Device migrations, drivers and fixes (#571)

Device migrations: - cyd-4848S040c - guition-jc1060p470ciwy - guition-jc2432w328c - guition-jc3248w535c (known issue with display and touch, Shadowtrance will look into it) - guition-jc8048w550c - heltec-wifi-lora-32-v3 - lilygo-tdeck-max (excluding graphics) - lilygo-tdisplay - lilygo-tdisplay-s3 - lilygo-tdongle-s3 - lilygo-tlora-pager Driver migrations: - Implemented haptic driver interface in kernel - AXS15231b - BQ25896 - BQ27220 - CST328 - CST6xx - DRV2605 - JD9165 - Custom LilyGO driver for T-Lora Pager - SSD1306 - ST7701 - ST7735 - SY6970 - TCA8418 Fixes/improvements: - Boot app: support for multiple power devices, improved UI - lvgl_devices and related code: fixes for mapping - Support for arrays in dts parser
2026-07-18 15:01:42 +02:00
parent 3b5a401594
commit d896657bf9
290 changed files with 9113 additions and 6719 deletions
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.20)
+
+include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
+
+file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
+
+tactility_add_module(axs15231b-module
+    SRCS ${SOURCE_FILES}
+    INCLUDE_DIRS include/
+    REQUIRES TactilityKernel platform-esp32 esp_lcd_axs15231b driver
+)
@@ -0,0 +1,195 @@
+Apache License
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+
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+
@@ -0,0 +1,45 @@
+description: AXS15231B touch controller (I2C side of the combined display+touch chip)
+
+include: ["i2c-device.yaml"]
+
+compatible: "axs,axs15231b-touch"
+
+bus: i2c
+
+properties:
+  x-max:
+    type: int
+    required: true
+    description: Maximum X coordinate reported by the controller (typically the panel's horizontal resolution)
+  y-max:
+    type: int
+    required: true
+    description: Maximum Y coordinate reported by the controller (typically the panel's vertical resolution)
+  swap-xy:
+    type: boolean
+    default: false
+    description: Swap the X and Y axes
+  mirror-x:
+    type: boolean
+    default: false
+    description: Mirror the X axis
+  mirror-y:
+    type: boolean
+    default: false
+    description: Mirror the Y axis
+  pin-reset:
+    type: phandles
+    default: GPIO_PIN_SPEC_NONE
+    description: Reset GPIO pin
+  pin-interrupt:
+    type: phandles
+    default: GPIO_PIN_SPEC_NONE
+    description: Interrupt GPIO pin
+  reset-active-high:
+    type: boolean
+    default: false
+    description: Whether the reset pin is active high
+  interrupt-active-high:
+    type: boolean
+    default: false
+    description: Whether the interrupt pin is active high
@@ -0,0 +1,75 @@
+description: >
+  AXS15231B display panel (QSPI interface). Combined display+touch controller chip - see
+  axs,axs15231b-touch for the touch side, which sits on a separate I2C bus and is modeled as an
+  independent devicetree node.
+
+compatible: "axs,axs15231b"
+
+bus: spi
+
+properties:
+  horizontal-resolution:
+    type: int
+    required: true
+    description: Horizontal resolution in pixels
+  vertical-resolution:
+    type: int
+    required: true
+    description: Vertical resolution in pixels
+  mirror-x:
+    type: boolean
+    default: false
+    description: Mirror the X axis
+  mirror-y:
+    type: boolean
+    default: false
+    description: Mirror the Y axis
+  invert-color:
+    type: boolean
+    default: false
+    description: Invert the panel's color output
+  bgr-order:
+    type: boolean
+    default: false
+    description: Use BGR element order instead of RGB
+  pixel-clock-hz:
+    type: int
+    default: 40000000
+    description: QSPI pixel clock frequency in Hz
+  transaction-queue-depth:
+    type: int
+    default: 10
+    description: Size of the internal SPI transaction queue
+  pin-reset:
+    type: phandles
+    default: GPIO_PIN_SPEC_NONE
+    description: Reset GPIO pin
+  reset-active-high:
+    type: boolean
+    default: false
+    description: Whether the reset pin is active high
+  pin-te:
+    type: phandles
+    default: GPIO_PIN_SPEC_NONE
+    description: Optional Tearing-Effect GPIO pin. When set, draw_bitmap waits (best-effort, up
+      to 20ms) for a V-blank pulse on this pin before starting each transfer, to reduce visible
+      tearing. Omit to skip TE sync entirely.
+  init-sequence:
+    type: array
+    element-type: uint8_t
+    description: >
+      Custom vendor bring-up sequence, flattened into bytes as a run of
+      [cmd, data-length, delay-ms, data-length bytes of data...] entries. Omit to use the
+      AXS15231B component's own built-in default sequence.
+  requires-full-frame:
+    type: boolean
+    default: false
+    description: >
+      Whether this panel needs full-frame-only draws (DISPLAY_CAPABILITY_REQUIRES_FULL_FRAME) -
+      a sub-region draw_bitmap() call desyncs this chip's row auto-increment counter, since its
+      QSPI command set has no row-address command.
