extcon: palmas: add support for using VBUSDET output
diff mbox

Message ID 564EB332.5090406@samsung.com
State New
Headers show

Commit Message

Chanwoo Choi Nov. 20, 2015, 5:44 a.m. UTC
Hi Felipe,

On 2015? 11? 20? 14:33, Chanwoo Choi wrote:
> Hi Felipe,
> 
> Looks good to me. But I have one comment.
> 
> On 2015? 11? 13? 02:57, Felipe Balbi wrote:
>> TPS659038 can remux its GPIO_1 as VBUSDET output,
>> which can be tied to a SoC GPIO and used as a VBUS
>> interrupt.
>>
>> Beagle X15 uses that, in fact, and without it, I
>> could not get USB peripheral working with that
>> board.
>>
>> Signed-off-by: Felipe Balbi <balbi@ti.com>
>> ---
>>  drivers/extcon/extcon-palmas.c | 22 ++++++++++++++++++++--
>>  1 file changed, 20 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>> index 93c30a885740..7985d092c069 100644
>> --- a/drivers/extcon/extcon-palmas.c
>> +++ b/drivers/extcon/extcon-palmas.c
>> @@ -296,10 +296,28 @@ static int palmas_usb_probe(struct platform_device *pdev)
>>  	}
>>  
>>  	if (palmas_usb->enable_vbus_detection) {
>> +		int irq = platform_get_irq(pdev, 0);
>> +
>> +		if (irq > 0) {
>> +			/* remux GPIO_1 as VBUSDET */
>> +			status = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
>> +					PALMAS_PRIMARY_SECONDARY_PAD1,
>> +					PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
>> +					(1 << 3));
> 
> PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT is appropriate instead of using '3'.
> Also, I don't recommend the over line 80. The everything else is good
> 
> 
>> +			if (status < 0) {
>> +				dev_err(&pdev->dev, "can't remux GPIO1\n");
>> +				return status;
>> +			}
>> +
>> +			palmas_usb->vbus_irq = irq;
>> +		} else {
>> +			irq = regmap_irq_get_virq(palmas->irq_data,
>> +					PALMAS_VBUS_IRQ);
>> +			palmas_usb->vbus_irq = irq;
>> +		}
>> +
>>  		palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
>>  						       PALMAS_VBUS_OTG_IRQ);
>> -		palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
>> -							   PALMAS_VBUS_IRQ);
>>  		status = devm_request_threaded_irq(palmas_usb->dev,
>>  				palmas_usb->vbus_irq, NULL,
>>  				palmas_vbus_irq_handler,
>>
> 
> Thanks,
> Chanwoo Choi
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 

If you are OK about following patch, I'll apply it on extcon branch.

Comments

Felipe Balbi Nov. 20, 2015, 2:37 p.m. UTC | #1
Hi Chanwoo,

Chanwoo Choi <cw00.choi@samsung.com> writes:
> Hi Felipe,
>
> On 2015? 11? 20? 14:33, Chanwoo Choi wrote:
>> Hi Felipe,
>> 
>> Looks good to me. But I have one comment.
>> 
>> On 2015? 11? 13? 02:57, Felipe Balbi wrote:
>>> TPS659038 can remux its GPIO_1 as VBUSDET output,
>>> which can be tied to a SoC GPIO and used as a VBUS
>>> interrupt.
>>>
>>> Beagle X15 uses that, in fact, and without it, I
>>> could not get USB peripheral working with that
>>> board.
>>>
>>> Signed-off-by: Felipe Balbi <balbi@ti.com>
>>> ---
>>>  drivers/extcon/extcon-palmas.c | 22 ++++++++++++++++++++--
>>>  1 file changed, 20 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>>> index 93c30a885740..7985d092c069 100644
>>> --- a/drivers/extcon/extcon-palmas.c
>>> +++ b/drivers/extcon/extcon-palmas.c
>>> @@ -296,10 +296,28 @@ static int palmas_usb_probe(struct platform_device *pdev)
>>>  	}
>>>  
>>>  	if (palmas_usb->enable_vbus_detection) {
>>> +		int irq = platform_get_irq(pdev, 0);
>>> +
>>> +		if (irq > 0) {
>>> +			/* remux GPIO_1 as VBUSDET */
>>> +			status = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
>>> +					PALMAS_PRIMARY_SECONDARY_PAD1,
>>> +					PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
>>> +					(1 << 3));
>> 
>> PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT is appropriate instead of
>> using '3'.

good point :-)

