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| author | Ben Dooks <ben@simtec.co.uk> | 2009-12-14 22:20:24 -0800 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-12-17 08:57:01 -0700 |
| commit | bec0806cfec6ded1a7e097bb95279e521a796129 (patch) | |
| tree | f4be92d1c09a1785ea693d9f99ad2dbfc26bbbac /arch | |
| parent | e24c745272072fd2abe55209f1949b7b7ee602a7 (diff) | |
| download | linux-3.10-bec0806cfec6ded1a7e097bb95279e521a796129.tar.gz linux-3.10-bec0806cfec6ded1a7e097bb95279e521a796129.tar.bz2 linux-3.10-bec0806cfec6ded1a7e097bb95279e521a796129.zip | |
spi_s3c24xx: add FIQ pseudo-DMA support
Add pseudo-DMA by FIQ to the S3C24XX SPI driver. This allows the driver
to get DMA-like performance where there are either no free DMA channels or
when doing transfers that required both TX and RX data paths.
Since this patch requires the addition of an assembly file to hold the FIQ
code, we rename the module (instead of adding a rename of the .c file to
this patch). We expect most users are loading this via udev and thus
there should be no change to the userland configuration.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-s3c2410/include/mach/spi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/include/mach/spi.h b/arch/arm/mach-s3c2410/include/mach/spi.h index 193b39d654e..4d9588373aa 100644 --- a/arch/arm/mach-s3c2410/include/mach/spi.h +++ b/arch/arm/mach-s3c2410/include/mach/spi.h @@ -18,6 +18,8 @@ struct s3c2410_spi_info { unsigned int num_cs; /* total chipselects */ int bus_num; /* bus number to use. */ + unsigned int use_fiq:1; /* use fiq */ + void (*gpio_setup)(struct s3c2410_spi_info *spi, int enable); void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol); }; |