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From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: linux-mmc@vger.kernel.org
Cc: linux-sh@vger.kernel.org, Paul Mundt <lethal@linux-sh.org>,
	Chris Ball <cjb@laptop.org>
Subject: [PATCH 1/2] mmc: sh_mmcif: simplify platform data
Date: Tue, 30 Aug 2011 18:26:39 +0200 (CEST)	[thread overview]
Message-ID: <Pine.LNX.4.64.1108301824380.19151@axis700.grange> (raw)
In-Reply-To: <Pine.LNX.4.64.1108301819150.19151@axis700.grange>

Provide platforms with a simplified way to specify MMCIF DMA slave IDs in
a way, similar to SDHI and other sh_dma clients.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---
 drivers/mmc/host/sh_mmcif.c  |   20 ++++++++++++++++----
 include/linux/mmc/sh_mmcif.h |    4 +++-
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 557886b..bd91c94 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -165,6 +165,8 @@ struct sh_mmcif_host {
 	struct mmc_host *mmc;
 	struct mmc_data *data;
 	struct platform_device *pd;
+	struct sh_dmae_slave dma_slave_tx;
+	struct sh_dmae_slave dma_slave_rx;
 	struct clk *hclk;
 	unsigned int clk;
 	int bus_width;
@@ -323,25 +325,35 @@ static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
 static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
 				 struct sh_mmcif_plat_data *pdata)
 {
+	struct sh_dmae_slave *tx, *rx;
 	host->dma_active = false;
 
 	/* We can only either use DMA for both Tx and Rx or not use it at all */
 	if (pdata->dma) {
+		dev_warn(&host->pd->dev,
+			 "Update your platform to use embedded DMA slave IDs\n");
+		tx = &pdata->dma->chan_priv_tx;
+		rx = &pdata->dma->chan_priv_rx;
+	} else {
+		tx = &host->dma_slave_tx;
+		tx->slave_id = pdata->slave_id_tx;
+		rx = &host->dma_slave_rx;
+		rx->slave_id = pdata->slave_id_rx;
+	}
+	if (tx->slave_id > 0 && rx->slave_id > 0) {
 		dma_cap_mask_t mask;
 
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
 
-		host->chan_tx = dma_request_channel(mask, sh_mmcif_filter,
-						    &pdata->dma->chan_priv_tx);
+		host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
 		dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
 			host->chan_tx);
 
 		if (!host->chan_tx)
 			return;
 
-		host->chan_rx = dma_request_channel(mask, sh_mmcif_filter,
-						    &pdata->dma->chan_priv_rx);
+		host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
 		dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
 			host->chan_rx);
 
diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h
index 0222cd8..04ff452 100644
--- a/include/linux/mmc/sh_mmcif.h
+++ b/include/linux/mmc/sh_mmcif.h
@@ -41,7 +41,9 @@ struct sh_mmcif_plat_data {
 	void (*set_pwr)(struct platform_device *pdev, int state);
 	void (*down_pwr)(struct platform_device *pdev);
 	int (*get_cd)(struct platform_device *pdef);
-	struct sh_mmcif_dma	*dma;
+	struct sh_mmcif_dma	*dma;		/* Deprecated. Instead */
+	unsigned int		slave_id_tx;	/* use embedded slave_id_[tr]x */
+	unsigned int		slave_id_rx;
 	u8			sup_pclk;	/* 1 :SH7757, 0: SH7724/SH7372 */
 	unsigned long		caps;
 	u32			ocr;
-- 
1.7.2.5


WARNING: multiple messages have this Message-ID (diff)
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: linux-mmc@vger.kernel.org
Cc: linux-sh@vger.kernel.org, Paul Mundt <lethal@linux-sh.org>,
	Chris Ball <cjb@laptop.org>
Subject: [PATCH 1/2] mmc: sh_mmcif: simplify platform data
Date: Tue, 30 Aug 2011 16:26:39 +0000	[thread overview]
Message-ID: <Pine.LNX.4.64.1108301824380.19151@axis700.grange> (raw)
In-Reply-To: <Pine.LNX.4.64.1108301819150.19151@axis700.grange>

