mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 04:22:19 +07:00
53ae918f11
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
487 lines
12 KiB
C
487 lines
12 KiB
C
/*
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* Renesas Sampling Rate Convert Sound Card for DPCM
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*
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* Copyright (C) 2015 Renesas Solutions Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* based on ${LINUX}/sound/soc/generic/simple-card.c
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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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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/string.h>
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#include <sound/jack.h>
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#include <sound/soc.h>
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#include <sound/soc-dai.h>
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#include <sound/simple_card_utils.h>
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struct rsrc_card_of_data {
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const char *prefix;
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const struct snd_soc_dapm_route *routes;
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int num_routes;
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};
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static const struct snd_soc_dapm_route routes_ssi0_ak4642[] = {
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{"ak4642 Playback", NULL, "DAI0 Playback"},
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{"DAI0 Capture", NULL, "ak4642 Capture"},
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};
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static const struct rsrc_card_of_data routes_of_ssi0_ak4642 = {
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.prefix = "ak4642",
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.routes = routes_ssi0_ak4642,
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.num_routes = ARRAY_SIZE(routes_ssi0_ak4642),
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};
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static const struct of_device_id rsrc_card_of_match[] = {
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{ .compatible = "renesas,rsrc-card,lager", .data = &routes_of_ssi0_ak4642 },
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{ .compatible = "renesas,rsrc-card,koelsch", .data = &routes_of_ssi0_ak4642 },
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{ .compatible = "renesas,rsrc-card", },
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{},
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};
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MODULE_DEVICE_TABLE(of, rsrc_card_of_match);
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#define IDX_CPU 0
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#define IDX_CODEC 1
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struct rsrc_card_priv {
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struct snd_soc_card snd_card;
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struct snd_soc_codec_conf codec_conf;
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struct asoc_simple_dai *dai_props;
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struct snd_soc_dai_link *dai_link;
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u32 convert_rate;
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u32 convert_channels;
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};
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#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
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#define rsrc_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
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#define rsrc_priv_to_props(priv, i) ((priv)->dai_props + (i))
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static int rsrc_card_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
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struct asoc_simple_dai *dai_props =
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rsrc_priv_to_props(priv, rtd->num);
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return clk_prepare_enable(dai_props->clk);
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}
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static void rsrc_card_shutdown(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
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struct asoc_simple_dai *dai_props =
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rsrc_priv_to_props(priv, rtd->num);
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clk_disable_unprepare(dai_props->clk);
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}
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static struct snd_soc_ops rsrc_card_ops = {
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.startup = rsrc_card_startup,
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.shutdown = rsrc_card_shutdown,
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};
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static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
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struct snd_soc_dai *dai;
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struct snd_soc_dai_link *dai_link;
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struct asoc_simple_dai *dai_props;
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int num = rtd->num;
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int ret;
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dai_link = rsrc_priv_to_link(priv, num);
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dai_props = rsrc_priv_to_props(priv, num);
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dai = dai_link->dynamic ?
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rtd->cpu_dai :
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rtd->codec_dai;
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if (dai_props->sysclk) {
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ret = snd_soc_dai_set_sysclk(dai, 0, dai_props->sysclk, 0);
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if (ret && ret != -ENOTSUPP) {
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dev_err(dai->dev, "set_sysclk error\n");
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goto err;
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}
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}
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if (dai_props->slots) {
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ret = snd_soc_dai_set_tdm_slot(dai,
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dai_props->tx_slot_mask,
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dai_props->rx_slot_mask,
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dai_props->slots,
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dai_props->slot_width);
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if (ret && ret != -ENOTSUPP) {
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dev_err(dai->dev, "set_tdm_slot error\n");
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goto err;
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}
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}
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ret = 0;
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err:
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return ret;
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}
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static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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if (priv->convert_rate)
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rate->min =
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rate->max = priv->convert_rate;
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if (priv->convert_channels)
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channels->min =
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channels->max = priv->convert_channels;
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return 0;
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}
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static int rsrc_card_parse_links(struct device_node *np,
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struct rsrc_card_priv *priv,
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int idx, bool is_fe)
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{
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struct device *dev = rsrc_priv_to_dev(priv);
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struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
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struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
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struct of_phandle_args args;
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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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ret = of_parse_phandle_with_args(np, "sound-dai",
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"#sound-dai-cells", 0, &args);
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if (ret)
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return ret;
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/* Parse TDM slot */
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ret = snd_soc_of_parse_tdm_slot(np,
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&dai_props->tx_slot_mask,
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&dai_props->rx_slot_mask,
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&dai_props->slots,
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&dai_props->slot_width);
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if (ret)
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return ret;
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if (is_fe) {
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/* BE is dummy */
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dai_link->codec_of_node = NULL;
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dai_link->codec_dai_name = "snd-soc-dummy-dai";
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dai_link->codec_name = "snd-soc-dummy";
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/* FE settings */
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dai_link->dynamic = 1;
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dai_link->dpcm_merged_format = 1;
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dai_link->cpu_of_node = args.np;
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ret = snd_soc_of_get_dai_name(np, &dai_link->cpu_dai_name);
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if (ret < 0)
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return ret;
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ret = asoc_simple_card_set_dailink_name(dev, dai_link,
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"fe.%s",
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dai_link->cpu_dai_name);
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if (ret < 0)
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return ret;
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/*
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* In soc_bind_dai_link() will check cpu name after
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* of_node matching if dai_link has cpu_dai_name.