+      It's not certain that this is required for all driver implementations, so it's a config option for now.
+  backlight:
+    type: phandle
+    default: "NULL"
+    description: Optional reference to this display's backlight device
@@ -0,0 +1,3 @@
+dependencies:
+  - TactilityKernel
+bindings: bindings
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/module.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern struct Module axs15231b_module;
+
+#ifdef __cplusplus
+}
+#endif
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/bindings/bindings.h>
+#include <drivers/axs15231b_display.h>
+
+// The devicetree compiler derives the expected config typedef name from the compatible
+// string's suffix (e.g. "axs,axs15231b" -> axs15231b_config_dt), not from the node name or
+// driver name, so the tag here must match that exactly.
+DEFINE_DEVICETREE(axs15231b, struct Axs15231bDisplayConfig)
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/bindings/bindings.h>
+#include <drivers/axs15231b_touch.h>
+
+// The devicetree compiler derives the expected config typedef name from the compatible
+// string's suffix (e.g. "axs,axs15231b-touch" -> axs15231b_touch_config_dt), not from the node
+// name or driver name, so the tag here must match that exactly.
+DEFINE_DEVICETREE(axs15231b_touch, struct Axs15231bTouchConfig)
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <tactility/device.h>
+#include <tactility/drivers/gpio.h>
+
+struct Axs15231bDisplayConfig {
+    uint16_t horizontal_resolution;
+    uint16_t vertical_resolution;
+    bool mirror_x;
+    bool mirror_y;
+    bool invert_color;
+    bool bgr_order;
+    uint32_t pixel_clock_hz;
+    uint32_t transaction_queue_depth;
+
+    // Reset pin. GPIO_PIN_SPEC_NONE means no reset line is wired up (matches the original
+    // deprecated-HAL config for the boards using this chip so far).
+    struct GpioPinSpec pin_reset;
+    bool reset_active_high;
+
+    // Optional Tearing-Effect GPIO pin. When set (not GPIO_PIN_SPEC_NONE), draw_bitmap() waits
+    // (best-effort, up to 20ms) for a V-blank pulse on this pin before starting each transfer, to
+    // reduce visible tearing. GPIO_PIN_SPEC_NONE skips TE sync entirely.
+    struct GpioPinSpec pin_te;
+
+    // Custom vendor init sequence, flattened as bytes: a run of
+    // [cmd, data_len, delay_ms, data_len bytes of data...] entries. NULL/0 falls back to the
+    // AXS15231B component's own built-in default sequence.
+    const uint8_t* init_sequence;
+    uint32_t init_sequence_length;
+
+    bool requires_full_frame;
+
+    // Optional reference to this display's backlight device, NULL if none.
+    struct Device* backlight;
+};
+
+#ifdef __cplusplus
+}
+#endif
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <tactility/device.h>
+#include <tactility/drivers/gpio.h>
+
+struct Axs15231bTouchConfig {
+    // Devicetree address hint. Unused by the driver: the AXS15231B always sits at a fixed
+    // I2C address (see ESP_LCD_TOUCH_IO_I2C_AXS15231B_ADDRESS in esp_lcd_axs15231b.h).
+    uint8_t address;
+    uint16_t x_max;
+    uint16_t y_max;
+    bool swap_xy;
+    bool mirror_x;
+    bool mirror_y;
+    struct GpioPinSpec pin_reset;
+    struct GpioPinSpec pin_interrupt;
+    bool reset_active_high;
+    bool interrupt_active_high;
+};
+
+#ifdef __cplusplus
+}
+#endif
@@ -0,0 +1,501 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <drivers/axs15231b_display.h>
+#include <axs15231b_module.h>
+
+#include <tactility/check.h>
+#include <tactility/device.h>
+#include <tactility/driver.h>
+#include <tactility/drivers/display.h>
+#include <tactility/drivers/esp32_spi.h>
+#include <tactility/drivers/spi_controller.h>
+#include <tactility/error.h>
+#include <tactility/log.h>
+
+#include <esp_err.h>
+#include <esp_lcd_axs15231b.h>
+#include <esp_lcd_io_spi.h>
+#include <esp_lcd_panel_io.h>
+#include <esp_lcd_panel_ops.h>
+
+#include <driver/gpio.h>
+#include <freertos/semphr.h>
+
+#include <cstdlib>
+
+#define TAG "AXS15231B"
+#define GET_CONFIG(device) (static_cast<const Axs15231bDisplayConfig*>((device)->config))
+
+struct Axs15231bDisplayInternal {
+    esp_lcd_panel_io_handle_t io_handle;
+    esp_lcd_panel_handle_t panel_handle;
+    // Given from ISR context by on_color_trans_done() once a queued transfer physically
+    // completes. draw_bitmap() blocks on this so it can honor DisplayApi's synchronous contract
+    // (see lvgl_display.c: the caller reuses/overwrites the color buffer as soon as draw_bitmap
+    // returns) - esp_lcd_panel_draw_bitmap() itself only queues the transfer and returns early.
