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gpio: mpc8xxx: Remove *read_reg and *write_reg from struct mpc8xxx_gpio_chip 

*read_reg and *write_reg can be removed because at all the places to call
them, we can just use gc->read_reg/gc->write_reg instead.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Axel Lin 2016-02-22 15:24:01 +08:00 committed by Linus Walleij
parent fa4007ca06
commit cd0d3f58a0
1 changed files with 21 additions and 27 deletions
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46
drivers/gpio/gpio-mpc8xxx.c
View File

@ -37,9 +37,6 @@ struct mpc8xxx_gpio_chip {
void __iomem *regs;
raw_spinlock_t lock;
unsigned long (*read_reg)(void __iomem *reg);
void (*write_reg)(void __iomem *reg, unsigned long data);
int (*direction_output)(struct gpio_chip *chip,
unsigned offset, int value);
@ -58,8 +55,8 @@ static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio)
struct mpc8xxx_gpio_chip *mpc8xxx_gc = gpiochip_get_data(gc);
u32 out_mask, out_shadow;
out_mask = mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_DIR);
val = mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_DAT) & ~out_mask;
out_mask = gc->read_reg(mpc8xxx_gc->regs + GPIO_DIR);
val = gc->read_reg(mpc8xxx_gc->regs + GPIO_DAT) & ~out_mask;
out_shadow = gc->bgpio_data & out_mask;
return !!((val | out_shadow) & gc->pin2mask(gc, gpio));
@ -101,10 +98,11 @@ static void mpc8xxx_gpio_irq_cascade(struct irq_desc *desc)
{
struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
struct gpio_chip *gc = &mpc8xxx_gc->gc;
unsigned int mask;
mask = mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_IER)
& mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR);
mask = gc->read_reg(mpc8xxx_gc->regs + GPIO_IER)
& gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR);
if (mask)
generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq,
32 - ffs(mask)));
@ -120,8 +118,8 @@ static void mpc8xxx_irq_unmask(struct irq_data *d)
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR)
gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR)
| gc->pin2mask(gc, irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
@ -135,8 +133,8 @@ static void mpc8xxx_irq_mask(struct irq_data *d)
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR)
gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR)
& ~(gc->pin2mask(gc, irqd_to_hwirq(d))));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
@ -147,7 +145,7 @@ static void mpc8xxx_irq_ack(struct irq_data *d)
struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
struct gpio_chip *gc = &mpc8xxx_gc->gc;
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_IER,
gc->write_reg(mpc8xxx_gc->regs + GPIO_IER,
gc->pin2mask(gc, irqd_to_hwirq(d)));
}
@ -160,16 +158,16 @@ static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
switch (flow_type) {
case IRQ_TYPE_EDGE_FALLING:
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR,
mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR)
gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR)
| gc->pin2mask(gc, irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
case IRQ_TYPE_EDGE_BOTH:
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR,
mpc8xxx_gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR)
gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR)
& ~(gc->pin2mask(gc, irqd_to_hwirq(d))));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
@ -184,6 +182,7 @@ static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
static int mpc512x_irq_set_type(struct irq_data *d, unsigned int flow_type)
{
struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
struct gpio_chip *gc = &mpc8xxx_gc->gc;
unsigned long gpio = irqd_to_hwirq(d);
void __iomem *reg;
unsigned int shift;
@ -201,8 +200,7 @@ static int mpc512x_irq_set_type(struct irq_data *d, unsigned int flow_type)
case IRQ_TYPE_EDGE_FALLING:
case IRQ_TYPE_LEVEL_LOW:
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(reg,
(mpc8xxx_gc->read_reg(reg) & ~(3 << shift))
gc->write_reg(reg, (gc->read_reg(reg) & ~(3 << shift))
| (2 << shift));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
@ -210,16 +208,14 @@ static int mpc512x_irq_set_type(struct irq_data *d, unsigned int flow_type)
case IRQ_TYPE_EDGE_RISING:
case IRQ_TYPE_LEVEL_HIGH:
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(reg,
(mpc8xxx_gc->read_reg(reg) & ~(3 << shift))
gc->write_reg(reg, (gc->read_reg(reg) & ~(3 << shift))
| (1 << shift));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
case IRQ_TYPE_EDGE_BOTH:
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
mpc8xxx_gc->write_reg(reg,
(mpc8xxx_gc->read_reg(reg) & ~(3 << shift)));
gc->write_reg(reg, (gc->read_reg(reg) & ~(3 << shift)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
@ -332,8 +328,6 @@ static int mpc8xxx_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "GPIO registers are BIG endian\n");
}
mpc8xxx_gc->read_reg = gc->read_reg;
mpc8xxx_gc->write_reg = gc->write_reg;
mpc8xxx_gc->direction_output = gc->direction_output;
if (!devtype)
@ -366,8 +360,8 @@ static int mpc8xxx_probe(struct platform_device *pdev)
return 0;
/* ack and mask all irqs */
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_IER, 0xffffffff);
mpc8xxx_gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR, 0);
gc->write_reg(mpc8xxx_gc->regs + GPIO_IER, 0xffffffff);
gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR, 0);
irq_set_chained_handler_and_data(mpc8xxx_gc->irqn,
mpc8xxx_gpio_irq_cascade, mpc8xxx_gc);