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| author | Vignesh R <vigneshr@ti.com> | 2018-04-10 13:49:10 +0530 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-04-20 22:53:52 +0200 |
| commit | ffa639e069fb55a150a2f14af6762b2c429e6d50 (patch) | |
| tree | 081f47aa29fadc98f5e19c6ac723d0337480fb91 /drivers/mtd/spi-nor/hisi-sfc.c | |
| parent | c7aa1b77f96f3549ac71ac3eb631c8e47536bcf6 (diff) | |
| download | linux-ffa639e069fb55a150a2f14af6762b2c429e6d50.tar.bz2 | |
mtd: spi-nor: cadence-quadspi: Add DMA support for direct mode reads
Add support to use DMA over memory mapped reads in direct mode. This
helps in reducing CPU usage from ~100% to ~10% when reading data from
flash. For non-DMA'able/vmalloc'd buffers, driver just falls back to CPU
based memcpy.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Diffstat (limited to 'drivers/mtd/spi-nor/hisi-sfc.c')
0 files changed, 0 insertions, 0 deletions