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Hi all,
I am trying to use mpc860 as i2c-SLAVE. Kernel, I am using is
Linux-2.4.4, which I can't change due to some reasons.
I am able to do I2C read/write operations on mpc8xx-i2c slave only after
re-insmoding my driver module (i2c-algo-8xx.c, and adapter layer drive,
code I took form i2c-rpx/r360.c ).
The issue I am facing is when I insmod i2c-driver on fresh Linux boot,
any i2c-mpc860 as slave read/write operation gives me busy status (which
is for Rx BD not available) in Controller's i2c Event Registers. When I
get busy status I have to do force_close() and re-init of bd, then only
busy status goes off.
I tried calling cpm_iic_init(); twice while __init but with no change in
busy status.
After some initial try, i2c slave write works but i2c read gives no data
to the master. After re-insmoding driver, read/write works with some
times (1 out of 15 times) i2c-read failing.
But still I can't understand why busy is coming....
Any help or suggestions are highly appreciated.
thanks,
Ankur Maheshwari
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