From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Viresh Kumar <viresh.linux@gmail.com>,
linux-kernel@vger.kernel.org, Vinod Koul <vinod.koul@intel.com>,
Dan Williams <dan.j.williams@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH 3/3] dw_dmac: set default alignment
Date: Fri, 13 Jul 2012 11:09:34 +0300 [thread overview]
Message-ID: <1342166974-4490-3-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1342166974-4490-1-git-send-email-andriy.shevchenko@linux.intel.com>
The default values are filled to support at least mem-to-mem tests provided by
dmatest module. It makes sense to choose the 4 bytes (2 least significant bits)
alignment by the default.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/dma/dw_dmac.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 3d061c6..2a19ab6 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1485,6 +1485,12 @@ static int __devinit dw_probe(struct platform_device *pdev)
dw->dma.device_tx_status = dwc_tx_status;
dw->dma.device_issue_pending = dwc_issue_pending;
+ /* Set default alignment */
+ dw->dma.copy_align = 2;
+ dw->dma.xor_align = 2;
+ dw->dma.pq_align = 2;
+ dw->dma.fill_align = 2;
+
dma_writel(dw, CFG, DW_CFG_DMA_EN);
printk(KERN_INFO "%s: DesignWare DMA Controller, %d channels\n",
--
1.7.10.4
next prev parent reply other threads:[~2012-07-13 8:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-13 8:09 [PATCH 1/3] dw_dmac: mark dwc_dump_lli inline Andy Shevchenko
2012-07-13 8:09 ` [PATCH 2/3] dw_dmac: use 'u32' for LLI structure members, not dma_addr_t Andy Shevchenko
2012-07-13 8:27 ` viresh kumar
2012-07-13 8:09 ` Andy Shevchenko [this message]
2012-07-13 8:26 ` [PATCH 3/3] dw_dmac: set default alignment viresh kumar
2012-07-13 8:45 ` Andy Shevchenko
2012-07-13 8:56 ` viresh kumar
2012-07-13 10:04 ` Andy Shevchenko
2012-07-13 10:30 ` viresh kumar
2012-07-13 10:34 ` Andy Shevchenko
2012-07-13 8:27 ` [PATCH 1/3] dw_dmac: mark dwc_dump_lli inline viresh kumar
2012-07-16 6:34 ` Vinod Koul
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