[ARM] tegra: Add IRQ support

v2: fixes from Russell King
	- include linux/io.h instead of asm/io.h and mach/io.h

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>

3 files changed, 208 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 81f003dcb26c..a0d2c5ba6cd4 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -1,2 +1,3 @@
 obj-y                                   += common.o
 obj-y                                   += io.o
+obj-y                                   += irq.o
diff --git a/arch/arm/mach-tegra/include/mach/irqs.h b/arch/arm/mach-tegra/include/mach/irqs.h
new file mode 100644
index 000000000000..20f640edaa0d
--- /dev/null
+++ b/arch/arm/mach-tegra/include/mach/irqs.h
@@ -0,0 +1,173 @@
+/*
+ * arch/arm/mach-tegra/include/mach/irqs.h
+ *
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * Author:
+ *	Colin Cross <ccross@google.com>
+ *	Erik Gilling <konkers@google.com>
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_TEGRA_IRQS_H
+#define __MACH_TEGRA_IRQS_H
+
+#define INT_GIC_BASE			0
+
+#define IRQ_LOCALTIMER                  29
+
+/* Primary Interrupt Controller */
+#define INT_PRI_BASE			(INT_GIC_BASE + 32)
+#define INT_TMR1			(INT_PRI_BASE + 0)
+#define INT_TMR2			(INT_PRI_BASE + 1)
+#define INT_RTC				(INT_PRI_BASE + 2)
+#define INT_I2S2			(INT_PRI_BASE + 3)
+#define INT_SHR_SEM_INBOX_IBF		(INT_PRI_BASE + 4)
+#define INT_SHR_SEM_INBOX_IBE		(INT_PRI_BASE + 5)
+#define INT_SHR_SEM_OUTBOX_IBF		(INT_PRI_BASE + 6)
+#define INT_SHR_SEM_OUTBOX_IBE		(INT_PRI_BASE + 7)
+#define INT_VDE_UCQ_ERROR		(INT_PRI_BASE + 8)
+#define INT_VDE_SYNC_TOKEN		(INT_PRI_BASE + 9)
+#define INT_VDE_BSE_V			(INT_PRI_BASE + 10)
+#define INT_VDE_BSE_A			(INT_PRI_BASE + 11)
+#define INT_VDE_SXE			(INT_PRI_BASE + 12)
+#define INT_I2S1			(INT_PRI_BASE + 13)
+#define INT_SDMMC1			(INT_PRI_BASE + 14)
+#define INT_SDMMC2			(INT_PRI_BASE + 15)
+#define INT_XIO				(INT_PRI_BASE + 16)
+#define INT_VDE				(INT_PRI_BASE + 17)
+#define INT_AVP_UCQ			(INT_PRI_BASE + 18)
+#define INT_SDMMC3			(INT_PRI_BASE + 19)
+#define INT_USB				(INT_PRI_BASE + 20)
+#define INT_USB2			(INT_PRI_BASE + 21)
+#define INT_PRI_RES_22			(INT_PRI_BASE + 22)
+#define INT_EIDE			(INT_PRI_BASE + 23)
+#define INT_NANDFLASH			(INT_PRI_BASE + 24)
+#define INT_VCP				(INT_PRI_BASE + 25)
+#define INT_APB_DMA			(INT_PRI_BASE + 26)
+#define INT_AHB_DMA			(INT_PRI_BASE + 27)
+#define INT_GNT_0			(INT_PRI_BASE + 28)
+#define INT_GNT_1			(INT_PRI_BASE + 29)
+#define INT_OWR				(INT_PRI_BASE + 30)
+#define INT_SDMMC4			(INT_PRI_BASE + 31)
+
+/* Secondary Interrupt Controller */
