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Message-ID: <12302039.O9o76ZdvQC@radijator>
Date: Wed, 27 Sep 2023 14:54:32 +0200
From: Duje Mihanović <duje.mihanovic@...le.hr>
To: Andy Shevchenko <andy@...nel.org>
Cc: Daniel Mack <daniel@...que.org>,
Haojian Zhuang <haojian.zhuang@...il.com>,
Robert Jarzmik <robert.jarzmik@...e.fr>,
Russell King <linux@...linux.org.uk>,
Alan Stern <stern@...land.harvard.edu>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-usb@...r.kernel.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH RFC v2 5/6] ARM: pxa: Convert Spitz hsync to GPIO descriptors
On Tuesday, September 26, 2023 6:19:23 PM CEST Andy Shevchenko wrote:
> On Tue, Sep 26, 2023 at 05:46:26PM +0200, Duje Mihanović wrote:
> > gpiod_add_lookup_table(&spitz_ads7846_gpio_table);
> > gpiod_add_lookup_table(&spitz_spi_gpio_table);
> >
> > + hsync = gpiod_get(NULL, "hsync", GPIOD_IN);
> > + if (IS_ERR(hsync)) {
> > + pr_err("Failed to get hsync GPIO: %ld\n", PTR_ERR(hsync));
> > + return;
> > + }
> >
> > pxa2xx_set_spi_info(2, &spitz_spi_info);
> > spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices));
>
> Yeah, but the question is, if GPIO request fails, can we instantiate at
least one device and move on?
I see. If the touchscreen is the first out of 3 devices in that array, would
something like this do:
spi_register_board_info(ARRAY_AND_SIZE(&spitz_spi_devices[1]));
Regards,
Duje
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