diff options
| author | Per Forlin <per.forlin@stericsson.com> | 2010-12-20 18:31:38 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2011-01-05 02:20:43 +0100 |
| commit | d49278e3351b34870cbffffc5067348a318e7b06 (patch) | |
| tree | a8569e9a24286a0bd885f96e27342e4de2fdecbb /drivers/dma/ste_dma40_ll.h | |
| parent | Linux 2.6.37-rc4 (diff) | |
| download | linux-d49278e3351b34870cbffffc5067348a318e7b06.tar.xz linux-d49278e3351b34870cbffffc5067348a318e7b06.zip | |
dmaengine: dma40: Add support to split up large elements
The maximum transfer size of the stedma40 is (64k-1) x data-width.
If the transfer size of one element exceeds this limit
the job is split up and sent as linked transfer.
Signed-off-by: Per Forlin <per.forlin@linaro.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40_ll.h')
| -rw-r--r-- | drivers/dma/ste_dma40_ll.h | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/drivers/dma/ste_dma40_ll.h b/drivers/dma/ste_dma40_ll.h index 9e419b907544..9cc43495bea2 100644 --- a/drivers/dma/ste_dma40_ll.h +++ b/drivers/dma/ste_dma40_ll.h @@ -292,18 +292,20 @@ int d40_phy_sg_to_lli(struct scatterlist *sg, struct d40_phy_lli *lli, dma_addr_t lli_phys, u32 reg_cfg, - u32 data_width, + u32 data_width1, + u32 data_width2, int psize); -int d40_phy_fill_lli(struct d40_phy_lli *lli, - dma_addr_t data, - u32 data_size, - int psize, - dma_addr_t next_lli, - u32 reg_cfg, - bool term_int, - u32 data_width, - bool is_device); +struct d40_phy_lli *d40_phy_buf_to_lli(struct d40_phy_lli *lli, + dma_addr_t data, + u32 data_size, + int psize, + dma_addr_t next_lli, + u32 reg_cfg, + bool term_int, + u32 data_width1, + u32 data_width2, + bool is_device); void d40_phy_lli_write(void __iomem *virtbase, u32 phy_chan_num, @@ -312,12 +314,12 @@ void d40_phy_lli_write(void __iomem *virtbase, /* Logical channels */ -void d40_log_fill_lli(struct d40_log_lli *lli, - dma_addr_t data, - u32 data_size, - u32 reg_cfg, - u32 data_width, - bool addr_inc); +struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg, + dma_addr_t addr, + int size, + u32 lcsp13, /* src or dst*/ + u32 data_width1, u32 data_width2, + bool addr_inc); int d40_log_sg_to_dev(struct scatterlist *sg, int sg_len, @@ -332,7 +334,7 @@ int d40_log_sg_to_lli(struct scatterlist *sg, int sg_len, struct d40_log_lli *lli_sg, u32 lcsp13, /* src or dst*/ - u32 data_width); + u32 data_width1, u32 data_width2); void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa, struct d40_log_lli *lli_dst, |