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pinctrl: baytrail: Avoid clearing debounce value when turning it off

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[ Upstream commit 0b74e40a4e ]

Baytrail pin control has a common register to set up debounce timeout.
When a pin configuration requested debounce to be disabled, the rest
of the pins may still want to have debounce enabled and thus rely on
the common timeout value. Avoid clearing debounce value when turning
it off for one pin while others may still use it.

Fixes: 658b476c74 ("pinctrl: baytrail: Add debounce configuration")
Depends-on: 04ff5a095d ("pinctrl: baytrail: Rectify debounce support")
Depends-on: 827e1579e1 ("pinctrl: baytrail: Rectify debounce support (part 2)")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andy Shevchenko
2020-11-12 21:03:01 +02:00
committed by Greg Kroah-Hartman
parent 60460308bf
commit c7122542f0
1 changed files with 7 additions and 1 deletions
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8
drivers/pinctrl/intel/pinctrl-baytrail.c
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@@ -1266,7 +1266,6 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
break;
case PIN_CONFIG_INPUT_DEBOUNCE:
debounce = readl(db_reg);
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
if (arg)
conf |= BYT_DEBOUNCE_EN;
@@ -1275,24 +1274,31 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
switch (arg) {
case 375:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_375US;
break;
case 750:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_750US;
break;
case 1500:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_1500US;
break;
case 3000:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_3MS;
break;
case 6000:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_6MS;
break;
case 12000:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_12MS;
break;
case 24000:
debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
debounce |= BYT_DEBOUNCE_PULSE_24MS;
break;
default: