games-util/xpadneo: update ERTM messages for kernel 5.12

The L2CAP patch is upstreamed in >=5.12, and ERTM is now instead
recommended by upstream to help with rumble stability:
atar-axis/xpadneo#272

For non-live, also install the L2CAP patch in docs/ as reference.

Signed-off-by: Ionen Wolkens <sudinave@gmail.com>

games-util/xpadneo/xpadneo-0.9.1.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=7
 
-inherit linux-mod toolchain-funcs udev
+inherit linux-info linux-mod toolchain-funcs udev
 
 if [[ ${PV} == 9999 ]]; then
 	inherit git-r3
@@ -36,25 +36,37 @@ src_install() {
 	udev_dorules etc-udev-rules.d/60-${PN}.rules
 
 	dodoc -r ../docs/{[^i]*.md,descriptors,reports} ../NEWS.md
+	newdoc ../misc/kernel_patches/0001-fix_bluetooth_reconnect.patch \
+		L2CAP-fix-for-kernel-5.11-or-older.patch
 }
 
 pkg_postinst() {
 	linux-mod_pkg_postinst
 	udev_reload
 
-	local ertm=/sys/module/bluetooth/parameters/disable_ertm
-	if ! [[ ${REPLACING_VERSIONS} && $(<${ertm}) == Y ]]; then
+	local disable_ertm=/sys/module/bluetooth/parameters/disable_ertm
+	if kernel_is -ge 5 12; then
+		if [[ $(<${disable_ertm}) == Y ]]; then
+			elog "Warning: bluetooth ERTM (Enhanced ReTransmission Mode) is disabled."
+			elog "This is no longer recommended with kernel >=5.12 to use ${PN}."
+			elog "Can remove ${EROOT}/etc/modprobe.d/no-ertm.conf if it exists, and run:"
+			elog "  echo N > ${disable_ertm}"
+			elog "After changing, may need to re-pair the gamepad with bluetooth."
+		fi
+	elif [[ $(<${disable_ertm}) == N ]]; then
+		elog "Warning: bluetooth ERTM (Enhanced ReTransmission Mode) is enabled."
+		elog "While keeping enabled is recommended for rumble usage stability, it can"
+		elog "cause connection issues without kernel >=5.12 or the L2CAP kernel patch"
+		elog "provided in ${EROOT}/usr/share/doc/${PF}/"
+		elog "If needed, this mode can be disabled by running:"
+		elog "  echo Y > ${disable_ertm}"
+		elog "  echo 'options bluetooth disable_ertm=y' > ${EROOT}/etc/modprobe.d/no-ertm.conf"
+		elog "After changing, may need to re-pair the gamepad with bluetooth."
+	fi
+
+	if [[ ! ${REPLACING_VERSIONS} ]]; then
 		elog "To pair the gamepad and view module options, see documentation in:"
-		elog "  ${EROOT}/usr/share/doc/${PF}"
-		elog
-		elog "Be warned that bluetooth's ERTM (Enhanced ReTransmission Mode) can"
-		elog "cause the gamepad to enter a re-connection loop."
-		elog "- To disable immediately:"
-		elog "    echo Y > ${ertm}"
-		elog "- To disable for next and subsequent boot:"
-		elog "    echo 'options bluetooth disable_ertm=y' > ${EROOT}/etc/modprobe.d/no-ertm.conf"
-		elog "- Or, if bluetooth isn't a module, add to the kernel's command line:"
-		elog "    bluetooth.disable_ertm=y"
+		elog "  ${EROOT}/usr/share/doc/${PF}/"
 	fi
 }
 

games-util/xpadneo/xpadneo-9999.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=7
 
-inherit linux-mod toolchain-funcs udev
+inherit linux-info linux-mod toolchain-funcs udev
 
 if [[ ${PV} == 9999 ]]; then
 	inherit git-r3
@@ -42,19 +42,28 @@ pkg_postinst() {
 	linux-mod_pkg_postinst
 	udev_reload
 
-	local ertm=/sys/module/bluetooth/parameters/disable_ertm
-	if ! [[ ${REPLACING_VERSIONS} && $(<${ertm}) == Y ]]; then
+	local disable_ertm=/sys/module/bluetooth/parameters/disable_ertm
+	if kernel_is -ge 5 12; then
+		if [[ $(<${disable_ertm}) == Y ]]; then
+			elog "Warning: bluetooth ERTM (Enhanced ReTransmission Mode) is disabled."
+			elog "This is no longer recommended with kernel >=5.12 to use ${PN}."
+			elog "Can remove ${EROOT}/etc/modprobe.d/no-ertm.conf if it exists, and run:"
+			elog "  echo N > ${disable_ertm}"
+			elog "After changing, may need to re-pair the gamepad with bluetooth."
+		fi
+	elif [[ $(<${disable_ertm}) == N ]]; then
+		elog "Warning: bluetooth ERTM (Enhanced ReTransmission Mode) is enabled."
+		elog "While keeping enabled is recommended for rumble usage stability, it can"
+		elog "cause connection issues without a fix included in kernel >=5.12"
+		elog "If needed, this mode can be disabled by running:"
+		elog "  echo Y > ${disable_ertm}"
+		elog "  echo 'options bluetooth disable_ertm=y' > ${EROOT}/etc/modprobe.d/no-ertm.conf"
+		elog "After changing, may need to re-pair the gamepad with bluetooth."
+	fi
+
+	if [[ ! ${REPLACING_VERSIONS} ]]; then
 		elog "To pair the gamepad and view module options, see documentation in:"
-		elog "  ${EROOT}/usr/share/doc/${PF}"
-		elog
-		elog "Be warned that bluetooth's ERTM (Enhanced ReTransmission Mode) can"
-		elog "cause the gamepad to enter a re-connection loop."
-		elog "- To disable immediately:"
-		elog "    echo Y > ${ertm}"
-		elog "- To disable for next and subsequent boot:"
-		elog "    echo 'options bluetooth disable_ertm=y' > ${EROOT}/etc/modprobe.d/no-ertm.conf"
-		elog "- Or, if bluetooth isn't a module, add to the kernel's command line:"
-		elog "    bluetooth.disable_ertm=y"
+		elog "  ${EROOT}/usr/share/doc/${PF}/"
 	fi
 }