/*
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* Rockchip machine ASoC driver for Rockchip Multi-codecs audio
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*
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* Copyright (C) 2018 Fuzhou Rockchip Electronics Co., Ltd
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*
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* Authors: Sugar Zhang <sugar.zhang@rock-chips.com>,
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "../codecs/rk3308_codec_provider.h"
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#define DRV_NAME "rk-multicodecs"
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#define MAX_CODECS 2
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#define WAIT_CARDS (SNDRV_CARDS - 1)
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#define DEFAULT_MCLK_FS 256
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struct multicodecs_data {
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struct snd_soc_card snd_card;
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struct snd_soc_dai_link dai_link;
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unsigned int mclk_fs;
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bool codec_hp_det;
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};
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static struct snd_soc_jack mc_hp_jack;
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static int rk_multicodecs_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct multicodecs_data *mc_data = snd_soc_card_get_drvdata(rtd->card);
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unsigned int mclk;
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int ret;
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mclk = params_rate(params) * mc_data->mclk_fs;
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ret = snd_soc_dai_set_sysclk(codec_dai, substream->stream, mclk,
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SND_SOC_CLOCK_IN);
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if (ret && ret != -ENOTSUPP) {
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pr_err("Set codec_dai sysclk failed: %d\n", ret);
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goto out;
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}
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ret = snd_soc_dai_set_sysclk(cpu_dai, substream->stream, mclk,
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SND_SOC_CLOCK_OUT);
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if (ret && ret != -ENOTSUPP) {
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pr_err("Set cpu_dai sysclk failed: %d\n", ret);
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goto out;
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}
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return 0;
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out:
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return ret;
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}
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static int rk_dailink_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct multicodecs_data *mc_data = snd_soc_card_get_drvdata(rtd->card);
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if (mc_data->codec_hp_det) {
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snd_soc_card_jack_new(rtd->card, "Headphones",
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SND_JACK_HEADPHONE,
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&mc_hp_jack, NULL, 0);
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#ifdef CONFIG_SND_SOC_RK3308
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if (rk3308_codec_set_jack_detect_cb)
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rk3308_codec_set_jack_detect_cb(rtd->codec_dai->component, &mc_hp_jack);
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#endif
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}
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return 0;
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}
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static int rk_multicodecs_parse_daifmt(struct device_node *node,
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struct device_node *codec,
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struct multicodecs_data *mc_data,
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const char *prefix)
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{
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struct snd_soc_dai_link *dai_link = &mc_data->dai_link;
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struct device_node *bitclkmaster = NULL;
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struct device_node *framemaster = NULL;
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unsigned int daifmt;
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daifmt = snd_soc_of_parse_daifmt(node, prefix,
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&bitclkmaster, &framemaster);
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daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
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if (strlen(prefix) && !bitclkmaster && !framemaster) {
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/*
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* No dai-link level and master setting was not found from
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* sound node level, revert back to legacy DT parsing and
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* take the settings from codec node.
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*/
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pr_debug("%s: Revert to legacy daifmt parsing\n", __func__);
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daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
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(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
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} else {
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if (codec == bitclkmaster)
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daifmt |= (codec == framemaster) ?
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SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
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else
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daifmt |= (codec == framemaster) ?
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SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
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}
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/*
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* If there is NULL format means that the format isn't specified, we
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* need to set i2s format by default.
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*/
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if (!(daifmt & SND_SOC_DAIFMT_FORMAT_MASK))
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daifmt |= SND_SOC_DAIFMT_I2S;
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dai_link->dai_fmt = daifmt;
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of_node_put(bitclkmaster);
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of_node_put(framemaster);
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return 0;
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}
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static int wait_locked_card(struct device_node *np, struct device *dev)
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{
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char *propname = "rockchip,wait-card-locked";
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u32 cards[WAIT_CARDS];
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int num;
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int ret;
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#ifndef MODULE
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int i;
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#endif
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ret = of_property_count_u32_elems(np, propname);
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if (ret < 0) {
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if (ret == -EINVAL) {
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/*
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* -EINVAL means the property does not exist, this is
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* fine.
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*/
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return 0;
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}
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dev_err(dev, "Property '%s' elems could not be read: %d\n",
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propname, ret);
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return ret;
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}
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num = ret;
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if (num > WAIT_CARDS)
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num = WAIT_CARDS;
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ret = of_property_read_u32_array(np, propname, cards, num);
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if (ret < 0) {
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if (ret == -EINVAL) {
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/*
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* -EINVAL means the property does not exist, this is
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* fine.
