add en4 support, reduce some duplication

2 files changed, 458 insertions, 489 deletions

diff --git a/io-module/mts_io.c b/io-module/mts_io.c
index c62b534..225131a 100644
--- a/io-module/mts_io.c
+++ b/io-module/mts_io.c
@@ -41,7 +41,7 @@
 
 #include "mts_io.h"
 
-#define DRIVER_VERSION	"v0.5.1"
+#define DRIVER_VERSION	"v0.6.0"
 #define DRIVER_AUTHOR	"James Maki <jmaki@multitech.com>"
 #define DRIVER_DESC	"MTCDP IO Controller"
 #define DRIVER_NAME	"mts-io"
@@ -97,6 +97,7 @@ enum {
 
 struct gpio_pin {
 	char name[32];
+	char attr_name[32];
 	unsigned pin;
 	int direction;
 	int output_value;
@@ -104,12 +105,16 @@ struct gpio_pin {
 };
 
 static uint8_t mts_product_id;
+static uint8_t has_spi_sout;
+static uint8_t has_spi_din;
+static uint8_t has_spi_dout;
 
 static struct gpio_pin *gpio_pins;
 
 static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 	{
 		.name = "ENIO",
+		.attr_name = "",
 		.pin = AT91_PIN_PC15,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -117,6 +122,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 	},
 	{
 		.name = "ETH0_ENABLED",
+		.attr_name = "eth0-enabled",
 		.pin = AT91_PIN_PB31,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -124,6 +130,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 	},
 	{
 		.name = "RADIO_RESET",
+		.attr_name = "radio-reset",
 		.pin = AT91_PIN_PB30,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -131,6 +138,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 	},
 	{
 		.name = "DEVICE_RESET",
+		.attr_name = "reset",
 		.pin = AT91_PIN_PA22,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -138,6 +146,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 	},
 	{
 		.name = "LS_LED",
+		.attr_name = "led-ls",
 		.pin = AT91_PIN_PC9,
 #if LED_LS_CONTROLLABLE
 		.direction = GPIO_DIR_OUTPUT,
@@ -150,6 +159,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 #if LED_STATUS_CONTROLLABLE
 	{
 		.name = "STATUS_LED",
+		.attr_name = "led-status",
 		.pin = AT91_PIN_PA30,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -158,6 +168,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 #endif
 	{
 		.name = "RSERSRC",
+		.attr_name = "rsersrc",
 		.pin = AT91_PIN_PC7,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -165,6 +176,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 	},
 	{
 		.name = "DTR1",
+		.attr_name = "extserial-dtr",
 		.pin = AT91_PIN_PC10,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -176,6 +188,7 @@ static struct gpio_pin gpio_pins_mtcdp_0_0[] = {
 static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	{
 		.name = "ENIO",
+		.attr_name = "",
 		.pin = AT91_PIN_PC15,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -183,6 +196,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "ETH0_ENABLED",
+		.attr_name = "eth0-enabled",
 		.pin = AT91_PIN_PB31,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -190,6 +204,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "RADIO_RESET",
+		.attr_name = "radio-reset",
 		.pin = AT91_PIN_PB30,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -197,6 +212,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "DEVICE_RESET",
+		.attr_name = "reset",
 		.pin = AT91_PIN_PA22,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -204,6 +220,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "LS_LED",
+		.attr_name = "led-ls",
 		.pin = AT91_PIN_PC9,
 #if LED_LS_CONTROLLABLE
 		.direction = GPIO_DIR_OUTPUT,
@@ -217,6 +234,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 #if LED_STATUS_CONTROLLABLE
 	{
 		.name = "STATUS_LED",
+		.attr_name = "led-status",
 		.pin = AT91_PIN_PA30,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -225,6 +243,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 #endif
 	{
 		.name = "RSERSRC",
+		.attr_name = "rsersrc",
 		.pin = AT91_PIN_PC7,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -232,6 +251,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "TXD1",
+		.attr_name = "",
 		.pin = AT91_PIN_PB17,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -239,6 +259,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "DTR1",
+		.attr_name = "extserial-dtr",
 		.pin = AT91_PIN_PB18,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -246,6 +267,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 	},
 	{
 		.name = "USBH2_PS_OC",
+		.attr_name = "usbh2-ps-oc",
 		.pin = AT91_PIN_PB19,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -254,6 +276,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 #if USBH2_PS_CONTROLLABLE
 	{
 		.name = "USBH2_PS_ENABLED",
+		.attr_name = "usbh2-ps-enabled",
 		.pin = AT91_PIN_PB20,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 0,
@@ -262,6 +285,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 #endif
 	{
 		.name = "NDC_RESET",
+		.attr_name = "ndc-reset",
 		.pin = AT91_PIN_PB21,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -273,6 +297,7 @@ static struct gpio_pin gpio_pins_mtcdp_1_0[] = {
 static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	{
 		.name = "ENIO",
+		.attr_name = "",
 		.pin = AT91_PIN_PC15,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -280,6 +305,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "ETH0_ENABLED",
+		.attr_name = "eth0-enabled",
 		.pin = AT91_PIN_PB31,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -287,6 +313,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "RADIO_RESET",
+		.attr_name = "radio-reset",
 		.pin = AT91_PIN_PB30,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -294,6 +321,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "DEVICE_RESET",
+		.attr_name = "reset",
 		.pin = AT91_PIN_PA22,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -301,6 +329,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "LED3",
+		.attr_name = "led-ls",
 		.pin = AT91_PIN_PC9,
 #if LED_LS_CONTROLLABLE
 		.direction = GPIO_DIR_OUTPUT,
@@ -312,6 +341,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "LED2",
+		.attr_name = "led2",
 		.pin = AT91_PIN_PA30,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -319,6 +349,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "RSERSRC",
+		.attr_name = "rsersrc",
 		.pin = AT91_PIN_PC7,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -326,6 +357,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "TXD1",
+		.attr_name = "",
 		.pin = AT91_PIN_PB17,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -333,6 +365,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "DTR1",
+		.attr_name = "extserial-dtr",
 		.pin = AT91_PIN_PB18,
 		.direction = GPIO_DIR_INPUT,
 		.output_value = 0,
@@ -340,6 +373,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "DCD1",
+		.attr_name = "extserial-dcd",
 		.pin = AT91_PIN_PB3,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -347,6 +381,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "GPIO11",
+		.attr_name = "gpio11",
 		.pin = AT91_PIN_PB19,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -354,6 +389,7 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	},
 	{
 		.name = "GPIO12",
+		.attr_name = "gpio12",
 		.pin = AT91_PIN_PB20,
 		.direction = GPIO_DIR_OUTPUT,
 		.output_value = 1,
@@ -362,6 +398,168 @@ static struct gpio_pin gpio_pins_mt100eocg_0_0[] = {
 	{ },
 };
 
