* [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
@ 2011-12-13 9:12 Wolfram Sang
2011-12-13 9:52 ` Anatolij Gustschin
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Wolfram Sang @ 2011-12-13 9:12 UTC (permalink / raw)
To: linuxppc-dev; +Cc: Anatolij Gustschin, linux-kernel, Linus Walleij
Add a 5121-custom reject if an input-only pin is requested to be output
(see 18.3.1.1 in the refman). Also, rewrite mach-specific quirk setup to
consume less lines which scales better.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
---
drivers/gpio/gpio-mpc8xxx.c | 17 ++++++++++++-----
1 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index ec3fcf0..25dc736 100644
--- a/drivers/gpio/gpio-mpc8xxx.c
+++ b/drivers/gpio/gpio-mpc8xxx.c
@@ -115,6 +115,14 @@ static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
return 0;
}
+static int mpc5121_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+ /* GPIO 28..31 are input only on MPC5121 */
+ if (gpio >= 28)
+ return -EINVAL;
+
+ return mpc8xxx_gpio_dir_out(gc, gpio, val);
+}
static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
{
struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
@@ -340,11 +348,10 @@ static void __init mpc8xxx_add_controller(struct device_node *np)
mm_gc->save_regs = mpc8xxx_gpio_save_regs;
gc->ngpio = MPC8XXX_GPIO_PINS;
gc->direction_input = mpc8xxx_gpio_dir_in;
- gc->direction_output = mpc8xxx_gpio_dir_out;
- if (of_device_is_compatible(np, "fsl,mpc8572-gpio"))
- gc->get = mpc8572_gpio_get;
- else
- gc->get = mpc8xxx_gpio_get;
+ gc->direction_output = of_device_is_compatible(np, "fsl,mpc5121-gpio") ?
+ mpc5121_gpio_dir_out : mpc8xxx_gpio_dir_out;
+ gc->get = of_device_is_compatible(np, "fsl,mpc8572-gpio") ?
+ mpc8572_gpio_get : mpc8xxx_gpio_get;
gc->set = mpc8xxx_gpio_set;
gc->to_irq = mpc8xxx_gpio_to_irq;
--
1.7.7.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
2011-12-13 9:12 [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121 Wolfram Sang
@ 2011-12-13 9:52 ` Anatolij Gustschin
2011-12-13 10:03 ` Wolfram Sang
2011-12-13 18:07 ` Grant Likely
2011-12-13 18:16 ` Grant Likely
2 siblings, 1 reply; 6+ messages in thread
From: Anatolij Gustschin @ 2011-12-13 9:52 UTC (permalink / raw)
To: Wolfram Sang; +Cc: linuxppc-dev, linux-kernel, Linus Walleij
Hi Wolfram,
Looks mostly good to me. Please see minor comments below.
On Tue, 13 Dec 2011 10:12:48 +0100
Wolfram Sang <w.sang@pengutronix.de> wrote:
...
> diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
> index ec3fcf0..25dc736 100644
> --- a/drivers/gpio/gpio-mpc8xxx.c
> +++ b/drivers/gpio/gpio-mpc8xxx.c
> @@ -115,6 +115,14 @@ static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
> return 0;
> }
>
> +static int mpc5121_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
Line over 80 chars.
> +{
> + /* GPIO 28..31 are input only on MPC5121 */
> + if (gpio >= 28)
> + return -EINVAL;
> +
> + return mpc8xxx_gpio_dir_out(gc, gpio, val);
> +}
> static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
Please separate by an empty line. Thanks.
Anatolij
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
2011-12-13 9:52 ` Anatolij Gustschin
@ 2011-12-13 10:03 ` Wolfram Sang
0 siblings, 0 replies; 6+ messages in thread
From: Wolfram Sang @ 2011-12-13 10:03 UTC (permalink / raw)
To: Anatolij Gustschin; +Cc: linuxppc-dev, linux-kernel, Linus Walleij
[-- Attachment #1: Type: text/plain, Size: 1256 bytes --]
On Tue, Dec 13, 2011 at 10:52:43AM +0100, Anatolij Gustschin wrote:
> Hi Wolfram,
>
> Looks mostly good to me. Please see minor comments below.
