diff options
Diffstat (limited to 'include/linux/platform_data/dma-ste-dma40.h')
| -rw-r--r-- | include/linux/platform_data/dma-ste-dma40.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h index 9ff93b065686..4b781014b0a0 100644 --- a/include/linux/platform_data/dma-ste-dma40.h +++ b/include/linux/platform_data/dma-ste-dma40.h @@ -147,6 +147,16 @@ struct stedma40_chan_cfg { * @memcpy_conf_log: default configuration of logical channel memcpy * @disabled_channels: A vector, ending with -1, that marks physical channels * that are for different reasons not available for the driver. + * @soft_lli_chans: A vector, that marks physical channels will use LLI by SW + * which avoids HW bug that exists in some versions of the controller. + * SoftLLI introduces relink overhead that could impact performace for + * certain use cases. + * @num_of_soft_lli_chans: The number of channels that needs to be configured + * to use SoftLLI. + * @use_esram_lcla: flag for mapping the lcla into esram region + * @num_of_phy_chans: The number of physical channels implemented in HW. + * 0 means reading the number of channels from DMA HW but this is only valid + * for 'multiple of 4' channels, like 8. */ struct stedma40_platform_data { u32 dev_len; @@ -157,7 +167,10 @@ struct stedma40_platform_data { struct stedma40_chan_cfg *memcpy_conf_phy; struct stedma40_chan_cfg *memcpy_conf_log; int disabled_channels[STEDMA40_MAX_PHYS]; + int *soft_lli_chans; + int num_of_soft_lli_chans; bool use_esram_lcla; + int num_of_phy_chans; }; #ifdef CONFIG_STE_DMA40 |