2012-04-09 12:17:50 +08:00
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/*
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* ASoC simple sound card support
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*
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* Copyright (C) 2012 Renesas Solutions Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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2013-11-20 14:25:02 +08:00
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#include <linux/clk.h>
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2014-02-14 09:34:36 +08:00
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#include <linux/device.h>
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2012-04-09 12:17:50 +08:00
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#include <linux/module.h>
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2013-11-20 14:25:02 +08:00
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#include <linux/of.h>
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2012-04-09 12:17:50 +08:00
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#include <linux/platform_device.h>
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2014-01-14 12:35:32 +08:00
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#include <linux/string.h>
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2012-04-09 12:17:50 +08:00
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#include <sound/simple_card.h>
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2014-02-14 09:34:36 +08:00
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#include <sound/soc-dai.h>
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#include <sound/soc.h>
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2012-04-09 12:17:50 +08:00
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2014-01-15 23:51:56 +08:00
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struct simple_card_data {
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struct snd_soc_card snd_card;
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struct asoc_simple_dai cpu_dai;
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struct asoc_simple_dai codec_dai;
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struct snd_soc_dai_link snd_link;
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};
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2013-01-11 08:49:11 +08:00
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static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
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2014-01-24 15:43:01 +08:00
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struct asoc_simple_dai *set)
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2013-01-11 08:49:11 +08:00
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{
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2014-01-24 15:43:00 +08:00
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int ret;
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2013-01-11 08:49:11 +08:00
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2014-01-24 15:43:01 +08:00
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if (set->fmt) {
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ret = snd_soc_dai_set_fmt(dai, set->fmt);
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2014-01-24 15:43:00 +08:00
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if (ret && ret != -ENOTSUPP) {
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dev_err(dai->dev, "simple-card: set_fmt error\n");
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goto err;
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}
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2013-10-18 13:46:49 +08:00
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}
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2014-01-24 15:43:00 +08:00
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if (set->sysclk) {
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2013-01-11 08:49:11 +08:00
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ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
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2014-01-24 15:43:00 +08:00
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if (ret && ret != -ENOTSUPP) {
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dev_err(dai->dev, "simple-card: set_sysclk error\n");
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goto err;
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}
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}
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2014-02-14 09:34:36 +08:00
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if (set->slots) {
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ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
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set->slots,
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set->slot_width);
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if (ret && ret != -ENOTSUPP) {
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dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
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goto err;
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}
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}
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2014-01-24 15:43:00 +08:00
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ret = 0;
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2013-01-11 08:49:11 +08:00
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2014-01-24 15:43:00 +08:00
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err:
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2013-01-11 08:49:11 +08:00
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return ret;
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}
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2012-04-09 12:17:50 +08:00
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static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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2014-01-15 23:52:00 +08:00
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struct simple_card_data *priv =
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2014-01-13 17:08:08 +08:00
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snd_soc_card_get_drvdata(rtd->card);
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2012-04-09 12:17:50 +08:00
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struct snd_soc_dai *codec = rtd->codec_dai;
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struct snd_soc_dai *cpu = rtd->cpu_dai;
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int ret;
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2014-01-24 15:43:01 +08:00
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ret = __asoc_simple_card_dai_init(codec, &priv->codec_dai);
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2013-01-11 08:49:11 +08:00
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if (ret < 0)
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return ret;
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2012-04-09 12:17:50 +08:00
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2014-01-24 15:43:01 +08:00
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ret = __asoc_simple_card_dai_init(cpu, &priv->cpu_dai);
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2013-01-11 08:49:11 +08:00
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if (ret < 0)
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return ret;
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2012-04-09 12:17:50 +08:00
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return 0;
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}
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2013-11-20 14:25:02 +08:00
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static int
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asoc_simple_card_sub_parse_of(struct device_node *np,
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2014-01-24 15:43:01 +08:00
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unsigned int daifmt,
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2013-11-20 14:25:02 +08:00
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struct asoc_simple_dai *dai,
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2014-01-15 23:51:48 +08:00
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const struct device_node **p_node,
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const char **name)
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2013-11-20 14:25:02 +08:00
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{
