From mboxrd@z Thu Jan 1 00:00:00 1970 From: tony@atomide.com (Tony Lindgren) Date: Fri, 7 Oct 2011 12:06:54 -0700 Subject: [PATCH 1/3] ARM: mmp: add sram allocator In-Reply-To: References: <1313377794-26721-1-git-send-email-leoy@marvell.com> <1313377794-26721-2-git-send-email-leoy@marvell.com> <1403041.Yj2MdIhcZO@wuerfel> <20110815090921.GA32705@game.jcrosoft.org> Message-ID: <20111007190654.GM6324@atomide.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org * Haojian Zhuang [110815 01:57]: > On Mon, Aug 15, 2011 at 5:09 PM, Jean-Christophe PLAGNIOL-VILLARD > 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 > >> > --- > >> > ?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