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https://github.com/hardkernel/linux.git
synced 2026-06-09 20:32:04 +09:00
Revert "ASoC: rockchip: Add dmaengine for TRCM mode"
This reverts commit 269ae19c7a.
Change-Id: I5df336bf082ced6df47a3c424522d50c552a2045
Signed-off-by: Wu Liangqing <wlq@rock-chips.com>
This commit is contained in:
@@ -31,7 +31,6 @@ config SND_SOC_ROCKCHIP_I2S_TDM
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tristate "Rockchip I2S/TDM Device Driver"
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depends on HAVE_CLK && SND_SOC_ROCKCHIP
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select SND_SOC_GENERIC_DMAENGINE_PCM
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select SND_SOC_ROCKCHIP_TRCM
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help
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Say Y or M if you want to add support for the I2S/TDM driver for
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Rockchip I2S/TDM devices, found in Rockchip SoCs. These devices
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@@ -95,12 +94,6 @@ config SND_SOC_ROCKCHIP_SPDIFRX
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Say Y or M if you want to add support for SPDIFRX driver for
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Rockchip SPDIF receiver device.
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config SND_SOC_ROCKCHIP_TRCM
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tristate "Rockchip TRCM Pcm Driver"
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depends on SND_SOC_ROCKCHIP
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help
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Say Y or M if you want to add support for TRCM driver.
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config SND_SOC_ROCKCHIP_VAD
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tristate "Rockchip Voice Activity Detection Driver"
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depends on HAVE_CLK && SND_SOC_ROCKCHIP
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@@ -10,7 +10,6 @@ snd-soc-rockchip-pdm-objs := rockchip_pdm.o
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snd-soc-rockchip-sai-objs := rockchip_sai.o
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snd-soc-rockchip-spdif-objs := rockchip_spdif.o
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snd-soc-rockchip-spdifrx-objs := rockchip_spdifrx.o
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snd-soc-rockchip-trcm-objs := rockchip_trcm.o
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snd-soc-rockchip-vad-objs := rockchip_vad.o
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ifdef CONFIG_THUMB2_KERNEL
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snd-soc-rockchip-vad-$(CONFIG_THUMB2_KERNEL) += vad_preprocess_thumb.o
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@@ -29,7 +28,6 @@ obj-$(CONFIG_SND_SOC_ROCKCHIP_PDM) += snd-soc-rockchip-pdm.o
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obj-$(CONFIG_SND_SOC_ROCKCHIP_SAI) += snd-soc-rockchip-sai.o
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obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIF) += snd-soc-rockchip-spdif.o
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obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIFRX) += snd-soc-rockchip-spdifrx.o
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obj-$(CONFIG_SND_SOC_ROCKCHIP_TRCM) += snd-soc-rockchip-trcm.o
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obj-$(CONFIG_SND_SOC_ROCKCHIP_VAD) += snd-soc-rockchip-vad.o
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snd-soc-rockchip-hdmi-objs := rockchip_hdmi.o
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@@ -1,578 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Rockchip TRCM Pcm Driver
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*
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* Copyright (c) 2023 Rockchip Electronics Co. Ltd.
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* Author: Sugar Zhang <sugar.zhang@rock-chips.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/dmaengine.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "rockchip_trcm.h"
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#define DMA_GUARD_BUFFER_SIZE 64
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static unsigned int prealloc_buffer_size_kbytes = 512;
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module_param(prealloc_buffer_size_kbytes, uint, 0444);
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MODULE_PARM_DESC(prealloc_buffer_size_kbytes, "Preallocate DMA buffer size (KB).");
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struct dmaengine_dma_guard {
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dma_addr_t dma_addr;
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unsigned char *dma_area;
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};
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struct dmaengine_trcm {
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struct device *dev;
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struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];
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struct dmaengine_dma_guard guard[SNDRV_PCM_STREAM_LAST + 1];
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struct snd_soc_component component;
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};
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struct dmaengine_trcm_runtime_data {
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struct dmaengine_trcm *parent;
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struct dma_chan *dma_chan;
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dma_cookie_t cookie;
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unsigned int frame_bytes;
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unsigned int channels;
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int stream;
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};
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static inline ssize_t trcm_channels_to_bytes(struct dmaengine_trcm_runtime_data *prtd,
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int channels)
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{
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return (prtd->frame_bytes / prtd->channels) * channels;
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}
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static inline ssize_t trcm_frames_to_bytes(struct dmaengine_trcm_runtime_data *prtd,
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snd_pcm_sframes_t size)
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{
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return size * prtd->frame_bytes;
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}
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static inline snd_pcm_sframes_t trcm_bytes_to_frames(struct dmaengine_trcm_runtime_data *prtd,
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ssize_t size)
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{
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return size / prtd->frame_bytes;
