gpio: pl061: rename variable from chip to pl061
Rename the local variable "chip" referring to the struct pl061
state container to "pl061": we already have gpio_chip and irq_chip
in the driver, we are needlessly adding yet another "chip" to
the confusion.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index b944aae..47f3972 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -64,22 +64,22 @@
static int pl061_get_direction(struct gpio_chip *gc, unsigned offset)
{
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
- return !(readb(chip->base + GPIODIR) & BIT(offset));
+ return !(readb(pl061->base + GPIODIR) & BIT(offset));
}
static int pl061_direction_input(struct gpio_chip *gc, unsigned offset)
{
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
unsigned long flags;
unsigned char gpiodir;
- spin_lock_irqsave(&chip->lock, flags);
- gpiodir = readb(chip->base + GPIODIR);
+ spin_lock_irqsave(&pl061->lock, flags);
+ gpiodir = readb(pl061->base + GPIODIR);
gpiodir &= ~(BIT(offset));
- writeb(gpiodir, chip->base + GPIODIR);
- spin_unlock_irqrestore(&chip->lock, flags);
+ writeb(gpiodir, pl061->base + GPIODIR);
+ spin_unlock_irqrestore(&pl061->lock, flags);
return 0;
}
@@ -87,44 +87,44 @@
static int pl061_direction_output(struct gpio_chip *gc, unsigned offset,
int value)
{
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
unsigned long flags;
unsigned char gpiodir;
- spin_lock_irqsave(&chip->lock, flags);
- writeb(!!value << offset, chip->base + (BIT(offset + 2)));
- gpiodir = readb(chip->base + GPIODIR);
+ spin_lock_irqsave(&pl061->lock, flags);
+ writeb(!!value << offset, pl061->base + (BIT(offset + 2)));
+ gpiodir = readb(pl061->base + GPIODIR);
gpiodir |= BIT(offset);
- writeb(gpiodir, chip->base + GPIODIR);
+ writeb(gpiodir, pl061->base + GPIODIR);
/*
* gpio value is set again, because pl061 doesn't allow to set value of
* a gpio pin before configuring it in OUT mode.
*/
- writeb(!!value << offset, chip->base + (BIT(offset + 2)));
- spin_unlock_irqrestore(&chip->lock, flags);
+ writeb(!!value << offset, pl061->base + (BIT(offset + 2)));
+ spin_unlock_irqrestore(&pl061->lock, flags);
return 0;
}
static int pl061_get_value(struct gpio_chip *gc, unsigned offset)
{
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
- return !!readb(chip->base + (BIT(offset + 2)));
+ return !!readb(pl061->base + (BIT(offset + 2)));
}
static void pl061_set_value(struct gpio_chip *gc, unsigned offset, int value)
{
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
- writeb(!!value << offset, chip->base + (BIT(offset + 2)));
+ writeb(!!value << offset, pl061->base + (BIT(offset + 2)));
}
static int pl061_irq_type(struct irq_data *d, unsigned trigger)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
int offset = irqd_to_hwirq(d);
unsigned long flags;
u8 gpiois, gpioibe, gpioiev;
@@ -144,11 +144,11 @@
}
- spin_lock_irqsave(&chip->lock, flags);
+ spin_lock_irqsave(&pl061->lock, flags);
- gpioiev = readb(chip->base + GPIOIEV);
- gpiois = readb(chip->base + GPIOIS);
- gpioibe = readb(chip->base + GPIOIBE);
+ gpioiev = readb(pl061->base + GPIOIEV);
+ gpiois = readb(pl061->base + GPIOIS);
+ gpioibe = readb(pl061->base + GPIOIBE);
if (trigger & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) {
bool polarity = trigger & IRQ_TYPE_LEVEL_HIGH;
@@ -200,11 +200,11 @@
offset);
}
- writeb(gpiois, chip->base + GPIOIS);
- writeb(gpioibe, chip->base + GPIOIBE);
- writeb(gpioiev, chip->base + GPIOIEV);
+ writeb(gpiois, pl061->base + GPIOIS);
+ writeb(gpioibe, pl061->base + GPIOIBE);
+ writeb(gpioiev, pl061->base + GPIOIEV);
- spin_unlock_irqrestore(&chip->lock, flags);
+ spin_unlock_irqrestore(&pl061->lock, flags);
