1 files changed, 31 insertions, 0 deletions

diff --git a/sound/pci/oxygen/oxygen_io.c b/sound/pci/oxygen/oxygen_io.c
index 3126c4b403dd..c1eb923f2ac9 100644
--- a/sound/pci/oxygen/oxygen_io.c
+++ b/sound/pci/oxygen/oxygen_io.c
@@ -254,3 +254,34 @@ void oxygen_write_uart(struct oxygen *chip, u8 data)
         _write_uart(chip, 0, data);
 }
 EXPORT_SYMBOL(oxygen_write_uart);
+
+u16 oxygen_read_eeprom(struct oxygen *chip, unsigned int index)
+{
+        unsigned int timeout;
+
+        oxygen_write8(chip, OXYGEN_EEPROM_CONTROL,
+                      index | OXYGEN_EEPROM_DIR_READ);
+        for (timeout = 0; timeout < 100; ++timeout) {
+                udelay(1);
+                if (!(oxygen_read8(chip, OXYGEN_EEPROM_STATUS)
+                      & OXYGEN_EEPROM_BUSY))
+                        break;
+        }
+        return oxygen_read16(chip, OXYGEN_EEPROM_DATA);
+}
+
+void oxygen_write_eeprom(struct oxygen *chip, unsigned int index, u16 value)
+{
+        unsigned int timeout;
+
+        oxygen_write16(chip, OXYGEN_EEPROM_DATA, value);
+        oxygen_write8(chip, OXYGEN_EEPROM_CONTROL,
+                      index | OXYGEN_EEPROM_DIR_WRITE);
+        for (timeout = 0; timeout < 10; ++timeout) {
+                msleep(1);
+                if (!(oxygen_read8(chip, OXYGEN_EEPROM_STATUS)
+                      & OXYGEN_EEPROM_BUSY))
+                        return;
+        }
+        snd_printk(KERN_ERR "EEPROM write timeout\n");
+}