Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 996 insertions, 0 deletions

diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
new file mode 100644
index 000000000..da9f92200
--- /dev/null
+++ b/arch/mips/alchemy/common/irq.c
@@ -0,0 +1,996 @@
+/*
+ * Copyright 2001, 2007-2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
+ *
+ *  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  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/export.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/syscore_ops.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/gpio-au1300.h>
+
+/* Interrupt Controller register offsets */
+#define IC_CFG0RD	0x40
+#define IC_CFG0SET	0x40
+#define IC_CFG0CLR	0x44
+#define IC_CFG1RD	0x48
+#define IC_CFG1SET	0x48
+#define IC_CFG1CLR	0x4C
+#define IC_CFG2RD	0x50
+#define IC_CFG2SET	0x50
+#define IC_CFG2CLR	0x54
+#define IC_REQ0INT	0x54
+#define IC_SRCRD	0x58
+#define IC_SRCSET	0x58
+#define IC_SRCCLR	0x5C
+#define IC_REQ1INT	0x5C
+#define IC_ASSIGNRD	0x60
+#define IC_ASSIGNSET	0x60
+#define IC_ASSIGNCLR	0x64
+#define IC_WAKERD	0x68
+#define IC_WAKESET	0x68
+#define IC_WAKECLR	0x6C
+#define IC_MASKRD	0x70
+#define IC_MASKSET	0x70
+#define IC_MASKCLR	0x74
+#define IC_RISINGRD	0x78
+#define IC_RISINGCLR	0x78
+#define IC_FALLINGRD	0x7C
+#define IC_FALLINGCLR	0x7C
+#define IC_TESTBIT	0x80
+
+/* per-processor fixed function irqs */
+struct alchemy_irqmap {
+	int irq;	/* linux IRQ number */
+	int type;	/* IRQ_TYPE_ */
+	int prio;	/* irq priority, 0 highest, 3 lowest */
+	int internal;	/* GPIC: internal source (no ext. pin)? */
+};
+
+static int au1x_ic_settype(struct irq_data *d, unsigned int type);
+static int au1300_gpic_settype(struct irq_data *d, unsigned int type);
+
+
+/* NOTE on interrupt priorities: The original writers of this code said:
+ *
+ * Because of the tight timing of SETUP token to reply transactions,
+ * the USB devices-side packet complete interrupt (USB_DEV_REQ_INT)
+ * needs the highest priority.
+ */
+struct alchemy_irqmap au1000_irqmap[] __initdata = {
+	{ AU1000_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_UART2_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_SSI0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_SSI1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
+	{ AU1000_IRDA_TX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_IRDA_RX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
+	{ AU1000_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1000_ACSYNC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1000_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_MAC1_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1000_AC97C_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ -1, },
+};
+
+struct alchemy_irqmap au1500_irqmap[] __initdata = {
+	{ AU1500_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_PCI_INTA,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1500_PCI_INTB,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1500_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_PCI_INTC,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1500_PCI_INTD,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1500_DMA_INT_BASE,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
+	{ AU1500_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
+	{ AU1500_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1500_ACSYNC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1500_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_MAC1_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1500_AC97C_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ -1, },
+};
+
+struct alchemy_irqmap au1100_irqmap[] __initdata = {
+	{ AU1100_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_SD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_SSI0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_SSI1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
+	{ AU1100_IRDA_TX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_IRDA_RX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
+	{ AU1100_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1100_ACSYNC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1100_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_LCD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1100_AC97C_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ -1, },
+};
+
+struct alchemy_irqmap au1550_irqmap[] __initdata = {
+	{ AU1550_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_PCI_INTA,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1550_PCI_INTB,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1550_DDMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_CRYPTO_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_PCI_INTC,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1550_PCI_INTD,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1550_PCI_RST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1550_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_PSC0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_PSC1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_PSC2_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_PSC3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
+	{ AU1550_NAND_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
