lv_linux_drm.h

Functions

lv_display_t *lv_linux_drm_create(void)

Create a new Linux DRM display.

Creates and initializes a new LVGL display using the Linux DRM (Direct Rendering Manager) subsystem for hardware-accelerated graphics output.

Returns:

Pointer to the created display object, or NULL on failure

void lv_linux_drm_set_file(lv_display_t *disp, const char *file, int64_t connector_id)

Configure the DRM device file and connector for a display.

Sets the DRM device file path and connector ID to use for the specified display. The DRM device file is typically located at /dev/dri/cardN where N is the card number. The connector ID specifies which physical output (HDMI, VGA, etc.) to use.

Parameters:

  • disp – Pointer to the display object created with lv_linux_drm_create()

  • file – Path to the DRM device file (e.g., "/dev/dri/card0")

  • connector_id – ID of the DRM connector to use, or -1 to auto-select the first available

char *lv_linux_drm_find_device_path(void)

Automatically find a suitable DRM device path.

Scans the system for available DRM devices and returns the path to a suitable device file that can be used with lv_linux_drm_set_file().

Returns:

Dynamically allocated string containing the device path (must be freed with lv_free()), or NULL if no suitable device is found