Hi, I am new to linux device driver development. I have to develop a spi bitbanging driver for MPC837xERDB board. So far I have found that linux kernel already has support for bitbanging over gpio(I am using linux kernel 2.6.35). Now I am confused that how I am going to configure SPI pins as GPIO and what API to use to write my driver. I searched over internet a lot for a sample SPI bitbang driver but unable to do so. Can anyone provide me some sample bitbang driver explaning how to use the spi_bitbang.c and spi_gpio.c. Do I need to change the mpc8377_rdb.dts file to register spi pins as gpio?
Thanks in advance Ravi Gupta
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