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pinctrl: intel: Read back TX buffer state

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In the same way as it's done in pinctrl-cherryview.c we would provide
a readback TX buffer state.

Fixes: 17fab47369 ("pinctrl: intel: Set pin direction properly")
Reported-by: "Bourque, Francis" <francis.bourque@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: "Bourque, Francis" <francis.bourque@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2017-08-24 11:19:33 +03:00 committed by Linus Walleij
parent 12b8f01818
commit d68b42e30b
1 changed files with 6 additions and 1 deletions
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7
drivers/pinctrl/intel/pinctrl-intel.c
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@ -751,12 +751,17 @@ static int intel_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
void __iomem *reg;
u32 padcfg0;
reg = intel_get_padcfg(pctrl, offset, PADCFG0);
if (!reg)
return -EINVAL;
return !!(readl(reg) & PADCFG0_GPIORXSTATE);
padcfg0 = readl(reg);
if (!(padcfg0 & PADCFG0_GPIOTXDIS))
return !!(padcfg0 & PADCFG0_GPIOTXSTATE);
return !!(padcfg0 & PADCFG0_GPIORXSTATE);
}
static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value)