diff options
Diffstat (limited to 'drivers/mfd/wm8994-core.c')
| -rw-r--r-- | drivers/mfd/wm8994-core.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index 1e321d349777..eec74aa55fdf 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -283,9 +283,24 @@ static int wm8994_suspend(struct device *dev) wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); - regcache_cache_only(wm8994->regmap, true); regcache_mark_dirty(wm8994->regmap); + /* Restore GPIO registers to prevent problems with mismatched + * pin configurations. + */ + ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1, + WM8994_GPIO_11); + if (ret != 0) + dev_err(dev, "Failed to restore GPIO registers: %d\n", ret); + + /* In case one of the GPIOs is used as a wake input. */ + ret = regcache_sync_region(wm8994->regmap, + WM8994_INTERRUPT_STATUS_1_MASK, + WM8994_INTERRUPT_STATUS_1_MASK); + if (ret != 0) + dev_err(dev, "Failed to restore interrupt mask: %d\n", ret); + + regcache_cache_only(wm8994->regmap, true); wm8994->suspended = true; ret = regulator_bulk_disable(wm8994->num_supplies, |