linux-kernel - [PATCH] dma: imx-sdma: Add a new DMATYPE for Shared Peripheral ASRC

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Message-ID: <1402889465-23797-1-git-send-email-nicoleotsuka@gmail.com>
Date:	Mon, 16 Jun 2014 11:31:05 +0800
From:	Nicolin Chen <nicoleotsuka@...il.com>
To:	<vinod.koul@...el.com>, <s.hauer@...gutronix.de>
CC:	<robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<rdunlap@...radead.org>, <dan.j.williams@...el.com>,
	<shawn.guo@...aro.org>, <devicetree@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<dmaengine@...r.kernel.org>
Subject: [PATCH] dma: imx-sdma: Add a new DMATYPE for Shared Peripheral ASRC

Shared Peripheral ASRC, running on SPBA, needs to use shp sciprts for
DMA transfer. So this patch just adds a new DMATYPE for it.

Signed-off-by: Nicolin Chen <nicoleotsuka@...il.com>
---
 Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt | 1 +
 drivers/dma/imx-sdma.c                                 | 5 +++++
 include/linux/platform_data/dma-imx.h                  | 1 +
 3 files changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
index ee9be99..d2e91f1 100644
--- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
+++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
@@ -47,6 +47,7 @@ The full ID of peripheral types can be found below.
 	20	ASRC
 	21	ESAI
 	22	SSI Dual FIFO	(needs firmware ver >= 2)
+	23	Shared ASRC
 
 The third cell specifies the transfer priority as below.
 
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index fc04add..85561dc 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -745,6 +745,11 @@ static void sdma_get_pc(struct sdma_channel *sdmac,
 		emi_2_per = sdma->script_addrs->asrc_2_mcu_addr;
 		per_2_per = sdma->script_addrs->per_2_per_addr;
 		break;
+	case IMX_DMATYPE_ASRC_SP:
+		per_2_emi = sdma->script_addrs->shp_2_mcu_addr;
+		emi_2_per = sdma->script_addrs->mcu_2_shp_addr;
+		per_2_per = sdma->script_addrs->per_2_per_addr;
+		break;
 	case IMX_DMATYPE_MSHC:
 		per_2_emi = sdma->script_addrs->mshc_2_mcu_addr;
 		emi_2_per = sdma->script_addrs->mcu_2_mshc_addr;
diff --git a/include/linux/platform_data/dma-imx.h b/include/linux/platform_data/dma-imx.h
index bcbc6c3..7aa0e89 100644
--- a/include/linux/platform_data/dma-imx.h
+++ b/include/linux/platform_data/dma-imx.h
@@ -40,6 +40,7 @@ enum sdma_peripheral_type {
 	IMX_DMATYPE_ASRC,	/* ASRC */
 	IMX_DMATYPE_ESAI,	/* ESAI */
 	IMX_DMATYPE_SSI_DUAL,	/* SSI Dual FIFO */
+	IMX_DMATYPE_ASRC_SP,	/* Shared ASRC */
 };
 
 enum imx_dma_prio {
-- 
1.8.4

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