vga_switcheroo: add reprobe hook for fbcon to recheck connected outputs.

This adds a hook after the mux is switched for the driver to reprobe
the connected outputs.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index 463691a1650e..2b8e1d25e8d0 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -33,6 +33,7 @@ struct vga_switcheroo_client {
         struct fb_info *fb_info;
         int pwr_state;
         void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state);
+        void (*reprobe)(struct pci_dev *pdev);
         bool (*can_switch)(struct pci_dev *pdev);
         int id;
         bool active;
@@ -103,6 +104,7 @@ static void vga_switcheroo_enable(void)
 
 int vga_switcheroo_register_client(struct pci_dev *pdev,
                                    void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state),
+                                   void (*reprobe)(struct pci_dev *pdev),
                                    bool (*can_switch)(struct pci_dev *pdev))
 {
         int index;
@@ -117,6 +119,7 @@ int vga_switcheroo_register_client(struct pci_dev *pdev,
         vgasr_priv.clients[index].pwr_state = VGA_SWITCHEROO_ON;
         vgasr_priv.clients[index].pdev = pdev;
         vgasr_priv.clients[index].set_gpu_state = set_gpu_state;
+        vgasr_priv.clients[index].reprobe = reprobe;
         vgasr_priv.clients[index].can_switch = can_switch;
         vgasr_priv.clients[index].id = -1;
         if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
@@ -251,6 +254,9 @@ static int vga_switchto(struct vga_switcheroo_client *new_client)
         if (ret)
                 return ret;
 
+        if (new_client->reprobe)
+                new_client->reprobe(new_client->pdev);
+
         if (active->pwr_state == VGA_SWITCHEROO_ON)
                 vga_switchoff(active);