---

yaml --- r: 92176 b: refs/heads/master c: 10e6d5f h: refs/heads/master v: v3
git-mirror · Apr 24, 2008 · 7c4ff69 · 7c4ff69
1 parent 2fc4fb0
commit 7c4ff69
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Showing 3 changed files with 23 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7a4356747298d1c899a12a25260d5ff1b4feeb5e
+refs/heads/master: 10e6d5f9b6edd4a12d678716d7fdb94278a83227
diff --git a/trunk/sound/pci/oxygen/oxygen.h b/trunk/sound/pci/oxygen/oxygen.h
@@ -146,6 +146,7 @@ void oxygen_write_ac97_masked(struct oxygen *chip, unsigned int codec,
 			      unsigned int index, u16 data, u16 mask);
 
 void oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data);
+void oxygen_write_i2c(struct oxygen *chip, u8 device, u8 map, u8 data);
 
 static inline void oxygen_set_bits8(struct oxygen *chip,
 				    unsigned int reg, u8 value)

diff --git a/trunk/sound/pci/oxygen/oxygen_io.c b/trunk/sound/pci/oxygen/oxygen_io.c
@@ -190,12 +190,31 @@ void oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data)
 		--count;
 	}
 
-	spin_lock_irq(&chip->reg_lock);
 	oxygen_write8(chip, OXYGEN_SPI_DATA1, data);
 	oxygen_write8(chip, OXYGEN_SPI_DATA2, data >> 8);
 	if (control & OXYGEN_SPI_DATA_LENGTH_3)
 		oxygen_write8(chip, OXYGEN_SPI_DATA3, data >> 16);
 	oxygen_write8(chip, OXYGEN_SPI_CONTROL, control);
-	spin_unlock_irq(&chip->reg_lock);
 }
 EXPORT_SYMBOL(oxygen_write_spi);
+
+void oxygen_write_i2c(struct oxygen *chip, u8 device, u8 map, u8 data)
+{
+	unsigned long timeout;
+
+	/* should not need more than about 300 us */
+	timeout = jiffies + msecs_to_jiffies(1);
+	do {
+		if (!(oxygen_read16(chip, OXYGEN_2WIRE_BUS_STATUS)
+		      & OXYGEN_2WIRE_BUSY))
+			break;
+		udelay(1);
+		cond_resched();
+	} while (time_after_eq(timeout, jiffies));
+
+	oxygen_write8(chip, OXYGEN_2WIRE_MAP, map);
+	oxygen_write8(chip, OXYGEN_2WIRE_DATA, data);
+	oxygen_write8(chip, OXYGEN_2WIRE_CONTROL,
+		      device | OXYGEN_2WIRE_DIR_WRITE);
+}
+EXPORT_SYMBOL(oxygen_write_i2c);