[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grygorii Strashko]

The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
"of/irq: do irq resolution in platform_get_irq" from Rob Herring -
moves resolving of the interrupt resources in platform_get_irq().
But this solution isn't complete because platform_get_irq_byname()
need to be modified the same way.

Hence, fix it by adding interrupt resolution code at the
platform_get_irq_byname() function too.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Rob Herring <robh@kernel.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
Changes in v1:
- use of_property_match_string() to get IRQ index by name
- minor comments fixed

RFC:
 https://lkml.org/lkml/2014/5/19/325

 drivers/base/platform.c |    7 +++++--
 drivers/of/irq.c        |   22 ++++++++++++++++++++++
 include/linux/of_irq.h  |    5 +++++
 3 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 5b47210..9e9227e 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -131,9 +131,12 @@ EXPORT_SYMBOL_GPL(platform_get_resource_byname);
  */
 int platform_get_irq_byname(struct platform_device *dev, const char *name)
 {
-	struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ,
-							  name);
+	struct resource *r;
+
+	if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node)
+		return of_irq_get_byname(dev->dev.of_node, name);
 
+	r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name);
 	return r ? r->start : -ENXIO;
 }
 EXPORT_SYMBOL_GPL(platform_get_irq_byname);
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 5aeb894..3e06a69 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -406,6 +406,28 @@ int of_irq_get(struct device_node *dev, int index)
 }
 
 /**
+ * of_irq_get_byname - Decode a node's IRQ and return it as a Linux irq number
+ * @dev: pointer to device tree node
+ * @name: irq name
+ *
+ * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+ * is not yet created, or error code in case of any other failure.
+ */
+int of_irq_get_byname(struct device_node *dev, const char *name)
+{
+	int index;
+
+	if (unlikely(!name))
+		return -EINVAL;
+
+	index = of_property_match_string(dev, "interrupt-names", name);
+	if (index < 0)
+		return index;
+
+	return of_irq_get(dev, index);
+}
+
+/**
  * of_irq_count - Count the number of IRQs a node uses
  * @dev: pointer to device tree node
  */
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 6404253..bfec136 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -45,6 +45,7 @@ extern void of_irq_init(const struct of_device_id *matches);
 #ifdef CONFIG_OF_IRQ
 extern int of_irq_count(struct device_node *dev);
 extern int of_irq_get(struct device_node *dev, int index);
+extern int of_irq_get_byname(struct device_node *dev, const char *name);
 #else
 static inline int of_irq_count(struct device_node *dev)
 {
@@ -54,6 +55,10 @@ static inline int of_irq_get(struct device_node *dev, int index)
 {
 	return 0;
 }
+static inline int of_irq_get_byname(struct device_node *dev, const char *name)
+{
+	return 0;
+}
 #endif
 
 #if defined(CONFIG_OF)
-- 
1.7.9.5

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grant Likely]

On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
> moves resolving of the interrupt resources in platform_get_irq().
> But this solution isn't complete because platform_get_irq_byname()
> need to be modified the same way.
> 
> Hence, fix it by adding interrupt resolution code at the
> platform_get_irq_byname() function too.
> 
> Cc: Russell King <linux@arm.linux.org.uk>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Tony Lindgren <tony@atomide.com>
> Cc: Grant Likely <grant.likely@linaro.org>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

Applied, Thanks.

g.

