summaryrefslogtreecommitdiff
path: root/arch/mips/ath79
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/ath79')
-rw-r--r--arch/mips/ath79/Makefile2
-rw-r--r--arch/mips/ath79/common.h3
-rw-r--r--arch/mips/ath79/gpio.c279
-rw-r--r--arch/mips/ath79/irq.c49
-rw-r--r--arch/mips/ath79/setup.c2
5 files changed, 28 insertions, 307 deletions
diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
index 5c9ff692f..fcc382cfc 100644
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -8,7 +8,7 @@
# under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation.
-obj-y := prom.o setup.o irq.o common.o clock.o gpio.o
+obj-y := prom.o setup.o irq.o common.o clock.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_PCI) += pci.o
diff --git a/arch/mips/ath79/common.h b/arch/mips/ath79/common.h
index e5ea71277..ca7cc19ad 100644
--- a/arch/mips/ath79/common.h
+++ b/arch/mips/ath79/common.h
@@ -25,9 +25,6 @@ unsigned long ath79_get_sys_clk_rate(const char *id);
void ath79_ddr_ctrl_init(void);
void ath79_ddr_wb_flush(unsigned int reg);
-void ath79_gpio_function_enable(u32 mask);
-void ath79_gpio_function_disable(u32 mask);
-void ath79_gpio_function_setup(u32 set, u32 clear);
void ath79_gpio_init(void);
#endif /* __ATH79_COMMON_H */
diff --git a/arch/mips/ath79/gpio.c b/arch/mips/ath79/gpio.c
deleted file mode 100644
index f59ccb265..000000000
--- a/arch/mips/ath79/gpio.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * Atheros AR71XX/AR724X/AR913X GPIO API support
- *
- * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
- * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
- * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- * Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/gpio.h>
-#include <linux/platform_data/gpio-ath79.h>
-#include <linux/of_device.h>
-
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include <asm/mach-ath79/ath79.h>
-#include "common.h"
-
-static void __iomem *ath79_gpio_base;
-static u32 ath79_gpio_count;
-static DEFINE_SPINLOCK(ath79_gpio_lock);
-
-static void __ath79_gpio_set_value(unsigned gpio, int value)
-{
- void __iomem *base = ath79_gpio_base;
-
- if (value)
- __raw_writel(1 << gpio, base + AR71XX_GPIO_REG_SET);
- else
- __raw_writel(1 << gpio, base + AR71XX_GPIO_REG_CLEAR);
-}
-
-static int __ath79_gpio_get_value(unsigned gpio)
-{
- return (__raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_IN) >> gpio) & 1;
-}
-
-static int ath79_gpio_get_value(struct gpio_chip *chip, unsigned offset)
-{
- return __ath79_gpio_get_value(offset);
-}
-
-static void ath79_gpio_set_value(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- __ath79_gpio_set_value(offset, value);
-}
-
-static int ath79_gpio_direction_input(struct gpio_chip *chip,
- unsigned offset)
-{
- void __iomem *base = ath79_gpio_base;
- unsigned long flags;
-
- spin_lock_irqsave(&ath79_gpio_lock, flags);
-
- __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) & ~(1 << offset),
- base + AR71XX_GPIO_REG_OE);
-
- spin_unlock_irqrestore(&ath79_gpio_lock, flags);
-
- return 0;
-}
-
-static int ath79_gpio_direction_output(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- void __iomem *base = ath79_gpio_base;
- unsigned long flags;
-
- spin_lock_irqsave(&ath79_gpio_lock, flags);
-
- if (value)
- __raw_writel(1 << offset, base + AR71XX_GPIO_REG_SET);
- else
- __raw_writel(1 << offset, base + AR71XX_GPIO_REG_CLEAR);
-
- __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) | (1 << offset),
- base + AR71XX_GPIO_REG_OE);
-
- spin_unlock_irqrestore(&ath79_gpio_lock, flags);
-
- return 0;
-}
-
-static int ar934x_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
- void __iomem *base = ath79_gpio_base;
- unsigned long flags;
-
- spin_lock_irqsave(&ath79_gpio_lock, flags);
-
- __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) | (1 << offset),
- base + AR71XX_GPIO_REG_OE);
-
- spin_unlock_irqrestore(&ath79_gpio_lock, flags);
-
- return 0;
-}
-
