Hi, Yesterday, I have bought ASUS P4G800-V board for my home linux server. I installed linux distribution, then I wanted to see and log cpu temp. So, I installed lm_sensors to my box, but part of SMSC LPC47M192 is supported. And I began to read datasheet(http://www.smsc.com/main/datasheets/47m192.pdf ). It seems that I must access via SMBus to fetch temp and voltage. in datasheet (page 129) > The Hardware Monitoring Block is a standalone block in the 2. > It can be accessed using SMBus interface. Then, I browsed other chips codes and putted some printk debug and i2c_smbus_read_byte_data function as follows. The result is failure. > smsc47m1.o version 2.9.0 (20041228) compiled Apr 11 2005 02:02:47 > smsc47m1_find devid:0x60 > smsc47m1.o addr: 0x680 > i2c_check_functionality 0 > i2c_get_functionality(adapter):0x0 > i2c-core.o: I2C adapter 50000: I2C level transfers not supported > 0x3e rets 0xffffffff Anyone know how to access this chip via SMBus? Regards, wore -- Here's my loaded modules. $ /sbin/lsmod|grep i2c i2c-proc 7748 0 [smsc47m1] i2c-dev 4576 0 i2c-i801 5884 0 i2c-isa 1392 0 i2c-core 19588 0 [smsc47m1 i2c-proc i2c-dev i2c-i801 i2c-isa] -- This is my debug test. diff -aurN lm_sensors-2.9.0/kernel/chips/smsc47m1.c.orig lm_sensors-2.9.0/kernel/chips/smsc47m1.c --- lm_sensors-2.9.0/kernel/chips/smsc47m1.c.orig 2005-04-10 15:48:04.000000000 +0900 +++ lm_sensors-2.9.0/kernel/chips/smsc47m1.c 2005-04-11 02:02:39.000000000 +0900 @@ -33,7 +33,7 @@ MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); -static unsigned short normal_i2c[] = { SENSORS_I2C_END }; +static unsigned short normal_i2c[] = { 0x2c, 0x2d, SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { SENSORS_I2C_END }; static unsigned int normal_isa[] = { 0x0000, SENSORS_ISA_END }; static unsigned int normal_isa_range[] = { SENSORS_ISA_END }; @@ -214,6 +214,7 @@ superio_exit(); return -ENODEV; } + printk("smsc47m1_find devid:0x%x\n", val); superio_select(); val = (superio_inb(SMSC_BASE_REG) << 8) | @@ -245,6 +246,15 @@ return 0; } + if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { + printk("i2c_check_functionality 1\n"); + } else { + printk("i2c_check_functionality 0\n"); + } + + printk("i2c_get_functionality(adapter):0x%x\n", + i2c_get_functionality(adapter)); + if(force_addr) address = force_addr & ~(SMSC_EXTENT - 1); if (check_region(address, SMSC_EXTENT)) { @@ -344,6 +354,8 @@ /* configure pins for tach function */ smsc47m1_write_value(client, SMSC47M1_REG_TPIN1, 0x05); smsc47m1_write_value(client, SMSC47M1_REG_TPIN2, 0x05); + printk("0x3e (company id) rets 0x%x\n", + i2c_smbus_read_byte_data(client, 0x3e)); } static void smsc47m1_update_client(struct i2c_client *client) @@ -488,12 +500,14 @@ { int addr; - printk("smsc47m1.o version %s (%s)\n", LM_VERSION, LM_DATE); + printk("smsc47m1.o version %s (%s) compiled %s %s\n", + LM_VERSION, LM_DATE, __DATE__, __TIME__); if (smsc47m1_find(&addr)) { printk("smsc47m1.o: SMSC 47M1xx not detected, module not inserted.\n"); return -ENODEV; } + printk("smsc47m1.o addr: 0x%x\n", addr); normal_isa[0] = addr; return i2c_add_driver(&smsc47m1_driver);