+    SemaphoreHandle_t draw_done_semaphore;
+    // Non-null only when a TE (Tearing-Effect) pin is configured. Signaled by te_isr_handler()
+    // on each rising edge, so draw_bitmap() can wait for the next V-blank before transferring.
+    SemaphoreHandle_t te_semaphore;
+    bool te_isr_installed;
+    // Whether we're the one who called gpio_install_isr_service() - if so, we must be the one to
+    // uninstall it, but only if no other pin on the system is still relying on it.
+    bool te_isr_service_installed_by_us;
+    axs15231b_lcd_init_cmd_t* parsed_init_cmds;
+};
+
+static bool IRAM_ATTR on_color_trans_done(esp_lcd_panel_io_handle_t, esp_lcd_panel_io_event_data_t*, void* user_ctx) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(user_ctx);
+    BaseType_t high_task_woken = pdFALSE;
+    xSemaphoreGiveFromISR(internal->draw_done_semaphore, &high_task_woken);
+    return high_task_woken == pdTRUE;
+}
+
+static void IRAM_ATTR te_isr_handler(void* arg) {
+    auto* semaphore = static_cast<SemaphoreHandle_t>(arg);
+    BaseType_t high_task_woken = pdFALSE;
+    xSemaphoreGiveFromISR(semaphore, &high_task_woken);
+    if (high_task_woken == pdTRUE) {
+        portYIELD_FROM_ISR();
+    }
+}
+
+static int pin_or_unused(const struct GpioPinSpec& pin) {
+    return pin.gpio_controller == nullptr ? -1 : static_cast<int>(pin.pin);
+}
+
+static gpio_num_t pin_or_nc(const struct GpioPinSpec& pin) {
+    return pin.gpio_controller == nullptr ? GPIO_NUM_NC : static_cast<gpio_num_t>(pin.pin);
+}
+
+// Unpacks the devicetree's flat [cmd, data_len, delay_ms, data_len bytes...] encoding (produced
+// by the devicetree compiler's "array" property type - see init-sequence in
+// bindings/axs,axs15231b.yaml) into a heap-allocated axs15231b_lcd_init_cmd_t array.
+static bool parse_init_sequence(const uint8_t* bytes, uint32_t length, axs15231b_lcd_init_cmd_t** out_cmds, uint16_t* out_count) {
+    uint32_t count = 0;
+    for (uint32_t offset = 0; offset < length; count++) {
+        if (offset + 3 > length) {
+            LOG_E(TAG, "init-sequence truncated: entry header runs past the end of the array");
+            return false;
+        }
+        offset += 3 + bytes[offset + 1];
+        if (offset > length) {
+            LOG_E(TAG, "init-sequence truncated: entry data runs past the end of the array");
+            return false;
+        }
+    }
+
+    auto* cmds = static_cast<axs15231b_lcd_init_cmd_t*>(malloc(count * sizeof(axs15231b_lcd_init_cmd_t)));
+    if (cmds == nullptr) {
+        return false;
+    }
+
+    uint32_t offset = 0;
+    for (uint32_t i = 0; i < count; i++) {
+        uint8_t data_len = bytes[offset + 1];
+        cmds[i] = {
+            .cmd = bytes[offset],
+            .data = data_len > 0 ? &bytes[offset + 3] : nullptr,
+            .data_bytes = data_len,
+            .delay_ms = bytes[offset + 2],
+        };
+        offset += 3 + data_len;
+    }
+
+    *out_cmds = cmds;
+    *out_count = (uint16_t)count;
+    return true;
+}
+
+// region Driver lifecycle
+
+// Best-effort: a TE pin is a hardware refinement, not a requirement, so failures here are logged
+// and left for the caller to treat as non-fatal (matches the original deprecated-HAL driver,
+// which continued without TE sync if setup failed).
+static bool setup_te_sync(Axs15231bDisplayInternal* internal, gpio_num_t te_pin) {
+    if (te_pin == GPIO_NUM_NC) {
+        return true;
+    }
+
+    internal->te_semaphore = xSemaphoreCreateBinary();
+    if (internal->te_semaphore == nullptr) {
+        LOG_E(TAG, "Failed to create TE sync semaphore");
+        return false;
+    }
+
+    gpio_config_t io_conf = {
+        .pin_bit_mask = 1ULL << te_pin,
+        .mode = GPIO_MODE_INPUT,
+        .pull_up_en = GPIO_PULLUP_DISABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_POSEDGE,
+    };
+    if (gpio_config(&io_conf) != ESP_OK) {
+        LOG_E(TAG, "Failed to configure TE GPIO");
+        vSemaphoreDelete(internal->te_semaphore);
+        internal->te_semaphore = nullptr;
+        return false;
+    }
+
+    esp_err_t ret = gpio_install_isr_service(ESP_INTR_FLAG_IRAM);
+    if (ret == ESP_OK) {
+        internal->te_isr_service_installed_by_us = true;
+    } else if (ret != ESP_ERR_INVALID_STATE) { // ESP_ERR_INVALID_STATE means it's already installed elsewhere
+        LOG_E(TAG, "Failed to install GPIO ISR service");
+        vSemaphoreDelete(internal->te_semaphore);
+        internal->te_semaphore = nullptr;
+        return false;
+    }
+
+    if (gpio_isr_handler_add(te_pin, te_isr_handler, internal->te_semaphore) != ESP_OK) {
+        LOG_E(TAG, "Failed to add TE ISR handler");
+        if (internal->te_isr_service_installed_by_us) {
+            gpio_uninstall_isr_service();
+            internal->te_isr_service_installed_by_us = false;
+        }
+        vSemaphoreDelete(internal->te_semaphore);
+        internal->te_semaphore = nullptr;
+        return false;
+    }
+
+    internal->te_isr_installed = true;
+    return true;
+}
+
+static void teardown_te_sync(Axs15231bDisplayInternal* internal, gpio_num_t te_pin) {
+    if (internal->te_isr_installed) {
+        gpio_isr_handler_remove(te_pin);
+        gpio_intr_disable(te_pin);
+        internal->te_isr_installed = false;
+    }
+    if (internal->te_isr_service_installed_by_us) {
+        gpio_uninstall_isr_service();
+        internal->te_isr_service_installed_by_us = false;
+    }
+    if (internal->te_semaphore != nullptr) {
+        vSemaphoreDelete(internal->te_semaphore);
+        internal->te_semaphore = nullptr;
+    }
+}
+
+static error_t start(Device* device) {
+    auto* parent = device_get_parent(device);
+    check(device_get_type(parent) == &SPI_CONTROLLER_TYPE);
+
+    const auto* spi_config = static_cast<const Esp32SpiConfig*>(parent->config);
+    const auto* config = GET_CONFIG(device);
+
+    struct GpioPinSpec cs_pin;
+    if (esp32_spi_get_cs_pin(device, &cs_pin) != ERROR_NONE) {
+        LOG_E(TAG, "Failed to resolve CS pin");
+        return ERROR_RESOURCE;
+    }
+
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(malloc(sizeof(Axs15231bDisplayInternal)));
+    if (internal == nullptr) {
+        return ERROR_OUT_OF_MEMORY;
+    }
+    internal->te_semaphore = nullptr;
+    internal->te_isr_installed = false;
+    internal->te_isr_service_installed_by_us = false;
+    internal->parsed_init_cmds = nullptr;
+
+    const axs15231b_lcd_init_cmd_t* init_cmds = nullptr;
+    uint16_t init_cmds_size = 0;
+    if (config->init_sequence != nullptr && config->init_sequence_length > 0) {
+        if (!parse_init_sequence(config->init_sequence, config->init_sequence_length, &internal->parsed_init_cmds, &init_cmds_size)) {
+            LOG_E(TAG, "Failed to parse init-sequence property");
+            free(internal);
+            return ERROR_INVALID_ARGUMENT;
+        }
+        init_cmds = internal->parsed_init_cmds;
+    }
+
+    internal->draw_done_semaphore = xSemaphoreCreateBinary();
+    if (internal->draw_done_semaphore == nullptr) {
+        free(internal->parsed_init_cmds);
+        free(internal);
+        return ERROR_OUT_OF_MEMORY;
+    }
+
+    // AXS15231B is only ever driven over QSPI in this codebase (no plain-SPI/i80 board has shown
+    // up yet), so quad_mode/lcd_cmd_bits/lcd_param_bits are fixed rather than devicetree knobs -
+    // matches AXS15231B_PANEL_IO_QSPI_CONFIG() in esp_lcd_axs15231b.h. dc_gpio_num is unused in
+    // QSPI mode (command/data framing goes over the command byte instead of a DC line).
+    esp_lcd_panel_io_spi_config_t io_config = {
+        .cs_gpio_num = pin_or_unused(cs_pin),
+        .dc_gpio_num = -1,
+        .spi_mode = 3,
+        .pclk_hz = config->pixel_clock_hz,
+        .trans_queue_depth = config->transaction_queue_depth,
+        .on_color_trans_done = on_color_trans_done,
+        .user_ctx = internal,
+        .lcd_cmd_bits = 32,
+        .lcd_param_bits = 8,
+        .cs_ena_pretrans = 0,
+        .cs_ena_posttrans = 0,
+        .flags = {
+            .dc_high_on_cmd = 0,
+            .dc_low_on_data = 0,
+            .dc_low_on_param = 0,
+            .octal_mode = 0,
+            .quad_mode = 1,
+            .sio_mode = 0,
+            .lsb_first = 0,
+            .cs_high_active = 0,
+        },
+    };
+
+    esp_err_t ret = esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)spi_config->host, &io_config, &internal->io_handle);
+    if (ret != ESP_OK) {
+        LOG_E(TAG, "Failed to create panel IO: %s", esp_err_to_name(ret));
+        vSemaphoreDelete(internal->draw_done_semaphore);
+        free(internal->parsed_init_cmds);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    axs15231b_vendor_config_t vendor_config = {
+        .init_cmds = init_cmds,
+        .init_cmds_size = init_cmds_size,
+        .flags = {
+            .use_qspi_interface = 1,
+        },
+    };
+
+    esp_lcd_panel_dev_config_t panel_config = {
+        .reset_gpio_num = pin_or_unused(config->pin_reset),
+        .rgb_ele_order = config->bgr_order ? LCD_RGB_ELEMENT_ORDER_BGR : LCD_RGB_ELEMENT_ORDER_RGB,
+        .data_endian = LCD_RGB_DATA_ENDIAN_LITTLE,
+        .bits_per_pixel = 16,
+        .flags = { .reset_active_high = config->reset_active_high },
+        .vendor_config = &vendor_config,
+    };
+
+    ret = esp_lcd_new_panel_axs15231b(internal->io_handle, &panel_config, &internal->panel_handle);
+    if (ret != ESP_OK) {
+        LOG_E(TAG, "Failed to create panel: %s", esp_err_to_name(ret));
+        esp_lcd_panel_io_del(internal->io_handle);
+        vSemaphoreDelete(internal->draw_done_semaphore);
+        free(internal->parsed_init_cmds);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    // Bring-up sequence. swap_xy is intentionally not called (and not exposed in DisplayApi below):
+    // It doesn't work on this chip/panel combination.
+    //
+    // esp_lcd_axs15231b's disp_on_off callback is wired up backwards: its body branches on a
+    // parameter it names "off" (true -> DISPOFF, false -> DISPON), but esp_lcd_panel_disp_on_off()
+    // forwards its "on_off" argument straight through with no inversion - so passing true here
+    // actually switches the panel OFF. Pass false to really turn it on (confirmed against the
+    // deleted deprecated-HAL driver, which called this same function with false for the same
+    // reason). See axs15231b_disp_on_off() below, which un-inverts this for DisplayApi callers.
+    //
+    // (note: all of this was tested on guition-jc3248w535c only)
+    bool ok =
+        esp_lcd_panel_reset(internal->panel_handle) == ESP_OK &&
+        esp_lcd_panel_init(internal->panel_handle) == ESP_OK &&
+        esp_lcd_panel_mirror(internal->panel_handle, config->mirror_x, config->mirror_y) == ESP_OK &&
+        esp_lcd_panel_invert_color(internal->panel_handle, config->invert_color) == ESP_OK &&
+        esp_lcd_panel_disp_on_off(internal->panel_handle, false) == ESP_OK;
+
+    if (!ok) {
+        LOG_E(TAG, "Failed to bring up panel");
+        esp_lcd_panel_del(internal->panel_handle);
+        esp_lcd_panel_io_del(internal->io_handle);
+        vSemaphoreDelete(internal->draw_done_semaphore);
+        free(internal->parsed_init_cmds);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    if (!setup_te_sync(internal, pin_or_nc(config->pin_te))) {
+        LOG_W(TAG, "TE sync setup failed, continuing without TE synchronization");
+    }
+
+    device_set_driver_data(device, internal);
+    return ERROR_NONE;
+}
+
+static error_t stop(Device* device) {
+    const auto* config = GET_CONFIG(device);
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+
+    teardown_te_sync(internal, pin_or_nc(config->pin_te));
+
+    if (internal->panel_handle != nullptr) {
+        if (esp_lcd_panel_del(internal->panel_handle) != ESP_OK) {
+            LOG_E(TAG, "Failed to delete panel");
+            return ERROR_RESOURCE;
+        }
+        internal->panel_handle = nullptr;
+    }
+
+    if (internal->io_handle != nullptr) {
+        if (esp_lcd_panel_io_del(internal->io_handle) != ESP_OK) {
+            LOG_E(TAG, "Failed to delete panel IO");
+            return ERROR_RESOURCE;
+        }
+        internal->io_handle = nullptr;
+    }
+
+    vSemaphoreDelete(internal->draw_done_semaphore);
+    free(internal->parsed_init_cmds);
+    free(internal);
+    device_set_driver_data(device, nullptr);
+    return ERROR_NONE;
+}
+
+// endregion
+
+// region DisplayApi
+
+static error_t axs15231b_reset(Device* device) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+    return esp_lcd_panel_reset(internal->panel_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_init(Device* device) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+    return esp_lcd_panel_init(internal->panel_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_draw_bitmap(Device* device, int32_t x_start, int32_t y_start, int32_t x_end, int32_t y_end, const void* color_data) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+
+    // Best-effort wait for the next V-blank pulse before transferring, to reduce visible tearing.
+    // Non-fatal if it times out (matches the original deprecated-HAL driver) - draw_bitmap()
+    // still has to happen even if TE sync missed its window.
+    if (internal->te_semaphore != nullptr) {
+        xSemaphoreTake(internal->te_semaphore, 0); // drain any already-pending signal
+        xSemaphoreTake(internal->te_semaphore, pdMS_TO_TICKS(20));
+    }
+
+    // Drain any stale signal left over from a prior non-draw transaction (bring-up commands like
+    // reset/init also complete through on_color_trans_done), so the take() below can only be
+    // satisfied by this draw's own transfer completing.
