linux-kernel - [PATCH v1 1/1] gpio: exar: Allow IO port access

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Date:   Mon, 17 Oct 2022 20:06:00 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Qingtao Cao <qingtao.cao.au@...il.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH v1 1/1] gpio: exar: Allow IO port access

It's possible that PCI device can provide an IO port resource for
the device. regmap MMIO currently uses MMIO by default. With an
additional flag we enable support for IO port accesses.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpio-exar.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c
index 482f678c893e..df1bdaae441c 100644
--- a/drivers/gpio/gpio-exar.c
+++ b/drivers/gpio/gpio-exar.c
@@ -141,6 +141,7 @@ static const struct regmap_config exar_regmap_config = {
 	.name		= "exar-gpio",
 	.reg_bits	= 16,
 	.val_bits	= 8,
+	.io_port	= true,
 };
 
 static int gpio_exar_probe(struct platform_device *pdev)
-- 
2.35.1