snd_controls[] = {
I2S_CONFIG("fs", FS),
I2S_CONFIG("hw_port", HW_PROT),
I2S_CONFIG("slave_timeout", SLAVE_TIMEOUT),
I2S_CONFIG("bus_type", BUS_TYPE),
I2S_CONFIG("byte_per_chan", BYTE_PER_CHAN),
I2S_CONFIG("mode", MODE),
I2S_CONFIG("lsb", LSB),
I2S_CONFIG("rtx_mode", TRX_MODE),
I2S_CONFIG("lrck_inv", LRCK_INV),
I2S_CONFIG("sync_mode", SYNC_MODE),
I2S_CONFIG("clk_inv", CLK_INV),
I2S_CONFIG("i2s_bus_mode", I2S_BUS_MODE),
I2S_CONFIG("pcm_bus_mode", PCM_BUS_MODE),
I2S_CONFIG("pcm_slot", PCM_SLOT),
I2S_CONFIG("pcm_cycle", PCM_CYCLE),
I2S_CONFIG("tx_watermark", TX_WATERMARK),
I2S_CONFIG("rx_watermark", RX_WATERMARK),
};
static struct snd_soc_card all_i2s_card = {
.name = "all-i2s",
.dai_link = all_i2s_dai,
.num_links = ARRAY_SIZE(all_i2s_dai),
.owner = THIS_MODULE,
.late_probe = board_late_probe,
.controls = i2s_config_snd_controls,
.num_controls = ARRAY_SIZE(i2s_config_snd_controls),
};
static int sprd_asoc_i2s_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &all_i2s_card;
struct device_node *node = pdev->dev.of_node;
card->dev = &pdev->dev;
if (node) {
int i;
int dai_count;
struct device_node *pcm_node;
struct device_node *codec_node;
if (snd_soc_of_parse_card_name(card, "sprd,model")) {
pr_err("ERR:Card name is not provided\n");
return -ENODEV;
}
pcm_node = of_parse_phandle(node, "sprd,pcm", 0);
if (!pcm_node) {
pr_err("ERR:PCM node is not provided\n");
return -EINVAL;
}
codec_node = of_parse_phandle(node, "sprd,codec", 0);
if (!codec_node) {
pr_err("ERR:CODEC node is not provided\n");
of_node_put(pcm_node);
return -EINVAL;
}
if (!of_get_property(node, "sprd,i2s", &dai_count))
return -ENOENT;
dai_count /= sizeof(((struct property *) 0)->length);
sp_asoc_pr_dbg("Register I2S from DTS count is %d\n",
dai_count);
card->dai_link =
devm_kzalloc(&pdev->dev,
dai_count * sizeof(struct snd_soc_dai_link),
GFP_KERNEL);
card->num_links = dai_count;
for (i = 0; i < card->num_links; i++) {
char uni_name[NAME_SIZE] = { 0 };
char uni_sname[NAME_SIZE] = { 0 };
struct device_node *dai_node;
dai_node = of_parse_phandle(node, "sprd,i2s", i);
if (dai_node)
sp_asoc_pr_dbg("Register I2S dai node is %s\n",
dai_node->full_name);
else
pr_err("ERR:I2S dai node is not provided\n");
card->dai_link[i] = all_i2s_dai[0];
snprintf(uni_name, NAME_SIZE, "%s.%d",
all_i2s_dai[0].name, i);
snprintf(uni_sname, NAME_SIZE, "%s.%d",
all_i2s_dai[0].stream_name, i);
card->dai_link[i].name = kstrdup(uni_name, GFP_KERNEL);
card->dai_link[i].stream_name =
kstrdup(uni_sname, GFP_KERNEL);
card->dai_link[i].cpu_dai_name = NULL;
card->dai_link[i].cpu_of_node = dai_node;
card->dai_link[i].platform_name = NULL;
card->dai_link[i].platform_of_node = pcm_node;
card->dai_link[i].codec_name = NULL;
card->dai_link[i].codec_of_node = codec_node;
of_node_put(dai_node);
}
of_node_put(pcm_node);
of_node_put(codec_node);
}
return snd_soc_register_card(card);
}
static int sprd_asoc_i2s_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
int i = 0;
if (all_i2s_dai != card->dai_link) {
for (i = 0; i < card->num_links; i++) {
kfree(card->dai_link[i].name);
kfree(card->dai_link[i].stream_name);
}
}
snd_soc_unregister_card(card);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id i2s_null_codec_of_match[] = {
{.compatible = "sprd,i2s-null-codec",},
{},
};
MODULE_DEVICE_TABLE(of, i2s_null_codec_of_match);
#endif
static struct platform_driver sprd_asoc_i2s_driver = {
.driver = {
.name = "i2s-null-codec",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = of_match_ptr(i2s_null_codec_of_match),
},
.probe = sprd_asoc_i2s_probe,
.remove = sprd_asoc_i2s_remove,
};
static int __init sprd_asoc_i2s_init(void)
{
return platform_driver_register(&sprd_asoc_i2s_driver);
}
late_initcall_sync(sprd_asoc_i2s_init);
MODULE_DESCRIPTION("ALSA SoC SpreadTrum I2S");
MODULE_AUTHOR("Ken Kuang <ken.kuang@spreadtrum.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("machine:i2s");
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