>
> On Tue, 13 Dec 2011 10:12:48 +0100
> Wolfram Sang <w.sang@pengutronix.de> wrote:
> ...
> > diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
> > index ec3fcf0..25dc736 100644
> > --- a/drivers/gpio/gpio-mpc8xxx.c
> > +++ b/drivers/gpio/gpio-mpc8xxx.c
> > @@ -115,6 +115,14 @@ static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
> > return 0;
> > }
> >
> > +static int mpc5121_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
>
> Line over 80 chars.
In this case, I think the alternative would be far less readable.
> > +{
> > + /* GPIO 28..31 are input only on MPC5121 */
> > + if (gpio >= 28)
> > + return -EINVAL;
> > +
> > + return mpc8xxx_gpio_dir_out(gc, gpio, val);
> > +}
> > static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
>
> Please separate by an empty line. Thanks.
Ups, yes.
Thanks,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
2011-12-13 9:12 [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121 Wolfram Sang
2011-12-13 9:52 ` Anatolij Gustschin
@ 2011-12-13 18:07 ` Grant Likely
2011-12-13 18:16 ` Grant Likely
2 siblings, 0 replies; 6+ messages in thread
From: Grant Likely @ 2011-12-13 18:07 UTC (permalink / raw)
To: Wolfram Sang
Cc: linuxppc-dev, Anatolij Gustschin, linux-kernel, Linus Walleij
On Tue, Dec 13, 2011 at 10:12:48AM +0100, Wolfram Sang wrote:
> Add a 5121-custom reject if an input-only pin is requested to be output
> (see 18.3.1.1 in the refman). Also, rewrite mach-specific quirk setup to
> consume less lines which scales better.
>
> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Applied, thanks.
g.
> ---
> drivers/gpio/gpio-mpc8xxx.c | 17 ++++++++++++-----
> 1 files changed, 12 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
> index ec3fcf0..25dc736 100644
> --- a/drivers/gpio/gpio-mpc8xxx.c
> +++ b/drivers/gpio/gpio-mpc8xxx.c
> @@ -115,6 +115,14 @@ static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
> return 0;
> }
>
> +static int mpc5121_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
> +{
> + /* GPIO 28..31 are input only on MPC5121 */
> + if (gpio >= 28)
> + return -EINVAL;
> +
> + return mpc8xxx_gpio_dir_out(gc, gpio, val);
> +}
> static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
> {
> struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
> @@ -340,11 +348,10 @@ static void __init mpc8xxx_add_controller(struct device_node *np)
> mm_gc->save_regs = mpc8xxx_gpio_save_regs;
> gc->ngpio = MPC8XXX_GPIO_PINS;
> gc->direction_input = mpc8xxx_gpio_dir_in;
> - gc->direction_output = mpc8xxx_gpio_dir_out;
> - if (of_device_is_compatible(np, "fsl,mpc8572-gpio"))
> - gc->get = mpc8572_gpio_get;
> - else
> - gc->get = mpc8xxx_gpio_get;
> + gc->direction_output = of_device_is_compatible(np, "fsl,mpc5121-gpio") ?
> + mpc5121_gpio_dir_out : mpc8xxx_gpio_dir_out;
> + gc->get = of_device_is_compatible(np, "fsl,mpc8572-gpio") ?