+	{ AU1550_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1550_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
+	{ AU1550_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1550_MAC1_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ -1, },
+};
+
+struct alchemy_irqmap au1200_irqmap[] __initdata = {
+	{ AU1200_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_SWT_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_SD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_DDMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_MAE_BE_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_MAE_FE_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_PSC0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_PSC1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_AES_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_CAMERA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
+	{ AU1200_NAND_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
+	{ AU1200_USB_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_LCD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ AU1200_MAE_BOTH_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
+	{ -1, },
+};
+
+static struct alchemy_irqmap au1300_irqmap[] __initdata = {
+	/* multifunction: gpio pin or device */
+	{ AU1300_UART1_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_UART2_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_UART3_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_SD1_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_SD2_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_PSC0_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_PSC1_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_PSC2_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_PSC3_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	{ AU1300_NAND_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
+	/* au1300 internal */
+	{ AU1300_DDMA_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_MMU_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_MPU_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_GPU_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_UDMA_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_TOY_INT,	 IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_RTC_INT,	 IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING,	0, 1, },
+	{ AU1300_UART0_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_SD0_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_USB_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_LCD_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_BSA_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_MPE_INT,	 IRQ_TYPE_EDGE_RISING,	1, 1, },
+	{ AU1300_ITE_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_AES_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ AU1300_CIM_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
+	{ -1, },	/* terminator */
+};
+
+/******************************************************************************/
+
+static void au1x_ic0_unmask(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
+
+	__raw_writel(1 << bit, base + IC_MASKSET);
+	__raw_writel(1 << bit, base + IC_WAKESET);
+	wmb();
+}
+
+static void au1x_ic1_unmask(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
+
+	__raw_writel(1 << bit, base + IC_MASKSET);
+	__raw_writel(1 << bit, base + IC_WAKESET);
+	wmb();
+}
+
+static void au1x_ic0_mask(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
+
+	__raw_writel(1 << bit, base + IC_MASKCLR);
+	__raw_writel(1 << bit, base + IC_WAKECLR);
+	wmb();
+}
+
+static void au1x_ic1_mask(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
+
+	__raw_writel(1 << bit, base + IC_MASKCLR);
+	__raw_writel(1 << bit, base + IC_WAKECLR);
+	wmb();
+}
+
+static void au1x_ic0_ack(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
+
+	/*
+	 * This may assume that we don't get interrupts from
+	 * both edges at once, or if we do, that we don't care.
+	 */
+	__raw_writel(1 << bit, base + IC_FALLINGCLR);
+	__raw_writel(1 << bit, base + IC_RISINGCLR);
+	wmb();
+}
+
+static void au1x_ic1_ack(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
+
+	/*
+	 * This may assume that we don't get interrupts from
+	 * both edges at once, or if we do, that we don't care.
+	 */
+	__raw_writel(1 << bit, base + IC_FALLINGCLR);
+	__raw_writel(1 << bit, base + IC_RISINGCLR);
+	wmb();
+}
+
+static void au1x_ic0_maskack(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
+
+	__raw_writel(1 << bit, base + IC_WAKECLR);
+	__raw_writel(1 << bit, base + IC_MASKCLR);
+	__raw_writel(1 << bit, base + IC_RISINGCLR);
+	__raw_writel(1 << bit, base + IC_FALLINGCLR);
+	wmb();
+}
+
+static void au1x_ic1_maskack(struct irq_data *d)
+{
+	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
+
+	__raw_writel(1 << bit, base + IC_WAKECLR);
+	__raw_writel(1 << bit, base + IC_MASKCLR);
+	__raw_writel(1 << bit, base + IC_RISINGCLR);
+	__raw_writel(1 << bit, base + IC_FALLINGCLR);
+	wmb();
+}
+
+static int au1x_ic1_setwake(struct irq_data *d, unsigned int on)
+{
+	int bit = d->irq - AU1000_INTC1_INT_BASE;
+	unsigned long wakemsk, flags;
+
+	/* only GPIO 0-7 can act as wakeup source.  Fortunately these
+	 * are wired up identically on all supported variants.
