video: fbdev: viafb: Remove dead code

}

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.