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| author | Viresh KUMAR <viresh.kumar@st.com> | 2011-03-04 13:12:51 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-03-06 22:42:28 +0300 |
| commit | ee66509d7f354eecb45ac99f21ea6aa8650dea7e (patch) | |
| tree | 206438e7c0ef9a7f0633fe44d6f306fdbf4b0b4e /drivers/dma/dw_dmac_regs.h | |
| parent | 59c22fc11d12b69da36c6585a38229863ba0bb16 (diff) | |
| download | linux-ee66509d7f354eecb45ac99f21ea6aa8650dea7e.tar.xz | |
dw_dmac: Allow src/dst msize & flow controller to be configured at runtime
Msize or Burst Size is peripheral dependent in case of prep_slave_sg and
cyclic_prep transfers, and in case of memcpy transfers it is platform dependent.
So msize configuration must come from platform data.
Also some peripherals (ex: JPEG), need to be flow controller for dma transfers,
so this information in case of slave_sg & cyclic_prep transfers must come from
platform data.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/dw_dmac_regs.h')
| -rw-r--r-- | drivers/dma/dw_dmac_regs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h index 6a8e6d35f359..9a32964bf795 100644 --- a/drivers/dma/dw_dmac_regs.h +++ b/drivers/dma/dw_dmac_regs.h @@ -86,6 +86,7 @@ struct dw_dma_regs { #define DWC_CTLL_SRC_MSIZE(n) ((n)<<14) #define DWC_CTLL_S_GATH_EN (1 << 17) /* src gather, !FIX */ #define DWC_CTLL_D_SCAT_EN (1 << 18) /* dst scatter, !FIX */ +#define DWC_CTLL_FC(n) ((n) << 20) #define DWC_CTLL_FC_M2M (0 << 20) /* mem-to-mem */ #define DWC_CTLL_FC_M2P (1 << 20) /* mem-to-periph */ #define DWC_CTLL_FC_P2M (2 << 20) /* periph-to-mem */ |