+    xSemaphoreTake(internal->draw_done_semaphore, 0);
+
+    if (esp_lcd_panel_draw_bitmap(internal->panel_handle, x_start, y_start, x_end, y_end, color_data) != ESP_OK) {
+        return ERROR_RESOURCE;
+    }
+
+    xSemaphoreTake(internal->draw_done_semaphore, portMAX_DELAY);
+    return ERROR_NONE;
+}
+
+static error_t axs15231b_mirror(Device* device, bool x_axis, bool y_axis) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+    return esp_lcd_panel_mirror(internal->panel_handle, x_axis, y_axis) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static bool axs15231b_get_mirror_x(Device* device) {
+    return GET_CONFIG(device)->mirror_x;
+}
+
+static bool axs15231b_get_mirror_y(Device* device) {
+    return GET_CONFIG(device)->mirror_y;
+}
+
+// swap_xy/set_gap/disp_sleep are not exposed: swap_xy is confirmed non-functional on this
+// chip/panel combination on real hardware (see start()'s comment), and the AXS15231B component
+// doesn't implement set_gap or disp_sleep at all.
+
+static error_t axs15231b_invert_color(Device* device, bool invert_color_data) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+    return esp_lcd_panel_invert_color(internal->panel_handle, invert_color_data) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_disp_on_off(Device* device, bool on_off) {
+    auto* internal = static_cast<Axs15231bDisplayInternal*>(device_get_driver_data(device));
+    // Inverted: see the comment on the disp_on_off call in start() above.
+    return esp_lcd_panel_disp_on_off(internal->panel_handle, !on_off) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+// _SWAPPED (not plain RGB565): the panel expects each 16-bit pixel high-byte-first over the QSPI
+// bus, but this CPU is little-endian - the original deprecated-HAL driver did the equivalent
+// byte-swap by hand in its custom flush callback (lv_draw_sw_rgb565_swap()); the generic
+// lvgl-module bridge does it for us once we report this format (see lvgl_display_map_color_format()).
+static enum DisplayColorFormat axs15231b_get_color_format(Device*) {
+    return DISPLAY_COLOR_FORMAT_RGB565_SWAPPED;
+}
+
+static uint16_t axs15231b_get_resolution_x(Device* device) {
+    return GET_CONFIG(device)->horizontal_resolution;
+}
+
+static uint16_t axs15231b_get_resolution_y(Device* device) {
+    return GET_CONFIG(device)->vertical_resolution;
+}
+
+static void axs15231b_get_frame_buffer(Device*, uint8_t, void** out_buffer) {
+    *out_buffer = nullptr;
+}
+
+static uint8_t axs15231b_get_frame_buffer_count(Device*) {
+    return 0;
+}
+
+static error_t axs15231b_get_backlight(Device* device, Device** backlight) {
+    auto* configured_backlight = GET_CONFIG(device)->backlight;
+    if (configured_backlight == nullptr) {
+        return ERROR_NOT_SUPPORTED;
+    }
+    *backlight = configured_backlight;
+    return ERROR_NONE;
+}
+
+// REQUIRES_FULL_FRAME is the only capability that varies per device instance (via the
+// requires-full-frame devicetree property, see axs15231b_display.h) - a sub-region draw_bitmap()
+// call desyncs this chip's row auto-increment counter, since its QSPI command set has no
+// row-address command, but that's been confirmed needed on some boards' wiring/panel combination
+// and not assumed true for every AXS15231B board (see start()'s notes on what's been tested where).
+// Every other bit stays fixed for the driver, mirrored here from axs15231b_display_api.capabilities.
+static bool axs15231b_has_capability(Device* device, uint32_t capability) {
+    uint32_t static_capabilities = DISPLAY_CAPABILITY_CAP_MIRROR | DISPLAY_CAPABILITY_INVERT_COLOR |
+        DISPLAY_CAPABILITY_ON_OFF | DISPLAY_CAPABILITY_BACKLIGHT;
+    if (GET_CONFIG(device)->requires_full_frame) {
+        static_capabilities |= DISPLAY_CAPABILITY_REQUIRES_FULL_FRAME;
+    }
+    return (static_capabilities & capability) == capability;
+}
+
+// endregion
+
+static const DisplayApi axs15231b_display_api = {
+    // Mirrors axs15231b_has_capability()'s static_capabilities for callers that read this field
+    // directly instead of going through display_has_capability()/has_capability(). Excludes
+    // REQUIRES_FULL_FRAME - see axs15231b_has_capability() above, which is the source of truth.
