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(ssd1306-module
+    SRCS ${SOURCE_FILES}
+    INCLUDE_DIRS include/
+    REQUIRES TactilityKernel platform-esp32 esp_lcd driver
+)
@@ -0,0 +1,195 @@
+Apache License
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+
@@ -0,0 +1,52 @@
+description: Solomon Systech SSD1306 monochrome OLED display panel (I2C interface)
+
+include: ["i2c-device.yaml"]
+
+compatible: "solomon,ssd1306"
+
+bus: i2c
+
+properties:
+  horizontal-resolution:
+    type: int
+    required: true
+    description: Horizontal resolution in pixels (typically 128)
+  vertical-resolution:
+    type: int
+    required: true
+    description: Vertical resolution in pixels (typically 32 or 64)
+  invert-color:
+    type: boolean
+    default: false
+    description: Invert the panel's color output
+  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
+  power-on-delay-ms:
+    type: int
+    default: 0
+    description: >
+      Extra delay before reset/init, in milliseconds. Useful when the panel's power rail is
+      gated by a gpio-hog node: devicetree devices (including gpio-hog) are constructed and
+      started during kernel_init(), with no built-in settle time between one device starting
+      and the next, so a panel whose power was only just enabled a moment earlier may need this
+      to let its rail stabilize before communication starts. 0 (the default) adds no delay.
+  init-sequence:
+    type: array
+    element-type: uint8_t
+    description: >
+      Custom vendor bring-up sequence: a flat list of command bytes, each sent as its own
+      single-byte SSD1306 command (some standalone, some acting as a parameter to the byte
+      before them - this chip's protocol doesn't distinguish the two at the wire level, and
+      neither does this encoding). Omit to use the SSD1306 component's own generic
+      esp_lcd_panel_init() sequence instead - note that some panels are known not to
+      initialize correctly through it (see e.g. the Heltec WiFi LoRa 32 V3's own required
+      override), so most boards should supply their own sequence here.
+
+# No 'backlight' property: SSD1306 is a self-emitting OLED panel with no backlight to control,
+# unlike this repo's other display bindings.
@@ -0,0 +1,3 @@
+dependencies:
+  - TactilityKernel
+bindings: bindings
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/bindings/bindings.h>
+#include <drivers/ssd1306.h>
+
+// The devicetree compiler derives the expected config typedef name from the compatible
+// string's suffix (e.g. "solomon,ssd1306" -> ssd1306_config_dt), not from the node name or
+// driver name, so the tag here must match that exactly.
+DEFINE_DEVICETREE(ssd1306, struct Ssd1306Config)
@@ -0,0 +1,38 @@
+// 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 Ssd1306Config {
+    // Devicetree address hint - unlike this repo's other I2C touch chips (which sit at a fixed
+    // address), the SSD1306's address genuinely varies by hardware strap (0x3C or 0x3D), so this
+    // is actually used, not just documentation.
+    uint8_t address;
+    uint16_t horizontal_resolution;
+    uint16_t vertical_resolution;
+    bool invert_color;
+
+    // Reset pin. GPIO_PIN_SPEC_NONE skips the reset toggle entirely.
+    struct GpioPinSpec pin_reset;
+    bool reset_active_high;
+
+    // See the 'power-on-delay-ms' binding property.
+    uint32_t power_on_delay_ms;
+
+    // Custom vendor init sequence: a flat list of command bytes, each sent as its own
+    // single-byte SSD1306 command. NULL/0 falls back to the standard esp_lcd_panel_init().
+    const uint8_t* init_sequence;
+    uint32_t init_sequence_length;
+};
+
+#ifdef __cplusplus
+}
+#endif
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/module.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern struct Module ssd1306_module;
+
+#ifdef __cplusplus
+}
+#endif
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <tactility/check.h>
+#include <tactility/driver.h>
+#include <tactility/module.h>
+
+extern "C" {
+
+extern Driver ssd1306_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(&ssd1306_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(&ssd1306_driver) == ERROR_NONE);
+    return ERROR_NONE;
+}
+
+Module ssd1306_module = {
+    .name = "ssd1306",
+    .start = start,
+    .stop = stop,
+    .symbols = nullptr,
+    .internal = nullptr
+};
+
+} // extern "C"
@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <drivers/ssd1306.h>
+#include <ssd1306_module.h>
+
+#include <tactility/check.h>
+#include <tactility/device.h>
+#include <tactility/driver.h>
+#include <tactility/drivers/display.h>
+#include <tactility/drivers/esp32_i2c.h>
+#include <tactility/drivers/esp32_i2c_master.h>
+#include <tactility/drivers/i2c_controller.h>
+#include <tactility/error.h>
+#include <tactility/log.h>
+
+#include <esp_err.h>
+#include <esp_lcd_io_i2c.h>
+#include <esp_lcd_panel_io.h>
+#include <esp_lcd_panel_ops.h>
+#include <esp_lcd_panel_ssd1306.h>
+
+#include <driver/gpio.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+
+#include <cstdlib>
+#include <cstring>
+
+#define TAG "SSD1306"
+#define GET_CONFIG(device) (static_cast<const Ssd1306Config*>((device)->config))
+
+struct Ssd1306Internal {
+    esp_lcd_panel_io_handle_t io_handle;
+    esp_lcd_panel_handle_t panel_handle;
+    // Scratch buffer for the page-format transpose in ssd1306_draw_bitmap(); sized once for the
+    // full panel resolution and reused every draw_bitmap() call to avoid a malloc/free per frame.
