diff options
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index a63b644ad30..692d2b495af 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -29,7 +29,7 @@ #include <asm/system.h> #include <mach/hardware.h> -#include <asm/dma.h> +#include <mach/dma.h> #include <mach/tc.h> @@ -1233,7 +1233,7 @@ int omap_request_dma_chain(int dev_id, const char *dev_name, /* request and reserve DMA channels for the chain */ for (i = 0; i < no_of_chans; i++) { err = omap_request_dma(dev_id, dev_name, - callback, 0, &channels[i]); + callback, NULL, &channels[i]); if (err < 0) { int j; for (j = 0; j < i; j++) @@ -1848,9 +1848,22 @@ static int omap2_dma_handle_ch(int ch) printk(KERN_INFO "DMA synchronization event drop occurred with device " "%d\n", dma_chan[ch].dev_id); - if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) + if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) { printk(KERN_INFO "DMA transaction error with device %d\n", dma_chan[ch].dev_id); + if (cpu_class_is_omap2()) { + /* Errata: sDMA Channel is not disabled + * after a transaction error. So we explicitely + * disable the channel + */ + u32 ccr; + + ccr = dma_read(CCR(ch)); + ccr &= ~OMAP_DMA_CCR_EN; + dma_write(ccr, CCR(ch)); + dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE; + } + } if (unlikely(status & OMAP2_DMA_SECURE_ERR_IRQ)) printk(KERN_INFO "DMA secure error with device %d\n", dma_chan[ch].dev_id); @@ -2297,13 +2310,13 @@ static int __init omap_init_dma(void) int ch, r; if (cpu_class_is_omap1()) { - omap_dma_base = (void __iomem *)IO_ADDRESS(OMAP1_DMA_BASE); + omap_dma_base = IO_ADDRESS(OMAP1_DMA_BASE); dma_lch_count = OMAP1_LOGICAL_DMA_CH_COUNT; } else if (cpu_is_omap24xx()) { - omap_dma_base = (void __iomem *)IO_ADDRESS(OMAP24XX_DMA4_BASE); + omap_dma_base = IO_ADDRESS(OMAP24XX_DMA4_BASE); dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT; } else if (cpu_is_omap34xx()) { - omap_dma_base = (void __iomem *)IO_ADDRESS(OMAP34XX_DMA4_BASE); + omap_dma_base = IO_ADDRESS(OMAP34XX_DMA4_BASE); dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT; } else { pr_err("DMA init failed for unsupported omap\n"); |