> + mpc8572_gpio_get : mpc8xxx_gpio_get;
> gc->set = mpc8xxx_gpio_set;
> gc->to_irq = mpc8xxx_gpio_to_irq;
>
> --
> 1.7.7.1
>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
2011-12-13 9:12 [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121 Wolfram Sang
2011-12-13 9:52 ` Anatolij Gustschin
2011-12-13 18:07 ` Grant Likely
@ 2011-12-13 18:16 ` Grant Likely
2011-12-13 18:23 ` Wolfram Sang
2 siblings, 1 reply; 6+ messages in thread
From: Grant Likely @ 2011-12-13 18:16 UTC (permalink / raw)
To: Wolfram Sang
Cc: linuxppc-dev, Anatolij Gustschin, linux-kernel, Linus Walleij
On Tue, Dec 13, 2011 at 10:12:48AM +0100, Wolfram Sang wrote:
> Add a 5121-custom reject if an input-only pin is requested to be output
> (see 18.3.1.1 in the refman). Also, rewrite mach-specific quirk setup to
> consume less lines which scales better.
>
> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
> ---
> drivers/gpio/gpio-mpc8xxx.c | 17 ++++++++++++-----
> 1 files changed, 12 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
> index ec3fcf0..25dc736 100644
> --- a/drivers/gpio/gpio-mpc8xxx.c
> +++ b/drivers/gpio/gpio-mpc8xxx.c
> @@ -115,6 +115,14 @@ static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
> return 0;
> }
>
> +static int mpc5121_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
> +{
> + /* GPIO 28..31 are input only on MPC5121 */
> + if (gpio >= 28)
> + return -EINVAL;
> +
> + return mpc8xxx_gpio_dir_out(gc, gpio, val);
> +}
> static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
This actually caused a build failure. mpc8xxx_gpio_dir_out() was used before
it was declared. I moved the symbol to immediately below and applied anyway,
but how did it compile for you? Should I drop this patch until you retest?
g.
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
2011-12-13 18:16 ` Grant Likely
@ 2011-12-13 18:23 ` Wolfram Sang
0 siblings, 0 replies; 6+ messages in thread
From: Wolfram Sang @ 2011-12-13 18:23 UTC (permalink / raw)
To: Grant Likely
Cc: linuxppc-dev, Anatolij Gustschin, linux-kernel, Linus Walleij
[-- Attachment #1: Type: text/plain, Size: 1681 bytes --]
On Tue, Dec 13, 2011 at 11:16:59AM -0700, Grant Likely wrote:
> On Tue, Dec 13, 2011 at 10:12:48AM +0100, Wolfram Sang wrote:
> > Add a 5121-custom reject if an input-only pin is requested to be output
> > (see 18.3.1.1 in the refman). Also, rewrite mach-specific quirk setup to
> > consume less lines which scales better.
> >
> > Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
> > ---
> > drivers/gpio/gpio-mpc8xxx.c | 17 ++++++++++++-----
> > 1 files changed, 12 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
> > index ec3fcf0..25dc736 100644
> > --- a/drivers/gpio/gpio-mpc8xxx.c
> > +++ b/drivers/gpio/gpio-mpc8xxx.c
> > @@ -115,6 +115,14 @@ static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
> > return 0;
> > }
> >
> > +static int mpc5121_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
> > +{
> > + /* GPIO 28..31 are input only on MPC5121 */
> > + if (gpio >= 28)
> > + return -EINVAL;
> > +
> > + return mpc8xxx_gpio_dir_out(gc, gpio, val);
> > +}
> > static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
>
> This actually caused a build failure. mpc8xxx_gpio_dir_out() was used before
> it was declared. I moved the symbol to immediately below and applied anyway,
> but how did it compile for you? Should I drop this patch until you retest?
Huh, I am surprised as well. Will investigate tomorrow. Sorry for the
inconvenience.
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-12-13 18:23 UTC | newest]
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2011-12-13 9:12 [PATCH RESEND] gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121 Wolfram Sang
2011-12-13 9:52 ` Anatolij Gustschin
2011-12-13 10:03 ` Wolfram Sang
2011-12-13 18:07 ` Grant Likely
2011-12-13 18:16 ` Grant Likely
2011-12-13 18:23 ` Wolfram Sang
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