+static struct gpio_pin gpio_pins_en4_0_0[] = {
+	{
+		.name = "ETH0_ENABLED",
+		.attr_name = "eth0-enabled",
+		.pin = AT91_PIN_PC6,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "RADIO_RESET",
+		.attr_name = "radio-reset",
+		.pin = AT91_PIN_PC5,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "DEVICE_RESET",
+		.attr_name = "reset",
+		.pin = AT91_PIN_PC4,
+		.direction = GPIO_DIR_INPUT,
+		.output_value = 0,
+		.use_pullup = 0,
+	},
+	{
+		.name = "LS_LED",
+		.attr_name = "led-ls",
+		.pin = AT91_PIN_PA29,
+#if LED_LS_CONTROLLABLE
+		.direction = GPIO_DIR_OUTPUT,
+#else
+		.direction = GPIO_DIR_INPUT,
+#endif
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+#if LED_STATUS_CONTROLLABLE
+	{
+		.name = "STATUS_LED",
+		.attr_name = "led-status",
+		.pin = AT91_PIN_PA24,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+#endif
+	{
+		.name = "LED7",
+		.attr_name = "led-cd",
+		.pin = AT91_PIN_PA25,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "LED10",
+		.attr_name = "led-sig1",
+		.pin = AT91_PIN_PA26,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "LED11",
+		.attr_name = "led-sig2",
+		.pin = AT91_PIN_PA27,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "LED12",
+		.attr_name = "led-sig3",
+		.pin = AT91_PIN_PA28,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "RSERSRC",
+		.attr_name = "rsersrc",
+		.pin = AT91_PIN_PC14,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "DTR1",
+		.attr_name = "extserial-dtr",
+		.pin = AT91_PIN_PC12,
+		.direction = GPIO_DIR_INPUT,
+		.output_value = 0,
+		.use_pullup = 0,
+	},
+	{
+		.name = "DSR1",
+		.attr_name = "extserial-dsr",
+		.pin = AT91_PIN_PC11,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "DCD1",
+		.attr_name = "extserial-dcd",
+		.pin = AT91_PIN_PC10,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "RI1",
+		.attr_name = "extserial-ri",
+		.pin = AT91_PIN_PC13,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "NDC_RESET",
+		.attr_name = "ndc-reset",
+		.pin = AT91_PIN_PC3,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "BT_EN",
+		.attr_name = "bt-enabled",
+		.pin = AT91_PIN_PC0,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "WLAN_EN",
+		.attr_name = "wlan-enabled",
+		.pin = AT91_PIN_PC1,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{
+		.name = "SERIAL_MODE0",
+		.attr_name = "",
+		.pin = AT91_PIN_PC23,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 0,
+		.use_pullup = 0,
+	},
+	{
+		.name = "SERIAL_MODE2",
+		.attr_name = "",
+		.pin = AT91_PIN_PC24,
+		.direction = GPIO_DIR_OUTPUT,
+		.output_value = 1,
+		.use_pullup = 0,
+	},
+	{ },
+};
+
 
