diff options
| author | David Jander <david@protonic.nl> | 2019-08-27 08:46:29 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-08-28 12:55:24 +0200 |
| commit | 438b6c20e6161a1a7542490baa093c86732f77d6 (patch) | |
| tree | 4aa9c27b47d10fadc92e62e8b46fc7fa511c8307 /drivers/gpio/gpio-pca953x.c | |
| parent | gpio: pca953x: correct type of reg_direction (diff) | |
| download | linux-438b6c20e6161a1a7542490baa093c86732f77d6.tar.xz linux-438b6c20e6161a1a7542490baa093c86732f77d6.zip | |
gpio: pca953x: use pca953x_read_regs instead of regmap_bulk_read
The register number needs to be translated for chips with more than 8
ports. This patch fixes a bug causing all chips with more than 8 GPIO pins
to not work correctly.
Fixes: 0f25fda840a9 ("gpio: pca953x: Zap ad-hoc reg_direction cache")
Cc: Cc: <stable@vger.kernel.org>
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpio-pca953x.c')
| -rw-r--r-- | drivers/gpio/gpio-pca953x.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 30072a570bc2..48fea4c68e8d 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -606,8 +606,7 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d) u8 invert_irq_mask[MAX_BANK]; u8 reg_direction[MAX_BANK]; - regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction, - NBANK(chip)); + pca953x_read_regs(chip, chip->regs->direction, reg_direction); if (chip->driver_data & PCA_PCAL) { /* Enable latch on interrupt-enabled inputs */ @@ -710,8 +709,7 @@ static bool pca953x_irq_pending(struct pca953x_chip *chip, u8 *pending) return false; /* Remove output pins from the equation */ - regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction, - NBANK(chip)); + pca953x_read_regs(chip, chip->regs->direction, reg_direction); for (i = 0; i < NBANK(chip); i++) cur_stat[i] &= reg_direction[i]; @@ -789,8 +787,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, * interrupt. We have to rely on the previous read for * this purpose. */ - regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction, - NBANK(chip)); + pca953x_read_regs(chip, chip->regs->direction, reg_direction); for (i = 0; i < NBANK(chip); i++) chip->irq_stat[i] &= reg_direction[i]; mutex_init(&chip->irq_lock); |