diff options
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 7677a4a1cef..9b00f4cbc90 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -946,7 +946,9 @@ void omap_start_dma(int lch) cur_lch = next_lch; } while (next_lch != -1); - } else if (cpu_class_is_omap2()) { + } else if (cpu_is_omap242x() || + (cpu_is_omap243x() && omap_type() <= OMAP2430_REV_ES1_0)) { + /* Errata: Need to write lch even if not using chaining */ dma_write(lch, CLNK_CTRL(lch)); } @@ -1125,6 +1127,11 @@ int omap_dma_running(void) void omap_dma_link_lch(int lch_head, int lch_queue) { if (omap_dma_in_1510_mode()) { + if (lch_head == lch_queue) { + dma_write(dma_read(CCR(lch_head)) | (3 << 8), + CCR(lch_head)); + return; + } printk(KERN_ERR "DMA linking is not supported in 1510 mode\n"); BUG(); return; @@ -1147,6 +1154,11 @@ EXPORT_SYMBOL(omap_dma_link_lch); void omap_dma_unlink_lch(int lch_head, int lch_queue) { if (omap_dma_in_1510_mode()) { + if (lch_head == lch_queue) { + dma_write(dma_read(CCR(lch_head)) & ~(3 << 8), + CCR(lch_head)); + return; + } printk(KERN_ERR "DMA linking is not supported in 1510 mode\n"); BUG(); return; |