diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/via/via-core.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c index e2b2062673da..ffa2ca2d3f5e 100644 --- a/drivers/video/fbdev/via/via-core.c +++ b/drivers/video/fbdev/via/via-core.c @@ -221,49 +221,6 @@ void viafb_release_dma(void) } EXPORT_SYMBOL_GPL(viafb_release_dma); - -#if 0 -/* - * Copy a single buffer from FB memory, synchronously. This code works - * but is not currently used. - */ -void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len) -{ - unsigned long flags; - int csr; - - mutex_lock(&viafb_dma_lock); - init_completion(&viafb_dma_completion); - /* - * Program the controller. - */ - spin_lock_irqsave(&global_dev.reg_lock, flags); - viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_DONE); - /* Enable ints; must happen after CSR0 write! */ - viafb_mmio_write(VDMA_MR0, VDMA_MR_TDIE); - viafb_mmio_write(VDMA_MARL0, (int) (paddr & 0xfffffff0)); - viafb_mmio_write(VDMA_MARH0, (int) ((paddr >> 28) & 0xfff)); - /* Data sheet suggests DAR0 should be <<4, but it lies */ - viafb_mmio_write(VDMA_DAR0, offset); - viafb_mmio_write(VDMA_DQWCR0, len >> 4); - viafb_mmio_write(VDMA_TMR0, 0); - viafb_mmio_write(VDMA_DPRL0, 0); - viafb_mmio_write(VDMA_DPRH0, 0); - viafb_mmio_write(VDMA_PMR0, 0); - csr = viafb_mmio_read(VDMA_CSR0); - viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_START); - spin_unlock_irqrestore(&global_dev.reg_lock, flags); - /* - * Now we just wait until the interrupt handler says - * we're done. - */ - wait_for_completion_interruptible(&viafb_dma_completion); - viafb_mmio_write(VDMA_MR0, 0); /* Reset int enable */ - mutex_unlock(&viafb_dma_lock); -} -EXPORT_SYMBOL_GPL(viafb_dma_copy_out); -#endif - /* * Do a scatter/gather DMA copy from FB memory. You must have done * a successful call to viafb_request_dma() first. |