diff options
Diffstat (limited to 'drivers/gpio/pca953x.c')
| -rw-r--r-- | drivers/gpio/pca953x.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c index 9ceeb89f1325..8dc0164bd51e 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; @@ -200,8 +202,10 @@ static int __devinit pca953x_probe(struct i2c_client *client, int ret; pdata = client->dev.platform_data; - if (pdata == NULL) - return -ENODEV; + if (pdata == NULL) { + dev_dbg(&client->dev, "no platform data\n"); + return -EINVAL; + } chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL); if (chip == NULL) |