Device migrations, driver migrations and more (#575)
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cmake_minimum_required(VERSION 3.20)
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include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
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file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
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tactility_add_module(gc9a01-module
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SRCS ${SOURCE_FILES}
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INCLUDE_DIRS include/
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REQUIRES TactilityKernel platform-esp32 esp_lcd_gc9a01 driver
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)
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@@ -0,0 +1,195 @@
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Apache License
|
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==============
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_Version 2.0, January 2004_
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@@ -0,0 +1,5 @@
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# GC9A01 display
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A driver for the `GC9A01` round display panel by Galaxycore, over SPI.
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License: [Apache v2.0](LICENSE-Apache-2.0.md)
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@@ -0,0 +1,67 @@
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description: Galaxycore GC9A01 round display panel
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bus: spi
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compatible: "galaxycore,gc9a01"
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properties:
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horizontal-resolution:
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type: int
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required: true
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description: Horizontal resolution in pixels
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vertical-resolution:
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type: int
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required: true
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description: Vertical resolution in pixels
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gap-x:
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type: int
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default: 0
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description: X offset applied to all draw operations
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gap-y:
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type: int
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default: 0
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description: Y offset applied to all draw operations
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swap-xy:
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type: boolean
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default: false
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description: Swap the X and Y axes
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mirror-x:
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type: boolean
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default: false
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description: Mirror the X axis
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mirror-y:
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type: boolean
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default: false
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description: Mirror the Y axis
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invert-color:
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type: boolean
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default: false
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description: Invert the panel's color output
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bgr-order:
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type: boolean
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default: false
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description: Use BGR element order instead of RGB
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pixel-clock-hz:
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type: int
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default: 80000000
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description: SPI pixel clock frequency in Hz
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transaction-queue-depth:
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type: int
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default: 10
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description: Size of the internal SPI transaction queue
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pin-dc:
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type: phandles
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required: true
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description: Data/Command GPIO pin
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pin-reset:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: Reset GPIO pin
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reset-active-high:
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type: boolean
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default: false
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description: Whether the reset pin is active high
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backlight:
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type: phandle
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default: "NULL"
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description: Optional reference to this display's backlight device
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@@ -0,0 +1,3 @@
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dependencies:
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- TactilityKernel
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bindings: bindings
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@@ -0,0 +1,7 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <tactility/bindings/bindings.h>
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#include <drivers/gc9a01.h>
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DEFINE_DEVICETREE(gc9a01, struct Gc9a01Config)
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@@ -0,0 +1,35 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <tactility/device.h>
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#include <tactility/drivers/gpio.h>
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struct Gc9a01Config {
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uint16_t horizontal_resolution;
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uint16_t vertical_resolution;
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int32_t gap_x;
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int32_t gap_y;
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bool swap_xy;
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bool mirror_x;
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bool mirror_y;
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bool invert_color;
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bool bgr_order;
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uint32_t pixel_clock_hz;
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uint8_t transaction_queue_depth;
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struct GpioPinSpec pin_dc;
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struct GpioPinSpec pin_reset;
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bool reset_active_high;
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// Optional reference to this display's backlight device, NULL if none.
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struct Device* backlight;
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};
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,14 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <tactility/module.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern struct Module gc9a01_module;
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,322 @@
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// SPDX-License-Identifier: Apache-2.0
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#include <drivers/gc9a01.h>
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#include <gc9a01_module.h>
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#include <tactility/check.h>
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#include <tactility/device.h>
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#include <tactility/driver.h>
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#include <tactility/drivers/display.h>
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#include <tactility/drivers/esp32_spi.h>
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#include <tactility/drivers/spi_controller.h>
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#include <tactility/error.h>
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#include <tactility/log.h>
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#include <esp_err.h>
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#include <esp_lcd_gc9a01.h>
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#include <esp_lcd_io_spi.h>
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#include <esp_lcd_panel_io.h>
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#include <esp_lcd_panel_ops.h>
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#include <freertos/semphr.h>
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#include <cstdlib>
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constexpr auto* TAG = "GC9A01";
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#define GET_CONFIG(device) (static_cast<const Gc9a01Config*>((device)->config))
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struct Gc9a01Internal {
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esp_lcd_panel_io_handle_t io_handle;
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esp_lcd_panel_handle_t panel_handle;
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// See st7796-module's identical field for why this exists: draw_bitmap() must block until
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// the transfer physically completes (DisplayApi's synchronous contract).