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}
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static inline struct dmaengine_trcm *soc_component_to_trcm(struct snd_soc_component *p)
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{
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return container_of(p, struct dmaengine_trcm, component);
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}
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static inline struct dmaengine_trcm_runtime_data *substream_to_prtd(
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const struct snd_pcm_substream *substream)
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{
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if (!substream->runtime)
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return NULL;
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return substream->runtime->private_data;
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}
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static struct dma_chan *snd_dmaengine_trcm_get_chan(struct snd_pcm_substream *substream)
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{
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struct dmaengine_trcm_runtime_data *prtd = substream_to_prtd(substream);
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return prtd->dma_chan;
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}
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static struct device *dmaengine_dma_dev(struct dmaengine_trcm *trcm,
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struct snd_pcm_substream *substream)
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{
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if (!trcm->chan[substream->stream])
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return NULL;
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return trcm->chan[substream->stream]->device->dev;
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}
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static int dmaengine_trcm_hw_params(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct dmaengine_trcm_runtime_data *prtd = substream_to_prtd(substream);
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struct dma_chan *chan = snd_dmaengine_trcm_get_chan(substream);
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struct dma_slave_config slave_config;
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int ret;
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memset(&slave_config, 0, sizeof(slave_config));
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ret = snd_dmaengine_pcm_prepare_slave_config(substream, params, &slave_config);
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if (ret)
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return ret;
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ret = dmaengine_slave_config(chan, &slave_config);
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if (ret)
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return ret;
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prtd->frame_bytes = snd_pcm_format_size(params_format(params),
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params_channels(params));
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prtd->channels = params_channels(params);
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return 0;
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}
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static int
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dmaengine_pcm_set_runtime_hwparams(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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struct dmaengine_trcm *trcm = soc_component_to_trcm(component);
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struct device *dma_dev = dmaengine_dma_dev(trcm, substream);
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struct dma_chan *chan = trcm->chan[substream->stream];
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struct snd_dmaengine_dai_dma_data *dma_data;
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struct snd_pcm_hardware hw;
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if (rtd->dai_link->num_cpus > 1) {
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dev_err(rtd->dev,
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"%s doesn't support Multi CPU yet\n", __func__);
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return -EINVAL;
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}
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dma_data = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
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memset(&hw, 0, sizeof(hw));
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hw.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_INTERLEAVED;
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hw.periods_min = 2;
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hw.periods_max = UINT_MAX;
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hw.period_bytes_min = 256;
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hw.period_bytes_max = dma_get_max_seg_size(dma_dev);
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hw.buffer_bytes_max = SIZE_MAX;
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hw.fifo_size = dma_data->fifo_size;
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snd_dmaengine_pcm_refine_runtime_hwparams(substream,
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dma_data,
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&hw,
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chan);
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return snd_soc_set_runtime_hwparams(substream, &hw);
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}
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static int dmaengine_trcm_open(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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struct dmaengine_trcm *trcm = soc_component_to_trcm(component);
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struct dma_chan *chan = trcm->chan[substream->stream];
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struct dmaengine_trcm_runtime_data *prtd;
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int ret;
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if (!chan)
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return -ENXIO;
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ret = dmaengine_pcm_set_runtime_hwparams(component, substream);
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if (ret)
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return ret;
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ret = snd_pcm_hw_constraint_integer(substream->runtime,
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SNDRV_PCM_HW_PARAM_PERIODS);
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if (ret < 0)
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return ret;
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prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
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if (!prtd)
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return -ENOMEM;
