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authorLinus Walleij <linus.walleij@linaro.org>2015-12-04 16:02:58 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-01-05 13:21:00 +0300
commit0f4630f3720e7e6e921bf525c8357fea7ef3dbab (patch)
tree61c1904593d1ee424464c2d57668ba0fd2fbcbb4 /drivers/gpio/gpio-xgene-sb.c
parent3208b0f0c010b26e4d461a3bca59989d03ed9087 (diff)
downloadlinux-0f4630f3720e7e6e921bf525c8357fea7ef3dbab.tar.xz
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>
Diffstat (limited to 'drivers/gpio/gpio-xgene-sb.c')
-rw-r--r--drivers/gpio/gpio-xgene-sb.c40
1 files changed, 16 insertions, 24 deletions
diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c
index d57068b9083e..282004deb5d4 100644
--- a/drivers/gpio/gpio-xgene-sb.c
+++ b/drivers/gpio/gpio-xgene-sb.c
@@ -23,10 +23,8 @@
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/of_gpio.h>
-#include <linux/gpio.h>
#include <linux/gpio/driver.h>
#include <linux/acpi.h>
-#include <linux/basic_mmio_gpio.h>
#include "gpiolib.h"
@@ -43,38 +41,31 @@
/**
* struct xgene_gpio_sb - GPIO-Standby private data structure.
- * @bgc: memory-mapped GPIO controllers.
+ * @gc: memory-mapped GPIO controllers.
* @irq: Mapping GPIO pins and interrupt number
* nirq: Number of GPIO pins that supports interrupt
*/
struct xgene_gpio_sb {
- struct bgpio_chip bgc;
+ struct gpio_chip gc;
u32 *irq;
u32 nirq;
};
-static inline struct xgene_gpio_sb *to_xgene_gpio_sb(struct gpio_chip *gc)
-{
- struct bgpio_chip *bgc = to_bgpio_chip(gc);
-
- return container_of(bgc, struct xgene_gpio_sb, bgc);
-}
-
-static void xgene_gpio_set_bit(struct bgpio_chip *bgc, void __iomem *reg, u32 gpio, int val)
+static void xgene_gpio_set_bit(struct gpio_chip *gc, void __iomem *reg, u32 gpio, int val)
{
u32 data;
- data = bgc->read_reg(reg);
+ data = gc->read_reg(reg);
if (val)
data |= GPIO_MASK(gpio);
else
data &= ~GPIO_MASK(gpio);
- bgc->write_reg(reg, data);
+ gc->write_reg(reg, data);
}
static int apm_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio)
{
- struct xgene_gpio_sb *priv = to_xgene_gpio_sb(gc);
+ struct xgene_gpio_sb *priv = gpiochip_get_data(gc);
if (priv->irq[gpio])
return priv->irq[gpio];
@@ -99,15 +90,15 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
if (IS_ERR(regs))
return PTR_ERR(regs);
- ret = bgpio_init(&priv->bgc, &pdev->dev, 4,
+ ret = bgpio_init(&priv->gc, &pdev->dev, 4,
regs + MPA_GPIO_IN_ADDR,
regs + MPA_GPIO_OUT_ADDR, NULL,
regs + MPA_GPIO_OE_ADDR, NULL, 0);
if (ret)
return ret;
- priv->bgc.gc.to_irq = apm_gpio_sb_to_irq;
- priv->bgc.gc.ngpio = XGENE_MAX_GPIO_DS;
+ priv->gc.to_irq = apm_gpio_sb_to_irq;
+ priv->gc.ngpio = XGENE_MAX_GPIO_DS;
priv->nirq = XGENE_MAX_GPIO_DS_IRQ;
@@ -118,14 +109,14 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
for (i = 0; i < priv->nirq; i++) {
priv->irq[default_lines[i]] = platform_get_irq(pdev, i);
- xgene_gpio_set_bit(&priv->bgc, regs + MPA_GPIO_SEL_LO,
+ xgene_gpio_set_bit(&priv->gc, regs + MPA_GPIO_SEL_LO,
default_lines[i] * 2, 1);
- xgene_gpio_set_bit(&priv->bgc, regs + MPA_GPIO_INT_LVL, i, 1);
+ xgene_gpio_set_bit(&priv->gc, regs + MPA_GPIO_INT_LVL, i, 1);
}
platform_set_drvdata(pdev, priv);
- ret = gpiochip_add(&priv->bgc.gc);
+ ret = gpiochip_add_data(&priv->gc, priv);
if (ret)
dev_err(&pdev->dev, "failed to register X-Gene GPIO Standby driver\n");
else
@@ -133,7 +124,7 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
if (priv->nirq > 0) {
/* Register interrupt handlers for gpio signaled acpi events */
- acpi_gpiochip_request_interrupts(&priv->bgc.gc);
+ acpi_gpiochip_request_interrupts(&priv->gc);
}
return ret;
@@ -144,10 +135,11 @@ static int xgene_gpio_sb_remove(struct platform_device *pdev)
struct xgene_gpio_sb *priv = platform_get_drvdata(pdev);
if (priv->nirq > 0) {
- acpi_gpiochip_free_interrupts(&priv->bgc.gc);
+ acpi_gpiochip_free_interrupts(&priv->gc);
}
- return bgpio_remove(&priv->bgc);
+ gpiochip_remove(&priv->gc);
+ return 0;
}
static const struct of_device_id xgene_gpio_sb_of_match[] = {