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656 lines
16 KiB
656 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// simple-card-utils.c |
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// |
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// Copyright (c) 2016 Kuninori Morimoto <[email protected]> |
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#include <linux/clk.h> |
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#include <linux/gpio.h> |
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#include <linux/gpio/consumer.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/of_gpio.h> |
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#include <linux/of_graph.h> |
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#include <sound/jack.h> |
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#include <sound/simple_card_utils.h> |
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void asoc_simple_convert_fixup(struct asoc_simple_data *data, |
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struct snd_pcm_hw_params *params) |
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{ |
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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 (data->convert_rate) |
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rate->min = |
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rate->max = data->convert_rate; |
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if (data->convert_channels) |
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channels->min = |
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channels->max = data->convert_channels; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup); |
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void asoc_simple_parse_convert(struct device *dev, |
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struct device_node *np, |
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char *prefix, |
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struct asoc_simple_data *data) |
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{ |
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char prop[128]; |
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if (!prefix) |
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prefix = ""; |
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/* sampling rate convert */ |
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snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate"); |
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of_property_read_u32(np, prop, &data->convert_rate); |
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/* channels transfer */ |
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snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels"); |
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of_property_read_u32(np, prop, &data->convert_channels); |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_convert); |
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int asoc_simple_parse_daifmt(struct device *dev, |
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struct device_node *node, |
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struct device_node *codec, |
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char *prefix, |
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unsigned int *retfmt) |
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{ |
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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 (!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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dev_dbg(dev, "Revert to legacy daifmt parsing\n"); |
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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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of_node_put(bitclkmaster); |
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of_node_put(framemaster); |
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*retfmt = daifmt; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_daifmt); |
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int asoc_simple_set_dailink_name(struct device *dev, |
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struct snd_soc_dai_link *dai_link, |
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const char *fmt, ...) |
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{ |
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va_list ap; |
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char *name = NULL; |
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int ret = -ENOMEM; |
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va_start(ap, fmt); |
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name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap); |
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va_end(ap); |
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if (name) { |
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ret = 0; |
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dai_link->name = name; |
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dai_link->stream_name = name; |
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} |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_set_dailink_name); |
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int asoc_simple_parse_card_name(struct snd_soc_card *card, |
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char *prefix) |
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{ |
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int ret; |
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if (!prefix) |
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prefix = ""; |
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/* Parse the card name from DT */ |
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ret = snd_soc_of_parse_card_name(card, "label"); |
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if (ret < 0 || !card->name) { |
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char prop[128]; |
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snprintf(prop, sizeof(prop), "%sname", prefix); |
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ret = snd_soc_of_parse_card_name(card, prop); |
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if (ret < 0) |
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return ret; |
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} |
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if (!card->name && card->dai_link) |
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card->name = card->dai_link->name; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_card_name); |
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static int asoc_simple_clk_enable(struct asoc_simple_dai *dai) |
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{ |
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if (dai) |
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return clk_prepare_enable(dai->clk); |
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return 0; |
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} |
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static void asoc_simple_clk_disable(struct asoc_simple_dai *dai) |
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{ |
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if (dai) |
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clk_disable_unprepare(dai->clk); |
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} |
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int asoc_simple_parse_clk(struct device *dev, |
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struct device_node *node, |
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struct asoc_simple_dai *simple_dai, |
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struct snd_soc_dai_link_component *dlc) |
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{ |
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struct clk *clk; |