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prtd->parent = trcm;
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prtd->stream = substream->stream;
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prtd->dma_chan = chan;
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substream->runtime->private_data = prtd;
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return 0;
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}
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static int dmaengine_trcm_close(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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struct dmaengine_trcm_runtime_data *prtd = substream_to_prtd(substream);
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dmaengine_synchronize(prtd->dma_chan);
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kfree(prtd);
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return 0;
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}
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static snd_pcm_uframes_t dmaengine_trcm_pointer(
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struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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struct dmaengine_trcm_runtime_data *prtd = substream_to_prtd(substream);
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struct dma_tx_state state;
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unsigned int buf_size;
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unsigned int pos = 0;
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dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state);
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buf_size = snd_pcm_lib_buffer_bytes(substream);
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if (state.residue > 0 && state.residue <= buf_size)
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pos = buf_size - state.residue;
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return trcm_bytes_to_frames(prtd, pos);
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}
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static void dmaengine_trcm_dma_complete(void *arg)
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{
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struct snd_pcm_substream *substream = arg;
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if (!substream->runtime)
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return;
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snd_pcm_period_elapsed(substream);
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}
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static int dmaengine_trcm_prepare_and_submit(struct snd_pcm_substream *substream)
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{
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struct dmaengine_trcm_runtime_data *prtd = substream_to_prtd(substream);
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struct dma_chan *chan = prtd->dma_chan;
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struct dma_async_tx_descriptor *desc;
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enum dma_transfer_direction direction;
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unsigned long flags = DMA_CTRL_ACK;
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direction = snd_pcm_substream_to_dma_direction(substream);
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if (!substream->runtime->no_period_wakeup)
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flags |= DMA_PREP_INTERRUPT;
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desc = dmaengine_prep_dma_cyclic(chan,
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substream->runtime->dma_addr,
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snd_pcm_lib_buffer_bytes(substream),
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snd_pcm_lib_period_bytes(substream), direction, flags);
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if (!desc)
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return -ENOMEM;
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desc->callback = dmaengine_trcm_dma_complete;
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desc->callback_param = substream;
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prtd->cookie = dmaengine_submit(desc);
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return 0;
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}
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int dmaengine_trcm_dma_guard_ctrl(struct snd_soc_component *component,
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int stream, bool en)
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{
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struct dmaengine_trcm *trcm = soc_component_to_trcm(component);
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struct dmaengine_dma_guard *guard = &trcm->guard[stream];
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struct dma_chan *chan = trcm->chan[stream];
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struct dma_async_tx_descriptor *desc;
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enum dma_transfer_direction direction;
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if (!chan)
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return 0;
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if (!en)
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return dmaengine_terminate_sync(chan);
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direction = stream ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
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desc = dmaengine_prep_dma_cyclic(chan, guard->dma_addr,
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DMA_GUARD_BUFFER_SIZE,
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DMA_GUARD_BUFFER_SIZE,
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direction,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!desc) {
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dev_err(component->dev, "Failed to get dma desc\n");
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return -ENOMEM;
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}
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desc->callback = NULL;
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desc->callback_param = NULL;
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dmaengine_submit(desc);
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dma_async_issue_pending(chan);
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return 0;
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}
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EXPORT_SYMBOL_GPL(dmaengine_trcm_dma_guard_ctrl);
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static int dmaengine_trcm_trigger(struct snd_soc_component *component,
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struct snd_pcm_substream *substream, int cmd)
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{
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struct dmaengine_trcm_runtime_data *prtd = substream_to_prtd(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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int ret;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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dmaengine_terminate_sync(prtd->dma_chan);
