kernel/arch/sh/boards/mach-microdev/fdc37c93xapm.c

   1 /*
   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  * May be copied or modified under the terms of the GNU General Public
  12  * License.  See linux/COPYING for more information.
  13  */
  14 #include <linux/init.h>
  15 #include <linux/ioport.h>
  16 #include <linux/io.h>
  17 #include <linux/err.h>
  18 #include <mach/microdev.h>
  19
  20 #define SMSC_CONFIG_PORT_ADDR    (0x3F0)
  21 #define SMSC_INDEX_PORT_ADDR     SMSC_CONFIG_PORT_ADDR
  22 #define SMSC_DATA_PORT_ADDR      (SMSC_INDEX_PORT_ADDR + 1)
  23
  24 #define SMSC_ENTER_CONFIG_KEY    0x55
  25 #define SMSC_EXIT_CONFIG_KEY     0xaa
  26
  27 #define SMCS_LOGICAL_DEV_INDEX   0x07   /* Logical Device Number */
  28 #define SMSC_DEVICE_ID_INDEX     0x20   /* Device ID */
  29 #define SMSC_DEVICE_REV_INDEX    0x21   /* Device Revision */
  30 #define SMSC_ACTIVATE_INDEX      0x30   /* Activate */
  31 #define SMSC_PRIMARY_BASE_INDEX  0x60   /* Primary Base Address */
  32 #define SMSC_SECONDARY_BASE_INDEX 0x62  /* Secondary Base Address */
  33 #define SMSC_PRIMARY_INT_INDEX   0x70   /* Primary Interrupt Select */
  34 #define SMSC_SECONDARY_INT_INDEX 0x72   /* Secondary Interrupt Select */
  35 #define SMSC_HDCS0_INDEX         0xf0   /* HDCS0 Address Decoder */
  36 #define SMSC_HDCS1_INDEX         0xf1   /* HDCS1 Address Decoder */
  37
  38 #define SMSC_IDE1_DEVICE        1       /* IDE #1 logical device */
  39 #define SMSC_IDE2_DEVICE        2       /* IDE #2 logical device */
  40 #define SMSC_PARALLEL_DEVICE    3       /* Parallel Port logical device */
  41 #define SMSC_SERIAL1_DEVICE     4       /* Serial #1 logical device */
  42 #define SMSC_SERIAL2_DEVICE     5       /* Serial #2 logical device */
  43 #define SMSC_KEYBOARD_DEVICE    7       /* Keyboard logical device */
  44 #define SMSC_CONFIG_REGISTERS   8       /* Configuration Registers (Aux I/O) */
  45
  46 #define SMSC_READ_INDEXED(index) ({ \
  47         outb((index), SMSC_INDEX_PORT_ADDR); \
  48         inb(SMSC_DATA_PORT_ADDR); })
  49 #define SMSC_WRITE_INDEXED(val, index) ({ \
  50         outb((index), SMSC_INDEX_PORT_ADDR); \
  51         outb((val),   SMSC_DATA_PORT_ADDR); })
  52
  53 #define IDE1_PRIMARY_BASE       0x01f0  /* Task File Registe base for IDE #1 */
  54 #define IDE1_SECONDARY_BASE     0x03f6  /* Miscellaneous AT registers for IDE #1 */
  55 #define IDE2_PRIMARY_BASE       0x0170  /* Task File Registe base for IDE #2 */
  56 #define IDE2_SECONDARY_BASE     0x0376  /* Miscellaneous AT registers for IDE #2 */
  57
  58 #define SERIAL1_PRIMARY_BASE    0x03f8
  59 #define SERIAL2_PRIMARY_BASE    0x02f8
  60
  61 #define MSB(x)          ( (x) >> 8 )
  62 #define LSB(x)          ( (x) & 0xff )
  63
  64         /* General-Purpose base address on CPU-board FPGA */
  65 #define MICRODEV_FPGA_GP_BASE           0xa6100000ul
  66
  67 static int __init smsc_superio_setup(void)
  68 {
  69
  70         unsigned char devid, devrev;
  71
  72                 /* Initially the chip is in run state */
  73                 /* Put it into configuration state */
  74         outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
  75
  76                 /* Read device ID info */
  77         devid  = SMSC_READ_INDEXED(SMSC_DEVICE_ID_INDEX);
  78         devrev = SMSC_READ_INDEXED(SMSC_DEVICE_REV_INDEX);
  79
  80         if ((devid == 0x30) && (devrev == 0x01))
  81                 printk("SMSC FDC37C93xAPM SuperIO device detected\n");
  82         else
  83                 return -ENODEV;
  84
  85                 /* Select the keyboard device */
  86         SMSC_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX);
  87                 /* enable it */
  88         SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
  89                 /* enable the interrupts */
  90         SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_KEYBOARD, SMSC_PRIMARY_INT_INDEX);
  91         SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_MOUSE, SMSC_SECONDARY_INT_INDEX);
  92
  93                 /* Select the Serial #1 device */
