video: driver: check for regulator support before initializing

Upstream doesn't support regulators, while downstream kernel does.
So add a condition to check for regulator support before init.

Change-Id: Icab8aec20796546a33ac571963f871d146970002
Signed-off-by: Dikshita Agarwal <[email protected]>

driver/platform/common/inc/msm_vidc_platform.h

@@ -229,6 +229,11 @@ static inline bool is_mmrm_supported(struct msm_vidc_core *core)
 	return !!core->platform->data.supports_mmrm;
 }
 
+static inline bool is_regulator_supported(struct msm_vidc_core *core)
+{
+	return !!core->platform->data.regulator_tbl_size;
+}
+
 int msm_vidc_init_platform(struct platform_device *pdev);
 int msm_vidc_deinit_platform(struct platform_device *pdev);
 

driver/vidc/src/resources.c

@@ -234,6 +234,12 @@ static int __init_regulators(struct msm_vidc_core *core)
 	}
 	regulators = &core->resource->regulator_set;
 
+	/* skip init if regulators not supported */
+	if (!is_regulator_supported(core)) {
+		d_vpr_h("%s: regulators are not available in database\n", __func__);
+		return 0;
+	}
+
 	regulator_tbl = core->platform->data.regulator_tbl;
 	regulator_count = core->platform->data.regulator_tbl_size;