+    uint8_t* page_buf;
+    size_t page_buf_size;
+};
+
+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);
+}
+
+// region Driver lifecycle
+
+static esp_err_t create_io_handle(Device* parent, uint8_t address, esp_lcd_panel_io_handle_t* out_handle) {
+    // dc_bit_offset=6/dc_low_on_data=false gives a 0x00 control byte before command bytes and
+    // 0x40 before pixel data - the standard SSD1306 I2C control-byte convention. lcd_cmd_bits=0
+    // means tx_param()'s own "cmd" phase is skipped entirely (see send_command() below): every
+    // command byte is transmitted as if it were "data" following the correct control byte,
+    // rather than a separately-framed command - this chip's protocol has no such framing to begin
+    // with, unlike the multi-byte-per-command SPI/QSPI panels elsewhere in this repo.
+    esp_lcd_panel_io_i2c_config_t io_config = {
+        .dev_addr = address,
+        .on_color_trans_done = nullptr,
+        .user_ctx = nullptr,
+        .control_phase_bytes = 1,
+        .dc_bit_offset = 6,
+        .lcd_cmd_bits = 0,
+        .lcd_param_bits = 0,
+        .flags = {
+            .dc_low_on_data = false,
+            .disable_control_phase = false,
+        },
+        .scl_speed_hz = 0,
+    };
+
+    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;
+}
+
+// Sends a single SSD1306 command byte: [control byte, this byte]. lcd_cmd is passed as 0 and
+// ignored on the wire (see create_io_handle()'s comment) - only param/param_size actually reach
+// the bus, so this doubles as the mechanism for both standalone commands (e.g. 0xAE display-off)
+// and command+parameter pairs (each byte of which is just its own call to this function, matching
+// how the original hand-written driver issued them as separate I2C writes).
+static bool send_command(esp_lcd_panel_io_handle_t io, uint8_t command) {
+    return esp_lcd_panel_io_tx_param(io, 0, &command, 1) == ESP_OK;
+}
+
+static bool send_init_sequence(esp_lcd_panel_io_handle_t io, const uint8_t* bytes, uint32_t length) {
+    for (uint32_t i = 0; i < length; i++) {
+        if (!send_command(io, bytes[i])) {
+            LOG_E(TAG, "Failed to send init sequence byte %lu", (unsigned long)i);
+            return false;
+        }
+    }
+    return true;
+}
+
+// Manual reset with explicit timing, rather than going through esp_lcd_panel_reset(): this
+// chip/config combination is known to need a specific assert/settle timing that the panel's
+// standard reset (which we intentionally never wire up - reset_gpio_num is always -1 below) may
+// not otherwise match. Runs before the panel handle is even created, so a subsequent init sees a
+// freshly-reset chip.
+static void perform_hardware_reset(const Ssd1306Config* config) {
+    gpio_num_t pin = pin_or_nc(config->pin_reset);
+    if (pin == GPIO_NUM_NC) {
+        return;
+    }
+
+    gpio_config_t io_conf = {
+        .pin_bit_mask = 1ULL << pin,
+        .mode = GPIO_MODE_OUTPUT,
+        .pull_up_en = GPIO_PULLUP_DISABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE,
+    };
+    gpio_config(&io_conf);
+
+    gpio_set_level(pin, config->reset_active_high ? 1 : 0);
+    vTaskDelay(pdMS_TO_TICKS(10));
+    gpio_set_level(pin, config->reset_active_high ? 0 : 1);
+    vTaskDelay(pdMS_TO_TICKS(100));
+}
+
+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<Ssd1306Internal*>(malloc(sizeof(Ssd1306Internal)));
+    if (internal == nullptr) {
+        return ERROR_OUT_OF_MEMORY;
+    }
+
+    internal->page_buf_size = (size_t)config->horizontal_resolution * ((config->vertical_resolution + 7) / 8);
+    internal->page_buf = static_cast<uint8_t*>(malloc(internal->page_buf_size));
+    if (internal->page_buf == nullptr) {
+        free(internal);
+        return ERROR_OUT_OF_MEMORY;
+    }
+
+    // Lets a power rail gated by a gpio-hog node (asserted moments earlier, during the same
+    // kernel_init() pass) stabilize before this device tries to reset/talk to the chip. See the
+    // 'power-on-delay-ms' binding property.
