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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sat, 21 Nov 2015 01:37:04 +0900
From:	Chanwoo Choi <cwchoi00@...il.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	Tony Lindgren <tony@...mide.com>, Rob Herring <robh+dt@...nel.org>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] extcon: palmas: add support for using VBUSDET output

Hi,

On Sat, Nov 21, 2015 at 12:05 AM, Chanwoo Choi <cwchoi00@...il.com> wrote:
> Hi Felipe,
>
> On Fri, Nov 20, 2015 at 11:37 PM, Felipe Balbi <balbi@...com> wrote:
>>
>> Hi Chanwoo,
>>
>> Chanwoo Choi <cw00.choi@...sung.com> writes:
>>> Hi Felipe,
>>>
>>> On 2015년 11월 20일 14:33, Chanwoo Choi wrote:
>>>> Hi Felipe,
>>>>
>>>> Looks good to me. But I have one comment.
>>>>
>>>> On 2015년 11월 13일 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@...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@...r.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-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/