ttwrplus: implemented PMU interrupts handling

TG-553

openrtx/src/core/threads.c

@@ -40,6 +40,9 @@
 #endif
 #include <voicePrompts.h>
 
+#if defined(PLATFORM_TTWRPLUS)
+#include <pmu.h>
+#endif
 
 /* Mutex for concurrent access to RTX state variable */
 pthread_mutex_t rtx_mutex;
@@ -139,6 +142,10 @@ void *main_thread(void *arg)
     {
         time = getTick();
 
+        #if defined(PLATFORM_TTWRPLUS)
+        pmu_handleIRQ();
+        #endif
+
         // Check if power off is requested
         pthread_mutex_lock(&state_mutex);
         if(platform_pwrButtonStatus() == false)

platform/drivers/keyboard/keyboard_ttwrplus.c

@@ -22,6 +22,7 @@
 #include <interfaces/keyboard.h>
 #include <interfaces/platform.h>
 #include <hwconfig.h>
+#include <pmu.h>
 
 static const struct device *const buttons_dev = DEVICE_DT_GET(DT_NODELABEL(buttons));
 

platform/targets/ttwrplus/pmu.cpp

@@ -17,8 +17,10 @@
  *   along with this program; if not, see <http://www.gnu.org/licenses/>   *
  ***************************************************************************/
 
+#include <zephyr/drivers/gpio.h>
 #include <zephyr/drivers/i2c.h>
 #include <interfaces/delays.h>
+#include <interfaces/keyboard.h>
 #include <hwconfig.h>
 #include "pmu.h"
 
@@ -33,9 +35,12 @@
 #error "Please set the correct I2C device"
 #endif
 
+#define PMU_IRQ_NODE DT_ALIAS(pmu_irq)
 
 static const struct device *const i2c_dev = DEVICE_DT_GET(I2C_DEV_NODE);
+static const struct gpio_dt_spec pmu_irq  = GPIO_DT_SPEC_GET(PMU_IRQ_NODE, gpios);
 static XPowersPMU PMU;
+static bool pwrOnPressed = false;
 
 
 static int pmu_registerReadByte(uint8_t devAddr, uint8_t regAddr, uint8_t *data,
@@ -73,6 +78,18 @@ void pmu_init()
         printk("I2C config failed\n");
     }
 
+    // Configure IRQ gpio
+    if(gpio_is_ready_dt(&pmu_irq) == false)
+    {
+        printk("PMU IRQ gpio is not ready\n");
+    }
+
+    int ret = gpio_pin_configure_dt(&pmu_irq, GPIO_INPUT);
+    if (ret != 0)
+    {
+        printk("Failed to configure PMU IRQ gpio\n");
+    }
+
     bool result = PMU.begin(AXP2101_SLAVE_ADDRESS, pmu_registerReadByte,
                             pmu_registerWriteByte);
     if (result == false)
@@ -249,10 +266,11 @@ void pmu_init()
     PMU.clearIrqStatus();
     // Enable the required interrupt function
     PMU.enableIRQ(
-        XPOWERS_AXP2101_BAT_INSERT_IRQ    | XPOWERS_AXP2101_BAT_REMOVE_IRQ      |   //BATTERY
-        XPOWERS_AXP2101_VBUS_INSERT_IRQ   | XPOWERS_AXP2101_VBUS_REMOVE_IRQ     |   //VBUS
-        XPOWERS_AXP2101_PKEY_SHORT_IRQ    | XPOWERS_AXP2101_PKEY_LONG_IRQ       |   //POWER KEY
-        XPOWERS_AXP2101_BAT_CHG_DONE_IRQ  | XPOWERS_AXP2101_BAT_CHG_START_IRQ       //CHARGE
+        XPOWERS_AXP2101_BAT_INSERT_IRQ    | XPOWERS_AXP2101_BAT_REMOVE_IRQ    |   // BATTERY
+        XPOWERS_AXP2101_VBUS_INSERT_IRQ   | XPOWERS_AXP2101_VBUS_REMOVE_IRQ   |   // VBUS
+        XPOWERS_AXP2101_PKEY_POSITIVE_IRQ | XPOWERS_AXP2101_PKEY_NEGATIVE_IRQ |   // POWER KEY ON/OFF
+        XPOWERS_AXP2101_PKEY_LONG_IRQ     |                                       // POWER KEY LONG PRESS
+        XPOWERS_AXP2101_BAT_CHG_DONE_IRQ  | XPOWERS_AXP2101_BAT_CHG_START_IRQ     // CHARGE
     );
 
     // Set the precharge charging current
@@ -315,3 +333,44 @@ void pmu_setGPSPower(bool enable)
     else
         PMU.disableALDO4();
 }
+
+void pmu_handleIRQ()
+{
+    // Check if we got some interrupts
+    if(gpio_pin_get_dt(&pmu_irq) == 0)
+        return;
+
+    uint32_t irqStatus = PMU.getIrqStatus();
+    PMU.clearIrqStatus();
+
+    // Power on key rising edge
+    if((irqStatus & XPOWERS_AXP2101_PKEY_POSITIVE_IRQ) != 0)
+        pwrOnPressed = true;
+
+    // Power on key falling edge
+    if((irqStatus & XPOWERS_AXP2101_PKEY_NEGATIVE_IRQ) != 0)
+        pwrOnPressed = false;
+
+    // Power key long press
+    if ((irqStatus & XPOWERS_AXP2101_PKEY_LONG_IRQ) != 0)
+    {
+        // TODO Shutdown radio, set platform_pwrButtonStatus to false
+        PMU.shutdown();
+    }
+
+    // Charger start IRQ
+    if((irqStatus & XPOWERS_AXP2101_BAT_CHG_START_IRQ) != 0)
+    {
+        if(PMU.isBatteryConnect())
+            PMU.setChargingLedMode(XPOWERS_CHG_LED_CTRL_CHG);
+    }
+
+    // Battery remove IRQ
+    if((irqStatus & XPOWERS_AXP2101_BAT_REMOVE_IRQ) != 0)
+        PMU.setChargingLedMode(XPOWERS_CHG_LED_BLINK_1HZ);
+}
+
+bool pmu_pwrOnBtnStatus()
+{
+    return pwrOnPressed;
+}

platform/targets/ttwrplus/pmu.h

@@ -28,6 +28,8 @@ void pmu_init();
 uint16_t pmu_getVbat();
 void pmu_setBasebandPower(bool enable);
 void pmu_setGPSPower(bool enable);
+void pmu_handleIRQ();
+bool pmu_pwrOnBtnStatus();
 
 #ifdef __cplusplus
 }

platform/targets/ttwrplus/ttwrplus.dts

@@ -22,6 +22,7 @@
         radio-pwr = &radio_pwr;
         radio-pdn = &radio_pdn;
         radio-ptt = &radio_ptt;
+        pmu-irq   = &pmu_irq;
         qdec0 = &pcnt;
         led0 = &ws2812c;
     };
@@ -51,6 +52,11 @@
                     gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
                     label = "SA868S PTT on IO41";
             };
+
+            pmu_irq: pmu_irq {
+                gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
+                label = "PMU IRQ Pin";
+            };
     };
 
     buttons: buttons {