Unverified Commit ddcccd54 authored by Ranjani Sridharan's avatar Ranjani Sridharan Committed by Mark Brown
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ASoC: SOF: Intel: byt: Add PM callbacks 



Add the PM callbacks for BYT/CHT platforms.

Signed-off-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Tested-by: default avatarEnric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20200526203640.25980-2-pierre-louis.bossart@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0d71a5cf

sound/soc/sof/intel/byt.c

+36 −0
Original line number Diff line number Diff line
@@ -428,6 +428,34 @@ static void byt_set_mach_params(const struct snd_soc_acpi_mach *mach, 
	mach_params->platform = dev_name(dev);

}



static void byt_reset_dsp_disable_int(struct snd_sof_dev *sdev)

{

	/* Disable Interrupt from both sides */

	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX, 0x3, 0x3);

	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRD, 0x3, 0x3);



	/* Put DSP into reset, set reset vector */

	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_CSR,

				  SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL,

				  SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL);

}



static int byt_suspend(struct snd_sof_dev *sdev, u32 target_state)

{

	byt_reset_dsp_disable_int(sdev);



	return 0;

}



static int byt_resume(struct snd_sof_dev *sdev)

{

	/* Enable Interrupt from both sides */

	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX, 0x3, 0x0);

	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRD, 0x3, 0x0);



	return 0;

}



/* Baytrail DAIs */

static struct snd_soc_dai_driver byt_dai[] = {

{
@@ -832,6 +860,10 @@ const struct snd_sof_dsp_ops sof_byt_ops = { 
	/*Firmware loading */

	.load_firmware	= snd_sof_load_firmware_memcpy,



	/* PM */

	.suspend = byt_suspend,

	.resume = byt_resume,



	/* DAI drivers */

	.drv = byt_dai,

	.num_drv = 3, /* we have only 3 SSPs on byt*/
@@ -906,6 +938,10 @@ const struct snd_sof_dsp_ops sof_cht_ops = { 
	/*Firmware loading */

	.load_firmware	= snd_sof_load_firmware_memcpy,



	/* PM */

	.suspend = byt_suspend,

	.resume = byt_resume,



	/* DAI drivers */

	.drv = byt_dai,

	/* all 6 SSPs may be available for cherrytrail */