From bf232e460a3530adf17da7d7f1332347b73a3d08 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 22 May 2018 17:30:31 -0700 Subject: Input: psmouse-smbus - allow to control psmouse_deactivate This seems to be Synaptics specific, as some Elan touchpads are not correctly switching to SMBus if we call deactivate before switching to SMBus on cold boot and on resume. Tested with the T480s Signed-off-by: Benjamin Tissoires Acked-by: KT Liao Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 2 +- drivers/input/mouse/psmouse-smbus.c | 13 ++++++++++--- drivers/input/mouse/psmouse.h | 1 + drivers/input/mouse/synaptics.c | 2 +- 4 files changed, 13 insertions(+), 5 deletions(-) (limited to 'drivers/input') diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 07e40a58e66c..fb4d902c4403 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1774,7 +1774,7 @@ static int elantech_create_smbus(struct psmouse *psmouse, if (info->has_trackpoint) smbus_board.properties = i2c_properties; - return psmouse_smbus_init(psmouse, &smbus_board, NULL, 0, + return psmouse_smbus_init(psmouse, &smbus_board, NULL, 0, false, leave_breadcrumbs); } diff --git a/drivers/input/mouse/psmouse-smbus.c b/drivers/input/mouse/psmouse-smbus.c index c8a3b1f35ce3..852d4b486ddb 100644 --- a/drivers/input/mouse/psmouse-smbus.c +++ b/drivers/input/mouse/psmouse-smbus.c @@ -23,6 +23,7 @@ struct psmouse_smbus_dev { struct i2c_client *client; struct list_head node; bool dead; + bool need_deactivate; }; static LIST_HEAD(psmouse_smbus_list); @@ -118,7 +119,10 @@ static psmouse_ret_t psmouse_smbus_process_byte(struct psmouse *psmouse) static int psmouse_smbus_reconnect(struct psmouse *psmouse) { - psmouse_deactivate(psmouse); + struct psmouse_smbus_dev *smbdev = psmouse->private; + + if (smbdev->need_deactivate) + psmouse_deactivate(psmouse); return 0; } @@ -225,6 +229,7 @@ void psmouse_smbus_cleanup(struct psmouse *psmouse) int psmouse_smbus_init(struct psmouse *psmouse, const struct i2c_board_info *board, const void *pdata, size_t pdata_size, + bool need_deactivate, bool leave_breadcrumbs) { struct psmouse_smbus_dev *smbdev; @@ -236,6 +241,7 @@ int psmouse_smbus_init(struct psmouse *psmouse, smbdev->psmouse = psmouse; smbdev->board = *board; + smbdev->need_deactivate = need_deactivate; if (pdata) { smbdev->board.platform_data = kmemdup(pdata, pdata_size, @@ -246,6 +252,9 @@ int psmouse_smbus_init(struct psmouse *psmouse, } } + if (need_deactivate) + psmouse_deactivate(psmouse); + psmouse->private = smbdev; psmouse->protocol_handler = psmouse_smbus_process_byte; psmouse->reconnect = psmouse_smbus_reconnect; @@ -253,8 +262,6 @@ int psmouse_smbus_init(struct psmouse *psmouse, psmouse->disconnect = psmouse_smbus_disconnect; psmouse->resync_time = 0; - psmouse_deactivate(psmouse); - mutex_lock(&psmouse_smbus_mutex); list_add_tail(&smbdev->node, &psmouse_smbus_list); mutex_unlock(&psmouse_smbus_mutex); diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h index dd4ec1f602d7..64c3a5d3fb3e 100644 --- a/drivers/input/mouse/psmouse.h +++ b/drivers/input/mouse/psmouse.h @@ -225,6 +225,7 @@ struct i2c_board_info; int psmouse_smbus_init(struct psmouse *psmouse, const struct i2c_board_info *board, const void *pdata, size_t pdata_size, + bool need_deactivate, bool leave_breadcrumbs); void psmouse_smbus_cleanup(struct psmouse *psmouse); diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 60f2c463d1cc..e3e0ef585eb6 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1748,7 +1748,7 @@ static int synaptics_create_intertouch(struct psmouse *psmouse, }; return psmouse_smbus_init(psmouse, &intertouch_board, - &pdata, sizeof(pdata), + &pdata, sizeof(pdata), true, leave_breadcrumbs); } -- cgit v1.2.3-59-g8ed1b