> ---
> Changes in v1:
> - use of_property_match_string() to get IRQ index by name
> - minor comments fixed
> 
> RFC:
>  https://lkml.org/lkml/2014/5/19/325
> 
>  drivers/base/platform.c |    7 +++++--
>  drivers/of/irq.c        |   22 ++++++++++++++++++++++
>  include/linux/of_irq.h  |    5 +++++
>  3 files changed, 32 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> index 5b47210..9e9227e 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -131,9 +131,12 @@ EXPORT_SYMBOL_GPL(platform_get_resource_byname);
>   */
>  int platform_get_irq_byname(struct platform_device *dev, const char *name)
>  {
> -	struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ,
> -							  name);
> +	struct resource *r;
> +
> +	if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node)
> +		return of_irq_get_byname(dev->dev.of_node, name);
>  
> +	r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name);
>  	return r ? r->start : -ENXIO;
>  }
>  EXPORT_SYMBOL_GPL(platform_get_irq_byname);
> diff --git a/drivers/of/irq.c b/drivers/of/irq.c
> index 5aeb894..3e06a69 100644
> --- a/drivers/of/irq.c
> +++ b/drivers/of/irq.c
> @@ -406,6 +406,28 @@ int of_irq_get(struct device_node *dev, int index)
>  }
>  
>  /**
> + * of_irq_get_byname - Decode a node's IRQ and return it as a Linux irq number
> + * @dev: pointer to device tree node
> + * @name: irq name
> + *
> + * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
> + * is not yet created, or error code in case of any other failure.
> + */
> +int of_irq_get_byname(struct device_node *dev, const char *name)
> +{
> +	int index;
> +
> +	if (unlikely(!name))
> +		return -EINVAL;
> +
> +	index = of_property_match_string(dev, "interrupt-names", name);
> +	if (index < 0)
> +		return index;
> +
> +	return of_irq_get(dev, index);
> +}
> +
> +/**
>   * of_irq_count - Count the number of IRQs a node uses
>   * @dev: pointer to device tree node
>   */
> diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
> index 6404253..bfec136 100644
> --- a/include/linux/of_irq.h
> +++ b/include/linux/of_irq.h
> @@ -45,6 +45,7 @@ extern void of_irq_init(const struct of_device_id *matches);
>  #ifdef CONFIG_OF_IRQ
>  extern int of_irq_count(struct device_node *dev);
>  extern int of_irq_get(struct device_node *dev, int index);
> +extern int of_irq_get_byname(struct device_node *dev, const char *name);
>  #else
>  static inline int of_irq_count(struct device_node *dev)
>  {
> @@ -54,6 +55,10 @@ static inline int of_irq_get(struct device_node *dev, int index)
>  {
>  	return 0;
>  }
> +static inline int of_irq_get_byname(struct device_node *dev, const char *name)
> +{
> +	return 0;
> +}
>  #endif
>  
>  #if defined(CONFIG_OF)
> -- 
> 1.7.9.5
> 

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Kevin Hilman]

On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>> moves resolving of the interrupt resources in platform_get_irq().
>> But this solution isn't complete because platform_get_irq_byname()
>> need to be modified the same way.
>>
>> Hence, fix it by adding interrupt resolution code at the
>> platform_get_irq_byname() function too.
>>
>> Cc: Russell King <linux@arm.linux.org.uk>
>> Cc: Rob Herring <robh@kernel.org>
>> Cc: Tony Lindgren <tony@atomide.com>
>> Cc: Grant Likely <grant.likely@linaro.org>
>> Cc: Thierry Reding <thierry.reding@gmail.com>
>>
>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>
> Applied, Thanks.

As of next-20150526, the ST u8500 Snowball board has been failing boot
in linux-next, and was bisected down to this patch (commit
ad69674e73a1 in -next).   Full boot failure attached.

I have not dug any deeper, but can confirm that next-20140526 with
this patch reverted boots again on the snowball board.

Kevin
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[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Rob Herring]

On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
> On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
>> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>>> moves resolving of the interrupt resources in platform_get_irq().
>>> But this solution isn't complete because platform_get_irq_byname()
>>> need to be modified the same way.
>>>
>>> Hence, fix it by adding interrupt resolution code at the
>>> platform_get_irq_byname() function too.
>>>
>>> Cc: Russell King <linux@arm.linux.org.uk>
>>> Cc: Rob Herring <robh@kernel.org>
>>> Cc: Tony Lindgren <tony@atomide.com>
>>> Cc: Grant Likely <grant.likely@linaro.org>
>>> Cc: Thierry Reding <thierry.reding@gmail.com>
>>>
>>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>
>> Applied, Thanks.
>
> As of next-20150526, the ST u8500 Snowball board has been failing boot
> in linux-next, and was bisected down to this patch (commit
> ad69674e73a1 in -next).   Full boot failure attached.
>
> I have not dug any deeper, but can confirm that next-20140526 with
> this patch reverted boots again on the snowball board.

There's a patch on the list which fixes it. The problem is stmmac
driver was expecting only one error code.

