This reverts commit c91134d9194478144ba579ca6efeddf628055650.
The conversion of the pxa architecture is now finished for all
drivers, so this functions has fullfilled its purpose and can
now be removed.
Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
drivers/dma/pxa_dma.c | 28 ----------------------------
1 file changed, 28 deletions(-)
diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index 3f56f9ca4482..b53fb618bbf6 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -413,15 +413,6 @@ static inline void pxad_init_debugfs(struct pxad_device *pdev) {}
static inline void pxad_cleanup_debugfs(struct pxad_device *pdev) {}
#endif
-/*
- * In the transition phase where legacy pxa handling is done at the same time as
- * mmp_dma, the DMA physical channel split between the 2 DMA providers is done
- * through legacy_reserved. Legacy code reserves DMA channels by settings
- * corresponding bits in legacy_reserved.
- */
-static u32 legacy_reserved;
-static u32 legacy_unavailable;
-
static struct pxad_phy *lookup_phy(struct pxad_chan *pchan)
{
int prio, i;
@@ -442,14 +433,10 @@ static struct pxad_phy *lookup_phy(struct pxad_chan *pchan)
for (i = 0; i < pdev->nr_chans; i++) {
if (prio != (i & 0xf) >> 2)
continue;
- if ((i < 32) && (legacy_reserved & BIT(i)))
- continue;
phy = &pdev->phys[i];
if (!phy->vchan) {
phy->vchan = pchan;
found = phy;
- if (i < 32)
- legacy_unavailable |= BIT(i);
goto out_unlock;
}
}
@@ -469,7 +456,6 @@ static void pxad_free_phy(struct pxad_chan *chan)
struct pxad_device *pdev = to_pxad_dev(chan->vc.chan.device);
unsigned long flags;
u32 reg;
- int i;
dev_dbg(&chan->vc.chan.dev->device,
"%s(): freeing\n", __func__);
@@ -483,9 +469,6 @@ static void pxad_free_phy(struct pxad_chan *chan)
}
spin_lock_irqsave(&pdev->phy_lock, flags);
- for (i = 0; i < 32; i++)
- if (chan->phy == &pdev->phys[i])
- legacy_unavailable &= ~BIT(i);
chan->phy->vchan = NULL;
chan->phy = NULL;
spin_unlock_irqrestore(&pdev->phy_lock, flags);
@@ -739,8 +722,6 @@ static irqreturn_t pxad_int_handler(int irq, void *dev_id)
i = __ffs(dint);
dint &= (dint - 1);
phy = &pdev->phys[i];
- if ((i < 32) && (legacy_reserved & BIT(i)))
- continue;
if (pxad_chan_handler(irq, phy) == IRQ_HANDLED)
ret = IRQ_HANDLED;
}
@@ -1522,15 +1503,6 @@ bool pxad_filter_fn(struct dma_chan *chan, void *param)
}
EXPORT_SYMBOL_GPL(pxad_filter_fn);
-int pxad_toggle_reserved_channel(int legacy_channel)
-{
- if (legacy_unavailable & (BIT(legacy_channel)))
- return -EBUSY;
- legacy_reserved ^= BIT(legacy_channel);
- return 0;
-}
-EXPORT_SYMBOL_GPL(pxad_toggle_reserved_channel);
-
module_platform_driver(pxad_driver);
MODULE_DESCRIPTION("Marvell PXA Peripheral DMA Driver");
--
2.1.4
--
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