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authorSean Godinez <sgodinez@multitech.com>2013-07-18 11:14:06 -0500
committerSean Godinez <sgodinez@multitech.com>2013-07-18 11:14:06 -0500
commit5b405021260a35757d594bddc313b75d2c15a994 (patch)
treeadeeae1966d0a9d986366f2ee5e977addf049f4b /io-module
parent7a6e6d70d77aa2176716f6b3e9b3a81e069a0c14 (diff)
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added radio-power attribute to turn off/on and status power to the radio for mtr/mtr2
Diffstat (limited to 'io-module')
-rw-r--r--io-module/mts_io.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/io-module/mts_io.c b/io-module/mts_io.c
index ba9996f..211dbc4 100644
--- a/io-module/mts_io.c
+++ b/io-module/mts_io.c
@@ -636,6 +636,15 @@ static struct gpio_pin gpio_pins_mtr_0_0[] = {
.use_pullup = 0,
},
{
+ .name = "PWRMON",
+ .attr_name = "radio-power",
+ .pin = AT91_PIN_PA23,
+ .direction = GPIO_DIR_INPUT,
+ .output_value = 0,
+ .use_pullup = 0,
+ .active_low = 0,
+ },
+ {
.name = "3G_RST",
.attr_name = "radio-reset",
.pin = AT91_PIN_PA22,
@@ -837,6 +846,15 @@ static struct gpio_pin gpio_pins_mtr_0_1[] = {
.use_pullup = 0,
},
{
+ .name = "PWRMON",
+ .attr_name = "radio-power",
+ .pin = AT91_PIN_PA23,
+ .direction = GPIO_DIR_INPUT,
+ .output_value = 0,
+ .use_pullup = 0,
+ .active_low = 0,
+ },
+ {
.name = "3G_RST",
.attr_name = "radio-reset",
.pin = AT91_PIN_PA22,
@@ -1217,6 +1235,177 @@ static void blink_callback(struct work_struct *ignored)
schedule_delayed_work(&blink_work, BLINK_INTERVAL);
}
+static int radio_off_telit(void)
+{
+ int value, ret;
+ struct gpio_pin *pwrmon_pin = gpio_pin_by_name("PWRMON");
+ struct gpio_pin *onoff_pin = gpio_pin_by_name("3G_ONOFF");
+ struct gpio_pin *rst_pin = gpio_pin_by_name("3G_RST");
+
+ if (!onoff_pin || !pwrmon_pin || !rst_pin) {
+ return -ENODEV;
+ }
+
+ value = at91_get_gpio_value(pwrmon_pin->pin);
+ if(value == 0) {
+ log_error("radio is already off");
+ return -EINVAL;
+ }
+
+ // drive on/off pin low for at least 3 sec
+ log_info("shutting down radio");
+ ret = at91_set_gpio_output_with_pullup(onoff_pin->pin, 0, onoff_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+
+ msleep(3500);
+
+ // set on/off pin high
+ ret = at91_set_gpio_output_with_pullup(onoff_pin->pin, 1, onoff_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+
+ msleep(200);
+
+ // check that power is low
+ value = at91_get_gpio_value(pwrmon_pin->pin);
+ if(value != 0) {
+ log_warning("radio is still on. performing radio reset.");
+ //Perform Hard Reset
+ ret = at91_set_gpio_output_with_pullup(rst_pin->pin, 0, rst_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+
+ msleep(500);
+
+ // set pin high
+ ret = at91_set_gpio_output_with_pullup(rst_pin->pin, 1, rst_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+ } else {
+ log_info("radio has been shut down");
+ }
+
+ return ret;
+}
+
+static int radio_on_telit(void)
+{
+ int value, ret;
+ struct gpio_pin *pwrmon_pin = gpio_pin_by_name("PWRMON");
+ struct gpio_pin *onoff_pin = gpio_pin_by_name("3G_ONOFF");
+ struct gpio_pin *rst_pin = gpio_pin_by_name("3G_RST");
+
+ if (!onoff_pin || !pwrmon_pin || !rst_pin) {
+ return -ENODEV;
+ }
+
+ value = at91_get_gpio_value(pwrmon_pin->pin);
+ if(value != 0) {
+ log_error("radio is already on");
+ return -EINVAL;
+ }
+