 struct gpio_pin *gpio_pin_by_name(const char *name) {
 	struct gpio_pin *pin;
@@ -377,6 +575,20 @@ struct gpio_pin *gpio_pin_by_name(const char *name) {
 	return NULL;
 }
 
+struct gpio_pin *gpio_pin_by_attr_name(const char *name) {
+	struct gpio_pin *pin;
+
+	for (pin = gpio_pins; *pin->attr_name; pin++) {
+		if (!strcmp(pin->attr_name, name)) {
+			return pin;
+		}
+	}
+
+	log_error("pin with attr name %s not found", name);
+
+	return NULL;
+}
+
 extern uint8_t mts_id_eeprom[512];
 static struct mts_id_eeprom_layout id_eeprom;
 
@@ -385,6 +597,9 @@ static int mts_id_eeprom_load(void)
 	memcpy(&id_eeprom, mts_id_eeprom, sizeof(mts_id_eeprom));
 
 	mts_product_id = MTCDP_E1_DK_1_0;
+	has_spi_sout = 1;
+	has_spi_din = 1;
+	has_spi_dout = 1;
 
 	if (mts_id_eeprom[0] == 0xFF) {
 		log_error("uninitialized eeprom");
@@ -402,9 +617,21 @@ static int mts_id_eeprom_load(void)
 	} else if (strncmp(id_eeprom.product_id, PRODUCT_ID_MT100EOCG, strlen(PRODUCT_ID_MT100EOCG)) == 0) {
 		gpio_pins = gpio_pins_mt100eocg_0_0;
 		mts_product_id = MT100EOCG_0_0;
+		has_spi_sout = 0;
+		has_spi_din = 1;
+		has_spi_dout = 1;
+	} else if (strncmp(id_eeprom.product_id, PRODUCT_ID_EN4, strlen(PRODUCT_ID_EN4)) == 0) {
+		gpio_pins = gpio_pins_en4_0_0;
+		mts_product_id = EN4_0_0;
+		has_spi_sout = 0;
+		has_spi_din = 0;
+		has_spi_dout = 0;
 	} else {
 		gpio_pins = gpio_pins_mtcdp_1_0;
 		mts_product_id = MTCDP_E1_DK_1_0;
+		has_spi_sout = 1;
+		has_spi_din = 1;
+		has_spi_dout = 1;
 	}
 
 	log_info("sizeof: %lu", (unsigned long) sizeof(struct mts_id_eeprom_layout));
@@ -647,26 +874,36 @@ static int ADT7302_to_celsius(int value)
 #define MTS_ATTR_MODE_RW		S_IWUSR | S_IRUGO
 #define MTS_ATTR_MODE_RO		S_IRUGO
 