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* but, it will never match if name was created by
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* fmt_single_name() remove cpu_dai_name if cpu_args
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* was 0. See:
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* fmt_single_name()
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* fmt_multiple_name()
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*/
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if (!args.args_count)
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dai_link->cpu_dai_name = NULL;
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} else {
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const struct rsrc_card_of_data *of_data;
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of_data = of_device_get_match_data(dev);
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/* FE is dummy */
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dai_link->cpu_of_node = NULL;
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dai_link->cpu_dai_name = "snd-soc-dummy-dai";
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dai_link->cpu_name = "snd-soc-dummy";
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/* BE settings */
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dai_link->no_pcm = 1;
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dai_link->be_hw_params_fixup = rsrc_card_be_hw_params_fixup;
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dai_link->codec_of_node = args.np;
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ret = snd_soc_of_get_dai_name(np, &dai_link->codec_dai_name);
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if (ret < 0)
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return ret;
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ret = asoc_simple_card_set_dailink_name(dev, dai_link,
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"be.%s",
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dai_link->codec_dai_name);
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if (ret < 0)
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return ret;
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/* additional name prefix */
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if (of_data) {
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priv->codec_conf.of_node = dai_link->codec_of_node;
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priv->codec_conf.name_prefix = of_data->prefix;
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} else {
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snd_soc_of_parse_audio_prefix(&priv->snd_card,
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&priv->codec_conf,
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dai_link->codec_of_node,
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"audio-prefix");
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}
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}
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/* Simple Card assumes platform == cpu */
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dai_link->platform_of_node = dai_link->cpu_of_node;
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dai_link->dpcm_playback = 1;
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dai_link->dpcm_capture = 1;
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dai_link->ops = &rsrc_card_ops;
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dai_link->init = rsrc_card_dai_init;
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return 0;
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}
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static int rsrc_card_parse_clk(struct device_node *np,
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struct rsrc_card_priv *priv,
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int idx, bool is_fe)
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{
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struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
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struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
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struct clk *clk;
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struct device_node *of_np = is_fe ? dai_link->cpu_of_node :
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dai_link->codec_of_node;
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u32 val;
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/*
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* Parse dai->sysclk come from "clocks = <&xxx>"
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* (if system has common clock)
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* or "system-clock-frequency = <xxx>"
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* or device's module clock.
