* [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get()
2021-06-01 16:21 [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type() Andy Shevchenko
@ 2021-06-01 16:21 ` Andy Shevchenko
2021-06-02 13:35 ` Bartosz Golaszewski
2021-06-02 14:05 ` Serge Semin
2021-06-02 13:34 ` [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type() Bartosz Golaszewski
2021-06-02 14:07 ` Serge Semin
2 siblings, 2 replies; 7+ messages in thread
From: Andy Shevchenko @ 2021-06-01 16:21 UTC (permalink / raw)
To: Andy Shevchenko, Serge Semin, linux-gpio, linux-kernel
Cc: Hoan Tran, Serge Semin, Linus Walleij, Bartosz Golaszewski
We have open coded variant of fwnode_irq_get() in dwapb_get_irq().
Replace it with a simple call.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpio-dwapb.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 939701c1465e..7d61f5821e32 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -528,17 +528,13 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode,
struct dwapb_port_property *pp)
{
- struct device_node *np = NULL;
- int irq = -ENXIO, j;
-
- if (fwnode_property_read_bool(fwnode, "interrupt-controller"))
- np = to_of_node(fwnode);
+ int irq, j;
for (j = 0; j < pp->ngpio; j++) {
- if (np)
- irq = of_irq_get(np, j);
- else if (has_acpi_companion(dev))
+ if (has_acpi_companion(dev))
irq = platform_get_irq_optional(to_platform_device(dev), j);
+ else
+ irq = fwnode_irq_get(fwnode, j);
if (irq > 0)
pp->irq[j] = irq;
}
--
2.30.2
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get()
2021-06-01 16:21 ` [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get() Andy Shevchenko
@ 2021-06-02 13:35 ` Bartosz Golaszewski
2021-06-02 14:05 ` Serge Semin
1 sibling, 0 replies; 7+ messages in thread
From: Bartosz Golaszewski @ 2021-06-02 13:35 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Serge Semin, linux-gpio, LKML, Hoan Tran, Serge Semin, Linus Walleij
On Tue, Jun 1, 2021 at 6:21 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
>
> We have open coded variant of fwnode_irq_get() in dwapb_get_irq().
> Replace it with a simple call.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/gpio/gpio-dwapb.c | 12 ++++--------
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index 939701c1465e..7d61f5821e32 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -528,17 +528,13 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
> static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode,
> struct dwapb_port_property *pp)
> {
> - struct device_node *np = NULL;
> - int irq = -ENXIO, j;
> -
> - if (fwnode_property_read_bool(fwnode, "interrupt-controller"))
> - np = to_of_node(fwnode);
> + int irq, j;
>
> for (j = 0; j < pp->ngpio; j++) {
> - if (np)
> - irq = of_irq_get(np, j);
> - else if (has_acpi_companion(dev))
> + if (has_acpi_companion(dev))
> irq = platform_get_irq_optional(to_platform_device(dev), j);
> + else
> + irq = fwnode_irq_get(fwnode, j);
> if (irq > 0)
> pp->irq[j] = irq;
> }
> --
> 2.30.2
>
Applied, thanks!
Bart
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get()
2021-06-01 16:21 ` [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get() Andy Shevchenko
2021-06-02 13:35 ` Bartosz Golaszewski
@ 2021-06-02 14:05 ` Serge Semin
2021-06-02 15:41 ` Andy Shevchenko
1 sibling, 1 reply; 7+ messages in thread
From: Serge Semin @ 2021-06-02 14:05 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Serge Semin, linux-gpio, linux-kernel, Hoan Tran, Linus Walleij,
Bartosz Golaszewski
Hello Andy
On Tue, Jun 01, 2021 at 07:21:28PM +0300, Andy Shevchenko wrote:
> We have open coded variant of fwnode_irq_get() in dwapb_get_irq().
> Replace it with a simple call.
Sometime ago I was trying to figure out a way to simplify this part of
the driver by using the platform_get_irq_optional() method for both
ACPI and OF cases. As you must have already found out by yourself it
didn't work out because of DW APB GPIO DT-nodes are supposed to have
sub-nodes with ports description. The OF-descriptors of these
sub-nodes aren't touched by the platform_get_irq_optional() method, it
just fails to detect IRQ-controller because it only works with the
device OF-node. So I gave up and decided to leave the code as is. I
can't remember now why I haven't used fwnode_irq_get() here. Most
likely I just preferred a direct of_irq_get() invocation here just for
clarity, since the only way we'd be calling fwnode_irq_get() here is
to actually get IRQ number from the OF-node anyway, while the
acpi_irq_get() method call made from the method fwnode_irq_get() will
hardly ever be required here. If you think otherwise or I missing
something please tell me.
Anyway by applying your patch at least we'll save a few lines of the
code and may in future have swnode-base IRQs support in the
fwnode_irq_get() method. So it still worths merging in. Thanks for
suggesting this change.
