gpio: generic: factor into gpio_chip struct
The separate struct bgpio_chip has been a pain to handle, both
by being confusingly similar in name to struct gpio_chip and
for being contained inside a struct so that struct gpio_chip
is contained in a struct contained in a struct, making several
steps of dereferencing necessary.
Make things simpler: include the fields directly into
<linux/gpio/driver.h>, #ifdef:ed for CONFIG_GENERIC_GPIO, and
get rid of the <linux/basic_mmio_gpio.h> altogether. Prefix
some of the member variables with bgpio_* and add proper
kerneldoc while we're at it.
Modify all users to handle the change and use a struct
gpio_chip directly. And while we're at it: replace all
container_of() dereferencing by gpiochip_get_data() and
registering the gpio_chip with gpiochip_add_data().
Cc: arm@kernel.org
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Olof Johansson <olof@lixom.net>
Cc: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Cc: Rabin Vincent <rabin@rab.in>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-clps711x.c b/drivers/gpio/gpio-clps711x.c
index b6908f1..c84f955 100644
--- a/drivers/gpio/gpio-clps711x.c
+++ b/drivers/gpio/gpio-clps711x.c
@@ -10,24 +10,23 @@
*/
#include <linux/err.h>
-#include <linux/gpio.h>
#include <linux/module.h>
-#include <linux/basic_mmio_gpio.h>
+#include <linux/gpio/driver.h>
#include <linux/platform_device.h>
static int clps711x_gpio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
void __iomem *dat, *dir;
- struct bgpio_chip *bgc;
+ struct gpio_chip *gc;
struct resource *res;
int err, id = np ? of_alias_get_id(np, "gpio") : pdev->id;
if ((id < 0) || (id > 4))
return -ENODEV;
- bgc = devm_kzalloc(&pdev->dev, sizeof(*bgc), GFP_KERNEL);
- if (!bgc)
+ gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
+ if (!gc)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -43,11 +42,11 @@
switch (id) {
case 3:
/* PORTD is inverted logic for direction register */
- err = bgpio_init(bgc, &pdev->dev, 1, dat, NULL, NULL,
+ err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
NULL, dir, 0);
break;
default:
- err = bgpio_init(bgc, &pdev->dev, 1, dat, NULL, NULL,
+ err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
dir, NULL, 0);
break;
}
@@ -58,24 +57,25 @@
switch (id) {
case 4:
/* PORTE is 3 lines only */
- bgc->gc.ngpio = 3;
+ gc->ngpio = 3;
break;
default:
break;
}
- bgc->gc.base = id * 8;
- bgc->gc.owner = THIS_MODULE;
- platform_set_drvdata(pdev, bgc);
+ gc->base = id * 8;
+ gc->owner = THIS_MODULE;
+ platform_set_drvdata(pdev, gc);
- return gpiochip_add(&bgc->gc);
+ return gpiochip_add_data(gc, NULL);
}
static int clps711x_gpio_remove(struct platform_device *pdev)
{
- struct bgpio_chip *bgc = platform_get_drvdata(pdev);
+ struct gpio_chip *gc = platform_get_drvdata(pdev);
- return bgpio_remove(bgc);
+ gpiochip_remove(gc);
+ return 0;
}
static const struct of_device_id __maybe_unused clps711x_gpio_ids[] = {