-#define MTS_ATTR_NAME(name)		mts_attr_##name
-#define MTS_ATTR_SHOW(name)		mts_attr_show_##name
-#define MTS_ATTR_STORE(name)		mts_attr_store_##name
-
-#define MTS_ATTR(name, attr_name, attr_mode, show, store) \
-static struct device_attribute MTS_ATTR_NAME(name) = \
-	.attr = { \
-		.name = attr_name, \
-		.mode = attr_mode, \
-	}, \
-	.show = show, \
-	.store = store, \
+static ssize_t mts_attr_show_gpio_pin(struct device *dev,
+			struct device_attribute *attr,
+			char *buf)
+{
+	int value;
+	struct gpio_pin *pin = gpio_pin_by_attr_name(attr->attr.name);
+
+	if (!pin) {
+		return -ENODEV;
+	}
+
+	mutex_lock(&mts_io_mutex);
+
+	value = at91_get_gpio_value(pin->pin);
+
+	mutex_unlock(&mts_io_mutex);
+
+	if (value < 0) {
+		return value;
+	}
+
+	return sprintf(buf, "%d\n", value);
 }
 
-static ssize_t mts_attr_show_radio_reset(struct device *dev,
+static ssize_t mts_attr_show_gpio_pin_inverted(struct device *dev,
 			struct device_attribute *attr,
 			char *buf)
 {
 	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("RADIO_RESET");
+	struct gpio_pin *pin = gpio_pin_by_attr_name(attr->attr.name);
 
 	if (!pin) {
 		return -ENODEV;
@@ -682,25 +919,27 @@ static ssize_t mts_attr_show_radio_reset(struct device *dev,
 		return value;
 	}
 
-	return sprintf(buf, "%d\n", value);
+	return sprintf(buf, "%d\n", !value);
 }
 
-static ssize_t mts_attr_store_radio_reset(struct device *dev,
+static ssize_t mts_attr_store_gpio_pin(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int value;
 	int err;
+	struct gpio_pin *pin = gpio_pin_by_attr_name(attr->attr.name);
 
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
+	if (!pin) {
+		return -ENODEV;
 	}
-	if (value != 0) {
+
+	if (sscanf(buf, "%i", &value) != 1) {
 		return -EINVAL;
 	}
 
 	mutex_lock(&mts_io_mutex);
 
-	err = radio_reset();
+	err = at91_set_gpio_value(pin->pin, value);
 
 	mutex_unlock(&mts_io_mutex);
 
@@ -711,40 +950,35 @@ static ssize_t mts_attr_store_radio_reset(struct device *dev,
 	return count;
 }
 
-static struct device_attribute dev_attr_radio_reset = {
-	.attr = {
-		.name = "radio-reset",
-		.mode = MTS_ATTR_MODE_RW,
-	},
-	.show = mts_attr_show_radio_reset,
-	.store = mts_attr_store_radio_reset,
-};
-
-static ssize_t mts_attr_show_ndc_reset(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
+static ssize_t mts_attr_store_gpio_pin_inverted(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("NDC_RESET");
+	int err;
+	struct gpio_pin *pin = gpio_pin_by_attr_name(attr->attr.name);
 
 	if (!pin) {
 		return -ENODEV;
 	}
 
+	if (sscanf(buf, "%i", &value) != 1) {
+		return -EINVAL;
+	}
+
 	mutex_lock(&mts_io_mutex);
 
-	value = at91_get_gpio_value(pin->pin);
+	err = at91_set_gpio_value(pin->pin, !value);
 
 	mutex_unlock(&mts_io_mutex);
 
-	if (value < 0) {
-		return value;
+	if (err) {
+		return err;
 	}
 
-	return sprintf(buf, "%d\n", value);
+	return count;
 }
 
-static ssize_t mts_attr_store_ndc_reset(struct device *dev,
+static ssize_t mts_attr_store_radio_reset(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int value;
@@ -759,7 +993,7 @@ static ssize_t mts_attr_store_ndc_reset(struct device *dev,
 
 	mutex_lock(&mts_io_mutex);
 
-	err = ndc_reset();
+	err = radio_reset();
 
 	mutex_unlock(&mts_io_mutex);
 
@@ -770,57 +1004,31 @@ static ssize_t mts_attr_store_ndc_reset(struct device *dev,
 	return count;
 }
 
