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ar71xx: optimize register access in irq.c 

SVN-Revision: 20286
This commit is contained in:
Gabor Juhos 2010-03-18 19:19:13 +00:00
parent 2438a03ce4
commit 1dedaf30a6
1 changed files with 46 additions and 23 deletions
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69
target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
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@ -23,10 +23,11 @@
static void ar71xx_gpio_irq_dispatch(void)
{
void __iomem *base = ar71xx_gpio_base;
u32 pending;
pending = ar71xx_gpio_rr(GPIO_REG_INT_PENDING)
& ar71xx_gpio_rr(GPIO_REG_INT_ENABLE);
pending = __raw_readl(base + GPIO_REG_INT_PENDING) &
__raw_readl(base + GPIO_REG_INT_ENABLE);
if (pending)
do_IRQ(AR71XX_GPIO_IRQ_BASE + fls(pending) - 1);
@ -36,22 +37,30 @@ static void ar71xx_gpio_irq_dispatch(void)
static void ar71xx_gpio_irq_unmask(unsigned int irq)
{
void __iomem *base = ar71xx_gpio_base;
u32 t;
irq -= AR71XX_GPIO_IRQ_BASE;
ar71xx_gpio_wr(GPIO_REG_INT_ENABLE,
ar71xx_gpio_rr(GPIO_REG_INT_ENABLE) | (1 << irq));
t = __raw_readl(base + GPIO_REG_INT_ENABLE);
__raw_writel(t | (1 << irq), base + GPIO_REG_INT_ENABLE);
/* flush write */
ar71xx_gpio_rr(GPIO_REG_INT_ENABLE);
(void) __raw_readl(base + GPIO_REG_INT_ENABLE);
}
static void ar71xx_gpio_irq_mask(unsigned int irq)
{
void __iomem *base = ar71xx_gpio_base;
u32 t;
irq -= AR71XX_GPIO_IRQ_BASE;
ar71xx_gpio_wr(GPIO_REG_INT_ENABLE,
ar71xx_gpio_rr(GPIO_REG_INT_ENABLE) & ~(1 << irq));
t = __raw_readl(base + GPIO_REG_INT_ENABLE);
__raw_writel(t & ~(1 << irq), base + GPIO_REG_INT_ENABLE);
/* flush write */
ar71xx_gpio_rr(GPIO_REG_INT_ENABLE);
(void) __raw_readl(base + GPIO_REG_INT_ENABLE);
}
#if 0
@ -82,16 +91,17 @@ static struct irqaction ar71xx_gpio_irqaction = {
static void __init ar71xx_gpio_irq_init(void)
{
void __iomem *base = ar71xx_gpio_base;
int i;
ar71xx_gpio_wr(GPIO_REG_INT_ENABLE, 0);
ar71xx_gpio_wr(GPIO_REG_INT_PENDING, 0);
__raw_writel(0, base + GPIO_REG_INT_ENABLE);
__raw_writel(0, base + GPIO_REG_INT_PENDING);
/* setup type of all GPIO interrupts to level sensitive */
ar71xx_gpio_wr(GPIO_REG_INT_TYPE, GPIO_INT_ALL);
__raw_writel(GPIO_INT_ALL, base + GPIO_REG_INT_TYPE);
/* setup polarity of all GPIO interrupts to active high */
ar71xx_gpio_wr(GPIO_REG_INT_POLARITY, GPIO_INT_ALL);
__raw_writel(GPIO_INT_ALL, base + GPIO_REG_INT_POLARITY);
for (i = AR71XX_GPIO_IRQ_BASE;
i < AR71XX_GPIO_IRQ_BASE + AR71XX_GPIO_IRQ_COUNT; i++) {
@ -140,32 +150,44 @@ static void ar71xx_misc_irq_dispatch(void)
static void ar71xx_misc_irq_unmask(unsigned int irq)
{
void __iomem *base = ar71xx_reset_base;
u32 t;
irq -= AR71XX_MISC_IRQ_BASE;
ar71xx_reset_wr(AR71XX_RESET_REG_MISC_INT_ENABLE,
ar71xx_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE) | (1 << irq));
t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_MISC_INT_ENABLE);
/* flush write */
ar71xx_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE);
(void) __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
}
static void ar71xx_misc_irq_mask(unsigned int irq)
{
void __iomem *base = ar71xx_reset_base;
u32 t;
irq -= AR71XX_MISC_IRQ_BASE;
ar71xx_reset_wr(AR71XX_RESET_REG_MISC_INT_ENABLE,
ar71xx_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE) & ~(1 << irq));
t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_MISC_INT_ENABLE);
/* flush write */
ar71xx_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE);
(void) __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
}
static void ar724x_misc_irq_ack(unsigned int irq)
{
void __iomem *base = ar71xx_reset_base;
u32 t;
irq -= AR71XX_MISC_IRQ_BASE;
ar71xx_reset_wr(AR71XX_RESET_REG_MISC_INT_STATUS,
ar71xx_reset_rr(AR71XX_RESET_REG_MISC_INT_STATUS) & ~(1 << irq));
t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS);
__raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_MISC_INT_STATUS);
/* flush write */
ar71xx_reset_rr(AR71XX_RESET_REG_MISC_INT_STATUS);
(void) __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS);
}
static struct irq_chip ar71xx_misc_irq_chip = {
@ -181,10 +203,11 @@ static struct irqaction ar71xx_misc_irqaction = {
static void __init ar71xx_misc_irq_init(void)
{
void __iomem *base = ar71xx_reset_base;
int i;
ar71xx_reset_wr(AR71XX_RESET_REG_MISC_INT_ENABLE, 0);
ar71xx_reset_wr(AR71XX_RESET_REG_MISC_INT_STATUS, 0);
__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS);
if (ar71xx_soc == AR71XX_SOC_AR7240)
ar71xx_misc_irq_chip.ack = ar724x_misc_irq_ack;