Tab5 power expander driver and devicetree parsing improvements (#507)

* **New Features**
  * PI4IOE5V6408 I2C I/O expander driver with public GPIO APIs
  * CLI tool to list devicetree dependencies

* **Device Tree Updates**
  * M5Stack Tab5 configured with two I2C IO expanders; PI4IOE5V6408 binding added

* **Build / Tooling**
  * Devicetree code generation integrated into build; generated artifacts and dynamic dependency resolution exposed

* **Refactor**
  * Kernel/run APIs updated to accept a null‑terminated devicetree modules array; many module symbols renamed

* **Documentation**
  * Added README and Apache‑2.0 license for new driver module

Devices/btt-panda-touch/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module btt_panda_touch_module = {
     .name = "btt-panda-touch",
     .start = start,
     .stop = stop,

Devices/cyd-2432s024c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_2432s024c_module = {
     .name = "cyd-2432s024c",
     .start = start,
     .stop = stop,

Devices/cyd-2432s028r/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_2432s028r_module = {
     .name = "cyd-2432s028r",
     .start = start,
     .stop = stop,

Devices/cyd-2432s028rv3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_2432s028rv3_module = {
     .name = "cyd-2432s028rv3",
     .start = start,
     .stop = stop,

Devices/cyd-2432s032c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_2432s032c_module = {
     .name = "cyd-2432s032c",
     .start = start,
     .stop = stop,

Devices/cyd-4848s040c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_4848s040c_module = {
     .name = "cyd-4848s040c",
     .start = start,
     .stop = stop,

Devices/cyd-8048s043c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_8048s043c_module = {
     .name = "cyd-8048s043c",
     .start = start,
     .stop = stop,

Devices/cyd-e32r28t/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_e32r28t_module = {
     .name = "cyd-e32r28t",
     .start = start,
     .stop = stop,

Devices/cyd-e32r32p/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module cyd_e32r32p_module = {
     .name = "cyd-e32r32p",
     .start = start,
     .stop = stop,

Devices/elecrow-crowpanel-advance-28/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module elecrow_crowpanel_advance_28_module = {
     .name = "elecrow-crowpanel-advance-28",
     .start = start,
     .stop = stop,

Devices/elecrow-crowpanel-advance-35/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module elecrow_crowpanel_advance_35_module = {
     .name = "elecrow-crowpanel-advance-35",
     .start = start,
     .stop = stop,

Devices/elecrow-crowpanel-advance-50/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module elecrow_crowpanel_advance_50_module = {
     .name = "elecrow-crowpanel-advance-50",
     .start = start,
     .stop = stop,

Devices/elecrow-crowpanel-basic-28/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module elecrow_crowpanel_basic_28_module = {
     .name = "elecrow-crowpanel-basic-28",
     .start = start,
     .stop = stop,

Devices/elecrow-crowpanel-basic-35/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module elecrow_crowpanel_basic_35_module = {
     .name = "elecrow-crowpanel-basic-35",
     .start = start,
     .stop = stop,

Devices/elecrow-crowpanel-basic-50/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module elecrow_crowpanel_basic_50_module = {
     .name = "elecrow-crowpanel-basic-50",
     .start = start,
     .stop = stop,

Devices/generic-esp32/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module generic_esp32_module = {
     .name = "generic-esp32",
     .start = start,
     .stop = stop,

Devices/generic-esp32c6/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module generic_esp32c6_module = {
     .name = "generic-esp32c6",
     .start = start,
     .stop = stop,

Devices/generic-esp32p4/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module generic_esp32p4_module = {
     .name = "generic-esp32p4",
     .start = start,
     .stop = stop,

Devices/generic-esp32s3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module generic_esp32s3_module = {
     .name = "generic-esp32s3",
     .start = start,
     .stop = stop,

Devices/guition-jc1060p470ciwy/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module guition_jc1060p470ciwy_module = {
     .name = "guition-jc1060p470ciwy",
     .start = start,
     .stop = stop,

