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ASoC: SOF: Intel: mtl: add get_stream_position support

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Get HDaudio link position for current stream delay calculation
from hda registers.

Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230202132954.26773-9-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Rander Wang 2023-02-02 15:29:53 +02:00 committed by Mark Brown
parent 7f95629727
commit faceb3445a
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
2 changed files with 20 additions and 0 deletions
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14
sound/soc/sof/intel/mtl.c
View file

@ -581,6 +581,18 @@ static int mtl_dsp_disable_interrupts(struct snd_sof_dev *sdev)
return mtl_enable_interrupts(sdev, false);
}
static u64 mtl_dsp_get_stream_hda_link_position(struct snd_sof_dev *sdev,
struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct hdac_stream *hstream = substream->runtime->private_data;
u32 llp_l, llp_u;
llp_l = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, MTL_PPLCLLPL(hstream->index));
llp_u = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, MTL_PPLCLLPU(hstream->index));
return ((u64)llp_u << 32) | llp_l;
}
/* Meteorlake ops */
struct snd_sof_dsp_ops sof_mtl_ops;
EXPORT_SYMBOL_NS(sof_mtl_ops, SND_SOC_SOF_INTEL_HDA_COMMON);
@ -619,6 +631,8 @@ int sof_mtl_ops_init(struct snd_sof_dev *sdev)
/* dsp core get/put */
/* TODO: add core_get and core_put */
sof_mtl_ops.get_stream_position = mtl_dsp_get_stream_hda_link_position;
sdev->private = devm_kzalloc(sdev->dev, sizeof(struct sof_ipc4_fw_data), GFP_KERNEL);
if (!sdev->private)
return -ENOMEM;

6
sound/soc/sof/intel/mtl.h
View file

@ -6,6 +6,12 @@
* Copyright(c) 2020-2022 Intel Corporation. All rights reserved.
*/
/* HDA Registers */
#define MTL_PPLCLLPL_BASE 0x948
#define MTL_PPLCLLPU_STRIDE 0x10
#define MTL_PPLCLLPL(x) (MTL_PPLCLLPL_BASE + (x) * MTL_PPLCLLPU_STRIDE)
#define MTL_PPLCLLPU(x) (MTL_PPLCLLPL_BASE + 0x4 + (x) * MTL_PPLCLLPU_STRIDE)
/* DSP Registers */
#define MTL_HFDSSCS 0x1000
#define MTL_HFDSSCS_SPA_MASK BIT(16)