+ // drive on/off pin low for at least 5 sec
+ log_info("turning on radio");
+ ret = at91_set_gpio_output_with_pullup(onoff_pin->pin, 0, onoff_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+
+ msleep(5500);
+
+ // set on/off pin high
+ ret = at91_set_gpio_output_with_pullup(onoff_pin->pin, 1, onoff_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+
+ msleep(200);
+
+ // check that power is high
+ value = at91_get_gpio_value(pwrmon_pin->pin);
+ if(value == 0) {
+ log_warning("radio is still off. performing radio reset");
+ //Perform Hard Reset
+ ret = at91_set_gpio_output_with_pullup(rst_pin->pin, 0, rst_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+
+ msleep(500);
+
+ // set pin high
+ ret = at91_set_gpio_output_with_pullup(rst_pin->pin, 1, rst_pin->use_pullup);
+ if (ret) {
+ return ret;
+ }
+ } else {
+ log_info("radio has been turned on");
+ }
+
+ return ret;
+}
+
+static ssize_t mts_attr_store_radio_power_telit(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int value;
+ int err;
+
+ if (sscanf(buf, "%i", &value) != 1) {
+ return -EINVAL;
+ }
+ if (value == 0) {
+ mutex_lock(&mts_io_mutex);
+ err = radio_off_telit();
+ mutex_unlock(&mts_io_mutex);
+ } else {
+ mutex_lock(&mts_io_mutex);
+ err = radio_on_telit();
+ mutex_unlock(&mts_io_mutex);
+ }
+
+ if (err) {
+ return err;
+ }
+
+ return count;
+}
+
+static ssize_t mts_attr_store_radio_power(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int value;
+ int ret;
+
+ struct gpio_pin *pin = gpio_pin_by_name("RADIO_RESET");
+
+ if (!pin) {
+ return -ENODEV;
+ }
+
+ if (sscanf(buf, "%i", &value) != 1) {
+ return -EINVAL;
+ }
+
+ if (value == 0) {
+ mutex_lock(&mts_io_mutex);
+ ret = at91_set_gpio_value(pin->pin, 0);
+ mutex_unlock(&mts_io_mutex);
+ } else {
+ mutex_lock(&mts_io_mutex);
+ ret = at91_set_gpio_value(pin->pin, 1);
+ mutex_unlock(&mts_io_mutex);
+ }
+
+ return ret;
+}
+
static int radio_reset_telit(void)
{
int ret;
@@ -1426,6 +1615,9 @@ static ssize_t mts_attr_store_radio_reset_telit(struct device *dev,
return count;
}
+static DEVICE_ATTR_MTS(dev_attr_radio_power, "radio-power",
+ mts_attr_show_gpio_pin, mts_attr_store_radio_power);
+
static DEVICE_ATTR_MTS(dev_attr_radio_reset, "radio-reset",
mts_attr_show_gpio_pin, mts_attr_store_radio_reset);
@@ -2186,6 +2378,9 @@ static DEVICE_ATTR_MTS(dev_attr_serial_mode, "serial-mode",
static DEVICE_ATTR_MTS(dev_attr_eth_switch_enabled, "eth-switch-enabled",
mts_attr_show_gpio_pin, mts_attr_store_gpio_pin);
+static DEVICE_ATTR_MTS(dev_attr_radio_power_telit, "radio-power",
+ mts_attr_show_gpio_pin, mts_attr_store_radio_power_telit);
+
static DEVICE_ATTR_MTS(dev_attr_radio_reset_telit, "radio-reset",
mts_attr_show_gpio_pin, mts_attr_store_radio_reset_telit);
@@ -2267,6 +2462,7 @@ static struct attribute *mtr2_platform_attributes[] = {
&dev_attr_wifi_mac.attr,
&dev_attr_reset.attr,
&dev_attr_reset_monitor.attr,
+ &dev_attr_radio_power.attr,
&dev_attr_radio_reset.attr,
&dev_attr_extserial_dtr.attr,
&dev_attr_extserial_dsr_gpio.attr,
@@ -2381,6 +2577,7 @@ static struct attribute *mtr_platform_attributes[] = {
&dev_attr_wifi_mac.attr,
&dev_attr_reset.attr,
&dev_attr_reset_monitor.attr,
+ &dev_attr_radio_power_telit.attr,
&dev_attr_radio_reset_telit.attr,
&dev_attr_extserial_ri_gpio.attr,
&dev_attr_extserial_dtr.attr,