2021-05-14 19:48:08

by Dario Binacchi

Subject: [PATCH] pinctrl: single: config: enable the pin's input

It enables / disables the input buffer. As explained in the description
of 'enum pin_config_param' this does not affect the pin's ability to
drive output.

Signed-off-by: Dario Binacchi <[email protected]>
---

drivers/pinctrl/pinctrl-single.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 2c9c9835f375..4e7cdb9ee855 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -534,6 +534,7 @@ static int pcs_pinconf_get(struct pinctrl_dev *pctldev,
case PIN_CONFIG_DRIVE_STRENGTH:
case PIN_CONFIG_SLEW_RATE:
case PIN_CONFIG_MODE_LOW_POWER:
+ case PIN_CONFIG_INPUT_ENABLE:
default:
*config = data;
break;
@@ -572,6 +573,7 @@ static int pcs_pinconf_set(struct pinctrl_dev *pctldev,
case PIN_CONFIG_DRIVE_STRENGTH:
case PIN_CONFIG_SLEW_RATE:
case PIN_CONFIG_MODE_LOW_POWER:
+ case PIN_CONFIG_INPUT_ENABLE:
shift = ffs(func->conf[i].mask) - 1;
data &= ~func->conf[i].mask;
data |= (arg << shift) & func->conf[i].mask;
@@ -918,6 +920,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
static const struct pcs_conf_type prop2[] = {
{ "pinctrl-single,drive-strength", PIN_CONFIG_DRIVE_STRENGTH, },
{ "pinctrl-single,slew-rate", PIN_CONFIG_SLEW_RATE, },
+ { "pinctrl-single,input-enable", PIN_CONFIG_INPUT_ENABLE, },
{ "pinctrl-single,input-schmitt", PIN_CONFIG_INPUT_SCHMITT, },
{ "pinctrl-single,low-power-mode", PIN_CONFIG_MODE_LOW_POWER, },
};
--
2.17.1

2021-05-19 13:42:21

by Tony Lindgren

Subject: Re: [PATCH] pinctrl: single: config: enable the pin's input

* Dario Binacchi <[email protected]> [210514 16:38]:
> It enables / disables the input buffer. As explained in the description
> of 'enum pin_config_param' this does not affect the pin's ability to
> drive output.
>
> Signed-off-by: Dario Binacchi <[email protected]>
> ---
>
> drivers/pinctrl/pinctrl-single.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> index 2c9c9835f375..4e7cdb9ee855 100644
> --- a/drivers/pinctrl/pinctrl-single.c
> +++ b/drivers/pinctrl/pinctrl-single.c
> @@ -534,6 +534,7 @@ static int pcs_pinconf_get(struct pinctrl_dev *pctldev,
> case PIN_CONFIG_DRIVE_STRENGTH:
> case PIN_CONFIG_SLEW_RATE:
> case PIN_CONFIG_MODE_LOW_POWER:
> + case PIN_CONFIG_INPUT_ENABLE:
> default:
> *config = data;
> break;
> @@ -572,6 +573,7 @@ static int pcs_pinconf_set(struct pinctrl_dev *pctldev,
> case PIN_CONFIG_DRIVE_STRENGTH:
> case PIN_CONFIG_SLEW_RATE:
> case PIN_CONFIG_MODE_LOW_POWER:
> + case PIN_CONFIG_INPUT_ENABLE:
> shift = ffs(func->conf[i].mask) - 1;
> data &= ~func->conf[i].mask;
> data |= (arg << shift) & func->conf[i].mask;
> @@ -918,6 +920,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
> static const struct pcs_conf_type prop2[] = {
> { "pinctrl-single,drive-strength", PIN_CONFIG_DRIVE_STRENGTH, },
> { "pinctrl-single,slew-rate", PIN_CONFIG_SLEW_RATE, },
> + { "pinctrl-single,input-enable", PIN_CONFIG_INPUT_ENABLE, },
> { "pinctrl-single,input-schmitt", PIN_CONFIG_INPUT_SCHMITT, },
> { "pinctrl-single,low-power-mode", PIN_CONFIG_MODE_LOW_POWER, },
> };

Looks OK to me if this works for Linus W. You need another patch to
update the binding though:

Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml

Or if there is such a patch floating around, I was not in Cc :)