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ret = dmaengine_trcm_prepare_and_submit(substream);
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if (ret)
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return ret;
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dma_async_issue_pending(prtd->dma_chan);
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break;
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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dmaengine_resume(prtd->dma_chan);
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break;
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case SNDRV_PCM_TRIGGER_SUSPEND:
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if (runtime->info & SNDRV_PCM_INFO_PAUSE)
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dmaengine_pause(prtd->dma_chan);
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else
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dmaengine_terminate_sync(prtd->dma_chan);
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break;
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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dmaengine_pause(prtd->dma_chan);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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dmaengine_terminate_sync(prtd->dma_chan);
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dmaengine_trcm_dma_guard_ctrl(component, substream->stream, 1);
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break;
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default:
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return -EINVAL;
|
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}
|
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|
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return 0;
|
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}
|
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|
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static int dmaengine_trcm_dma_guard_new(struct snd_soc_component *component,
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struct snd_soc_pcm_runtime *rtd)
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{
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struct dmaengine_trcm *trcm = soc_component_to_trcm(component);
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struct snd_dmaengine_dai_dma_data *dma_data;
|
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struct snd_pcm_substream *substream;
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struct dma_chan *chan;
|
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struct dma_slave_config slave_config;
|
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struct device *dev;
|
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dma_addr_t dma_addr;
|
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unsigned char *dma_area;
|
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unsigned int i;
|
||||
int ret;
|
||||
|
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for_each_pcm_streams(i) {
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substream = rtd->pcm->streams[i].substream;
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dev = dmaengine_dma_dev(trcm, substream);
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chan = trcm->chan[i];
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|
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dma_area = dma_alloc_coherent(dev, DMA_GUARD_BUFFER_SIZE,
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&dma_addr, GFP_KERNEL);
|
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if (!dma_area)
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return -ENOMEM;
|
||||
|
||||
memset(dma_area, 0x0, DMA_GUARD_BUFFER_SIZE);
|
||||
|
||||
trcm->guard[i].dma_addr = dma_addr;
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||||
trcm->guard[i].dma_area = dma_area;
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||||
|
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memset(&slave_config, 0, sizeof(slave_config));
|
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|
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dma_data = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0),
|
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substream);
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||||
snd_dmaengine_pcm_set_config_from_dai_data(substream, dma_data,
|
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&slave_config);
|
||||
|
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ret = dmaengine_slave_config(chan, &slave_config);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dmaengine_trcm_new(struct snd_soc_component *component,
|
||||
struct snd_soc_pcm_runtime *rtd)
|
||||
{
|
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struct dmaengine_trcm *trcm = soc_component_to_trcm(component);
|
||||
struct snd_pcm_substream *substream;
|
||||
size_t prealloc_buffer_size;
|
||||
size_t max_buffer_size;
|
||||
unsigned int i;
|
||||
int ret;
|
||||
|
||||
prealloc_buffer_size = prealloc_buffer_size_kbytes * 1024;
|
||||
max_buffer_size = SIZE_MAX;
|
||||
|
||||
ret = dmaengine_trcm_dma_guard_new(component, rtd);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
for_each_pcm_streams(i) {
|
||||
substream = rtd->pcm->streams[i].substream;
|
||||
if (!substream)
|
||||
continue;
|
||||
|
||||
if (!trcm->chan[i]) {
|
||||
dev_err(component->dev,
|
||||
"Missing dma channel for stream: %d\n", i);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
snd_pcm_set_managed_buffer(substream,
|
||||
SNDRV_DMA_TYPE_DEV_IRAM,
|
||||
dmaengine_dma_dev(trcm, substream),
|
||||
prealloc_buffer_size,
|
||||
max_buffer_size);
|
||||
|
||||
if (rtd->pcm->streams[i].pcm->name[0] == '\0') {
|
||||
strscpy_pad(rtd->pcm->streams[i].pcm->name,
|
||||
rtd->pcm->streams[i].pcm->id,
|
||||
sizeof(rtd->pcm->streams[i].pcm->name));
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct snd_soc_component_driver dmaengine_trcm_component = {
|
||||
.name = SND_DMAENGINE_TRCM_DRV_NAME,
|
||||
.probe_order = SND_SOC_COMP_ORDER_LATE,
|
||||
.open = dmaengine_trcm_open,
|
||||
.close = dmaengine_trcm_close,
|
||||
.hw_params = dmaengine_trcm_hw_params,
|
||||
.trigger = dmaengine_trcm_trigger,
|
||||
.pointer = dmaengine_trcm_pointer,
|
||||
.pcm_construct = dmaengine_trcm_new,
|
||||
};
|
||||
|
||||
static const char * const dmaengine_pcm_dma_channel_names[] = {
|
||||
[SNDRV_PCM_STREAM_PLAYBACK] = "tx",
|
||||
[SNDRV_PCM_STREAM_CAPTURE] = "rx",
|
||||
};
|
||||
|
||||
static int dmaengine_pcm_request_chan_of(struct dmaengine_trcm *trcm,
|
||||
struct device *dev, const struct snd_dmaengine_pcm_config *config)
|
||||
{
|
||||
unsigned int i;
|
||||
const char *name;
|
||||
struct dma_chan *chan;
|
||||
|
||||
for_each_pcm_streams(i) {
|
||||
name = dmaengine_pcm_dma_channel_names[i];
|
||||
chan = dma_request_chan(dev, name);
|
||||
if (IS_ERR(chan)) {
|
||||
/*
|
||||
* Only report probe deferral errors, channels
|
||||
* might not be present for devices that
|
||||
* support only TX or only RX.