+#define INT_SEC_BASE			(INT_PRI_BASE + 32)
+#define INT_GPIO1			(INT_SEC_BASE + 0)
+#define INT_GPIO2			(INT_SEC_BASE + 1)
+#define INT_GPIO3			(INT_SEC_BASE + 2)
+#define INT_GPIO4			(INT_SEC_BASE + 3)
+#define INT_UARTA			(INT_SEC_BASE + 4)
+#define INT_UARTB			(INT_SEC_BASE + 5)
+#define INT_I2C				(INT_SEC_BASE + 6)
+#define INT_SPI				(INT_SEC_BASE + 7)
+#define INT_TWC				(INT_SEC_BASE + 8)
+#define INT_TMR3			(INT_SEC_BASE + 9)
+#define INT_TMR4			(INT_SEC_BASE + 10)
+#define INT_FLOW_RSM0			(INT_SEC_BASE + 11)
+#define INT_FLOW_RSM1			(INT_SEC_BASE + 12)
+#define INT_SPDIF			(INT_SEC_BASE + 13)
+#define INT_UARTC			(INT_SEC_BASE + 14)
+#define INT_MIPI			(INT_SEC_BASE + 15)
+#define INT_EVENTA			(INT_SEC_BASE + 16)
+#define INT_EVENTB			(INT_SEC_BASE + 17)
+#define INT_EVENTC			(INT_SEC_BASE + 18)
+#define INT_EVENTD			(INT_SEC_BASE + 19)
+#define INT_VFIR			(INT_SEC_BASE + 20)
+#define INT_DVC				(INT_SEC_BASE + 21)
+#define INT_SYS_STATS_MON		(INT_SEC_BASE + 22)
+#define INT_GPIO5			(INT_SEC_BASE + 23)
+#define INT_CPU0_PMU_INTR		(INT_SEC_BASE + 24)
+#define INT_CPU2_PMU_INTR		(INT_SEC_BASE + 25)
+#define INT_SEC_RES_26			(INT_SEC_BASE + 26)
+#define INT_S_LINK1			(INT_SEC_BASE + 27)
+#define INT_APB_DMA_COP			(INT_SEC_BASE + 28)
+#define INT_AHB_DMA_COP			(INT_SEC_BASE + 29)
+#define INT_DMA_TX			(INT_SEC_BASE + 30)
+#define INT_DMA_RX			(INT_SEC_BASE + 31)
+
+/* Tertiary Interrupt Controller */
+#define INT_TRI_BASE			(INT_SEC_BASE + 32)
+#define INT_HOST1X_COP_SYNCPT		(INT_TRI_BASE + 0)
+#define INT_HOST1X_MPCORE_SYNCPT	(INT_TRI_BASE + 1)
+#define INT_HOST1X_COP_GENERAL		(INT_TRI_BASE + 2)
+#define INT_HOST1X_MPCORE_GENERAL	(INT_TRI_BASE + 3)
+#define INT_MPE_GENERAL			(INT_TRI_BASE + 4)
+#define INT_VI_GENERAL			(INT_TRI_BASE + 5)
+#define INT_EPP_GENERAL			(INT_TRI_BASE + 6)
+#define INT_ISP_GENERAL			(INT_TRI_BASE + 7)
+#define INT_2D_GENERAL			(INT_TRI_BASE + 8)
+#define INT_DISPLAY_GENERAL		(INT_TRI_BASE + 9)
+#define INT_DISPLAY_B_GENERAL		(INT_TRI_BASE + 10)
+#define INT_HDMI			(INT_TRI_BASE + 11)
+#define INT_TVO_GENERAL			(INT_TRI_BASE + 12)
+#define INT_MC_GENERAL			(INT_TRI_BASE + 13)
+#define INT_EMC_GENERAL			(INT_TRI_BASE + 14)
+#define INT_TRI_RES_15			(INT_TRI_BASE + 15)
+#define INT_TRI_RES_16			(INT_TRI_BASE + 16)
+#define INT_AC97			(INT_TRI_BASE + 17)
+#define INT_SPI_2			(INT_TRI_BASE + 18)
+#define INT_SPI_3			(INT_TRI_BASE + 19)
+#define INT_I2C2			(INT_TRI_BASE + 20)
+#define INT_KBC				(INT_TRI_BASE + 21)
+#define INT_EXTERNAL_PMU		(INT_TRI_BASE + 22)
+#define INT_GPIO6			(INT_TRI_BASE + 23)
+#define INT_TVDAC			(INT_TRI_BASE + 24)