Regards,

Tony

2021-05-19 17:08:28

by Dario Binacchi

Subject: Re: [PATCH] pinctrl: single: config: enable the pin's input

Hi Tony,

> Il 18/05/2021 08:08 Tony Lindgren <[email protected]> ha scritto:
>
>
> * Dario Binacchi <[email protected]> [210514 16:38]:
> > It enables / disables the input buffer. As explained in the description
> > of 'enum pin_config_param' this does not affect the pin's ability to
> > drive output.
> >
> > Signed-off-by: Dario Binacchi <[email protected]>
> > ---
> >
> > drivers/pinctrl/pinctrl-single.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> > index 2c9c9835f375..4e7cdb9ee855 100644
> > --- a/drivers/pinctrl/pinctrl-single.c
> > +++ b/drivers/pinctrl/pinctrl-single.c
> > @@ -534,6 +534,7 @@ static int pcs_pinconf_get(struct pinctrl_dev *pctldev,
> > case PIN_CONFIG_DRIVE_STRENGTH:
> > case PIN_CONFIG_SLEW_RATE:
> > case PIN_CONFIG_MODE_LOW_POWER:
> > + case PIN_CONFIG_INPUT_ENABLE:
> > default:
> > *config = data;
> > break;
> > @@ -572,6 +573,7 @@ static int pcs_pinconf_set(struct pinctrl_dev *pctldev,
> > case PIN_CONFIG_DRIVE_STRENGTH:
> > case PIN_CONFIG_SLEW_RATE:
> > case PIN_CONFIG_MODE_LOW_POWER:
> > + case PIN_CONFIG_INPUT_ENABLE:
> > shift = ffs(func->conf[i].mask) - 1;
> > data &= ~func->conf[i].mask;
> > data |= (arg << shift) & func->conf[i].mask;
> > @@ -918,6 +920,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
> > static const struct pcs_conf_type prop2[] = {
> > { "pinctrl-single,drive-strength", PIN_CONFIG_DRIVE_STRENGTH, },
> > { "pinctrl-single,slew-rate", PIN_CONFIG_SLEW_RATE, },
> > + { "pinctrl-single,input-enable", PIN_CONFIG_INPUT_ENABLE, },
> > { "pinctrl-single,input-schmitt", PIN_CONFIG_INPUT_SCHMITT, },
> > { "pinctrl-single,low-power-mode", PIN_CONFIG_MODE_LOW_POWER, },
> > };
>
> Looks OK to me if this works for Linus W. You need another patch to
> update the binding though:
>
> Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml
>
> Or if there is such a patch floating around, I was not in Cc :)

I'll add a documentation patch and CC you.

Thanks and regards,
Dario

>
> Regards,
>
> Tony

2021-05-19 18:35:53

by Dario Binacchi

Subject: Re: [PATCH] pinctrl: single: config: enable the pin's input

Hi Tony,

> Il 18/05/2021 08:08 Tony Lindgren <[email protected]> ha scritto:
>
>
> * Dario Binacchi <[email protected]> [210514 16:38]:
> > It enables / disables the input buffer. As explained in the description
> > of 'enum pin_config_param' this does not affect the pin's ability to
> > drive output.
> >
> > Signed-off-by: Dario Binacchi <[email protected]>
> > ---
> >
> > drivers/pinctrl/pinctrl-single.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> > index 2c9c9835f375..4e7cdb9ee855 100644
> > --- a/drivers/pinctrl/pinctrl-single.c
> > +++ b/drivers/pinctrl/pinctrl-single.c
> > @@ -534,6 +534,7 @@ static int pcs_pinconf_get(struct pinctrl_dev *pctldev,
> > case PIN_CONFIG_DRIVE_STRENGTH:
> > case PIN_CONFIG_SLEW_RATE:
> > case PIN_CONFIG_MODE_LOW_POWER:
> > + case PIN_CONFIG_INPUT_ENABLE:
> > default:
> > *config = data;
> > break;
> > @@ -572,6 +573,7 @@ static int pcs_pinconf_set(struct pinctrl_dev *pctldev,
> > case PIN_CONFIG_DRIVE_STRENGTH:
> > case PIN_CONFIG_SLEW_RATE:
> > case PIN_CONFIG_MODE_LOW_POWER:
> > + case PIN_CONFIG_INPUT_ENABLE:
> > shift = ffs(func->conf[i].mask) - 1;
> > data &= ~func->conf[i].mask;
> > data |= (arg << shift) & func->conf[i].mask;
> > @@ -918,6 +920,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
> > static const struct pcs_conf_type prop2[] = {
> > { "pinctrl-single,drive-strength", PIN_CONFIG_DRIVE_STRENGTH, },
> > { "pinctrl-single,slew-rate", PIN_CONFIG_SLEW_RATE, },
> > + { "pinctrl-single,input-enable", PIN_CONFIG_INPUT_ENABLE, },
> > { "pinctrl-single,input-schmitt", PIN_CONFIG_INPUT_SCHMITT, },
> > { "pinctrl-single,low-power-mode", PIN_CONFIG_MODE_LOW_POWER, },
> > };
>
> Looks OK to me if this works for Linus W. You need another patch to
> update the binding though:
>
> Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml

I think the Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml file
does not need to be updated.
The 'input-enable' property is already documented.

Thanks and regards,
Dario
>
> Or if there is such a patch floating around, I was not in Cc :)
>
> Regards,
>
> Tony