drm/nouveau/drm: store full dcb gpio function data in connector

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -111,8 +111,8 @@ nouveau_connector_destroy(struct drm_connector *connector)
 	drm  = nouveau_drm(dev);
 	gpio = nouveau_gpio(drm->device);
 
-	if (gpio && nv_connector->hpd != DCB_GPIO_UNUSED) {
-		gpio->isr_del(gpio, 0, nv_connector->hpd, 0xff,
+	if (gpio && nv_connector->hpd.func != DCB_GPIO_UNUSED) {
+		gpio->isr_del(gpio, 0, nv_connector->hpd.func, 0xff,
 			      nouveau_connector_hotplug, connector);
 	}
 
@@ -976,8 +976,10 @@ nouveau_connector_create(struct drm_device *dev, int index)
 		if (olddcb_conntab(dev)[3] >= 4)
 			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
 
-		nv_connector->hpd = ffs((entry & 0x07033000) >> 12);
-		nv_connector->hpd = hpd[nv_connector->hpd];
+		ret = gpio->find(gpio, 0, hpd[ffs((entry & 0x07033000) >> 12)],
+				 DCB_GPIO_UNUSED, &nv_connector->hpd);
+		if (ret)
+			nv_connector->hpd.func = DCB_GPIO_UNUSED;
 
 		nv_connector->type = nv_connector->dcb[0];
 		if (drm_conntype_from_dcb(nv_connector->type) ==
@@ -1000,7 +1002,7 @@ nouveau_connector_create(struct drm_device *dev, int index)
 		}
 	} else {
 		nv_connector->type = DCB_CONNECTOR_NONE;
-		nv_connector->hpd = DCB_GPIO_UNUSED;
+		nv_connector->hpd.func = DCB_GPIO_UNUSED;
 	}
 
 	/* no vbios data, or an unknown dcb connector type - attempt to
@@ -1127,8 +1129,8 @@ nouveau_connector_create(struct drm_device *dev, int index)
 	}
 
 	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
-	if (gpio && nv_connector->hpd != DCB_GPIO_UNUSED) {
-		ret = gpio->isr_add(gpio, 0, nv_connector->hpd, 0xff,
+	if (gpio && nv_connector->hpd.func != DCB_GPIO_UNUSED) {
+		ret = gpio->isr_add(gpio, 0, nv_connector->hpd.func, 0xff,
 				    nouveau_connector_hotplug, connector);
 		if (ret == 0)
 			connector->polled = DRM_CONNECTOR_POLL_HPD;

drivers/gpu/drm/nouveau/nouveau_connector.h

@@ -30,6 +30,9 @@
 #include <drm/drm_edid.h>
 #include "nouveau_crtc.h"
 
+#include <subdev/bios.h>
+#include <subdev/bios/gpio.h>
+
 struct nouveau_i2c_port;
 
 enum nouveau_underscan_type {
@@ -59,9 +62,9 @@ enum nouveau_dithering_depth {
 struct nouveau_connector {
 	struct drm_connector base;
 	enum dcb_connector_type type;
+	struct dcb_gpio_func hpd;
 	u8 index;
 	u8 *dcb;
-	u8 hpd;
 
 	int dithering_mode;
 	int dithering_depth;

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -234,7 +234,7 @@ nouveau_display_init(struct drm_device *dev)
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		struct nouveau_connector *conn = nouveau_connector(connector);
 		if (gpio)
-			gpio->irq(gpio, 0, conn->hpd, 0xff, true);
+			gpio->irq(gpio, 0, conn->hpd.func, 0xff, true);
 	}
 
 	return ret;
@@ -252,7 +252,7 @@ nouveau_display_fini(struct drm_device *dev)
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		struct nouveau_connector *conn = nouveau_connector(connector);
 		if (gpio)
-			gpio->irq(gpio, 0, conn->hpd, 0xff, false);
+			gpio->irq(gpio, 0, conn->hpd.func, 0xff, false);
 	}
 
 	drm_kms_helper_poll_disable(dev);

drivers/gpu/drm/nouveau/nouveau_dp.c

@@ -260,7 +260,7 @@ nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate,
 	 * we take during link training (DP_SET_POWER is one), we need
 	 * to ignore them for the moment to avoid races.
 	 */
-	gpio->irq(gpio, 0, nv_connector->hpd, 0xff, false);
+	gpio->irq(gpio, 0, nv_connector->hpd.func, 0xff, false);
 
 	/* enable down-spreading and execute pre-train script from vbios */
 	dp_link_train_init(dev, &dp, nv_encoder->dp.dpcd[3] & 1);
@@ -300,7 +300,7 @@ nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate,
 	dp_link_train_fini(dev, &dp);
 
 	/* re-enable hotplug detect */
-	gpio->irq(gpio, 0, nv_connector->hpd, 0xff, true);
+	gpio->irq(gpio, 0, nv_connector->hpd.func, 0xff, true);
 	return true;
 }