samsung-m20lte: new device

Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/8603>
2026-05-02 20:06:05 +02:00 · 2026-05-02 20:06:05 +02:00 · a76125ccb2
commit a76125ccb2
parent 20bfba5913
11 changed files with 5729 additions and 0 deletions
--- a/device/downstream/device-samsung-m20lte/APKBUILD
+++ b/device/downstream/device-samsung-m20lte/APKBUILD
@ -0,0 +1,31 @@
+# Reference: <https://postmarketos.org/devicepkg>
+maintainer="Diego Stocco <diegostocco.2008@gmail.com>"
+pkgname=device-samsung-m20lte
+pkgdesc="Samsung Galaxy M20"
+pkgver=1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="aarch64"
+depends="
+	android-tools-mkbootimg
+	dtbtool-exynos
+	firmware-samsung-m20lte
+	linux-samsung-m20lte
+	postmarketos-base
+"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+options="!archcheck !check"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="
+4fb6e7c7a32bd3e595e2261d89e8b7252310ed96ee28f8e942bb303c21af11b8da9db200df930c076e7dc06b22d6844e2919752b752da41b721a3f4ebf6f1354  deviceinfo
+"
--- a/device/downstream/device-samsung-m20lte/deviceinfo
+++ b/device/downstream/device-samsung-m20lte/deviceinfo
@ -0,0 +1,34 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell
+# scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Samsung Galaxy M20"
+deviceinfo_manufacturer="Samsung"
+deviceinfo_codename="samsung-m20lte"
+deviceinfo_year="2019"
+deviceinfo_dtb="exynos/exynos7904-m20lte_swa_open_04"
+deviceinfo_arch="aarch64"
+
+# Device related
+deviceinfo_chassis="handset"
+deviceinfo_external_storage="true"
+
+# Bootloader related
+deviceinfo_flash_method="heimdall-bootimg"
+deviceinfo_generate_bootimg="true"
+deviceinfo_flash_pagesize="2048"
+deviceinfo_bootimg_qcdt="true"
+deviceinfo_bootimg_qcdt_type="exynos"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0xf0000000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_heimdall_partition_kernel="BOOT"
+deviceinfo_flash_heimdall_partition_rootfs="USERDATA"
+
+# Fix for small boot partition
+deviceinfo_create_initfs_extra="true"
+
+# Try to solve "ERROR: Failed to confirm end of file transfer sequence" in heimdall
+deviceinfo_flash_sparse="true"
--- a/device/downstream/firmware-samsung-m20lte/APKBUILD
+++ b/device/downstream/firmware-samsung-m20lte/APKBUILD
@ -0,0 +1,32 @@
+maintainer="Diego Stocco <diegostocco.2008@gmail.com>"
+pkgname=firmware-samsung-m20lte
+pkgver=1
+pkgrel=0
+_commit="340fa274fefee4dc4ef9973fc0837ec557ac9736"
+pkgdesc="Firmware for the Samsung Galaxy M20"
+url="https://github.com/DiegoStocco/vendor_samsung-m20lte"
+arch="aarch64"
+license="proprietary"
+options="!archcheck !check !spdx !strip !tracedeps pmb:cross-native"
+builddir="$srcdir/vendor_samsung-m20lte-$_commit/vendor/etc/wifi/"
+# Source
+source="$pkgname-$_commit.tar.gz::https://github.com/DiegoStocco/vendor_samsung-m20lte/archive/$_commit.tar.gz"
+
+package() {
+	#WIFI FIRMWARE
+	install -Dm644 mx \
+		-t "$pkgdir"/usr/lib/firmware/postmarketos/mx140/
+	install -Dm644 mx140.bin \
+		-t "$pkgdir"/usr/lib/firmware/postmarketos/mx140/
+	install -Dm644 mx140_bt.hcf \
+		-t "$pkgdir"/usr/lib/firmware/postmarketos/mx140/
