From: Hongwei Zhang <hongweiz@ami.com>
To: Andrew Jeffery <andrew@aj.id.au>,
Linus Walleij <linus.walleij@linaro.org>,
<linux-gpio@vger.kernel.org>
Cc: Hongwei Zhang <hongweiz@ami.com>, Joel Stanley <joel@jms.id.au>,
<linux-aspeed@lists.ozlabs.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: [v7 2/2] gpio: aspeed: Add SGPIO driver
Date: Tue, 20 Aug 2019 17:35:55 -0400 [thread overview]
Message-ID: <1566336955-31808-1-git-send-email-hongweiz@ami.com> (raw)
In-Reply-To: <1564603297-1391-1-git-send-email-hongweiz@ami.com>
Hello Linus,
Thanks for your review! I just submitted v8 to the list, please help to review it again.
Since you have already merged the dt-binding document [v7 1/2], and I don't have your
update to this file, so to avoid confusion, I only include the driver code in v8.
Regards,
--Hongwei
> From: Linus Walleij <linus.walleij@linaro.org>
> Sent: Wednesday, August 14, 2019 4:09 AM
> To: Hongwei Zhang
> Cc: Andrew Jeffery; open list:GPIO SUBSYSTEM; Joel Stanley; linux-aspeed; Bartosz Golaszewski;
> linux-kernel@vger.kernel.org; Linux ARM
> Subject: Re: [v7 2/2] gpio: aspeed: Add SGPIO driver
>
> Hi Hongwei,
>
> thanks for your patch!
>
> I have now merged the bindings so you only need to respin this patch.
>
> On Wed, Jul 31, 2019 at 10:02 PM Hongwei Zhang <hongweiz@ami.com> wrote:
>
> > Add SGPIO driver support for Aspeed AST2500 SoC.
> >
> > Signed-off-by: Hongwei Zhang <hongweiz@ami.com>
> > Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
>
> I guess I need to go with this, there are some minor things I still want to be fixed:
>
> > +static void __aspeed_sgpio_set(struct gpio_chip *gc, unsigned int
> > +offset, int val)
>
> I don't like __underscore_functions because their semantic is ambiguous.
>
done, please see v8.
> Rename this something like aspeed_sgpio_commit() or whatever best fits the actual use.
>
> > +static int aspeed_sgpio_setup_irqs(struct aspeed_sgpio *gpio,
> > + struct platform_device *pdev) {
> (...)
> > + rc = gpiochip_irqchip_add(&gpio->chip, &aspeed_sgpio_irqchip,
> > + 0, handle_bad_irq, IRQ_TYPE_NONE);
> (...)
> > + gpiochip_set_chained_irqchip(&gpio->chip, &aspeed_sgpio_irqchip,
> > + gpio->irq,
> > + aspeed_sgpio_irq_handler);
>
> We do not set up chained irqchips like this anymore, sorry.
>
> I am currently rewriting all existing chained drivers to pass an initialized irqchip when registering the
> whole gpio chip.
> See drivers/gpio/TODO.
>
> Here are examples:
> https://lore.kernel.org/linux-gpio/20190811080539.15647-1-linus.walleij@linaro.org/
> https://lore.kernel.org/linux-gpio/20190812132554.18313-1-linus.walleij@linaro.org/
>
done, please see v8.
> > + /* set all SGPIO pins as input (1). */
> > + memset(gpio->dir_in, 0xff, sizeof(gpio->dir_in));
>
> Do the irqchip set-up here, before adding the gpio_chip.
>
> > + rc = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
> > + if (rc < 0)
> > + return rc;
> > +
> > + return aspeed_sgpio_setup_irqs(gpio, pdev);
>
> Yours,
> Linus Walleij
prev parent reply other threads:[~2019-08-20 21:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-31 20:01 [v7 0/2] gpio: aspeed: Add SGPIO driver Hongwei Zhang
2019-07-31 20:01 ` [v7 1/2] dt-bindings: gpio: aspeed: Add SGPIO support Hongwei Zhang
2019-08-14 7:59 ` Linus Walleij
2019-07-31 20:01 ` [v7 2/2] gpio: aspeed: Add SGPIO driver Hongwei Zhang
2019-08-01 2:59 ` Andrew Jeffery
2019-08-14 8:09 ` Linus Walleij
2019-08-21 14:25 ` Hongwei Zhang
2019-08-20 21:35 ` Hongwei Zhang [this message]
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