Devices/guition-jc2432w328c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module guition_jc2432w328c_module = {
     .name = "guition-jc2432w328c",
     .start = start,
     .stop = stop,

Devices/guition-jc3248w535c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module guition_jc3248w535c_module = {
     .name = "guition-jc3248w535c",
     .start = start,
     .stop = stop,

Devices/guition-jc8048w550c/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module guition_jc8048w550c_module = {
     .name = "guition-jc8048w550c",
     .start = start,
     .stop = stop,

Devices/heltec-wifi-lora-32-v3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module heltec_wifi_lora_32_v3_module = {
     .name = "heltec-wifi-lora-32-v3",
     .start = start,
     .stop = stop,

Devices/lilygo-tdeck/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module lilygo_tdeck_module = {
     .name = "lilygo-tdeck",
     .start = start,
     .stop = stop,

Devices/lilygo-tdisplay-s3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module lilygo_tdisplay_s3_module = {
     .name = "lilygo-tdisplay-s3",
     .start = start,
     .stop = stop,

Devices/lilygo-tdisplay/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module lilygo_tdisplay_module = {
     .name = "lilygo-tdisplay",
     .start = start,
     .stop = stop,

Devices/lilygo-tdongle-s3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module lilygo_tdongle_s3_module = {
     .name = "lilygo-tdongle-s3",
     .start = start,
     .stop = stop,

Devices/lilygo-tlora-pager/Source/module.cpp

@@ -20,8 +20,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module lilygo_tlora_pager_module = {
     .name = "lilygo-tlora-pager",
     .start = start,
     .stop = stop,

Devices/m5stack-cardputer-adv/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_cardputer_adv_module = {
     .name = "m5stack-cardputer-adv",
     .start = start,
     .stop = stop,

Devices/m5stack-cardputer/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_cardputer_module = {
     .name = "m5stack-cardputer",
     .start = start,
     .stop = stop,

Devices/m5stack-core2/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_core2_module = {
     .name = "m5stack-core2",
     .start = start,
     .stop = stop,

Devices/m5stack-cores3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_cores3_module = {
     .name = "m5stack-cores3",
     .start = start,
     .stop = stop,

Devices/m5stack-papers3/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_papers3_module = {
     .name = "m5stack-papers3",
     .start = start,
     .stop = stop,

Devices/m5stack-stickc-plus/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_stickc_plus_module = {
     .name = "m5stack-stickc-plus",
     .start = start,
     .stop = stop,

Devices/m5stack-stickc-plus2/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module m5stack_stickc_plus2_module = {
     .name = "m5stack-stickc-plus2",
     .start = start,
     .stop = stop,

Devices/m5stack-tab5/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "Source"
-    REQUIRES Tactility esp_lvgl_port esp_lcd EspLcdCompat esp_lcd_ili9881c GT911 PwmBacklight driver vfs fatfs
+    REQUIRES Tactility esp_lvgl_port esp_lcd EspLcdCompat esp_lcd_ili9881c GT911 PwmBacklight driver vfs fatfs pi4ioe5v6408-module
 )

Devices/m5stack-tab5/Source/Configuration.cpp

@@ -6,6 +6,7 @@
 
 #include <Tactility/hal/Configuration.h>
 #include <Tactility/hal/i2c/I2c.h>
+#include <drivers/pi4ioe5v6408.h>
 
 using namespace tt::hal;
 
@@ -18,9 +19,11 @@ static DeviceVector createDevices() {
     };
 }
 
-static error_t initPower(::Device* i2c_controller) {
+static error_t initPower(::Device* io_expander0, ::Device* io_expander1) {
+    constexpr TickType_t i2c_timeout = pdMS_TO_TICKS(10);
+
     /*
-     PI4IOE5V6408-1 (0x43)
+     PI4IOE5V6408-0 (0x43)
      - Bit 0: RF internal/external switch
      - Bit 1: Speaker enable
      - Bit 2: External 5V bus enable
@@ -29,8 +32,18 @@ static error_t initPower(::Device* i2c_controller) {
      - Bit 5: Touch reset
      - Bit 6: Camera reset
      - Bit 7: Headphone detect
+     */
 