+	install -Dm644 mx140_wlan.hcf \
+		-t "$pkgdir"/usr/lib/firmware/postmarketos/mx140/
+	install -Dm644 mx140_wlan_t.hcf \
+		-t "$pkgdir"/usr/lib/firmware/postmarketos/mx140/
+}
+
+sha512sums="
+615f75855936a71e9b9761f7a51a716da35e3cc7ce584b7961895f3c597fbfc83ecfc41449131d8cdb40acb0b888f97cf3900c7a0245bb9e7069318c84c2e6db  firmware-samsung-m20lte-340fa274fefee4dc4ef9973fc0837ec557ac9736.tar.gz
+"
+
--- a/device/downstream/linux-samsung-m20lte/APKBUILD
+++ b/device/downstream/linux-samsung-m20lte/APKBUILD
@ -0,0 +1,84 @@
+# Reference: <https://postmarketos.org/vendorkernel>
+# Kernel config based on: arch/arm64/configs/m20lte_defconfig
+
+maintainer="Diego Stocco <diegostocco.2008@gmail.com>"
+pkgname=linux-samsung-m20lte
+pkgver=4.4.177
+pkgrel=0
+_commit="339a04eabab9310ad9f6039831f6834d7f9d3c2b"
+pkgdesc="Samsung Galaxy M20 kernel fork"
+arch="aarch64"
+_carch="arm64"
+_flavor="samsung-m20lte"
+url="https://kernel.org"
+license="GPL-2.0-only"
+makedepends="
+	bash
+	bc
+	bison
+	devicepkg-dev
+	dtbtool-exynos
+	findutils
+	flex
+	openssl-dev
+	perl
+"
+_config="config-$_flavor.$arch"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/android_kernel_samsung_universal7904/archive/$_commit.tar.gz
+	$_config
+	fix-check-lxdialog.patch
+	fix-scsc-kconfig.patch
+	fix-decon.patch
+	fix-multiple-modules.patch
+	fix-spinlock.patch
+	fix-usblog-proc-notify-not-included.patch
+"
+options="!check !strip !tracedeps pmb:cross-native"
+builddir="$srcdir/android_kernel_samsung_universal7904-$_commit"
+_outdir="out"
+
+prepare() {
+	default_prepare
+	. downstreamkernel_prepare
+}
+
+build() {
+	unset LDFLAGS
+	make O="$_outdir" ARCH="$_carch" CROSS_COMPILE= CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+
+	# deviceinfo_bootimg_qcdt
+	dtbTool-exynos -o "$_outdir/arch/$_carch/boot"/dt.img \
+		$(find "$_outdir/arch/$_carch/boot/dts/" -name *m20lte*.dtb)
+}
+
+package() {
+	downstreamkernel_package "$builddir" "$pkgdir" "$_carch" \
+		"$_flavor" "$_outdir"
+	install -Dm644 "$_outdir/arch/$_carch/boot"/dt.img \
+		-t "$pkgdir"/boot/
+
+	make modules_install \
+		O="$_outdir" \
+		ARCH="$_carch" \
+		INSTALL_PATH="$pkgdir"/boot/ \
+		INSTALL_MOD_PATH="$pkgdir"/usr \
+		INSTALL_MOD_STRIP=1
+
+	mkdir "$pkgdir"/boot/dtbs
+	mkdir "$pkgdir"/boot/dtbs/exynos
+	install -Dm644 $(find "$_outdir/arch/$_carch/boot/dts/" -name *m20lte*.dtb) \
+		"$pkgdir"/boot/dtbs/exynos/$(basename $(find "$_outdir/arch/$_carch/boot/dts/" -name *m20lte*.dtb))
+}
+
+sha512sums="
+663f7cff6dee546104a34f38ba27f89211ef40514e4ebdf63d4bc60a523f31d831e349060b70cc407498a33044ced3d0e806b8325c07f7b5a3b829d610bef490  linux-samsung-m20lte-339a04eabab9310ad9f6039831f6834d7f9d3c2b.tar.gz
+93c5aa1ad25a32a11aaba114ad16dc4a31595b8466594c3c76ae362db590a8b0c0f5d0a160b242fe5275052e9e9b26fa1367959441065e7127c325a5dc19367a  config-samsung-m20lte.aarch64
+182be3c596b9cc267ac108d7cf03fc8c328ccc6b36770800e4dcedea8d1bb65e3f5eacf590c2948f58b1418cc60a1670ba77dde8c259e428d158c31b6e1dbaf5  fix-check-lxdialog.patch
+2038a0e7b3a076e83e4a8fa2e5d35650c52f947985ca58310aaf94211756eef1635bb3c8e047a77ecc0a69de55f49be37081bfd570e49031b2397a9d6de87285  fix-scsc-kconfig.patch