return 0;
}
@@ -214,12 +214,12 @@
unsigned long pending;
int offset;
struct gpio_chip *gc = irq_desc_get_handler_data(desc);
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
struct irq_chip *irqchip = irq_desc_get_chip(desc);
chained_irq_enter(irqchip, desc);
- pending = readb(chip->base + GPIOMIS);
+ pending = readb(pl061->base + GPIOMIS);
if (pending) {
for_each_set_bit(offset, &pending, PL061_GPIO_NR)
generic_handle_irq(irq_find_mapping(gc->irqdomain,
@@ -232,27 +232,27 @@
static void pl061_irq_mask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
u8 mask = BIT(irqd_to_hwirq(d) % PL061_GPIO_NR);
u8 gpioie;
- spin_lock(&chip->lock);
- gpioie = readb(chip->base + GPIOIE) & ~mask;
- writeb(gpioie, chip->base + GPIOIE);
- spin_unlock(&chip->lock);
+ spin_lock(&pl061->lock);
+ gpioie = readb(pl061->base + GPIOIE) & ~mask;
+ writeb(gpioie, pl061->base + GPIOIE);
+ spin_unlock(&pl061->lock);
}
static void pl061_irq_unmask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
u8 mask = BIT(irqd_to_hwirq(d) % PL061_GPIO_NR);
u8 gpioie;
- spin_lock(&chip->lock);
- gpioie = readb(chip->base + GPIOIE) | mask;
- writeb(gpioie, chip->base + GPIOIE);
- spin_unlock(&chip->lock);
+ spin_lock(&pl061->lock);
+ gpioie = readb(pl061->base + GPIOIE) | mask;
+ writeb(gpioie, pl061->base + GPIOIE);
+ spin_unlock(&pl061->lock);
}
/**
@@ -266,20 +266,20 @@
static void pl061_irq_ack(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
u8 mask = BIT(irqd_to_hwirq(d) % PL061_GPIO_NR);
- spin_lock(&chip->lock);
- writeb(mask, chip->base + GPIOIC);
- spin_unlock(&chip->lock);
+ spin_lock(&pl061->lock);
+ writeb(mask, pl061->base + GPIOIC);
+ spin_unlock(&pl061->lock);
}
static int pl061_irq_set_wake(struct irq_data *d, unsigned int state)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct pl061 *chip = gpiochip_get_data(gc);
+ struct pl061 *pl061 = gpiochip_get_data(gc);
- return irq_set_irq_wake(chip->parent_irq, state);
+ return irq_set_irq_wake(pl061->parent_irq, state);
}
static struct irq_chip pl061_irqchip = {
@@ -295,81 +295,81 @@
{
struct device *dev = &adev->dev;
struct pl061_platform_data *pdata = dev_get_platdata(dev);
- struct pl061 *chip;
+ struct pl061 *pl061;
int ret, irq, i, irq_base;
- chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
- if (chip == NULL)
+ pl061 = devm_kzalloc(dev, sizeof(*pl061), GFP_KERNEL);
+ if (pl061 == NULL)
return -ENOMEM;
if (pdata) {
- chip->gc.base = pdata->gpio_base;
+ pl061->gc.base = pdata->gpio_base;
irq_base = pdata->irq_base;
if (irq_base <= 0) {
dev_err(&adev->dev, "invalid IRQ base in pdata\n");
return -ENODEV;
}
} else {
- chip->gc.base = -1;
+ pl061->gc.base = -1;
irq_base = 0;
}
- chip->base = devm_ioremap_resource(dev, &adev->res);
- if (IS_ERR(chip->base))
- return PTR_ERR(chip->base);
+ pl061->base = devm_ioremap_resource(dev, &adev->res);
+ if (IS_ERR(pl061->base))
+ return PTR_ERR(pl061->base);
- spin_lock_init(&chip->lock);
+ spin_lock_init(&pl061->lock);
if (of_property_read_bool(dev->of_node, "gpio-ranges")) {
- chip->gc.request = gpiochip_generic_request;
- chip->gc.free = gpiochip_generic_free;
+ pl061->gc.request = gpiochip_generic_request;
+ pl061->gc.free = gpiochip_generic_free;
}
- chip->gc.get_direction = pl061_get_direction;
- chip->gc.direction_input = pl061_direction_input;
- chip->gc.direction_output = pl061_direction_output;
- chip->gc.get = pl061_get_value;
- chip->gc.set = pl061_set_value;
- chip->gc.ngpio = PL061_GPIO_NR;
- chip->gc.label = dev_name(dev);
- chip->gc.parent = dev;
- chip->gc.owner = THIS_MODULE;
+ pl061->gc.get_direction = pl061_get_direction;
+ pl061->gc.direction_input = pl061_direction_input;