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2014-01-15 23:51:41 +08:00
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struct device_node *node;
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2013-11-20 14:25:02 +08:00
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struct clk *clk;
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int ret;
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/*
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* get node via "sound-dai = <&phandle port>"
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* it will be used as xxx_of_node on soc_bind_dai_link()
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*/
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2014-01-15 23:51:41 +08:00
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node = of_parse_phandle(np, "sound-dai", 0);
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if (!node)
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2013-11-20 14:25:02 +08:00
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return -ENODEV;
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2014-01-15 23:51:41 +08:00
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*p_node = node;
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2013-11-20 14:25:02 +08:00
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/* get dai->name */
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2014-01-15 23:51:48 +08:00
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ret = snd_soc_of_get_dai_name(np, name);
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2013-11-20 14:25:02 +08:00
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if (ret < 0)
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2014-03-11 17:03:40 +08:00
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return ret;
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2013-11-20 14:25:02 +08:00
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2014-02-14 09:34:36 +08:00
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/* parse TDM slot */
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ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
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if (ret)
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2014-03-11 17:03:40 +08:00
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return ret;
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2014-02-14 09:34:36 +08:00
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2013-11-20 14:25:02 +08:00
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/*
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* bitclock-inversion, frame-inversion
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* bitclock-master, frame-master
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* and specific "format" if it has
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*/
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dai->fmt = snd_soc_of_parse_daifmt(np, NULL);
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2014-01-24 15:43:01 +08:00
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dai->fmt |= daifmt;
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2013-11-20 14:25:02 +08:00
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/*
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* dai->sysclk come from
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* "clocks = <&xxx>" (if system has common clock)
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* or "system-clock-frequency = <xxx>"
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2013-12-23 15:25:38 +08:00
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* or device's module clock.
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2013-11-20 14:25:02 +08:00
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*/
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2013-12-23 15:25:38 +08:00
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if (of_property_read_bool(np, "clocks")) {
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clk = of_clk_get(np, 0);
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if (IS_ERR(clk)) {
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ret = PTR_ERR(clk);
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2014-03-11 17:03:40 +08:00
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return ret;
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2013-12-23 15:25:38 +08:00
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}
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dai->sysclk = clk_get_rate(clk);
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} else if (of_property_read_bool(np, "system-clock-frequency")) {
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2013-11-20 14:25:02 +08:00
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of_property_read_u32(np,
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"system-clock-frequency",
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&dai->sysclk);
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2013-12-23 15:25:38 +08:00
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} else {
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2014-01-15 23:51:41 +08:00
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clk = of_clk_get(node, 0);
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2014-01-06 12:34:36 +08:00
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if (!IS_ERR(clk))
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dai->sysclk = clk_get_rate(clk);
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2013-12-23 15:25:38 +08:00
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}
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2013-11-20 14:25:02 +08:00
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2014-03-11 17:03:40 +08:00
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return 0;
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2013-11-20 14:25:02 +08:00
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}
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static int asoc_simple_card_parse_of(struct device_node *node,
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2014-01-15 23:52:00 +08:00
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struct simple_card_data *priv,
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2014-01-15 23:51:41 +08:00
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struct device *dev)
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2013-11-20 14:25:02 +08:00
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{
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2014-01-15 23:52:00 +08:00
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struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
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2014-03-12 11:02:11 +08:00
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struct asoc_simple_dai *codec_dai = &priv->codec_dai;
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struct asoc_simple_dai *cpu_dai = &priv->cpu_dai;
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2013-11-20 14:25:02 +08:00
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struct device_node *np;
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char *name;
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2014-03-15 18:32:42 +08:00
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unsigned int daifmt;
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2013-12-23 12:57:01 +08:00
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int ret;
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2013-11-20 14:25:02 +08:00
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2014-01-24 15:43:02 +08:00
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/* parsing the card name from DT */
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snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
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2013-11-20 14:25:02 +08:00
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/* get CPU/CODEC common format via simple-audio-card,format */
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2014-03-15 18:32:42 +08:00
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daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,") &
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2013-11-20 14:25:02 +08:00
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(SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK);
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2014-02-08 15:59:53 +08:00
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/* off-codec widgets */
