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| author | Pandith N <pandith.n@intel.com> | 2021-08-02 11:24:52 +0530 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-08-02 12:19:51 +0530 |
| commit | 32286e2793858a8491c2276b2754e9850467bb6b (patch) | |
| tree | d5f48d273c382cb022ad36c9977b00deb53cdd32 /drivers/dma/dw-axi-dmac/dw-axi-dmac.h | |
| parent | 5eea6c9712bd2a707216d7b923090510d60f9663 (diff) | |
| download | linux-stable-32286e2793858a8491c2276b2754e9850467bb6b.tar.gz linux-stable-32286e2793858a8491c2276b2754e9850467bb6b.tar.bz2 linux-stable-32286e2793858a8491c2276b2754e9850467bb6b.zip | |
dmaengine: dw-axi-dmac: Remove free slot check algorithm in dw_axi_dma_set_hw_channel
Removed free slot check algorithm in dw_axi_dma_set_hw_channel. For 8
DMA channels, use respective handshake slot in DMA_HS_SEL APB register.
For every channel, an dedicated slot is provided in hardware handshake
register AXIDMA_CTRL_DMA_HS_SEL_n. Peripheral source number is
programmed in respective channel slots.
Signed-off-by: Pandith N <pandith.n@intel.com>
Tested-by: Pan Kris <kris.pan@intel.com>
Link: https://lore.kernel.org/r/20210802055454.15192-2-pandith.n@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/dw-axi-dmac/dw-axi-dmac.h')
| -rw-r--r-- | drivers/dma/dw-axi-dmac/dw-axi-dmac.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h index b69897887c76..358f553cafe9 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h @@ -184,6 +184,8 @@ static inline struct axi_dma_chan *dchan_to_axi_dma_chan(struct dma_chan *dchan) #define DMAC_APB_HALFWORD_WR_CH_EN 0x020 /* DMAC Halfword write enables */ #define UNUSED_CHANNEL 0x3F /* Set unused DMA channel to 0x3F */ +#define DMA_APB_HS_SEL_BIT_SIZE 0x08 /* HW handshake bits per channel */ +#define DMA_APB_HS_SEL_MASK 0xFF /* HW handshake select masks */ #define MAX_BLOCK_SIZE 0x1000 /* 1024 blocks * 4 bytes data width */ /* DMAC_CFG */ |