  94         SMSC_WRITE_INDEXED(SMSC_SERIAL1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
  95                 /* enable it */
  96         SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
  97                 /* program with port addresses */
  98         SMSC_WRITE_INDEXED(MSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
  99         SMSC_WRITE_INDEXED(LSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
 100         SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX);
 101                 /* enable the interrupts */
 102         SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL1, SMSC_PRIMARY_INT_INDEX);
 103
 104                 /* Select the Serial #2 device */
 105         SMSC_WRITE_INDEXED(SMSC_SERIAL2_DEVICE, SMCS_LOGICAL_DEV_INDEX);
 106                 /* enable it */
 107         SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
 108                 /* program with port addresses */
 109         SMSC_WRITE_INDEXED(MSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
 110         SMSC_WRITE_INDEXED(LSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
 111         SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX);
 112                 /* enable the interrupts */
 113         SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL2, SMSC_PRIMARY_INT_INDEX);
 114
 115                 /* Select the IDE#1 device */
 116         SMSC_WRITE_INDEXED(SMSC_IDE1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
 117                 /* enable it */
 118         SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
 119                 /* program with port addresses */
 120         SMSC_WRITE_INDEXED(MSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
 121         SMSC_WRITE_INDEXED(LSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
 122         SMSC_WRITE_INDEXED(MSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0);
 123         SMSC_WRITE_INDEXED(LSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1);
 124         SMSC_WRITE_INDEXED(0x0c, SMSC_HDCS0_INDEX);
 125         SMSC_WRITE_INDEXED(0x00, SMSC_HDCS1_INDEX);
 126                 /* select the interrupt */
 127         SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE1, SMSC_PRIMARY_INT_INDEX);
 128
 129                 /* Select the IDE#2 device */
 130         SMSC_WRITE_INDEXED(SMSC_IDE2_DEVICE, SMCS_LOGICAL_DEV_INDEX);
 131                 /* enable it */
 132         SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
 133                 /* program with port addresses */
 134         SMSC_WRITE_INDEXED(MSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
 135         SMSC_WRITE_INDEXED(LSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
 136         SMSC_WRITE_INDEXED(MSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0);
 137         SMSC_WRITE_INDEXED(LSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1);
 138                 /* select the interrupt */
 139         SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE2, SMSC_PRIMARY_INT_INDEX);
 140
 141                 /* Select the configuration registers */
 142         SMSC_WRITE_INDEXED(SMSC_CONFIG_REGISTERS, SMCS_LOGICAL_DEV_INDEX);
 143                 /* enable the appropriate GPIO pins for IDE functionality:
 144                  * bit[0]   In/Out              1==input;  0==output
 145                  * bit[1]   Polarity            1==invert; 0==no invert
 146                  * bit[2]   Int Enb #1          1==Enable Combined IRQ #1; 0==disable
 147                  * bit[3:4] Function Select     00==original; 01==Alternate Function #1
 148                  */
 149         SMSC_WRITE_INDEXED(0x00, 0xc2); /* GP42 = nIDE1_OE */
 150         SMSC_WRITE_INDEXED(0x01, 0xc5); /* GP45 = IDE1_IRQ */
 151         SMSC_WRITE_INDEXED(0x00, 0xc6); /* GP46 = nIOROP */
 152         SMSC_WRITE_INDEXED(0x00, 0xc7); /* GP47 = nIOWOP */
 153         SMSC_WRITE_INDEXED(0x08, 0xe8); /* GP20 = nIDE2_OE */
 154
 155                 /* Exit the configuration state */
 156         outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
 157
 158         return 0;
 159 }
 160 device_initcall(smsc_superio_setup);