+	 */
+	if ((bit < 0) || (bit > 7))
+		return -EINVAL;
+
+	local_irq_save(flags);
+	wakemsk = alchemy_rdsys(AU1000_SYS_WAKEMSK);
+	if (on)
+		wakemsk |= 1 << bit;
+	else
+		wakemsk &= ~(1 << bit);
+	alchemy_wrsys(wakemsk, AU1000_SYS_WAKEMSK);
+	local_irq_restore(flags);
+
+	return 0;
+}
+
+/*
+ * irq_chips for both ICs; this way the mask handlers can be
+ * as short as possible.
+ */
+static struct irq_chip au1x_ic0_chip = {
+	.name		= "Alchemy-IC0",
+	.irq_ack	= au1x_ic0_ack,
+	.irq_mask	= au1x_ic0_mask,
+	.irq_mask_ack	= au1x_ic0_maskack,
+	.irq_unmask	= au1x_ic0_unmask,
+	.irq_set_type	= au1x_ic_settype,
+};
+
+static struct irq_chip au1x_ic1_chip = {
+	.name		= "Alchemy-IC1",
+	.irq_ack	= au1x_ic1_ack,
+	.irq_mask	= au1x_ic1_mask,
+	.irq_mask_ack	= au1x_ic1_maskack,
+	.irq_unmask	= au1x_ic1_unmask,
+	.irq_set_type	= au1x_ic_settype,
+	.irq_set_wake	= au1x_ic1_setwake,
+};
+
+static int au1x_ic_settype(struct irq_data *d, unsigned int flow_type)
+{
+	struct irq_chip *chip;
+	unsigned int bit, irq = d->irq;
+	irq_flow_handler_t handler = NULL;
+	unsigned char *name = NULL;
+	void __iomem *base;
+	int ret;
+
+	if (irq >= AU1000_INTC1_INT_BASE) {
+		bit = irq - AU1000_INTC1_INT_BASE;
+		chip = &au1x_ic1_chip;
+		base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
+	} else {
+		bit = irq - AU1000_INTC0_INT_BASE;
+		chip = &au1x_ic0_chip;
+		base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
+	}
+
+	if (bit > 31)
+		return -EINVAL;
+
+	ret = 0;
+
+	switch (flow_type) {	/* cfgregs 2:1:0 */
+	case IRQ_TYPE_EDGE_RISING:	/* 0:0:1 */
+		__raw_writel(1 << bit, base + IC_CFG2CLR);
+		__raw_writel(1 << bit, base + IC_CFG1CLR);
+		__raw_writel(1 << bit, base + IC_CFG0SET);
+		handler = handle_edge_irq;
+		name = "riseedge";
+		break;
+	case IRQ_TYPE_EDGE_FALLING:	/* 0:1:0 */
+		__raw_writel(1 << bit, base + IC_CFG2CLR);
+		__raw_writel(1 << bit, base + IC_CFG1SET);
+		__raw_writel(1 << bit, base + IC_CFG0CLR);
+		handler = handle_edge_irq;
+		name = "falledge";
+		break;
+	case IRQ_TYPE_EDGE_BOTH:	/* 0:1:1 */
+		__raw_writel(1 << bit, base + IC_CFG2CLR);
+		__raw_writel(1 << bit, base + IC_CFG1SET);
+		__raw_writel(1 << bit, base + IC_CFG0SET);
+		handler = handle_edge_irq;
+		name = "bothedge";
+		break;
+	case IRQ_TYPE_LEVEL_HIGH:	/* 1:0:1 */
+		__raw_writel(1 << bit, base + IC_CFG2SET);
+		__raw_writel(1 << bit, base + IC_CFG1CLR);
+		__raw_writel(1 << bit, base + IC_CFG0SET);
+		handler = handle_level_irq;
+		name = "hilevel";
+		break;
+	case IRQ_TYPE_LEVEL_LOW:	/* 1:1:0 */
+		__raw_writel(1 << bit, base + IC_CFG2SET);
+		__raw_writel(1 << bit, base + IC_CFG1SET);
+		__raw_writel(1 << bit, base + IC_CFG0CLR);
+		handler = handle_level_irq;
+		name = "lowlevel";
+		break;
+	case IRQ_TYPE_NONE:		/* 0:0:0 */
+		__raw_writel(1 << bit, base + IC_CFG2CLR);
+		__raw_writel(1 << bit, base + IC_CFG1CLR);
+		__raw_writel(1 << bit, base + IC_CFG0CLR);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	irq_set_chip_handler_name_locked(d, chip, handler, name);
+
+	wmb();
+
+	return ret;
+}
+
+/******************************************************************************/
+
+/*
+ * au1300_gpic_chgcfg - change PIN configuration.
