1/* 2 * Renesas Solutions Highlander R7785RP Support. 3 * 4 * Copyright (C) 2002 Atom Create Engineering Co., Ltd. 5 * Copyright (C) 2006 - 2008 Paul Mundt 6 * Copyright (C) 2007 Magnus Damm 7 * 8 * This file is subject to the terms and conditions of the GNU General Public 9 * License. See the file "COPYING" in the main directory of this archive 10 * for more details. 11 */ 12#include <linux/init.h> 13#include <linux/irq.h> 14#include <linux/io.h> 15#include <mach/highlander.h> 16 17enum { 18 UNUSED = 0, 19 20 /* FPGA specific interrupt sources */ 21 CF, /* Compact Flash */ 22 SMBUS, /* SMBUS */ 23 TP, /* Touch panel */ 24 RTC, /* RTC Alarm */ 25 TH_ALERT, /* Temperature sensor */ 26 AX88796, /* Ethernet controller */ 27 28 /* external bus connector */ 29 EXT0, EXT1, EXT2, EXT3, EXT4, EXT5, EXT6, EXT7, 30}; 31 32static struct intc_vect vectors[] __initdata = { 33 INTC_IRQ(CF, IRQ_CF), 34 INTC_IRQ(SMBUS, IRQ_SMBUS), 35 INTC_IRQ(TP, IRQ_TP), 36 INTC_IRQ(RTC, IRQ_RTC), 37 INTC_IRQ(TH_ALERT, IRQ_TH_ALERT), 38 39 INTC_IRQ(EXT0, IRQ_EXT0), INTC_IRQ(EXT1, IRQ_EXT1), 40 INTC_IRQ(EXT2, IRQ_EXT2), INTC_IRQ(EXT3, IRQ_EXT3), 41 42 INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5), 43 INTC_IRQ(EXT6, IRQ_EXT6), INTC_IRQ(EXT7, IRQ_EXT7), 44 45 INTC_IRQ(AX88796, IRQ_AX88796), 46}; 47 48static struct intc_mask_reg mask_registers[] __initdata = { 49 { 0xa4000010, 0, 16, /* IRLMCR1 */ 50 { 0, 0, 0, 0, CF, AX88796, SMBUS, TP, 51 RTC, 0, TH_ALERT, 0, 0, 0, 0, 0 } }, 52 { 0xa4000012, 0, 16, /* IRLMCR2 */ 53 { 0, 0, 0, 0, 0, 0, 0, 0, 54 EXT7, EXT6, EXT5, EXT4, EXT3, EXT2, EXT1, EXT0 } }, 55}; 56 57static unsigned char irl2irq[HL_NR_IRL] __initdata = { 58 0, IRQ_CF, IRQ_EXT4, IRQ_EXT5, 59 IRQ_EXT6, IRQ_EXT7, IRQ_SMBUS, IRQ_TP, 60 IRQ_RTC, IRQ_TH_ALERT, IRQ_AX88796, IRQ_EXT0, 61 IRQ_EXT1, IRQ_EXT2, IRQ_EXT3, 62}; 63 64static DECLARE_INTC_DESC(intc_desc, "r7785rp", vectors, 65 NULL, mask_registers, NULL, NULL); 66 67unsigned char * __init highlander_plat_irq_setup(void) 68{ 69 if ((__raw_readw(0xa4000158) & 0xf000) != 0x1000) 70 return NULL; 71 72 printk(KERN_INFO "Using r7785rp interrupt controller.\n"); 73 74 __raw_writew(0x0000, PA_IRLSSR1); /* FPGA IRLSSR1(CF_CD clear) */ 75 76 /* Setup the FPGA IRL */ 77 __raw_writew(0x0000, PA_IRLPRA); /* FPGA IRLA */ 78 __raw_writew(0xe598, PA_IRLPRB); /* FPGA IRLB */ 79 __raw_writew(0x7060, PA_IRLPRC); /* FPGA IRLC */ 80 __raw_writew(0x0000, PA_IRLPRD); /* FPGA IRLD */ 81 __raw_writew(0x4321, PA_IRLPRE); /* FPGA IRLE */ 82 __raw_writew(0xdcba, PA_IRLPRF); /* FPGA IRLF */ 83 84 register_intc_controller(&intc_desc); 85 return irl2irq; 86} 87