-static struct device_attribute dev_attr_ndc_reset = {
+static struct device_attribute dev_attr_radio_reset = {
 	.attr = {
-		.name = "ndc-reset",
+		.name = "radio-reset",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_ndc_reset,
-	.store = mts_attr_store_ndc_reset,
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_radio_reset,
 };
 
-static ssize_t mts_attr_show_eth0_enabled(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("ETH0_ENABLED");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", value);
-}
-
-static ssize_t mts_attr_store_eth0_enabled(struct device *dev,
+static ssize_t mts_attr_store_ndc_reset(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int value;
 	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("ETH0_ENABLED");
-
-	if (!pin) {
-		return -ENODEV;
-	}
 
 	if (sscanf(buf, "%i", &value) != 1) {
 		return -EINVAL;
 	}
+	if (value != 0) {
+		return -EINVAL;
+	}
 
 	mutex_lock(&mts_io_mutex);
 
-	err = at91_set_gpio_value(pin->pin, value);
+	err = ndc_reset();
 
 	mutex_unlock(&mts_io_mutex);
 
@@ -831,15 +1039,41 @@ static ssize_t mts_attr_store_eth0_enabled(struct device *dev,
 	return count;
 }
 
+static struct device_attribute dev_attr_ndc_reset = {
+	.attr = {
+		.name = "ndc-reset",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_ndc_reset,
+};
+
 static struct device_attribute dev_attr_eth0_enabled = {
 	.attr = {
 		.name = "eth0-enabled",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_eth0_enabled,
-	.store = mts_attr_store_eth0_enabled,
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_gpio_pin,
+};
+
+static struct device_attribute dev_attr_bt_enabled = {
+	.attr = {
+		.name = "bt-enabled",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_gpio_pin,
 };
 
+static struct device_attribute dev_attr_wlan_enabled = {
+	.attr = {
+		.name = "wlan-enabled",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_gpio_pin,
+};
 
 static ssize_t mts_attr_store_sout(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
@@ -1336,37 +1570,30 @@ static struct device_attribute dev_attr_din7 = {
 	.show = mts_attr_show_din,
 };
 
-
-static ssize_t mts_attr_show_extserial_dtr(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("DTR1");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = !at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", value);
-}
-
 static struct device_attribute dev_attr_extserial_dtr = {
 	.attr = {
 		.name = "extserial-dtr",
 		.mode = MTS_ATTR_MODE_RO,
 	},
-	.show = mts_attr_show_extserial_dtr,
+	.show = mts_attr_show_gpio_pin_inverted,
+};
+
+static struct device_attribute dev_attr_extserial_dsr_gpio = {
+	.attr = {
+		.name = "extserial-dsr",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
+};
+
+static struct device_attribute dev_attr_extserial_ri_gpio = {
+	.attr = {
+		.name = "extserial-ri",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
 };
 
 #if LED_STATUS_CONTROLLABLE
@@ -1516,40 +1743,52 @@ static struct device_attribute dev_attr_led_ls = {
 		.mode = MTS_ATTR_MODE_RO,
 #endif
 	},
-	.show = mts_attr_show_led_ls,
-	.store = mts_attr_store_led_ls,
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
 };
 
-static ssize_t mts_attr_show_reset(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("DEVICE_RESET");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = !at91_get_gpio_value(pin->pin);
+static struct device_attribute dev_attr_led_sig1_gpio = {
+	.attr = {
+		.name = "led-sig1",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
+};
 
-	mutex_unlock(&mts_io_mutex);
+static struct device_attribute dev_attr_led_sig2_gpio = {
+	.attr = {
+		.name = "led-sig2",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
+};
 
-	if (value < 0) {
-		return value;
-	}
+static struct device_attribute dev_attr_led_sig3_gpio = {
+	.attr = {
+		.name = "led-sig3",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
+};
 
-	return sprintf(buf, "%d\n", value);
-}
+static struct device_attribute dev_attr_led_cd_gpio = {
+	.attr = {
+		.name = "led-cd",
+		.mode = MTS_ATTR_MODE_RW,
+	},
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
+};
 
 static struct device_attribute dev_attr_reset = {
 	.attr = {
 		.name = "reset",
 		.mode = MTS_ATTR_MODE_RO,
 	},
-	.show = mts_attr_show_reset,
+	.show = mts_attr_show_gpio_pin_inverted,
 };
 
 static ssize_t mts_attr_show_reset_monitor(struct device *dev,
@@ -1715,355 +1954,25 @@ static struct device_attribute dev_attr_adc3 = {
 	.show = mts_attr_show_adc,
 };
 