+ * @gpio:	pin to change (0-based GPIO number from datasheet).
+ * @clr:	clear all bits set in 'clr'.
+ * @set:	set these bits.
+ *
+ * modifies a pins' configuration register, bits set in @clr will
+ * be cleared in the register, bits in @set will be set.
+ */
+static inline void au1300_gpic_chgcfg(unsigned int gpio,
+				      unsigned long clr,
+				      unsigned long set)
+{
+	void __iomem *r = AU1300_GPIC_ADDR;
+	unsigned long l;
+
+	r += gpio * 4;	/* offset into pin config array */
+	l = __raw_readl(r + AU1300_GPIC_PINCFG);
+	l &= ~clr;
+	l |= set;
+	__raw_writel(l, r + AU1300_GPIC_PINCFG);
+	wmb();
+}
+
+/*
+ * au1300_pinfunc_to_gpio - assign a pin as GPIO input (GPIO ctrl).
+ * @pin:	pin (0-based GPIO number from datasheet).
+ *
+ * Assigns a GPIO pin to the GPIO controller, so its level can either
+ * be read or set through the generic GPIO functions.
+ * If you need a GPOUT, use au1300_gpio_set_value(pin, 0/1).
+ * REVISIT: is this function really necessary?
+ */
+void au1300_pinfunc_to_gpio(enum au1300_multifunc_pins gpio)
+{
+	au1300_gpio_direction_input(gpio + AU1300_GPIO_BASE);
+}
+EXPORT_SYMBOL_GPL(au1300_pinfunc_to_gpio);
+
+/*
+ * au1300_pinfunc_to_dev - assign a pin to the device function.
+ * @pin:	pin (0-based GPIO number from datasheet).
+ *
+ * Assigns a GPIO pin to its associated device function; the pin will be
+ * driven by the device and not through GPIO functions.
+ */
+void au1300_pinfunc_to_dev(enum au1300_multifunc_pins gpio)
+{
+	void __iomem *r = AU1300_GPIC_ADDR;
+	unsigned long bit;
+
+	r += GPIC_GPIO_BANKOFF(gpio);
+	bit = GPIC_GPIO_TO_BIT(gpio);
+	__raw_writel(bit, r + AU1300_GPIC_DEVSEL);
+	wmb();
+}
+EXPORT_SYMBOL_GPL(au1300_pinfunc_to_dev);
+
+/*
+ * au1300_set_irq_priority -  set internal priority of IRQ.
+ * @irq:	irq to set priority (linux irq number).
+ * @p:		priority (0 = highest, 3 = lowest).
+ */
+void au1300_set_irq_priority(unsigned int irq, int p)
+{
+	irq -= ALCHEMY_GPIC_INT_BASE;
+	au1300_gpic_chgcfg(irq, GPIC_CFG_IL_MASK, GPIC_CFG_IL_SET(p));
+}
+EXPORT_SYMBOL_GPL(au1300_set_irq_priority);
+
+/*
+ * au1300_set_dbdma_gpio - assign a gpio to one of the DBDMA triggers.
+ * @dchan:	dbdma trigger select (0, 1).
