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 2f7e719636f1..68def7188868 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 6162cae7f868..29b17f7d3a5f 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 a3a94e9c9378..68fb18162459 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 4c82c2716293..555ff5bdb220 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 1802e711a2b8..b0c350a02484 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 6b9669869c46..6ba4191d6570 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]);