Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-01 10:42:11 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ASoC: renesas: rz-ssi: Add runtime PM support

Browse Source 
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: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20241210170953.2936724-16-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Claudiu Beznea 2024-12-10 19:09:44 +02:00 committed by Mark Brown
parent cf3a79e4f8
commit 3888672495
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 21 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sound/soc/renesas/rz-ssi.c
View File

@ -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,