+    .capabilities = DISPLAY_CAPABILITY_CAP_MIRROR | DISPLAY_CAPABILITY_INVERT_COLOR |
+        DISPLAY_CAPABILITY_ON_OFF | DISPLAY_CAPABILITY_BACKLIGHT,
+    .reset = axs15231b_reset,
+    .init = axs15231b_init,
+    .draw_bitmap = axs15231b_draw_bitmap,
+    .mirror = axs15231b_mirror,
+    .swap_xy = nullptr,
+    .get_swap_xy = nullptr,
+    .get_mirror_x = axs15231b_get_mirror_x,
+    .get_mirror_y = axs15231b_get_mirror_y,
+    .set_gap = nullptr,
+    .invert_color = axs15231b_invert_color,
+    .disp_on_off = axs15231b_disp_on_off,
+    .disp_sleep = nullptr,
+    .get_color_format = axs15231b_get_color_format,
+    .get_resolution_x = axs15231b_get_resolution_x,
+    .get_resolution_y = axs15231b_get_resolution_y,
+    .get_frame_buffer = axs15231b_get_frame_buffer,
+    .get_frame_buffer_count = axs15231b_get_frame_buffer_count,
+    .get_backlight = axs15231b_get_backlight,
+    .has_capability = axs15231b_has_capability,
+};
+
+Driver axs15231b_display_driver = {
+    .name = "axs15231b_display",
+    .compatible = (const char*[]) { "axs,axs15231b", nullptr },
+    .start_device = start,
+    .stop_device = stop,
+    .api = &axs15231b_display_api,
+    .device_type = &DISPLAY_TYPE,
+    .owner = &axs15231b_module,
+    .internal = nullptr
+};
@@ -0,0 +1,211 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <drivers/axs15231b_touch.h>
+#include <axs15231b_module.h>
+
+#include <tactility/check.h>
+#include <tactility/device.h>
+#include <tactility/driver.h>
+#include <tactility/drivers/esp32_i2c.h>
+#include <tactility/drivers/esp32_i2c_master.h>
+#include <tactility/drivers/i2c_controller.h>
+#include <tactility/drivers/pointer.h>
+#include <tactility/error.h>
+#include <tactility/log.h>
+
+#include <esp_err.h>
+#include <esp_lcd_axs15231b.h>
+#include <esp_lcd_io_i2c.h>
+#include <esp_lcd_panel_io.h>
+#include <esp_lcd_touch.h>
+
+#include <cstdlib>
+
+#define TAG "AXS15231BTouch"
+#define GET_CONFIG(device) (static_cast<const Axs15231bTouchConfig*>((device)->config))
+
+struct Axs15231bTouchInternal {
+    esp_lcd_panel_io_handle_t io_handle;
+    esp_lcd_touch_handle_t touch_handle;
+};
+
+static inline gpio_num_t pin_or_nc(const struct GpioPinSpec& pin) {
+    return pin.gpio_controller == nullptr ? GPIO_NUM_NC : static_cast<gpio_num_t>(pin.pin);
+}
+
+// region Driver lifecycle
+
+// AXS15231B always sits at a fixed I2C address (ESP_LCD_TOUCH_IO_I2C_AXS15231B_ADDRESS), unlike
+// GT911's strapping-dependent address, so no bus probing is needed here.
+static esp_err_t create_io_handle(Device* parent, esp_lcd_panel_io_handle_t* out_handle) {
+    esp_lcd_panel_io_i2c_config_t io_config = ESP_LCD_TOUCH_IO_I2C_AXS15231B_CONFIG();
+
+    auto* parent_driver = device_get_driver(parent);
+    if (driver_is_compatible(parent_driver, "espressif,esp32-i2c")) {
+        auto port = static_cast<const Esp32I2cConfig*>(parent->config)->port;
+        return esp_lcd_new_panel_io_i2c_v1(port, &io_config, out_handle);
+    }
+    if (driver_is_compatible(parent_driver, "espressif,esp32-i2c-master")) {
+        auto bus = esp32_i2c_master_get_bus_handle(parent);
+        io_config.scl_speed_hz = esp32_i2c_master_get_clock_frequency(parent);
+        return esp_lcd_new_panel_io_i2c_v2(bus, &io_config, out_handle);
+    }
+
+    LOG_E(TAG, "Unsupported I2C driver");
+    return ESP_ERR_NOT_SUPPORTED;
+}
+
+static error_t start(Device* device) {
+    auto* parent = device_get_parent(device);
+    check(device_get_type(parent) == &I2C_CONTROLLER_TYPE);
+
+    const auto* config = GET_CONFIG(device);
+
+    auto* internal = static_cast<Axs15231bTouchInternal*>(malloc(sizeof(Axs15231bTouchInternal)));
+    if (internal == nullptr) {
+        return ERROR_OUT_OF_MEMORY;
+    }
+
+    esp_err_t ret = create_io_handle(parent, &internal->io_handle);
+    if (ret != ESP_OK) {
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    esp_lcd_touch_config_t touch_config = {
+        .x_max = config->x_max,
+        .y_max = config->y_max,
+        .rst_gpio_num = pin_or_nc(config->pin_reset),
+        .int_gpio_num = pin_or_nc(config->pin_interrupt),
+        .levels = {
+            .reset = config->reset_active_high ? 1u : 0u,
+            .interrupt = config->interrupt_active_high ? 1u : 0u,
+        },
+        .flags = {
+            .swap_xy = config->swap_xy ? 1u : 0u,
+            .mirror_x = config->mirror_x ? 1u : 0u,
+            .mirror_y = config->mirror_y ? 1u : 0u,
+        },
+        .process_coordinates = nullptr,
+        .interrupt_callback = nullptr,
+        .user_data = nullptr,
+        .driver_data = nullptr,
+    };
+
+    ret = esp_lcd_touch_new_i2c_axs15231b(internal->io_handle, &touch_config, &internal->touch_handle);
+    if (ret != ESP_OK) {
+        LOG_E(TAG, "Failed to create touch handle: %s", esp_err_to_name(ret));
+        esp_lcd_panel_io_del(internal->io_handle);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    device_set_driver_data(device, internal);
+    return ERROR_NONE;
+}
+
+static error_t stop(Device* device) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+
+    // esp_lcd_touch_del() only releases the touch-side resources; the panel IO handle is owned
+    // separately and needs its own deletion.