>>> +			if (status < 0) {
>>> +				dev_err(&pdev->dev, "can't remux GPIO1\n");
>>> +				return status;
>>> +			}
>>> +
>>> +			palmas_usb->vbus_irq = irq;
>>> +		} else {
>>> +			irq = regmap_irq_get_virq(palmas->irq_data,
>>> +					PALMAS_VBUS_IRQ);
>>> +			palmas_usb->vbus_irq = irq;
>>> +		}
>>> +
>>>  		palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
>>>  						       PALMAS_VBUS_OTG_IRQ);
>>> -		palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
>>> -							   PALMAS_VBUS_IRQ);
>>>  		status = devm_request_threaded_irq(palmas_usb->dev,
>>>  				palmas_usb->vbus_irq, NULL,
>>>  				palmas_vbus_irq_handler,
>>>
>> 
>> Thanks,
>> Chanwoo Choi
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/
>> 
>
> If you are OK about following patch, I'll apply it on extcon branch.

that's perfect, thanks for fixing it :-)
Chanwoo Choi Nov. 20, 2015, 3:05 p.m. UTC | #2
Hi Felipe,

On Fri, Nov 20, 2015 at 11:37 PM, Felipe Balbi <balbi@ti.com> wrote:
>
> Hi Chanwoo,
>
> Chanwoo Choi <cw00.choi@samsung.com> writes:
>> Hi Felipe,
>>
>> On 2015? 11? 20? 14:33, Chanwoo Choi wrote:
>>> Hi Felipe,
>>>
>>> Looks good to me. But I have one comment.
>>>
>>> On 2015? 11? 13? 02:57, Felipe Balbi wrote:
>>>> TPS659038 can remux its GPIO_1 as VBUSDET output,
>>>> which can be tied to a SoC GPIO and used as a VBUS
>>>> interrupt.
>>>>
>>>> Beagle X15 uses that, in fact, and without it, I
>>>> could not get USB peripheral working with that
>>>> board.
>>>>
>>>> Signed-off-by: Felipe Balbi <balbi@ti.com>
>>>> ---
>>>>  drivers/extcon/extcon-palmas.c | 22 ++++++++++++++++++++--
>>>>  1 file changed, 20 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>>>> index 93c30a885740..7985d092c069 100644
>>>> --- a/drivers/extcon/extcon-palmas.c
>>>> +++ b/drivers/extcon/extcon-palmas.c
>>>> @@ -296,10 +296,28 @@ static int palmas_usb_probe(struct platform_device *pdev)
>>>>     }
>>>>
>>>>     if (palmas_usb->enable_vbus_detection) {
>>>> +           int irq = platform_get_irq(pdev, 0);
>>>> +
>>>> +           if (irq > 0) {
>>>> +                   /* remux GPIO_1 as VBUSDET */
>>>> +                   status = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
>>>> +                                   PALMAS_PRIMARY_SECONDARY_PAD1,
>>>> +                                   PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
>>>> +                                   (1 << 3));
>>>
>>> PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT is appropriate instead of
>>> using '3'.
>
> good point :-)
>
>>>> +                   if (status < 0) {
>>>> +                           dev_err(&pdev->dev, "can't remux GPIO1\n");
>>>> +                           return status;
>>>> +                   }
>>>> +
>>>> +                   palmas_usb->vbus_irq = irq;
>>>> +           } else {
>>>> +                   irq = regmap_irq_get_virq(palmas->irq_data,
>>>> +                                   PALMAS_VBUS_IRQ);
>>>> +                   palmas_usb->vbus_irq = irq;
>>>> +           }
>>>> +
>>>>             palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
>>>>                                                    PALMAS_VBUS_OTG_IRQ);
>>>> -           palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
>>>> -                                                      PALMAS_VBUS_IRQ);
>>>>             status = devm_request_threaded_irq(palmas_usb->dev,
>>>>                             palmas_usb->vbus_irq, NULL,
>>>>                             palmas_vbus_irq_handler,
>>>>
>>>
>>> Thanks,
>>> Chanwoo Choi
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>> Please read the FAQ at  http://www.tux.org/lkml/
>>>
>>
>> If you are OK about following patch, I'll apply it on extcon branch.
>
> that's perfect, thanks for fixing it :-)

Applied it.