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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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clk = devm_get_clk_from_child(dev, node, NULL); |
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if (!IS_ERR(clk)) { |
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simple_dai->sysclk = clk_get_rate(clk); |
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simple_dai->clk = clk; |
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} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) { |
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simple_dai->sysclk = val; |
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} else { |
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clk = devm_get_clk_from_child(dev, dlc->of_node, NULL); |
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if (!IS_ERR(clk)) |
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simple_dai->sysclk = clk_get_rate(clk); |
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} |
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if (of_property_read_bool(node, "system-clock-direction-out")) |
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simple_dai->clk_direction = SND_SOC_CLOCK_OUT; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_clk); |
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int asoc_simple_startup(struct snd_pcm_substream *substream) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
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struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); |
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int ret; |
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ret = asoc_simple_clk_enable(dai_props->cpu_dai); |
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if (ret) |
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return ret; |
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ret = asoc_simple_clk_enable(dai_props->codec_dai); |
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if (ret) |
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asoc_simple_clk_disable(dai_props->cpu_dai); |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_startup); |
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void asoc_simple_shutdown(struct snd_pcm_substream *substream) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
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struct simple_dai_props *dai_props = |
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simple_priv_to_props(priv, rtd->num); |
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if (dai_props->mclk_fs) { |
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snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN); |
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snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT); |
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} |
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asoc_simple_clk_disable(dai_props->cpu_dai); |
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asoc_simple_clk_disable(dai_props->codec_dai); |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_shutdown); |
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static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai, |
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unsigned long rate) |
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{ |
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if (!simple_dai) |
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return 0; |
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if (!simple_dai->clk) |
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return 0; |
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if (clk_get_rate(simple_dai->clk) == rate) |
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return 0; |
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return clk_set_rate(simple_dai->clk, rate); |
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} |
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int asoc_simple_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 = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
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struct simple_dai_props *dai_props = |
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simple_priv_to_props(priv, rtd->num); |
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unsigned int mclk, mclk_fs = 0; |
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int ret = 0; |
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if (dai_props->mclk_fs) |
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mclk_fs = dai_props->mclk_fs; |
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if (mclk_fs) { |
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mclk = params_rate(params) * mclk_fs; |
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ret = asoc_simple_set_clk_rate(dai_props->codec_dai, mclk); |
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if (ret < 0) |
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return ret; |
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ret = asoc_simple_set_clk_rate(dai_props->cpu_dai, mclk); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, |
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SND_SOC_CLOCK_IN); |
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if (ret && ret != -ENOTSUPP) |
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goto err; |
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ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, |
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SND_SOC_CLOCK_OUT); |
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if (ret && ret != -ENOTSUPP) |
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goto err; |
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} |
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return 0; |
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err: |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_hw_params); |
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int asoc_simple_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 asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
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struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); |
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asoc_simple_convert_fixup(&dai_props->adata, params); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup); |
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static int asoc_simple_init_dai(struct snd_soc_dai *dai, |
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struct asoc_simple_dai *simple_dai) |
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{ |
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int ret; |
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if (!simple_dai) |
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return 0; |
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if (simple_dai->sysclk) { |
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ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk, |
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simple_dai->clk_direction); |
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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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return ret; |
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} |
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} |
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if (simple_dai->slots) { |
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ret = snd_soc_dai_set_tdm_slot(dai, |
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simple_dai->tx_slot_mask, |
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simple_dai->rx_slot_mask, |
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simple_dai->slots, |
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simple_dai->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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return ret; |
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} |