+ pl061->gc.direction_output = pl061_direction_output;
+ pl061->gc.get = pl061_get_value;
+ pl061->gc.set = pl061_set_value;
+ pl061->gc.ngpio = PL061_GPIO_NR;
+ pl061->gc.label = dev_name(dev);
+ pl061->gc.parent = dev;
+ pl061->gc.owner = THIS_MODULE;
- ret = gpiochip_add_data(&chip->gc, chip);
+ ret = gpiochip_add_data(&pl061->gc, pl061);
if (ret)
return ret;
/*
* irq_chip support
*/
- writeb(0, chip->base + GPIOIE); /* disable irqs */
+ writeb(0, pl061->base + GPIOIE); /* disable irqs */
irq = adev->irq[0];
if (irq < 0) {
dev_err(&adev->dev, "invalid IRQ\n");
return -ENODEV;
}
- chip->parent_irq = irq;
+ pl061->parent_irq = irq;
- ret = gpiochip_irqchip_add(&chip->gc, &pl061_irqchip,
+ ret = gpiochip_irqchip_add(&pl061->gc, &pl061_irqchip,
irq_base, handle_bad_irq,
IRQ_TYPE_NONE);
if (ret) {
dev_info(&adev->dev, "could not add irqchip\n");
return ret;
}
- gpiochip_set_chained_irqchip(&chip->gc, &pl061_irqchip,
+ gpiochip_set_chained_irqchip(&pl061->gc, &pl061_irqchip,
irq, pl061_irq_handler);
for (i = 0; i < PL061_GPIO_NR; i++) {
if (pdata) {
if (pdata->directions & (BIT(i)))
- pl061_direction_output(&chip->gc, i,
+ pl061_direction_output(&pl061->gc, i,
pdata->values & (BIT(i)));
else
- pl061_direction_input(&chip->gc, i);
+ pl061_direction_input(&pl061->gc, i);
}
}
- amba_set_drvdata(adev, chip);
+ amba_set_drvdata(adev, pl061);
dev_info(&adev->dev, "PL061 GPIO chip @%pa registered\n",
&adev->res.start);
@@ -379,20 +379,20 @@
#ifdef CONFIG_PM
static int pl061_suspend(struct device *dev)
{
- struct pl061 *chip = dev_get_drvdata(dev);
+ struct pl061 *pl061 = dev_get_drvdata(dev);
int offset;
- chip->csave_regs.gpio_data = 0;
- chip->csave_regs.gpio_dir = readb(chip->base + GPIODIR);
- chip->csave_regs.gpio_is = readb(chip->base + GPIOIS);
- chip->csave_regs.gpio_ibe = readb(chip->base + GPIOIBE);
- chip->csave_regs.gpio_iev = readb(chip->base + GPIOIEV);
- chip->csave_regs.gpio_ie = readb(chip->base + GPIOIE);
+ pl061->csave_regs.gpio_data = 0;
+ pl061->csave_regs.gpio_dir = readb(pl061->base + GPIODIR);
+ pl061->csave_regs.gpio_is = readb(pl061->base + GPIOIS);
+ pl061->csave_regs.gpio_ibe = readb(pl061->base + GPIOIBE);
+ pl061->csave_regs.gpio_iev = readb(pl061->base + GPIOIEV);
+ pl061->csave_regs.gpio_ie = readb(pl061->base + GPIOIE);
for (offset = 0; offset < PL061_GPIO_NR; offset++) {
- if (chip->csave_regs.gpio_dir & (BIT(offset)))
- chip->csave_regs.gpio_data |=
- pl061_get_value(&chip->gc, offset) << offset;
+ if (pl061->csave_regs.gpio_dir & (BIT(offset)))
+ pl061->csave_regs.gpio_data |=
+ pl061_get_value(&pl061->gc, offset) << offset;
}
return 0;
@@ -400,22 +400,22 @@
static int pl061_resume(struct device *dev)
{
- struct pl061 *chip = dev_get_drvdata(dev);
+ struct pl061 *pl061 = dev_get_drvdata(dev);
int offset;
for (offset = 0; offset < PL061_GPIO_NR; offset++) {
- if (chip->csave_regs.gpio_dir & (BIT(offset)))
- pl061_direction_output(&chip->gc, offset,
- chip->csave_regs.gpio_data &
+ if (pl061->csave_regs.gpio_dir & (BIT(offset)))
+ pl061_direction_output(&pl061->gc, offset,
+ pl061->csave_regs.gpio_data &
(BIT(offset)));
else
- pl061_direction_input(&chip->gc, offset);
+ pl061_direction_input(&pl061->gc, offset);
}
- writeb(chip->csave_regs.gpio_is, chip->base + GPIOIS);
- writeb(chip->csave_regs.gpio_ibe, chip->base + GPIOIBE);
- writeb(chip->csave_regs.gpio_iev, chip->base + GPIOIEV);
- writeb(chip->csave_regs.gpio_ie, chip->base + GPIOIE);
+ writeb(pl061->csave_regs.gpio_is, pl061->base + GPIOIS);
+ writeb(pl061->csave_regs.gpio_ibe, pl061->base + GPIOIBE);
+ writeb(pl061->csave_regs.gpio_iev, pl061->base + GPIOIEV);
+ writeb(pl061->csave_regs.gpio_ie, pl061->base + GPIOIE);
return 0;
}