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gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq 

This function actually operates on a gpio_chip, so its prefix should
reflect that fact for consistency with other functions defined in
gpio/driver.h.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Alexandre Courbot 2014-10-23 17:27:07 +09:00 committed by Linus Walleij
parent ee2a9f7f06
commit e3a2e87893
16 changed files with 41 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/gpio/driver.txt
View File

@ -158,12 +158,12 @@ Locking IRQ usage
Input GPIOs can be used as IRQ signals. When this happens, a driver is requested
to mark the GPIO as being used as an IRQ:
int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
This will prevent the use of non-irq related GPIO APIs until the GPIO IRQ lock
is released:
void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset)
void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset)
When implementing an irqchip inside a GPIO driver, these two functions should
typically be called in the .startup() and .shutdown() callbacks from the

4
drivers/gpio/gpio-bcm-kona.c
View File

@ -470,7 +470,7 @@ static int bcm_kona_gpio_irq_reqres(struct irq_data *d)
{
struct bcm_kona_gpio *kona_gpio = irq_data_get_irq_chip_data(d);
if (gpio_lock_as_irq(&kona_gpio->gpio_chip, d->hwirq)) {
if (gpiochip_lock_as_irq(&kona_gpio->gpio_chip, d->hwirq)) {
dev_err(kona_gpio->gpio_chip.dev,
"unable to lock HW IRQ %lu for IRQ\n",
d->hwirq);
@ -483,7 +483,7 @@ static void bcm_kona_gpio_irq_relres(struct irq_data *d)
{
struct bcm_kona_gpio *kona_gpio = irq_data_get_irq_chip_data(d);
gpio_unlock_as_irq(&kona_gpio->gpio_chip, d->hwirq);
gpiochip_unlock_as_irq(&kona_gpio->gpio_chip, d->hwirq);
}
static struct irq_chip bcm_gpio_irq_chip = {

4
drivers/gpio/gpio-dwapb.c
View File

@ -194,7 +194,7 @@ static int dwapb_irq_reqres(struct irq_data *d)
struct dwapb_gpio *gpio = igc->private;
struct bgpio_chip *bgc = &gpio->ports[0].bgc;
if (gpio_lock_as_irq(&bgc->gc, irqd_to_hwirq(d))) {
if (gpiochip_lock_as_irq(&bgc->gc, irqd_to_hwirq(d))) {
dev_err(gpio->dev, "unable to lock HW IRQ %lu for IRQ\n",
irqd_to_hwirq(d));
return -EINVAL;
@ -208,7 +208,7 @@ static void dwapb_irq_relres(struct irq_data *d)
struct dwapb_gpio *gpio = igc->private;
struct bgpio_chip *bgc = &gpio->ports[0].bgc;
gpio_unlock_as_irq(&bgc->gc, irqd_to_hwirq(d));
gpiochip_unlock_as_irq(&bgc->gc, irqd_to_hwirq(d));
}
static int dwapb_irq_set_type(struct irq_data *d, u32 type)

4
drivers/gpio/gpio-em.c
View File

@ -103,7 +103,7 @@ static int em_gio_irq_reqres(struct irq_data *d)
{
struct em_gio_priv *p = irq_data_get_irq_chip_data(d);
if (gpio_lock_as_irq(&p->gpio_chip, irqd_to_hwirq(d))) {
if (gpiochip_lock_as_irq(&p->gpio_chip, irqd_to_hwirq(d))) {
dev_err(p->gpio_chip.dev,
"unable to lock HW IRQ %lu for IRQ\n",
irqd_to_hwirq(d));
@ -116,7 +116,7 @@ static void em_gio_irq_relres(struct irq_data *d)
{
struct em_gio_priv *p = irq_data_get_irq_chip_data(d);
gpio_unlock_as_irq(&p->gpio_chip, irqd_to_hwirq(d));
gpiochip_unlock_as_irq(&p->gpio_chip, irqd_to_hwirq(d));
}

4
drivers/gpio/gpio-mcp23s08.c
View File

@ -444,7 +444,7 @@ static int mcp23s08_irq_reqres(struct irq_data *data)
{
struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
if (gpio_lock_as_irq(&mcp->chip, data->hwirq)) {
if (gpiochip_lock_as_irq(&mcp->chip, data->hwirq)) {
dev_err(mcp->chip.dev,
"unable to lock HW IRQ %lu for IRQ usage\n",
data->hwirq);
@ -458,7 +458,7 @@ static void mcp23s08_irq_relres(struct irq_data *data)
{
struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
gpio_unlock_as_irq(&mcp->chip, data->hwirq);
gpiochip_unlock_as_irq(&mcp->chip, data->hwirq);
}
static struct irq_chip mcp23s08_irq_chip = {