+#define INT_GPIO7			(INT_TRI_BASE + 25)
+#define INT_UARTD			(INT_TRI_BASE + 26)
+#define INT_UARTE			(INT_TRI_BASE + 27)
+#define INT_I2C3			(INT_TRI_BASE + 28)
+#define INT_SPI_4			(INT_TRI_BASE + 29)
+#define INT_TRI_RES_30			(INT_TRI_BASE + 30)
+#define INT_SW_RESERVED			(INT_TRI_BASE + 31)
+
+/* Quaternary Interrupt Controller */
+#define INT_QUAD_BASE			(INT_TRI_BASE + 32)
+#define INT_SNOR			(INT_QUAD_BASE + 0)
+#define INT_USB3			(INT_QUAD_BASE + 1)
+#define INT_PCIE_INTR			(INT_QUAD_BASE + 2)
+#define INT_PCIE_MSI			(INT_QUAD_BASE + 3)
+#define INT_QUAD_RES_4			(INT_QUAD_BASE + 4)
+#define INT_QUAD_RES_5			(INT_QUAD_BASE + 5)
+#define INT_QUAD_RES_6			(INT_QUAD_BASE + 6)
+#define INT_QUAD_RES_7			(INT_QUAD_BASE + 7)
+#define INT_APB_DMA_CH0			(INT_QUAD_BASE + 8)
+#define INT_APB_DMA_CH1			(INT_QUAD_BASE + 9)
+#define INT_APB_DMA_CH2			(INT_QUAD_BASE + 10)
+#define INT_APB_DMA_CH3			(INT_QUAD_BASE + 11)
+#define INT_APB_DMA_CH4			(INT_QUAD_BASE + 12)
+#define INT_APB_DMA_CH5			(INT_QUAD_BASE + 13)
+#define INT_APB_DMA_CH6			(INT_QUAD_BASE + 14)
+#define INT_APB_DMA_CH7			(INT_QUAD_BASE + 15)
+#define INT_APB_DMA_CH8			(INT_QUAD_BASE + 16)
+#define INT_APB_DMA_CH9			(INT_QUAD_BASE + 17)
+#define INT_APB_DMA_CH10		(INT_QUAD_BASE + 18)
+#define INT_APB_DMA_CH11		(INT_QUAD_BASE + 19)
+#define INT_APB_DMA_CH12		(INT_QUAD_BASE + 20)
+#define INT_APB_DMA_CH13		(INT_QUAD_BASE + 21)
+#define INT_APB_DMA_CH14		(INT_QUAD_BASE + 22)
+#define INT_APB_DMA_CH15		(INT_QUAD_BASE + 23)
+#define INT_QUAD_RES_24			(INT_QUAD_BASE + 24)
+#define INT_QUAD_RES_25			(INT_QUAD_BASE + 25)
+#define INT_QUAD_RES_26			(INT_QUAD_BASE + 26)
+#define INT_QUAD_RES_27			(INT_QUAD_BASE + 27)
+#define INT_QUAD_RES_28			(INT_QUAD_BASE + 28)
+#define INT_QUAD_RES_29			(INT_QUAD_BASE + 29)
+#define INT_QUAD_RES_30			(INT_QUAD_BASE + 30)
+#define INT_QUAD_RES_31			(INT_QUAD_BASE + 31)
+
+#define INT_GPIO_BASE			(INT_QUAD_BASE + 32)
+#define INT_GPIO_NR			(28 * 8)
+
+#define NR_IRQS				(INT_GPIO_BASE + INT_GPIO_NR)
+
+#endif
diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c
new file mode 100644
index 000000000000..1fdbe708d43d
--- /dev/null
+++ b/arch/arm/mach-tegra/irq.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * Author:
+ *	Colin Cross <ccross@google.com>
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <asm/hardware/gic.h>
+
+#include <mach/iomap.h>
+
+#include "board.h"
+
+void __init tegra_init_irq(void)
+{
+	gic_dist_init(0, IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE), 29);
+	gic_cpu_init(0, IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100));
+}