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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9bdca822cb
As we are now passing the filter data as pointers to the drivers, we can take the final step and also pass the filter function the same way. I'm keeping this change separate, as there it's less obvious that this is a net win. Upsides of this are: - The ASoC drivers are completely independent from the DMA engine implementation, which simplifies the Kconfig logic and in theory allows the same sound drivers to be built in a kernel that supports different kinds of dmaengine drivers. - Consistency with other subsystems and drivers On the other hand, we have a few downsides: - The s3c24xx-dma driver now needs to be built-in for the ac97 platform device to be instantiated on s3c2440. - samsung_dmaengine_pcm_config cannot be marked 'const' any more because the filter function pointer needs to be set at runtime. This is safe as long we don't have multiple different DMA engines in thet same system at runtime, but is nonetheless ugly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* Copyright (c) 2009 Samsung Electronics Co. Ltd
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* Author: Jaswinder Singh <jassi.brar@samsung.com>
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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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/* The machine init code calls s3c*_ac97_setup_gpio with
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* one of these defines in order to select appropriate bank
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* of GPIO for AC97 pins
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*/
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#define S3C64XX_AC97_GPD 0
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#define S3C64XX_AC97_GPE 1
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#include <linux/dmaengine.h>
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extern void s3c64xx_ac97_setup_gpio(int);
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struct samsung_i2s {
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/* If the Primary DAI has 5.1 Channels */
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#define QUIRK_PRI_6CHAN (1 << 0)
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/* If the I2S block has a Stereo Overlay Channel */
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#define QUIRK_SEC_DAI (1 << 1)
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/*
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* If the I2S block has no internal prescalar or MUX (I2SMOD[10] bit)
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* The Machine driver must provide suitably set clock to the I2S block.
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*/
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#define QUIRK_NO_MUXPSR (1 << 2)
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#define QUIRK_NEED_RSTCLR (1 << 3)
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#define QUIRK_SUPPORTS_TDM (1 << 4)
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#define QUIRK_SUPPORTS_IDMA (1 << 5)
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/* Quirks of the I2S controller */
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u32 quirks;
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dma_addr_t idma_addr;
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};
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/**
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* struct s3c_audio_pdata - common platform data for audio device drivers
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* @cfg_gpio: Callback function to setup mux'ed pins in I2S/PCM/AC97 mode
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*/
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struct s3c_audio_pdata {
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int (*cfg_gpio)(struct platform_device *);
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dma_filter_fn dma_filter;
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void *dma_playback;
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void *dma_capture;
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void *dma_play_sec;
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void *dma_capture_mic;
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union {
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struct samsung_i2s i2s;
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} type;
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};
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