summaryrefslogtreecommitdiffstats
path: root/arch/sh/drivers/dma/dma-sh.c
diff options
context:
space:
mode:
authorDave Jones <davej@redhat.com>2006-12-12 17:41:41 -0500
committerDave Jones <davej@redhat.com>2006-12-12 17:41:41 -0500
commitc4366889dda8110247be59ca41fddb82951a8c26 (patch)
tree705c1a996bed8fd48ce94ff33ec9fd00f9b94875 /arch/sh/drivers/dma/dma-sh.c
parentdb2fb9db5735cc532fd4fc55e94b9a3c3750378e (diff)
parente1036502e5263851259d147771226161e5ccc85a (diff)
Merge ../linus
Conflicts: drivers/cpufreq/cpufreq.c
Diffstat (limited to 'arch/sh/drivers/dma/dma-sh.c')
-rw-r--r--arch/sh/drivers/dma/dma-sh.c51
1 files changed, 27 insertions, 24 deletions
diff --git a/arch/sh/drivers/dma/dma-sh.c b/arch/sh/drivers/dma/dma-sh.c
index d8ece20bb2c..f63721ed86c 100644
--- a/arch/sh/drivers/dma/dma-sh.c
+++ b/arch/sh/drivers/dma/dma-sh.c
@@ -19,23 +19,34 @@
#include <asm/io.h>
#include "dma-sh.h"
-static inline unsigned int get_dmte_irq(unsigned int chan)
-{
- unsigned int irq = 0;
+
+#ifdef CONFIG_CPU_SH4
+static struct ipr_data dmae_ipr_map[] = {
+ { DMAE_IRQ, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+};
+#endif
+static struct ipr_data dmte_ipr_map[] = {
/*
* Normally we could just do DMTE0_IRQ + chan outright, though in the
* case of the 7751R, the DMTE IRQs for channels > 4 start right above
* the SCIF
*/
- if (chan < 4) {
- irq = DMTE0_IRQ + chan;
- } else {
-#ifdef DMTE4_IRQ
- irq = DMTE4_IRQ + chan - 4;
-#endif
- }
+ { DMTE0_IRQ + 0, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE0_IRQ + 1, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE0_IRQ + 2, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE0_IRQ + 3, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE4_IRQ + 0, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE4_IRQ + 1, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE4_IRQ + 2, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+ { DMTE4_IRQ + 3, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
+};
+static inline unsigned int get_dmte_irq(unsigned int chan)
+{
+ unsigned int irq = 0;
+ if (chan < ARRAY_SIZE(dmte_ipr_map))
+ irq = dmte_ipr_map[chan].irq;
return irq;
}
@@ -83,20 +94,13 @@ static int sh_dmac_request_dma(struct dma_channel *chan)
if (unlikely(!chan->flags & DMA_TEI_CAPABLE))
return 0;
- chan->name = kzalloc(32, GFP_KERNEL);
- if (unlikely(chan->name == NULL))
- return -ENOMEM;
- snprintf(chan->name, 32, "DMAC Transfer End (Channel %d)",
- chan->chan);
-
return request_irq(get_dmte_irq(chan->chan), dma_tei,
- IRQF_DISABLED, chan->name, chan);
+ IRQF_DISABLED, chan->dev_id, chan);
}
static void sh_dmac_free_dma(struct dma_channel *chan)
{
free_irq(get_dmte_irq(chan->chan), chan);
- kfree(chan->name);
}
static void
@@ -258,17 +262,16 @@ static int __init sh_dmac_init(void)
int i;
#ifdef CONFIG_CPU_SH4
- make_ipr_irq(DMAE_IRQ, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY);
+ make_ipr_irq(dmae_ipr_map, ARRAY_SIZE(dmae_ipr_map));
i = request_irq(DMAE_IRQ, dma_err, IRQF_DISABLED, "DMAC Address Error", 0);
if (unlikely(i < 0))
return i;
#endif
- for (i = 0; i < info->nr_channels; i++) {
- int irq = get_dmte_irq(i);
-
- make_ipr_irq(irq, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY);
- }
+ i = info->nr_channels;
+ if (i > ARRAY_SIZE(dmte_ipr_map))
+ i = ARRAY_SIZE(dmte_ipr_map);
+ make_ipr_irq(dmte_ipr_map, i);
/*
* Initialize DMAOR, and clean up any error flags that may have