diff options
| author | Feng Tang <feng.tang@intel.com> | 2010-01-20 13:49:45 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-01-20 13:49:45 -0700 |
| commit | 552e450929a7298cc8834fd2824a60b2e914f70e (patch) | |
| tree | 1b9568370d1b40f23dd4d73765e98ff74665eb07 /include/linux/spi | |
| parent | 51f921c1eb1124fb99ab0728c19e8e14c82c81be (diff) | |
| download | kernel_samsung_smdk4412-552e450929a7298cc8834fd2824a60b2e914f70e.zip kernel_samsung_smdk4412-552e450929a7298cc8834fd2824a60b2e914f70e.tar.gz kernel_samsung_smdk4412-552e450929a7298cc8834fd2824a60b2e914f70e.tar.bz2 | |
spi/dw_spi: refine the IRQ mode working flow
Now dw_spi core fully supports 3 transfer modes: pure polling,
DMA and IRQ mode. IRQ mode will use the FIFO half empty as
the IRQ trigger, so each interface driver need set the fifo_len,
so that core driver can handle it properly
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/dw_spi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h index 51b3e77..1a127a3 100644 --- a/include/linux/spi/dw_spi.h +++ b/include/linux/spi/dw_spi.h @@ -90,6 +90,7 @@ struct dw_spi { unsigned long paddr; u32 iolen; int irq; + u32 fifo_len; /* depth of the FIFO buffer */ u32 max_freq; /* max bus freq supported */ u16 bus_num; |