Thread (37 messages) 37 messages, 6 authors, 2006-11-01

Re: [PATCH 1/2] Add MPC52xx Interrupt controller support for ARCH=powerpc

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2006-10-31 07:05:20

On Tue, 2006-10-31 at 07:59 +0100, Sylvain Munaut wrote:
* struct mpc52xx_mmap_ctl;
* struct mpc52xx_sdram;

Not really used any where that I can see/remember. Except for
find_end_of_memory ...
It should however be used in several place in the future ... (sleep support
would need sdram iirc, ...).

But can be removed for now if it's annoying to have them there ...
Nah, keep them in. It's not like it was bloating the binary anyway :)
* struct mpc52xx_intr;

Was used before in platform support code to set the IRQ type of external
IRQ (level/irq) ...
but that can be done with set_irq_type. So can be safetly moved to a
local mpc52xx_pic.h
Yup.
* struct mpc52xx_rtc;

Was used before in some common code. When the bootloader didn't pass the
bus frequency,
we computed it and the rtc was used to do that. Now, with device tree,
no need for
that anymore. So can be safely removed.
Sounds good.
* struct mpc52xx_gpio;
* struct mpc52xx_gpio_wkup;

Port config (pin multiplexing) is in those registers so they should stay
there. This is used
by several driver and platform code. Beside custom driver could use gpio
for different
purpose ...
Yup, though beware of concurrent access to GPIO registers... we might
want a bit of common code with a spinlock in it to "wrap" accesses to
them.
It could be placed in a include/asm-powerpc/mpc52xx_gpio.h but that
would just make
one more file in include/asm-powerpc so it doesn't make much sens imho.
It should
just stay there.
Yeah, leave it there.
* struct mpc52xx_xlb;
* struct mpc52xx_cdm;
* struct mpc52xx_sdma;

Used at several place and should really stay there.
No need to be too anal about removing things from .h files.

Ben.
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