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Date: Wed, 9 Oct 2013 13:40:28 +0800
From: Qiao Zhou <zhouqiao@...vell.com>
To: <vinod.koul@...el.com>, <dan.j.williams@...el.com>,
<zhangfei.gao@...il.com>, <linux-kernel@...r.kernel.org>,
<chao.xie@...vell.com>
CC: Qiao Zhou <zhouqiao@...vell.com>
Subject: [PATCH] dma: mmp_tdma: add multiple burst size support for 910-squ
add multiple burst size support for 910-squ.
Signed-off-by: Qiao Zhou <zhouqiao@...vell.com>
---
drivers/dma/mmp_tdma.c | 25 ++++++++++++++++++++++++-
1 files changed, 24 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 38cb517..d84354b 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -228,8 +228,31 @@ static int mmp_tdma_config_chan(struct mmp_tdma_chan *tdmac)
return -EINVAL;
}
} else if (tdmac->type == PXA910_SQU) {
- tdcr |= TDCR_BURSTSZ_SQU_32B;
tdcr |= TDCR_SSPMOD;
+
+ switch (tdmac->burst_sz) {
+ case 1:
+ tdcr |= TDCR_BURSTSZ_SQU_1B;
+ break;
+ case 2:
+ tdcr |= TDCR_BURSTSZ_SQU_2B;
+ break;
+ case 4:
+ tdcr |= TDCR_BURSTSZ_SQU_4B;
+ break;
+ case 8:
+ tdcr |= TDCR_BURSTSZ_SQU_8B;
+ break;
+ case 16:
+ tdcr |= TDCR_BURSTSZ_SQU_16B;
+ break;
+ case 32:
+ tdcr |= TDCR_BURSTSZ_SQU_32B;
+ break;
+ default:
+ dev_err(tdmac->dev, "mmp_tdma: unknown burst size.\n");
+ return -EINVAL;
+ }
}
writel(tdcr, tdmac->reg_base + TDCR);
--
1.7.0.4
--
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