Unverified Commit 38886724 authored by Claudiu Beznea's avatar Claudiu Beznea Committed by Mark Brown
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ASoC: renesas: rz-ssi: Add runtime PM support 



Add runtime PM support to the ssi driver. This assert/de-assert the
reset lines on runtime suspend/resume. Along with it the de-assertion of
the reset line from probe function was removed as it is not necessary
anymore.

Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20241210170953.2936724-16-claudiu.beznea.uj@bp.renesas.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent cf3a79e4

sound/soc/renesas/rz-ssi.c

+21 −5
Original line number Diff line number Diff line
@@ -1139,14 +1139,13 @@ static int rz_ssi_probe(struct platform_device *pdev) 
		goto err_release_dma_chs;

	}



	reset_control_deassert(ssi->rstc);

	/* Default 0 for power saving. Can be overridden via sysfs. */

	pm_runtime_set_autosuspend_delay(dev, 0);

	pm_runtime_use_autosuspend(dev);

	ret = devm_pm_runtime_enable(dev);

	if (ret < 0) {

		dev_err(dev, "Failed to enable runtime PM!\n");

		goto err_reset;

		goto err_release_dma_chs;

	}



	ret = devm_snd_soc_register_component(dev, &rz_ssi_soc_component,
@@ -1154,13 +1153,11 @@ static int rz_ssi_probe(struct platform_device *pdev) 
					      ARRAY_SIZE(rz_ssi_soc_dai));

	if (ret < 0) {

		dev_err(dev, "failed to register snd component\n");

		goto err_reset;

		goto err_release_dma_chs;

	}



	return 0;



err_reset:

	reset_control_assert(ssi->rstc);

err_release_dma_chs:

	rz_ssi_release_dma_channels(ssi);
@@ -1182,10 +1179,29 @@ static const struct of_device_id rz_ssi_of_match[] = { 
};

MODULE_DEVICE_TABLE(of, rz_ssi_of_match);



static int rz_ssi_runtime_suspend(struct device *dev)

{

	struct rz_ssi_priv *ssi = dev_get_drvdata(dev);



	return reset_control_assert(ssi->rstc);

}



static int rz_ssi_runtime_resume(struct device *dev)

{

	struct rz_ssi_priv *ssi = dev_get_drvdata(dev);



	return reset_control_deassert(ssi->rstc);

}



static const struct dev_pm_ops rz_ssi_pm_ops = {

	RUNTIME_PM_OPS(rz_ssi_runtime_suspend, rz_ssi_runtime_resume, NULL)

};



static struct platform_driver rz_ssi_driver = {

	.driver	= {

		.name	= "rz-ssi-pcm-audio",

		.of_match_table = rz_ssi_of_match,

		.pm = pm_ptr(&rz_ssi_pm_ops),

	},

	.probe		= rz_ssi_probe,

	.remove		= rz_ssi_remove,