From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
---
Changes in v4:
- collected tags
Changes in v3:
- s/sh/renesas in patch title
Changes in v2:
- none
sound/soc/renesas/rz-ssi.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff --git a/sound/soc/renesas/rz-ssi.c b/sound/soc/renesas/rz-ssi.c
index eebf2d647ef2..34c2e22b5a67 100644
--- a/sound/soc/renesas/rz-ssi.c
+++ b/sound/soc/renesas/rz-ssi.c
@@ -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,
--
2.39.2
