linux-kernel - [PATCH 1/3] DMAENGINE: Set burst size for phy and log chans in ste_dma40 dev

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Message-ID: <1286355929-31226-2-git-send-email-linus.walleij@stericsson.com>
Date:	Wed, 6 Oct 2010 11:05:27 +0200
From:	Linus Walleij <linus.walleij@...ricsson.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	<linux-kernel@...r.kernel.org>,
	Per Forlin <per.friden@...ricsson.com>,
	Per Forlin <per.forlin@...ricsson.com>,
	Linus Walleij <linus.walleij@...ricsson.com>
Subject: [PATCH 1/3] DMAENGINE: Set burst size for phy and log chans in ste_dma40 dev_control

From: Per Forlin <per.friden@...ricsson.com>

Set burst for physical or logical channels respectively.
Convert the values in dma_cfg to dma reg bits
for physical or logical channels.

Signed-off-by: Per Forlin <per.forlin@...ricsson.com>
Signed-off-by: Linus Walleij <linus.walleij@...ricsson.com>
---
 drivers/dma/ste_dma40.c |   34 ++++++++++++++++++++++++++--------
 1 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index c07d989..ad8d6df 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2246,14 +2246,25 @@ static void d40_set_runtime_config(struct dma_chan *chan,
 		return;
 	}
 
-	if (config_maxburst >= 16)
-		psize = STEDMA40_PSIZE_LOG_16;
-	else if (config_maxburst >= 8)
-		psize = STEDMA40_PSIZE_LOG_8;
-	else if (config_maxburst >= 4)
-		psize = STEDMA40_PSIZE_LOG_4;
-	else
-		psize = STEDMA40_PSIZE_LOG_1;
+	if (d40c->log_num != D40_PHY_CHAN) {
+		if (config_maxburst >= 16)
+			psize = STEDMA40_PSIZE_LOG_16;
+		else if (config_maxburst >= 8)
+			psize = STEDMA40_PSIZE_LOG_8;
+		else if (config_maxburst >= 4)
+			psize = STEDMA40_PSIZE_LOG_4;
+		else
+			psize = STEDMA40_PSIZE_LOG_1;
+	} else {
+		if (config_maxburst >= 16)
+			psize = STEDMA40_PSIZE_PHY_16;
+		else if (config_maxburst >= 8)
+			psize = STEDMA40_PSIZE_PHY_8;
+		else if (config_maxburst >= 4)
+			psize = STEDMA40_PSIZE_PHY_4;
+		else
+			psize = STEDMA40_PSIZE_PHY_1;
+	}
 
 	/* Set up all the endpoint configs */
 	cfg->src_info.data_width = addr_width;
@@ -2265,6 +2276,13 @@ static void d40_set_runtime_config(struct dma_chan *chan,
 	cfg->dst_info.endianess = STEDMA40_LITTLE_ENDIAN;
 	cfg->dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL;
 
+	/* Fill in register values */
+	if (d40c->log_num != D40_PHY_CHAN)
+		d40_log_cfg(cfg, &d40c->log_def.lcsp1, &d40c->log_def.lcsp3);
+	else
+		d40_phy_cfg(cfg, &d40c->src_def_cfg,
+			    &d40c->dst_def_cfg, false);
+
 	/* These settings will take precedence later */
 	d40c->runtime_addr = config_addr;
 	d40c->runtime_direction = config->direction;
-- 
1.6.3.3

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