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| author | Frank Li <Frank.Li@nxp.com> | 2023-12-21 18:35:23 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-02-07 11:40:17 +0300 |
| commit | 5dc604455dcf20bdca639bf6b8ea2ea60d39c022 (patch) | |
| tree | d9d7d58537ec92c72588bb26a135b0b135404f89 /drivers/dma/fsl-edma-common.h | |
| parent | d2363272ef9f96709ec1a146bb66378256c92e1d (diff) | |
| download | linux-5dc604455dcf20bdca639bf6b8ea2ea60d39c022.tar.xz | |
dmaengine: fsl-edma: involve help macro fsl_edma_set(get)_tcd()
Using help macro fsl_edma_set(get)_tcd() and edma_cp_tcd_to_reg() to handle
difference field size. This is not function change and prepare for 64bit
tcd in imx95.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231221153528.1588049-2-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/fsl-edma-common.h')
| -rw-r--r-- | drivers/dma/fsl-edma-common.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index bb5221158a77..ce779274d81e 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -238,6 +238,9 @@ struct fsl_edma_engine { edma_writel(chan->edma, (u32 __force)val, &chan->tcd->__name) : \ edma_writew(chan->edma, (u16 __force)val, &chan->tcd->__name)) +#define edma_cp_tcd_to_reg(chan, __tcd, __name) \ + edma_write_tcdreg(chan, __tcd->__name, __name) + #define edma_readl_chreg(chan, __name) \ edma_readl(chan->edma, \ (void __iomem *)&(container_of(chan->tcd, struct fsl_edma3_ch_reg, tcd)->__name)) @@ -246,6 +249,26 @@ struct fsl_edma_engine { edma_writel(chan->edma, val, \ (void __iomem *)&(container_of(chan->tcd, struct fsl_edma3_ch_reg, tcd)->__name)) +#define fsl_edma_get_tcd(_chan, _tcd, _field) ((_tcd)->_field) + +#define fsl_edma_le_to_cpu(x) \ +(sizeof(x) == sizeof(u32) ? le32_to_cpu((__force __le32)(x)) : le16_to_cpu((__force __le16)(x))) + +#define fsl_edma_get_tcd_to_cpu(_chan, _tcd, _field) \ +fsl_edma_le_to_cpu(fsl_edma_get_tcd(_chan, _tcd, _field)) + +#define fsl_edma_set_tcd_to_le(_fsl_chan, _tcd, _val, _field) \ +do { \ + switch (sizeof((_tcd)->_field)) { \ + case sizeof(u32): \ + *(__force __le32 *)(&((_tcd)->_field)) = cpu_to_le32(_val); \ + break; \ + case sizeof(u16): \ + *(__force __le16 *)(&((_tcd)->_field)) = cpu_to_le16(_val); \ + break; \ + } \ +} while (0) + /* * R/W functions for big- or little-endian registers: * The eDMA controller's endian is independent of the CPU core's endian. |