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path: root/drivers/dma/mv_xor.c
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Diffstat (limited to 'drivers/dma/mv_xor.c')
-rw-r--r--drivers/dma/mv_xor.c40
1 files changed, 28 insertions, 12 deletions
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index a6ec82776cbc..6d012a56b97b 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -31,6 +31,11 @@
#include "dmaengine.h"
#include "mv_xor.h"
+enum mv_xor_type {
+ XOR_ORION,
+ XOR_ARMADA_38X,
+};
+
enum mv_xor_mode {
XOR_MODE_IN_REG,
XOR_MODE_IN_DESC,
@@ -933,7 +938,7 @@ static int mv_xor_channel_remove(struct mv_xor_chan *mv_chan)
static struct mv_xor_chan *
mv_xor_channel_add(struct mv_xor_device *xordev,
struct platform_device *pdev,
- int idx, dma_cap_mask_t cap_mask, int irq, int op_in_desc)
+ int idx, dma_cap_mask_t cap_mask, int irq)
{
int ret = 0;
struct mv_xor_chan *mv_chan;
@@ -945,7 +950,10 @@ mv_xor_channel_add(struct mv_xor_device *xordev,
mv_chan->idx = idx;
mv_chan->irq = irq;
- mv_chan->op_in_desc = op_in_desc;
+ if (xordev->xor_type == XOR_ORION)
+ mv_chan->op_in_desc = XOR_MODE_IN_REG;
+ else
+ mv_chan->op_in_desc = XOR_MODE_IN_DESC;
dma_dev = &mv_chan->dmadev;
@@ -1137,8 +1145,8 @@ static int mv_xor_resume(struct platform_device *dev)
}
static const struct of_device_id mv_xor_dt_ids[] = {
- { .compatible = "marvell,orion-xor", .data = (void *)XOR_MODE_IN_REG },
- { .compatible = "marvell,armada-380-xor", .data = (void *)XOR_MODE_IN_DESC },
+ { .compatible = "marvell,orion-xor", .data = (void *)XOR_ORION },
+ { .compatible = "marvell,armada-380-xor", .data = (void *)XOR_ARMADA_38X },
{},
};
@@ -1152,7 +1160,6 @@ static int mv_xor_probe(struct platform_device *pdev)
struct resource *res;
unsigned int max_engines, max_channels;
int i, ret;
- int op_in_desc;
dev_notice(&pdev->dev, "Marvell shared XOR driver\n");
@@ -1180,6 +1187,20 @@ static int mv_xor_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, xordev);
+
+ /*
+ * We need to know which type of XOR device we use before
+ * setting up. In non-dt case it can only be the legacy one.
+ */
+ xordev->xor_type = XOR_ORION;
+ if (pdev->dev.of_node) {
+ const struct of_device_id *of_id =
+ of_match_device(mv_xor_dt_ids,
+ &pdev->dev);
+
+ xordev->xor_type = (uintptr_t)of_id->data;
+ }
+
/*
* (Re-)program MBUS remapping windows if we are asked to.
*/
@@ -1212,15 +1233,11 @@ static int mv_xor_probe(struct platform_device *pdev)
if (pdev->dev.of_node) {
struct device_node *np;
int i = 0;
- const struct of_device_id *of_id =
- of_match_device(mv_xor_dt_ids,
- &pdev->dev);
for_each_child_of_node(pdev->dev.of_node, np) {
struct mv_xor_chan *chan;
dma_cap_mask_t cap_mask;
int irq;
- op_in_desc = (uintptr_t)of_id->data;
if (i >= max_channels)
continue;
@@ -1237,7 +1254,7 @@ static int mv_xor_probe(struct platform_device *pdev)
}
chan = mv_xor_channel_add(xordev, pdev, i,
- cap_mask, irq, op_in_desc);
+ cap_mask, irq);
if (IS_ERR(chan)) {
ret = PTR_ERR(chan);
irq_dispose_mapping(irq);
@@ -1266,8 +1283,7 @@ static int mv_xor_probe(struct platform_device *pdev)
}
chan = mv_xor_channel_add(xordev, pdev, i,
- cd->cap_mask, irq,
- XOR_MODE_IN_REG);
+ cd->cap_mask, irq);
if (IS_ERR(chan)) {
ret = PTR_ERR(chan);
goto err_channel_add;