[PATCH v2 3/3] ASoC: fsl: imx-rpmsg: Switch to core ignore-suspend-widgets support

[Chancel Liu <chancel.liu@nxp.com>]

The imx-rpmsg machine driver currently implements its own logic to
parse ignore-suspend-widgets from Device Tree and manually traverse
DAPM widgets to mark them as ignore_suspend.

It also has a potential issue that some widgets listed in the property
(e.g. "Headphone Jack") belong to card or CPU DAI DAPM context.

Switch to use snd_soc_of_parse_ignore_suspend_widgets() with the
introduction of a generic ignore-suspend-widgets mechanism in the ASoC
core.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
 sound/soc/fsl/imx-rpmsg.c | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c
index 40e0043cfe15..15b0733f1524 100644
--- a/sound/soc/fsl/imx-rpmsg.c
+++ b/sound/soc/fsl/imx-rpmsg.c
@@ -87,7 +87,6 @@ static int imx_rpmsg_late_probe(struct snd_soc_card *card)
 	int ret;
 
 	if (data->lpa) {
-		struct snd_soc_component *codec_comp;
 		struct device_node *codec_np;
 		struct device_driver *codec_drv;
 		struct device *codec_dev = NULL;
@@ -107,22 +106,6 @@ static int imx_rpmsg_late_probe(struct snd_soc_card *card)
 			}
 		}
 		if (codec_dev) {
-			codec_comp = snd_soc_lookup_component_nolocked(codec_dev, NULL);
-			if (codec_comp) {
-				int i, num_widgets;
-				const char *widgets;
-				struct snd_soc_dapm_context *dapm;
-
-				num_widgets = of_property_count_strings(data->card.dev->of_node,
-									"ignore-suspend-widgets");
-				for (i = 0; i < num_widgets; i++) {
-					of_property_read_string_index(data->card.dev->of_node,
-								      "ignore-suspend-widgets",
-								      i, &widgets);
-					dapm = snd_soc_component_to_dapm(codec_comp);
-					snd_soc_dapm_ignore_suspend(dapm, widgets);
-				}
-			}
 			codec_drv = codec_dev->driver;
 			if (codec_drv->pm) {
 				memcpy(&lpa_pm, codec_drv->pm, sizeof(lpa_pm));
@@ -274,6 +257,15 @@ static int imx_rpmsg_probe(struct platform_device *pdev)
 		}
 	}
 
+	if (data->lpa && of_property_present(np, "ignore-suspend-widgets")) {
+		ret = snd_soc_of_parse_ignore_suspend_widgets(&data->card,
+							      "ignore-suspend-widgets");
+		if (ret) {
+			dev_err(&pdev->dev, "failed to parse ignore-suspend-widgets: %d\n", ret);
+			return ret;
+		}
+	}
+
 	platform_set_drvdata(pdev, &data->card);
 	snd_soc_card_set_drvdata(&data->card, data);
 	ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
-- 
2.50.1