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sound: Mark sound_setup() as optional
This method in the sound API is optional since some drivers can do this when probing or as part of SoC init. Mark it as such. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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@ -16,7 +16,7 @@ int sound_setup(struct udevice *dev)
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struct sound_ops *ops = sound_get_ops(dev);
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if (!ops->setup)
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return -ENOSYS;
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return 0;
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return ops->setup(dev);
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}
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@ -54,7 +54,7 @@ void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
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/* Operations for sound */
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struct sound_ops {
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/**
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* setup() - Set up to play a sound
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* setup() - Set up to play a sound (optional)
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*/
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int (*setup)(struct udevice *dev);
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