| // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) |
| // |
| // This file is provided under a dual BSD/GPLv2 license. When using or |
| // redistributing this file, you may do so under either license. |
| // |
| // Copyright(c) 2018 Intel Corporation. All rights reserved. |
| // |
| // Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com> |
| // Ranjani Sridharan <ranjani.sridharan@linux.intel.com> |
| // Rander Wang <rander.wang@intel.com> |
| // Keyon Jie <yang.jie@linux.intel.com> |
| // |
| |
| /* |
| * Hardware interface for generic Intel audio DSP HDA IP |
| */ |
| |
| #include <linux/moduleparam.h> |
| #include <sound/hda_register.h> |
| #include <sound/pcm_params.h> |
| #include "../sof-audio.h" |
| #include "../ops.h" |
| #include "hda.h" |
| |
| #define SDnFMT_BASE(x) ((x) << 14) |
| #define SDnFMT_MULT(x) (((x) - 1) << 11) |
| #define SDnFMT_DIV(x) (((x) - 1) << 8) |
| #define SDnFMT_BITS(x) ((x) << 4) |
| #define SDnFMT_CHAN(x) ((x) << 0) |
| |
| static bool hda_always_enable_dmi_l1; |
| module_param_named(always_enable_dmi_l1, hda_always_enable_dmi_l1, bool, 0444); |
| MODULE_PARM_DESC(always_enable_dmi_l1, "SOF HDA always enable DMI l1"); |
| |
| u32 hda_dsp_get_mult_div(struct snd_sof_dev *sdev, int rate) |
| { |
| switch (rate) { |
| case 8000: |
| return SDnFMT_DIV(6); |
| case 9600: |
| return SDnFMT_DIV(5); |
| case 11025: |
| return SDnFMT_BASE(1) | SDnFMT_DIV(4); |
| case 16000: |
| return SDnFMT_DIV(3); |
| case 22050: |
| return SDnFMT_BASE(1) | SDnFMT_DIV(2); |
| case 32000: |
| return SDnFMT_DIV(3) | SDnFMT_MULT(2); |
| case 44100: |
| return SDnFMT_BASE(1); |
| case 48000: |
| return 0; |
| case 88200: |
| return SDnFMT_BASE(1) | SDnFMT_MULT(2); |
| case 96000: |
| return SDnFMT_MULT(2); |
| case 176400: |
| return SDnFMT_BASE(1) | SDnFMT_MULT(4); |
| case 192000: |
| return SDnFMT_MULT(4); |
| default: |
| dev_warn(sdev->dev, "can't find div rate %d using 48kHz\n", |
| rate); |
| return 0; /* use 48KHz if not found */ |
| } |
| }; |
| |
| u32 hda_dsp_get_bits(struct snd_sof_dev *sdev, int sample_bits) |
| { |
| switch (sample_bits) { |
| case 8: |
| return SDnFMT_BITS(0); |
| case 16: |
| return SDnFMT_BITS(1); |
| case 20: |
| return SDnFMT_BITS(2); |
| case 24: |
| return SDnFMT_BITS(3); |
| case 32: |
| return SDnFMT_BITS(4); |
| default: |
| dev_warn(sdev->dev, "can't find %d bits using 16bit\n", |
| sample_bits); |
| return SDnFMT_BITS(1); /* use 16bits format if not found */ |
| } |
| }; |
| |
| int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev, |
| struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct sof_ipc_stream_params *ipc_params) |
| { |
| struct hdac_stream *hstream = substream->runtime->private_data; |
| struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream); |
| struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; |
| struct snd_dma_buffer *dmab; |
| struct sof_ipc_fw_version *v = &sdev->fw_ready.version; |
| int ret; |
| u32 size, rate, bits; |
| |
| size = params_buffer_bytes(params); |
| rate = hda_dsp_get_mult_div(sdev, params_rate(params)); |
| bits = hda_dsp_get_bits(sdev, params_width(params)); |
| |
| hstream->substream = substream; |
| |
| dmab = substream->runtime->dma_buffer_p; |
| |
| hstream->format_val = rate | bits | (params_channels(params) - 1); |
| hstream->bufsize = size; |
| hstream->period_bytes = params_period_bytes(params); |
| hstream->no_period_wakeup = |
| (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) && |
| (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP); |
| |
| ret = hda_dsp_stream_hw_params(sdev, stream, dmab, params); |
| if (ret < 0) { |
| dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret); |
| return ret; |
| } |
| |
| /* disable SPIB, to enable buffer wrap for stream */ |
| hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0); |
| |
| /* update no_stream_position flag for ipc params */ |
| if (hda && hda->no_ipc_position) { |
| /* For older ABIs set host_period_bytes to zero to inform |
| * FW we don't want position updates. Newer versions use |
| * no_stream_position for this purpose. |
| */ |
| if (v->abi_version < SOF_ABI_VER(3, 10, 0)) |
| ipc_params->host_period_bytes = 0; |
| else |
| ipc_params->no_stream_position = 1; |
| } |
| |
| ipc_params->stream_tag = hstream->stream_tag; |
| |
| return 0; |
| } |
| |
| int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev, |
