Subject:
RE: [nanogui] touchscreen calibration
From:
Henry Chea ####@####.####
Date:
13 Mar 2002 10:21:26 -0000
Message-Id: <ED968F412990DE4080ADEC412897784907C6A9@gotz-fs1.semcon.se>
Hi Alex,
I am modifying mou_ads.c, and I have some questions for you.
In mou_ads.c I am editing PD_SetCalibration() because it seems there is no
SetCalibration() function in this file.
In PD_SetCalibration() I have added the following code:
if(mousedev.mode == MWMOUSEMODE_RAW) {
ioctl(pd_fd, SHOULD_KERNEL_SCALE_DATA, NO);
} else {
ioctl(pd_fd, SHOULD_KERNEL_SCALE_DATA, YES);
ioctl(pd_fd, 10, mousedev.xmin); //sets min x
ioctl(pd_fd, 3, mousedev.xmax); //sets max x
ioctl(pd_fd, 11, mousedev.ymin); //sets min y
ioctl(pd_fd, 4, mousedev.ymax); //sets max y
ioctl(pd_fd, SET_Z_THRESHOLD, mousedev.zthresh);
}
As you can see, there are some values I still have to edit. For reference,
here is what the ioctl arguments look like for the ADS Graphicsmaster
platform (this is taken from linux/drivers/char/ucb1200_ts.c which might be
specific to my platform):
case 3:
raw_max_x = arg;
break;
case 4:
raw_max_y = arg;
break;
case 5:
res_x = arg;
break;
case 6:
res_y = arg;
break;
case 10:
raw_min_x = arg;
break;
case 11:
raw_min_y = arg;
break;
case 12:
/* New attribute for portrait modes */
xyswap = arg;
/* Allen Add */
case 13: /* 0 = Enable calibration ; 1 = Calibration OK */
cal_ok = arg;
case 14: /* Clear all buffer data */
ts_clear();
break;
case 15: /* X axis reversed setting */
x_rev = arg;
break;
case 16: /* Y axis reversed setting */
y_rev = arg;
break;
case 17: /* Clear all buffer data */
print_par();
break;
Looking at this, I see no cases for "SHOULD_KERNEL_SCALE_DATA" and
"SET_Z_THRESHOLD". Should I remove the ioctl lines from my code that deal
with these two? Also, is "MWMOUSEMODE_RAW" something I have to edit?
Cheers,
//Henry Chea
Semcon Sweden AB
-----Original Message-----
From: Alex Holden
To: Henry Chea
Cc: ####@####.####
Sent: 3/11/2002 8:13 PM
Subject: Re: [nanogui] touchscreen calibration
Henry Chea wrote:
> I have no idea what needs to be done to fix the ADS platform for use
with
> the new calibration functionality.
If you want to have a go at this, apply the attached patch to a recent
snapshot of my tree, and fill in the contents of the SetCalibration()
function in src/drivers/mou_ads.c
What it should do is something like (in pseudocode):
if(mousedev.mode == MWMOUSEMODE_RAW) {
ioctl(pd_fd, SHOULD_KERNEL_SCALE_DATA, NO);
} else {
ioctl(pd_fd, SHOULD_KERNEL_SCALE_DATA, YES);
ioctl(pd_fd, SET_MIN_X, mousedev.xmin);
ioctl(pd_fd, SET_MAX_X, mousedev.xmax);
ioctl(pd_fd, SET_MIN_Y, mousedev.ymin);
ioctl(pd_fd, SET_MAX_Y, mousedev.ymax);
ioctl(pd_fd, SET_Z_THRESHOLD, mousedev.zthresh);
}
--
------------ Alex Holden - http://www.linuxhacker.org ------------
If it doesn't work, you're not hitting it with a big enough hammer
<<touchscreen.patch>>
