loic/ina260-sysfs-driver
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Loic Guegan 2023-07-12 17:55:13 +02:00
parent 71ffc9684c
commit 4db195b0d6
1 changed files with 6 additions and 13 deletions
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19
ina260.c
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@ -50,18 +50,15 @@ static int ina260_read_register(struct client_data* cdata, unsigned char reg, in
unsigned char bytes[2]; unsigned char bytes[2];
if(cdata->reg == reg){ if(cdata->reg == reg){
//printk("Cache\n"); //printk("Cache\n");
if(i2c_master_recv(cdata->client,bytes,2)<0){ if(i2c_master_recv(cdata->client,bytes,2)<0)
return 1; return 1;
}
} else { } else {
//printk("No cache\n"); //printk("No cache\n");
if(i2c_master_send(cdata->client,&reg,1)<0){ if(i2c_master_send(cdata->client,&reg,1)<0)
return 1; return 1;
}
cdata->reg = reg; cdata->reg = reg;
if(i2c_master_recv(cdata->client,bytes,2)<0){ if(i2c_master_recv(cdata->client,bytes,2)<0)
return 1; return 1;
}
} }
*value=(bytes[0]<<8) | bytes[1]; *value=(bytes[0]<<8) | bytes[1];
return 0; return 0;
@ -72,9 +69,8 @@ static int ina260_write_register(struct client_data* cdata, unsigned char reg, i
data[0]=reg; data[0]=reg;
data[1]=(value>>8) & 0xFF; // MSB data[1]=(value>>8) & 0xFF; // MSB
data[2]=value & 0xFF; // LSB data[2]=value & 0xFF; // LSB
if(i2c_master_send(cdata->client,data,3)<0){ if(i2c_master_send(cdata->client,data,3)<0)
return 1; return 1;
}
return 0; return 0;
} }
@ -395,12 +391,10 @@ static struct kobj_type ina260_ktype = {
static int ina260_probe_register(struct i2c_client *client, unsigned char reg, int value){ static int ina260_probe_register(struct i2c_client *client, unsigned char reg, int value){
unsigned char bytes[2]; unsigned char bytes[2];
if(i2c_master_send(client,&reg,1)<0){ if(i2c_master_send(client,&reg,1)<0)
return 1; return 1;
} if(i2c_master_recv(client,bytes,2)<0)
if(i2c_master_recv(client,bytes,2)<0){
return 1; return 1;
}
return ((bytes[0]<<8) | bytes[1])!=value; return ((bytes[0]<<8) | bytes[1])!=value;
} }
@ -428,7 +422,6 @@ static int ina260_probe_new(struct i2c_client *client){
kfree(p); kfree(p);
return 1; return 1;
} }
return 0; return 0;
} }