1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Setup for the SMSC FDC37C93xAPM 4 * 5 * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com) 6 * Copyright (C) 2003, 2004 SuperH, Inc. 7 * Copyright (C) 2004, 2005 Paul Mundt 8 * 9 * SuperH SH4-202 MicroDev board support. 10 */ 11 #include <linux/init.h> 12 #include <linux/ioport.h> 13 #include <linux/io.h> 14 #include <linux/err.h> 15 #include <mach/microdev.h> 16 17 #define SMSC_CONFIG_PORT_ADDR (0x3F0) 18 #define SMSC_INDEX_PORT_ADDR SMSC_CONFIG_PORT_ADDR 19 #define SMSC_DATA_PORT_ADDR (SMSC_INDEX_PORT_ADDR + 1) 20 21 #define SMSC_ENTER_CONFIG_KEY 0x55 22 #define SMSC_EXIT_CONFIG_KEY 0xaa 23 24 #define SMCS_LOGICAL_DEV_INDEX 0x07 /* Logical Device Number */ 25 #define SMSC_DEVICE_ID_INDEX 0x20 /* Device ID */ 26 #define SMSC_DEVICE_REV_INDEX 0x21 /* Device Revision */ 27 #define SMSC_ACTIVATE_INDEX 0x30 /* Activate */ 28 #define SMSC_PRIMARY_BASE_INDEX 0x60 /* Primary Base Address */ 29 #define SMSC_SECONDARY_BASE_INDEX 0x62 /* Secondary Base Address */ 30 #define SMSC_PRIMARY_INT_INDEX 0x70 /* Primary Interrupt Select */ 31 #define SMSC_SECONDARY_INT_INDEX 0x72 /* Secondary Interrupt Select */ 32 #define SMSC_HDCS0_INDEX 0xf0 /* HDCS0 Address Decoder */ 33 #define SMSC_HDCS1_INDEX 0xf1 /* HDCS1 Address Decoder */ 34 35 #define SMSC_IDE1_DEVICE 1 /* IDE #1 logical device */ 36 #define SMSC_IDE2_DEVICE 2 /* IDE #2 logical device */ 37 #define SMSC_PARALLEL_DEVICE 3 /* Parallel Port logical device */ 38 #define SMSC_SERIAL1_DEVICE 4 /* Serial #1 logical device */ 39 #define SMSC_SERIAL2_DEVICE 5 /* Serial #2 logical device */ 40 #define SMSC_KEYBOARD_DEVICE 7 /* Keyboard logical device */ 41 #define SMSC_CONFIG_REGISTERS 8 /* Configuration Registers (Aux I/O) */ 42 43 #define SMSC_READ_INDEXED(index) ({ \ 44 outb((index), SMSC_INDEX_PORT_ADDR); \ 45 inb(SMSC_DATA_PORT_ADDR); }) 46 #define SMSC_WRITE_INDEXED(val, index) ({ \ 47 outb((index), SMSC_INDEX_PORT_ADDR); \ 48 outb((val), SMSC_DATA_PORT_ADDR); }) 49 50 #define IDE1_PRIMARY_BASE 0x01f0 /* Task File Registe base for IDE #1 */ 51 #define IDE1_SECONDARY_BASE 0x03f6 /* Miscellaneous AT registers for IDE #1 */ 52 #define IDE2_PRIMARY_BASE 0x0170 /* Task File Registe base for IDE #2 */ 53 #define IDE2_SECONDARY_BASE 0x0376 /* Miscellaneous AT registers for IDE #2 */ 54 55 #define SERIAL1_PRIMARY_BASE 0x03f8 56 #define SERIAL2_PRIMARY_BASE 0x02f8 57 58 #define MSB(x) ( (x) >> 8 ) 59 #define LSB(x) ( (x) & 0xff ) 60 61 /* General-Purpose base address on CPU-board FPGA */ 62 #define MICRODEV_FPGA_GP_BASE 0xa6100000ul 63 64 static int __init smsc_superio_setup(void) 65 { 66 67 unsigned char devid, devrev; 68 69 /* Initially the chip is in run state */ 70 /* Put it into configuration state */ 71 outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR); 72 73 /* Read device ID info */ 74 devid = SMSC_READ_INDEXED(SMSC_DEVICE_ID_INDEX); 75 devrev = SMSC_READ_INDEXED(SMSC_DEVICE_REV_INDEX); 76 77 if ((devid == 0x30) && (devrev == 0x01)) 78 printk("SMSC FDC37C93xAPM SuperIO device detected\n"); 79 else 80 return -ENODEV; 81 82 /* Select the keyboard device */ 83 SMSC_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX); 84 /* enable it */ 85 SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX); 86 /* enable the interrupts */ 87 SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_KEYBOARD, SMSC_PRIMARY_INT_INDEX); 88 SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_MOUSE, SMSC_SECONDARY_INT_INDEX); 