[RFC] Option to disable mapping genrtc calls to ppc_md calls

Mark A. Greer mgreer at mvista.com
Tue Jan 18 08:10:00 EST 2005


I have a platform with an i2c rtc chip.  Since much of the code for an 
rtc driver is already in drivers/char/genrtc.c, I would like to reuse 
that code and directly implement get_rtc_time(), et. al. in the rtc 
driver.  The problem is that include/asm-ppc/rtc.h assumes that 
get_rtc_time(), et. al. should be mapped to ppc_md.get_rtc_time() et. 
al.  To work around this, I made an option to turn off that assumption.  
The patch is included.

There are 2 reasons to not use the ppc_md.get_rtc_time() et. al. interfaces:
1) They are called before the i2c driver is initialized and even loaded 
if its a module.
2) Its ppc-specific.  Implementing get_rtc_time() et. al. directly makes 
it generic across all architectures.

Is there a better way to do this?

Comments welcome.

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