From: tomasz.figa@gmail.com (Tomasz Figa)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 06/11] dma: amba-pl08x: Keep LLIs aligned to 4-word boundary
Date: Sun, 16 Jun 2013 22:54:13 +0200 [thread overview]
Message-ID: <1371416058-22047-7-git-send-email-tomasz.figa@gmail.com> (raw)
In-Reply-To: <1371416058-22047-1-git-send-email-tomasz.figa@gmail.com>
PL080 reference manual states that to LLI entries should be aligned
to 4-word boundary to make LLI fetches more efficient. This patch adds
a 3-word padding to the LLi struct to make this condition true.
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
---
drivers/dma/amba-pl08x.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index eb10eb8..0da5539 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -127,6 +127,7 @@ struct pl08x_lli {
u32 lli;
u32 cctl;
u32 cctl1;
+ u32 dummy[3];
};
/**
--
1.8.2.1
next prev parent reply other threads:[~2013-06-16 20:54 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-16 20:54 [RFC PATCH 00/11] ARM: s3c64xx: Let amba-pl08x driver handle DMA Tomasz Figa
2013-06-16 20:54 ` [RFC PATCH 01/11] dma: amba-pl08x: Use bitmap to pass variant specific quirks Tomasz Figa
2013-06-17 13:25 ` Linus Walleij
2013-06-17 18:48 ` Russell King - ARM Linux
2013-06-17 18:56 ` Tomasz Figa
2013-06-18 7:47 ` Linus Walleij
2013-06-18 13:33 ` Arnd Bergmann
2013-06-16 20:54 ` [RFC PATCH 02/11] dma: amba-pl08x: Refactor pl08x_getbytes_chan() to lower indentation Tomasz Figa
2013-06-17 13:29 ` Linus Walleij
2013-06-16 20:54 ` [RFC PATCH 03/11] dma: amba-pl08x: Add support for different offset of CONFIG register Tomasz Figa
2013-06-17 13:31 ` Linus Walleij
2013-06-17 18:52 ` Russell King - ARM Linux
2013-06-17 19:02 ` Tomasz Figa
2013-06-16 20:54 ` [RFC PATCH 04/11] dma: amba-pl08x: Add support for PL080S variant Tomasz Figa
2013-06-17 13:39 ` Linus Walleij
2013-06-17 18:22 ` Tomasz Figa
2013-06-16 20:54 ` [RFC PATCH 05/11] dma: amba-pl08x: Add support for different maximum transfer size Tomasz Figa
2013-06-17 13:42 ` Linus Walleij
2013-06-17 18:27 ` Tomasz Figa
2013-06-16 20:54 ` Tomasz Figa [this message]
2013-06-17 13:51 ` [RFC PATCH 06/11] dma: amba-pl08x: Keep LLIs aligned to 4-word boundary Linus Walleij
2013-06-17 18:28 ` Tomasz Figa
2013-06-17 19:01 ` Russell King - ARM Linux
2013-06-16 20:54 ` [RFC PATCH 07/11] dmaengine: PL08x: Fix reading the byte count in cctl Tomasz Figa
2013-06-17 13:53 ` Linus Walleij
2013-06-17 18:32 ` Tomasz Figa
2013-06-17 19:03 ` Russell King - ARM Linux
2013-06-16 20:54 ` [RFC PATCH 08/11] dmaengine: PL08x: Add cyclic transfer support Tomasz Figa
2013-06-17 13:57 ` Linus Walleij
2013-06-17 18:52 ` Tomasz Figa
2013-06-17 18:56 ` Russell King - ARM Linux
2013-06-16 20:54 ` [RFC PATCH 09/11] spi: s3c64xx: Do not require legacy DMA API in case of S3C64XX Tomasz Figa
2013-06-17 13:59 ` Linus Walleij
2013-06-17 16:06 ` Mark Brown
2013-06-17 19:36 ` Tomasz Figa
2013-06-16 20:54 ` [RFC PATCH 10/11] ASoC: samsung: " Tomasz Figa
2013-06-17 14:01 ` Linus Walleij
2013-06-16 20:54 ` [RFC PATCH 11/11] ARM: s3c64xx: Add support for DMA using generic amba-pl08x driver Tomasz Figa
2013-06-17 14:04 ` Linus Walleij
2013-06-19 18:23 ` Tomasz Figa
2013-06-19 19:50 ` Linus Walleij
2013-06-17 14:06 ` [RFC PATCH 00/11] ARM: s3c64xx: Let amba-pl08x driver handle DMA Linus Walleij
2013-06-17 19:38 ` Tomasz Figa
2013-06-19 17:40 ` Mark Brown
2013-06-19 18:26 ` Tomasz Figa
2013-06-19 19:01 ` Arnd Bergmann
2013-06-19 19:24 ` Mark Brown
2013-06-19 19:22 ` Mark Brown
2013-06-19 19:32 ` Tomasz Figa
2013-06-19 22:48 ` Mark Brown
2013-06-20 9:24 ` Phil Carmody
2013-06-20 10:35 ` Mark Brown
2013-06-20 11:14 ` Phil Carmody
2013-06-21 9:47 ` Mark Brown
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