+ * @gpio:	pin to assign as trigger.
+ *
+ * DBDMA controller has 2 external trigger sources; this function
+ * assigns a GPIO to the selected trigger.
+ */
+void au1300_set_dbdma_gpio(int dchan, unsigned int gpio)
+{
+	unsigned long r;
+
+	if ((dchan >= 0) && (dchan <= 1)) {
+		r = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
+		r &= ~(0xff << (8 * dchan));
+		r |= (gpio & 0x7f) << (8 * dchan);
+		__raw_writel(r, AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
+		wmb();
+	}
+}
+
+static inline void gpic_pin_set_idlewake(unsigned int gpio, int allow)
+{
+	au1300_gpic_chgcfg(gpio, GPIC_CFG_IDLEWAKE,
+			   allow ? GPIC_CFG_IDLEWAKE : 0);
+}
+
+static void au1300_gpic_mask(struct irq_data *d)
+{
+	void __iomem *r = AU1300_GPIC_ADDR;
+	unsigned long bit, irq = d->irq;
+
+	irq -= ALCHEMY_GPIC_INT_BASE;
+	r += GPIC_GPIO_BANKOFF(irq);
+	bit = GPIC_GPIO_TO_BIT(irq);
+	__raw_writel(bit, r + AU1300_GPIC_IDIS);
+	wmb();
+
+	gpic_pin_set_idlewake(irq, 0);
+}
+
+static void au1300_gpic_unmask(struct irq_data *d)
+{
+	void __iomem *r = AU1300_GPIC_ADDR;
+	unsigned long bit, irq = d->irq;
+
+	irq -= ALCHEMY_GPIC_INT_BASE;
+
+	gpic_pin_set_idlewake(irq, 1);
+
+	r += GPIC_GPIO_BANKOFF(irq);
+	bit = GPIC_GPIO_TO_BIT(irq);
+	__raw_writel(bit, r + AU1300_GPIC_IEN);
+	wmb();
+}
+
+static void au1300_gpic_maskack(struct irq_data *d)
+{
+	void __iomem *r = AU1300_GPIC_ADDR;
+	unsigned long bit, irq = d->irq;
+
+	irq -= ALCHEMY_GPIC_INT_BASE;
+	r += GPIC_GPIO_BANKOFF(irq);
+	bit = GPIC_GPIO_TO_BIT(irq);
+	__raw_writel(bit, r + AU1300_GPIC_IPEND);	/* ack */
+	__raw_writel(bit, r + AU1300_GPIC_IDIS);	/* mask */
+	wmb();
+
+	gpic_pin_set_idlewake(irq, 0);
+}
+
+static void au1300_gpic_ack(struct irq_data *d)
+{
+	void __iomem *r = AU1300_GPIC_ADDR;
+	unsigned long bit, irq = d->irq;
+
+	irq -= ALCHEMY_GPIC_INT_BASE;
+	r += GPIC_GPIO_BANKOFF(irq);
+	bit = GPIC_GPIO_TO_BIT(irq);
+	__raw_writel(bit, r + AU1300_GPIC_IPEND);	/* ack */
+	wmb();
+}
+
+static struct irq_chip au1300_gpic = {
+	.name		= "GPIOINT",
+	.irq_ack	= au1300_gpic_ack,
+	.irq_mask	= au1300_gpic_mask,
+	.irq_mask_ack	= au1300_gpic_maskack,
+	.irq_unmask	= au1300_gpic_unmask,
+	.irq_set_type	= au1300_gpic_settype,
+};
+
+static int au1300_gpic_settype(struct irq_data *d, unsigned int type)
+{
+	unsigned long s;
+	unsigned char *name = NULL;
+	irq_flow_handler_t hdl = NULL;
+
+	switch (type) {
+	case IRQ_TYPE_LEVEL_HIGH:
+		s = GPIC_CFG_IC_LEVEL_HIGH;
+		name = "high";
+		hdl = handle_level_irq;
+		break;
+	case IRQ_TYPE_LEVEL_LOW:
+		s = GPIC_CFG_IC_LEVEL_LOW;
+		name = "low";
+		hdl = handle_level_irq;
+		break;
+	case IRQ_TYPE_EDGE_RISING:
+		s = GPIC_CFG_IC_EDGE_RISE;
+		name = "posedge";
+		hdl = handle_edge_irq;
+		break;
+	case IRQ_TYPE_EDGE_FALLING:
+		s = GPIC_CFG_IC_EDGE_FALL;
+		name = "negedge";
+		hdl = handle_edge_irq;
+		break;
+	case IRQ_TYPE_EDGE_BOTH:
+		s = GPIC_CFG_IC_EDGE_BOTH;
+		name = "bothedge";
+		hdl = handle_edge_irq;
+		break;
