From f39e578172f30d3bdd4533465c7ec00db738eb9d Mon Sep 17 00:00:00 2001
From: Will Newton <will.newton@gmail.com>
Date: Thu, 1 May 2008 04:35:10 -0700
Subject: [PATCH] gpio: pca953x: add support for pca9555 I2C I/O expander

Add support for pca9555 I2C I/O expander.  As the comment suggests this part
is software compatible with the pca9539.

Signed-off-by: Will Newton <will.newton@imgtec.com>
Cc: "eric miao" <eric.miao@marvell.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/gpio/pca953x.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 5a99e81d278..93f916720b1 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -30,6 +30,8 @@ static const struct i2c_device_id pca953x_id[] = {
 	{ "pca9537", 4, },
 	{ "pca9538", 8, },
 	{ "pca9539", 16, },
+	{ "pca9555", 16, },
+	{ "pca9557", 8, },
 	/* REVISIT several pca955x parts should work here too */
 	{ }
 };
@@ -193,7 +195,7 @@ static int __devinit pca953x_probe(struct i2c_client *client,
 {
 	struct pca953x_platform_data *pdata;
 	struct pca953x_chip *chip;
-	int ret, i;
+	int ret;
 
 	pdata = client->dev.platform_data;
 	if (pdata == NULL)
-- 
2.41.1