Added fan controls

icx3.h

@@ -1,18 +1,21 @@
-#pragma once
-
 #define ICX3_I2C_ADDR 0x2D
 
 #define ICX3_REG_FANCONTROL 80
 #define ICX3_REG_TEMPSENSOR 102
 #define ICX3_REG_READINFORMATION 177
+#define ICX3_REG_ENABLEWRITE 178
 
 #define ICX3_FANCONTROL_SIZE 0x09
 #define ICX3_TEMPSENSOR_SIZE 0x13
 #define ICX3_READINFORMATION_SIZE 0x06
+#define ICX3_ENABLEWRITE_SIZE 0x05
 
 #define ICX3_MAX_FANS 4
 #define ICX3_NUM_TEMP_SENSORS 9
 
+#define ICX3_WRITE_ENABLED 0xFC
+#define ICX3_WRITE_DISABLED 0xFE
+
 struct icx3_fan_control {
 	unsigned char length;
 	unsigned char fanmode;
@@ -68,10 +71,22 @@ enum icx3_product_id {
 	ICX3_PRODUCT_NONE = 0
 };
 
+enum icx3_fan_mode {
+	ICX3_FANMODE_DEFAULT,
+	ICX3_FANMODE_GPU_CONTROL,
+	ICX3_FANMODE_RPM,
+	ICX3_FANMODE_GPU_RPM_OFFSET,
+	ICX3_FANMODE_MCU_CURVE,
+	ICX3_FANMODE_MODE3,
+};
+
+static unsigned char icx3_write_enable[ICX3_ENABLEWRITE_SIZE] = {ICX3_ENABLEWRITE_SIZE-1, 198, 235, 234, 21};
+static unsigned char icx3_write_disable[ICX3_ENABLEWRITE_SIZE] = {ICX3_ENABLEWRITE_SIZE-1, 144, 235, 203, 52};
+
 static char *icx3_fan_names[] = {
+	"Fan 0", 
 	"Fan 1", 
 	"Fan 2", 
-	"Fan 3", 
 	"Ext. fan"
 };
 
@@ -99,3 +114,7 @@ static char *icx3_temp_sensor_names[] = {
 enum icx3_product_id check_for_icx3(char *i2c_dev_path);
 void print_icx3_fans(char *i2c_dev_path);
 void print_icx3_temps(char *i2c_dev_path);
+void get_available_fans(char *i2c_dev_path, char *fans_avail);
+int open_i2c_dev(char *i2c_dev_path);
+void enable_write(int enable, char *i2c_dev_path);
+void set_fan(int fan, char *setting, char *i2c_dev_path);