+	case IRQ_TYPE_NONE:
+		s = GPIC_CFG_IC_OFF;
+		name = "disabled";
+		hdl = handle_level_irq;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	irq_set_chip_handler_name_locked(d, &au1300_gpic, hdl, name);
+
+	au1300_gpic_chgcfg(d->irq - ALCHEMY_GPIC_INT_BASE, GPIC_CFG_IC_MASK, s);
+
+	return 0;
+}
+
+/******************************************************************************/
+
+static inline void ic_init(void __iomem *base)
+{
+	/* initialize interrupt controller to a safe state */
+	__raw_writel(0xffffffff, base + IC_CFG0CLR);
+	__raw_writel(0xffffffff, base + IC_CFG1CLR);
+	__raw_writel(0xffffffff, base + IC_CFG2CLR);
+	__raw_writel(0xffffffff, base + IC_MASKCLR);
+	__raw_writel(0xffffffff, base + IC_ASSIGNCLR);
+	__raw_writel(0xffffffff, base + IC_WAKECLR);
+	__raw_writel(0xffffffff, base + IC_SRCSET);
+	__raw_writel(0xffffffff, base + IC_FALLINGCLR);
+	__raw_writel(0xffffffff, base + IC_RISINGCLR);
+	__raw_writel(0x00000000, base + IC_TESTBIT);
+	wmb();
+}
+
+static unsigned long alchemy_gpic_pmdata[ALCHEMY_GPIC_INT_NUM + 6];
+
+static inline void alchemy_ic_suspend_one(void __iomem *base, unsigned long *d)
+{
+	d[0] = __raw_readl(base + IC_CFG0RD);
+	d[1] = __raw_readl(base + IC_CFG1RD);
+	d[2] = __raw_readl(base + IC_CFG2RD);
+	d[3] = __raw_readl(base + IC_SRCRD);
+	d[4] = __raw_readl(base + IC_ASSIGNRD);
+	d[5] = __raw_readl(base + IC_WAKERD);
+	d[6] = __raw_readl(base + IC_MASKRD);
+	ic_init(base);		/* shut it up too while at it */
+}
+
+static inline void alchemy_ic_resume_one(void __iomem *base, unsigned long *d)
+{
+	ic_init(base);
+
+	__raw_writel(d[0], base + IC_CFG0SET);
+	__raw_writel(d[1], base + IC_CFG1SET);
+	__raw_writel(d[2], base + IC_CFG2SET);
+	__raw_writel(d[3], base + IC_SRCSET);
+	__raw_writel(d[4], base + IC_ASSIGNSET);
+	__raw_writel(d[5], base + IC_WAKESET);
+	wmb();
+
+	__raw_writel(d[6], base + IC_MASKSET);
+	wmb();
+}
+
+static int alchemy_ic_suspend(void)
+{
+	alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
+			       alchemy_gpic_pmdata);
+	alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
+			       &alchemy_gpic_pmdata[7]);
+	return 0;
+}
+
+static void alchemy_ic_resume(void)
+{
+	alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
+			      &alchemy_gpic_pmdata[7]);
+	alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
+			      alchemy_gpic_pmdata);
+}
+
+static int alchemy_gpic_suspend(void)
+{
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
+	int i;
+
+	/* save 4 interrupt mask status registers */
+	alchemy_gpic_pmdata[0] = __raw_readl(base + AU1300_GPIC_IEN + 0x0);
+	alchemy_gpic_pmdata[1] = __raw_readl(base + AU1300_GPIC_IEN + 0x4);
+	alchemy_gpic_pmdata[2] = __raw_readl(base + AU1300_GPIC_IEN + 0x8);
+	alchemy_gpic_pmdata[3] = __raw_readl(base + AU1300_GPIC_IEN + 0xc);
+
+	/* save misc register(s) */
+	alchemy_gpic_pmdata[4] = __raw_readl(base + AU1300_GPIC_DMASEL);
+
+	/* molto silenzioso */
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
