s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no);
}
-
-static void __iomem *exynos_eint_base;
-
-static DEFINE_SPINLOCK(eint_lock);
-
-static unsigned int eint0_15_data[16];
-
-static inline int exynos4_irq_to_gpio(unsigned int irq)
-{
- if (irq < IRQ_EINT(0))
- return -EINVAL;
-
- irq -= IRQ_EINT(0);
- if (irq < 8)
- return EXYNOS4_GPX0(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS4_GPX1(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS4_GPX2(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS4_GPX3(irq);
-
- return -EINVAL;
-}
-
-static inline int exynos5_irq_to_gpio(unsigned int irq)
-{
- if (irq < IRQ_EINT(0))
- return -EINVAL;
-
- irq -= IRQ_EINT(0);
- if (irq < 8)
- return EXYNOS5_GPX0(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS5_GPX1(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS5_GPX2(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS5_GPX3(irq);
-
- return -EINVAL;
-}
-
-static unsigned int exynos4_eint0_15_src_int[16] = {
- EXYNOS4_IRQ_EINT0,
- EXYNOS4_IRQ_EINT1,
- EXYNOS4_IRQ_EINT2,
- EXYNOS4_IRQ_EINT3,
- EXYNOS4_IRQ_EINT4,
- EXYNOS4_IRQ_EINT5,
- EXYNOS4_IRQ_EINT6,
- EXYNOS4_IRQ_EINT7,
- EXYNOS4_IRQ_EINT8,
- EXYNOS4_IRQ_EINT9,
- EXYNOS4_IRQ_EINT10,
- EXYNOS4_IRQ_EINT11,
- EXYNOS4_IRQ_EINT12,
- EXYNOS4_IRQ_EINT13,
- EXYNOS4_IRQ_EINT14,
- EXYNOS4_IRQ_EINT15,
-};
-
-static unsigned int exynos5_eint0_15_src_int[16] = {
- EXYNOS5_IRQ_EINT0,
- EXYNOS5_IRQ_EINT1,
- EXYNOS5_IRQ_EINT2,
- EXYNOS5_IRQ_EINT3,
- EXYNOS5_IRQ_EINT4,
- EXYNOS5_IRQ_EINT5,
- EXYNOS5_IRQ_EINT6,
- EXYNOS5_IRQ_EINT7,
- EXYNOS5_IRQ_EINT8,
- EXYNOS5_IRQ_EINT9,
- EXYNOS5_IRQ_EINT10,
- EXYNOS5_IRQ_EINT11,
- EXYNOS5_IRQ_EINT12,
- EXYNOS5_IRQ_EINT13,
- EXYNOS5_IRQ_EINT14,
- EXYNOS5_IRQ_EINT15,
-};
-static inline void exynos_irq_eint_mask(struct irq_data *data)
-{
- u32 mask;
-
- spin_lock(&eint_lock);
- mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
- mask |= EINT_OFFSET_BIT(data->irq);
- __raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
- spin_unlock(&eint_lock);
-}
-
-static void exynos_irq_eint_unmask(struct irq_data *data)
-{
- u32 mask;
-
- spin_lock(&eint_lock);
- mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
- mask &= ~(EINT_OFFSET_BIT(data->irq));
- __raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
- spin_unlock(&eint_lock);
-}
-
-static inline void exynos_irq_eint_ack(struct irq_data *data)
-{
- __raw_writel(EINT_OFFSET_BIT(data->irq),
- EINT_PEND(exynos_eint_base, data->irq));
-}
-
-static void exynos_irq_eint_maskack(struct irq_data *data)
-{
- exynos_irq_eint_mask(data);
- exynos_irq_eint_ack(data);
-}
-
-static int exynos_irq_eint_set_type(struct irq_data *data, unsigned int type)
-{
- int offs = EINT_OFFSET(data->irq);
- int shift;
- u32 ctrl, mask;
- u32 newvalue = 0;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- newvalue = S5P_IRQ_TYPE_EDGE_RISING;
- break;
-
- case IRQ_TYPE_EDGE_FALLING:
- newvalue = S5P_IRQ_TYPE_EDGE_FALLING;
- break;
-
- case IRQ_TYPE_EDGE_BOTH:
- newvalue = S5P_IRQ_TYPE_EDGE_BOTH;
- break;
-
- case IRQ_TYPE_LEVEL_LOW:
- newvalue = S5P_IRQ_TYPE_LEVEL_LOW;
- break;
-
- case IRQ_TYPE_LEVEL_HIGH:
- newvalue = S5P_IRQ_TYPE_LEVEL_HIGH;
- break;
-
- default:
- printk(KERN_ERR "No such irq type %d", type);
- return -EINVAL;
- }
-
- shift = (offs & 0x7) * 4;
- mask = 0x7 << shift;
-
- spin_lock(&eint_lock);
- ctrl = __raw_readl(EINT_CON(exynos_eint_base, data->irq));
- ctrl &= ~mask;
- ctrl |= newvalue << shift;
- __raw_writel(ctrl, EINT_CON(exynos_eint_base, data->irq));
- spin_unlock(&eint_lock);
-
- if (soc_is_exynos5250())
- s3c_gpio_cfgpin(exynos5_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
- else
- s3c_gpio_cfgpin(exynos4_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
-
- return 0;
-}
-
-static struct irq_chip exynos_irq_eint = {
- .name = "exynos-eint",
- .irq_mask = exynos_irq_eint_mask,
- .irq_unmask = exynos_irq_eint_unmask,
- .irq_mask_ack = exynos_irq_eint_maskack,
- .irq_ack = exynos_irq_eint_ack,
- .irq_set_type = exynos_irq_eint_set_type,
-#ifdef CONFIG_PM
- .irq_set_wake = s3c_irqext_wake,
-#endif
-};
-
-/*
- * exynos4_irq_demux_eint
- *
- * This function demuxes the IRQ from from EINTs 16 to 31.