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
-Sergey
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/gpio/gpio-dwapb.c | 12 ++++--------
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index 939701c1465e..7d61f5821e32 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -528,17 +528,13 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
> static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode,
> struct dwapb_port_property *pp)
> {
> - struct device_node *np = NULL;
> - int irq = -ENXIO, j;
> -
> - if (fwnode_property_read_bool(fwnode, "interrupt-controller"))
> - np = to_of_node(fwnode);
> + int irq, j;
>
> for (j = 0; j < pp->ngpio; j++) {
> - if (np)
> - irq = of_irq_get(np, j);
> - else if (has_acpi_companion(dev))
> + if (has_acpi_companion(dev))
> irq = platform_get_irq_optional(to_platform_device(dev), j);
> + else
> + irq = fwnode_irq_get(fwnode, j);
> if (irq > 0)
> pp->irq[j] = irq;
> }
> --
> 2.30.2
>
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get()
2021-06-02 14:05 ` Serge Semin
@ 2021-06-02 15:41 ` Andy Shevchenko
0 siblings, 0 replies; 7+ messages in thread
From: Andy Shevchenko @ 2021-06-02 15:41 UTC (permalink / raw)
To: Serge Semin
Cc: Serge Semin, linux-gpio, linux-kernel, Hoan Tran, Linus Walleij,
Bartosz Golaszewski
On Wed, Jun 02, 2021 at 05:05:46PM +0300, Serge Semin wrote:
> On Tue, Jun 01, 2021 at 07:21:28PM +0300, Andy Shevchenko wrote:
> > We have open coded variant of fwnode_irq_get() in dwapb_get_irq().
> > Replace it with a simple call.
>
> Sometime ago I was trying to figure out a way to simplify this part of
> the driver by using the platform_get_irq_optional() method for both
> ACPI and OF cases. As you must have already found out by yourself it
> didn't work out because of DW APB GPIO DT-nodes are supposed to have
> sub-nodes with ports description. The OF-descriptors of these
> sub-nodes aren't touched by the platform_get_irq_optional() method, it
> just fails to detect IRQ-controller because it only works with the
> device OF-node. So I gave up and decided to leave the code as is. I
> can't remember now why I haven't used fwnode_irq_get() here. Most
> likely I just preferred a direct of_irq_get() invocation here just for
> clarity, since the only way we'd be calling fwnode_irq_get() here is
> to actually get IRQ number from the OF-node anyway, while the
> acpi_irq_get() method call made from the method fwnode_irq_get() will
> hardly ever be required here. If you think otherwise or I missing
> something please tell me.
>
> Anyway by applying your patch at least we'll save a few lines of the
> code and may in future have swnode-base IRQs support in the
> fwnode_irq_get() method. So it still worths merging in. Thanks for
> suggesting this change.
>
> Acked-by: Serge Semin <fancer.lancer@gmail.com>
> Tested-by: Serge Semin <fancer.lancer@gmail.com>
Thanks for testing!
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type()
2021-06-01 16:21 [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type() Andy Shevchenko
2021-06-01 16:21 ` [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get() Andy Shevchenko
@ 2021-06-02 13:34 ` Bartosz Golaszewski
2021-06-02 14:07 ` Serge Semin
2 siblings, 0 replies; 7+ messages in thread
From: Bartosz Golaszewski @ 2021-06-02 13:34 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Serge Semin, linux-gpio, LKML, Hoan Tran, Serge Semin, Linus Walleij
On Tue, Jun 1, 2021 at 6:21 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
>
> For more than 15 years we may not get into ->irq_set_type()
> without any meaningful type provided.
>
> Drop redundant check in dwapb_irq_set_type().
>
> See the commit e76de9f8eb67 ("[PATCH] genirq: add SA_TRIGGER support")
> out of curiosity.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/gpio/gpio-dwapb.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index d3233cc4b76b..939701c1465e 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -297,9 +297,6 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)
> irq_hw_number_t bit = irqd_to_hwirq(d);
> unsigned long level, polarity, flags;
>
> - if (type & ~IRQ_TYPE_SENSE_MASK)
> - return -EINVAL;
> -
> spin_lock_irqsave(&gc->bgpio_lock, flags);
> level = dwapb_read(gpio, GPIO_INTTYPE_LEVEL);
> polarity = dwapb_read(gpio, GPIO_INT_POLARITY);
> --
> 2.30.2
>
Applied, thanks!
Bart
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type()
2021-06-01 16:21 [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type() Andy Shevchenko
2021-06-01 16:21 ` [PATCH v1 2/2] gpio: dwapb: Switch to use fwnode_irq_get() Andy Shevchenko
2021-06-02 13:34 ` [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set_type() Bartosz Golaszewski
@ 2021-06-02 14:07 ` Serge Semin
2 siblings, 0 replies; 7+ messages in thread
From: Serge Semin @ 2021-06-02 14:07 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Serge Semin, linux-gpio, linux-kernel, Hoan Tran, Linus Walleij,
Bartosz Golaszewski
On Tue, Jun 01, 2021 at 07:21:27PM +0300, Andy Shevchenko wrote:
> For more than 15 years we may not get into ->irq_set_type()
> without any meaningful type provided.
>
> Drop redundant check in dwapb_irq_set_type().
>
> See the commit e76de9f8eb67 ("[PATCH] genirq: add SA_TRIGGER support")
> out of curiosity.
Why not. Thanks for the patch.
Acked-by: Serge Semin <fancer.lancer@gmail.com>
-Sergey
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/gpio/gpio-dwapb.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index d3233cc4b76b..939701c1465e 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -297,9 +297,6 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)
> irq_hw_number_t bit = irqd_to_hwirq(d);
> unsigned long level, polarity, flags;
>
> - if (type & ~IRQ_TYPE_SENSE_MASK)
> - return -EINVAL;
> -
> spin_lock_irqsave(&gc->bgpio_lock, flags);
> level = dwapb_read(gpio, GPIO_INTTYPE_LEVEL);
> polarity = dwapb_read(gpio, GPIO_INT_POLARITY);
> --
> 2.30.2
>
^ permalink raw reply [flat|nested] 7+ messages in thread