| struct snd_pcm_substream *substream, int cmd) |
| { |
| struct hdac_stream *hstream = substream->runtime->private_data; |
| struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream); |
| |
| return hda_dsp_stream_trigger(sdev, stream, cmd); |
| } |
| |
| snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev, |
| struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_component *scomp = sdev->component; |
| struct hdac_stream *hstream = substream->runtime->private_data; |
| struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; |
| struct snd_sof_pcm *spcm; |
| snd_pcm_uframes_t pos; |
| |
| spcm = snd_sof_find_spcm_dai(scomp, rtd); |
| if (!spcm) { |
| dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n", |
| rtd->dai_link->id); |
| return 0; |
| } |
| |
| if (hda && !hda->no_ipc_position) { |
| /* read position from IPC position */ |
| pos = spcm->stream[substream->stream].posn.host_posn; |
| goto found; |
| } |
| |
| /* |
| * DPIB/posbuf position mode: |
| * For Playback, Use DPIB register from HDA space which |
| * reflects the actual data transferred. |
| * For Capture, Use the position buffer for pointer, as DPIB |
| * is not accurate enough, its update may be completed |
| * earlier than the data written to DDR. |
| */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| pos = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, |
| AZX_REG_VS_SDXDPIB_XBASE + |
| (AZX_REG_VS_SDXDPIB_XINTERVAL * |
| hstream->index)); |
| } else { |
| /* |
| * For capture stream, we need more workaround to fix the |
| * position incorrect issue: |
| * |
| * 1. Wait at least 20us before reading position buffer after |
| * the interrupt generated(IOC), to make sure position update |
| * happens on frame boundary i.e. 20.833uSec for 48KHz. |
| * 2. Perform a dummy Read to DPIB register to flush DMA |
| * position value. |
| * 3. Read the DMA Position from posbuf. Now the readback |
| * value should be >= period boundary. |
| */ |
| usleep_range(20, 21); |
| snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, |
| AZX_REG_VS_SDXDPIB_XBASE + |
| (AZX_REG_VS_SDXDPIB_XINTERVAL * |
| hstream->index)); |
| pos = snd_hdac_stream_get_pos_posbuf(hstream); |
| } |
| |
| if (pos >= hstream->bufsize) |
| pos = 0; |
| |
| found: |
| pos = bytes_to_frames(substream->runtime, pos); |
| |
| dev_vdbg(sdev->dev, "PCM: stream %d dir %d position %lu\n", |
| hstream->index, substream->stream, pos); |
| return pos; |
| } |
| |
| int hda_dsp_pcm_open(struct snd_sof_dev *sdev, |
| struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| struct snd_soc_component *scomp = sdev->component; |
| struct hdac_ext_stream *dsp_stream; |
| struct snd_sof_pcm *spcm; |
| int direction = substream->stream; |
| u32 flags = 0; |
| |
| spcm = snd_sof_find_spcm_dai(scomp, rtd); |
| if (!spcm) { |
| dev_err(sdev->dev, "error: can't find PCM with DAI ID %d\n", rtd->dai_link->id); |
| return -EINVAL; |
| } |
| |
| /* |
| * All playback streams are DMI L1 capable, capture streams need |
| * pause push/release to be disabled |
| */ |
| if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE) |
| runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE; |
| |
| if (hda_always_enable_dmi_l1 || |
| spcm->stream[substream->stream].d0i3_compatible) |
| flags |= SOF_HDA_STREAM_DMI_L1_COMPATIBLE; |
| |
| dsp_stream = hda_dsp_stream_get(sdev, direction, flags); |
| if (!dsp_stream) { |
| dev_err(sdev->dev, "error: no stream available\n"); |
| return -ENODEV; |
| } |
| |
| /* minimum as per HDA spec */ |
| snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); |
| |
| /* avoid circular buffer wrap in middle of period */ |
| snd_pcm_hw_constraint_integer(substream->runtime, |
| SNDRV_PCM_HW_PARAM_PERIODS); |
| |
| /* binding pcm substream to hda stream */ |
| substream->runtime->private_data = &dsp_stream->hstream; |
| return 0; |
| } |
| |
| int hda_dsp_pcm_close(struct snd_sof_dev *sdev, |
| struct snd_pcm_substream *substream) |
| { |
| struct hdac_stream *hstream = substream->runtime->private_data; |
| int direction = substream->stream; |
| int ret; |
| |
| ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag); |
| |
| if (ret) { |
| dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name); |
| return -ENODEV; |
| } |
| |
| /* unbinding pcm substream to hda stream */ |
| substream->runtime->private_data = NULL; |
| return 0; |
| } |