-     PI4IOE5V6408-2 (0x44)
+    check(pi4ioe5v6408_set_direction(io_expander0, 0b01111111, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_output_level(io_expander0, 0b01000110, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_output_high_impedance(io_expander0, 0b00000000, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_pull_select(io_expander0, 0b01111111, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_pull_enable(io_expander0, 0b01111111, i2c_timeout) == ERROR_NONE);
+    vTaskDelay(pdMS_TO_TICKS(10));
+    check(pi4ioe5v6408_set_output_level(io_expander0, 0b01110110, i2c_timeout) == ERROR_NONE);
+
+    /*
+     PI4IOE5V6408-1 (0x44)
      - Bit 0: C6 WLAN enable
      - Bit 1: /
      - Bit 2: /
@@ -41,57 +54,18 @@ static error_t initPower(::Device* i2c_controller) {
      - Bit 7: IP2326: CHG_EN
     */
 
-    // Init byte arrays adapted from https://github.com/m5stack/M5GFX/blob/03565ccc96cb0b73c8b157f5ec3fbde439b034ad/src/M5GFX.cpp
-    static constexpr uint8_t reg_data_io1_1[] = {
-        0x03, 0b01111111,   // PI4IO_REG_IO_DIR
-        0x05, 0b01000110,   // PI4IO_REG_OUT_SET (bit4=LCD Reset, bit5=GT911 TouchReset -> LOW)
-        0x07, 0b00000000,   // PI4IO_REG_OUT_H_IM
-        0x0D, 0b01111111,   // PI4IO_REG_PULL_SEL
-        0x0B, 0b01111111,   // PI4IO_REG_PULL_EN
-    };
-
-    static constexpr uint8_t reg_data_io1_2[] = {
-        0x05, 0b01110110,   // PI4IO_REG_OUT_SET (bit4=LCD Reset, bit5=GT911 TouchReset -> HIGH)
-    };
-
-    static constexpr uint8_t reg_data_io2[] = {
-        0x03, 0b10111001,   // PI4IO_REG_IO_DIR
-        0x07, 0b00000110,   // PI4IO_REG_OUT_H_IM
-        0x0D, 0b10111001,   // PI4IO_REG_PULL_SEL
-        0x0B, 0b11111001,   // PI4IO_REG_PULL_EN
-        0x09, 0b01000000,   // PI4IO_REG_IN_DEF_STA
-        0x11, 0b10111111,   // PI4IO_REG_INT_MASK
-        0x05, 0b10001001,   // PI4IO_REG_OUT_SET (enable WiFi, USB-A 5V and CHG_EN)
-    };
-
-    constexpr auto IO_EXPANDER1_ADDRESS = 0x43;
-    auto error = i2c_controller_write_register_array(i2c_controller, IO_EXPANDER1_ADDRESS, reg_data_io1_1, sizeof(reg_data_io1_1), pdMS_TO_TICKS(100));
-    if (error != ERROR_NONE) {
-        LOG_E(TAG, "IO expander 1 init failed in phase 1");
-        return ERROR_UNDEFINED;
-    }
-
-    constexpr auto IO_EXPANDER2_ADDRESS = 0x44;
-    error = i2c_controller_write_register_array(i2c_controller, IO_EXPANDER2_ADDRESS, reg_data_io2, sizeof(reg_data_io2), pdMS_TO_TICKS(100));
-    if (error != ERROR_NONE) {
-        LOG_E(TAG, "IO expander 2 init failed");
-        return ERROR_UNDEFINED;
-    }
-
-    // The M5Stack code applies this, but it's not known why
-    // TODO: Remove and test it extensively
-    tt::kernel::delayTicks(10);
-
-    error = i2c_controller_write_register_array(i2c_controller, IO_EXPANDER1_ADDRESS, reg_data_io1_2, sizeof(reg_data_io1_2), pdMS_TO_TICKS(100));
-    if (error != ERROR_NONE) {
-        LOG_E(TAG, "IO expander 1 init failed in phase 2");
-        return ERROR_UNDEFINED;
-    }
+    check(pi4ioe5v6408_set_direction(io_expander1, 0b10111001, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_output_high_impedance(io_expander1, 0b00000110, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_pull_select(io_expander1, 0b10111001, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_pull_enable(io_expander1, 0b11111001, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_input_default_level(io_expander1, 0b01000000, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_interrupt_mask(io_expander1, 0b10111111, i2c_timeout) == ERROR_NONE);
+    check(pi4ioe5v6408_set_output_level(io_expander1, 0b10001001, i2c_timeout) == ERROR_NONE);
 
