From: Boojin Kim <boojin.kim@samsung.com>
To: linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: "'Kukjin Kim'" <kgene.kim@samsung.com>,
"'Russell King'" <linux@arm.linux.org.uk>,
"'Dan Williams'" <djbw@fb.com>,
"'Vinod Koul'" <vinod.koul@intel.com>,
"'Jaswinder Singh'" <jassi.brar@samsung.com>,
"'Ben Dooks'" <ben-linux@fluff.org>
Subject: [PATCH 2/2] ARM: EXYNOS: support burst mode for for dev-to-mem and dev-to-mem transmit
Date: Tue, 19 Feb 2013 11:02:09 +0900 [thread overview]
Message-ID: <00eb01ce0e45$20223c90$6066b5b0$%kim@samsung.com> (raw)
In-Reply-To:
This patch adds to support burst mode for for dev-to-mem and dev-to-mem transmit
Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
---
arch/arm/plat-samsung/dma-ops.c | 10 ++++++++--
arch/arm/plat-samsung/include/plat/dma-ops.h | 1 +
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/arm/plat-samsung/dma-ops.c b/arch/arm/plat-samsung/dma-ops.c
index d088afa..c25e842 100644
--- a/arch/arm/plat-samsung/dma-ops.c
+++ b/arch/arm/plat-samsung/dma-ops.c
@@ -54,14 +54,20 @@ static int samsung_dmadev_config(unsigned ch,
slave_config.direction = param->direction;
slave_config.src_addr = param->fifo;
slave_config.src_addr_width = param->width;
- slave_config.src_maxburst = 1;
+ if (param->maxburst)
+ slave_config.src_maxburst = param->maxburst;
+ else
+ slave_config.src_maxburst = 1;
dmaengine_slave_config(chan, &slave_config);
} else if (param->direction == DMA_MEM_TO_DEV) {
memset(&slave_config, 0, sizeof(struct dma_slave_config));
slave_config.direction = param->direction;
slave_config.dst_addr = param->fifo;
slave_config.dst_addr_width = param->width;
- slave_config.dst_maxburst = 1;
+ if (param->maxburst)
+ slave_config.dst_maxburst = param->maxburst;
+ else
+ slave_config.dst_maxburst = 1;
dmaengine_slave_config(chan, &slave_config);
} else {
pr_warn("unsupported direction\n");
diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h
index f5144cd..95893c7 100644
--- a/arch/arm/plat-samsung/include/plat/dma-ops.h
+++ b/arch/arm/plat-samsung/include/plat/dma-ops.h
@@ -35,6 +35,7 @@ struct samsung_dma_prep {
struct samsung_dma_config {
enum dma_transfer_direction direction;
enum dma_slave_buswidth width;
+ u32 maxburst;
dma_addr_t fifo;
};
--
1.7.5.4
next reply other threads:[~2013-02-19 2:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-19 2:02 Boojin Kim [this message]
2013-03-04 5:45 ` Vinod Koul
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