From: Viresh Kumar <viresh.kumar@st.com>
To: <dan.j.williams@intel.com>, <linux-kernel@vger.kernel.org>
Cc: <shiraz.hashim@st.com>, <amit.goel@st.com>,
<armando.visconti@st.com>, Viresh KUMAR <viresh.kumar@st.com>
Subject: [PATCH 5/7] dw_dmac: adding support for 64 bit access width for memcpy xfers
Date: Thu, 17 Feb 2011 12:54:55 +0530 [thread overview]
Message-ID: <2a9a8a4d0fe4793fcdf4418b7e44c4c08a9c4153.1297926678.git.viresh.kumar@st.com> (raw)
In-Reply-To: <d41145ce4d5e3d870f720709f68d5b1dbf34d6a0.1297926678.git.viresh.kumar@st.com>
From: Viresh KUMAR <viresh.kumar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
---
drivers/dma/dw_dmac.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 5cc5abf..c40b89f 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -577,7 +577,9 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
* We can be a lot more clever here, but this should take care
* of the most common optimization.
*/
- if (!((src | dest | len) & 3))
+ if (!((src | dest | len) & 7))
+ src_width = dst_width = 3;
+ else if (!((src | dest | len) & 3))
src_width = dst_width = 2;
else if (!((src | dest | len) & 1))
src_width = dst_width = 1;
--
1.7.2.2
next prev parent reply other threads:[~2011-02-17 7:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-17 7:24 [PATCH 1/7] dw_dmac: Remove compilation dependency from AVR32 Viresh Kumar
2011-02-17 7:24 ` [PATCH 2/7] dw_dmac: Move single descriptor from dwc->queue to dwc->active_list in dwc_complete_all Viresh Kumar
2011-02-17 7:24 ` [PATCH 3/7] dw_dmac: call dwc_scan_descriptor from dwc_issue_pending only if active list is empty Viresh Kumar
2011-02-17 7:24 ` [PATCH 4/7] dw_dmac: calling dwc_scan_descriptors from dwc_tx_status() after taking lock Viresh Kumar
2011-02-17 7:24 ` Viresh Kumar [this message]
2011-02-17 7:24 ` [PATCH 6/7] dw_dmac: Mark all tx_descriptors with DMA_CRTL_ACK after xfer finish Viresh Kumar
2011-02-17 7:24 ` [PATCH 7/7] dw_dmac.c: Pass Channel Allocation Priority from platform_data Viresh Kumar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2a9a8a4d0fe4793fcdf4418b7e44c4c08a9c4153.1297926678.git.viresh.kumar@st.com \
--to=viresh.kumar@st.com \
--cc=amit.goel@st.com \
--cc=armando.visconti@st.com \
--cc=dan.j.williams@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=shiraz.hashim@st.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®