diff options
| author | David Brownell <dbrownell@users.sourceforge.net> | 2009-01-06 23:42:27 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-07 00:59:25 +0100 |
| commit | ab5dc372021def8f40b34761babecad0bf868b1c (patch) | |
| tree | 0ccc13782c79913e61d688f4f14522b249028d4a /drivers/gpio/pca953x.c | |
| parent | twl4030-gpio: cleanup debounce (diff) | |
| download | linux-ab5dc372021def8f40b34761babecad0bf868b1c.tar.xz linux-ab5dc372021def8f40b34761babecad0bf868b1c.zip | |
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 <dbrownell@users.sourceforge.net>
Cc: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpio/pca953x.c')
| -rw-r--r-- | drivers/gpio/pca953x.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c index 9ceeb89f1325..37f35388a2ae 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; |