Hi Dmitry,
thanks for the review
Am Dienstag, 6. Dezember 2011, 06:56:37 schrieb Dmitry Torokhov:
> On Mon, Dec 05, 2011 at 09:05:30PM +0100, Heiko Stübner wrote:
> > Some displays from AUO have a so called in-cell touchscreen, meaning it
> > is built directly into the display unit.
> >
> > Touchdata is gathered through PIXCIR Tango-ICs and processed in an
> > Atmel ATmega168P with custom firmware. Communication between the host
> > system and ATmega is done via I2C.
> >
> > Devices using this touch solution include the Dell Streak5 and the family
> > of Qisda ebook readers.
> >
> > The driver reports single- and multi-touch events including touch area
> > values.
> >
> > Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
> > ---
> > changes since v1: address comments from Christoph Fritz
> > (wrong type for error checks, wrong call to input_free_device)
> >
> > drivers/input/touchscreen/Kconfig | 14 +
> > drivers/input/touchscreen/Makefile | 1 +
> > drivers/input/touchscreen/auo-pixcir-ts.c | 656
> > +++++++++++++++++++++++++++++ include/linux/input/auo-pixcir-ts.h
> > | 57 +++
> > 4 files changed, 728 insertions(+), 0 deletions(-)
> > create mode 100644 drivers/input/touchscreen/auo-pixcir-ts.c
> > create mode 100644 include/linux/input/auo-pixcir-ts.h
> >
[ ... small corrections, thanks for finding them ... ]
> > +
> > + for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) {
> > + if (point[i].coord_x > 0 || point[i].coord_y > 0) {
> > + input_report_abs(ts->input, ABS_MT_POSITION_X,
> > + point[i].coord_x);
> > + input_report_abs(ts->input, ABS_MT_POSITION_Y,
> > + point[i].coord_y);
> > + input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR,
> > + point[i].area_major);
> > + input_report_abs(ts->input, ABS_MT_TOUCH_MINOR,
> > + point[i].area_minor);
> > + input_report_abs(ts->input, ABS_MT_ORIENTATION,
> > + point[i].orientation);
> > + input_mt_sync(ts->input);
>
> Is there a way to track the contacts and switch to protocol B by any
> chance?
I'm not sure, but will check how the device handles changing the number of
touching fingers and if it would be possible to switch.
> > +
> > + /* use first finger as source for singletouch */
> > + if (fingers == 0)
> > + abs = i;
> > +
> > + /* number of touch points could also be queried
> > + * via i2c but would require an additional call
> > + */
> > + fingers++;
> > + }
> > + }
[ ... more small stuff for me to fix ... ]
> > +
> > + ret = input_register_device(input_dev);
> > + if (ret) {
> > + dev_err(&client->dev, "could not register input device\n");
> > + goto err_input_register;
> > + }
> > +
> > + input_set_drvdata(ts->input, ts);
>
> Just do this earlier and then auo_pixcir_stop() is enough, you won't
> need to call auo_pixcir_int_enable() before registering IRQ.
Just to be sure, you mean moving the input_set_drvdata before the irq-
registration?
> > +
> > + i2c_set_clientdata(client, ts);
> > +
> > + return 0;
> > +
[ ... and still more small stuff ]
Thanks
Heiko
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