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} |
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return 0; |
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} |
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static int asoc_simple_init_dai_link_params(struct snd_soc_pcm_runtime *rtd, |
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struct simple_dai_props *dai_props) |
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{ |
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struct snd_soc_dai_link *dai_link = rtd->dai_link; |
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struct snd_soc_component *component; |
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struct snd_soc_pcm_stream *params; |
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struct snd_pcm_hardware hw; |
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int i, ret, stream; |
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/* Only codecs should have non_legacy_dai_naming set. */ |
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for_each_rtd_components(rtd, i, component) { |
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if (!component->driver->non_legacy_dai_naming) |
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return 0; |
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} |
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/* Assumes the capabilities are the same for all supported streams */ |
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for_each_pcm_streams(stream) { |
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ret = snd_soc_runtime_calc_hw(rtd, &hw, stream); |
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if (ret == 0) |
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break; |
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} |
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if (ret < 0) { |
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dev_err(rtd->dev, "simple-card: no valid dai_link params\n"); |
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return ret; |
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} |
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params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL); |
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if (!params) |
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return -ENOMEM; |
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params->formats = hw.formats; |
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params->rates = hw.rates; |
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params->rate_min = hw.rate_min; |
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params->rate_max = hw.rate_max; |
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params->channels_min = hw.channels_min; |
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params->channels_max = hw.channels_max; |
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dai_link->params = params; |
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dai_link->num_params = 1; |
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return 0; |
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} |
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int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
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struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); |
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int ret; |
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ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, 0), |
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dai_props->codec_dai); |
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if (ret < 0) |
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return ret; |
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ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, 0), |
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dai_props->cpu_dai); |
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if (ret < 0) |
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return ret; |
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ret = asoc_simple_init_dai_link_params(rtd, dai_props); |
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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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EXPORT_SYMBOL_GPL(asoc_simple_dai_init); |
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void asoc_simple_canonicalize_platform(struct snd_soc_dai_link *dai_link) |
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{ |
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/* Assumes platform == cpu */ |
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if (!dai_link->platforms->of_node) |
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dai_link->platforms->of_node = dai_link->cpus->of_node; |
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/* |
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* DPCM BE can be no platform. |
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* Alloced memory will be waste, but not leak. |
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*/ |
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if (!dai_link->platforms->of_node) |
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dai_link->num_platforms = 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform); |
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void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link *dai_link, |
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int is_single_links) |
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{ |
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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 (is_single_links) |
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dai_link->cpus->dai_name = NULL; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu); |
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int asoc_simple_clean_reference(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 i; |
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for_each_card_prelinks(card, i, dai_link) { |
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of_node_put(dai_link->cpus->of_node); |
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of_node_put(dai_link->codecs->of_node); |
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} |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_clean_reference); |
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int asoc_simple_parse_routing(struct snd_soc_card *card, |
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char *prefix) |
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{ |
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struct device_node *node = card->dev->of_node; |
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char prop[128]; |
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if (!prefix) |
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prefix = ""; |
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snprintf(prop, sizeof(prop), "%s%s", prefix, "routing"); |
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if (!of_property_read_bool(node, prop)) |
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return 0; |
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return snd_soc_of_parse_audio_routing(card, prop); |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_routing); |
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int asoc_simple_parse_widgets(struct snd_soc_card *card, |
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char *prefix) |
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{ |
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struct device_node *node = card->dev->of_node; |
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char prop[128]; |
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if (!prefix) |
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prefix = ""; |
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snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets"); |