-static int ar934x_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
- int value)
-{
- void __iomem *base = ath79_gpio_base;
- unsigned long flags;
-
- spin_lock_irqsave(&ath79_gpio_lock, flags);
-
- if (value)
- __raw_writel(1 << offset, base + AR71XX_GPIO_REG_SET);
- else
- __raw_writel(1 << offset, base + AR71XX_GPIO_REG_CLEAR);
-
- __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) & ~(1 << offset),
- base + AR71XX_GPIO_REG_OE);
-
- spin_unlock_irqrestore(&ath79_gpio_lock, flags);
-
- return 0;
-}
-
-static struct gpio_chip ath79_gpio_chip = {
- .label = "ath79",
- .get = ath79_gpio_get_value,
- .set = ath79_gpio_set_value,
- .direction_input = ath79_gpio_direction_input,
- .direction_output = ath79_gpio_direction_output,
- .base = 0,
-};
-
-static void __iomem *ath79_gpio_get_function_reg(void)
-{
- u32 reg = 0;
-
- if (soc_is_ar71xx() ||
- soc_is_ar724x() ||
- soc_is_ar913x() ||
- soc_is_ar933x())
- reg = AR71XX_GPIO_REG_FUNC;
- else if (soc_is_ar934x())
- reg = AR934X_GPIO_REG_FUNC;
- else
- BUG();
-
- return ath79_gpio_base + reg;
-}
-
-void ath79_gpio_function_setup(u32 set, u32 clear)
-{
- void __iomem *reg = ath79_gpio_get_function_reg();
- unsigned long flags;
-
- spin_lock_irqsave(&ath79_gpio_lock, flags);
-
- __raw_writel((__raw_readl(reg) & ~clear) | set, reg);
- /* flush write */
- __raw_readl(reg);
-
- spin_unlock_irqrestore(&ath79_gpio_lock, flags);
-}
-
-void ath79_gpio_function_enable(u32 mask)
-{
- ath79_gpio_function_setup(mask, 0);
-}
-
-void ath79_gpio_function_disable(u32 mask)
-{
- ath79_gpio_function_setup(0, mask);
-}
-
-static const struct of_device_id ath79_gpio_of_match[] = {
- { .compatible = "qca,ar7100-gpio" },
- { .compatible = "qca,ar9340-gpio" },
- {},
-};
-
-static int ath79_gpio_probe(struct platform_device *pdev)
-{
- struct ath79_gpio_platform_data *pdata = pdev->dev.platform_data;
- struct device_node *np = pdev->dev.of_node;
- struct resource *res;
- bool oe_inverted;
- int err;
-
- if (np) {
- err = of_property_read_u32(np, "ngpios", &ath79_gpio_count);
- if (err) {
- dev_err(&pdev->dev, "ngpios property is not valid\n");
- return err;
- }
- if (ath79_gpio_count >= 32) {
- dev_err(&pdev->dev, "ngpios must be less than 32\n");
- return -EINVAL;
- }
- oe_inverted = of_device_is_compatible(np, "qca,ar9340-gpio");
- } else if (pdata) {
- ath79_gpio_count = pdata->ngpios;
- oe_inverted = pdata->oe_inverted;
- } else {
- dev_err(&pdev->dev, "No DT node or platform data found\n");
- return -EINVAL;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- ath79_gpio_base = devm_ioremap_nocache(
- &pdev->dev, res->start, resource_size(res));
- if (!ath79_gpio_base)
- return -ENOMEM;
-
- ath79_gpio_chip.dev = &pdev->dev;
- ath79_gpio_chip.ngpio = ath79_gpio_count;
- if (oe_inverted) {
- ath79_gpio_chip.direction_input = ar934x_gpio_direction_input;
- ath79_gpio_chip.direction_output = ar934x_gpio_direction_output;
- }
-
- err = gpiochip_add(&ath79_gpio_chip);
- if (err) {
- dev_err(&pdev->dev,
- "cannot add AR71xx GPIO chip, error=%d", err);
- return err;
- }
-
- return 0;
-}
-
-static struct platform_driver ath79_gpio_driver = {
- .driver = {
- .name = "ath79-gpio",
- .of_match_table = ath79_gpio_of_match,
- },
- .probe = ath79_gpio_probe,
-};
-
-module_platform_driver(ath79_gpio_driver);
-
-int gpio_get_value(unsigned gpio)
-{
- if (gpio < ath79_gpio_count)
- return __ath79_gpio_get_value(gpio);
-
- return __gpio_get_value(gpio);
-}
-EXPORT_SYMBOL(gpio_get_value);
-
-void gpio_set_value(unsigned gpio, int value)
-{
- if (gpio < ath79_gpio_count)
- __ath79_gpio_set_value(gpio, value);
- else
- __gpio_set_value(gpio, value);
-}
-EXPORT_SYMBOL(gpio_set_value);
-
-int gpio_to_irq(unsigned gpio)
-{
- /* FIXME */
- return -EINVAL;
-}
-EXPORT_SYMBOL(gpio_to_irq);
-
-int irq_to_gpio(unsigned irq)
-{
- /* FIXME */
- return -EINVAL;
-}
-EXPORT_SYMBOL(irq_to_gpio);
diff --git a/arch/mips/ath79/irq.c b/arch/mips/ath79/irq.c
index afb009603..eeb3953ed 100644
