I wish to add a new device to barebox (in fact, quite a few but lets just look at one). I am a newbie to barebox but very comfortable with C. The device is a TCA9555 GPIO expander on the I2C bus. The device is probably covered by the linux driver gpio_pca953x.c so I will go ahead and just add the pca953x device/driver pair or now. I am trying to sort out the process of adding a driver at the moment and not so much the exact details of the device/driver. So the steps I took to do this was: 1. Copy the gpio_pca953x.c file to the barebox driver/gpio directory 2. Copy the pca953x.h file to the barebox include directory. 3. I then edited the .c file to fall in line with the barebox format (looked at some other files as examples) 4. I edited the kConfig in the barebox/drivers/gpio directory to add the option to select this device 5. I edited the makefile to include this file. 6. Changed the board.c file to load this device on the i2c bus Then I used "ptxdist menuconfig barebox" to enable this device which is now listed in the menu under drivers/config as expected. Did the "ptxdist go" and checked the output BUT the file is not compiled. I sort of expected it to try and compile and possible give a load of errors?.but it did not even try to compile. Clearly I am missing a step that is so obvious that it is not mentioned anywhere. Can someone please point me in the right direction? Thanks in advance _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