+88a5ef18d9eb31e6d80317925907651229529cd41f8b181b61c14ff56b340341c8ff5c95ab0dd9562b9575d4e206623e7dc039a9eb6b34c455165878df63cd86  fix-decon.patch
+707d7fe4cde4932f6cf8fc1c33c0b5ab3fbb522a6b8f456ae42d3070783a7d0984b645e4850db618c03d87d559951678fe078c321b07ad41ef25543f3895557d  fix-multiple-modules.patch
+47b313f27b4d0e04f9635e887ad3cfe7d741b43b5ade2fd0149a585e0ade77162e8507c71df369af13cb6bd9f0176b67ba723d44e437c530c7345ad32d195dca  fix-spinlock.patch
+94cff37f62cc61aa5c6b97f2497b03bb4c0bf9f112f7ce950cdc7ef8345ebb802a16e40a5fbea6830d17c3dce50db1402837344d2a2a30f77521934343607837  fix-usblog-proc-notify-not-included.patch
+"
--- a/device/downstream/linux-samsung-m20lte/config-samsung-m20lte.aarch64
+++ b/device/downstream/linux-samsung-m20lte/config-samsung-m20lte.aarch64
--- a/device/downstream/linux-samsung-m20lte/fix-check-lxdialog.patch
+++ b/device/downstream/linux-samsung-m20lte/fix-check-lxdialog.patch
@ -0,0 +1 @@
+../../.shared-patches/linux/fix-check-lxdialog.patch
--- a/device/downstream/linux-samsung-m20lte/fix-decon.patch
+++ b/device/downstream/linux-samsung-m20lte/fix-decon.patch
@ -0,0 +1,157 @@
+Subject: [PATCH] decon fix
+---
+Index: drivers/video/fbdev/exynos/dpu_7885/decon_core.c
+IDEA additional info:
+Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
+<+>UTF-8
+===================================================================
+diff --git a/drivers/video/fbdev/exynos/dpu_7885/decon_core.c b/drivers/video/fbdev/exynos/dpu_7885/decon_core.c
+--- a/drivers/video/fbdev/exynos/dpu_7885/decon_core.c	(revision 5eeafe2bfcb93847b403fd92bd92f9d0a9f6341d)
+++ b/drivers/video/fbdev/exynos/dpu_7885/decon_core.c	(date 1644158930000)
+@@ -703,11 +703,15 @@
+ 	return ret;
+ }
+ 
+int decon_set_vsync_int(struct fb_info *info, bool active);
+extern int needs_pan;
+
+ static int decon_blank(int blank_mode, struct fb_info *info)
+ {
+ 	struct decon_win *win = info->par;
+ 	struct decon_device *decon = win->decon;
+ 	int ret = 0;
+	struct fb_info *fb_info;
+ 
+ 	decon_info("%s + blank_mode: %d, decon-%d %s mode: %dtype (0: DSI, 1: eDP, 2:DP, 3: WB)\n",
+ 			__func__, blank_mode,
+@@ -741,6 +745,10 @@
+ 			goto blank_exit;
+ 		}
+ 		atomic_set(&decon->ffu_flag, 2);
+		
+		needs_pan = true;
+		fb_info = decon->win[decon->dt.dft_win]->fbinfo;
+		decon_set_vsync_int(fb_info, true);
+ 		break;
+ 	case FB_BLANK_VSYNC_SUSPEND:
+ 	case FB_BLANK_HSYNC_SUSPEND:
+@@ -2152,18 +2160,6 @@
+ 	return ret;
+ }
+ 
+-static ssize_t decon_fb_read(struct fb_info *info, char __user *buf,
+-		size_t count, loff_t *ppos)
+-{
+-	return 0;
+-}
+-
+-static ssize_t decon_fb_write(struct fb_info *info, const char __user *buf,
+-		size_t count, loff_t *ppos)
+-{
+-	return 0;
+-}
+-
+ int decon_release(struct fb_info *info, int user)
+ {
+ 	struct decon_win *win = info->par;
+@@ -2217,12 +2213,12 @@
+ 	.fb_blank	= decon_blank,
+ 	.fb_setcolreg	= decon_setcolreg,
+ 	.fb_fillrect    = cfb_fillrect,
+	.fb_copyarea    = cfb_copyarea,
+	.fb_imageblit   = cfb_imageblit,
+ #ifdef CONFIG_COMPAT
+ 	.fb_compat_ioctl = decon_compat_ioctl,
+ #endif
+ 	.fb_ioctl	= decon_ioctl,
+-	.fb_read	= decon_fb_read,
