From d49278e3351b34870cbffffc5067348a318e7b06 Mon Sep 17 00:00:00 2001 From: Per Forlin Date: Mon, 20 Dec 2010 18:31:38 +0100 Subject: 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 Signed-off-by: Dan Williams --- drivers/dma/ste_dma40_ll.h | 36 +++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 17 deletions(-) (limited to 'drivers/dma/ste_dma40_ll.h') 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, -- cgit v1.2.2