Subject: [PATCH 1/3] ARM: mmp: add sram allocator

From: [email-masked] (Tony Lindgren)
Date: Fri, 7 Oct 2011 12:06:54 -0700

* Haojian Zhuang <[email-masked]> [110815 01:57]:
> On Mon, Aug 15, 2011 at 5:09 PM, Jean-Christophe PLAGNIOL-VILLARD
> <[email-masked]> wrote:
> > On 10:59 Mon 15 Aug ? ? , Arnd Bergmann wrote:
> >> On Monday 15 August 2011 11:09:52 Leo Yan wrote:
> >> > On mmp platform, there have two sram banks:
> >> > audio sram and internal sram. The audio sram is mainly for audio;
> >> > the internal sram is for video, wtm and power management.
> >> > So add the sram allocator using genalloc to manage them.
> >> >
> >> > Every sram bank will register its own platform device
> >> > info, after the sram allocator create the generic pool
> >> > for the sram bank, the user module can use the pool's
> >> > name to get the pool handler; then it can use the handler
> >> > to alloc/free memory with genalloc APIs.
> >> >
> >> > Signed-off-by: Leo Yan <[email-masked]>
> >> > ---
> >> > ?arch/arm/Kconfig ? ? ? ? ? ? ? ? ? ? ?| ? ?1 +
> >> > ?arch/arm/mach-mmp/Makefile ? ? ? ? ? ?| ? ?2 +-
> >> > ?arch/arm/mach-mmp/include/mach/sram.h | ? 35 +++++++
> >> > ?arch/arm/mach-mmp/sram.c ? ? ? ? ? ? ?| ?168 +++++++++++++++++++++++++++++++++
> >> > ?4 files changed, 205 insertions(+), 1 deletions(-)
> >> > ?create mode 100644 arch/arm/mach-mmp/include/mach/sram.h
> >> > ?create mode 100644 arch/arm/mach-mmp/sram.c
> >>
> >> Some time ago, there was talk of merging the existing sram drivers
> >> and creating a common driver that is easy to hook into.
> >>
> >> What has happened with that? My feeling is that we should stop adding
> >> more drivers like this in the platform code but rather put an
> >> authoritative copy into arch/arm/mm/ or even the top-level mm/ directory
> >> and change over the existing drivers to hook into that one.
> > no need anymore I send patch to add the support of phys/virt to genalloc so
> > now we just have to use it
> >
> > Best Regards,
> > J.
> >
> Exactly, and Russel already gave up on original patch. genpool is already a
> common driver.

Yeah but it seems that we can make arch/arm/mach-mmp/sram.c posted
in this thread a generic driver instead.

Regards,

Tony