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*/
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return 0;
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}
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dev_err(dev, "Property '%s' could not be read: %d\n",
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propname, ret);
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return ret;
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}
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ret = 0;
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#ifndef MODULE
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for (i = 0; i < num; i++) {
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if (!snd_card_locked(cards[i])) {
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dev_warn(dev, "card: %d has not been locked, re-probe again\n",
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cards[i]);
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ret = -EPROBE_DEFER;
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break;
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}
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}
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#endif
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return ret;
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}
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static struct snd_soc_ops rk_ops = {
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.hw_params = rk_multicodecs_hw_params,
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};
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static int rk_multicodecs_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card;
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_dai_link *link;
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struct snd_soc_dai_link_component *codecs;
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struct multicodecs_data *mc_data;
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struct of_phandle_args args;
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struct device_node *node;
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u32 val;
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int count;
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int ret = 0, i = 0, idx = 0;
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const char *prefix = "rockchip,";
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ret = wait_locked_card(np, &pdev->dev);
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if (ret < 0) {
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dev_err(&pdev->dev, "check_lock_card failed: %d\n", ret);
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return ret;
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}
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mc_data = devm_kzalloc(&pdev->dev, sizeof(*mc_data), GFP_KERNEL);
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if (!mc_data)
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return -ENOMEM;
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card = &mc_data->snd_card;
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card->dev = &pdev->dev;
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/* Parse the card name from DT */
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ret = snd_soc_of_parse_card_name(card, "rockchip,card-name");
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if (ret < 0)
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return ret;
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link = &mc_data->dai_link;
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link->name = "dailink-multicodecs";
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link->stream_name = link->name;
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link->init = rk_dailink_init;
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link->ops = &rk_ops;
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card->dai_link = link;
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card->num_links = 1;
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card->num_aux_devs = 0;
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count = of_count_phandle_with_args(np, "rockchip,codec", NULL);
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if (count < 0 || count > MAX_CODECS)
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return -EINVAL;
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/* refine codecs, remove unavailable node */
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for (i = 0; i < count; i++) {
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node = of_parse_phandle(np, "rockchip,codec", i);
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if (!node)
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return -ENODEV;
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if (of_device_is_available(node))
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idx++;
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}
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if (!idx)
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return -ENODEV;
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codecs = devm_kcalloc(&pdev->dev, idx,
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sizeof(*codecs), GFP_KERNEL);
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link->codecs = codecs;
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link->num_codecs = idx;
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idx = 0;
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for (i = 0; i < count; i++) {
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node = of_parse_phandle(np, "rockchip,codec", i);
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if (!node)
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return -ENODEV;
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if (!of_device_is_available(node))
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continue;
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ret = of_parse_phandle_with_fixed_args(np, "rockchip,codec",
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0, i, &args);
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if (ret)
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return ret;
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codecs[idx].of_node = node;
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ret = snd_soc_get_dai_name(&args, &codecs[idx].dai_name);
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if (ret)
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return ret;
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idx++;
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}
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/* Only reference the codecs[0].of_node which maybe as master. */
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rk_multicodecs_parse_daifmt(np, codecs[0].of_node, mc_data, prefix);
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link->cpu_of_node = of_parse_phandle(np, "rockchip,cpu", 0);
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if (!link->cpu_of_node)
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return -ENODEV;
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link->platform_of_node = link->cpu_of_node;
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mc_data->mclk_fs = DEFAULT_MCLK_FS;
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if (!of_property_read_u32(np, "rockchip,mclk-fs", &val))
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mc_data->mclk_fs = val;
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mc_data->codec_hp_det =
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of_property_read_bool(np, "rockchip,codec-hp-det");
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snd_soc_card_set_drvdata(card, mc_data);
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ret = devm_snd_soc_register_card(&pdev->dev, card);
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if (ret == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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if (ret) {
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dev_err(&pdev->dev, "card register failed %d\n", ret);
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return ret;
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}
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platform_set_drvdata(pdev, card);
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return ret;
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}
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static const struct of_device_id rockchip_multicodecs_of_match[] = {
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{ .compatible = "rockchip,multicodecs-card", },
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{},
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};
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MODULE_DEVICE_TABLE(of, rockchip_multicodecs_of_match);
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static struct platform_driver rockchip_multicodecs_driver = {
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.probe = rk_multicodecs_probe,
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.driver = {
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.name = DRV_NAME,
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.pm = &snd_soc_pm_ops,
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.of_match_table = rockchip_multicodecs_of_match,
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},
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};
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module_platform_driver(rockchip_multicodecs_driver);
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MODULE_AUTHOR("Sugar Zhang <sugar.zhang@rock-chips.com>");
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MODULE_DESCRIPTION("Rockchip General Multicodecs ASoC driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:" DRV_NAME);
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