diff options
| author | Daniel Kurtz <djkurtz@chromium.org> | 2013-03-07 19:43:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-03-08 16:03:29 -0800 |
| commit | 22dfab7fd7fd5a8a2c5556ca0a8fd35fc959abc8 (patch) | |
| tree | 009b5cdf5cba8e20266861989d38bc777ef845f7 /include/linux/i2c | |
| parent | 67a865a40b46d4e5d2afd154303b10220202140f (diff) | |
Input: atmel_mxt_ts - Support for touchpad variant
This same driver can be used by atmel based touchscreens and touchpads
(buttonpads). Platform data may specify a device is a touchpad
using the is_tp flag.
This will cause the driver to perform some touchpad specific
initializations, such as:
* register input device name "Atmel maXTouch Touchpad" instead of
Touchscreen.
* register BTN_LEFT & BTN_TOOL_* event types.
* register axis resolution (as a fixed constant, for now)
* register BUTTONPAD property
* process GPIO buttons using reportid T19
Input event GPIO mapping is done by the platform data key_map array.
key_map[x] should contain the KEY or BTN code to send when processing
GPIOx from T19. To specify a GPIO as not an input source, populate
with KEY_RESERVED, or 0.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/i2c')
| -rw-r--r-- | include/linux/i2c/atmel_mxt_ts.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index f027f7a63511..99e379b74398 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -15,6 +15,9 @@ #include <linux/types.h> +/* For key_map array */ +#define MXT_NUM_GPIO 4 + /* Orient */ #define MXT_NORMAL 0x0 #define MXT_DIAGONAL 0x1 @@ -39,6 +42,8 @@ struct mxt_platform_data { unsigned int voltage; unsigned char orient; unsigned long irqflags; + bool is_tp; + const unsigned int key_map[MXT_NUM_GPIO]; }; #endif /* __LINUX_ATMEL_MXT_TS_H */ |