Rob

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Lee Jones]

On Tue, 27 May 2014, Rob Herring wrote:

> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
> > On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
> >> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
> >>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
> >>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
> >>> moves resolving of the interrupt resources in platform_get_irq().
> >>> But this solution isn't complete because platform_get_irq_byname()
> >>> need to be modified the same way.
> >>>
> >>> Hence, fix it by adding interrupt resolution code at the
> >>> platform_get_irq_byname() function too.
> >>>
> >>> Cc: Russell King <linux@arm.linux.org.uk>
> >>> Cc: Rob Herring <robh@kernel.org>
> >>> Cc: Tony Lindgren <tony@atomide.com>
> >>> Cc: Grant Likely <grant.likely@linaro.org>
> >>> Cc: Thierry Reding <thierry.reding@gmail.com>
> >>>
> >>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> >>
> >> Applied, Thanks.
> >
> > As of next-20150526, the ST u8500 Snowball board has been failing boot
> > in linux-next, and was bisected down to this patch (commit
> > ad69674e73a1 in -next).   Full boot failure attached.
> >
> > I have not dug any deeper, but can confirm that next-20140526 with
> > this patch reverted boots again on the snowball board.
> 
> There's a patch on the list which fixes it. The problem is stmmac
> driver was expecting only one error code.

Does Snowball even use stmmac?

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Linus Walleij]

On Wed, May 28, 2014 at 9:18 AM, Lee Jones <lee.jones@linaro.org> wrote:
> On Tue, 27 May 2014, Rob Herring wrote:
>
>> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
>> > On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
>> >> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>> >>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>> >>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>> >>> moves resolving of the interrupt resources in platform_get_irq().
>> >>> But this solution isn't complete because platform_get_irq_byname()
>> >>> need to be modified the same way.
>> >>>
>> >>> Hence, fix it by adding interrupt resolution code at the
>> >>> platform_get_irq_byname() function too.
>> >>>
>> >>> Cc: Russell King <linux@arm.linux.org.uk>
>> >>> Cc: Rob Herring <robh@kernel.org>
>> >>> Cc: Tony Lindgren <tony@atomide.com>
>> >>> Cc: Grant Likely <grant.likely@linaro.org>
>> >>> Cc: Thierry Reding <thierry.reding@gmail.com>
>> >>>
>> >>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>> >>
>> >> Applied, Thanks.
>> >
>> > As of next-20150526, the ST u8500 Snowball board has been failing boot
>> > in linux-next, and was bisected down to this patch (commit
>> > ad69674e73a1 in -next).   Full boot failure attached.
>> >
>> > I have not dug any deeper, but can confirm that next-20140526 with
>> > this patch reverted boots again on the snowball board.
>>
>> There's a patch on the list which fixes it. The problem is stmmac
>> driver was expecting only one error code.
>
> Does Snowball even use stmmac?

No.

I don't get this...

Yours,
Linus Walleij

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Chen-Yu Tsai]

On Wed, May 28, 2014 at 4:25 PM, Linus Walleij <linus.walleij@linaro.org> wrote:
> On Wed, May 28, 2014 at 9:18 AM, Lee Jones <lee.jones@linaro.org> wrote:
>> On Tue, 27 May 2014, Rob Herring wrote:
>>
>>> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
>>> > On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
>>> >> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>>> >>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>>> >>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>>> >>> moves resolving of the interrupt resources in platform_get_irq().
>>> >>> But this solution isn't complete because platform_get_irq_byname()
>>> >>> need to be modified the same way.
>>> >>>
>>> >>> Hence, fix it by adding interrupt resolution code at the
>>> >>> platform_get_irq_byname() function too.
>>> >>>
>>> >>> Cc: Russell King <linux@arm.linux.org.uk>
>>> >>> Cc: Rob Herring <robh@kernel.org>
>>> >>> Cc: Tony Lindgren <tony@atomide.com>
>>> >>> Cc: Grant Likely <grant.likely@linaro.org>
>>> >>> Cc: Thierry Reding <thierry.reding@gmail.com>
>>> >>>
>>> >>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>> >>
>>> >> Applied, Thanks.
>>> >
>>> > As of next-20150526, the ST u8500 Snowball board has been failing boot
>>> > in linux-next, and was bisected down to this patch (commit
>>> > ad69674e73a1 in -next).   Full boot failure attached.
>>> >
>>> > I have not dug any deeper, but can confirm that next-20140526 with
>>> > this patch reverted boots again on the snowball board.
>>>
>>> There's a patch on the list which fixes it. The problem is stmmac
>>> driver was expecting only one error code.
>>
>> Does Snowball even use stmmac?
>
> No.
>
> I don't get this...

