patch-2.4.0-test5 linux/arch/arm/kernel/dma-footbridge.c
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- Lines: 114
- Date:
Tue Jul 18 22:43:24 2000
- Orig file:
v2.4.0-test4/linux/arch/arm/kernel/dma-footbridge.c
- Orig date:
Mon Jul 10 16:47:19 2000
diff -u --recursive --new-file v2.4.0-test4/linux/arch/arm/kernel/dma-footbridge.c linux/arch/arm/kernel/dma-footbridge.c
@@ -15,94 +15,44 @@
#include <linux/sched.h>
#include <linux/init.h>
+#include <asm/dec21285.h>
#include <asm/dma.h>
#include <asm/io.h>
#include "dma.h"
-#include "dma-isa.h"
-#ifdef CONFIG_ISA_DMA
-static int has_isa_dma;
-#else
-#define has_isa_dma 0
-#endif
+extern void isa_init_dma(dma_t *dma);
-int arch_request_dma(dmach_t channel, dma_t *dma, const char *dev_name)
+#if 0
+static int fb_dma_request(dmach_t channel, dma_t *dma)
{
- switch (channel) {
- case _DC21285_DMA(0):
- case _DC21285_DMA(1): /* 21285 internal channels */
- return 0;
-
- case _ISA_DMA(0) ... _ISA_DMA(7):
- if (has_isa_dma)
- return isa_request_dma(channel - _ISA_DMA(0), dma, dev_name);
- }
-
return -EINVAL;
}
-void arch_free_dma(dmach_t channel, dma_t *dma)
-{
- /* nothing to do */
-}
-
-int arch_get_dma_residue(dmach_t channel, dma_t *dma)
-{
- int residue = 0;
-
- switch (channel) {
- case _DC21285_DMA(0):
- case _DC21285_DMA(1):
- break;
-
- case _ISA_DMA(0) ... _ISA_DMA(7):
- if (has_isa_dma)
- residue = isa_get_dma_residue(channel - _ISA_DMA(0), dma);
- }
- return residue;
-}
-
-void arch_enable_dma(dmach_t channel, dma_t *dma)
+static void fb_dma_enable(dmach_t channel, dma_t *dma)
{
- switch (channel) {
- case _DC21285_DMA(0):
- case _DC21285_DMA(1):
- /*
- * Not yet implemented
- */
- break;
-
- case _ISA_DMA(0) ... _ISA_DMA(7):
- if (has_isa_dma)
- isa_enable_dma(channel - _ISA_DMA(0), dma);
- }
}
-void arch_disable_dma(dmach_t channel, dma_t *dma)
+static void fb_dma_disable(dmach_t channel, dma_t *dma)
{
- switch (channel) {
- case _DC21285_DMA(0):
- case _DC21285_DMA(1):
- /*
- * Not yet implemented
- */
- break;
-
- case _ISA_DMA(0) ... _ISA_DMA(7):
- if (has_isa_dma)
- isa_disable_dma(channel - _ISA_DMA(0), dma);
- }
}
-int arch_set_dma_speed(dmach_t channel, dma_t *dma, int cycle_ns)
-{
- return 0;
-}
+static struct dma_ops fb_dma_ops = {
+ type: "fb",
+ request: fb_dma_request,
+ enable: fb_dma_enable,
+ disable: fb_dma_disable,
+};
+#endif
void __init arch_dma_init(dma_t *dma)
{
+#if 0
+ dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops;
+ dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
+#endif
#ifdef CONFIG_ISA_DMA
- has_isa_dma = isa_init_dma();
+ if (footbridge_cfn_mode())
+ isa_init_dma(dma + _ISA_DMA(0));
#endif
}
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