From: Troy Kisky <troy.kisky@boundarydevices.com>
Date: Thu, 19 Jul 2012 08:18:08 +0000 (+0000)
Subject: mxc_i2c.c: code i2c_probe as a 0 length i2c_write
X-Git-Tag: v2012.10-rc1~415^2~27
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=cfbb88d338f8a4ff5a0b165521ffc030efe72f31;p=u-boot

mxc_i2c.c: code i2c_probe as a 0 length i2c_write

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
---

diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
index 55a688a802..626e13eb11 100644
--- a/drivers/i2c/mxc_i2c.c
+++ b/drivers/i2c/mxc_i2c.c
@@ -301,23 +301,6 @@ exit:
 	return ret;
 }
 
-/*
- * Try if a chip add given address responds (probe the chip)
- */
-int i2c_probe(uchar chip)
-{
-	struct mxc_i2c_regs *i2c_regs = (struct mxc_i2c_regs *)I2C_BASE;
-	int ret;
-
-	ret = i2c_imx_start();
-	if (ret)
-		return ret;
-
-	ret = tx_byte(i2c_regs, chip << 1);
-	i2c_imx_stop();
-	return ret;
-}
-
 /*
  * Read data from I2C device
  */
@@ -406,3 +389,11 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
 
 	return ret;
 }
+
+/*
+ * Test if a chip at a given address responds (probe the chip)
+ */
+int i2c_probe(uchar chip)
+{
+	return i2c_write(chip, 0, 0, NULL, 0);
+}