Log says musb is wrestling control over some pins with some other driver:

[    1.441497] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
[    1.453369] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
status -22
[    1.460571] pinctrl-nomadik soc:pinctrl: could not request pin 256
(GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
[    1.472076] musb-hdrc musb-hdrc.0.auto: Error applying setting,
reverse things back
[    1.479827] HS USB OTG: no transceiver configured
[    1.484558] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed
with status -517
[    1.492309] platform musb-hdrc.0.auto: Driver musb-hdrc requests
probe deferral
[    1.500183] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
[    1.512023] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
status -22
[    1.519226] pinctrl-nomadik soc:pinctrl: could not request pin 256
(GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
[    1.530731] musb-ux500 musb-hdrc.0.auto: Error applying setting,
reverse things back
[    1.539184] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
requested by a03e0000.usb_per5; cannot claim for musb-hdrc.1.auto
[    1.551025] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.1.auto)
status -22
[    1.558258] pinctrl-nomadik soc:pinctrl: could not request pin 256
(GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
[    1.569732] musb-hdrc musb-hdrc.1.auto: Error applying setting,
reverse things back
[    1.577453] HS USB OTG: no transceiver configured

[ .. repeats until the end .. ]

I think this is not related to this patch.


ChenYu

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grant Likely]

On Wed, May 28, 2014 at 9:49 AM, Chen-Yu Tsai <wens@csie.org> wrote:
> On Wed, May 28, 2014 at 4:25 PM, Linus Walleij <linus.walleij@linaro.org> wrote:
>> On Wed, May 28, 2014 at 9:18 AM, Lee Jones <lee.jones@linaro.org> wrote:
>>> On Tue, 27 May 2014, Rob Herring wrote:
>>>
>>>> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
>>>> > On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
>>>> >> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>>>> >>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>>>> >>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>>>> >>> moves resolving of the interrupt resources in platform_get_irq().
>>>> >>> But this solution isn't complete because platform_get_irq_byname()
>>>> >>> need to be modified the same way.
>>>> >>>
>>>> >>> Hence, fix it by adding interrupt resolution code at the
>>>> >>> platform_get_irq_byname() function too.
>>>> >>>
>>>> >>> Cc: Russell King <linux@arm.linux.org.uk>
>>>> >>> Cc: Rob Herring <robh@kernel.org>
>>>> >>> Cc: Tony Lindgren <tony@atomide.com>
>>>> >>> Cc: Grant Likely <grant.likely@linaro.org>
>>>> >>> Cc: Thierry Reding <thierry.reding@gmail.com>
>>>> >>>
>>>> >>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>>> >>
>>>> >> Applied, Thanks.
>>>> >
>>>> > As of next-20150526, the ST u8500 Snowball board has been failing boot
>>>> > in linux-next, and was bisected down to this patch (commit
>>>> > ad69674e73a1 in -next).   Full boot failure attached.
>>>> >
>>>> > I have not dug any deeper, but can confirm that next-20140526 with
>>>> > this patch reverted boots again on the snowball board.
>>>>
>>>> There's a patch on the list which fixes it. The problem is stmmac
>>>> driver was expecting only one error code.
>>>
>>> Does Snowball even use stmmac?
>>
>> No.
>>
>> I don't get this...
>
> Log says musb is wrestling control over some pins with some other driver:
>
> [    1.441497] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
> [    1.453369] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
> status -22
> [    1.460571] pinctrl-nomadik soc:pinctrl: could not request pin 256
> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
> [    1.472076] musb-hdrc musb-hdrc.0.auto: Error applying setting,
> reverse things back
> [    1.479827] HS USB OTG: no transceiver configured
> [    1.484558] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed
> with status -517
> [    1.492309] platform musb-hdrc.0.auto: Driver musb-hdrc requests
> probe deferral
> [    1.500183] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
> [    1.512023] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
> status -22
> [    1.519226] pinctrl-nomadik soc:pinctrl: could not request pin 256
> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
> [    1.530731] musb-ux500 musb-hdrc.0.auto: Error applying setting,
> reverse things back
> [    1.539184] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.1.auto
> [    1.551025] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.1.auto)
> status -22
> [    1.558258] pinctrl-nomadik soc:pinctrl: could not request pin 256
> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
> [    1.569732] musb-hdrc musb-hdrc.1.auto: Error applying setting,
> reverse things back
> [    1.577453] HS USB OTG: no transceiver configured
>
> [ .. repeats until the end .. ]
>
> I think this is not related to this patch.

The bisected patch causes platform_get_irq() to always parse the
devicetree to obtain the irq instead of using a precalculated value in
the platform_device. There are two possible scenarios for this problem
that I can think of:
1) Platform_get_irq() is getting called multiple times (which would
happen on a deferred probe) but the setup code isn't handling it
properly, like trying to request the GPIO more than once
2) the platform_device was preloaded with an irq number that differs
from what is determined when parsing the tree. This would happen if a
platform_device was created manually.

g.

