ARM: davinci: Explicitly set channel controllers' default queues

Davinci platforms may define a default queue for each channel
controller. If one is not defined, the default queue is set to EVENTQ_1.
However, there's no way to distinguish between an unset default queue to
one that is set to EVENTQ_0, as EVENTQ_0 = 0.

Explicitly specify the default queue for all channel controllers on all
Davinci platforms to EVENTQ_1, and don't overwrite it in the EDMA probe
function.

One exception is the DA850 board, for which EVENTQ_1 is not a valid
option for its second channel controller. Use EVENTQ_0 instead for that
channel controller.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

6 files changed, 7 insertions, 2 deletions

diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 2f7e719..68def71 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -136,6 +136,7 @@ static struct edma_soc_info da830_edma_cc0_info = {
 	.n_cc			= 1,
 	.queue_tc_mapping	= da8xx_queue_tc_mapping,
 	.queue_priority_mapping	= da8xx_queue_priority_mapping,
+	.default_queue		= EVENTQ_1,
 };
 
 static struct edma_soc_info *da830_edma_info[EDMA_MAX_CC] = {
@@ -151,6 +152,7 @@ static struct edma_soc_info da850_edma_cc_info[] = {
 		.n_cc			= 1,
 		.queue_tc_mapping	= da8xx_queue_tc_mapping,
 		.queue_priority_mapping	= da8xx_queue_priority_mapping,
+		.default_queue		= EVENTQ_1,
 	},
 	{
 		.n_channel		= 32,
@@ -160,6 +162,7 @@ static struct edma_soc_info da850_edma_cc_info[] = {
 		.n_cc			= 1,
 		.queue_tc_mapping	= da850_queue_tc_mapping,
 		.queue_priority_mapping	= da850_queue_priority_mapping,
+		.default_queue		= EVENTQ_0,
 	},
 };
 
diff --git a/arch/arm/mach-davinci/devices-tnetv107x.c b/arch/arm/mach-davinci/devices-tnetv107x.c
index 6162cae..29b17f7 100644
--- a/arch/arm/mach-davinci/devices-tnetv107x.c
+++ b/arch/arm/mach-davinci/devices-tnetv107x.c
@@ -80,6 +80,7 @@ static struct edma_soc_info edma_cc0_info = {
 	.n_cc			= 1,
 	.queue_tc_mapping	= edma_tc_mapping,
 	.queue_priority_mapping	= edma_priority_mapping,
+	.default_queue		= EVENTQ_1,
 };
 
 static struct edma_soc_info *tnetv107x_edma_info[EDMA_MAX_CC] = {
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index a3a94e9..68fb181 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -591,6 +591,7 @@ static struct edma_soc_info edma_cc0_info = {
 	.n_cc			= 1,
 	.queue_tc_mapping	= queue_tc_mapping,
 	.queue_priority_mapping	= queue_priority_mapping,
+	.default_queue		= EVENTQ_1,
 };
 
 static struct edma_soc_info *dm355_edma_info[EDMA_MAX_CC] = {
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 4c82c27..555ff5b 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -514,6 +514,7 @@ static struct edma_soc_info edma_cc0_info = {
 	.n_cc			= 1,
 	.queue_tc_mapping	= queue_tc_mapping,
 	.queue_priority_mapping	= queue_priority_mapping,
+	.default_queue		= EVENTQ_1,
 };
 
 static struct edma_soc_info *dm644x_edma_info[EDMA_MAX_CC] = {
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 1802e71..b0c350a 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -555,6 +555,7 @@ static struct edma_soc_info edma_cc0_info = {
 	.n_cc			= 1,
 	.queue_tc_mapping	= dm646x_queue_tc_mapping,
 	.queue_priority_mapping	= dm646x_queue_priority_mapping,
+	.default_queue		= EVENTQ_1,
 };
 
 static struct edma_soc_info *dm646x_edma_info[EDMA_MAX_CC] = {
diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index 6b96698..6ba4191 100644
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -1450,8 +1450,6 @@ static int __init edma_probe(struct platform_device *pdev)
 							EDMA_MAX_CC);
 
 		edma_cc[j]->default_queue = info[j]->default_queue;
-		if (!edma_cc[j]->default_queue)
-			edma_cc[j]->default_queue = EVENTQ_1;
 
 		dev_dbg(&pdev->dev, "DMA REG BASE ADDR=%p\n",
 			edmacc_regs_base[j]);