+-	.fb_write	= decon_fb_write,
+ 	.fb_pan_display	= decon_pan_display,
+ 	.fb_mmap	= decon_mmap,
+ 	.fb_release	= decon_release,
+@@ -2532,6 +2528,7 @@
+ 	}
+ 
+ 	fbinfo->fix.type	= FB_TYPE_PACKED_PIXELS;
+	fbinfo->fix.visual	= FB_VISUAL_TRUECOLOR,
+ 	fbinfo->fix.accel	= FB_ACCEL_NONE;
+ 	fbinfo->var.activate	= FB_ACTIVATE_NOW;
+ 	fbinfo->var.vmode	= FB_VMODE_NONINTERLACED;
+@@ -2846,7 +2843,7 @@
+ 		decon->bts.ops->bts_update_qos_disp(decon, decon->dt.disp_freq);
+ 
+ 	decon_to_init_param(decon, &p);
+-#if !defined(BRINGUP_DECON_BIST)
+#if 0// !defined(BRINGUP_DECON_BIST)
+ 	if (decon_reg_init(decon->id, decon->dt.out_idx[0], &p) < 0)
+ 		goto decon_init_done;
+ #else
+@@ -2879,7 +2876,7 @@
+ 	set_bit(decon->dt.dft_idma, &decon->prev_used_dpp);
+ 	memset(&config, 0, sizeof(struct decon_win_config));
+ 	config.dpp_parm.addr[0] = fbinfo->fix.smem_start;
+-	config.format = DECON_PIXEL_FORMAT_BGRA_8888;
+	config.format = DECON_PIXEL_FORMAT_ARGB_8888;
+ 	config.src.w = fbinfo->var.xres;
+ 	config.src.h = fbinfo->var.yres;
+ 	config.src.f_w = fbinfo->var.xres;
+@@ -2922,10 +2919,11 @@
+ 	call_panel_ops(dsim, displayon, dsim);
+ 	decon_reg_start(decon->id, &psr);
+ 	decon_wait_for_vsync(decon, VSYNC_TIMEOUT_MSEC);
+	decon_set_vsync_int(fbinfo, true);
+ 	if (decon_reg_wait_update_done_and_mask(decon->id, &psr,
+ 				SHADOW_UPDATE_TIMEOUT) < 0)
+ 		decon_err("%s: wait_for_update_timeout\n", __func__);
+-#if !defined(BRINGUP_DECON_BIST)
+#if 0 //!defined(BRINGUP_DECON_BIST)
+ decon_init_done:
+ #endif
+ 	decon->state = DECON_STATE_INIT;
+Index: drivers/video/fbdev/exynos/dpu_7885/decon_dsi.c
+IDEA additional info:
+Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
+<+>UTF-8
+===================================================================
+diff --git a/drivers/video/fbdev/exynos/dpu_7885/decon_dsi.c b/drivers/video/fbdev/exynos/dpu_7885/decon_dsi.c
+--- a/drivers/video/fbdev/exynos/dpu_7885/decon_dsi.c	(revision 5eeafe2bfcb93847b403fd92bd92f9d0a9f6341d)
+++ b/drivers/video/fbdev/exynos/dpu_7885/decon_dsi.c	(date 1644158930000)
+@@ -353,6 +353,8 @@
+ }
+ static DEVICE_ATTR(vsync, S_IRUGO, decon_show_vsync, NULL);
+ 
+int needs_pan = false;
+
+ static int decon_vsync_thread(void *data)
+ {
+ 	struct decon_device *decon = data;
+@@ -363,6 +365,20 @@
+ 			!ktime_equal(timestamp, decon->vsync.timestamp) &&
+ 			decon->vsync.active);
+ 
+		struct decon_mode_info psr;
+		
+		if (needs_pan) {
+			//Verrrry hacky and bad... plox gib better solution
+			struct fb_info *fb_info = decon->win[decon->dt.dft_win]->fbinfo;
+			struct fb_var_screeninfo *var = &fb_info->var;
+			usleep_range(200000, 201000);
+			decon_pan_display(var, fb_info);
+			needs_pan = false;
+		}
+
+		decon_to_psr_info(decon, &psr);
+		decon_reg_start(decon->id, &psr);
+
+ 		if (!ret)
+ 			sysfs_notify(&decon->dev->kobj, NULL, "vsync");
+ 	}
+@@ -692,7 +708,7 @@
+ 		break;
+ 	case 24:
+ 	case 32:
+-		config.format = DECON_PIXEL_FORMAT_ABGR_8888;
+		config.format = DECON_PIXEL_FORMAT_ARGB_8888;
+ 		shift = 4;
+ 		break;
+ 	default:
--- a/device/downstream/linux-samsung-m20lte/fix-multiple-modules.patch
