This is a note to let you know that I've just added the patch titled
HID: asus: Add report_size to struct asus_touchpad_info
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
hid-asus-add-report_size-to-struct-asus_touchpad_inf.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2f00af1db607913086c006b5ef865c60c642f4e8
Author: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Tue Apr 28 16:22:52 2020 +0200
HID: asus: Add report_size to struct asus_touchpad_info
[ Upstream commit a61f9e428bf092349fdfebeee37ddefedd3f0fd1 ]
Add the report_size to struct asus_touchpad_info instead of calculating it.
This is a preparation patch for adding support for the multi-touch touchpad
found on the Medion Akoya E1239T's keyboard-dock, which uses the same
custom multi-touch protocol as the Asus keyboard-docks (same chipset
vendor, Integrated Technology Express / ITE).
The only difference in that the Akoya E1239T keyboard-dock's input-reports
have a 5 byte footer instead of a 1 byte footer, which requires the
report_size to be configurable per touchpad-model.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Stable-dep-of: 4ab3a086d10e ("HID: asus: use spinlock to safely schedule workers")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 5ea4d678b7413..4d877b4581b40 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -103,6 +103,7 @@ struct asus_touchpad_info {
int res_y;
int contact_size;
int max_contacts;
+ int report_size;
};
struct asus_drvdata {
@@ -127,6 +128,7 @@ static const struct asus_touchpad_info asus_i2c_tp = {
.max_y = 1758,
.contact_size = 5,
.max_contacts = 5,
+ .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
};
static const struct asus_touchpad_info asus_t100ta_tp = {
@@ -136,6 +138,7 @@ static const struct asus_touchpad_info asus_t100ta_tp = {
.res_y = 27, /* units/mm */
.contact_size = 5,
.max_contacts = 5,
+ .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
};
static const struct asus_touchpad_info asus_t100ha_tp = {
@@ -145,6 +148,7 @@ static const struct asus_touchpad_info asus_t100ha_tp = {
.res_y = 29, /* units/mm */
.contact_size = 5,
.max_contacts = 5,
+ .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
};
static const struct asus_touchpad_info asus_t200ta_tp = {
@@ -154,6 +158,7 @@ static const struct asus_touchpad_info asus_t200ta_tp = {
.res_y = 28, /* units/mm */
.contact_size = 5,
.max_contacts = 5,
+ .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
};
static const struct asus_touchpad_info asus_t100chi_tp = {
@@ -163,6 +168,7 @@ static const struct asus_touchpad_info asus_t100chi_tp = {
.res_y = 29, /* units/mm */
.contact_size = 3,
.max_contacts = 4,
+ .report_size = 15 /* 2 byte header + 3 * 4 + 1 byte footer */,
};
static void asus_report_contact_down(struct asus_drvdata *drvdat,
@@ -230,7 +236,7 @@ static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
int i, toolType = MT_TOOL_FINGER;
u8 *contactData = data + 2;
- if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts)
+ if (size != drvdat->tp->report_size)
return 0;
for (i = 0; i < drvdat->tp->max_contacts; i++) {