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if (of_property_read_bool(node, prop)) |
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return snd_soc_of_parse_audio_simple_widgets(card, prop); |
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/* no widgets is not error */ |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets); |
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int asoc_simple_parse_pin_switches(struct snd_soc_card *card, |
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char *prefix) |
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{ |
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const unsigned int nb_controls_max = 16; |
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const char **strings, *control_name; |
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struct snd_kcontrol_new *controls; |
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struct device *dev = card->dev; |
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unsigned int i, nb_controls; |
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char prop[128]; |
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int ret; |
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if (!prefix) |
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prefix = ""; |
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snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches"); |
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if (!of_property_read_bool(dev->of_node, prop)) |
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return 0; |
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strings = devm_kcalloc(dev, nb_controls_max, |
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sizeof(*strings), GFP_KERNEL); |
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if (!strings) |
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return -ENOMEM; |
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ret = of_property_read_string_array(dev->of_node, prop, |
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strings, nb_controls_max); |
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if (ret < 0) |
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return ret; |
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nb_controls = (unsigned int)ret; |
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controls = devm_kcalloc(dev, nb_controls, |
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sizeof(*controls), GFP_KERNEL); |
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if (!controls) |
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return -ENOMEM; |
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for (i = 0; i < nb_controls; i++) { |
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control_name = devm_kasprintf(dev, GFP_KERNEL, |
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"%s Switch", strings[i]); |
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if (!control_name) |
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return -ENOMEM; |
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controls[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER; |
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controls[i].name = control_name; |
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controls[i].info = snd_soc_dapm_info_pin_switch; |
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controls[i].get = snd_soc_dapm_get_pin_switch; |
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controls[i].put = snd_soc_dapm_put_pin_switch; |
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controls[i].private_value = (unsigned long)strings[i]; |
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} |
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card->controls = controls; |
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card->num_controls = nb_controls; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches); |
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int asoc_simple_init_jack(struct snd_soc_card *card, |
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struct asoc_simple_jack *sjack, |
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int is_hp, char *prefix, |
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char *pin) |
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{ |
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struct device *dev = card->dev; |
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enum of_gpio_flags flags; |
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char prop[128]; |
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char *pin_name; |
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char *gpio_name; |
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int mask; |
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int det; |
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if (!prefix) |
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prefix = ""; |
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sjack->gpio.gpio = -ENOENT; |
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if (is_hp) { |
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snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix); |
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pin_name = pin ? pin : "Headphones"; |
|
gpio_name = "Headphone detection"; |
|
mask = SND_JACK_HEADPHONE; |
|
} else { |
|
snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix); |
|
pin_name = pin ? pin : "Mic Jack"; |
|
gpio_name = "Mic detection"; |
|
mask = SND_JACK_MICROPHONE; |
|
} |
|
|
|
det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags); |
|
if (det == -EPROBE_DEFER) |
|
return -EPROBE_DEFER; |
|
|
|
if (gpio_is_valid(det)) { |
|
sjack->pin.pin = pin_name; |
|
sjack->pin.mask = mask; |
|
|
|
sjack->gpio.name = gpio_name; |
|
sjack->gpio.report = mask; |
|
sjack->gpio.gpio = det; |
|
sjack->gpio.invert = !!(flags & OF_GPIO_ACTIVE_LOW); |
|
sjack->gpio.debounce_time = 150; |
|
|
|
snd_soc_card_jack_new(card, pin_name, mask, |
|
&sjack->jack, |
|
&sjack->pin, 1); |
|
|
|
snd_soc_jack_add_gpios(&sjack->jack, 1, |
|
&sjack->gpio); |
|
} |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(asoc_simple_init_jack); |
|
|
|
int asoc_simple_init_priv(struct asoc_simple_priv *priv, |
|
struct link_info *li) |
|
{ |
|
struct snd_soc_card *card = simple_priv_to_card(priv); |
|
struct device *dev = simple_priv_to_dev(priv); |
|
struct snd_soc_dai_link *dai_link; |
|
struct simple_dai_props *dai_props; |
|
struct asoc_simple_dai *dais; |
|
struct snd_soc_codec_conf *cconf = NULL; |
|
int i; |
|
|
|
dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL); |
|
dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL); |
|
dais = devm_kcalloc(dev, li->dais, sizeof(*dais), GFP_KERNEL); |
|
if (!dai_props || !dai_link || !dais) |
|
return -ENOMEM; |
|
|
|
if (li->conf) { |
|
cconf = devm_kcalloc(dev, li->conf, sizeof(*cconf), GFP_KERNEL); |
|
if (!cconf) |
|
return -ENOMEM; |
|
} |
|
|
|
/* |
|
* Use snd_soc_dai_link_component instead of legacy style |
|
* It is codec only. but cpu/platform will be supported in the future. |
|
* see |
|
* soc-core.c :: snd_soc_init_multicodec() |
|
* |
|
* "platform" might be removed |
|
* see |
|
* simple-card-utils.c :: asoc_simple_canonicalize_platform() |
|
*/ |
|
for (i = 0; i < li->link; i++) { |
|
dai_link[i].cpus = &dai_props[i].cpus; |
|
dai_link[i].num_cpus = 1; |
|
dai_link[i].codecs = &dai_props[i].codecs; |
|
dai_link[i].num_codecs = 1; |
|
dai_link[i].platforms = &dai_props[i].platforms; |
|
dai_link[i].num_platforms = 1; |
|
} |
|
|
|
priv->dai_props = dai_props; |
|
priv->dai_link = dai_link; |
|
priv->dais = dais; |
|
priv->codec_conf = cconf; |
|
|
|
card->dai_link = priv->dai_link; |
|
card->num_links = li->link; |
|
card->codec_conf = cconf; |
|
card->num_configs = li->conf; |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(asoc_simple_init_priv); |
|
|
|
/* Module information */ |
|
MODULE_AUTHOR("Kuninori Morimoto <[email protected]>"); |
|
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); |
|
MODULE_LICENSE("GPL v2");
|
|
|