On Tue, 28 Sep 2021 09:35:57 +0800 Sugar Zhang <sugar.zhang@xxxxxxxxxxxxxx> wrote: > This reverts commit 75b31192fe6ad20b42276b20ee3bdf1493216d63. > > The original purpose of customized pcm was to config prealloc buffer size > flexibly. but, we can do the same thing by soc-generic-dmaengine-pcm. > > And the generic one can generated the better config by querying DMA > capabilities from dmaengine driver rather than the Hard-Coded one. > > e.g. > > the customized one: > > static const struct snd_pcm_hardware snd_rockchip_hardware = { > .info = SNDRV_PCM_INFO_MMAP | > SNDRV_PCM_INFO_MMAP_VALID | > SNDRV_PCM_INFO_PAUSE | > SNDRV_PCM_INFO_RESUME | > SNDRV_PCM_INFO_INTERLEAVED, > ... > > the generic one: > > ret = dma_get_slave_caps(chan, &dma_caps); > if (ret == 0) { > if (dma_caps.cmd_pause && dma_caps.cmd_resume) > hw.info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME; > if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT) > hw.info |= SNDRV_PCM_INFO_BATCH; > ... > > So, let's revert back to use the generic dmaengine pcm. > > Signed-off-by: Sugar Zhang <sugar.zhang@xxxxxxxxxxxxxx> Reviewed-by: John Keeping <john@xxxxxxxxxxxx> > --- > > sound/soc/rockchip/Makefile | 3 +-- > sound/soc/rockchip/rockchip_i2s.c | 3 +-- > sound/soc/rockchip/rockchip_pcm.c | 44 --------------------------------------- > sound/soc/rockchip/rockchip_pcm.h | 11 ---------- > 4 files changed, 2 insertions(+), 59 deletions(-) > delete mode 100644 sound/soc/rockchip/rockchip_pcm.c > delete mode 100644 sound/soc/rockchip/rockchip_pcm.h > > diff --git a/sound/soc/rockchip/Makefile b/sound/soc/rockchip/Makefile > index 65e814d..05b078e 100644 > --- a/sound/soc/rockchip/Makefile > +++ b/sound/soc/rockchip/Makefile > @@ -1,11 +1,10 @@ > # SPDX-License-Identifier: GPL-2.0 > # ROCKCHIP Platform Support > snd-soc-rockchip-i2s-objs := rockchip_i2s.o > -snd-soc-rockchip-pcm-objs := rockchip_pcm.o > snd-soc-rockchip-pdm-objs := rockchip_pdm.o > snd-soc-rockchip-spdif-objs := rockchip_spdif.o > > -obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-rockchip-i2s.o snd-soc-rockchip-pcm.o > +obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-rockchip-i2s.o > obj-$(CONFIG_SND_SOC_ROCKCHIP_PDM) += snd-soc-rockchip-pdm.o > obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIF) += snd-soc-rockchip-spdif.o > > diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c > index 7e89f5b..a6d7656 100644 > --- a/sound/soc/rockchip/rockchip_i2s.c > +++ b/sound/soc/rockchip/rockchip_i2s.c > @@ -20,7 +20,6 @@ > #include <sound/dmaengine_pcm.h> > > #include "rockchip_i2s.h" > -#include "rockchip_pcm.h" > > #define DRV_NAME "rockchip-i2s" > > @@ -756,7 +755,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev) > goto err_suspend; > } > > - ret = rockchip_pcm_platform_register(&pdev->dev); > + ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); > if (ret) { > dev_err(&pdev->dev, "Could not register PCM\n"); > goto err_suspend; > diff --git a/sound/soc/rockchip/rockchip_pcm.c b/sound/soc/rockchip/rockchip_pcm.c > deleted file mode 100644 > index 02254e4..0000000 > --- a/sound/soc/rockchip/rockchip_pcm.c > +++ /dev/null > @@ -1,44 +0,0 @@ > -// SPDX-License-Identifier: GPL-2.0-only > -/* > - * Copyright (c) 2018 Rockchip Electronics Co. Ltd. > - */ > - > -#include <linux/device.h> > -#include <linux/init.h> > -#include <linux/module.h> > - > -#include <sound/core.h> > -#include <sound/pcm.h> > -#include <sound/soc.h> > -#include <sound/dmaengine_pcm.h> > - > -#include "rockchip_pcm.h" > - > -static const struct snd_pcm_hardware snd_rockchip_hardware = { > - .info = SNDRV_PCM_INFO_MMAP | > - SNDRV_PCM_INFO_MMAP_VALID | > - SNDRV_PCM_INFO_PAUSE | > - SNDRV_PCM_INFO_RESUME | > - SNDRV_PCM_INFO_INTERLEAVED, > - .period_bytes_min = 32, > - .period_bytes_max = 8192, > - .periods_min = 1, > - .periods_max = 52, > - .buffer_bytes_max = 64 * 1024, > - .fifo_size = 32, > -}; > - > -static const struct snd_dmaengine_pcm_config rk_dmaengine_pcm_config = { > - .pcm_hardware = &snd_rockchip_hardware, > - .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, > - .prealloc_buffer_size = 32 * 1024, > -}; > - > -int rockchip_pcm_platform_register(struct device *dev) > -{ > - return devm_snd_dmaengine_pcm_register(dev, &rk_dmaengine_pcm_config, > - SND_DMAENGINE_PCM_FLAG_COMPAT); > -} > -EXPORT_SYMBOL_GPL(rockchip_pcm_platform_register); > - > -MODULE_LICENSE("GPL v2"); > diff --git a/sound/soc/rockchip/rockchip_pcm.h b/sound/soc/rockchip/rockchip_pcm.h > deleted file mode 100644 > index 7f00e2c..0000000 > --- a/sound/soc/rockchip/rockchip_pcm.h > +++ /dev/null > @@ -1,11 +0,0 @@ > -/* SPDX-License-Identifier: GPL-2.0-only */ > -/* > - * Copyright (c) 2018 Rockchip Electronics Co. Ltd. > - */ > - > -#ifndef _ROCKCHIP_PCM_H > -#define _ROCKCHIP_PCM_H > - > -int rockchip_pcm_platform_register(struct device *dev); > - > -#endif