Converting vrfb.c

[Tomi Valkeinen <tomi.valkeinen@xxxxxx>]

Hi,

I'm a bit at loss how to deal with drivers/video/omap2/vrfb.c.

VRFB is part of the SDRAM controller on OMAP2 and OMAP3. vrfb.c uses the
following functions from sdrc.h:

omap2_sms_write_rot_control();
omap2_sms_write_rot_size();
omap2_sms_write_rot_physical_ba();

There are no other dependencies to the sdrc.c.

Those functions are quite simple:

void omap2_sms_write_rot_control(u32 val, unsigned ctx)
{
	sms_write_reg(val, SMS_ROT_CONTROL(ctx));
}

void omap2_sms_write_rot_size(u32 val, unsigned ctx)
{
	sms_write_reg(val, SMS_ROT_SIZE(ctx));
}

void omap2_sms_write_rot_physical_ba(u32 val, unsigned ctx)
{
	sms_write_reg(val, SMS_ROT_PHYSICAL_BA(ctx));
}

vrfb.c is in turn used by omapfb and omap v4l2 driver.


So... Should I just remove the sdrc.h dependency and make vrfb.c ioremap
those SMS registers itself? Those three registers are VRFB specific, so
they are not used by anyone else. In that case I'd need to pass the SMS
base address to vrfb.c somehow.

Or should I have some kind of platform data passed to vrfb.c, which
contains func pointers to the above three functions?

Or should vrfb.c be moved into mach-omap2/? But then how would omapfb
call it? Passing vrfb functions as pointers in omapfb platform data?

 Tomi

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