disp: msm: dsi: Set the panel test gpio to input

This GPIO is a input signal, so need to set it
to input mode, or it will lead leakage in RBC.
This change is only to fix the power issue.

Change-Id: I87716f646c75dac2f1350a2ea55188829a4ccc9e
Signed-off-by: Yuan Zhao <[email protected]>

msm/dsi/dsi_panel.c

@@ -283,6 +283,16 @@ static int dsi_panel_gpio_request(struct dsi_panel *panel)
 		}
 	}
 
+	if (gpio_is_valid(panel->panel_test_gpio)) {
+		rc = gpio_request(panel->panel_test_gpio, "panel_test_gpio");
+		if (rc) {
+			pr_warn("request for panel_test_gpio failed, rc=%d\n",
+				 rc);
+			panel->panel_test_gpio = -1;
+			rc = 0;
+		}
+	}
+
 	goto error;
 error_release_mode_sel:
 	if (gpio_is_valid(panel->bl_config.en_gpio))
@@ -314,6 +324,9 @@ static int dsi_panel_gpio_release(struct dsi_panel *panel)
 	if (gpio_is_valid(panel->reset_config.lcd_mode_sel_gpio))
 		gpio_free(panel->reset_config.lcd_mode_sel_gpio);
 
+	if (gpio_is_valid(panel->panel_test_gpio))
+		gpio_free(panel->panel_test_gpio);
+
 	return rc;
 }
 
@@ -398,6 +411,14 @@ static int dsi_panel_reset(struct dsi_panel *panel)
 		if (rc)
 			pr_err("unable to set dir for mode gpio rc=%d\n", rc);
 	}
+
+	if (gpio_is_valid(panel->panel_test_gpio)) {
+		rc = gpio_direction_input(panel->panel_test_gpio);
+		if (rc)
+			pr_warn("unable to set dir for panel test gpio rc=%d\n",
+			       rc);
+	}
+
 exit:
 	return rc;
 }