From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: Re: [PATCH] OMAP: PM: Clear DMA channel state after a wakeup Date: Wed, 20 May 2009 07:26:01 -0700 Message-ID: <871vqju9za.fsf@deeprootsystems.com> References: <1242827910-16136-1-git-send-email-aaro.koskinen@nokia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from wf-out-1314.google.com ([209.85.200.172]:10275 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753013AbZETO0E (ORCPT ); Wed, 20 May 2009 10:26:04 -0400 Received: by wf-out-1314.google.com with SMTP id 26so155244wfd.4 for ; Wed, 20 May 2009 07:26:06 -0700 (PDT) In-Reply-To: <1242827910-16136-1-git-send-email-aaro.koskinen@nokia.com> (Aaro Koskinen's message of "Wed\, 20 May 2009 16\:58\:30 +0300") Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Aaro Koskinen Cc: linux-omap@vger.kernel.org Aaro Koskinen writes: > Clear DMA channel states so that users can assume a known initial state. > > Signed-off-by: Aaro Koskinen Thanks, pushing to PM branch. Kevin > --- > arch/arm/plat-omap/dma.c | 6 ++++++ > 1 files changed, 6 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c > index 9796773..cd53b28 100755 > --- a/arch/arm/plat-omap/dma.c > +++ b/arch/arm/plat-omap/dma.c > @@ -2322,6 +2322,8 @@ EXPORT_SYMBOL(omap_dma_global_context_save); > > void omap_dma_global_context_restore(void) > { > + int ch; > + > dma_write(omap_dma_global_context.dma_gcr, GCR); > dma_write(omap_dma_global_context.dma_ocp_sysconfig, > OCP_SYSCONFIG); > @@ -2336,6 +2338,10 @@ void omap_dma_global_context_restore(void) > */ > if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP)) > dma_write(0x3 , IRQSTATUS_L0); > + > + for (ch = 0; ch < dma_chan_count; ch++) > + if (dma_chan[ch].dev_id != -1) > + omap_clear_dma(ch); > } > EXPORT_SYMBOL(omap_dma_global_context_restore); > > -- > 1.5.4.3