--- a/arch/mips/ath79/irq.c
+++ b/arch/mips/ath79/irq.c
@@ -17,7 +17,6 @@
#include <linux/interrupt.h>
#include <linux/irqchip.h>
#include <linux/of_irq.h>
-#include "../../../drivers/irqchip/irqchip.h"
#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
@@ -27,7 +26,7 @@
#include "common.h"
#include "machtypes.h"
-static void ath79_misc_irq_handler(unsigned int irq, struct irq_desc *desc)
+static void ath79_misc_irq_handler(struct irq_desc *desc)
{
void __iomem *base = ath79_reset_base;
u32 pending;
@@ -120,12 +119,10 @@ static void __init ath79_misc_irq_init(void)
irq_set_chained_handler(ATH79_CPU_IRQ(6), ath79_misc_irq_handler);
}
-static void ar934x_ip2_irq_dispatch(unsigned int irq, struct irq_desc *desc)
+static void ar934x_ip2_irq_dispatch(struct irq_desc *desc)
{
u32 status;
- disable_irq_nosync(irq);
-
status = ath79_reset_rr(AR934X_RESET_REG_PCIE_WMAC_INT_STATUS);
if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL) {
@@ -137,8 +134,6 @@ static void ar934x_ip2_irq_dispatch(unsigned int irq, struct irq_desc *desc)
} else {
spurious_interrupt();
}
-
- enable_irq(irq);
}
static void ar934x_ip2_irq_init(void)
@@ -153,18 +148,16 @@ static void ar934x_ip2_irq_init(void)
irq_set_chained_handler(ATH79_CPU_IRQ(2), ar934x_ip2_irq_dispatch);
}
-static void qca955x_ip2_irq_dispatch(unsigned int irq, struct irq_desc *desc)
+static void qca955x_ip2_irq_dispatch(struct irq_desc *desc)
{
u32 status;
- disable_irq_nosync(irq);
-
status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS);
status &= QCA955X_EXT_INT_PCIE_RC1_ALL | QCA955X_EXT_INT_WMAC_ALL;
if (status == 0) {
spurious_interrupt();
- goto enable;
+ return;
}
if (status & QCA955X_EXT_INT_PCIE_RC1_ALL) {
@@ -176,17 +169,12 @@ static void qca955x_ip2_irq_dispatch(unsigned int irq, struct irq_desc *desc)
/* TODO: flush DDR? */
generic_handle_irq(ATH79_IP2_IRQ(1));
}
-
-enable:
- enable_irq(irq);
}
-static void qca955x_ip3_irq_dispatch(unsigned int irq, struct irq_desc *desc)
+static void qca955x_ip3_irq_dispatch(struct irq_desc *desc)
{
u32 status;
- disable_irq_nosync(irq);
-
status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS);
status &= QCA955X_EXT_INT_PCIE_RC2_ALL |
QCA955X_EXT_INT_USB1 |
@@ -194,7 +182,7 @@ static void qca955x_ip3_irq_dispatch(unsigned int irq, struct irq_desc *desc)
if (status == 0) {
spurious_interrupt();
- goto enable;
+ return;
}
if (status & QCA955X_EXT_INT_USB1) {
@@ -211,9 +199,6 @@ static void qca955x_ip3_irq_dispatch(unsigned int irq, struct irq_desc *desc)
/* TODO: flush DDR? */
generic_handle_irq(ATH79_IP3_IRQ(2));
}
-
-enable:
- enable_irq(irq);
}
static void qca955x_irq_init(void)
@@ -308,8 +293,26 @@ static int __init ath79_misc_intc_of_init(
return 0;
}
-IRQCHIP_DECLARE(ath79_misc_intc, "qca,ar7100-misc-intc",
- ath79_misc_intc_of_init);
+
+static int __init ar7100_misc_intc_of_init(
+ struct device_node *node, struct device_node *parent)
+{
+ ath79_misc_irq_chip.irq_mask_ack = ar71xx_misc_irq_mask;
+ return ath79_misc_intc_of_init(node, parent);
+}
+
+IRQCHIP_DECLARE(ar7100_misc_intc, "qca,ar7100-misc-intc",
+ ar7100_misc_intc_of_init);
+
+static int __init ar7240_misc_intc_of_init(
+ struct device_node *node, struct device_node *parent)
+{
+ ath79_misc_irq_chip.irq_ack = ar724x_misc_irq_ack;
+ return ath79_misc_intc_of_init(node, parent);
+}
+
+IRQCHIP_DECLARE(ar7240_misc_intc, "qca,ar7240-misc-intc",
+ ar7240_misc_intc_of_init);
static int __init ar79_cpu_intc_of_init(
struct device_node *node, struct device_node *parent)
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 1ba21204e..9a0013703 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -216,9 +216,9 @@ void __init plat_mem_setup(void)
AR71XX_RESET_SIZE);
ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
AR71XX_PLL_SIZE);
+ ath79_detect_sys_type();
ath79_ddr_ctrl_init();
- ath79_detect_sys_type();
if (mips_machtype != ATH79_MACH_GENERIC_OF)
detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX);