@@ -1 +1 @@
-obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o
+obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o intpol.o
new file mode 100644
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2014 Mediatek Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef __MEDIATEK_COMMON_H__
+#define __MEDIATEK_COMMON_H__
+
+extern char init_intpol(void);
+
+#endif /* __MEDIATEK_COMMON_H__ */
new file mode 100644
@@ -0,0 +1,61 @@
+/*
+ * This file contains common code that is intended to be used across
+ * boards so that it's not replicated.
+ *
+ * Copyright (C) 2014 Mediatek Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqchip/arm-gic.h>
+
+#define GIC_HW_IRQ_BASE 32
+#define INT_POL_INDEX(a) ((a) - GIC_HW_IRQ_BASE)
+
+static void __iomem *int_pol_base;
+
+static int mtk_int_pol_set_type(struct irq_data *d, unsigned int type)
+{
+ unsigned int irq = d->hwirq;
+ u32 offset, reg_index, value;
+
+ offset = INT_POL_INDEX(irq) & 0x1F;
+ reg_index = INT_POL_INDEX(irq) >> 5;
+
+ /* This arch extension was called with irq_controller_lock held,
+ so the read-modify-write will be atomic */
+ value = readl(int_pol_base + reg_index * 4);
+ if (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_EDGE_FALLING)
+ value |= (1 << offset);
+ else
+ value &= ~(1 << offset);
+ writel(value, int_pol_base + reg_index * 4);
+
+ return 0;
+}
+
+void init_intpol(void)
+{
+ struct device_node *node;
+
+ node = of_find_compatible_node(NULL, NULL, "mediatek,mt6577-intpol");
+ if (!node)
+ return;
+
+ int_pol_base = of_io_request_and_map(node, 0, "intpol");
+ if (IS_ERR(int_pol_base)) {
+ pr_warn("Can't get resource\n");
+ return;
+ }
+
+ gic_arch_extn.irq_set_type = mtk_int_pol_set_type;
+}
@@ -16,6 +16,15 @@
*/
#include <linux/init.h>
#include <asm/mach/arch.h>
+#include <linux/irqchip.h>
+
+#include "common.h"
+
+static void __init mediatek_init_irq(void)
+{
+ init_intpol();
+ irqchip_init();
+}
static const char * const mediatek_board_dt_compat[] = {
"mediatek,mt6589",
@@ -26,4 +35,5 @@ static const char * const mediatek_board_dt_compat[] = {
DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)")
.dt_compat = mediatek_board_dt_compat,
+ .init_irq = mediatek_init_irq,
MACHINE_END