/*
*
* Setup for the SMSC FDC37C93xAPM
*
* Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
* Copyright (C) 2003, 2004 SuperH, Inc.
* Copyright (C) 2004, 2005 Paul Mundt
*
* SuperH SH4-202 MicroDev board support.
*
* May be copied or modified under the terms of the GNU General Public
* License. See linux/COPYING for more information.
*/
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/err.h>
#include <mach/microdev.h>
#define SMSC_CONFIG_PORT_ADDR (0x3F0)
#define SMSC_INDEX_PORT_ADDR SMSC_CONFIG_PORT_ADDR
#define SMSC_DATA_PORT_ADDR (SMSC_INDEX_PORT_ADDR + 1)
#define SMSC_ENTER_CONFIG_KEY 0x55
#define SMSC_EXIT_CONFIG_KEY 0xaa
#define SMCS_LOGICAL_DEV_INDEX 0x07 /* Logical Device Number */
#define SMSC_DEVICE_ID_INDEX 0x20 /* Device ID */
#define SMSC_DEVICE_REV_INDEX 0x21 /* Device Revision */
#define SMSC_ACTIVATE_INDEX 0x30 /* Activate */
#define SMSC_PRIMARY_BASE_INDEX 0x60 /* Primary Base Address */
#define SMSC_SECONDARY_BASE_INDEX 0x62 /* Secondary Base Address */
#define SMSC_PRIMARY_INT_INDEX 0x70 /* Primary Interrupt Select */
#define SMSC_SECONDARY_INT_INDEX 0x72 /* Secondary Interrupt Select */
#define SMSC_HDCS0_INDEX 0xf0 /* HDCS0 Address Decoder */
#define SMSC_HDCS1_INDEX 0xf1 /* HDCS1 Address Decoder */
#define SMSC_IDE1_DEVICE 1 /* IDE #1 logical device */
#define SMSC_IDE2_DEVICE 2 /* IDE #2 logical device */
#define SMSC_PARALLEL_DEVICE 3 /* Parallel Port logical device */
#define SMSC_SERIAL1_DEVICE 4 /* Serial #1 logical device */
#define SMSC_SERIAL2_DEVICE 5 /* Serial #2 logical device */
#define SMSC_KEYBOARD_DEVICE 7 /* Keyboard logical device */
#define SMSC_CONFIG_REGISTERS 8 /* Configuration Registers (Aux I/O) */
#define SMSC_READ_INDEXED(index) ({ \
outb((index), SMSC_INDEX_PORT_ADDR); \
inb(SMSC_DATA_PORT_ADDR); })
#define SMSC_WRITE_INDEXED(val, index) ({ \
outb((index), SMSC_INDEX_PORT_ADDR); \
outb((val), SMSC_DATA_PORT_ADDR); })
#define IDE1_PRIMARY_BASE 0x01f0 /* Task File Registe base for IDE #1 */
#define IDE1_SECONDARY_BASE 0x03f6 /* Miscellaneous AT registers for IDE #1 */
#define IDE2_PRIMARY_BASE 0x0170 /* Task File Registe base for IDE #2 */
#define IDE2_SECONDARY_BASE 0x0376 /* Miscellaneous AT registers for IDE #2 */
#define SERIAL1_PRIMARY_BASE 0x03f8
#define SERIAL2_PRIMARY_BASE 0x02f8
#define MSB(x) ( (x) >> 8 )
#define LSB(x) ( (x) & 0xff )
/* General-Purpose base address on CPU-board FPGA */
#define MICRODEV_FPGA_GP_BASE 0xa6100000ul
static int __init smsc_superio_setup(void)
{
unsigned char devid, devrev;
/* Initially the chip is in run state */
/* Put it into configuration state */
outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
/* Read device ID info */
devid = SMSC_READ_INDEXED(SMSC_DEVICE_ID_INDEX);
devrev = SMSC_READ_INDEXED(SMSC_DEVICE_REV_INDEX);
if ((devid == 0x30) && (devrev == 0x01))
printk("SMSC FDC37C93xAPM SuperIO device detected\n");
else
return -ENODEV;
/* Select the keyboard device */
SMSC_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX);
/* enable it */
SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
/* enable the interrupts */
SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_KEYBOARD, SMSC_PRIMARY_INT_INDEX);
SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_MOUSE, SMSC_SECONDARY_INT_INDEX);
/* Select the Serial #1 device */
SMSC_WRITE_INDEXED(SMSC_SERIAL1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
/* enable it */
SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
/* program with port addresses */
SMSC_WRITE_INDEXED(MSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
SMSC_WRITE_INDEXED(LSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX);
/* enable the interrupts */
SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL1, SMSC_PRIMARY_INT_INDEX);
/* Select the Serial #2 device */
SMSC_WRITE_INDEXED(SMSC_SERIAL2_DEVICE, SMCS_LOGICAL_DEV_INDEX);
/* enable it */
SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
/* program with port addresses */
SMSC_WRITE_INDEXED(MSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
SMSC_WRITE_INDEXED(LSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX);
/* enable the interrupts */
SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL2, SMSC_PRIMARY_INT_INDEX);
/* Select the IDE#1 device */
SMSC_WRITE_INDEXED(SMSC_IDE1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
/* enable it */
SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
/* program with port addresses */
SMSC_WRITE_INDEXED(MSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
SMSC_WRITE_INDEXED(LSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
SMSC_WRITE_INDEXED(MSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0);
SMSC_WRITE_INDEXED(LSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1);
SMSC_WRITE_INDEXED(0x0c, SMSC_HDCS0_INDEX);
SMSC_WRITE_INDEXED(0x00, SMSC_HDCS1_INDEX);
/* select the interrupt */
SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE1, SMSC_PRIMARY_INT_INDEX);
/* Select the IDE#2 device */
SMSC_WRITE_INDEXED(SMSC_IDE2_DEVICE, SMCS_LOGICAL_DEV_INDEX);
/* enable it */
SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
/* program with port addresses */
SMSC_WRITE_INDEXED(MSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
SMSC_WRITE_INDEXED(LSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
SMSC_WRITE_INDEXED(MSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0);
SMSC_WRITE_INDEXED(LSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1);
/* select the interrupt */
SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE2, SMSC_PRIMARY_INT_INDEX);
/* Select the configuration registers */
SMSC_WRITE_INDEXED(SMSC_CONFIG_REGISTERS, SMCS_LOGICAL_DEV_INDEX);
/* enable the appropriate GPIO pins for IDE functionality:
* bit[0] In/Out 1==input; 0==output
* bit[1] Polarity 1==invert; 0==no invert
* bit[2] Int Enb #1 1==Enable Combined IRQ #1; 0==disable
* bit[3:4] Function Select 00==original; 01==Alternate Function #1
*/
SMSC_WRITE_INDEXED(0x00, 0xc2); /* GP42 = nIDE1_OE */
SMSC_WRITE_INDEXED(0x01, 0xc5); /* GP45 = IDE1_IRQ */
SMSC_WRITE_INDEXED(0x00, 0xc6); /* GP46 = nIOROP */
SMSC_WRITE_INDEXED(0x00, 0xc7); /* GP47 = nIOWOP */
SMSC_WRITE_INDEXED(0x08, 0xe8); /* GP20 = nIDE2_OE */
/* Exit the configuration state */
outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
return 0;
}
device_initcall(smsc_superio_setup);