Hi, I'm not member of this list, so would you subscribe me to this list? After I have wrote previous mail, I got infomation from the archive, then I find my chip via SMBus. http://archives.andrew.net.au/lm-sensors/msg30861.html # check i2cdetect According to PDF page 130, > The default power on SMBus address is 010110x binary, > where x reflects the state defined by the A0 pin. 0x2d is 0101101, so it seems it is the chip. > $ sudo /usr/sbin/i2cdetect 1 > WARNING! This program can confuse your I2C bus, cause data loss and worse! > I will probe file /dev/i2c-1. > I will probe address range 0x03-0x77. > Continue? [Y/n] > 0 1 2 3 4 5 6 7 8 9 a b c d e f > 00: XX XX XX XX XX 08 XX XX XX 0c XX XX XX > 10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX > 20: XX XX XX XX XX XX XX XX XX XX XX XX XX 2d XX XX > 30: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX > 40: XX XX XX XX 44 XX XX XX XX XX XX XX XX XX XX XX > 50: 50 XX 52 XX XX XX XX XX XX XX XX XX XX XX XX XX > 60: XX XX XX XX XX XX XX XX XX 69 XX XX XX XX XX XX > 70: XX XX XX XX XX XX XX XX # check i2cdump According to PDF page 184, reg 0x3e is Company ID and default value is 0x55, reg 0x3f is Stepping and default value is 0x20, dump seems correct. > $ sudo /usr/sbin/i2cdump 1 0x2d > No size specified (using byte-data access) > WARNING! This program can confuse your I2C bus, cause data loss and worse! > I will probe file /dev/i2c-1, address 0x2d, mode byte > Continue? [Y/n] > 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef > 00: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > 10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX 00 00 XXXXXXXXXXXXXX.. > 20: bf 7f c4 c5 c4 c4 1f 20 XX XX XX a7 99 72 ef af ??????? XXX??r?? > 30: 76 6f 57 57 bf 77 cf f5 a4 bb 7d XX XX XX 55 20 voWW?w????}XXXU > 40: 09 7f 0f XX XX XX XX 0d XX 80 00 72 00 00 XX 00 ???XXXX?X?.r..X. > 50: ce bd 1f XX 1a ff fe c6 ed 3a XX XX XX XX XX XX ???X?.???:XXXXXX > 60: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > 70: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > 80: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > 90: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > a0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > b0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > c0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > d0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > e0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX > f0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX Then, I began to SMBus only driver on 2.4.29 kernel. Currently, no function is implemented. Just check chip corp and exit. I will complete it by the weekend. here's syslog > smsc47m192.o version 2.9.0 (20041228) Apr 12 2005 10:27:13 > 0x3e rets 0x55 Regards, wore -- /* * smsc47m192.c test by wore <info at wore.ma.cx> * based on asb100.c */ #include <linux/module.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/i2c-proc.h> #include <linux/init.h> #include "version.h" #include "sensors_vid.h" #ifndef I2C_DRIVERID_SMSC47M192 #define I2C_DRIVERID_SMSC47M192 1092 #endif /* I2C addresses to scan */ static unsigned short normal_i2c[] = { 0x2d, SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { SENSORS_I2C_END }; /* ISA addresses to scan (none) */ static unsigned int normal_isa[] = { SENSORS_ISA_END }; static unsigned int normal_isa_range[] = { SENSORS_ISA_END }; /* Insmod parameters */ SENSORS_INSMOD_1(smsc47m192); SENSORS_MODULE_PARM(force_subclients, "List of subclient addresses: " \ "{bus, clientaddr, subclientaddr1, subclientaddr2}"); /* For each registered client, we need to keep some data in memory. That data is pointed to by client->data. The structure itself is dynamically allocated, at the same time the client itself is allocated. */ struct smsc47m192_data { struct i2c_client client; struct semaphore lock; int sysctl_id; enum chips type; struct semaphore update_lock; unsigned long last_updated; /* In jiffies */ char valid; /* !=0 if following fields are valid */ }; static int smsc47m192_attach_adapter(struct i2c_adapter *adapter); static int smsc47m192_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int smsc47m192_detach_client(struct i2c_client *client); static struct i2c_driver smsc47m192_driver = { .name = "smsc47m192", .id = I2C_DRIVERID_SMSC47M192, .flags = I2C_DF_NOTIFY, .attach_adapter = smsc47m192_attach_adapter, .detach_client = smsc47m192_detach_client, }; /* -- SENSORS SYSCTL END -- */ static int smsc47m192_attach_adapter(struct i2c_adapter *adapter) { return i2c_detect(adapter, &addr_data, smsc47m192_detect); } static int smsc47m192_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int err; struct i2c_client *new_client; struct smsc47m192_data *data; /* asb100 is SMBus only */ if (i2c_is_isa_adapter(adapter)) { pr_debug("smsc47m192.o: detect failed, " "cannot attach to legacy adapter!\n"); err = -ENODEV; goto ERROR0; } if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { pr_debug("smsc47m192.o: detect failed, " "smbus byte data not supported!\n"); err = -ENODEV; goto ERROR0; } /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. But it allows us to access asb100_{read,write}_value. */ if (!(data = kmalloc(sizeof(struct smsc47m192_data), GFP_KERNEL))) { pr_debug("asb100.o: detect failed, kmalloc failed!\n"); err = -ENOMEM; goto ERROR0; } new_client = &data->client; new_client->addr = address; init_MUTEX(&data->lock); new_client->data = data; new_client->adapter = adapter; new_client->driver = &smsc47m192_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ printk("0x3e rets 0x%x\n", i2c_smbus_read_byte_data(new_client, 0x3e)); strcpy(new_client->name, "smsc47m192 chip"); data->type = kind; data->valid = 0; init_MUTEX(&data->update_lock); /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(new_client))) goto ERROR1; /* Initialize the chip */ /* asb100_init_client(new_client); */ return 0; ERROR3: ERROR2: i2c_detach_client(new_client); ERROR1: kfree(data); ERROR0: return err; } static int smsc47m192_detach_client(struct i2c_client *client) { int err; struct smsc47m192_data *data = client->data; /* remove sysctl table (primary client only) */ if ((data)) i2c_deregister_entry(data->sysctl_id); if ((err = i2c_detach_client(client))) { printk (KERN_ERR "smsc47m192.o: Client deregistration failed; " "client not detached.\n"); return err; } if (data) { /* primary client */ kfree(data); } else { /* subclients */ kfree(client); } return 0; } static void smsc47m192_init_client(struct i2c_client *client) { struct smsc47m192_data *data = client->data; int vid = 0; } static void smsc47m192_update_client(struct i2c_client *client) { struct smsc47m192_data *data = client->data; int i; down(&data->update_lock); up(&data->update_lock); } static int __init smsc47m192_init(void) { printk(KERN_INFO "smsc47m192.o version %s (%s) %s %s\n", LM_VERSION, LM_DATE, __DATE__, __TIME__); return i2c_add_driver(&smsc47m192_driver); } static void __exit smsc47m192_exit(void) { i2c_del_driver(&smsc47m192_driver); } MODULE_AUTHOR("wore <info at wore.ma.cx>"); MODULE_DESCRIPTION("smsc47m192 driver"); MODULE_LICENSE("GPL"); module_init(smsc47m192_init); module_exit(smsc47m192_exit);
