Unverified Commit 163fa3a5 authored by YC Hung's avatar YC Hung Committed by Mark Brown
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ASoC: SOF: mediatek: Add DSP system PM callback for mt8195 



Add DSP system PM callback for suspend and resume

Signed-off-by: default avatarYC Hung <yc.hung@mediatek.com>
Reviewed-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: default avatarDaniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: default avatarDaniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20211118100749.54628-9-daniel.baluta@oss.nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 424d6d1a

sound/soc/sof/mediatek/mt8195/mt8195.c

+42 −0
Original line number Diff line number Diff line
@@ -311,6 +311,44 @@ static int mt8195_dsp_remove(struct snd_sof_dev *sdev) 
	return 0;

}



static int mt8195_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state)

{

	struct platform_device *pdev = container_of(sdev->dev, struct platform_device, dev);

	int ret;



	/* stall and reset dsp */

	sof_hifixdsp_shutdown(sdev);



	/* power down adsp sram */

	ret = adsp_sram_power_on(&pdev->dev, false);

	if (ret) {

		dev_err(sdev->dev, "adsp_sram_power_off fail!\n");

		return ret;

	}



	/* turn off adsp clock */

	return adsp_clock_off(sdev);

}



static int mt8195_dsp_resume(struct snd_sof_dev *sdev)

{

	int ret;



	/* turn on adsp clock */

	ret = adsp_clock_on(sdev);

	if (ret) {

		dev_err(sdev->dev, "adsp_clock_on fail!\n");

		return ret;

	}



	/* power on adsp sram */

	ret = adsp_sram_power_on(sdev->dev, true);

	if (ret)

		dev_err(sdev->dev, "adsp_sram_power_on fail!\n");



	return ret;

}



/* on mt8195 there is 1 to 1 match between type and BAR idx */

static int mt8195_get_bar_index(struct snd_sof_dev *sdev, u32 type)

{
@@ -382,6 +420,10 @@ const struct snd_sof_dsp_ops sof_mt8195_ops = { 
	.drv = mt8195_dai,

	.num_drv = ARRAY_SIZE(mt8195_dai),



	/* PM */

	.suspend	= mt8195_dsp_suspend,

	.resume		= mt8195_dsp_resume,



	/* ALSA HW info flags */

	.hw_info =	SNDRV_PCM_INFO_MMAP |

			SNDRV_PCM_INFO_MMAP_VALID |