From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752453AbbH0I5c (ORCPT ); Thu, 27 Aug 2015 04:57:32 -0400 Received: from gloria.sntech.de ([95.129.55.99]:36123 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751432AbbH0I53 (ORCPT ); Thu, 27 Aug 2015 04:57:29 -0400 From: Heiko Stuebner To: Shawn Lin Cc: Vinod Koul , Doug Anderson , Olof Johansson , Sonny Rao , Addy Ke , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Boojin Kim Subject: Re: [PATCH 1/5] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit Date: Thu, 27 Aug 2015 10:57:12 +0200 Message-ID: <7170592.bdD8VT9GQ2@phil> User-Agent: KMail/4.14.1 (Linux/4.1.0-1-amd64; KDE/4.14.2; x86_64; ; ) In-Reply-To: <1440665313-31603-1-git-send-email-shawn.lin@rock-chips.com> References: <1440665280-31557-1-git-send-email-shawn.lin@rock-chips.com> <1440665313-31603-1-git-send-email-shawn.lin@rock-chips.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Shawn, you're loosing the original author. Your can override the patch-author (away from the mail sender) via a "From:" line at the top of the commit message, like: ------ From: Boojin Kim This patch adds to support burst mode for dev-to-mem and mem-to-dev transmit. ... ------ > This patch adds to support burst mode for dev-to-mem and > mem-to-dev transmit. > > Signed-off-by: Boojin Kim > Signed-off-by: Addy Ke > Signed-off-by: Shawn Lin > cc: Heiko Stuebner > cc: Doug Anderson > cc: Olof Johansson > Reviewed-and-tested-by: Sonny Rao > > --- > > drivers/dma/pl330.c | 18 ++++++++++++------ > 1 file changed, 12 insertions(+), 6 deletions(-) > > diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c > index ecab4ea0..0d544d2 100644 > --- a/drivers/dma/pl330.c > +++ b/drivers/dma/pl330.c > @@ -1141,10 +1141,13 @@ static inline int _ldst_devtomem(unsigned dry_run, > u8 buf[], const struct _xfer_spec *pxs, int cyc) > { > int off = 0; > + enum pl330_cond cond; > + > + cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST; > > while (cyc--) { > - off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri); > - off += _emit_LDP(dry_run, &buf[off], SINGLE, pxs->desc->peri); > + off += _emit_WFP(dry_run, &buf[off], cond, pxs->desc->peri); > + off += _emit_LDP(dry_run, &buf[off], cond, pxs->desc->peri); > off += _emit_ST(dry_run, &buf[off], ALWAYS); > off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri); > } > @@ -1156,11 +1159,14 @@ static inline int _ldst_memtodev(unsigned dry_run, > u8 buf[], const struct _xfer_spec *pxs, int cyc) > { > int off = 0; > + enum pl330_cond cond; > + > + cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST; > > while (cyc--) { > - off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri); > + off += _emit_WFP(dry_run, &buf[off], cond, pxs->desc->peri); > off += _emit_LD(dry_run, &buf[off], ALWAYS); > - off += _emit_STP(dry_run, &buf[off], SINGLE, pxs->desc->peri); > + off += _emit_STP(dry_run, &buf[off], cond, pxs->desc->peri); > off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri); > } > > @@ -2557,7 +2563,7 @@ static struct dma_async_tx_descriptor > *pl330_prep_dma_cyclic( > > desc->rqtype = direction; > desc->rqcfg.brst_size = pch->burst_sz; > - desc->rqcfg.brst_len = 1; > + desc->rqcfg.brst_len = pch->burst_len; > desc->bytes_requested = period_len; > fill_px(&desc->px, dst, src, period_len); > > @@ -2702,7 +2708,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct > scatterlist *sgl, } > > desc->rqcfg.brst_size = pch->burst_sz; > - desc->rqcfg.brst_len = 1; > + desc->rqcfg.brst_len = pch->burst_len; > desc->rqtype = direction; > desc->bytes_requested = sg_dma_len(sg); > }