Onda Oliver Book A1 -- Getting Arch Linux to Work properly

10-monitors.conf

# /etc/X11/xorg.conf.d/10-monitors.conf
# rotate monitor correctly on X11
Section "Monitor"
  Identifier "DSI-1"
  Option "Rotate" "right"
EndSection

# rotate touchscreen input correctly on X11
Section "InputClass"
  Identifier "Touchscreen DSI-1"
  MatchIsTouchscreen "on"
  MatchDevicePath "/dev/input/event*"
  MatchDriver "libinput"
  Option "TransformationMatrix" "0 1 0 -1 0 1 0 0 1"
EndSection

10-touchpad.conf

# /etc/X11/xorg.conf.d/20-touchpad.conf
# enable touchpad tapping on X11
Section "InputClass"
  Identifier "Touchpad"
  MatchIsTouchpad "on"
  MatchDevicePath "/dev/input/event*"
  Driver "libinput"
  Option "Tapping" "on"
EndSection

10-virtualkbd.conf

# /etc/sddm.conf.d/10-virtualkbd.conf
# if you want a virtual keyboard in X11 SDDM
# don't use this if you use Wayland SDDM
[General]
InputMethod=qtvirtualkeyboard

10-wayland.conf

# /etc/sddm.conf.d/10-wayland.conf
# if you want Wayland SDDM
# don't use this if you use X11 SDDM

[General]
DisplayServer=wayland
GreeterEnvironment=QT_WAYLAND_SHELL_INTEGRATION=layer-shell

[Wayland]
CompositorCommand=kwin_wayland --drm --no-lockscreen --no-global-shortcuts --locale1 --inputmethod maliit-keyboard

70-accelerometer.hwdb

# /etc/udev/hwdb.d/70-accelerometer.hwdb
# needs package iio-sensor-proxy
sensor:modalias:acpi:KIOX0009*:dmi:*:svnOndaTLCGmbH:pnOliverBookA1:*
  ACCEL_MOUNT_MATRIX=0, 1, 0; 1, 0, 0; 0, 0, 1

70-touchscreen.rules

# /etc/udev/rules.d/70-touchscreen.rules
# calibration matrix for touchscreen to scale it to the whole screen and fix orientation
ACTION=="add", SUBSYSTEM=="input", ENV{ID_PATH}=="pci-0000:00:17.2-platform-i2c_designware-3", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 2.7 0 2.1 0 0"

fix-mode.service

# /etc/systemd/system/fix-mode.service
# fix graphical glitches at boot; resetting the CRTC makes the next modeset work 
[Unit]
Description=Fix DRM Mode
DefaultDependencies=no
Before=getty@tty1.service
Before=sddm.service
Before=plymouth-start.service

[Service]
Type=oneshot
ExecStart=/usr/local/bin/yeet DSI-1

[Install]
WantedBy=multi-user.target

grub-config

# /etc/default/grub
# quiet splash ... enable plymouth boot screen
# video ... rotate the panel on plymouth/wayland
# fbcon ... rotate the panel on tty
# i915.modeset ... disable modesetting, for initial install to set things up
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=DSI-1:panel_orientation=right_side_up fbcon=rotate:1"
#GRUB_CMDLINE_LINUX_DEFAULT="i915.modeset=0 fbcon=rotate:1"

kcminputrc

# /var/lib/sddm/.config/kcminputrc
# copy over from ~/.config/kcminputrc after configuring

mssl1680.fw

# /usr/lib/firmware/silead/mssl1680.fw
# copy over from https://github.com/Ferdi265/gsl-firmware at firmware/linux/silead/gsl1680-onda-oliver-book.fw

yeet.c

// /usr/local/bin/yeet
// needs package libdrm
// compile with gcc -Os -ldrm -I/usr/include/libdrm/ -o yeet yeet.c
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <sys/ioctl.h>
#include <linux/kd.h>

uint64_t get_property_value(int drm_fd, uint32_t object_id,
		uint32_t object_type, const char *prop_name) {
	drmModeObjectProperties *props =
		drmModeObjectGetProperties(drm_fd, object_id, object_type);
	for (uint32_t i = 0; i < props->count_props; i++) {
		drmModePropertyRes *prop = drmModeGetProperty(drm_fd, props->props[i]);
		uint64_t val = props->prop_values[i];
		if (strcmp(prop->name, prop_name) == 0) {
			drmModeFreeProperty(prop);
			drmModeFreeObjectProperties(props);
			return val;
		}
		drmModeFreeProperty(prop);
	}

