From ab5dc372021def8f40b34761babecad0bf868b1c Mon Sep 17 00:00:00 2001 From: David Brownell Date: Tue, 6 Jan 2009 14:42:27 -0800 Subject: gpio: pca953x handles more chips, i2c fault codes Minor updates to the pca953x GPIO expander driver: handle several more compatible parts, and stop assuming that the I2C layer's return codes are garbage (that's now been fixed). Signed-off-by: David Brownell Cc: Eric Miao Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpio/pca953x.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'drivers/gpio/pca953x.c') diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c index 9ceeb89f132..37f35388a2a 100644 --- a/drivers/gpio/pca953x.c +++ b/drivers/gpio/pca953x.c @@ -33,7 +33,12 @@ static const struct i2c_device_id pca953x_id[] = { { "pca9554", 8, }, { "pca9555", 16, }, { "pca9557", 8, }, + { "max7310", 8, }, + { "pca6107", 8, }, + { "tca6408", 8, }, + { "tca6416", 16, }, + /* NYET: { "tca6424", 24, }, */ { } }; MODULE_DEVICE_TABLE(i2c, pca953x_id); @@ -47,9 +52,6 @@ struct pca953x_chip { struct gpio_chip gpio_chip; }; -/* NOTE: we can't currently rely on fault codes to come from SMBus - * calls, so we map all errors to EIO here and return zero otherwise. - */ static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val) { int ret; @@ -61,7 +63,7 @@ static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val) if (ret < 0) { dev_err(&chip->client->dev, "failed writing register\n"); - return -EIO; + return ret; } return 0; @@ -78,7 +80,7 @@ static int pca953x_read_reg(struct pca953x_chip *chip, int reg, uint16_t *val) if (ret < 0) { dev_err(&chip->client->dev, "failed reading register\n"); - return -EIO; + return ret; } *val = (uint16_t)ret; -- cgit v1.2.3