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if (of_property_read_bool(node, "simple-audio-card,widgets")) {
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ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
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"simple-audio-card,widgets");
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if (ret)
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return ret;
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}
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2013-12-23 12:57:01 +08:00
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/* DAPM routes */
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2014-01-07 09:15:16 +08:00
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if (of_property_read_bool(node, "simple-audio-card,routing")) {
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2014-01-15 23:52:00 +08:00
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ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
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2014-01-07 09:15:16 +08:00
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"simple-audio-card,routing");
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2014-01-07 09:13:42 +08:00
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if (ret)
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return ret;
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}
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2013-12-23 12:57:01 +08:00
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2013-11-20 14:25:02 +08:00
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/* CPU sub-node */
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ret = -EINVAL;
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np = of_get_child_by_name(node, "simple-audio-card,cpu");
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2014-03-11 17:03:40 +08:00
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if (np) {
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2014-03-15 18:32:42 +08:00
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ret = asoc_simple_card_sub_parse_of(np, daifmt,
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2014-03-12 11:02:11 +08:00
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cpu_dai,
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2014-01-15 23:51:48 +08:00
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&dai_link->cpu_of_node,
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&dai_link->cpu_dai_name);
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2014-03-11 17:03:40 +08:00
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of_node_put(np);
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}
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2013-11-20 14:25:02 +08:00
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if (ret < 0)
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return ret;
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/* CODEC sub-node */
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ret = -EINVAL;
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np = of_get_child_by_name(node, "simple-audio-card,codec");
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2014-03-11 17:03:40 +08:00
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if (np) {
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2014-03-15 18:32:42 +08:00
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ret = asoc_simple_card_sub_parse_of(np, daifmt,
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2014-03-12 11:02:11 +08:00
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codec_dai,
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2014-01-15 23:51:48 +08:00
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&dai_link->codec_of_node,
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&dai_link->codec_dai_name);
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2014-03-11 17:03:40 +08:00
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of_node_put(np);
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}
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2013-11-20 14:25:02 +08:00
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if (ret < 0)
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return ret;
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2014-03-12 11:02:11 +08:00
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/*
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* overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC
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* while the other bits should be identical unless buggy SW/HW design.
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*/
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cpu_dai->fmt = codec_dai->fmt;
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2014-01-15 23:51:48 +08:00
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if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
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2013-12-20 14:39:50 +08:00
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return -EINVAL;
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2013-11-20 14:25:02 +08:00
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/* card name is created from CPU/CODEC dai name */
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name = devm_kzalloc(dev,
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2014-01-15 23:51:48 +08:00
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strlen(dai_link->cpu_dai_name) +
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strlen(dai_link->codec_dai_name) + 2,
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2013-11-20 14:25:02 +08:00
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GFP_KERNEL);
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2014-01-15 23:51:48 +08:00
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sprintf(name, "%s-%s", dai_link->cpu_dai_name,
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dai_link->codec_dai_name);
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2014-01-24 15:43:02 +08:00
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if (!priv->snd_card.name)
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priv->snd_card.name = name;
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2014-01-15 23:51:45 +08:00
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dai_link->name = dai_link->stream_name = name;
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2013-11-20 14:25:02 +08:00
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/* simple-card assumes platform == cpu */
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2014-01-15 23:51:45 +08:00
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dai_link->platform_of_node = dai_link->cpu_of_node;
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2013-11-20 14:25:02 +08:00
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2014-01-15 23:51:37 +08:00
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dev_dbg(dev, "card-name : %s\n", name);
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2014-03-15 18:32:42 +08:00
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dev_dbg(dev, "platform : %04x\n", daifmt);
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2013-11-20 14:25:02 +08:00
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dev_dbg(dev, "cpu : %s / %04x / %d\n",
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2014-01-15 23:51:48 +08:00
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dai_link->cpu_dai_name,
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2014-03-12 11:02:11 +08:00
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cpu_dai->fmt,
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cpu_dai->sysclk);
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2013-11-20 14:25:02 +08:00
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dev_dbg(dev, "codec : %s / %04x / %d\n",
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2014-01-15 23:51:48 +08:00
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dai_link->codec_dai_name,
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2014-03-12 11:02:11 +08:00
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codec_dai->fmt,
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codec_dai->sysclk);
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2013-11-20 14:25:02 +08:00
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2014-02-28 10:25:24 +08:00
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/*
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* soc_bind_dai_link() will check cpu name
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* after of_node matching if dai_link has cpu_dai_name.