-static ssize_t mts_attr_show_usbh2_ps_oc(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("USBH2_PS_OC");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", !value);
-}
-
 static struct device_attribute dev_attr_usbh2_ps_oc = {
 	.attr = {
 		.name = "usbh2-ps-oc",
 		.mode = MTS_ATTR_MODE_RO,
 	},
-	.show = mts_attr_show_usbh2_ps_oc,
+	.show = mts_attr_show_gpio_pin_inverted,
 };
 
 #if USBH2_PS_CONTROLLABLE
-static ssize_t mts_attr_show_usbh2_ps_enabled(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("USBH2_PS_ENABLED");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", !value);
-}
-
-static ssize_t mts_attr_store_usbh2_ps_enabled(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	int value;
-	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("USBH2_PS_ENABLED");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	err = at91_set_gpio_value(pin->pin, !value);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (err) {
-		return err;
-	}
-
-	return count;
-}
-
 static struct device_attribute dev_attr_usbh2_ps_enabled = {
 	.attr = {
 		.name = "usbh2-ps-enabled",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_usbh2_ps_enabled,
-	.store = mts_attr_store_usbh2_ps_enabled,
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
 };
 #endif
 
-
-static ssize_t mts_attr_show_led2(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("LED2");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", !value);
-}
-
-static ssize_t mts_attr_store_led2(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	int value;
-	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("LED2");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	err = at91_set_gpio_value(pin->pin, !value);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (err) {
-		return err;
-	}
-
-	return count;
-}
-
-static ssize_t mts_attr_show_gpio11(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("GPIO11");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", value);
-}
-
-static ssize_t mts_attr_store_gpio11(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	int value;
-	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("GPIO11");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	err = at91_set_gpio_value(pin->pin, value);
-
-	mutex_unlock(&mts_io_mutex);
-
-	return count;
-}
-
-static ssize_t mts_attr_show_gpio12(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("GPIO12");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", value);
-}
-
-static ssize_t mts_attr_store_gpio12(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	int value;
-	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("GPIO12");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	err = at91_set_gpio_value(pin->pin, value);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (err) {
-		return err;
-	}
-
-	return count;
-}
-
-static ssize_t mts_attr_show_rsersrc(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("RSERSRC");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", !value);
-}
-
-static ssize_t mts_attr_store_rsersrc(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	int value;
-	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("RSERSRC");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	err = at91_set_gpio_value(pin->pin, !value);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (err) {
-		return err;
-	}
-
-	return count;
-}
-
-static ssize_t mts_attr_show_cd(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	int value;
-	struct gpio_pin *pin = gpio_pin_by_name("DCD1");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	value = at91_get_gpio_value(pin->pin);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (value < 0) {
-		return value;
-	}
-
-	return sprintf(buf, "%d\n", !value);
-}
-
-static ssize_t mts_attr_store_cd(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	int value;
-	int err;
-	struct gpio_pin *pin = gpio_pin_by_name("DCD1");
-
-	if (!pin) {
-		return -ENODEV;
-	}
-
-	if (sscanf(buf, "%i", &value) != 1) {
-		return -EINVAL;
-	}
-
-	mutex_lock(&mts_io_mutex);
-
-	err = at91_set_gpio_value(pin->pin, !value);
-
-	mutex_unlock(&mts_io_mutex);
-
-	if (err) {
-		return err;
-	}
-
-	return count;
-}
-
-
 static struct device_attribute dev_attr_gpo1 = {
 	.attr = {
 		.name = "gpo1",
@@ -2162,8 +2071,8 @@ static struct device_attribute dev_attr_led2 = {
 		.name = "led2",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_led2,
-	.store = mts_attr_store_led2,
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
 };
 
 static struct device_attribute dev_attr_led3 = {
@@ -2211,8 +2120,8 @@ static struct device_attribute dev_attr_gpio11 = {
 		.name = "gpio11",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_gpio11,
-	.store = mts_attr_store_gpio11,
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_gpio_pin,
 };
 