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grygorii Strashko]

Hi All,

On 05/28/2014 12:03 PM, Grant Likely wrote:
> On Wed, May 28, 2014 at 9:49 AM, Chen-Yu Tsai <wens@csie.org> wrote:
>> On Wed, May 28, 2014 at 4:25 PM, Linus Walleij <linus.walleij@linaro.org> wrote:
>>> On Wed, May 28, 2014 at 9:18 AM, Lee Jones <lee.jones@linaro.org> wrote:
>>>> On Tue, 27 May 2014, Rob Herring wrote:
>>>>
>>>>> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
>>>>>> On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
>>>>>>> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>>>>>>>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>>>>>>>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>>>>>>>> moves resolving of the interrupt resources in platform_get_irq().
>>>>>>>> But this solution isn't complete because platform_get_irq_byname()
>>>>>>>> need to be modified the same way.
>>>>>>>>
>>>>>>>> Hence, fix it by adding interrupt resolution code at the
>>>>>>>> platform_get_irq_byname() function too.
>>>>>>>>
>>>>>>>> Cc: Russell King <linux@arm.linux.org.uk>
>>>>>>>> Cc: Rob Herring <robh@kernel.org>
>>>>>>>> Cc: Tony Lindgren <tony@atomide.com>
>>>>>>>> Cc: Grant Likely <grant.likely@linaro.org>
>>>>>>>> Cc: Thierry Reding <thierry.reding@gmail.com>
>>>>>>>>
>>>>>>>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>>>>>>
>>>>>>> Applied, Thanks.
>>>>>>
>>>>>> As of next-20150526, the ST u8500 Snowball board has been failing boot
>>>>>> in linux-next, and was bisected down to this patch (commit
>>>>>> ad69674e73a1 in -next).   Full boot failure attached.
>>>>>>
>>>>>> I have not dug any deeper, but can confirm that next-20140526 with
>>>>>> this patch reverted boots again on the snowball board.
>>>>>
>>>>> There's a patch on the list which fixes it. The problem is stmmac
>>>>> driver was expecting only one error code.
>>>>
>>>> Does Snowball even use stmmac?
>>>
>>> No.
>>>
>>> I don't get this...
>>
>> Log says musb is wrestling control over some pins with some other driver:
>>
>> [    1.441497] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
>> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
>> [    1.453369] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
>> status -22
>> [    1.460571] pinctrl-nomadik soc:pinctrl: could not request pin 256
>> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
>> [    1.472076] musb-hdrc musb-hdrc.0.auto: Error applying setting,
>> reverse things back
>> [    1.479827] HS USB OTG: no transceiver configured
>> [    1.484558] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed
>> with status -517
>> [    1.492309] platform musb-hdrc.0.auto: Driver musb-hdrc requests
>> probe deferral
>> [    1.500183] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
>> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
>> [    1.512023] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
>> status -22
>> [    1.519226] pinctrl-nomadik soc:pinctrl: could not request pin 256
>> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
>> [    1.530731] musb-ux500 musb-hdrc.0.auto: Error applying setting,
>> reverse things back
>> [    1.539184] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
>> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.1.auto
>> [    1.551025] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.1.auto)
>> status -22
>> [    1.558258] pinctrl-nomadik soc:pinctrl: could not request pin 256
>> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
>> [    1.569732] musb-hdrc musb-hdrc.1.auto: Error applying setting,
>> reverse things back
>> [    1.577453] HS USB OTG: no transceiver configured
>>
>> [ .. repeats until the end .. ]
>>
>> I think this is not related to this patch.
>
> The bisected patch causes platform_get_irq() to always parse the
> devicetree to obtain the irq instead of using a precalculated value in
> the platform_device. There are two possible scenarios for this problem
> that I can think of:
> 1) Platform_get_irq() is getting called multiple times (which would
> happen on a deferred probe) but the setup code isn't handling it
> properly, like trying to request the GPIO more than once
> 2) the platform_device was preloaded with an irq number that differs
> from what is determined when parsing the tree. This would happen if a
> platform_device was created manually.
>

Could anyone try attached patch? It has to improve situation, but it 
might not fix all problems (see my previous e-mail).

Regards,
-grygorii

--
 From 4a41912dba648c935982274966426fa430fd5aa4 Mon Sep 17 00:00:00 2001
From: Grygorii Strashko <grygorii.strashko@ti.com>
Date: Wed, 28 May 2014 12:53:34 +0300
Subject: [PATCH] mfd: ab8500: fix dt irq mapping

The AD8500 defines itself as interrupt-controller in DT,
but it doesn't assign DT node to IRQ domain when creates it.
As result, of_irq_xx() helpers don't work because they can't
find necessary IRQ domain.

