On Wed, 2013-11-20 at 18:32 -0600, Scott Wood wrote:
> For userspace value setting, it looks like gpiolib blocks the write if
> the pin if FLAG_IS_OUT is set. This suggests that this is an error
> condition for other uses as well. Though, I notice that
> mpc8xxx_gpio_dir_out() calls gpio_set() be
On Wed, 2013-11-20 at 10:54 +0800, Liu Gang wrote:
> On Tue, 2013-11-19 at 16:51 -0600, Scott Wood wrote:
> > > @@ -71,6 +71,7 @@ static int mpc8572_gpio_get(struct gpio_chip *gc,
> > > unsigned int gpio)
> > > struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
> > >
> > > val
On Tue, 2013-11-19 at 16:51 -0600, Scott Wood wrote:
> > @@ -71,6 +71,7 @@ static int mpc8572_gpio_get(struct gpio_chip *gc,
> > unsigned int gpio)
> > struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
> >
> > val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_D
On Tue, 2013-11-19 at 16:32 +0100, Anatolij Gustschin wrote:
> On Fri, 15 Nov 2013 15:16:29 +0800
> Liu Gang wrote:
>
> > For MPC8572/MPC8536, the status of GPIOs defined as output
> > cannot be determined by reading GPDAT register, so the code
> > use shadow data register instead. But if the inp
On Fri, 2013-11-15 at 15:16 +0800, Liu Gang wrote:
> For MPC8572/MPC8536, the status of GPIOs defined as output
> cannot be determined by reading GPDAT register, so the code
> use shadow data register instead. But if the input pins are
> asserted high, they will always read high due to the shadow
>
On Fri, 15 Nov 2013 15:16:29 +0800
Liu Gang wrote:
> For MPC8572/MPC8536, the status of GPIOs defined as output
> cannot be determined by reading GPDAT register, so the code
> use shadow data register instead. But if the input pins are
> asserted high, they will always read high due to the shadow
On Fri, Nov 15, 2013 at 8:16 AM, Liu Gang wrote:
> For MPC8572/MPC8536, the status of GPIOs defined as output
> cannot be determined by reading GPDAT register, so the code
> use shadow data register instead. But if the input pins are
> asserted high, they will always read high due to the shadow
>