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* but, it will never match if name was created by fmt_single_name()
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* remove cpu_dai_name to escape name matching.
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* see
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* fmt_single_name()
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* fmt_multiple_name()
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*/
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dai_link->cpu_dai_name = NULL;
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2013-11-20 14:25:02 +08:00
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return 0;
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}
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|
2014-03-11 17:03:40 +08:00
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/* update the reference count of the devices nodes at end of probe */
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static int asoc_simple_card_unref(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct snd_soc_dai_link *dai_link;
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struct device_node *np;
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int num_links;
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for (num_links = 0, dai_link = card->dai_link;
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num_links < card->num_links;
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num_links++, dai_link++) {
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np = (struct device_node *) dai_link->cpu_of_node;
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if (np)
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of_node_put(np);
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np = (struct device_node *) dai_link->codec_of_node;
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|
|
if (np)
|
|
|
|
of_node_put(np);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-09 12:17:50 +08:00
|
|
|
static int asoc_simple_card_probe(struct platform_device *pdev)
|
|
|
|
{
|
2014-01-15 23:51:56 +08:00
|
|
|
struct simple_card_data *priv;
|
2014-01-15 23:51:45 +08:00
|
|
|
struct snd_soc_dai_link *dai_link;
|
2013-11-20 14:25:02 +08:00
|
|
|
struct device_node *np = pdev->dev.of_node;
|
2012-12-26 14:52:33 +08:00
|
|
|
struct device *dev = &pdev->dev;
|
2014-01-14 12:35:32 +08:00
|
|
|
int ret;
|
2012-04-09 12:17:50 +08:00
|
|
|
|
2014-01-15 23:51:52 +08:00
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
|
|
if (!priv)
|
2014-01-14 12:35:32 +08:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2014-01-15 23:51:41 +08:00
|
|
|
/*
|
|
|
|
* init snd_soc_card
|
|
|
|
*/
|
2014-01-15 23:51:52 +08:00
|
|
|
priv->snd_card.owner = THIS_MODULE;
|
|
|
|
priv->snd_card.dev = dev;
|
|
|
|
dai_link = &priv->snd_link;
|
|
|
|
priv->snd_card.dai_link = dai_link;
|
|
|
|
priv->snd_card.num_links = 1;
|
2014-01-15 23:51:41 +08:00
|
|
|
|
2013-11-20 14:25:02 +08:00
|
|
|
if (np && of_device_is_available(np)) {
|
2014-01-14 12:35:32 +08:00
|
|
|
|