89 90 /* Select the Serial #1 device */ 91 SMSC_WRITE_INDEXED(SMSC_SERIAL1_DEVICE, SMCS_LOGICAL_DEV_INDEX); 92 /* enable it */ 93 SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX); 94 /* program with port addresses */ 95 SMSC_WRITE_INDEXED(MSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0); 96 SMSC_WRITE_INDEXED(LSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1); 97 SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX); 98 /* enable the interrupts */ 99 SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL1, SMSC_PRIMARY_INT_INDEX); 100 101 /* Select the Serial #2 device */ 102 SMSC_WRITE_INDEXED(SMSC_SERIAL2_DEVICE, SMCS_LOGICAL_DEV_INDEX); 103 /* enable it */ 104 SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX); 105 /* program with port addresses */ 106 SMSC_WRITE_INDEXED(MSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0); 107 SMSC_WRITE_INDEXED(LSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1); 108 SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX); 109 /* enable the interrupts */ 110 SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL2, SMSC_PRIMARY_INT_INDEX); 111 112 /* Select the IDE#1 device */ 113 SMSC_WRITE_INDEXED(SMSC_IDE1_DEVICE, SMCS_LOGICAL_DEV_INDEX); 114 /* enable it */ 115 SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX); 116 /* program with port addresses */ 117 SMSC_WRITE_INDEXED(MSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0); 118 SMSC_WRITE_INDEXED(LSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1); 119 SMSC_WRITE_INDEXED(MSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0); 120 SMSC_WRITE_INDEXED(LSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1); 121 SMSC_WRITE_INDEXED(0x0c, SMSC_HDCS0_INDEX); 122 SMSC_WRITE_INDEXED(0x00, SMSC_HDCS1_INDEX); 123 /* select the interrupt */ 124 SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE1, SMSC_PRIMARY_INT_INDEX); 125 126 /* Select the IDE#2 device */ 127 SMSC_WRITE_INDEXED(SMSC_IDE2_DEVICE, SMCS_LOGICAL_DEV_INDEX); 128 /* enable it */ 129 SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX); 130 /* program with port addresses */ 131 SMSC_WRITE_INDEXED(MSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0); 132 SMSC_WRITE_INDEXED(LSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1); 133 SMSC_WRITE_INDEXED(MSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0); 134 SMSC_WRITE_INDEXED(LSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1); 135 /* select the interrupt */ 136 SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE2, SMSC_PRIMARY_INT_INDEX); 137 138 /* Select the configuration registers */ 139 SMSC_WRITE_INDEXED(SMSC_CONFIG_REGISTERS, SMCS_LOGICAL_DEV_INDEX); 140 /* enable the appropriate GPIO pins for IDE functionality: 141 * bit[0] In/Out 1==input; 0==output 142 * bit[1] Polarity 1==invert; 0==no invert 143 * bit[2] Int Enb #1 1==Enable Combined IRQ #1; 0==disable 144 * bit[3:4] Function Select 00==original; 01==Alternate Function #1 145 */ 146 SMSC_WRITE_INDEXED(0x00, 0xc2); /* GP42 = nIDE1_OE */ 147 SMSC_WRITE_INDEXED(0x01, 0xc5); /* GP45 = IDE1_IRQ */ 148 SMSC_WRITE_INDEXED(0x00, 0xc6); /* GP46 = nIOROP */ 149 SMSC_WRITE_INDEXED(0x00, 0xc7); /* GP47 = nIOWOP */ 150 SMSC_WRITE_INDEXED(0x08, 0xe8); /* GP20 = nIDE2_OE */ 151 152 /* Exit the configuration state */ 153 outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR); 154 155 return 0; 156 } 157 device_initcall(smsc_superio_setup); 158