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video: fbdev: viafb: Remove dead code

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This is dead code since 3.15. If there is no plan to use
it further, this can be removed forever.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
[b.zolnierkie: fix patch summary]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1564515200-5020-1-git-send-email-jrdr.linux@gmail.com
This commit is contained in:
Souptick Joarder 2019-07-31 01:03:20 +05:30 committed by Bartlomiej Zolnierkiewicz
parent efbd44abaf
commit 2012f7762e
1 changed files with 0 additions and 43 deletions
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43
drivers/video/fbdev/via/via-core.c
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@ -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.