TSC2102 Linux driver
This page details the installation and the usage of the Linux drivers for the TSC210x touchscreen & sound chip. Sound (ALSA) specific part can be found here.
Contents
Driver Installation
Drivers are now installed by default in standard Armadeus rootfs. Following instructions are only given as references or if you want to remove these drivers from your configuration.
$ make linux26-menuconfig
Device Drivers --->
Input device support --->
<*> Event interface
...
[*] Touchscreens --->
<M> TSC 2102 based touchscreens
...
SPI support --->
<M> Freescale iMX SPI controller
--- TSC2102 codec support
...
<M> Hardware Monitoring support
$ make
Then reflash your Linux kernel and your Rootfs...
Architecture
| Touchscreen (tsc2102_ts.ko) | HWmon | ALSA |
|---|---|---|
| TSC2102 Main driver (tsc2102.ko) | ||
| Linux API | ||
Usage
- load all the needed drivers:
# modprobe tsc2102_ts TI TSC2102 driver initializing input: TSC2102 Touchscreen as /class/input/input0 TSC2102 touchscreen driver initialized
Touchscreen
Before to be used, the touchscreen has to be at least one time calibrated:
# ts_calibrate
Then it can be tested with:
# ts_test
If it does not work you can quickly check driver fonctionnality, touch the screen and check that tsc2102 interrupts count is increasing:
# cat /proc/interrupts
CPU0
26: 0 MPU IMX-uart
29: 17 MPU IMX-uart
30: 22 MPU IMX-uart
35: 12 MPU imx-mmc
39: 14 MPU I2C_IMX
40: 16 MPU imx-spi.2
41: 0 MPU imx-spi.1
59: 3682 MPU i.MX Timer Tick
60: 0 MPU DMA
61: 0 MPU DMA
110: 0 GPIO eth0
168: 0 GPIO tsc2102 <<<<--------
Err: 0
#
Further informations concerning the tslib can be found here: Tslib configuration
Audio
play sounds through ALSA interface
Miscelleanous
- get temperature and voltage with hwmon (Hardware Monitoring) interface. For example:
# modprobe hwmon # cat /sys/class/hwmon/hwmon0/device/temp1_input -- result in m°C
