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ASoC: SOF: Intel: Add Intel specific HDA PCM operations
Add PCM operations for Intel HDA based DSPs. Signed-off-by: Keyon Jie <yang.jie@linux.intel.com> Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Liam Girdwood
Mark Brown
parent
d16046ffa6
commit
c6be710f5e
240
sound/soc/sof/intel/hda-pcm.c
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240
sound/soc/sof/intel/hda-pcm.c
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
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// Rander Wang <rander.wang@intel.com>
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// Keyon Jie <yang.jie@linux.intel.com>
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//
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/*
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* Hardware interface for generic Intel audio DSP HDA IP
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*/
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#include <sound/hdaudio_ext.h>
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#include <sound/hda_register.h>
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#include <sound/pcm_params.h>
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#include "../ops.h"
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#include "hda.h"
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#define SDnFMT_BASE(x) ((x) << 14)
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#define SDnFMT_MULT(x) (((x) - 1) << 11)
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#define SDnFMT_DIV(x) (((x) - 1) << 8)
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#define SDnFMT_BITS(x) ((x) << 4)
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#define SDnFMT_CHAN(x) ((x) << 0)
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static inline u32 get_mult_div(struct snd_sof_dev *sdev, int rate)
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{
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switch (rate) {
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case 8000:
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return SDnFMT_DIV(6);
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case 9600:
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return SDnFMT_DIV(5);
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case 11025:
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return SDnFMT_BASE(1) | SDnFMT_DIV(4);
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case 16000:
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return SDnFMT_DIV(3);
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case 22050:
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return SDnFMT_BASE(1) | SDnFMT_DIV(2);
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case 32000:
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return SDnFMT_DIV(3) | SDnFMT_MULT(2);
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case 44100:
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return SDnFMT_BASE(1);
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case 48000:
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return 0;
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case 88200:
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return SDnFMT_BASE(1) | SDnFMT_MULT(2);
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case 96000:
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return SDnFMT_MULT(2);
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case 176400:
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return SDnFMT_BASE(1) | SDnFMT_MULT(4);
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case 192000:
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return SDnFMT_MULT(4);
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default:
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dev_warn(sdev->dev, "can't find div rate %d using 48kHz\n",
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rate);
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return 0; /* use 48KHz if not found */
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}
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};
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static inline u32 get_bits(struct snd_sof_dev *sdev, int sample_bits)
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{
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switch (sample_bits) {
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case 8:
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return SDnFMT_BITS(0);
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case 16:
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return SDnFMT_BITS(1);
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case 20:
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return SDnFMT_BITS(2);
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case 24:
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return SDnFMT_BITS(3);
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case 32:
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return SDnFMT_BITS(4);
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default:
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dev_warn(sdev->dev, "can't find %d bits using 16bit\n",
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sample_bits);
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return SDnFMT_BITS(1); /* use 16bits format if not found */
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}
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};
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int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct sof_ipc_stream_params *ipc_params)
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{
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struct hdac_stream *hstream = substream->runtime->private_data;
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struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream);
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struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
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struct snd_dma_buffer *dmab;
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int ret;
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u32 size, rate, bits;
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size = params_buffer_bytes(params);
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rate = get_mult_div(sdev, params_rate(params));
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bits = get_bits(sdev, params_width(params));
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hstream->substream = substream;
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dmab = substream->runtime->dma_buffer_p;
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hstream->format_val = rate | bits | (params_channels(params) - 1);
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hstream->bufsize = size;
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hstream->period_bytes = params_period_bytes(params);
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hstream->no_period_wakeup =
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(params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) &&
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(params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP);
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ret = hda_dsp_stream_hw_params(sdev, stream, dmab, params);
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if (ret < 0) {
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dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret);
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return ret;
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}
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/* disable SPIB, to enable buffer wrap for stream */
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hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0);
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/* set host_period_bytes to 0 if no IPC position */
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if (hda && hda->no_ipc_position)
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ipc_params->host_period_bytes = 0;
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ipc_params->stream_tag = hstream->stream_tag;
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return 0;
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}
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int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream, int cmd)
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{
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struct hdac_stream *hstream = substream->runtime->private_data;
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struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream);
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return hda_dsp_stream_trigger(sdev, stream, cmd);
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}
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snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct hdac_stream *hstream = substream->runtime->private_data;
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struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
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struct snd_sof_pcm *spcm;
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snd_pcm_uframes_t pos;
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spcm = snd_sof_find_spcm_dai(sdev, rtd);
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if (!spcm) {
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dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
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rtd->dai_link->id);
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return 0;
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}
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if (hda && !hda->no_ipc_position) {
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/* read position from IPC position */
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pos = spcm->stream[substream->stream].posn.host_posn;
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goto found;
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}
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/*
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* DPIB/posbuf position mode:
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* For Playback, Use DPIB register from HDA space which
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* reflects the actual data transferred.
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* For Capture, Use the position buffer for pointer, as DPIB
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* is not accurate enough, its update may be completed
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* earlier than the data written to DDR.
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*/
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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pos = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
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AZX_REG_VS_SDXDPIB_XBASE +
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(AZX_REG_VS_SDXDPIB_XINTERVAL *
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hstream->index));
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} else {
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/*
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* For capture stream, we need more workaround to fix the
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* position incorrect issue:
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*
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* 1. Wait at least 20us before reading position buffer after
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* the interrupt generated(IOC), to make sure position update
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* happens on frame boundary i.e. 20.833uSec for 48KHz.
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* 2. Perform a dummy Read to DPIB register to flush DMA
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* position value.
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* 3. Read the DMA Position from posbuf. Now the readback
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* value should be >= period boundary.
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*/
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usleep_range(20, 21);
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snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
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AZX_REG_VS_SDXDPIB_XBASE +
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(AZX_REG_VS_SDXDPIB_XINTERVAL *
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hstream->index));
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pos = snd_hdac_stream_get_pos_posbuf(hstream);
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}
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if (pos >= hstream->bufsize)
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pos = 0;
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found:
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pos = bytes_to_frames(substream->runtime, pos);
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dev_vdbg(sdev->dev, "PCM: stream %d dir %d position %lu\n",
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hstream->index, substream->stream, pos);
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return pos;
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}
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int hda_dsp_pcm_open(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream)
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{
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struct hdac_ext_stream *dsp_stream;
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int direction = substream->stream;
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dsp_stream = hda_dsp_stream_get(sdev, direction);
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if (!dsp_stream) {
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dev_err(sdev->dev, "error: no stream available\n");
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return -ENODEV;
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}
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/* binding pcm substream to hda stream */
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substream->runtime->private_data = &dsp_stream->hstream;
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return 0;
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}
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int hda_dsp_pcm_close(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream)
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{
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struct hdac_stream *hstream = substream->runtime->private_data;
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int direction = substream->stream;
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int ret;
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ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag);
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if (ret) {
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dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name);
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return -ENODEV;
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}
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/* unbinding pcm substream to hda stream */
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substream->runtime->private_data = NULL;
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return 0;
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}
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