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authorMykyta Dorokhin <mykyta.dorokhin@globallogic.com>2017-05-23 14:12:28 -0500
committerMykyta Dorokhin <mykyta.dorokhin@globallogic.com>2017-05-24 09:58:27 -0500
commit29d8bf9b50bfc3c43efe89961eed6bf61d62eba7 (patch)
tree8c353433fd2c2d4d53130c9d2c7589b99ed61948
parent066312ffe878c4bee809684eb1fd59366ed73730 (diff)
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mtcap: fix radio power sequence for LNA3 radios
-rw-r--r--io-module/mtcap.c50
-rw-r--r--io-module/mts_io.c13
-rw-r--r--io-module/mts_io.h6
3 files changed, 57 insertions, 12 deletions
diff --git a/io-module/mtcap.c b/io-module/mtcap.c
index c97822a..048a59e 100644
--- a/io-module/mtcap.c
+++ b/io-module/mtcap.c
@@ -160,12 +160,13 @@ static int radio_unconditional_shutdown_mtcap(void)
/* radio control (power/reset) for mtcap */
-static int radio_off_mtcap(void)
+static int radio_off_mtcap(int radio_model)
{
// ref: Telit_LE910_Hardware_User_Guide_r6.pdf (4.3.2 Hardware Shutdown)
struct gpio_pin *pwrmon_pin = gpio_pin_by_attr_name("radio-power-monitor");
struct gpio_pin *onoff_pin = gpio_pin_by_attr_name("radio-power");
struct gpio_pin *rst_pin = gpio_pin_by_attr_name("radio-reset");
+ unsigned int hold_time;
int value;
int i;
@@ -188,8 +189,15 @@ static int radio_off_mtcap(void)
// finalization state can differ according to the situation in which the LE910 is so it
// cannot be fixed definitely. Normally it will be above 15 seconds later from releasing
// ON/OFF# and DTE should monitor the status of PWRMON to see the actual power off.
+ hold_time = 2500;
+ if (radio_model == RADIO_LNA3) {
+
+ // To turn OFF the LE910 V2 the pad ON_OFF* must be tied low for at least 3 seconds and then released.
+ // ref: Telit_LE910_V2_Hardware_User_Guide_r7.pdf
+ hold_time = 3500;
+ }
- reset_gpio_pin(onoff_pin, 2500, 0);
+ reset_gpio_pin(onoff_pin, hold_time, 0);
value = 0;
for (i = 0; i < 15; i++) {
@@ -214,12 +222,13 @@ static int radio_off_mtcap(void)
return 0;
}
-static int radio_on_mtcap(void)
+static int radio_on_mtcap(int radio_model)
{
// ref: Telit_LE910_Hardware_User_Guide_r6.pdf
struct gpio_pin *pwrmon_pin = gpio_pin_by_attr_name("radio-power-monitor");
struct gpio_pin *onoff_pin = gpio_pin_by_attr_name("radio-power");
struct gpio_pin *rst_pin = gpio_pin_by_attr_name("radio-reset");
+ unsigned int hold_time;
int value;
if (!onoff_pin || !pwrmon_pin || !rst_pin) {
@@ -234,13 +243,21 @@ static int radio_on_mtcap(void)
log_info("turning on cell radio");
+ // for LEU1 (ref: Telit_LE910_Hardware_User_Guide_r6.pdf)
+ hold_time = 1500;
+ if (radio_model == RADIO_LNA3) {
+
+ // To turn on the LE910 V2 the pad ON_OFF* must be tied low for at least 5 seconds and then released.
+ // ref: Telit_LE910_V2_Hardware_User_Guide_r7.pdf
+ hold_time = 5500;
+ }
+
// drive on/off pin high for at least 1 seconoff_pin
gpio_set_value(onoff_pin->pin.gpio, 1);
msleep(1000);
- // 1) drive on/off pin low for < 2 sec
- // 2) drive on/off pin high
- reset_gpio_pin(onoff_pin, 1500, 0);
+ // ON_OFF must be tied low and then released
+ reset_gpio_pin(onoff_pin, hold_time, 0);
// check that power is high
value = gpio_get_value(pwrmon_pin->pin.gpio);
@@ -253,11 +270,12 @@ static int radio_on_mtcap(void)
return 0;
}
-static int radio_reset_mtcap(void)
+static int radio_reset_mtcap(int radio_model)
{
// ref: Telit_LE910_Hardware_User_Guide_r6.pdf
struct gpio_pin *rst_pin = gpio_pin_by_attr_name("radio-reset");
struct gpio_pin *onoff_pin = gpio_pin_by_attr_name("radio-power");
+ unsigned int hold_time;
if (!rst_pin || !onoff_pin) {
return -ENODEV;
@@ -276,6 +294,14 @@ static int radio_reset_mtcap(void)
//
log_info("turning on cell radio");
+ // for LEU1 (ref: Telit_LE910_Hardware_User_Guide_r6.pdf)
+ hold_time = 1500;
+ if (radio_model == RADIO_LNA3) {
+ // To turn on the LE910 V2 the pad ON_OFF* must be tied low for at least 5 seconds and then released.