 static struct device_attribute dev_attr_gpio12 = {
@@ -2220,8 +2129,8 @@ static struct device_attribute dev_attr_gpio12 = {
 		.name = "gpio12",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_gpio12,
-	.store = mts_attr_store_gpio12,
+	.show = mts_attr_show_gpio_pin,
+	.store = mts_attr_store_gpio_pin,
 };
 
 static struct device_attribute dev_attr_rsersrc = {
@@ -2229,8 +2138,8 @@ static struct device_attribute dev_attr_rsersrc = {
 		.name = "rsersrc",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_rsersrc,
-	.store = mts_attr_store_rsersrc,
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
 };
 
 static struct device_attribute dev_attr_extserial_cd = {
@@ -2238,8 +2147,8 @@ static struct device_attribute dev_attr_extserial_cd = {
 		.name = "extserial-dcd",
 		.mode = MTS_ATTR_MODE_RW,
 	},
-	.show = mts_attr_show_cd,
-	.store = mts_attr_store_cd,
+	.show = mts_attr_show_gpio_pin_inverted,
+	.store = mts_attr_store_gpio_pin_inverted,
 };
 
 
@@ -2284,6 +2193,30 @@ static struct attribute_group mt100eocg_platform_attribute_group = {
 	.attrs = mt100eocg_platform_attributes
 };
 
+static struct attribute *en4_platform_attributes[] = {
+	&dev_attr_extserial_dtr.attr,
+	&dev_attr_extserial_dsr_gpio.attr,
+	&dev_attr_extserial_ri_gpio.attr,
+	&dev_attr_extserial_cd.attr,
+	&dev_attr_rsersrc.attr,
+	&dev_attr_radio_reset.attr,
+	&dev_attr_eth0_enabled.attr,
+	&dev_attr_bt_enabled.attr,
+	&dev_attr_wlan_enabled.attr,
+
+	&dev_attr_led_sig1_gpio.attr,
+	&dev_attr_led_sig2_gpio.attr,
+	&dev_attr_led_sig3_gpio.attr,
+	&dev_attr_led_cd_gpio.attr,
+
+	&dev_attr_board_temperature.attr,
+
+	NULL,
+};
+
+static struct attribute_group en4_platform_attribute_group = {
+	.attrs = en4_platform_attributes
+};
 
 static struct attribute *platform_attributes[] = {
 	&dev_attr_reset.attr,
@@ -2548,6 +2481,13 @@ static int __init mts_io_init(void)
 			goto error3;
 		}
 	}
+	else if ( mts_product_id == EN4_0_0 ) {
+		ret = sysfs_create_group(&mts_io_platform_device->dev.kobj,
+						&en4_platform_attribute_group);
+		if (ret) {
+			goto error3;
+		}
+	}
 	else {
 		ret = sysfs_create_group(&mts_io_platform_device->dev.kobj,
 						&platform_attribute_group);
@@ -2556,30 +2496,37 @@ static int __init mts_io_init(void)
 		}
 	}
 
-	// No sout driver for MT100EOCG
-	if ( mts_product_id != MT100EOCG_0_0 ) {
+	if ( has_spi_sout ) {
 		ret = spi_register_driver(&mts_spi_sout_driver);
 		if (ret) {
 			goto error4;
 		}
 	}
 
+
 	ret = spi_register_driver(&mts_spi_board_temp_driver);
 	if (ret) {
 		goto error7;
 	}
 
-	ret = spi_register_driver(&mts_spi_dout_driver);
-	if (ret) {
-		goto error5;
+	if ( has_spi_dout ) {
+		ret = spi_register_driver(&mts_spi_dout_driver);
+		if (ret) {
+			goto error5;
+		}
 	}
-
-	ret = spi_register_driver(&mts_spi_din_driver);
-	if (ret) {
-		goto error6;
+	if ( has_spi_din ) {
+		ret = spi_register_driver(&mts_spi_din_driver);
+		if (ret) {
+			goto error6;
+		}
 	}
 
+#ifdef CONFIG_ARCH_AT91SAM9X5
+	adc_base = ioremap(AT91SAM9X5_BASE_ADC, SZ_16K);
+#else
 	adc_base = ioremap(AT91SAM9260_BASE_ADC, SZ_16K);
+#endif
 	if (!adc_base) {
 		goto error8;
 	}
@@ -2621,9 +2568,11 @@ static int __init mts_io_init(void)
 		}
 	}
 