Hence, fix it by assigning AD8500 core device DT node to IRQ
domain when it's created.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
  drivers/mfd/ab8500-core.c |    2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index a8ee4a3..cf2e6a1 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -591,7 +591,7 @@ static int ab8500_irq_init(struct ab8500 *ab8500, 
struct device_node *np)
  		num_irqs = AB8500_NR_IRQS;

  	/* If ->irq_base is zero this will give a linear mapping */
-	ab8500->domain = irq_domain_add_simple(NULL,
+	ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node,
  			num_irqs, 0,
  			&ab8500_irq_ops, ab8500);

-- 
1.7.9.5

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Kevin Hilman]

Grygorii Strashko <grygorii.strashko@ti.com> writes:

> Hi All,
>
> On 05/28/2014 12:03 PM, Grant Likely wrote:

[...]

>> The bisected patch causes platform_get_irq() to always parse the
>> devicetree to obtain the irq instead of using a precalculated value in
>> the platform_device. There are two possible scenarios for this problem
>> that I can think of:
>> 1) Platform_get_irq() is getting called multiple times (which would
>> happen on a deferred probe) but the setup code isn't handling it
>> properly, like trying to request the GPIO more than once
>> 2) the platform_device was preloaded with an irq number that differs
>> from what is determined when parsing the tree. This would happen if a
>> platform_device was created manually.
>>
>
> Could anyone try attached patch? It has to improve situation, but it
> might not fix all problems (see my previous e-mail).

I can confirm it makes the STE Snowball boot again on top of next-20150602.

> From 4a41912dba648c935982274966426fa430fd5aa4 Mon Sep 17 00:00:00 2001
> From: Grygorii Strashko <grygorii.strashko@ti.com>
> Date: Wed, 28 May 2014 12:53:34 +0300
> Subject: [PATCH] mfd: ab8500: fix dt irq mapping
>
> The AD8500 defines itself as interrupt-controller in DT,
> but it doesn't assign DT node to IRQ domain when creates it.
> As result, of_irq_xx() helpers don't work because they can't
> find necessary IRQ domain.
>
> Hence, fix it by assigning AD8500 core device DT node to IRQ
> domain when it's created.
>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

Tested-by: Kevin Hilman <khilman@linaro.org>

Kevin

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grant Likely]

On Mon, 02 Jun 2014 07:48:59 -0700, Kevin Hilman <khilman@linaro.org> wrote:
> Grygorii Strashko <grygorii.strashko@ti.com> writes:
> 
> > Hi All,
> >
> > On 05/28/2014 12:03 PM, Grant Likely wrote:
> 
> [...]
> 
> >> The bisected patch causes platform_get_irq() to always parse the
> >> devicetree to obtain the irq instead of using a precalculated value in
> >> the platform_device. There are two possible scenarios for this problem
> >> that I can think of:
> >> 1) Platform_get_irq() is getting called multiple times (which would
> >> happen on a deferred probe) but the setup code isn't handling it
> >> properly, like trying to request the GPIO more than once
> >> 2) the platform_device was preloaded with an irq number that differs
> >> from what is determined when parsing the tree. This would happen if a
> >> platform_device was created manually.
> >>
> >
> > Could anyone try attached patch? It has to improve situation, but it
> > might not fix all problems (see my previous e-mail).
> 
> I can confirm it makes the STE Snowball boot again on top of next-20150602.
> 
> > From 4a41912dba648c935982274966426fa430fd5aa4 Mon Sep 17 00:00:00 2001
> > From: Grygorii Strashko <grygorii.strashko@ti.com>
> > Date: Wed, 28 May 2014 12:53:34 +0300
> > Subject: [PATCH] mfd: ab8500: fix dt irq mapping
> >
> > The AD8500 defines itself as interrupt-controller in DT,
> > but it doesn't assign DT node to IRQ domain when creates it.
> > As result, of_irq_xx() helpers don't work because they can't
> > find necessary IRQ domain.
> >
> > Hence, fix it by assigning AD8500 core device DT node to IRQ
> > domain when it's created.
> >
> > Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> 
> Tested-by: Kevin Hilman <khilman@linaro.org>

So is that it, or were there other problems? If it is then you can add
my acked-by when applying.