+ // ref: Telit_LE910_V2_Hardware_User_Guide_r7.pdf
+ hold_time = 5500;
+ }
+
// drive on/off pin high for at least 1 sec
gpio_set_value(onoff_pin->pin.gpio, 1);
msleep(1000);
@@ -283,7 +309,7 @@ static int radio_reset_mtcap(void)
// drive on/off pin low for < 2 sec
// drive on/off pin high
- reset_gpio_pin(onoff_pin, 1500, 0);
+ reset_gpio_pin(onoff_pin, hold_time, 0);
return 0;
}
@@ -293,6 +319,7 @@ static ssize_t mts_attr_store_radio_power_mtcap(struct device *dev,
{
int value;
int err;
+ int radio_model = get_radio_model_from_product_id();
if (sscanf(buf, "%i", &value) != 1) {
return -EINVAL;
@@ -300,9 +327,9 @@ static ssize_t mts_attr_store_radio_power_mtcap(struct device *dev,
mutex_lock(&mts_io_mutex);
if (value == 0) {
- err = radio_off_mtcap();
+ err = radio_off_mtcap(radio_model);
} else {
- err = radio_on_mtcap();
+ err = radio_on_mtcap(radio_model);
}
mutex_unlock(&mts_io_mutex);
@@ -318,6 +345,7 @@ static ssize_t mts_attr_store_radio_reset_mtcap(struct device *dev,
{
int value;
int err;
+ int radio_model = get_radio_model_from_product_id();
if (sscanf(buf, "%i", &value) != 1) {
return -EINVAL;
@@ -351,7 +379,7 @@ static ssize_t mts_attr_store_radio_reset_mtcap(struct device *dev,
mutex_lock(&mts_io_mutex);
- err = radio_reset_mtcap();
+ err = radio_reset_mtcap(radio_model);
mutex_unlock(&mts_io_mutex);
diff --git a/io-module/mts_io.c b/io-module/mts_io.c
index 1217250..f47e2ea 100644
--- a/io-module/mts_io.c
+++ b/io-module/mts_io.c
@@ -47,7 +47,7 @@
#include "mts_io.h"
-#define DRIVER_VERSION "v1.5.11"
+#define DRIVER_VERSION "v1.5.12"
#define DRIVER_AUTHOR "James Maki <jmaki@multitech.com>"
#define DRIVER_DESC "MTS-IO Controller"
#define DRIVER_NAME "mts-io"
@@ -642,6 +642,17 @@ static DEVICE_ATTR_RO_MTS(dev_attr_imei, "imei",
static DEVICE_ATTR_RO_MTS(dev_attr_eth_mac, "mac-eth",
mts_attr_show_product_info);
+static int get_radio_model_from_product_id() {
+ int rc = RADIO_UNKNOWN;
+
+ if (strstr(id_eeprom.product_id, "LEU1")) rc = RADIO_LEU1;
+ else if (strstr(id_eeprom.product_id, "LNA3")) rc = RADIO_LNA3;
+
+ // Add other radios as needed.
+ return rc;
+}
+
+
/* include on-board lora peripheral */
#include "mts_lora.c"
diff --git a/io-module/mts_io.h b/io-module/mts_io.h
index 05111c7..99bfcbb 100644
--- a/io-module/mts_io.h
+++ b/io-module/mts_io.h
@@ -108,6 +108,12 @@ enum {
LED_FLASHING,
};
+enum {
+ RADIO_UNKNOWN,
+ RADIO_LEU1,
+ RADIO_LNA3,
+};
+
enum ap {
port_1 = 1,
port_2,