+	wmb();
+
+	/* save pin/int-type configuration */
+	base += AU1300_GPIC_PINCFG;
+	for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
+		alchemy_gpic_pmdata[i + 5] = __raw_readl(base + (i << 2));
+
+	wmb();
+
+	return 0;
+}
+
+static void alchemy_gpic_resume(void)
+{
+	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
+	int i;
+
+	/* disable all first */
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
+	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
+	wmb();
+
+	/* restore pin/int-type configurations */
+	base += AU1300_GPIC_PINCFG;
+	for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
+		__raw_writel(alchemy_gpic_pmdata[i + 5], base + (i << 2));
+	wmb();
+
+	/* restore misc register(s) */
+	base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
+	__raw_writel(alchemy_gpic_pmdata[4], base + AU1300_GPIC_DMASEL);
+	wmb();
+
+	/* finally restore masks */
+	__raw_writel(alchemy_gpic_pmdata[0], base + AU1300_GPIC_IEN + 0x0);
+	__raw_writel(alchemy_gpic_pmdata[1], base + AU1300_GPIC_IEN + 0x4);
+	__raw_writel(alchemy_gpic_pmdata[2], base + AU1300_GPIC_IEN + 0x8);
+	__raw_writel(alchemy_gpic_pmdata[3], base + AU1300_GPIC_IEN + 0xc);
+	wmb();
+}
+
+static struct syscore_ops alchemy_ic_pmops = {
+	.suspend	= alchemy_ic_suspend,
+	.resume		= alchemy_ic_resume,
+};
+
+static struct syscore_ops alchemy_gpic_pmops = {
+	.suspend	= alchemy_gpic_suspend,
+	.resume		= alchemy_gpic_resume,
+};
+
+/******************************************************************************/
+
+/* create chained handlers for the 4 IC requests to the MIPS IRQ ctrl */
+#define DISP(name, base, addr)						      \
+static void au1000_##name##_dispatch(struct irq_desc *d)		      \
+{									      \
+	unsigned long r = __raw_readl((void __iomem *)KSEG1ADDR(addr));	      \
+	if (likely(r))							      \
+		generic_handle_irq(base + __ffs(r));			      \
+	else								      \
+		spurious_interrupt();					      \
+}
+
+DISP(ic0r0, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ0INT)
+DISP(ic0r1, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ1INT)
+DISP(ic1r0, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ0INT)
+DISP(ic1r1, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ1INT)
+
+static void alchemy_gpic_dispatch(struct irq_desc *d)
+{
+	int i = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_PRIENC);
+	generic_handle_irq(ALCHEMY_GPIC_INT_BASE + i);
+}
+
+/******************************************************************************/
+
+static void __init au1000_init_irq(struct alchemy_irqmap *map)
+{
+	unsigned int bit, irq_nr;
+	void __iomem *base;
+
+	ic_init((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR));
+	ic_init((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR));
+	register_syscore_ops(&alchemy_ic_pmops);
+	mips_cpu_irq_init();
+
+	/* register all 64 possible IC0+IC1 irq sources as type "none".
+	 * Use set_irq_type() to set edge/level behaviour at runtime.
