[PATCH] Input: synaptics - add quirk for Daffodil DC253D touchpad
From: Ashwin Gundarapu
Date: Fri May 22 2026 - 11:18:25 EST
On the Daffodil DC253D laptop, the touchpad is incorrectly detected as
a clickpad, causing the right button to be missing. Add a DMI quirk
to clear the CLICKPAD bit for this device.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2153983
Signed-off-by: Ashwin Gundarapu <linuxuser509@xxxxxxxxxxx>
---
drivers/input/mouse/synaptics.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 26071128f43a..4ca85fb4ab70 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -534,9 +534,16 @@ static int synaptics_invert_y(int y)
* Apply quirk(s) if the hardware matches
*/
static void synaptics_apply_quirks(struct psmouse *psmouse,
- struct synaptics_device_info *info)
+ struct synaptics_device_info *info)
{
- int i;
+ int i;
+
+ /* Daffodil DC253D has a physical right button */
+ if (dmi_match(DMI_SYS_VENDOR, "Daffodil Computers Ltd.") &&
+ dmi_match(DMI_PRODUCT_NAME, "DC253D")) {
+ info->ext_cap_0c &= ~BIT(20); /* Clear CLICKPAD bit */
+ psmouse_info(psmouse, "Force right button on Daffodil DC253D\n");
+ }
for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
if (!psmouse_matches_pnp_id(psmouse,
--
2.43.0