@@ -352,6 +352,43 @@ exit:
mutex_unlock(&chip->i2c_lock);
}
+
+static void pca953x_gpio_set_multiple(struct gpio_chip *gc,
+ unsigned long *mask, unsigned long *bits)
+{
+ struct pca953x_chip *chip = to_pca(gc);
+ u8 reg_val[MAX_BANK];
+ int ret, offset = 0;
+ int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);
+ int bank;
+
+ switch (chip->chip_type) {
+ case PCA953X_TYPE:
+ offset = PCA953X_OUTPUT;
+ break;
+ case PCA957X_TYPE:
+ offset = PCA957X_OUT;
+ break;
+ }
+
+ memcpy(reg_val, chip->reg_output, NBANK(chip));
+ mutex_lock(&chip->i2c_lock);
+ for(bank=0; bank<NBANK(chip); bank++) {
+ unsigned bankmask = mask[bank/4] >> ((bank % 4) * 8);
+ if(bankmask) {
+ unsigned bankval = bits[bank/4] >> ((bank % 4) * 8);
+ reg_val[bank] = (reg_val[bank] & ~bankmask) | bankval;
+ }
+ }
+ ret = i2c_smbus_write_i2c_block_data(chip->client, offset << bank_shift, NBANK(chip), reg_val);
+ if (ret)
+ goto exit;
+
+ memcpy(chip->reg_output, reg_val, NBANK(chip));
+exit:
+ mutex_unlock(&chip->i2c_lock);
+}
+
static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
{
struct gpio_chip *gc;
@@ -362,6 +399,7 @@ static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
gc->direction_output = pca953x_gpio_direction_output;
gc->get = pca953x_gpio_get_value;
gc->set = pca953x_gpio_set_value;
+ gc->set_multiple = pca953x_gpio_set_multiple;
gc->can_sleep = true;
gc->base = chip->gpio_start;
Tested with TCA6408 / TCA6416 devices. Signed-off-by: Phil Reid <preid@electromag.com.au> --- drivers/gpio/gpio-pca953x.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)