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| author |   Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2018-05-22 17:28:23 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-05-23 16:49:22 -0700 |
| commit | 21c48dbde0944e3d52468008321900af3bdafcf1 (patch) | |
| tree | 076300cb80f45799824b1f550fe04bdf9a3c8983 /drivers/input/mouse/elantech.h | |
| parent | Input: elantech - query the resolution in query_info (diff) | |
| download | linux-dev-21c48dbde0944e3d52468008321900af3bdafcf1.tar.xz linux-dev-21c48dbde0944e3d52468008321900af3bdafcf1.zip | |
Input: elantech - add support for SMBus devices
Many of the Elantech devices are connected through PS/2 and a different
bus (SMBus or plain I2C).
To not break any existing device, we only enable SMBus based
on a module parameter. If some laptops require the quirk to
be set, we will have to rely on a list of PNPIds or MDI matching
to individually expose those hardware over SMBus.
the parameter mentioned above is elantech_smbus from the psmouse
module.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: KT Liao <kt.liao@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/mouse/elantech.h')
| -rw-r--r-- | drivers/input/mouse/elantech.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index 851df4ce6232..f9b1c485e8d9 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -107,6 +107,15 @@ #define ETP_WEIGHT_VALUE 5 /* + * Bus information on 3rd byte of query ETP_RESOLUTION_QUERY(0x04) + */ +#define ETP_BUS_PS2_ONLY 0 +#define ETP_BUS_SMB_ALERT_ONLY 1 +#define ETP_BUS_SMB_HST_NTFY_ONLY 2 +#define ETP_BUS_PS2_SMB_ALERT 3 +#define ETP_BUS_PS2_SMB_HST_NTFY 4 + +/* * The base position for one finger, v4 hardware */ struct finger_pos { @@ -122,6 +131,7 @@ struct elantech_device_info { unsigned int fw_version; unsigned int x_res; unsigned int y_res; + unsigned int bus; bool paritycheck; bool jumpy_cursor; bool reports_pressure; @@ -156,6 +166,7 @@ struct elantech_data { #ifdef CONFIG_MOUSE_PS2_ELANTECH int elantech_detect(struct psmouse *psmouse, bool set_properties); +int elantech_init_ps2(struct psmouse *psmouse); int elantech_init(struct psmouse *psmouse); #else static inline int elantech_detect(struct psmouse *psmouse, bool set_properties) @@ -166,6 +177,19 @@ static inline int elantech_init(struct psmouse *psmouse) { return -ENOSYS; } +static inline int elantech_init_ps2(struct psmouse *psmouse) +{ + return -ENOSYS; +} #endif /* CONFIG_MOUSE_PS2_ELANTECH */ +#if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS) +int elantech_init_smbus(struct psmouse *psmouse); +#else +static inline int elantech_init_smbus(struct psmouse *psmouse) +{ + return -ENOSYS; +} +#endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */ + #endif |