- * It is designed to be inlined into the specific handler
- * s5p_irq_demux_eintX_Y.
- *
- * Each EINT pend/mask registers handle eight of them.
- */
-static inline void exynos_irq_demux_eint(unsigned int start)
-{
- unsigned int irq;
-
- u32 status = __raw_readl(EINT_PEND(exynos_eint_base, start));
- u32 mask = __raw_readl(EINT_MASK(exynos_eint_base, start));
-
- status &= ~mask;
- status &= 0xff;
-
- while (status) {
- irq = fls(status) - 1;
- generic_handle_irq(irq + start);
- status &= ~(1 << irq);
- }
-}
-
-static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- chained_irq_enter(chip, desc);
- exynos_irq_demux_eint(IRQ_EINT(16));
- exynos_irq_demux_eint(IRQ_EINT(24));
- chained_irq_exit(chip, desc);
-}
-
-static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
-{
- u32 *irq_data = irq_get_handler_data(irq);
- struct irq_chip *chip = irq_get_chip(irq);
-
- chained_irq_enter(chip, desc);
- generic_handle_irq(*irq_data);
- chained_irq_exit(chip, desc);
-}
-
-static int __init exynos_init_irq_eint(void)
-{
- int irq;
-
-#ifdef CONFIG_PINCTRL_SAMSUNG
- /*
- * The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf
- * functionality along with support for external gpio and wakeup
- * interrupts. If the samsung pinctrl driver is enabled and includes
- * the wakeup interrupt support, then the setting up external wakeup
- * interrupts here can be skipped. This check here is temporary to
- * allow exynos4 platforms that do not use Samsung pinctrl driver to
- * co-exist with platforms that do. When all of the Samsung Exynos4
- * platforms switch over to using the pinctrl driver, the wakeup
- * interrupt support code here can be completely removed.
- */
- static const struct of_device_id exynos_pinctrl_ids[] = {
- { .compatible = "samsung,exynos4210-pinctrl", },
- { .compatible = "samsung,exynos4x12-pinctrl", },
- { .compatible = "samsung,exynos5250-pinctrl", },
- };
- struct device_node *pctrl_np, *wkup_np;
- const char *wkup_compat = "samsung,exynos4210-wakeup-eint";
-
- for_each_matching_node(pctrl_np, exynos_pinctrl_ids) {
- if (of_device_is_available(pctrl_np)) {
- wkup_np = of_find_compatible_node(pctrl_np, NULL,
- wkup_compat);
- if (wkup_np)
- return -ENODEV;
- }
- }
-#endif
- if (soc_is_exynos5440())
- return 0;
-
- if (soc_is_exynos5250())
- exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
- else
- exynos_eint_base = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
-
- if (exynos_eint_base == NULL) {
- pr_err("unable to ioremap for EINT base address\n");
- return -ENOMEM;
- }
-
- for (irq = 0 ; irq <= 31 ; irq++) {
- irq_set_chip_and_handler(IRQ_EINT(irq), &exynos_irq_eint,
- handle_level_irq);
- set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
- }
-
- irq_set_chained_handler(EXYNOS_IRQ_EINT16_31, exynos_irq_demux_eint16_31);
-
- for (irq = 0 ; irq <= 15 ; irq++) {
- eint0_15_data[irq] = IRQ_EINT(irq);
-
- if (soc_is_exynos5250()) {
- irq_set_handler_data(exynos5_eint0_15_src_int[irq],
- &eint0_15_data[irq]);
- irq_set_chained_handler(exynos5_eint0_15_src_int[irq],
- exynos_irq_eint0_15);
- } else {
- irq_set_handler_data(exynos4_eint0_15_src_int[irq],
- &eint0_15_data[irq]);
- irq_set_chained_handler(exynos4_eint0_15_src_int[irq],
- exynos_irq_eint0_15);
- }
- }
-
- return 0;
-}
-arch_initcall(exynos_init_irq_eint);
projects / kernel / kernel-generic.git / commitdiff