1 files changed, 13 insertions, 4 deletions

diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index 98c6a8c65d81..e9e829e83d7a 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -26,7 +26,7 @@
  * SPI 0 -> 1st PCM1796 (front)
  * SPI 1 -> 2nd PCM1796 (surround)
  * SPI 2 -> 3rd PCM1796 (center/LFE)
- * SPI 4 -> 4th PCM1796 (back)
+ * SPI 4 -> 4th PCM1796 (back) and EEPROM self-destruct (do not use!)
  *
  * GPIO 2 -> M0 of CS5381
  * GPIO 3 -> M1 of CS5381
@@ -207,6 +207,12 @@ static void xonar_gpio_changed(struct oxygen *chip);
 static inline void pcm1796_write_spi(struct oxygen *chip, unsigned int codec,
                                      u8 reg, u8 value)
 {
+        /*
+         * We don't want to do writes on SPI 4 because the EEPROM, which shares
+         * the same pin, might get confused and broken.  We'd better take care
+         * that the driver works with the default register values ...
+         */
+#if 0
         /* maps ALSA channel pair number to SPI output */
         static const u8 codec_map[4] = {
                 0, 1, 2, 4
@@ -217,6 +223,7 @@ static inline void pcm1796_write_spi(struct oxygen *chip, unsigned int codec,
                          (codec_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
                          OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
                          (reg << 8) | value);
+#endif
 }
 
 static inline void pcm1796_write_i2c(struct oxygen *chip, unsigned int codec,
@@ -750,6 +757,9 @@ static const DECLARE_TLV_DB_SCALE(cs4362a_db_scale, -12700, 100, 0);
 
 static int xonar_d2_control_filter(struct snd_kcontrol_new *template)
 {
+        if (!strncmp(template->name, "Master Playback ", 16))
+                /* disable volume/mute because they would require SPI writes */
+                return 1;
         if (!strncmp(template->name, "CD Capture ", 11))
                 /* CD in is actually connected to the video in pin */
                 template->private_value ^= AC97_CD ^ AC97_VIDEO;
@@ -840,9 +850,8 @@ static const struct oxygen_model model_xonar_d2 = {
         .dac_volume_min = 0x0f,
         .dac_volume_max = 0xff,
         .misc_flags = OXYGEN_MISC_MIDI,
-        .function_flags = OXYGEN_FUNCTION_SPI |
-                          OXYGEN_FUNCTION_ENABLE_SPI_4_5,
-        .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
+        .function_flags = OXYGEN_FUNCTION_SPI,
+        .dac_i2s_format = OXYGEN_I2S_FORMAT_I2S,
         .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 };