     return ERROR_NONE;
 }
 
-static error_t initSound(::Device* i2c_controller) {
+static error_t initSound(::Device* i2c_controller, ::Device* io_expander0 = nullptr) {
     // Init data from M5Unified:
     // https://github.com/m5stack/M5Unified/blob/master/src/M5Unified.cpp
     static constexpr uint8_t ES8388_I2C_ADDR = 0x10;
@@ -139,13 +113,15 @@ static error_t initSound(::Device* i2c_controller) {
         return error;
     }
 
-    constexpr auto IO_EXPANDER1_ADDRESS = 0x43;
-    constexpr auto AMP_REGISTER = 0x05;
-    // Note: to disable the amplifier, reset the bits
-    error = i2c_controller_register8_set_bits(i2c_controller, IO_EXPANDER1_ADDRESS, AMP_REGISTER, 0b00000010, pdMS_TO_TICKS(100));
-    if (error != ERROR_NONE) {
+    uint8_t output_level = 0;
+    if (pi4ioe5v6408_get_output_level(io_expander0, &output_level, pdMS_TO_TICKS(100)) != ERROR_NONE) {
+        LOG_E(TAG, "Failed to read power level: %s", error_to_string(error));
+        return ERROR_RESOURCE;
+    }
+
+    if (pi4ioe5v6408_set_output_level(io_expander0, output_level | 0b00000010, pdMS_TO_TICKS(100)) != ERROR_NONE) {
         LOG_E(TAG, "Failed to enable amplifier: %s", error_to_string(error));
-        return error;
+        return ERROR_RESOURCE;
     }
 
     return ERROR_NONE;
@@ -155,12 +131,13 @@ static bool initBoot() {
     auto* i2c0 = device_find_by_name("i2c0");
     check(i2c0, "i2c0 not found");
 
-    auto error = initPower(i2c0);
-    if (error != ERROR_NONE) {
-        return false;
-    }
+    auto* io_expander0 = device_find_by_name("io_expander0");
+    auto* io_expander1 = device_find_by_name("io_expander1");
+    check(i2c0, "i2c0 not found");
 
-    error = initSound(i2c0);
+    initPower(io_expander0, io_expander1);
+
+    error_t error = initSound(i2c0, io_expander0);
     if (error != ERROR_NONE) {
         LOG_E(TAG, "Failed to enable ES8388");
     }

Devices/m5stack-tab5/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+Module m5stack_tab5_module = {
     .name = "m5stack-tab5",
     .start = start,
     .stop = stop,

Devices/m5stack-tab5/devicetree.yaml

@@ -1,3 +1,4 @@
 dependencies:
   - Platforms/platform-esp32
+  - Drivers/pi4ioe5v6408-module
 dts: m5stack,tab5.dts

Devices/m5stack-tab5/m5stack,tab5.dts

@@ -5,6 +5,7 @@
 #include <tactility/bindings/esp32_i2c.h>
 #include <tactility/bindings/esp32_i2s.h>
 #include <tactility/bindings/esp32_spi.h>
+#include <bindings/pi4ioe5v6408.h>
 