+    if (config->power_on_delay_ms > 0) {
+        vTaskDelay(pdMS_TO_TICKS(config->power_on_delay_ms));
+    }
+
+    if (create_io_handle(parent, config->address, &internal->io_handle) != ESP_OK) {
+        LOG_E(TAG, "Failed to create panel IO");
+        free(internal->page_buf);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    perform_hardware_reset(config);
+
+    esp_lcd_panel_ssd1306_config_t ssd1306_config = {
+        .height = static_cast<uint8_t>(config->vertical_resolution),
+    };
+
+    // color_space (not rgb_ele_order): this deprecated union member is the only one whose type
+    // can express ESP_LCD_COLOR_SPACE_MONOCHROME - rgb_ele_order's own enum only covers RGB/BGR.
+    esp_lcd_panel_dev_config_t panel_config = {
+        .reset_gpio_num = -1, // always -1: reset is handled manually above, not by the panel itself
+        .color_space = ESP_LCD_COLOR_SPACE_MONOCHROME,
+        .data_endian = LCD_RGB_DATA_ENDIAN_BIG,
+        .bits_per_pixel = 1,
+        .flags = { .reset_active_high = false },
+        .vendor_config = &ssd1306_config,
+    };
+
+    if (esp_lcd_new_panel_ssd1306(internal->io_handle, &panel_config, &internal->panel_handle) != ESP_OK) {
+        LOG_E(TAG, "Failed to create panel");
+        esp_lcd_panel_io_del(internal->io_handle);
+        free(internal->page_buf);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    // Bring-up sequence. Every failure path below must clean up fully: unlike stop_device, this
+    // is never retried by the kernel if start_device fails (see device_start() in
+    // TactilityKernel), so a partial failure here would leak.
+    bool ok;
+    if (config->init_sequence != nullptr && config->init_sequence_length > 0) {
+        ok = send_init_sequence(internal->io_handle, config->init_sequence, config->init_sequence_length);
+    } else {
+        ok = esp_lcd_panel_init(internal->panel_handle) == ESP_OK;
+    }
+    ok = ok && (!config->invert_color || esp_lcd_panel_invert_color(internal->panel_handle, true) == ESP_OK);
+    ok = ok && esp_lcd_panel_disp_on_off(internal->panel_handle, true) == 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);
+        free(internal->page_buf);
+        free(internal);
+        return ERROR_RESOURCE;
+    }
+
+    vTaskDelay(pdMS_TO_TICKS(100)); // Let the panel stabilize before the first real draw_bitmap()
+
+    device_set_driver_data(device, internal);
+    return ERROR_NONE;
+}
+
+static error_t stop(Device* device) {
+    auto* internal = static_cast<Ssd1306Internal*>(device_get_driver_data(device));
+
+    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;
+    }
+
+    free(internal->page_buf);
+    free(internal);
+    device_set_driver_data(device, nullptr);
+    return ERROR_NONE;
+}
+
+// endregion
+
+// region DisplayApi
+
+static error_t ssd1306_reset(Device* device) {
+    perform_hardware_reset(GET_CONFIG(device));
+    return ERROR_NONE;
+}
+
+static error_t ssd1306_init(Device* device) {
+    auto* internal = static_cast<Ssd1306Internal*>(device_get_driver_data(device));
+    const auto* config = GET_CONFIG(device);
+    bool ok;
+    if (config->init_sequence != nullptr && config->init_sequence_length > 0) {
+        ok = send_init_sequence(internal->io_handle, config->init_sequence, config->init_sequence_length);
+    } else {
+        ok = esp_lcd_panel_init(internal->panel_handle) == ESP_OK;
+    }
+    return ok ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+// DISPLAY_COLOR_FORMAT_MONOCHROME's wire format (matching LVGL's LV_COLOR_FORMAT_I1, palette
+// stripped) is row-major: each byte packs 8 horizontally-adjacent pixels, MSB = leftmost. The
+// SSD1306's GDDRAM is page-addressed instead: each byte packs 8 *vertically* adjacent pixels of
+// one column, LSB = topmost row of the page. Transpose one into the other before handing off to
+// the vendor component, which expects page format directly.
