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gpio: pca953x: use the correct register address to do regcache sync 

For regcache_sync_region, need to use pca953x_recalc_addr() to get
the real register address.

Fixes: b765743005 ("gpio: pca953x: Restore registers after suspend/resume cycle")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Haibo Chen 2022-05-30 18:48:48 +08:00 коммит произвёл Bartosz Golaszewski
Родитель 8a172952fc
Коммит 43624eda86
1 изменённых файлов: 11 добавлений и 8 удалений
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19
drivers/gpio/gpio-pca953x.c
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@ -1108,20 +1108,21 @@ static int pca953x_regcache_sync(struct device *dev)
{
struct pca953x_chip *chip = dev_get_drvdata(dev);
int ret;
u8 regaddr;
/*
* The ordering between direction and output is important,
* sync these registers first and only then sync the rest.
*/
ret = regcache_sync_region(chip->regmap, chip->regs->direction,
chip->regs->direction + NBANK(chip));
regaddr = pca953x_recalc_addr(chip, chip->regs->direction, 0);
ret = regcache_sync_region(chip->regmap, regaddr, regaddr + NBANK(chip));
if (ret) {
dev_err(dev, "Failed to sync GPIO dir registers: %d\n", ret);
return ret;
}
ret = regcache_sync_region(chip->regmap, chip->regs->output,
chip->regs->output + NBANK(chip));
regaddr = pca953x_recalc_addr(chip, chip->regs->output, 0);
ret = regcache_sync_region(chip->regmap, regaddr, regaddr + NBANK(chip));
if (ret) {
dev_err(dev, "Failed to sync GPIO out registers: %d\n", ret);
return ret;
@ -1129,16 +1130,18 @@ static int pca953x_regcache_sync(struct device *dev)
#ifdef CONFIG_GPIO_PCA953X_IRQ
if (chip->driver_data & PCA_PCAL) {
ret = regcache_sync_region(chip->regmap, PCAL953X_IN_LATCH,
PCAL953X_IN_LATCH + NBANK(chip));
regaddr = pca953x_recalc_addr(chip, PCAL953X_IN_LATCH, 0);
ret = regcache_sync_region(chip->regmap, regaddr,
regaddr + NBANK(chip));
if (ret) {
dev_err(dev, "Failed to sync INT latch registers: %d\n",
ret);
return ret;
}
ret = regcache_sync_region(chip->regmap, PCAL953X_INT_MASK,
PCAL953X_INT_MASK + NBANK(chip));
regaddr = pca953x_recalc_addr(chip, PCAL953X_INT_MASK, 0);
ret = regcache_sync_region(chip->regmap, regaddr,
regaddr + NBANK(chip));
if (ret) {
dev_err(dev, "Failed to sync INT mask registers: %d\n",
ret);