Re: [PATCH] extcon: palmas: add support for using VBUSDET output

From: Chanwoo Choi
Date: Fri Nov 20 2015 - 10:05:19 EST


Hi Felipe,

On Fri, Nov 20, 2015 at 11:37 PM, Felipe Balbi <balbi@xxxxxx> wrote:
>
> Hi Chanwoo,
>
> Chanwoo Choi <cw00.choi@xxxxxxxxxxx> writes:
>> Hi Felipe,
>>
>> On 2015ë 11ì 20ì 14:33, Chanwoo Choi wrote:
>>> Hi Felipe,
>>>
>>> Looks good to me. But I have one comment.
>>>
>>> On 2015ë 11ì 13ì 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@xxxxxx>
>>>> ---
>>>> 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
>>> --
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>>
>> 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
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