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Input: synaptics - warn the users when there is a better mode

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The Synaptics touchpads are now either using i2c-hid or rmi-smbus.
Warn the users if they are missing the rmi-smbus modules and have no
chance of reporting correct data.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Benjamin Tissoires 2017-05-26 16:21:36 -07:00 committed by Dmitry Torokhov
parent f4947d79a7
commit f4101ff87d
1 changed files with 15 additions and 7 deletions
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22
drivers/input/mouse/synaptics.c
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@ -176,6 +176,12 @@ static const char * const smbus_pnp_ids[] = {
NULL
};
static const char * const forcepad_pnp_ids[] = {
"SYN300D",
"SYN3014",
NULL
};
/*
* Send a command to the synpatics touchpad by special commands
*/
@ -482,13 +488,6 @@ static const struct min_max_quirk min_max_pnpid_table[] = {
{ }
};
/* This list has been kindly provided by Synaptics. */
static const char * const forcepad_pnp_ids[] = {
"SYN300D",
"SYN3014",
NULL
};
/*****************************************************************************
* Synaptics communications functions
****************************************************************************/
@ -1813,6 +1812,15 @@ int synaptics_init(struct psmouse *psmouse)
}
if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
!IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
/* Forcepads need F21, which is not ready */
!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
psmouse_warn(psmouse,
"The touchpad can support a better bus than the too old PS/2 protocol. "
"Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
}
error = synaptics_setup_intertouch(psmouse, &info, true);
if (!error)
return PSMOUSE_SYNAPTICS_SMBUS;