Acked-by: Grant Likely <grant.likely@linaro.org>

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grygorii Strashko]

Hi,

On 06/03/2014 12:20 PM, Grant Likely wrote:
> On Mon, 02 Jun 2014 07:48:59 -0700, Kevin Hilman <khilman@linaro.org> wrote:
>> Grygorii Strashko <grygorii.strashko@ti.com> writes:
>>
>>> Hi All,
>>>
>>> On 05/28/2014 12:03 PM, Grant Likely wrote:
>>
>> [...]
>>
>>>> The bisected patch causes platform_get_irq() to always parse the
>>>> devicetree to obtain the irq instead of using a precalculated value in
>>>> the platform_device. There are two possible scenarios for this problem
>>>> that I can think of:
>>>> 1) Platform_get_irq() is getting called multiple times (which would
>>>> happen on a deferred probe) but the setup code isn't handling it
>>>> properly, like trying to request the GPIO more than once
>>>> 2) the platform_device was preloaded with an irq number that differs
>>>> from what is determined when parsing the tree. This would happen if a
>>>> platform_device was created manually.
>>>>
>>>
>>> Could anyone try attached patch? It has to improve situation, but it
>>> might not fix all problems (see my previous e-mail).
>>
>> I can confirm it makes the STE Snowball boot again on top of next-20150602.
>>
>>>  From 4a41912dba648c935982274966426fa430fd5aa4 Mon Sep 17 00:00:00 2001
>>> From: Grygorii Strashko <grygorii.strashko@ti.com>
>>> Date: Wed, 28 May 2014 12:53:34 +0300
>>> Subject: [PATCH] mfd: ab8500: fix dt irq mapping
>>>
>>> The AD8500 defines itself as interrupt-controller in DT,
>>> but it doesn't assign DT node to IRQ domain when creates it.
>>> As result, of_irq_xx() helpers don't work because they can't
>>> find necessary IRQ domain.
>>>
>>> Hence, fix it by assigning AD8500 core device DT node to IRQ
>>> domain when it's created.
>>>
>>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>
>> Tested-by: Kevin Hilman <khilman@linaro.org>

Thanks for testing it.

> 
> So is that it, or were there other problems? If it is then you can add

This is minimal solution and some sub-devices of ab8500 MFD may still 
not work.

For example, ab8500-debugfs may not work (ste-dbx5x0.dtsi):
	ab8500-debugfs {
		compatible = "stericsson,ab8500-debug";
	};

 and its DT definition may need to be updated to explicitly define IRQs,
smth like this:
	ab8500-debugfs {
		compatible = "stericsson,ab8500-debug";
		interrupts = <0 IRQ_TYPE_LEVEL_HIGH
			      111 IRQ_TYPE_LEVEL_HIGH>;
		interrupt-names = "IRQ_FIRST", "IRQ_LAST";
	};

> my acked-by when applying.
> 
> Acked-by: Grant Likely <grant.likely@linaro.org>
> 

I've reposted this patch already:
 https://lkml.org/lkml/2014/6/2/379

Regards,
-grygorii

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Linus Walleij]

On Wed, May 28, 2014 at 10:49 AM, Chen-Yu Tsai <wens@csie.org> wrote:

> Log says musb is wrestling control over some pins with some other driver:
>
> [    1.441497] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
> [    1.453369] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
> status -22
> [    1.460571] pinctrl-nomadik soc:pinctrl: could not request pin 256
> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
> [    1.472076] musb-hdrc musb-hdrc.0.auto: Error applying setting,
> reverse things back
> [    1.479827] HS USB OTG: no transceiver configured
> [    1.484558] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed
> with status -517
> [    1.492309] platform musb-hdrc.0.auto: Driver musb-hdrc requests
> probe deferral
> [    1.500183] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.0.auto
> [    1.512023] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.0.auto)
> status -22
> [    1.519226] pinctrl-nomadik soc:pinctrl: could not request pin 256
> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
> [    1.530731] musb-ux500 musb-hdrc.0.auto: Error applying setting,
> reverse things back
> [    1.539184] pinctrl-nomadik soc:pinctrl: pin GPIO256_AF28 already
> requested by a03e0000.usb_per5; cannot claim for musb-hdrc.1.auto
> [    1.551025] pinctrl-nomadik soc:pinctrl: pin-256 (musb-hdrc.1.auto)
> status -22
> [    1.558258] pinctrl-nomadik soc:pinctrl: could not request pin 256
> (GPIO256_AF28) from group usb_a_1  on device pinctrl-nomadik
> [    1.569732] musb-hdrc musb-hdrc.1.auto: Error applying setting,
> reverse things back
> [    1.577453] HS USB OTG: no transceiver configured
>
> [ .. repeats until the end .. ]
>
> I think this is not related to this patch.