-	pin = gpio_pin_by_name("ENIO");
-	if (pin) {
-		at91_set_gpio_value(pin->pin, 0);
+	if ( has_spi_sout || has_spi_dout || has_spi_din ) {
+		    pin = gpio_pin_by_name("ENIO");
+		    if (pin) {
+			    at91_set_gpio_value(pin->pin, 0);
+		    }
 	}
 
 	// No blink_callback for MT100EOCG
@@ -2638,11 +2587,15 @@ error9:
 error8:
 	spi_unregister_driver(&mts_spi_board_temp_driver);
 error7:
-	spi_unregister_driver(&mts_spi_din_driver);
+	if ( has_spi_din ) {
+		spi_unregister_driver(&mts_spi_din_driver);
+	}
 error6:
-	spi_unregister_driver(&mts_spi_dout_driver);
+	if ( has_spi_dout ) {
+		spi_unregister_driver(&mts_spi_dout_driver);
+	}
 error5:
-	if ( mts_product_id != MT100EOCG_0_0 ) {
+	if ( has_spi_sout ) {
 		spi_unregister_driver(&mts_spi_sout_driver);
 	}
 error4:
@@ -2650,6 +2603,10 @@ error4:
 		sysfs_remove_group(&mts_io_platform_device->dev.kobj,
 					&mt100eocg_platform_attribute_group);
 	}
+	else if ( mts_product_id == EN4_0_0 ) {
+		sysfs_remove_group(&mts_io_platform_device->dev.kobj,
+					&en4_platform_attribute_group);
+	}
 	else {
 		sysfs_remove_group(&mts_io_platform_device->dev.kobj,
 					&platform_attribute_group);
@@ -2674,17 +2631,26 @@ static void __exit mts_io_exit(void)
 	clk_disable(adc_clk);
 	clk_put(adc_clk);
 
-	spi_unregister_driver(&mts_spi_din_driver);
-	spi_unregister_driver(&mts_spi_dout_driver);
 	spi_unregister_driver(&mts_spi_board_temp_driver);
 
+	if (has_spi_din)
+		spi_unregister_driver(&mts_spi_din_driver);
+
+	if (has_spi_dout)
+		spi_unregister_driver(&mts_spi_dout_driver);
+
+	if (has_spi_sout)
+		spi_unregister_driver(&mts_spi_sout_driver);
+
 	if ( mts_product_id == MT100EOCG_0_0 ) {
 		sysfs_remove_group(&mts_io_platform_device->dev.kobj,
 					&mt100eocg_platform_attribute_group);
 	}
+	else if ( mts_product_id == EN4_0_0 ) {
+		sysfs_remove_group(&mts_io_platform_device->dev.kobj,
+					&en4_platform_attribute_group);
+	}
 	else {
-		spi_unregister_driver(&mts_spi_sout_driver);
-
 		sysfs_remove_group(&mts_io_platform_device->dev.kobj,
 					&platform_attribute_group);
 	}
diff --git a/io-module/mts_io.h b/io-module/mts_io.h
index c15d5b0..633a194 100644
--- a/io-module/mts_io.h
+++ b/io-module/mts_io.h
@@ -13,16 +13,19 @@
 #define VENDOR_ID_MULTITECH			"Multi-Tech Systems"
 #define PRODUCT_ID_MTCDP_E1_DK			"MTCDP-E1-DK"
 #define PRODUCT_ID_MT100EOCG			"MT100EOCG"
+#define PRODUCT_ID_EN4					"EN4"
 
 #define HW_VERSION_MTCBA2_2_0			"MTCBA2-2.0"
 #define HW_VERSION_MTCDP_0_0			"MTCDP-0.0"
 #define HW_VERSION_MTCDP_1_0			"MTCDP-1.0"
 #define HW_VERSION_MT100EOCG_0_0		"MT100EOCG-0.0"
+#define HW_VERSION_EN4					"EN4-0.0"
 
 enum {
 	MTCDP_E1_DK_0_0,
 	MTCDP_E1_DK_1_0,
-	MT100EOCG_0_0
+	MT100EOCG_0_0,
+	EN4_0_0
 };
 
 #define DEVICE_CAPA_INDEX(c)			(((c) & 0xFF) >> 3)