	printf("Failed to find property %s\n", prop_name);
	exit(1);
}

void add_property(int drm_fd, drmModeAtomicReq *req, uint32_t object_id,
		uint32_t object_type, const char *prop_name, uint64_t value) {
	uint32_t prop_id = 0;
	drmModeObjectProperties *props =
		drmModeObjectGetProperties(drm_fd, object_id, object_type);
	for (uint32_t i = 0; i < props->count_props; i++) {
		drmModePropertyRes *prop = drmModeGetProperty(drm_fd, props->props[i]);
		if (strcmp(prop->name, prop_name) == 0) {
			prop_id = prop->prop_id;
			break;
		}
	}
	
	if (prop_id == 0) {
		printf("Failed to find property %s\n", prop_name);
		exit(1);
	}

	drmModeAtomicAddProperty(req, object_id, prop_id, value);
}

char * get_connector_name(drmModeConnector *conn) {
	const char *type_name = drmModeGetConnectorTypeName(conn->connector_type);
	if (type_name == NULL) return NULL;

	char *str = NULL;
	asprintf(&str, "%s-%d", type_name, conn->connector_type_id);
	return str;
}

int main(int argc, char *argv[]) {
	if (argc != 2) {
		printf("usage: yeet <CONNECTOR>\n");
		return 1;
	}

	char *conn_name = argv[1];

	printf("Opening DRM fd\n");
	int drm_fd = open("/dev/dri/card1", O_RDWR | O_NONBLOCK);
	if (drm_fd < 0) {
		perror("open failed");
		return 1;
	}

	if (drmSetClientCap(drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1) != 0) {
		perror("drmSetClientCap(UNIVERSAL_PLANES) failed");
		return 1;
	}
	if (drmSetClientCap(drm_fd, DRM_CLIENT_CAP_ATOMIC, 1) != 0) {
		perror("drmSetClientCap(ATOMIC) failed");
		return 1;
	}

	printf("Finding connector %s\n", conn_name);

	drmModeRes *resources = drmModeGetResources(drm_fd);
	drmModeConnector *conn = NULL;
	drmModeCrtc *crtc = NULL;
	for (int i = 0; i < resources->count_connectors; i++) {
		uint32_t conn_id = resources->connectors[i];
		conn = drmModeGetConnector(drm_fd, conn_id);

		if (conn->connection != DRM_MODE_CONNECTED) {
			drmModeFreeConnector(conn);
			conn = NULL;
			continue;
		}

		char *name = get_connector_name(conn);
		if (name == NULL || strcmp(name, conn_name) != 0) {
			free(name);
			drmModeFreeConnector(conn);
			conn = NULL;
			continue;
		}

		uint64_t crtc_id = get_property_value(drm_fd, conn_id, DRM_MODE_OBJECT_CONNECTOR, "CRTC_ID");
		crtc = drmModeGetCrtc(drm_fd, crtc_id);
		if (crtc == NULL) {
			printf("Connector %s has no CRTC\n", name);
			free(name);
			drmModeFreeConnector(conn);
			conn = NULL;
			return 1;
		}
		
		printf("Connector %s has CRTC %zd\n", name, crtc_id);
		free(name);
		break;
	}

	drmModeFreeResources(resources);

	// Yeet the CRTC 
	printf("Yeeting the CRTC\n");

	drmModeAtomicReq *req = drmModeAtomicAlloc();

	add_property(drm_fd, req, conn->connector_id, DRM_MODE_OBJECT_CONNECTOR, "CRTC_ID", 0); 
	add_property(drm_fd, req, crtc->crtc_id, DRM_MODE_OBJECT_CRTC, "MODE_ID", 0); 
	add_property(drm_fd, req, crtc->crtc_id, DRM_MODE_OBJECT_CRTC, "ACTIVE", 0); 
	
	uint32_t flags = DRM_MODE_ATOMIC_ALLOW_MODESET;
	int ret = drmModeAtomicCommit(drm_fd, req, flags, NULL);
	if (ret != 0) {
		printf("Failed to yeet the CRTC\n");
		return 1;
	}
	
	printf("Restoring text mode\n");
	int fd = open("/dev/tty", O_RDWR | O_NOCTTY);
	ioctl(fd, KDSETMODE, KD_TEXT);

	return 0;
}

@Ferdi265 In fact I had to modify fix-mode to start after lightdm. As for sound, alsamixer reports sof-essx8336 on my system it worked once I installed sof-firmware.