diff options
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index aa1cf79f954..8e7c33656b5 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -292,22 +292,39 @@ void omap_set_dma_src_data_pack(int lch, int enable) void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode) { + unsigned int burst = 0; OMAP_DMA_CSDP_REG(lch) &= ~(0x03 << 7); switch (burst_mode) { case OMAP_DMA_DATA_BURST_DIS: break; case OMAP_DMA_DATA_BURST_4: - OMAP_DMA_CSDP_REG(lch) |= (0x02 << 7); + if (cpu_is_omap24xx()) + burst = 0x1; + else + burst = 0x2; break; case OMAP_DMA_DATA_BURST_8: - /* not supported by current hardware + if (cpu_is_omap24xx()) { + burst = 0x2; + break; + } + /* not supported by current hardware on OMAP1 * w |= (0x03 << 7); * fall through */ + case OMAP_DMA_DATA_BURST_16: + if (cpu_is_omap24xx()) { + burst = 0x3; + break; + } + /* OMAP1 don't support burst 16 + * fall through + */ default: BUG(); } + OMAP_DMA_CSDP_REG(lch) |= (burst << 7); } /* Note that dest_port is only for OMAP1 */ @@ -354,22 +371,38 @@ void omap_set_dma_dest_data_pack(int lch, int enable) void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode) { + unsigned int burst = 0; OMAP_DMA_CSDP_REG(lch) &= ~(0x03 << 14); switch (burst_mode) { case OMAP_DMA_DATA_BURST_DIS: break; case OMAP_DMA_DATA_BURST_4: - OMAP_DMA_CSDP_REG(lch) |= (0x02 << 14); + if (cpu_is_omap24xx()) + burst = 0x1; + else + burst = 0x2; break; case OMAP_DMA_DATA_BURST_8: - OMAP_DMA_CSDP_REG(lch) |= (0x03 << 14); + if (cpu_is_omap24xx()) + burst = 0x2; + else + burst = 0x3; break; + case OMAP_DMA_DATA_BURST_16: + if (cpu_is_omap24xx()) { + burst = 0x3; + break; + } + /* OMAP1 don't support burst 16 + * fall through + */ default: printk(KERN_ERR "Invalid DMA burst mode\n"); BUG(); return; } + OMAP_DMA_CSDP_REG(lch) |= (burst << 14); } static inline void omap_enable_channel_irq(int lch) |