|
||||
*/
|
||||
if (PTR_ERR(chan) == -EPROBE_DEFER)
|
||||
return -EPROBE_DEFER;
|
||||
trcm->chan[i] = NULL;
|
||||
} else {
|
||||
trcm->chan[i] = chan;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void dmaengine_pcm_release_chan(struct dmaengine_trcm *trcm)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for_each_pcm_streams(i) {
|
||||
if (!trcm->chan[i])
|
||||
continue;
|
||||
dma_release_channel(trcm->chan[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_dmaengine_trcm_register - Register a dmaengine based TRCM device
|
||||
* @dev: The parent device for the TRCM device
|
||||
*/
|
||||
static int snd_dmaengine_trcm_register(struct device *dev)
|
||||
{
|
||||
const struct snd_soc_component_driver *driver;
|
||||
struct dmaengine_trcm *trcm;
|
||||
int ret;
|
||||
|
||||
trcm = kzalloc(sizeof(*trcm), GFP_KERNEL);
|
||||
if (!trcm)
|
||||
return -ENOMEM;
|
||||
|
||||
trcm->dev = dev;
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
trcm->component.debugfs_prefix = "dma";
|
||||
#endif
|
||||
ret = dmaengine_pcm_request_chan_of(trcm, dev, NULL);
|
||||
if (ret)
|
||||
goto err_free_dma;
|
||||
|
||||
driver = &dmaengine_trcm_component;
|
||||
|
||||
ret = snd_soc_component_initialize(&trcm->component, driver, dev);
|
||||
if (ret)
|
||||
goto err_free_dma;
|
||||
|
||||
ret = snd_soc_add_component(&trcm->component, NULL, 0);
|
||||
if (ret)
|
||||
goto err_free_dma;
|
||||
|
||||
dev_info(dev, "Register PCM for TRCM mode\n");
|
||||
|
||||
return 0;
|
||||
|
||||
err_free_dma:
|
||||
dmaengine_pcm_release_chan(trcm);
|
||||
kfree(trcm);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_dmaengine_trcm_unregister - Removes a dmaengine based TRCM device
|
||||
* @dev: Parent device the TRCM was register with
|
||||
*
|
||||
* Removes a dmaengine based TRCM device previously registered with
|
||||
* snd_dmaengine_trcm_register.
|
||||
*/
|
||||
static void snd_dmaengine_trcm_unregister(struct device *dev)
|
||||
{
|
||||
struct snd_soc_component *component;
|
||||
struct dmaengine_trcm *trcm;
|
||||
|
||||
component = snd_soc_lookup_component(dev, SND_DMAENGINE_TRCM_DRV_NAME);
|
||||
if (!component)
|
||||
return;
|
||||
|
||||
trcm = soc_component_to_trcm(component);
|
||||
|
||||
snd_soc_unregister_component_by_driver(dev, component->driver);
|
||||
dmaengine_pcm_release_chan(trcm);
|
||||
kfree(trcm);
|
||||
}
|
||||
|
||||
static void devm_dmaengine_trcm_release(struct device *dev, void *res)
|
||||
{
|
||||
snd_dmaengine_trcm_unregister(*(struct device **)res);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_snd_dmaengine_trcm_register - resource managed dmaengine TRCM registration
|
||||
* @dev: The parent device for the TRCM device
|
||||
*
|
||||
* Register a dmaengine based TRCM device with automatic unregistration when the
|
||||
* device is unregistered.
|
||||
*/
|
||||
int devm_snd_dmaengine_trcm_register(struct device *dev)
|
||||
{
|
||||
struct device **ptr;
|
||||
int ret;
|
||||
|
||||
ptr = devres_alloc(devm_dmaengine_trcm_release, sizeof(*ptr), GFP_KERNEL);
|
||||
if (!ptr)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = snd_dmaengine_trcm_register(dev);
|
||||
if (ret == 0) {
|
||||
*ptr = dev;
|
||||
devres_add(dev, ptr);
|
||||
} else {
|
||||
devres_free(ptr);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_snd_dmaengine_trcm_register);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
@@ -1,32 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Rockchip TRCM Pcm driver
|
||||
*
|
||||
* Copyright (C) 2023 Rockchip Electronics Co., Ltd
|
||||
* Author: Sugar Zhang <sugar.zhang@rock-chips.com>
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _ROCKCHIP_TRCM_H
|
||||
#define _ROCKCHIP_TRCM_H
|
||||
|
||||
#define SND_DMAENGINE_TRCM_DRV_NAME "snd_dmaengine_trcm"
|
||||
|
||||
#if IS_REACHABLE(CONFIG_SND_SOC_ROCKCHIP_TRCM)
|
||||
int dmaengine_trcm_dma_guard_ctrl(struct snd_soc_component *component,
|
||||
int stream, bool en);
|
||||
int devm_snd_dmaengine_trcm_register(struct device *dev);
|
||||
#else
|
||||
static inline int dmaengine_trcm_dma_guard_ctrl(struct snd_soc_component *component,
|
||||
int stream, bool en)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
|
||||
static inline int devm_snd_dmaengine_trcm_register(struct device *dev)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user