parisc: Hide Diva-built-in serial aux and graphics card

Diva GSP card has built-in serial AUX port and ATI graphic card which simply
don't work and which both don't have external connectors.  User Guides even
mention that those devices shouldn't be used.
So, prevent that Linux drivers try to enable those devices.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v3.0+

diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index a25fed52f7e94de4bd3dd5cb8b0922e1df8e81bf..41b740aed3a346e4bbc610959281649447f83bd4 100644 (file)
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -1692,3 +1692,36 @@ void lba_set_iregs(struct parisc_device *lba, u32 ibase, u32 imask)
        iounmap(base_addr);
 }
 
+
+/*
+ * The design of the Diva management card in rp34x0 machines (rp3410, rp3440)
+ * seems rushed, so that many built-in components simply don't work.
+ * The following quirks disable the serial AUX port and the built-in ATI RV100
+ * Radeon 7000 graphics card which both don't have any external connectors and
+ * thus are useless, and even worse, e.g. the AUX port occupies ttyS0 and as
+ * such makes those machines the only PARISC machines on which we can't use
+ * ttyS0 as boot console.
+ */
+static void quirk_diva_ati_card(struct pci_dev *dev)
+{
+       if (dev->subsystem_vendor != PCI_VENDOR_ID_HP ||
+           dev->subsystem_device != 0x1292)
+               return;
+
+       dev_info(&dev->dev, "Hiding Diva built-in ATI card");
+       dev->device = 0;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QY,
+       quirk_diva_ati_card);
+
+static void quirk_diva_aux_disable(struct pci_dev *dev)
+{
+       if (dev->subsystem_vendor != PCI_VENDOR_ID_HP ||
+           dev->subsystem_device != 0x1291)
+               return;
+
+       dev_info(&dev->dev, "Hiding Diva built-in AUX serial device");
+       dev->device = 0;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA_AUX,
+       quirk_diva_aux_disable);