1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Renesas Solutions Highlander R7785RP Support. 4 * 5 * Copyright (C) 2002 Atom Create Engineering Co., Ltd. 6 * Copyright (C) 2006 - 2008 Paul Mundt 7 * Copyright (C) 2007 Magnus Damm 8 */ 9 #include <linux/init.h> 10 #include <linux/irq.h> 11 #include <linux/io.h> 12 #include <mach/highlander.h> 13 14 enum { 15 UNUSED = 0, 16 17 /* FPGA specific interrupt sources */ 18 CF, /* Compact Flash */ 19 SMBUS, /* SMBUS */ 20 TP, /* Touch panel */ 21 RTC, /* RTC Alarm */ 22 TH_ALERT, /* Temperature sensor */ 23 AX88796, /* Ethernet controller */ 24 25 /* external bus connector */ 26 EXT0, EXT1, EXT2, EXT3, EXT4, EXT5, EXT6, EXT7, 27 }; 28 29 static struct intc_vect vectors[] __initdata = { 30 INTC_IRQ(CF, IRQ_CF), 31 INTC_IRQ(SMBUS, IRQ_SMBUS), 32 INTC_IRQ(TP, IRQ_TP), 33 INTC_IRQ(RTC, IRQ_RTC), 34 INTC_IRQ(TH_ALERT, IRQ_TH_ALERT), 35 36 INTC_IRQ(EXT0, IRQ_EXT0), INTC_IRQ(EXT1, IRQ_EXT1), 37 INTC_IRQ(EXT2, IRQ_EXT2), INTC_IRQ(EXT3, IRQ_EXT3), 38 39 INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5), 40 INTC_IRQ(EXT6, IRQ_EXT6), INTC_IRQ(EXT7, IRQ_EXT7), 41 42 INTC_IRQ(AX88796, IRQ_AX88796), 43 }; 44 45 static struct intc_mask_reg mask_registers[] __initdata = { 46 { 0xa4000010, 0, 16, /* IRLMCR1 */ 47 { 0, 0, 0, 0, CF, AX88796, SMBUS, TP, 48 RTC, 0, TH_ALERT, 0, 0, 0, 0, 0 } }, 49 { 0xa4000012, 0, 16, /* IRLMCR2 */ 50 { 0, 0, 0, 0, 0, 0, 0, 0, 51 EXT7, EXT6, EXT5, EXT4, EXT3, EXT2, EXT1, EXT0 } }, 52 }; 53 54 static unsigned char irl2irq[HL_NR_IRL] __initdata = { 55 0, IRQ_CF, IRQ_EXT4, IRQ_EXT5, 56 IRQ_EXT6, IRQ_EXT7, IRQ_SMBUS, IRQ_TP, 57 IRQ_RTC, IRQ_TH_ALERT, IRQ_AX88796, IRQ_EXT0, 58 IRQ_EXT1, IRQ_EXT2, IRQ_EXT3, 59 }; 60 61 static DECLARE_INTC_DESC(intc_desc, "r7785rp", vectors, 62 NULL, mask_registers, NULL, NULL); 63 64 unsigned char * __init highlander_plat_irq_setup(void) 65 { 66 if ((__raw_readw(0xa4000158) & 0xf000) != 0x1000) 67 return NULL; 68 69 printk(KERN_INFO "Using r7785rp interrupt controller.\n"); 70 71 __raw_writew(0x0000, PA_IRLSSR1); /* FPGA IRLSSR1(CF_CD clear) */ 72 73 /* Setup the FPGA IRL */ 74 __raw_writew(0x0000, PA_IRLPRA); /* FPGA IRLA */ 75 __raw_writew(0xe598, PA_IRLPRB); /* FPGA IRLB */ 76 __raw_writew(0x7060, PA_IRLPRC); /* FPGA IRLC */ 77 __raw_writew(0x0000, PA_IRLPRD); /* FPGA IRLD */ 78 __raw_writew(0x4321, PA_IRLPRE); /* FPGA IRLE */ 79 __raw_writew(0xdcba, PA_IRLPRF); /* FPGA IRLF */ 80 81 register_intc_controller(&intc_desc); 82 return irl2irq; 83 } 84