+	 */
+	for (irq_nr = AU1000_INTC0_INT_BASE;
+	     (irq_nr < AU1000_INTC0_INT_BASE + 32); irq_nr++)
+		au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);
+
+	for (irq_nr = AU1000_INTC1_INT_BASE;
+	     (irq_nr < AU1000_INTC1_INT_BASE + 32); irq_nr++)
+		au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);
+
+	/*
+	 * Initialize IC0, which is fixed per processor.
+	 */
+	while (map->irq != -1) {
+		irq_nr = map->irq;
+
+		if (irq_nr >= AU1000_INTC1_INT_BASE) {
+			bit = irq_nr - AU1000_INTC1_INT_BASE;
+			base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
+		} else {
+			bit = irq_nr - AU1000_INTC0_INT_BASE;
+			base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
+		}
+		if (map->prio == 0)
+			__raw_writel(1 << bit, base + IC_ASSIGNSET);
+
+		au1x_ic_settype(irq_get_irq_data(irq_nr), map->type);
+		++map;
+	}
+
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, au1000_ic0r0_dispatch);
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, au1000_ic0r1_dispatch);
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, au1000_ic1r0_dispatch);
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, au1000_ic1r1_dispatch);
+}
+
+static void __init alchemy_gpic_init_irq(const struct alchemy_irqmap *dints)
+{
+	int i;
+	void __iomem *bank_base;
+
+	register_syscore_ops(&alchemy_gpic_pmops);
+	mips_cpu_irq_init();
+
+	/* disable & ack all possible interrupt sources */
+	for (i = 0; i < 4; i++) {
+		bank_base = AU1300_GPIC_ADDR + (i * 4);
+		__raw_writel(~0UL, bank_base + AU1300_GPIC_IDIS);
+		wmb();
+		__raw_writel(~0UL, bank_base + AU1300_GPIC_IPEND);
+		wmb();
+	}
+
+	/* register an irq_chip for them, with 2nd highest priority */
+	for (i = ALCHEMY_GPIC_INT_BASE; i <= ALCHEMY_GPIC_INT_LAST; i++) {
+		au1300_set_irq_priority(i, 1);
+		au1300_gpic_settype(irq_get_irq_data(i), IRQ_TYPE_NONE);
+	}
+
+	/* setup known on-chip sources */
+	while ((i = dints->irq) != -1) {
+		au1300_gpic_settype(irq_get_irq_data(i), dints->type);
+		au1300_set_irq_priority(i, dints->prio);
+
+		if (dints->internal)
+			au1300_pinfunc_to_dev(i - ALCHEMY_GPIC_INT_BASE);
+
+		dints++;
+	}
+
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, alchemy_gpic_dispatch);
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, alchemy_gpic_dispatch);
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, alchemy_gpic_dispatch);
+	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, alchemy_gpic_dispatch);
+}
+
+/******************************************************************************/
+
+void __init arch_init_irq(void)
+{
+	switch (alchemy_get_cputype()) {
+	case ALCHEMY_CPU_AU1000:
+		au1000_init_irq(au1000_irqmap);
+		break;
+	case ALCHEMY_CPU_AU1500:
+		au1000_init_irq(au1500_irqmap);
+		break;
+	case ALCHEMY_CPU_AU1100:
+		au1000_init_irq(au1100_irqmap);
+		break;
+	case ALCHEMY_CPU_AU1550:
+		au1000_init_irq(au1550_irqmap);
+		break;
+	case ALCHEMY_CPU_AU1200:
+		au1000_init_irq(au1200_irqmap);
+		break;
+	case ALCHEMY_CPU_AU1300:
+		alchemy_gpic_init_irq(au1300_irqmap);
+		break;
+	default:
+		pr_err("unknown Alchemy IRQ core\n");
+		break;
+	}
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	unsigned long r = (read_c0_status() & read_c0_cause()) >> 8;
+	do_IRQ(MIPS_CPU_IRQ_BASE + __ffs(r & 0xff));
+}