2
drivers/gpio/gpio-omap.c
View File

@ -800,7 +800,7 @@ static void omap_gpio_irq_shutdown(struct irq_data *d)
unsigned offset = GPIO_INDEX(bank, gpio);
spin_lock_irqsave(&bank->lock, flags);
gpio_unlock_as_irq(&bank->chip, offset);
gpiochip_unlock_as_irq(&bank->chip, offset);
bank->irq_usage &= ~(BIT(offset));
omap_disable_gpio_module(bank, offset);
omap_reset_gpio(bank, gpio);

4
drivers/gpio/gpio-tegra.c
View File

@ -233,7 +233,7 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)
return -EINVAL;
}
ret = gpio_lock_as_irq(&tegra_gpio_chip, gpio);
ret = gpiochip_lock_as_irq(&tegra_gpio_chip, gpio);
if (ret) {
dev_err(dev, "unable to lock Tegra GPIO %d as IRQ\n", gpio);
return ret;
@ -263,7 +263,7 @@ static void tegra_gpio_irq_shutdown(struct irq_data *d)
{
int gpio = d->hwirq;
gpio_unlock_as_irq(&tegra_gpio_chip, gpio);
gpiochip_unlock_as_irq(&tegra_gpio_chip, gpio);
}
static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)

4
drivers/gpio/gpio-vr41xx.c
View File

@ -138,7 +138,7 @@ static void unmask_giuint_low(struct irq_data *d)
static unsigned int startup_giuint(struct irq_data *data)
{
if (gpio_lock_as_irq(&vr41xx_gpio_chip, data->hwirq))
if (gpiochip_lock_as_irq(&vr41xx_gpio_chip, data->hwirq))
dev_err(vr41xx_gpio_chip.dev,
"unable to lock HW IRQ %lu for IRQ\n",
data->hwirq);
@ -150,7 +150,7 @@ static unsigned int startup_giuint(struct irq_data *data)
static void shutdown_giuint(struct irq_data *data)
{
mask_giuint_low(data);
gpio_unlock_as_irq(&vr41xx_gpio_chip, data->hwirq);
gpiochip_unlock_as_irq(&vr41xx_gpio_chip, data->hwirq);
}
static struct irq_chip giuint_low_irq_chip = {

6
drivers/gpio/gpiolib-acpi.c
View File

@ -153,7 +153,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
gpiod_direction_input(desc);
ret = gpio_lock_as_irq(chip, pin);
ret = gpiochip_lock_as_irq(chip, pin);
if (ret) {
dev_err(chip->dev, "Failed to lock GPIO as interrupt\n");
goto fail_free_desc;
@ -209,7 +209,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
fail_free_event:
kfree(event);
fail_unlock_irq:
gpio_unlock_as_irq(chip, pin);
gpiochip_unlock_as_irq(chip, pin);
fail_free_desc:
gpiochip_free_own_desc(desc);
@ -280,7 +280,7 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
desc = event->desc;
if (WARN_ON(IS_ERR(desc)))
continue;
gpio_unlock_as_irq(chip, event->pin);
gpiochip_unlock_as_irq(chip, event->pin);
gpiochip_free_own_desc(desc);
list_del(&event->node);
kfree(event);

4
drivers/gpio/gpiolib-sysfs.c
View File

@ -161,7 +161,7 @@ static int gpio_setup_irq(struct gpio_desc *desc, struct device *dev,
desc->flags &= ~GPIO_TRIGGER_MASK;
if (!gpio_flags) {
gpio_unlock_as_irq(desc->chip, gpio_chip_hwgpio(desc));
gpiochip_unlock_as_irq(desc->chip, gpio_chip_hwgpio(desc));
ret = 0;
goto free_id;
}
@ -200,7 +200,7 @@ static int gpio_setup_irq(struct gpio_desc *desc, struct device *dev,
if (ret < 0)
goto free_id;
ret = gpio_lock_as_irq(desc->chip, gpio_chip_hwgpio(desc));
ret = gpiochip_lock_as_irq(desc->chip, gpio_chip_hwgpio(desc));
if (ret < 0) {
gpiod_warn(desc, "failed to flag the GPIO for IRQ\n");
goto free_id;