2014-01-15 23:51:52 +08:00
|
|
|
ret = asoc_simple_card_parse_of(np, priv, dev);
|
2014-01-14 12:35:32 +08:00
|
|
|
if (ret < 0) {
|
|
|
|
if (ret != -EPROBE_DEFER)
|
|
|
|
dev_err(dev, "parse error %d\n", ret);
|
2014-03-11 17:03:40 +08:00
|
|
|
goto err;
|
2013-11-20 14:25:02 +08:00
|
|
|
}
|
|
|
|
} else {
|
2014-01-15 23:51:52 +08:00
|
|
|
struct asoc_simple_card_info *cinfo;
|
|
|
|
|
|
|
|
cinfo = dev->platform_data;
|
|
|
|
if (!cinfo) {
|
2014-01-09 17:49:40 +08:00
|
|
|
dev_err(dev, "no info for asoc-simple-card\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2013-11-20 14:25:02 +08:00
|
|
|
|
2014-01-15 23:51:33 +08:00
|
|
|
if (!cinfo->name ||
|
|
|
|
!cinfo->codec_dai.name ||
|
|
|
|
!cinfo->codec ||
|
|
|
|
!cinfo->platform ||
|
|
|
|
!cinfo->cpu_dai.name) {
|
|
|
|
dev_err(dev, "insufficient asoc_simple_card_info settings\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2014-01-15 23:51:37 +08:00
|
|
|
|
2014-03-10 10:37:56 +08:00
|
|
|
priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
|
2014-01-15 23:51:45 +08:00
|
|
|
dai_link->name = cinfo->name;
|
|
|
|
dai_link->stream_name = cinfo->name;
|
|
|
|
dai_link->platform_name = cinfo->platform;
|
|
|
|
dai_link->codec_name = cinfo->codec;
|
2014-01-15 23:51:48 +08:00
|
|
|
dai_link->cpu_dai_name = cinfo->cpu_dai.name;
|
|
|
|
dai_link->codec_dai_name = cinfo->codec_dai.name;
|
2014-01-15 23:51:52 +08:00
|
|
|
memcpy(&priv->cpu_dai, &cinfo->cpu_dai,
|
|
|
|
sizeof(priv->cpu_dai));
|
|
|
|
memcpy(&priv->codec_dai, &cinfo->codec_dai,
|
|
|
|
sizeof(priv->codec_dai));
|
2014-03-03 12:32:43 +08:00
|
|
|
|
|
|
|
priv->cpu_dai.fmt |= cinfo->daifmt;
|
|
|
|
priv->codec_dai.fmt |= cinfo->daifmt;
|
2012-04-09 12:17:50 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* init snd_soc_dai_link
|
|
|
|
*/
|
2014-01-15 23:51:45 +08:00
|
|
|
dai_link->init = asoc_simple_card_dai_init;
|
2012-04-09 12:17:50 +08:00
|
|
|
|
2014-01-15 23:51:52 +08:00
|
|
|
snd_soc_card_set_drvdata(&priv->snd_card, priv);
|
2012-04-09 12:17:50 +08:00
|
|
|
|
2014-03-11 17:03:40 +08:00
|
|
|
ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
|
|
|
|
|
|
|
|
err:
|
|
|
|
asoc_simple_card_unref(pdev);
|
|
|
|
return ret;
|
2012-04-09 12:17:50 +08:00
|
|
|
}
|
|
|
|
|
2013-11-20 14:25:02 +08:00
|
|
|
static const struct of_device_id asoc_simple_of_match[] = {
|
|
|
|
{ .compatible = "simple-audio-card", },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
|
|
|
|
|
2012-04-09 12:17:50 +08:00
|
|
|
static struct platform_driver asoc_simple_card = {
|
|
|
|
.driver = {
|
|
|
|
.name = "asoc-simple-card",
|
2013-08-24 01:35:17 +08:00
|
|
|
.owner = THIS_MODULE,
|
2013-11-20 14:25:02 +08:00
|
|
|
.of_match_table = asoc_simple_of_match,
|
2012-04-09 12:17:50 +08:00
|
|
|
},
|
|
|
|
.probe = asoc_simple_card_probe,
|
|
|
|
};
|
|
|
|
|
|
|
|
module_platform_driver(asoc_simple_card);
|
|
|
|
|
2013-08-24 01:35:17 +08:00
|
|
|
MODULE_ALIAS("platform:asoc-simple-card");
|
2012-04-09 12:17:50 +08:00
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_DESCRIPTION("ASoC Simple Sound Card");
|
|
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|