+++ b/device/downstream/linux-samsung-m20lte/fix-multiple-modules.patch
@ -0,0 +1,29 @@
+diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c
+index 771a3ad5..109b819f 100755
+--- a/drivers/usb/gadget/function/f_acm.c
+++ b/drivers/usb/gadget/function/f_acm.c
+@@ -874,8 +874,8 @@ static void __exit acm_exit(void)
+ {
+ 	return usb_function_unregister(&acmusb_func);
+ }
+-module_init(acm_init);
+-module_exit(acm_exit);
+// module_init(acm_init);
+// module_exit(acm_exit);
+ #endif
+ 
+ MODULE_LICENSE("GPL");
+diff --git a/drivers/usb/gadget/function/f_uts.c b/drivers/usb/gadget/function/f_uts.c
+index 27b6eb99..44d5c94a 100755
+--- a/drivers/usb/gadget/function/f_uts.c
+++ b/drivers/usb/gadget/function/f_uts.c
+@@ -868,7 +868,7 @@ static void __exit uts_exit(void)
+ {
+ 	return usb_function_unregister(&utsusb_func);
+ }
+-module_init(uts_init);
+-module_exit(uts_exit);
+// module_init(uts_init);
+// module_exit(uts_exit);
+ #endif
+ MODULE_LICENSE("GPL");
--- a/device/downstream/linux-samsung-m20lte/fix-scsc-kconfig.patch
+++ b/device/downstream/linux-samsung-m20lte/fix-scsc-kconfig.patch
@ -0,0 +1,13 @@
+diff --git a/drivers/misc/samsung/scsc/Kconfig b/drivers/misc/samsung/scsc/Kconfig
+index 59386756..85839432 100755
+--- a/drivers/misc/samsung/scsc/Kconfig
+++ b/drivers/misc/samsung/scsc/Kconfig
+@@ -13,7 +13,7 @@ config SCSC_CORE_FW_LOCATION
+ 	  Select the FW location, when CONFIG_SCSC_CORE_FW_LOCATION_AUTO=n
+ 
+ config SCSC_CORE_FW_LOCATION_AUTO
+-	string "SCSC FW location auto select"
+	bool "SCSC FW location auto select"
+ 	default y
+ 	---help---
+ 	  Select the FW location (Android N/O) automatically
--- a/device/downstream/linux-samsung-m20lte/fix-spinlock.patch
+++ b/device/downstream/linux-samsung-m20lte/fix-spinlock.patch
@ -0,0 +1,20 @@
+diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
+index 49effc34..8d559239 100755
+--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
+@@ -508,13 +508,13 @@ static void hidg_disable(struct usb_function *f)
+ 	usb_ep_disable(hidg->in_ep);
+ 	usb_ep_disable(hidg->out_ep);
+ 
+-	spin_lock_irqsave(&hidg->read_spinlock, flags);
+	spin_lock_irqsave(&hidg->spinlock, flags);
+ 	list_for_each_entry_safe(list, next, &hidg->completed_out_req, list) {
+ 		free_ep_req(hidg->out_ep, list->req);
+ 		list_del(&list->list);
+ 		kfree(list);
+ 	}
+-	spin_unlock_irqrestore(&hidg->read_spinlock, flags);
+	spin_unlock_irqrestore(&hidg->spinlock, flags);
+ }
+ 
+ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
--- a/device/downstream/linux-samsung-m20lte/fix-usblog-proc-notify-not-included.patch
+++ b/device/downstream/linux-samsung-m20lte/fix-usblog-proc-notify-not-included.patch
@ -0,0 +1,13 @@
+diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
+index 83cbae2d..5f376388 100755
+--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
+@@ -10,6 +10,8 @@
+ #include "u_os_desc.h"
+ #include <linux/soc/samsung/exynos-soc.h>
+ 
+#include <linux/usblog_proc_notify.h>
+
+ #ifdef CONFIG_USB_CONFIGFS_UEVENT
+ #include <linux/platform_device.h>
+ #include <linux/kdev_t.h>
				`@ -0,0 +1 @@`
				`../../.shared-patches/linux/fix-check-lxdialog.patch`