diff mbox series

[1/2] pinctrl: stm32: fix bank io port number

Message ID 1531745857-5561-2-git-send-email-alexandre.torgue@st.com
State Changes Requested, archived
Headers show
Series STM32 pinctrl updates | expand

Commit Message

Alexandre TORGUE July 16, 2018, 12:57 p.m. UTC
In case the exti line is not in line with the bank number (that is the case
when there is an hole between two banks, for example GPIOK and then GPIOZ),
use "st,bank-ioport" DT property to get the right exti line.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

Comments

Rob Herring (Arm) July 20, 2018, 4:35 p.m. UTC | #1
On Mon, Jul 16, 2018 at 02:57:36PM +0200, Alexandre Torgue wrote:
> In case the exti line is not in line with the bank number (that is the case
> when there is an hole between two banks, for example GPIOK and then GPIOZ),
> use "st,bank-ioport" DT property to get the right exti line.
> 
> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> index 9a06e1f..60c678a 100644
> --- a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> @@ -55,6 +55,8 @@ Optional properties:
>     NOTE: If "gpio-ranges" is used for a gpio controller, all gpio-controller
>     have to use a "gpio-ranges" entry.
>     More details in Documentation/devicetree/bindings/gpio/gpio.txt.
> + - st,bank-ioport: should correspond to the EXTI IOport selection (EXTI line
> +   used to select GPIOs as interrupts).

ioport sounds like something else. Perhaps '-exti-line'?

>  
>  Example 1:
>  #include <dt-bindings/pinctrl/stm32f429-pinfunc.h>
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Alexandre TORGUE July 24, 2018, 4:07 p.m. UTC | #2
Hi Rob

On 07/20/2018 06:35 PM, Rob Herring wrote:
> On Mon, Jul 16, 2018 at 02:57:36PM +0200, Alexandre Torgue wrote:
>> In case the exti line is not in line with the bank number (that is the case
>> when there is an hole between two banks, for example GPIOK and then GPIOZ),
>> use "st,bank-ioport" DT property to get the right exti line.
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
>> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
>>
>> diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
>> index 9a06e1f..60c678a 100644
>> --- a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
>> +++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
>> @@ -55,6 +55,8 @@ Optional properties:
>>      NOTE: If "gpio-ranges" is used for a gpio controller, all gpio-controller
>>      have to use a "gpio-ranges" entry.
>>      More details in Documentation/devicetree/bindings/gpio/gpio.txt.
>> + - st,bank-ioport: should correspond to the EXTI IOport selection (EXTI line
>> +   used to select GPIOs as interrupts).
> 
> ioport sounds like something else. Perhaps '-exti-line'?

IOport is actually what is described in our datasheet. I could change it 
to -exti-line but I would prefer to match with the datasheet.

Regards
Alex
> 
>>   
>>   Example 1:
>>   #include <dt-bindings/pinctrl/stm32f429-pinfunc.h>
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Rob Herring (Arm) July 25, 2018, 2 p.m. UTC | #3
On Tue, Jul 24, 2018 at 10:07 AM Alexandre Torgue
<alexandre.torgue@st.com> wrote:
>
> Hi Rob
>
> On 07/20/2018 06:35 PM, Rob Herring wrote:
> > On Mon, Jul 16, 2018 at 02:57:36PM +0200, Alexandre Torgue wrote:
> >> In case the exti line is not in line with the bank number (that is the case
> >> when there is an hole between two banks, for example GPIOK and then GPIOZ),
> >> use "st,bank-ioport" DT property to get the right exti line.
> >>
> >> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
> >> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
> >>
> >> diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> >> index 9a06e1f..60c678a 100644
> >> --- a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> >> +++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> >> @@ -55,6 +55,8 @@ Optional properties:
> >>      NOTE: If "gpio-ranges" is used for a gpio controller, all gpio-controller
> >>      have to use a "gpio-ranges" entry.
> >>      More details in Documentation/devicetree/bindings/gpio/gpio.txt.
> >> + - st,bank-ioport: should correspond to the EXTI IOport selection (EXTI line
> >> +   used to select GPIOs as interrupts).
> >
> > ioport sounds like something else. Perhaps '-exti-line'?
>
> IOport is actually what is described in our datasheet. I could change it
> to -exti-line but I would prefer to match with the datasheet.

Okay.

Reviewed-by: Rob Herring <robh@kernel.org>
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Linus Walleij July 29, 2018, 8:02 p.m. UTC | #4
On Mon, Jul 16, 2018 at 2:57 PM Alexandre Torgue
<alexandre.torgue@st.com> wrote:

> In case the exti line is not in line with the bank number (that is the case
> when there is an hole between two banks, for example GPIOK and then GPIOZ),
> use "st,bank-ioport" DT property to get the right exti line.
>
> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

Patch applied with Rob's ACK.

Yours,
Linus Walleij
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diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
index 9a06e1f..60c678a 100644
--- a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
@@ -55,6 +55,8 @@  Optional properties:
    NOTE: If "gpio-ranges" is used for a gpio controller, all gpio-controller
    have to use a "gpio-ranges" entry.
    More details in Documentation/devicetree/bindings/gpio/gpio.txt.
+ - st,bank-ioport: should correspond to the EXTI IOport selection (EXTI line
+   used to select GPIOs as interrupts).
 
 Example 1:
 #include <dt-bindings/pinctrl/stm32f429-pinfunc.h>
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index dfed609..eb6ae14 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -73,6 +73,7 @@  struct stm32_gpio_bank {
 	struct fwnode_handle *fwnode;
 	struct irq_domain *domain;
 	u32 bank_nr;
+	u32 bank_ioport_nr;
 };
 
 struct stm32_pinctrl {
@@ -298,7 +299,7 @@  static int stm32_gpio_domain_activate(struct irq_domain *d,
 	struct stm32_gpio_bank *bank = d->host_data;
 	struct stm32_pinctrl *pctl = dev_get_drvdata(bank->gpio_chip.parent);
 
-	regmap_field_write(pctl->irqmux[irq_data->hwirq], bank->bank_nr);
+	regmap_field_write(pctl->irqmux[irq_data->hwirq], bank->bank_ioport_nr);
 	return 0;
 }
 
@@ -948,6 +949,7 @@  static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
 	struct device_node *np)
 {
 	struct stm32_gpio_bank *bank = &pctl->banks[pctl->nbanks];
+	int bank_ioport_nr;
 	struct pinctrl_gpio_range *range = &bank->range;
 	struct of_phandle_args args;
 	struct device *dev = pctl->dev;
@@ -998,12 +1000,17 @@  static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
 		pinctrl_add_gpio_range(pctl->pctl_dev,
 				       &pctl->banks[bank_nr].range);
 	}
+
+	if (of_property_read_u32(np, "st,bank-ioport", &bank_ioport_nr))
+		bank_ioport_nr = bank_nr;
+
 	bank->gpio_chip.base = bank_nr * STM32_GPIO_PINS_PER_BANK;
 
 	bank->gpio_chip.ngpio = npins;
 	bank->gpio_chip.of_node = np;
 	bank->gpio_chip.parent = dev;
 	bank->bank_nr = bank_nr;
+	bank->bank_ioport_nr = bank_ioport_nr;
 	spin_lock_init(&bank->lock);
 
 	/* create irq hierarchical domain */