diff options
Diffstat (limited to 'arch/arm/mach-footbridge/dma.c')
-rw-r--r-- | arch/arm/mach-footbridge/dma.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c new file mode 100644 index 000000000..e2e0df8bc --- /dev/null +++ b/arch/arm/mach-footbridge/dma.c @@ -0,0 +1,57 @@ +/* + * linux/arch/arm/kernel/dma-ebsa285.c + * + * Copyright (C) 1998 Phil Blundell + * + * DMA functions specific to EBSA-285/CATS architectures + * + * Changelog: + * 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c + * 17-Mar-1999 RMK Allow any EBSA285-like architecture to have + * ISA DMA controllers. + */ +#include <linux/init.h> +#include <linux/io.h> +#include <linux/spinlock.h> + +#include <asm/dma.h> +#include <asm/scatterlist.h> + +#include <asm/mach/dma.h> +#include <asm/hardware/dec21285.h> + +#if 0 +static int fb_dma_request(unsigned int chan, dma_t *dma) +{ + return -EINVAL; +} + +static void fb_dma_enable(unsigned int chan, dma_t *dma) +{ +} + +static void fb_dma_disable(unsigned int chan, dma_t *dma) +{ +} + +static struct dma_ops fb_dma_ops = { + .type = "fb", + .request = fb_dma_request, + .enable = fb_dma_enable, + .disable = fb_dma_disable, +}; +#endif + +static int __init fb_dma_init(void) +{ +#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 + if (footbridge_cfn_mode()) + isa_init_dma(); +#endif + return 0; +} +core_initcall(fb_dma_init); |