linux/drivers/input
Arnd Bergmann 4eef6cbfcc Input: eeti_ts: pass gpio value instead of IRQ
The EETI touchscreen asserts its IRQ line as soon as it has data in its
internal buffers. The line is automatically deasserted once all data has
been read via I2C. Hence, the driver has to monitor the GPIO line and
cannot simply rely on the interrupt handler reception.

In the current implementation of the driver, irq_to_gpio() is used to
determine the GPIO number from the i2c_client's IRQ value.

As irq_to_gpio() is not available on all platforms, this patch changes
this and makes the driver ignore the passed in IRQ. Instead, a GPIO is
added to the platform_data struct and gpio_to_irq is used to derive the
IRQ from that GPIO. If this fails, bail out. The driver is only able to
work in environments where the touchscreen GPIO can be mapped to an
IRQ.

Without this patch, building raumfeld_defconfig results in:

drivers/input/touchscreen/eeti_ts.c: In function 'eeti_ts_irq_active':
drivers/input/touchscreen/eeti_ts.c:65:2: error: implicit declaration of function 'irq_to_gpio' [-Werror=implicit-function-declaration]

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org (v3.2+)
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Sven Neumann <s.neumann@raumfeld.com>
Cc: linux-input@vger.kernel.org
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-08-09 15:16:41 +02:00
..
gameport Input: use module_pci_driver 2012-04-21 23:48:58 -07:00
joystick Merge branch 'next' into for-linus 2012-07-24 22:43:04 -07:00
keyboard Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2012-07-26 12:59:53 -07:00
misc MFD bits for the 3.6 merge window. 2012-07-30 12:41:17 -07:00
mouse Merge branch 'next' into for-linus 2012-07-29 22:34:47 -07:00
serio input/serio/hp_sdc.c: remove IRQF_SAMPLE_RANDOM which is now a no-op 2012-07-19 10:38:34 -04:00
tablet Input: wacom - add support to Cintiq 22HD 2012-07-24 23:55:10 -07:00
touchscreen Input: eeti_ts: pass gpio value instead of IRQ 2012-08-09 15:16:41 +02:00
apm-power.c
evbug.c
evdev.c Input: evdev - properly handle read/write with count 0 2012-05-02 00:23:58 -07:00
ff-core.c
ff-memless.c Input: ff-memless - fix a couple min_t() casts 2012-07-07 18:20:12 -07:00
input-compat.c
input-compat.h
input-mt.c Input: MT - fix null pointer warning 2012-06-04 16:33:34 +02:00
input-polldev.c
input.c
joydev.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
Kconfig Input: matrix-keymap - uninline and prepare for device tree support 2012-05-10 22:38:47 -07:00
Makefile Input: matrix-keymap - uninline and prepare for device tree support 2012-05-10 22:38:47 -07:00
matrix-keymap.c Input: matrix-keymap - fix building keymaps 2012-05-24 01:12:20 -07:00
mousedev.c
sparse-keymap.c