Provide platforms with a simplified way to specify MMCIF DMA slave IDs in
a way, similar to SDHI and other sh_dma clients.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---
 drivers/mmc/host/sh_mmcif.c  |   20 ++++++++++++++++----
 include/linux/mmc/sh_mmcif.h |    4 +++-
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 557886b..bd91c94 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -165,6 +165,8 @@ struct sh_mmcif_host {
 	struct mmc_host *mmc;
 	struct mmc_data *data;
 	struct platform_device *pd;
+	struct sh_dmae_slave dma_slave_tx;
+	struct sh_dmae_slave dma_slave_rx;
 	struct clk *hclk;
 	unsigned int clk;
 	int bus_width;
@@ -323,25 +325,35 @@ static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
 static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
 				 struct sh_mmcif_plat_data *pdata)
 {
+	struct sh_dmae_slave *tx, *rx;
 	host->dma_active = false;
 
 	/* We can only either use DMA for both Tx and Rx or not use it at all */
 	if (pdata->dma) {
+		dev_warn(&host->pd->dev,
+			 "Update your platform to use embedded DMA slave IDs\n");
+		tx = &pdata->dma->chan_priv_tx;
+		rx = &pdata->dma->chan_priv_rx;
+	} else {
+		tx = &host->dma_slave_tx;
+		tx->slave_id = pdata->slave_id_tx;
+		rx = &host->dma_slave_rx;
+		rx->slave_id = pdata->slave_id_rx;
+	}
+	if (tx->slave_id > 0 && rx->slave_id > 0) {
 		dma_cap_mask_t mask;
 
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
 
-		host->chan_tx = dma_request_channel(mask, sh_mmcif_filter,
-						    &pdata->dma->chan_priv_tx);
+		host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
 		dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
 			host->chan_tx);
 
 		if (!host->chan_tx)
 			return;
 
-		host->chan_rx = dma_request_channel(mask, sh_mmcif_filter,
-						    &pdata->dma->chan_priv_rx);
+		host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
 		dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
 			host->chan_rx);
 
diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h
index 0222cd8..04ff452 100644
--- a/include/linux/mmc/sh_mmcif.h
+++ b/include/linux/mmc/sh_mmcif.h
@@ -41,7 +41,9 @@ struct sh_mmcif_plat_data {
 	void (*set_pwr)(struct platform_device *pdev, int state);
 	void (*down_pwr)(struct platform_device *pdev);
 	int (*get_cd)(struct platform_device *pdef);
-	struct sh_mmcif_dma	*dma;
+	struct sh_mmcif_dma	*dma;		/* Deprecated. Instead */
+	unsigned int		slave_id_tx;	/* use embedded slave_id_[tr]x */
+	unsigned int		slave_id_rx;
 	u8			sup_pclk;	/* 1 :SH7757, 0: SH7724/SH7372 */
 	unsigned long		caps;
 	u32			ocr;
-- 
1.7.2.5


  reply	other threads:[~2011-08-30 16:26 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-30 16:26 [PATCH 0/2] mmc: sh_mmcif: simplify platform DMA configuration Guennadi Liakhovetski
2011-08-30 16:26 ` Guennadi Liakhovetski
2011-08-30 16:26 ` Guennadi Liakhovetski [this message]
2011-08-30 16:26   ` [PATCH 1/2] mmc: sh_mmcif: simplify platform data Guennadi Liakhovetski
2011-09-21 18:43   ` Chris Ball
2011-09-21 18:43     ` Chris Ball
2011-08-30 16:26 ` [PATCH 2/2] ARM: mach-shmobile: simplify MMCIF DMA configuration Guennadi Liakhovetski
2011-08-30 16:26   ` Guennadi Liakhovetski
2011-09-05  4:15 ` [PATCH 0/2] mmc: sh_mmcif: simplify platform " Paul Mundt
2011-09-05  4:15   ` Paul Mundt
2011-09-05  7:15   ` Guennadi Liakhovetski
2011-09-05  7:15     ` Guennadi Liakhovetski
2012-01-17 16:39   ` Guennadi Liakhovetski
2012-01-17 16:39     ` Guennadi Liakhovetski
2012-01-18  0:21     ` Paul Mundt
2012-01-18  0:21       ` Paul Mundt

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