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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2023-10-14 02:29:57 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2023-10-14 02:59:19 +0200 |
| commit | 5030b2fe6aab37fe42d14f31842ea38be7c55c57 (patch) | |
| tree | 125acd87a794510dd5f79be0ff9a4fcc1b0c0e40 /drivers/input/mouse | |
| parent | Input: psmouse - fix fast_reconnect function for PS/2 mode (diff) | |
| download | linux-5030b2fe6aab37fe42d14f31842ea38be7c55c57.tar.xz linux-5030b2fe6aab37fe42d14f31842ea38be7c55c57.zip | |
Input: synaptics-rmi4 - handle reset delay when using SMBus trsnsport
Touch controllers need some time after receiving reset command for the
firmware to finish re-initializing and be ready to respond to commands
from the host. The driver already had handling for the post-reset delay
for I2C and SPI transports, this change adds the handling to
SMBus-connected devices.
SMBus devices are peculiar because they implement legacy PS/2
compatibility mode, so reset is actually issued by psmouse driver on the
associated serio port, after which the control is passed to the RMI4
driver with SMBus companion device.
Note that originally the delay was added to psmouse driver in
92e24e0e57f7 ("Input: psmouse - add delay when deactivating for SMBus
mode"), but that resulted in an unwanted delay in "fast" reconnect
handler for the serio port, so it was decided to revert the patch and
have the delay being handled in the RMI4 driver, similar to the other
transports.
Tested-by: Jeffery Miller <jefferymiller@google.com>
Link: https://lore.kernel.org/r/ZR1yUFJ8a9Zt606N@penguin
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/mouse')
| -rw-r--r-- | drivers/input/mouse/synaptics.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index cefc74b3b34b..22d16d80efb9 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1753,6 +1753,7 @@ static int synaptics_create_intertouch(struct psmouse *psmouse, psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); const struct rmi_device_platform_data pdata = { + .reset_delay_ms = 30, .sensor_pdata = { .sensor_type = rmi_sensor_touchpad, .axis_align.flip_y = true, |