Thanks,
Chanwoo Choi
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Chanwoo Choi Nov. 20, 2015, 4:37 p.m. UTC | #3
Hi,

On Sat, Nov 21, 2015 at 12:05 AM, Chanwoo Choi <cwchoi00@gmail.com> wrote:
> Hi Felipe,
>
> On Fri, Nov 20, 2015 at 11:37 PM, Felipe Balbi <balbi@ti.com> wrote:
>>
>> Hi Chanwoo,
>>
>> Chanwoo Choi <cw00.choi@samsung.com> writes:
>>> Hi Felipe,
>>>
>>> On 2015? 11? 20? 14:33, Chanwoo Choi wrote:
>>>> Hi Felipe,
>>>>
>>>> Looks good to me. But I have one comment.
>>>>
>>>> On 2015? 11? 13? 02:57, Felipe Balbi wrote:
>>>>> TPS659038 can remux its GPIO_1 as VBUSDET output,
>>>>> which can be tied to a SoC GPIO and used as a VBUS
>>>>> interrupt.
>>>>>
>>>>> Beagle X15 uses that, in fact, and without it, I
>>>>> could not get USB peripheral working with that
>>>>> board.
>>>>>
>>>>> Signed-off-by: Felipe Balbi <balbi@ti.com>
>>>>> ---
>>>>>  drivers/extcon/extcon-palmas.c | 22 ++++++++++++++++++++--
>>>>>  1 file changed, 20 insertions(+), 2 deletions(-)
>>>>>
>>>>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>>>>> index 93c30a885740..7985d092c069 100644
>>>>> --- a/drivers/extcon/extcon-palmas.c
>>>>> +++ b/drivers/extcon/extcon-palmas.c
>>>>> @@ -296,10 +296,28 @@ static int palmas_usb_probe(struct platform_device *pdev)
>>>>>     }
>>>>>
>>>>>     if (palmas_usb->enable_vbus_detection) {
>>>>> +           int irq = platform_get_irq(pdev, 0);
>>>>> +
>>>>> +           if (irq > 0) {
>>>>> +                   /* remux GPIO_1 as VBUSDET */
>>>>> +                   status = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
>>>>> +                                   PALMAS_PRIMARY_SECONDARY_PAD1,
>>>>> +                                   PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
>>>>> +                                   (1 << 3));
>>>>
>>>> PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT is appropriate instead of
>>>> using '3'.
>>
>> good point :-)
>>
>>>>> +                   if (status < 0) {
>>>>> +                           dev_err(&pdev->dev, "can't remux GPIO1\n");
>>>>> +                           return status;
>>>>> +                   }
>>>>> +
>>>>> +                   palmas_usb->vbus_irq = irq;
>>>>> +           } else {
>>>>> +                   irq = regmap_irq_get_virq(palmas->irq_data,
>>>>> +                                   PALMAS_VBUS_IRQ);
>>>>> +                   palmas_usb->vbus_irq = irq;
>>>>> +           }
>>>>> +
>>>>>             palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
>>>>>                                                    PALMAS_VBUS_OTG_IRQ);
>>>>> -           palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
>>>>> -                                                      PALMAS_VBUS_IRQ);
>>>>>             status = devm_request_threaded_irq(palmas_usb->dev,
>>>>>                             palmas_usb->vbus_irq, NULL,
>>>>>                             palmas_vbus_irq_handler,
>>>>>
>>>>
>>>> Thanks,
>>>> Chanwoo Choi
>>>> --
>>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>>>> the body of a message to majordomo@vger.kernel.org
>>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>>> Please read the FAQ at  http://www.tux.org/lkml/
>>>>
>>>
>>> If you are OK about following patch, I'll apply it on extcon branch.
>>
>> that's perfect, thanks for fixing it :-)
>
> Applied it.

Please ignore this reply about applies because I need to discuss about it.

Thanks,
Chanwoo Choi
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch
diff mbox

diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 93c30a885740..f601370c9466 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -296,10 +296,29 @@  static int palmas_usb_probe(struct platform_device *pdev)
 	}
 
 	if (palmas_usb->enable_vbus_detection) {
+		int irq = platform_get_irq(pdev, 0);
+
+		if (irq > 0) {
+			/* remux GPIO_1 as VBUSDET */
+			status = palmas_update_bits(palmas,
+				PALMAS_PU_PD_OD_BASE,
+				PALMAS_PRIMARY_SECONDARY_PAD1,
+				PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
+				(1 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT));
+			if (status < 0) {
+				dev_err(&pdev->dev, "can't remux GPIO1\n");
+				return status;
+			}
+
+			palmas_usb->vbus_irq = irq;
+		} else {
+			irq = regmap_irq_get_virq(palmas->irq_data,
+					PALMAS_VBUS_IRQ);
+			palmas_usb->vbus_irq = irq;
+		}
+
 		palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
 						       PALMAS_VBUS_OTG_IRQ);
-		palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
-							   PALMAS_VBUS_IRQ);
 		status = devm_request_threaded_irq(palmas_usb->dev,
 				palmas_usb->vbus_irq, NULL,
 				palmas_vbus_irq_handler,