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*/
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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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return PTR_ERR(clk);
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dai_props->sysclk = clk_get_rate(clk);
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dai_props->clk = clk;
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} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
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dai_props->sysclk = val;
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} else {
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clk = of_clk_get(of_np, 0);
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if (!IS_ERR(clk))
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dai_props->sysclk = clk_get_rate(clk);
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}
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return 0;
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}
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static int rsrc_card_dai_sub_link_of(struct device_node *node,
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struct device_node *np,
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struct rsrc_card_priv *priv,
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int idx, bool is_fe)
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{
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struct device *dev = rsrc_priv_to_dev(priv);
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struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
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struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
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int ret;
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ret = rsrc_card_parse_links(np, priv, idx, is_fe);
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if (ret < 0)
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return ret;
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ret = rsrc_card_parse_clk(np, priv, idx, is_fe);
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if (ret < 0)
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return ret;
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dev_dbg(dev, "\t%s / %04x / %d\n",
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dai_link->name,
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dai_link->dai_fmt,
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dai_props->sysclk);
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return ret;
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}
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static int rsrc_card_dai_link_of(struct device_node *node,
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struct rsrc_card_priv *priv)
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{
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struct device *dev = rsrc_priv_to_dev(priv);
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struct snd_soc_dai_link *dai_link;
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struct device_node *np;
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unsigned int daifmt = 0;
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int ret, i;
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bool is_fe;
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/* find 1st codec */
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i = 0;
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for_each_child_of_node(node, np) {
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dai_link = rsrc_priv_to_link(priv, i);
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if (strcmp(np->name, "codec") == 0) {
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ret = asoc_simple_card_parse_daifmt(dev, node, np,
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NULL, &daifmt);
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if (ret < 0)
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return ret;
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break;
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}
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i++;
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}
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i = 0;
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for_each_child_of_node(node, np) {
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dai_link = rsrc_priv_to_link(priv, i);
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dai_link->dai_fmt = daifmt;
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is_fe = false;
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if (strcmp(np->name, "cpu") == 0)
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is_fe = true;
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ret = rsrc_card_dai_sub_link_of(node, np, priv, i, is_fe);
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if (ret < 0)
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return ret;
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i++;
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}
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return 0;
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}
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static int rsrc_card_parse_of(struct device_node *node,
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struct rsrc_card_priv *priv,
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struct device *dev)
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{
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const struct rsrc_card_of_data *of_data = of_device_get_match_data(dev);
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struct asoc_simple_dai *props;
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struct snd_soc_dai_link *links;
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int ret;
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int num;
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if (!node)
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return -EINVAL;
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num = of_get_child_count(node);
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props = devm_kzalloc(dev, sizeof(*props) * num, GFP_KERNEL);
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links = devm_kzalloc(dev, sizeof(*links) * num, GFP_KERNEL);
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if (!props || !links)
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return -ENOMEM;
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priv->dai_props = props;
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priv->dai_link = links;
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/* Init snd_soc_card */
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priv->snd_card.owner = THIS_MODULE;
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priv->snd_card.dev = dev;
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priv->snd_card.dai_link = priv->dai_link;
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priv->snd_card.num_links = num;
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priv->snd_card.codec_conf = &priv->codec_conf;
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priv->snd_card.num_configs = 1;
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if (of_data) {
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priv->snd_card.of_dapm_routes = of_data->routes;
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priv->snd_card.num_of_dapm_routes = of_data->num_routes;
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} else {
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snd_soc_of_parse_audio_routing(&priv->snd_card,
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"audio-routing");
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}
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/* sampling rate convert */
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of_property_read_u32(node, "convert-rate", &priv->convert_rate);
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/* channels transfer */
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of_property_read_u32(node, "convert-channels", &priv->convert_channels);
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dev_dbg(dev, "New rsrc-audio-card: %s\n",
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priv->snd_card.name ? priv->snd_card.name : "");
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dev_dbg(dev, "SRC : convert_rate %d\n", priv->convert_rate);
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dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels);
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ret = rsrc_card_dai_link_of(node, priv);
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if (ret < 0)
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return ret;
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ret = asoc_simple_card_parse_card_name(&priv->snd_card, "card-");
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if (ret < 0)
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return ret;
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return 0;
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}
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/* Decrease the reference count of the device nodes */
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static int rsrc_card_unref(struct snd_soc_card *card)
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{
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struct snd_soc_dai_link *dai_link;
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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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of_node_put(dai_link->cpu_of_node);
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of_node_put(dai_link->codec_of_node);
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}
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return 0;
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}
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static int rsrc_card_probe(struct platform_device *pdev)
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{
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struct rsrc_card_priv *priv;
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struct device_node *np = pdev->dev.of_node;
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struct device *dev = &pdev->dev;
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int ret;
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/* Allocate the private data */
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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ret = rsrc_card_parse_of(np, priv, dev);
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if (ret < 0) {
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if (ret != -EPROBE_DEFER)
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dev_err(dev, "parse error %d\n", ret);
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goto err;
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}
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snd_soc_card_set_drvdata(&priv->snd_card, priv);
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ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
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if (ret >= 0)
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return ret;
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err:
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rsrc_card_unref(&priv->snd_card);
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return ret;
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}
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static int rsrc_card_remove(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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return rsrc_card_unref(card);
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}
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static struct platform_driver rsrc_card = {
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.driver = {
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.name = "renesas-src-audio-card",
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.of_match_table = rsrc_card_of_match,
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},
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.probe = rsrc_card_probe,
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.remove = rsrc_card_remove,
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};
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module_platform_driver(rsrc_card);
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MODULE_ALIAS("platform:renesas-src-audio-card");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Renesas Sampling Rate Convert Sound Card");
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MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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