No that is fixed i this patch:
http://marc.info/?l=linux-usb&m=140239049219096&w=2

Yours,
Linus Walleij

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grant Likely]

On Tue, 27 May 2014 19:37:00 -0500, Rob Herring <robh@kernel.org> wrote:
> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
> > On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
> >> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
> >>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
> >>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
> >>> moves resolving of the interrupt resources in platform_get_irq().
> >>> But this solution isn't complete because platform_get_irq_byname()
> >>> need to be modified the same way.
> >>>
> >>> Hence, fix it by adding interrupt resolution code at the
> >>> platform_get_irq_byname() function too.
> >>>
> >>> Cc: Russell King <linux@arm.linux.org.uk>
> >>> Cc: Rob Herring <robh@kernel.org>
> >>> Cc: Tony Lindgren <tony@atomide.com>
> >>> Cc: Grant Likely <grant.likely@linaro.org>
> >>> Cc: Thierry Reding <thierry.reding@gmail.com>
> >>>
> >>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> >>
> >> Applied, Thanks.
> >
> > As of next-20150526, the ST u8500 Snowball board has been failing boot
> > in linux-next, and was bisected down to this patch (commit
> > ad69674e73a1 in -next).   Full boot failure attached.
> >
> > I have not dug any deeper, but can confirm that next-20140526 with
> > this patch reverted boots again on the snowball board.
> 
> There's a patch on the list which fixes it. The problem is stmmac
> driver was expecting only one error code.

Can you send me a link to this patch? I cannot find it in my inbox.

g.

[PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()

[Grygorii Strashko]

Hi All,

On 05/28/2014 03:37 AM, Rob Herring wrote:
> On Tue, May 27, 2014 at 3:23 PM, Kevin Hilman <khilman@linaro.org> wrote:
>> On Fri, May 23, 2014 at 1:03 AM, Grant Likely <grant.likely@linaro.org> wrote:
>>> On Tue, 20 May 2014 13:42:02 +0300, Grygorii Strashko <grygorii.strashko@ti.com> wrote:
>>>> The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
>>>> "of/irq: do irq resolution in platform_get_irq" from Rob Herring -
>>>> moves resolving of the interrupt resources in platform_get_irq().
>>>> But this solution isn't complete because platform_get_irq_byname()
>>>> need to be modified the same way.
>>>>
>>>> Hence, fix it by adding interrupt resolution code at the
>>>> platform_get_irq_byname() function too.
>>>>
>>>> Cc: Russell King <linux@arm.linux.org.uk>
>>>> Cc: Rob Herring <robh@kernel.org>
>>>> Cc: Tony Lindgren <tony@atomide.com>
>>>> Cc: Grant Likely <grant.likely@linaro.org>
>>>> Cc: Thierry Reding <thierry.reding@gmail.com>
>>>>
>>>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>>
>>> Applied, Thanks.
>>
>> As of next-20150526, the ST u8500 Snowball board has been failing boot
>> in linux-next, and was bisected down to this patch (commit
>> ad69674e73a1 in -next).   Full boot failure attached.
>>
>> I have not dug any deeper, but can confirm that next-20140526 with
>> this patch reverted boots again on the snowball board.
> 
> There's a patch on the list which fixes it. The problem is stmmac
> driver was expecting only one error code.
> 

Seems root cause of problem is hidden inside MFD ab8500-core.c :(
And it's related to simulations supporting of DT and non-DT devices.

For example:
----- Log file contains lines
[    0.919677] ab8500-debug ab8500-debug.0: First irq not found, err -22
[    0.926147] ab8500-debug: probe of ab8500-debug.0 failed with error -22

DT definition of ab8500-debug is specified as following (ste-dbx5x0.dtsi):
	ab8500-debugfs {
		compatible = "stericsson,ab8500-debug";
	};

In code ab8500-debug is created using mfd_add_devices() API which fills
device's resources manually, but, in same time, It links ab8500-debug device
to DT node because MFD cell has of_compatible property set to:
 		.of_compatible = "stericsson,ab8500-debug",


Problem: both new versions of APIs platform_get_irq_byname() and
platform_get_irq() will fail to get IRQ.


Another problem is:
[    1.038909] abx5x0-usb ab8500-usb.0: Link status irq not found
- looking on it now - it should work


Best regards,
-grygorii