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SemaphoreHandle_t draw_done_semaphore;
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};
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static bool IRAM_ATTR on_color_trans_done(esp_lcd_panel_io_handle_t, esp_lcd_panel_io_event_data_t*, void* user_ctx) {
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auto* internal = static_cast<Gc9a01Internal*>(user_ctx);
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BaseType_t high_task_woken = pdFALSE;
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xSemaphoreGiveFromISR(internal->draw_done_semaphore, &high_task_woken);
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return high_task_woken == pdTRUE;
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}
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||||
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static int pin_or_unused(const struct GpioPinSpec& pin) {
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return pin.gpio_controller == nullptr ? -1 : static_cast<int>(pin.pin);
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}
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||||
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||||
// region Driver lifecycle
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||||
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static error_t start(Device* device) {
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||||
auto* parent = device_get_parent(device);
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check(device_get_type(parent) == &SPI_CONTROLLER_TYPE);
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||||
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||||
const auto* spi_config = static_cast<const Esp32SpiConfig*>(parent->config);
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const auto* config = GET_CONFIG(device);
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||||
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||||
struct GpioPinSpec cs_pin;
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||||
if (esp32_spi_get_cs_pin(device, &cs_pin) != ERROR_NONE) {
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||||
LOG_E(TAG, "Failed to resolve CS pin");
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||||
return ERROR_RESOURCE;
|
||||
}
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||||
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||||
auto* internal = static_cast<Gc9a01Internal*>(malloc(sizeof(Gc9a01Internal)));
|
||||
if (internal == nullptr) {
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||||
return ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
|
||||
internal->draw_done_semaphore = xSemaphoreCreateBinary();
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||||
if (internal->draw_done_semaphore == nullptr) {
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||||
free(internal);
|
||||
return ERROR_OUT_OF_MEMORY;
|
||||
}
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||||
|
||||
esp_lcd_panel_io_spi_config_t io_config = {
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||||
.cs_gpio_num = pin_or_unused(cs_pin),
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||||
.dc_gpio_num = pin_or_unused(config->pin_dc),
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||||
.spi_mode = 0,
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||||
.pclk_hz = config->pixel_clock_hz,
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||||
.trans_queue_depth = config->transaction_queue_depth,
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||||
.on_color_trans_done = on_color_trans_done,
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||||
.user_ctx = internal,
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||||
.lcd_cmd_bits = 8,
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||||
.lcd_param_bits = 8,
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||||
.cs_ena_pretrans = 0,
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||||
.cs_ena_posttrans = 0,
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||||
.flags = {
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||||
.dc_high_on_cmd = 0,
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||||
.dc_low_on_data = 0,
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||||
.dc_low_on_param = 0,
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||||
.octal_mode = 0,
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||||
.quad_mode = 0,
|
||||
.sio_mode = 0,
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||||
.lsb_first = 0,
|
||||
.cs_high_active = 0,
|
||||
},
|
||||
};
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||||
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||||
esp_err_t ret = esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)spi_config->host, &io_config, &internal->io_handle);
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||||
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);
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||||
return ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
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 = nullptr,
|
||||
};
|
||||
|
||||
ret = esp_lcd_new_panel_gc9a01(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);
|
||||
return ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
// Bring-up sequence, order matches the deprecated HAL's Gc9a01Display (proven correct on real
|
||||
// Waveshare S3 Touch LCD 1.28 hardware). Every failure path below must clean up fully: unlike
|
||||
// stop_device, this is never retried by the kernel if start_device fails.
|
||||
bool ok =
|
||||
esp_lcd_panel_reset(internal->panel_handle) == ESP_OK &&
|
||||
esp_lcd_panel_init(internal->panel_handle) == ESP_OK;
|
||||
|
||||
if (ok) {
|
||||
ok = (config->gap_x == 0 && config->gap_y == 0) || esp_lcd_panel_set_gap(internal->panel_handle, config->gap_x, config->gap_y) == ESP_OK;
|
||||
}
|
||||
ok = ok && (!config->swap_xy || esp_lcd_panel_swap_xy(internal->panel_handle, true) == ESP_OK);
|
||||
ok = ok && ((!config->mirror_x && !config->mirror_y) || esp_lcd_panel_mirror(internal->panel_handle, config->mirror_x, config->mirror_y) == 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);
|
||||
vSemaphoreDelete(internal->draw_done_semaphore);
|
||||
free(internal);
|
||||
return ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
device_set_driver_data(device, internal);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t stop(Device* device) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(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;
|
||||
}
|
||||
|
||||
vSemaphoreDelete(internal->draw_done_semaphore);
|
||||
free(internal);
|
||||
device_set_driver_data(device, nullptr);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
// endregion
|
||||
|
||||
// region DisplayApi
|
||||
|
||||
static error_t gc9a01_reset(Device* device) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_reset(internal->panel_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
static error_t gc9a01_init(Device* device) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_init(internal->panel_handle) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
static error_t gc9a01_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<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
|
||||
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 gc9a01_mirror(Device* device, bool x_axis, bool y_axis) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_mirror(internal->panel_handle, x_axis, y_axis) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
static error_t gc9a01_swap_xy(Device* device, bool swap_axes) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_swap_xy(internal->panel_handle, swap_axes) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
static bool gc9a01_get_swap_xy(Device* device) {
|
||||
return GET_CONFIG(device)->swap_xy;
|
||||
}
|
||||
|
||||
static bool gc9a01_get_mirror_x(Device* device) {
|
||||
return GET_CONFIG(device)->mirror_x;
|
||||
}
|
||||
|
||||
static bool gc9a01_get_mirror_y(Device* device) {
|
||||
return GET_CONFIG(device)->mirror_y;
|
||||
}
|
||||
|
||||
static error_t gc9a01_set_gap(Device* device, int32_t x_gap, int32_t y_gap) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_set_gap(internal->panel_handle, x_gap, y_gap) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
static int32_t gc9a01_get_gap_x(Device* device) {
|
||||
return GET_CONFIG(device)->gap_x;
|
||||
}
|
||||
|
||||
static int32_t gc9a01_get_gap_y(Device* device) {
|
||||
return GET_CONFIG(device)->gap_y;
|
||||
}
|
||||
|
||||
static error_t gc9a01_invert_color(Device* device, bool invert_color_data) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(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 gc9a01_disp_on_off(Device* device, bool on_off) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_disp_on_off(internal->panel_handle, on_off) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
static error_t gc9a01_disp_sleep(Device* device, bool sleep) {
|
||||
auto* internal = static_cast<Gc9a01Internal*>(device_get_driver_data(device));
|
||||
return esp_lcd_panel_disp_sleep(internal->panel_handle, sleep) == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
// The deprecated HAL's Gc9a01Display always set swap_bytes=true on its lvgl_port config
|
||||
// regardless of rgb_ele_order, so the byte-swapped format applies unconditionally here too -
|
||||
// bgr_order only affects the panel's hardware element order (applied in start(), above).
