[RESEND PATCH] gpio: rgpio2p: Enhance reading of GPIO pin value

[Christoph Fritz]

*ping*

On Sat, 2022-04-23 at 22:37 +0200, Christoph Fritz wrote:
> Hello Stefano,
> 
>  could you please pick up this patch?
> 
> bye
>  -- Christoph
> 
> On Tue, 2022-04-05 at 12:29 +0200, Christoph Fritz wrote:
> > Add support for reading GPIO pin value when function is output.
> > With this patch applied, gpio toggle command is working.
> > 
> > Signed-off-by: Christoph Fritz <chf.fritz at googlemail.com>
> > Reviewed-by: Peng Fan <peng.fan at nxp.com>
> > Reviewed-by: Fabio Estevam <festevam at denx.de>
> > ---
> >  drivers/gpio/imx_rgpio2p.c | 14 +++++++++++++-
> >  1 file changed, 13 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpio/imx_rgpio2p.c b/drivers/gpio/imx_rgpio2p.c
> > index 0e2874ca95c..175e460aff5 100644
> > --- a/drivers/gpio/imx_rgpio2p.c
> > +++ b/drivers/gpio/imx_rgpio2p.c
> > @@ -39,6 +39,14 @@ static int imx_rgpio2p_is_output(struct gpio_regs
> > *regs, int offset)
> >         return val & (1 << offset) ? 1 : 0;
> >  }
> >  
> > +static int imx_rgpio2p_bank_get_direction(struct gpio_regs *regs,
> > int offset)
> > +{
> > +       if ((readl(&regs->gpio_pddr) >> offset) & 0x01)
> > +               return IMX_RGPIO2P_DIRECTION_OUT;
> > +
> > +       return IMX_RGPIO2P_DIRECTION_IN;
> > +}
> > +
> >  static void imx_rgpio2p_bank_direction(struct gpio_regs *regs, int
> > offset,
> >                                     enum imx_rgpio2p_direction
> > direction)
> >  {
> > @@ -67,7 +75,11 @@ static void imx_rgpio2p_bank_set_value(struct
> > gpio_regs *regs, int offset,
> >  
> >  static int imx_rgpio2p_bank_get_value(struct gpio_regs *regs, int
> > offset)
> >  {
> > -       return (readl(&regs->gpio_pdir) >> offset) & 0x01;
> > +       if (imx_rgpio2p_bank_get_direction(regs, offset) ==
> > +           IMX_RGPIO2P_DIRECTION_IN)
> > +               return (readl(&regs->gpio_pdir) >> offset) & 0x01;
> > +
> > +       return (readl(&regs->gpio_pdor) >> offset) & 0x01;
> >  }
> >  
> >  static int  imx_rgpio2p_direction_input(struct udevice *dev,
> > unsigned offset)
>