+static void transpose_row_major_to_pages(const uint8_t* src, int32_t width, int32_t height, uint8_t* out) {
+    uint32_t row_stride = (uint32_t)(width + 7) / 8;
+    for (int32_t y = 0; y < height; y++) {
+        uint8_t page = (uint8_t)(y / 8);
+        uint8_t bit_in_page = (uint8_t)(y % 8);
+        for (int32_t x = 0; x < width; x++) {
+            uint8_t src_byte = src[y * row_stride + x / 8];
+            uint8_t pixel = (src_byte >> (7 - (x % 8))) & 0x01;
+            out[page * width + x] |= (uint8_t)(pixel << bit_in_page);
+        }
+    }
+}
+
+static error_t ssd1306_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<Ssd1306Internal*>(device_get_driver_data(device));
+    int32_t width = x_end - x_start;
+    int32_t height = y_end - y_start;
+    size_t needed = (size_t)width * ((height + 7) / 8);
+    check(needed <= internal->page_buf_size);
+
+    memset(internal->page_buf, 0, needed);
+    transpose_row_major_to_pages(static_cast<const uint8_t*>(color_data), width, height, internal->page_buf);
+
+    return esp_lcd_panel_draw_bitmap(internal->panel_handle, x_start, y_start, x_end, y_end, internal->page_buf) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+// mirror/swap_xy/set_gap are not exposed: the SSD1306 vendor component doesn't implement them.
+
+static error_t ssd1306_invert_color(Device* device, bool invert_color_data) {
+    auto* internal = static_cast<Ssd1306Internal*>(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 ssd1306_disp_on_off(Device* device, bool on_off) {
+    auto* internal = static_cast<Ssd1306Internal*>(device_get_driver_data(device));
+    return esp_lcd_panel_disp_on_off(internal->panel_handle, on_off) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+}
+
+// disp_sleep is not exposed: the SSD1306 vendor component doesn't implement it either (display
+// on/off via 0xAE/0xAF is this chip's equivalent, already covered by disp_on_off above).
+
+static enum DisplayColorFormat ssd1306_get_color_format(Device*) {
+    return DISPLAY_COLOR_FORMAT_MONOCHROME;
+}
+
+static uint16_t ssd1306_get_resolution_x(Device* device) {
+    return GET_CONFIG(device)->horizontal_resolution;
+}
+
+static uint16_t ssd1306_get_resolution_y(Device* device) {
+    return GET_CONFIG(device)->vertical_resolution;
+}
+
+static void ssd1306_get_frame_buffer(Device*, uint8_t, void** out_buffer) {
+    *out_buffer = nullptr;
+}
+
+static uint8_t ssd1306_get_frame_buffer_count(Device*) {
+    return 0;
+}
+
+// get_backlight is not exposed: SSD1306 is a self-emitting OLED panel with no backlight.
+
+// endregion
+
+static const DisplayApi ssd1306_display_api = {
+    .capabilities = DISPLAY_CAPABILITY_INVERT_COLOR | DISPLAY_CAPABILITY_ON_OFF,
+    .reset = ssd1306_reset,
+    .init = ssd1306_init,
+    .draw_bitmap = ssd1306_draw_bitmap,
+    .mirror = nullptr,
+    .swap_xy = nullptr,
+    .get_swap_xy = nullptr,
+    .get_mirror_x = nullptr,
+    .get_mirror_y = nullptr,
+    .set_gap = nullptr,
+    .invert_color = ssd1306_invert_color,
+    .disp_on_off = ssd1306_disp_on_off,
+    .disp_sleep = nullptr,
+    .get_color_format = ssd1306_get_color_format,
+    .get_resolution_x = ssd1306_get_resolution_x,
+    .get_resolution_y = ssd1306_get_resolution_y,
+    .get_frame_buffer = ssd1306_get_frame_buffer,
+    .get_frame_buffer_count = ssd1306_get_frame_buffer_count,
+    .get_backlight = nullptr,
+    .has_capability = nullptr,
+};
+
+Driver ssd1306_driver = {
+    .name = "ssd1306",
+    .compatible = (const char*[]) { "solomon,ssd1306", nullptr },
+    .start_device = start,
+    .stop_device = stop,
+    .api = &ssd1306_display_api,
+    .device_type = &DISPLAY_TYPE,
+    .owner = &ssd1306_module,
+    .internal = nullptr
+};