projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 6c01ba44 KM |
1 | /* |
| 2 | * R8A7740 processor support | |
| 3 | * | |
| 4 | * Copyright (C) 2011 Renesas Solutions Corp. | |
| 5 | * Copyright (C) 2011 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; version 2 of the License. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 215d6cc9 | 21 | #include <linux/init.h> |
| 6c01ba44 | 22 | #include <linux/io.h> |
| 0b7d7820 | 23 | #include <linux/irqchip/arm-gic.h> |
| 6c01ba44 KM |
24 | |
| 25 | void __init r8a7740_init_irq(void) | |
| 26 | { | |
| 0b7d7820 BH |
27 | void __iomem *gic_dist_base = ioremap_nocache(0xc2800000, 0x1000); |
| 28 | void __iomem *gic_cpu_base = ioremap_nocache(0xc2000000, 0x1000); | |
| 29 | void __iomem *intc_prio_base = ioremap_nocache(0xe6900010, 0x10); | |
| 30 | void __iomem *intc_msk_base = ioremap_nocache(0xe6900040, 0x10); | |
| 31 | void __iomem *pfc_inta_ctrl = ioremap_nocache(0xe605807c, 0x4); | |
| 32 | ||
| 33 | /* initialize the Generic Interrupt Controller PL390 r0p0 */ | |
| 34 | gic_init(0, 29, gic_dist_base, gic_cpu_base); | |
| 35 | ||
| 36 | /* route signals to GIC */ | |
| 37 | iowrite32(0x0, pfc_inta_ctrl); | |
| 38 | ||
| 39 | /* | |
| 40 | * To mask the shared interrupt to SPI 149 we must ensure to set | |
| 41 | * PRIO *and* MASK. Else we run into IRQ floods when registering | |
| 42 | * the intc_irqpin devices | |
| 43 | */ | |
| 44 | iowrite32(0x0, intc_prio_base + 0x0); | |
| 45 | iowrite32(0x0, intc_prio_base + 0x4); | |
| 46 | iowrite32(0x0, intc_prio_base + 0x8); | |
| 47 | iowrite32(0x0, intc_prio_base + 0xc); | |
| 48 | iowrite8(0xff, intc_msk_base + 0x0); | |
| 49 | iowrite8(0xff, intc_msk_base + 0x4); | |
| 50 | iowrite8(0xff, intc_msk_base + 0x8); | |
| 51 | iowrite8(0xff, intc_msk_base + 0xc); | |
| 52 | ||
| 53 | iounmap(intc_prio_base); | |
| 54 | iounmap(intc_msk_base); | |
| 55 | iounmap(pfc_inta_ctrl); | |
| 6c01ba44 | 56 | } |