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-ge.c b/drivers/gpio/gpio-ge.c
index f9ac3f3..cbbec83 100644
--- a/drivers/gpio/gpio-ge.c
+++ b/drivers/gpio/gpio-ge.c
@@ -24,7 +24,7 @@
#include <linux/of_gpio.h>
#include <linux/of_address.h>
#include <linux/module.h>
-#include <linux/basic_mmio_gpio.h>
+#include <linux/gpio/driver.h>
#define GEF_GPIO_DIRECT 0x00
#define GEF_GPIO_IN 0x04
@@ -55,19 +55,19 @@
{
const struct of_device_id *of_id =
of_match_device(gef_gpio_ids, &pdev->dev);
- struct bgpio_chip *bgc;
+ struct gpio_chip *gc;
void __iomem *regs;
int ret;
- bgc = devm_kzalloc(&pdev->dev, sizeof(*bgc), GFP_KERNEL);
- if (!bgc)
+ gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
+ if (!gc)
return -ENOMEM;
regs = of_iomap(pdev->dev.of_node, 0);
if (!regs)
return -ENOMEM;
- ret = bgpio_init(bgc, &pdev->dev, 4, regs + GEF_GPIO_IN,
+ ret = bgpio_init(gc, &pdev->dev, 4, regs + GEF_GPIO_IN,
regs + GEF_GPIO_OUT, NULL, NULL,
regs + GEF_GPIO_DIRECT, BGPIOF_BIG_ENDIAN_BYTE_ORDER);
if (ret) {
@@ -76,20 +76,20 @@
}
/* Setup pointers to chip functions */
- bgc->gc.label = devm_kstrdup(&pdev->dev, pdev->dev.of_node->full_name,
+ gc->label = devm_kstrdup(&pdev->dev, pdev->dev.of_node->full_name,
GFP_KERNEL);
- if (!bgc->gc.label) {
+ if (!gc->label) {
ret = -ENOMEM;
goto err0;
}
- bgc->gc.base = -1;
- bgc->gc.ngpio = (u16)(uintptr_t)of_id->data;
- bgc->gc.of_gpio_n_cells = 2;
- bgc->gc.of_node = pdev->dev.of_node;
+ gc->base = -1;
+ gc->ngpio = (u16)(uintptr_t)of_id->data;
+ gc->of_gpio_n_cells = 2;
+ gc->of_node = pdev->dev.of_node;
/* This function adds a memory mapped GPIO chip */
- ret = gpiochip_add(&bgc->gc);
+ ret = gpiochip_add_data(gc, NULL);
if (ret)
goto err0;