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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>
hifive-unleashed-5.1
Will Newton 2008-05-01 04:35:10 -07:00 committed by Linus Torvalds
parent 868eb7a853
commit f39e578172
1 changed files with 3 additions and 1 deletions
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4
drivers/gpio/pca953x.c
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@ -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)