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| author | Daniel Baluta <daniel.baluta@nxp.com> | 2019-12-04 15:15:53 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-12-09 18:39:35 +0000 |
| commit | 285880a23d105e5d34b311b0c44061dffb07e405 (patch) | |
| tree | 086e6f66bde82028caf102e86cce299bb16c9f5c /sound/soc/sof/sof-priv.h | |
| parent | 80acdd4f8ff763183dc1cd7f1cd31db9eaaecdc8 (diff) | |
| download | lwn-285880a23d105e5d34b311b0c44061dffb07e405.tar.gz lwn-285880a23d105e5d34b311b0c44061dffb07e405.zip | |
ASoC: SOF: Make creation of machine device from SOF core optional
Currently, SOF probes machine drivers by creating a platform device
and passing the machine description as private data.
This is driven by the ACPI restrictions. Ideally, ACPI tables
should contain the description for the machine driver. This is
not possible because ACPI tables are frozen and used on multiple
OS-es (e.g Windows).
In the case of Device Tree we don't have this restriction, so we
choose to probe the machine drivers by creating a DT node as is
the standard ALSA way.
This patch makes the probing of machine drivers from SOF
core optional allowing for Device Tree platforms to decouple
the SOF core from machine driver probing.
Along with this, it also consolidates the machine driver selection
for Intel platforms by defining optional ops for selecting the machine
driver based on the ACPI match for HDA and non-HDA platforms and
setting the mach params.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191204211556.12671-11-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/sof-priv.h')
| -rw-r--r-- | sound/soc/sof/sof-priv.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index eae1fc209a65..54dd6d4b4c12 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -202,6 +202,15 @@ struct snd_sof_dsp_ops { int (*get_window_offset)(struct snd_sof_dev *sdev, u32 id);/* mandatory for common loader code */ + /* machine driver ops */ + int (*machine_register)(struct snd_sof_dev *sdev, + void *pdata); /* optional */ + void (*machine_unregister)(struct snd_sof_dev *sdev, + void *pdata); /* optional */ + void (*machine_select)(struct snd_sof_dev *sdev); /* optional */ + void (*set_mach_params)(const struct snd_soc_acpi_mach *mach, + struct device *dev); /* optional */ + /* DAI ops */ struct snd_soc_dai_driver *drv; int num_drv; @@ -511,4 +520,6 @@ int intel_pcm_open(struct snd_sof_dev *sdev, int intel_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream); +int sof_machine_check(struct snd_sof_dev *sdev); + #endif |