16
drivers/gpio/gpiolib.c
View File

@ -495,7 +495,7 @@ static int gpiochip_irq_reqres(struct irq_data *d)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
if (gpio_lock_as_irq(chip, d->hwirq)) {
if (gpiochip_lock_as_irq(chip, d->hwirq)) {
chip_err(chip,
"unable to lock HW IRQ %lu for IRQ\n",
d->hwirq);
@ -508,7 +508,7 @@ static void gpiochip_irq_relres(struct irq_data *d)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
gpio_unlock_as_irq(chip, d->hwirq);
gpiochip_unlock_as_irq(chip, d->hwirq);
}
static int gpiochip_to_irq(struct gpio_chip *chip, unsigned offset)
@ -1332,14 +1332,14 @@ int gpiod_to_irq(const struct gpio_desc *desc)
EXPORT_SYMBOL_GPL(gpiod_to_irq);
/**
* gpio_lock_as_irq() - lock a GPIO to be used as IRQ
* gpiochip_lock_as_irq() - lock a GPIO to be used as IRQ
* @chip: the chip the GPIO to lock belongs to
* @offset: the offset of the GPIO to lock as IRQ
*
* This is used directly by GPIO drivers that want to lock down
* a certain GPIO line to be used for IRQs.
*/
int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
{
if (offset >= chip->ngpio)
return -EINVAL;
@ -1354,24 +1354,24 @@ int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
set_bit(FLAG_USED_AS_IRQ, &chip->desc[offset].flags);
return 0;
}
EXPORT_SYMBOL_GPL(gpio_lock_as_irq);
EXPORT_SYMBOL_GPL(gpiochip_lock_as_irq);
/**
* gpio_unlock_as_irq() - unlock a GPIO used as IRQ
* gpiochip_unlock_as_irq() - unlock a GPIO used as IRQ
* @chip: the chip the GPIO to lock belongs to
* @offset: the offset of the GPIO to lock as IRQ
*
* This is used directly by GPIO drivers that want to indicate
* that a certain GPIO is no longer used exclusively for IRQ.
*/
void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset)
void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset)
{
if (offset >= chip->ngpio)
return;
clear_bit(FLAG_USED_AS_IRQ, &chip->desc[offset].flags);
}
EXPORT_SYMBOL_GPL(gpio_unlock_as_irq);
EXPORT_SYMBOL_GPL(gpiochip_unlock_as_irq);
/**
* gpiod_get_raw_value_cansleep() - return a gpio's raw value

4
drivers/pinctrl/pinctrl-at91.c
View File

@ -1472,7 +1472,7 @@ static unsigned int gpio_irq_startup(struct irq_data *d)
unsigned pin = d->hwirq;
int ret;
ret = gpio_lock_as_irq(&at91_gpio->chip, pin);
ret = gpiochip_lock_as_irq(&at91_gpio->chip, pin);
if (ret) {
dev_err(at91_gpio->chip.dev, "unable to lock pind %lu IRQ\n",
d->hwirq);
@ -1488,7 +1488,7 @@ static void gpio_irq_shutdown(struct irq_data *d)
unsigned pin = d->hwirq;
gpio_irq_mask(d);
gpio_unlock_as_irq(&at91_gpio->chip, pin);
gpiochip_unlock_as_irq(&at91_gpio->chip, pin);
}
#ifdef CONFIG_PM

4
drivers/pinctrl/samsung/pinctrl-exynos.c
View File

@ -180,7 +180,7 @@ static int exynos_irq_request_resources(struct irq_data *irqd)
unsigned int con;
int ret;
ret = gpio_lock_as_irq(&bank->gpio_chip, irqd->hwirq);
ret = gpiochip_lock_as_irq(&bank->gpio_chip, irqd->hwirq);
if (ret) {
dev_err(bank->gpio_chip.dev, "unable to lock pin %s-%lu IRQ\n",
bank->name, irqd->hwirq);
@ -233,7 +233,7 @@ static void exynos_irq_release_resources(struct irq_data *irqd)
spin_unlock_irqrestore(&bank->slock, flags);
gpio_unlock_as_irq(&bank->gpio_chip, irqd->hwirq);
gpiochip_unlock_as_irq(&bank->gpio_chip, irqd->hwirq);
}
/*

6
drivers/pinctrl/sunxi/pinctrl-sunxi.c
View File

@ -553,7 +553,7 @@ static int sunxi_pinctrl_irq_request_resources(struct irq_data *d)
if (!func)
return -EINVAL;
ret = gpio_lock_as_irq(pctl->chip,
ret = gpiochip_lock_as_irq(pctl->chip,
pctl->irq_array[d->hwirq] - pctl->desc->pin_base);
if (ret) {
dev_err(pctl->dev, "unable to lock HW IRQ %lu for IRQ\n",
@ -571,8 +571,8 @@ static void sunxi_pinctrl_irq_release_resources(struct irq_data *d)
{
struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
gpio_unlock_as_irq(pctl->chip,
pctl->irq_array[d->hwirq] - pctl->desc->pin_base);
gpiochip_unlock_as_irq(pctl->chip,
pctl->irq_array[d->hwirq] - pctl->desc->pin_base);
}
static int sunxi_pinctrl_irq_set_type(struct irq_data *d, unsigned int type)

7
include/linux/gpio.h
View File

@ -216,14 +216,15 @@ static inline int gpio_to_irq(unsigned gpio)
return -EINVAL;
}
static inline int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
static inline int gpiochip_lock_as_irq(struct gpio_chip *chip,
unsigned int offset)
{
WARN_ON(1);
return -EINVAL;
}
static inline void gpio_unlock_as_irq(struct gpio_chip *chip,
unsigned int offset)
static inline void gpiochip_unlock_as_irq(struct gpio_chip *chip,
unsigned int offset)
{
WARN_ON(1);
}

4
include/linux/gpio/driver.h
View File

@ -149,8 +149,8 @@ extern struct gpio_chip *gpiochip_find(void *data,
int (*match)(struct gpio_chip *chip, void *data));
/* lock/unlock as IRQ */
int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);