+    if (internal->touch_handle != nullptr) {
+        if (esp_lcd_touch_del(internal->touch_handle) != ESP_OK) {
+            LOG_E(TAG, "Failed to delete touch handle");
+            return ERROR_RESOURCE;
+        }
+        internal->touch_handle = nullptr;
+    }
+
+    if (internal->io_handle != nullptr) {
+        if (esp_lcd_panel_io_del(internal->io_handle) != ESP_OK) {
+            LOG_E(TAG, "Failed to delete panel IO handle");
+            return ERROR_RESOURCE;
+        }
+        internal->io_handle = nullptr;
+    }
+
+    free(internal);
+    device_set_driver_data(device, nullptr);
+    return ERROR_NONE;
+}
+
+// endregion
+
+// region PointerApi
+
+static error_t axs15231b_touch_enter_sleep(Device* device) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_enter_sleep(internal->touch_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_exit_sleep(Device* device) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_exit_sleep(internal->touch_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_read_data(Device* device, TickType_t timeout) {
+    (void)timeout; // esp_lcd_touch_read_data() has no timeout parameter
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_read_data(internal->touch_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static bool axs15231b_touch_get_touched_points(Device* device, uint16_t* x, uint16_t* y, uint16_t* strength, uint8_t* point_count, uint8_t max_point_count) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_get_coordinates(internal->touch_handle, x, y, strength, point_count, max_point_count);
+}
+
+static error_t axs15231b_touch_set_swap_xy(Device* device, bool swap) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_set_swap_xy(internal->touch_handle, swap) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_get_swap_xy(Device* device, bool* swap) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_get_swap_xy(internal->touch_handle, swap) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_set_mirror_x(Device* device, bool mirror) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_set_mirror_x(internal->touch_handle, mirror) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_get_mirror_x(Device* device, bool* mirror) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_get_mirror_x(internal->touch_handle, mirror) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_set_mirror_y(Device* device, bool mirror) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_set_mirror_y(internal->touch_handle, mirror) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+static error_t axs15231b_touch_get_mirror_y(Device* device, bool* mirror) {
+    auto* internal = static_cast<Axs15231bTouchInternal*>(device_get_driver_data(device));
+    return esp_lcd_touch_get_mirror_y(internal->touch_handle, mirror) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+// endregion
+
+static const PointerApi axs15231b_touch_pointer_api = {
+    .enter_sleep = axs15231b_touch_enter_sleep,
+    .exit_sleep = axs15231b_touch_exit_sleep,
+    .read_data = axs15231b_touch_read_data,
+    .get_touched_points = axs15231b_touch_get_touched_points,
+    .set_swap_xy = axs15231b_touch_set_swap_xy,
+    .get_swap_xy = axs15231b_touch_get_swap_xy,
+    .set_mirror_x = axs15231b_touch_set_mirror_x,
+    .get_mirror_x = axs15231b_touch_get_mirror_x,
+    .set_mirror_y = axs15231b_touch_set_mirror_y,
+    .get_mirror_y = axs15231b_touch_get_mirror_y,
+};
+
+Driver axs15231b_touch_driver = {
+    .name = "axs15231b_touch",
+    .compatible = (const char*[]) { "axs,axs15231b-touch", nullptr },
+    .start_device = start,
+    .stop_device = stop,
+    .api = &axs15231b_touch_pointer_api,
+    .device_type = &POINTER_TYPE,
+    .owner = &axs15231b_module,
+    .internal = nullptr
+};
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <tactility/check.h>
+#include <tactility/driver.h>
+#include <tactility/module.h>
+
+extern "C" {
+
+extern Driver axs15231b_display_driver;
+extern Driver axs15231b_touch_driver;
+
+static error_t start() {
+    /* We crash when construct fails, because if a single driver fails to construct,
+     * there is no guarantee that the previously constructed drivers can be destroyed */
+    check(driver_construct_add(&axs15231b_display_driver) == ERROR_NONE);
+    check(driver_construct_add(&axs15231b_touch_driver) == ERROR_NONE);
+    return ERROR_NONE;
+}
+
+static error_t stop() {
+    /* We crash when destruct fails, because if a single driver fails to destruct,
+     * there is no guarantee that the previously destroyed drivers can be recovered */
+    check(driver_remove_destruct(&axs15231b_touch_driver) == ERROR_NONE);
+    check(driver_remove_destruct(&axs15231b_display_driver) == ERROR_NONE);
+    return ERROR_NONE;
+}
+
+Module axs15231b_module = {
+    .name = "axs15231b",
+    .start = start,
+    .stop = stop,
+    .symbols = nullptr,
+    .internal = nullptr
+};
+
+} // extern "C"