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#include "cs5535_smbus.h"
#define SMBUS_IO_BASE 0x6000
/* initialization for SMBus Controller */
static int cs5535_enable_smbus(void)
{
unsigned char val;
/* reset SMBUS controller */
outb(0, SMBUS_IO_BASE + SMB_CTRL2);
/* Set SCL freq and enable SMB controller */
val = inb(SMBUS_IO_BASE + SMB_CTRL2);
val |= ((0x20 << 1) | SMB_CTRL2_ENABLE);
outb(val, SMBUS_IO_BASE + SMB_CTRL2);
/* Setup SMBus host controller address to 0xEF */
val = inb(SMBUS_IO_BASE + SMB_ADD);
val |= (0xEF | SMB_ADD_SAEN);
outb(val, SMBUS_IO_BASE + SMB_ADD);
}
static int smbus_read_byte(unsigned device, unsigned address)
{
return do_smbus_read_byte(SMBUS_IO_BASE, device, address-1);
}
#if 0
static int smbus_recv_byte(unsigned device)
{
return do_smbus_recv_byte(SMBUS_IO_BASE, device);
}
static int smbus_send_byte(unsigned device, unsigned char val)
{
return do_smbus_send_byte(SMBUS_IO_BASE, device, val);
}
static int smbus_write_byte(unsigned device, unsigned address, unsigned char val)
{
return do_smbus_write_byte(SMBUS_IO_BASE, device, address, val);
}
#endif
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