The sysfs attribute show method (mxt_object_show) is limited to show
object information up to (PAGE_SIZE - 1) bytes. We need a way to get
the complete information of all objects. The object information can
be obtained from <debugfs-mount>/atmel_mxt_ts/object.
Change-Id: I92fff75b37ba0cba19b137460c2144fe847c6343
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
The mXT1386E touch controller supports a new signal processing object
PROCI_SHIELDLESS_T56. This object is both readable and writable.
Change-Id: I418df8c3f05dc5265a1e7581d9c7e654a9fd3c4c
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Add support for dynamic configuration data update if the target can
support more than one Atmel chip. Platform data contains an array of
supported config data along with family ID, variant ID and firmware
version. Driver searches for matching family ID, variant ID and
firmware version, and uses the corresponding config data to program.
Change-Id: I684da4bdef56a3445acab3bb8fe47dd5279bebe5
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Currently during boot, and every suspend and resume, we call
regulator_set_optimum_mode on every touchscreen regulator. However,
some regulators don't support this function, and this will cause
set_optimum_mode to print an error when this occurs. Correct this by
checking if it is valid to call set_optimum_mode on a given regulator
before doing so.
Change-Id: I71f0f14b16d9f333bd409d9d5150f11a7ccd8fdf
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Provides flexibility to specify max/min x and y coordinates from
platform data. Useful in cases where the TS controller reports
coordinates at an offset from the predefined min/max values
(0 and 4096 respectively).
Change-Id: Ia93a8940078aa5960d1d900ac56b0b3354c82e40
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Keyarray(T15) object is used for handling capactive keys.
It can handle 32 keys and the keys supported are passed
from platform data as key_codes.
Change-Id: Iac589afb59e8ff69b6e1eb86bafdc0b5382c3edd
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Cleanup and release the gpio pins for irq and reset
when the module is removed.
Change-Id: Id264411a786c7490506271bef2d6f7e55e7d07fb
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Correct event where touch is released but nonzero pressure is
reported by controller. If there is no touch, pressure should
be reported to Android as zero.
Change-Id: I1865e69faa57bf5cf34325622c3b7170ceaf4654
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Possibility of the IRQ being disabled twice if IRQ hander and the
missed interrupt check execute simultaneously. This can case the IRQ
to be disabled forever.
Change-Id: If1d1cac138727c866dcd99b882b778d4b31b1774
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Update the object list to include new objects, add unique identifiers
so we can distinguish between old & new generation of the same object.
Change-Id: I6e0336e3db1deed1072b5d0c7ba944659ad85b5a
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Support mxt224E controller which requires both digital and analog
regulator power.
Change-Id: I2717fd26b4790cf1b6160f09e71611537b47ea3c
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Atmel mxt1386 touch controller has the touch pressure information but
the current driver atmel_mxt_ts does not expose it to the user space.
This patch makes the driver report the touch pressure information to
user space.
ChangeLog:
v2: fixed indentation as commented by Wanlong Gao
v3: added signed-off-by
Change-Id: Ib30cca618d964793e026a675823d9ed8d4e912b9
Signed-off-by: Yufeng Shen <miletus@chromium.org>
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Use ABS_MT_PRESSURE to report pressure instead of relying
on ABS_MT_TOUCH_MAJOR and ABS_MT_WIDTH_MAJOR events.
Change-Id: I3954e729ad48a28970b470df8c86c3a22ea56bd9
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Opensource driver atmel_mxt_ts has the platform data
structure name as atmel_maxtouch. Avoid name conflict
by renaming atmel_maxtouch driver's platform data to
maxtouch_platform_data.
Change-Id: I4bf3ed83e3eab55c4464de365c6009965da73744
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Report BTN_TOUCH event along with other input
events.
Change-Id: I1ba414224f978c13e24c382b5c0fd57f82f66577
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Fix issues such as comparing an unsigned integer against 0 and
unnecessary NULL checking.
Change-Id: Ib70b083925229ed9ec5b940e0fb0e80e9b83c960
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Fix out-of-order error handling of several error cases in mxt_probe.
Make sure allocated memory is freed in mxt_initialize when an error
occurs.
Change-Id: I4331a71263b62ff6bdeaafbe6881e591b09d2ffc
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Sysfs attribute show methods are always passed a buffer of length
PAGE_SIZE. To keep from overwriting this buffer and causing havoc, use
snprintf() to guarantee we never write more than the buffer can hold.
In addition, at least for my touchscreen, the number and size of objects
was far too big to fit in a single 4K page. Therefore, this patch also
trims some redundant framing text to leave more room for actual data.
Change-Id: If771d66940d9948618b419ff7f0e510a07821274
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Nick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Try up to 3 times for each I2C read/write with 25ms delay between retries.
This is especially needed when writing to T7 to wake up the controller
from deep sleep mode.
Read/write T7 object in block, instead of one byte at a time.
Change-Id: Ibca9cdbf38c5726af5ff4ee9f0ce9ea6f0d183ee
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Remove blen, tchthr, x_line, y_line, orient and voltage from platform
data to not to overwrite the config data with these values. Update
config array to have the proper values.
Turn on i2c_pull_up in platform data.
Change-Id: Ic926e96886f52cea3dad29e9a44559b26c717259
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
Enable the interrupt only when no work is to be scheduled.
Change-Id: I006688b73331428850936f0cfea14c10f41fcd52
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Replace deprecated function strlen with it's safer
counter part strnlen. Return error code from probe
when cyttsp_initialize() fails.
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
The cancel-work construct is not needed as the new IRQ is
generated only after the old work has completed execution.
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
The delay before the chip can be accessed after reset varies between different
chips in maXTouch family. Waiting for 200ms and then monitoring the CHG (chip
is ready when the line is low) is guaranteed to work with all chips.
v4: Adjust delay depending on the family ID of the chip. Also add a readback
of command register after backup is issued, to make sure we are not
proceeding
too fast there.
v3: Add a check for NULL read_chg() function, and add the read_chg() to platform
files using this driver (currently only mach-goni.c)
v2: At Dmitry's suggestion, add a timeout so we are not stuck looping
endlessly in case the CHG is not going low.
Signed-off-by: Iiro Valkonen <iiro.valkonen@atmel.com>
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
This change prevents the resume handler being called in the
regular resume callback. It should get called only during late
resume. This can cause the device to wake up earlier than expected.
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
