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Message-Id: <1632792957-80428-1-git-send-email-sugar.zhang@rock-chips.com>
Date: Tue, 28 Sep 2021 09:35:57 +0800
From: Sugar Zhang <sugar.zhang@...k-chips.com>
To: broonie@...nel.org, heiko@...ech.de
Cc: linux-rockchip@...ts.infradead.org,
Sugar Zhang <sugar.zhang@...k-chips.com>,
Liam Girdwood <lgirdwood@...il.com>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, linux-kernel@...r.kernel.org,
alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] Revert "ASoC: rockchip: add config for rockchip dmaengine pcm register"
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@...k-chips.com>
---
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
--
2.7.4
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