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, 24 insertions, 20 deletions

diff --git a/sound/pci/oxygen/oxygen.c b/sound/pci/oxygen/oxygen.c
index 12b6c2137d50..f2c37f379d39 100644
--- a/sound/pci/oxygen/oxygen.c
+++ b/sound/pci/oxygen/oxygen.c
@@ -293,29 +293,10 @@ static void set_ak5385_params(struct oxygen *chip,
 
 static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
 
-static int generic_probe(struct oxygen *chip, unsigned long driver_data)
-{
-        if (driver_data == MODEL_MERIDIAN) {
-                chip->model.init = meridian_init;
-                chip->model.resume = meridian_resume;
-                chip->model.set_adc_params = set_ak5385_params;
-                chip->model.device_config = PLAYBACK_0_TO_I2S |
-                                            PLAYBACK_1_TO_SPDIF |
-                                            CAPTURE_0_FROM_I2S_2 |
-                                            CAPTURE_1_FROM_SPDIF;
-        }
-        if (driver_data == MODEL_MERIDIAN || driver_data == MODEL_HALO) {
-                chip->model.misc_flags = OXYGEN_MISC_MIDI;
-                chip->model.device_config |= MIDI_OUTPUT | MIDI_INPUT;
-        }
-        return 0;
-}
-
 static const struct oxygen_model model_generic = {
         .shortname = "C-Media CMI8788",
         .longname = "C-Media Oxygen HD Audio",
         .chip = "CMI8788",
-        .probe = generic_probe,
         .init = generic_init,
         .cleanup = generic_cleanup,
         .resume = generic_resume,
@@ -340,6 +321,29 @@ static const struct oxygen_model model_generic = {
         .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 };
 
+static int __devinit get_oxygen_model(struct oxygen *chip,
+                                      const struct pci_device_id *id)
+{
+        chip->model = model_generic;
+        switch (id->driver_data) {
+        case MODEL_MERIDIAN:
+                chip->model.init = meridian_init;
+                chip->model.resume = meridian_resume;
+                chip->model.set_adc_params = set_ak5385_params;
+                chip->model.device_config = PLAYBACK_0_TO_I2S |
+                                            PLAYBACK_1_TO_SPDIF |
+                                            CAPTURE_0_FROM_I2S_2 |
+                                            CAPTURE_1_FROM_SPDIF;
+                break;
+        }
+        if (id->driver_data == MODEL_MERIDIAN ||
+            id->driver_data == MODEL_HALO) {
+                chip->model.misc_flags = OXYGEN_MISC_MIDI;
+                chip->model.device_config |= MIDI_OUTPUT | MIDI_INPUT;
+        }
+        return 0;
+}
+
 static int __devinit generic_oxygen_probe(struct pci_dev *pci,
                                           const struct pci_device_id *pci_id)
 {
@@ -353,7 +357,7 @@ static int __devinit generic_oxygen_probe(struct pci_dev *pci,
                 return -ENOENT;
         }
         err = oxygen_pci_probe(pci, index[dev], id[dev], THIS_MODULE,
-                               &model_generic, pci_id->driver_data);
+                               oxygen_ids, get_oxygen_model);
         if (err >= 0)
                 ++dev;
         return err;