67fcdbfd9e
The assignment of the else and if branches is the same, so the else here is redundant, so we remove it. ./sound/soc/codecs/cs42l43-sdw.c:35:1-3: WARNING: possible condition with no effect (if == else). Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6712 Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20230928085200.48635-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Mark Brown <broonie@kernel.org>
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// CS42L43 CODEC driver SoundWire handling
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//
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// Copyright (C) 2022-2023 Cirrus Logic, Inc. and
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// Cirrus Logic International Semiconductor Ltd.
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#include <linux/errno.h>
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#include <linux/mfd/cs42l43.h>
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#include <linux/mfd/cs42l43-regs.h>
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#include <linux/module.h>
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#include <sound/pcm.h>
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#include <sound/sdw.h>
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#include <sound/soc-component.h>
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#include <sound/soc-dai.h>
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#include <sound/soc.h>
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#include "cs42l43.h"
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int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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struct cs42l43_codec *priv = snd_soc_component_get_drvdata(dai->component);
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struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
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struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent);
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struct sdw_stream_config sconfig = {0};
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struct sdw_port_config pconfig = {0};
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int ret;
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if (!sdw_stream)
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return -EINVAL;
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snd_sdw_params_to_config(substream, params, &sconfig, &pconfig);
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pconfig.num = dai->id;
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ret = sdw_stream_add_slave(sdw, &sconfig, &pconfig, 1, sdw_stream);
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if (ret) {
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dev_err(priv->dev, "Failed to add sdw stream: %d\n", ret);
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_add_peripheral, SND_SOC_CS42L43);
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int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct cs42l43_codec *priv = snd_soc_component_get_drvdata(dai->component);
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struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
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struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent);
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if (!sdw_stream)
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return -EINVAL;
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return sdw_stream_remove_slave(sdw, sdw_stream);
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}
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EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_remove_peripheral, SND_SOC_CS42L43);
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int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction)
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{
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snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
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return 0;
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}
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EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_set_stream, SND_SOC_CS42L43);
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MODULE_DESCRIPTION("CS42L43 CODEC SoundWire Driver");
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MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.cirrus.com>");
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MODULE_LICENSE("GPL");
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