linux-kernel - Re: [PATCH v5 1/3] gpio: designware: convert device node to fwnode

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Date:	Fri, 11 Mar 2016 08:48:09 +0800
From:	Jiang Qiu <qiujiang@...wei.com>
To:	Andy Shevchenko <andy.shevchenko@...il.com>,
	Alan Tull <delicious.quinoa@...il.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	<linuxarm@...wei.com>, <haifeng.wei@...wei.com>,
	<charles.chenxin@...wei.com>
Subject: Re: [PATCH v5 1/3] gpio: designware: convert device node to fwnode

在 2016/3/11 4:27, Andy Shevchenko 写道:
> On Thu, Mar 10, 2016 at 9:09 PM, Alan Tull <delicious.quinoa@...il.com> wrote:
>> On Fri, Mar 4, 2016 at 1:44 AM, qiujiang <qiujiang@...wei.com> wrote:
>>> This patch converts device node to fwnode in
>>> dwapb_port_property for designware gpio driver,
>>> so as to provide a unified data structure for DT
>>> and ACPI bindings.
>>>
>>> Acked-by: Andy Shevchenko <andy.shevchenko@...il.com>
>>> Signed-off-by: qiujiang <qiujiang@...wei.com>
>>> @@ -496,18 +492,19 @@ dwapb_gpio_get_pdata_of(struct device *dev)
>>>                  * Only port A can provide interrupts in all configurations of
>>>                  * the IP.
>>>                  */
>>> -               if (pp->idx == 0 &&
>>> -                   of_property_read_bool(port_np, "interrupt-controller")) {
>>> -                       pp->irq = irq_of_parse_and_map(port_np, 0);
>>> +               if (dev->of_node && pp->idx == 0 &&
>>> +                       of_property_read_bool(to_of_node(fwnode),
>>> +                               "interrupt-controller")) {
>> Hi Qiujiang,
>>
>> Is there a reason to use "of_property_read_bool" here instead of
>> "device_property_read_bool" or similar?
> Yeah, this patch looks unfinished.
>
> This should be
>      if (pp->idx == 0 &&  fwnode_property_read_bool(fwnode,
> "interrupt-controller")) {
Yes, agreed, "to_of_node" will never appear in this patch : )
>> Alan
>>
>>> +                       pp->irq = irq_of_parse_and_map(to_of_node(fwnode), 0);
> But here should be common method called which takes fwnode on input.
Agreed.
>
>>>                         if (!pp->irq) {
>>>                                 dev_warn(dev, "no irq for bank %s\n",
>>> -                                        port_np->full_name);
>>> +                                        to_of_node(fwnode)->full_name);
>>>                         }
>>>                 }
>>>
>>>                 pp->irq_shared  = false;
>>>                 pp->gpio_base   = -1;
>>> -               pp->name        = port_np->full_name;
>>> +               pp->name        = to_of_node(fwnode)->full_name;
> Also those two should be device property source agnostic. That's what
> I tried to tell earlier.
Agreed.
Thanks, Jiang