sound: oxygen: handle cards with broken EEPROM

Under as yet unknown circumstances, the first word of the sound card's
EEPROM gets overwritten.  When this has happened, we cannot rely on the
subsystem IDs that the kernel reads from the PCI configuration
registers.  Instead, we read the IDs directly from the EEPROM and do the
ID matching manually.

Because the model-specific driver cannot determine the model before
calling oxygen_pci_probe(), that function now gets a get_model()
callback as parameter.  The customizing of the model structure, which
was formerly done by the probe() callback, also has moved into
get_model().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 10 insertions, 1 deletions

diff --git a/sound/pci/oxygen/hifier.c b/sound/pci/oxygen/hifier.c
index cc98bad9916a..84ef13183419 100644
--- a/sound/pci/oxygen/hifier.c
+++ b/sound/pci/oxygen/hifier.c
@@ -45,6 +45,7 @@ MODULE_PARM_DESC(enable, "enable card");
 static struct pci_device_id hifier_ids[] __devinitdata = {
         { OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
         { OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
+        { OXYGEN_PCI_SUBID_BROKEN_EEPROM },
         { }
 };
 MODULE_DEVICE_TABLE(pci, hifier_ids);
@@ -172,6 +173,13 @@ static const struct oxygen_model model_hifier = {
         .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 };
 
+static int __devinit get_hifier_model(struct oxygen *chip,
+                                      const struct pci_device_id *id)
+{
+        chip->model = model_hifier;
+        return 0;
+}
+
 static int __devinit hifier_probe(struct pci_dev *pci,
                                   const struct pci_device_id *pci_id)
 {
@@ -184,7 +192,8 @@ static int __devinit hifier_probe(struct pci_dev *pci,
                 ++dev;
                 return -ENOENT;
         }
-        err = oxygen_pci_probe(pci, index[dev], id[dev], THIS_MODULE, &model_hifier, 0);
+        err = oxygen_pci_probe(pci, index[dev], id[dev], THIS_MODULE,
+                               hifier_ids, get_hifier_model);
         if (err >= 0)
                 ++dev;
         return err;