 / {
 	compatible = "root";
@@ -21,6 +22,36 @@
 		clock-frequency = <400000>;
 		pin-sda = <&gpio0 31 GPIO_FLAG_NONE>;
 		pin-scl = <&gpio0 32 GPIO_FLAG_NONE>;
+
+		/*
+		 - Bit 0: RF internal/external switch
+		 - Bit 1: Speaker enable
+		 - Bit 2: External 5V bus enable
+		 - Bit 3: /
+		 - Bit 4: LCD reset
+		 - Bit 5: Touch reset
+		 - Bit 6: Camera reset
+		 - Bit 7: Headphone detect
+		 */
+		io_expander0 {
+			compatible = "diodes,pi4ioe5v6408";
+			reg = <0x43>;
+		};
+
+		/*
+		 - Bit 0: C6 WLAN enable
+		 - Bit 1: /
+		 - Bit 2: /
+		 - Bit 3: USB-A 5V enable
+		 - Bit 4: Device power: PWROFF_PLUSE
+		 - Bit 5: IP2326: nCHG_QC_EN
+		 - Bit 6: IP2326: CHG_STAT_LED
+		 - Bit 7: IP2326: CHG_EN
+		*/
+		io_expander1 {
+			compatible = "diodes,pi4ioe5v6408";
+			reg = <0x44>;
+		};
 	};
 
 	i2c_port_a: i2c1 {

Devices/simulator/CMakeLists.txt

@@ -5,20 +5,20 @@ if (NOT DEFINED ENV{ESP_IDF_VERSION})
     file(GLOB_RECURSE SOURCES "Source/*.c*")
     file(GLOB_RECURSE HEADERS "Source/*.h*")
 
-    add_library(Simulator OBJECT)
+    add_library(simulator OBJECT)
 
-    target_sources(Simulator
+    target_sources(simulator
         PRIVATE ${SOURCES}
         PUBLIC ${HEADERS}
     )
 
-    target_link_libraries(Simulator
+    target_link_libraries(simulator
         PRIVATE Tactility
         PRIVATE TactilityCore
         PRIVATE lvgl
         PRIVATE SDL2-static
     )
 
-    target_link_libraries(Simulator PRIVATE ${SDL2_LIBRARIES})
+    target_link_libraries(simulator PRIVATE ${SDL2_LIBRARIES})
 
 endif()

Devices/simulator/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module simulator_module = {
     .name = "simulator",
     .start = start,
     .stop = stop,

Devices/unphone/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module unphone_module = {
     .name = "unphone",
     .start = start,
     .stop = stop,

Devices/waveshare-esp32-s3-geek/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module waveshare_esp32_s3_geek_module = {
     .name = "waveshare-esp32-s3-geek",
     .start = start,
     .stop = stop,

Devices/waveshare-s3-lcd-13/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module waveshare_s3_lcd_13_module = {
     .name = "waveshare-s3-lcd-13",
     .start = start,
     .stop = stop,

Devices/waveshare-s3-touch-lcd-128/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module waveshare_s3_touch_lcd_128_module = {
     .name = "waveshare-s3-touch-lcd-128",
     .start = start,
     .stop = stop,

Devices/waveshare-s3-touch-lcd-147/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module waveshare_s3_touch_lcd_147_module = {
     .name = "waveshare-s3-touch-lcd-147",
     .start = start,
     .stop = stop,

Devices/waveshare-s3-touch-lcd-43/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module waveshare_s3_touch_lcd_43_module = {
     .name = "waveshare-s3-touch-lcd-43",
     .start = start,
     .stop = stop,

Devices/wireless-tag-wt32-sc01-plus/Source/module.cpp

@@ -12,8 +12,7 @@ static error_t stop() {
     return ERROR_NONE;
 }
 
-/** @warning The variable name must be exactly "device_module" */
-struct Module device_module = {
+struct Module wireless_tag_wt32_sc01_plus_module = {
     .name = "wireless-tag-wt32-sc01-plus",
     .start = start,
     .stop = stop,