From 8c229ee0a8fc72a5a22bef3653b60afdcc402625 Mon Sep 17 00:00:00 2001
From: Martin Wilck <mwilck@suse.com>
Date: Tue, 29 May 2018 09:28:09 +0200
Subject: [PATCH] udev: support firmware detection for pointing sticks

Add support for firmware detection on pointing stick devices. This
is needed for ALPS only at this time.

Signed-off-by: Martin Wilck <mwilck@suse.com>
---
 udev/90-libinput-model-quirks.rules.in | 16 ++++++++++------
 udev/libinput-model-quirks.c           | 15 +++++++++++++++
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/udev/90-libinput-model-quirks.rules.in b/udev/90-libinput-model-quirks.rules.in
index 7c73f0a..f29cb8a 100644
--- a/udev/90-libinput-model-quirks.rules.in
+++ b/udev/90-libinput-model-quirks.rules.in
@@ -11,18 +11,22 @@
 ACTION!="add|change", GOTO="libinput_model_quirks_end"
 KERNEL!="event*", GOTO="libinput_model_quirks_end"
 
-# Touchpad firmware detection, two-stage process.
+# Firmware detection, two-stage process.
 # First, run the program and import the LIBINPUT_MODEL_FIRMWARE_VERSION
 # environment (if any)
-KERNELS=="*input*", \
-  IMPORT{program}="@UDEV_TEST_PATH@libinput-model-quirks %S%p"
-
-# Second, match on anything with that env set and import from the hwdb
 KERNELS=="*input*", \
   ENV{ID_INPUT_TOUCHPAD}=="1", \
-  ENV{LIBINPUT_MODEL_FIRMWARE_VERSION}!="", \
+  ENV{.DETECT_FWVERSION}="1"
+KERNELS=="*input*", \
+  ENV{ID_INPUT_POINTINGSTICK}=="1", \
+  ENV{.DETECT_FWVERSION}="1"
+ENV{.DETECT_FWVERSION}!="1", GOTO="skip_fwversion"
+
+IMPORT{program}="@UDEV_TEST_PATH@libinput-model-quirks %S%p"
+ENV{LIBINPUT_MODEL_FIRMWARE_VERSION}!="", \
   IMPORT{builtin}="hwdb 'libinput:name:$attr{name}:fwversion:$env{LIBINPUT_MODEL_FIRMWARE_VERSION}'"
 # End of touchpad firmware detection
+LABEL="skip_fwversion"
 
 # libinput:touchpad:<modalias>
 ENV{ID_INPUT_TOUCHPAD}=="1", \
diff --git a/udev/libinput-model-quirks.c b/udev/libinput-model-quirks.c
index d1d5a68..9eb1505 100644
--- a/udev/libinput-model-quirks.c
+++ b/udev/libinput-model-quirks.c
@@ -108,6 +108,19 @@ handle_touchpad(struct udev_device *device)
 		handle_touchpad_synaptics(device);
 }
 
+static void
+handle_pointingstick(struct udev_device *device)
+{
+	const char *name = NULL;
+
+	name = prop_value(device, "NAME");
+	if (!name)
+		return;
+
+	if (strstr(name, "AlpsPS/2 ALPS") != NULL)
+		handle_touchpad_alps(device);
+}
+
 /**
  * For a non-zero fuzz on the x/y axes, print that fuzz as property and
  * reset the kernel's fuzz to 0.
@@ -187,6 +200,8 @@ int main(int argc, char **argv)
 
 	if (prop_value(device, "ID_INPUT_TOUCHPAD"))
 		handle_touchpad(device);
+	if (prop_value(device, "ID_INPUT_POINTINGSTICK"))
+		handle_pointingstick(device);
 
 	rc = 0;
 
-- 
2.17.0