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drivers: display: sdl: Ensure task thread is run once on init

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Adds taking of the task semaphore after creating the display thread
to ensure that the thread is run once, executing the SDL init.
Adjust the threads priority to match the main thread.

Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>
This commit is contained in:
Fabian Blatz 2025-04-22 10:52:52 +02:00 committed by Benjamin Cabé
parent ebd8803bd1
commit 8009614c16
2 changed files with 5 additions and 1 deletions
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2
drivers/display/Kconfig.sdl
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@ -90,7 +90,7 @@ config SDL_DISPLAY_TRANSPARENCY_GRID_CELL_COLOR_2
config SDL_DISPLAY_THREAD_PRIORITY
int "SDL display thread priority"
default NUM_PREEMPT_PRIORITIES
default MAIN_THREAD_PRIORITY
help
Drawing thread priority.

4
drivers/display/display_sdl.c
View File

@ -125,6 +125,8 @@ static void sdl_task_thread(void *p1, void *p2, void *p3)
CONFIG_SDL_DISPLAY_TRANSPARENCY_GRID_CELL_COLOR_2,
CONFIG_SDL_DISPLAY_TRANSPARENCY_GRID_CELL_SIZE);
k_sem_give(&disp_data->task_sem);
if (rc != 0) {
nsi_print_error_and_exit("Failed to create SDL display");
return;
@ -169,6 +171,8 @@ static int sdl_display_init(const struct device *dev)
K_KERNEL_STACK_SIZEOF(disp_data->sdl_thread_stack),
sdl_task_thread, (void *)dev, NULL, NULL,
CONFIG_SDL_DISPLAY_THREAD_PRIORITY, 0, K_NO_WAIT);
/* Ensure task thread has performed the init */
k_sem_take(&disp_data->task_sem, K_FOREVER);
return 0;
}