|
||||
static enum DisplayColorFormat gc9a01_get_color_format(Device*) {
|
||||
return DISPLAY_COLOR_FORMAT_RGB565_SWAPPED;
|
||||
}
|
||||
|
||||
static uint16_t gc9a01_get_resolution_x(Device* device) {
|
||||
return GET_CONFIG(device)->horizontal_resolution;
|
||||
}
|
||||
|
||||
static uint16_t gc9a01_get_resolution_y(Device* device) {
|
||||
return GET_CONFIG(device)->vertical_resolution;
|
||||
}
|
||||
|
||||
static void gc9a01_get_frame_buffer(Device*, uint8_t, void** out_buffer) {
|
||||
*out_buffer = nullptr;
|
||||
}
|
||||
|
||||
static uint8_t gc9a01_get_frame_buffer_count(Device*) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
static error_t gc9a01_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;
|
||||
}
|
||||
|
||||
// endregion
|
||||
|
||||
static const DisplayApi gc9a01_display_api = {
|
||||
.capabilities = DISPLAY_CAPABILITY_CAP_MIRROR | DISPLAY_CAPABILITY_CAP_SWAP_XY |
|
||||
DISPLAY_CAPABILITY_CAP_SET_GAP | DISPLAY_CAPABILITY_INVERT_COLOR | DISPLAY_CAPABILITY_ON_OFF |
|
||||
DISPLAY_CAPABILITY_SLEEP | DISPLAY_CAPABILITY_BACKLIGHT,
|
||||
.reset = gc9a01_reset,
|
||||
.init = gc9a01_init,
|
||||
.draw_bitmap = gc9a01_draw_bitmap,
|
||||
.mirror = gc9a01_mirror,
|
||||
.swap_xy = gc9a01_swap_xy,
|
||||
.get_swap_xy = gc9a01_get_swap_xy,
|
||||
.get_mirror_x = gc9a01_get_mirror_x,
|
||||
.get_mirror_y = gc9a01_get_mirror_y,
|
||||
.set_gap = gc9a01_set_gap,
|
||||
.get_gap_x = gc9a01_get_gap_x,
|
||||
.get_gap_y = gc9a01_get_gap_y,
|
||||
.invert_color = gc9a01_invert_color,
|
||||
.disp_on_off = gc9a01_disp_on_off,
|
||||
.disp_sleep = gc9a01_disp_sleep,
|
||||
.get_color_format = gc9a01_get_color_format,
|
||||
.get_resolution_x = gc9a01_get_resolution_x,
|
||||
.get_resolution_y = gc9a01_get_resolution_y,
|
||||
.get_frame_buffer = gc9a01_get_frame_buffer,
|
||||
.get_frame_buffer_count = gc9a01_get_frame_buffer_count,
|
||||
.get_backlight = gc9a01_get_backlight,
|
||||
.has_capability = nullptr,
|
||||
};
|
||||
|
||||
Driver gc9a01_driver = {
|
||||
.name = "gc9a01",
|
||||
.compatible = (const char*[]) { "galaxycore,gc9a01", nullptr },
|
||||
.start_device = start,
|
||||
.stop_device = stop,
|
||||
.api = &gc9a01_display_api,
|
||||
.device_type = &DISPLAY_TYPE,
|
||||
.owner = &gc9a01_module,
|
||||
.internal = nullptr
|
||||
};
|
||||
@@ -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 gc9a01_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(&gc9a01_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(&gc9a01_driver) == ERROR_NONE);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
Module gc9a01_module = {
|
||||
.name = "gc9a01",
|
||||
.start = start,
|
||||
.stop = stop,
|
||||
.symbols = nullptr,
|
||||
.internal = nullptr
|
||||
};
|
||||
|
||||
} // extern "C"
|
||||
Reference in New Issue
Block a user