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path: root/drivers/input/touchscreen/raspberrypi-ts.c
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2019-01-08cross-tree: phase out dma_zalloc_coherent()Luis Chamberlain1-2/+2
We already need to zero out memory for dma_alloc_coherent(), as such using dma_zalloc_coherent() is superflous. Phase it out. This change was generated with the following Coccinelle SmPL patch: @ replace_dma_zalloc_coherent @ expression dev, size, data, handle, flags; @@ -dma_zalloc_coherent(dev, size, handle, flags) +dma_alloc_coherent(dev, size, handle, flags) Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> [hch: re-ran the script on the latest tree] Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-12-21Input: add official Raspberry Pi's touchscreen driverNicolas Saenz Julienne1-0/+227
Add's support to Raspberry Pi's 7" Touch device. Instead of using a conventional bus all information is copied into a memory mapped area by RPi's firmware. Based on the driver found in RPi's kernel repository. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>