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Subject[PATCH v2 9/9] [NEEDS F21] Input: synaptics - switch forcepad devices over to SMbus access
Date
Synaptics "forcedpad" devices use address 0x20 instead of 0x2c.
Unfortunately the fact that the device is a forcepad is not exported
through PS/2 interface, so we need a bit of DMI magic to switch over to the
correct address.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/mouse/synaptics.c | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 26794f06ad9c..1b9ae3a7f915 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -171,6 +171,13 @@ static const char * const smbus_pnp_ids[] = {
NULL
};

+/* This list has been kindly provided by Synaptics. */
+static const char * const forcepad_pnp_ids[] = {
+ "SYN300D",
+ "SYN3014",
+ NULL
+};
+
/*
* Send a command to the synpatics touchpad by special commands
*/
@@ -493,13 +500,6 @@ 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
****************************************************************************/
@@ -1721,11 +1721,14 @@ static int synaptics_create_intertouch(struct psmouse *psmouse,
!!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
},
};
- const struct i2c_board_info intertouch_board = {
+ struct i2c_board_info intertouch_board = {
I2C_BOARD_INFO("rmi4_smbus", 0x2c),
.flags = I2C_CLIENT_HOST_NOTIFY,
};

+ if (psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
+ intertouch_board.addr = 0x20;
+
return psmouse_smbus_init(psmouse, &intertouch_board,
&pdata, sizeof(pdata),
leave_breadcrumbs);
@@ -1746,8 +1749,10 @@ static int synaptics_setup_intertouch(struct psmouse *psmouse,

if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
- !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids))
+ !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids) &&
+ !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
return -ENXIO;
+ }
}

psmouse_info(psmouse, "Trying to set up SMBus access\n");
--
2.12.0.246.ga2ecc84866-goog
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