[PATCH v1] ASoC: codecs: wcd937x: Add conditional regulator control for wcd937x

[karthik.s]

Add has_always_on_supplies for managing regulators. Indicates that
the codec supply regulators are always enabled by the system and
must not be requested or enabled by the codec driver.

Signed-off-by: karthik.s <karthik.s@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/sound/qcom,wcd937x.yaml     |  6 ++++++
 sound/soc/codecs/wcd937x.c                          | 13 +++++++++----
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
index f94203798f24..d89fff1f7171 100644
--- a/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
@@ -28,6 +28,12 @@ properties:
   vdd-px-supply:
     description: A reference to the 1.8V I/O supply
 
+  qcom,always-on-supply:
+    type: boolean
+    description: Indicates that the codec supply regulators are always enabled
+                 by the system and must not be requested or enabled by the codec
+                 driver.
+
 required:
   - compatible
   - vdd-px-supply
diff --git a/sound/soc/codecs/wcd937x.c b/sound/soc/codecs/wcd937x.c
index 10a2d598caa7..1514ceb7d790 100644
--- a/sound/soc/codecs/wcd937x.c
+++ b/sound/soc/codecs/wcd937x.c
@@ -100,6 +100,7 @@ struct wcd937x_priv {
 	int aux_pdm_wd_int;
 	bool comp1_enable;
 	bool comp2_enable;
+	bool has_always_on_supplies;
 
 	struct gpio_desc *us_euro_gpio;
 	struct gpio_desc *reset_gpio;
@@ -2907,10 +2908,14 @@ static int wcd937x_probe(struct platform_device *pdev)
 	cfg = &wcd937x->mbhc_cfg;
 	cfg->swap_gnd_mic = wcd937x_swap_gnd_mic;
 
-	ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(wcd937x_supplies),
-					     wcd937x_supplies);
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to get and enable supplies\n");
+	wcd937x->has_always_on_supplies = of_property_read_bool(dev->of_node,
+							"qcom,always-on-supply");
+	if (!wcd937x->has_always_on_supplies) {
+		ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(wcd937x_supplies),
+						wcd937x_supplies);
+		if (ret)
+			return dev_err_probe(dev, ret, "Failed to get and enable supplies\n");
+	}
 
 	ret = wcd_dt_parse_micbias_info(&wcd937x->common);
 	if (ret)
-- 
2.34.1