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gpio: pca953x: Unify pca95{3,7}x_write_regs_16()

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At this point, these two functions only differ in whether they do or do not
set the address increment bit on PCA9575. Merge these two functions together
to simplify the code a bit.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Marek Vasut 2018-12-12 02:39:52 +01:00 committed by Linus Walleij
parent 8958262af3
commit 028a219ae5
1 changed files with 5 additions and 11 deletions
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16
drivers/gpio/gpio-pca953x.c
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@ -208,14 +208,11 @@ static int pca953x_write_regs_8(struct pca953x_chip *chip, int reg, u8 *val)
static int pca953x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
{
u16 word = get_unaligned((u16 *)val);
u32 regaddr = (reg << 1);
return i2c_smbus_write_word_data(chip->client, reg << 1, word);
}
static int pca957x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
{
u32 regaddr = (reg << 1) | REG_ADDR_AI;
/* PCA9575 needs address-increment on multi-byte writes */
if (PCA_CHIP_TYPE(chip->driver_data) == PCA957X_TYPE)
regaddr |= REG_ADDR_AI;
return i2c_smbus_write_i2c_block_data(chip->client, regaddr,
NBANK(chip), val);
@ -892,10 +889,7 @@ static int pca953x_probe(struct i2c_client *client,
chip->write_regs = pca953x_write_regs_24;
chip->read_regs = pca953x_read_regs_24;
} else {
if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE)
chip->write_regs = pca953x_write_regs_16;
else
chip->write_regs = pca957x_write_regs_16;
chip->write_regs = pca953x_write_regs_16;
chip->read_regs = pca953x_read_regs_16;
}