diff options
Diffstat (limited to 'drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h')
| -rw-r--r-- | drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h b/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h index ca923ff2bef9..78917400492c 100644 --- a/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h +++ b/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h @@ -27,7 +27,7 @@ /** * THC DMA channels: - * @THC_RXDMA1: legacy channel, reserved for raw data reading + * @THC_RXDMA1: Legacy channel, reserved for raw data reading * @THC_RXDMA2: DMA to read HID data from touch device * @THC_TXDMA: DMA to write to touch device * @THC_SWDMA: SW triggered DMA to write and read from touch device @@ -42,11 +42,11 @@ enum thc_dma_channel { /** * THC DMA Physical Memory Descriptor (PRD) - * @dest_addr: bit[53:0], destination address in system memory - * @int_on_completion: bit[63], if set, thc will trigger interrupt to driver - * @len: bit[87:64], length of this entry - * @end_of_prd: bit[88], if set, this entry is last one of current PRD table - * @hw_status: bit[90:89], hw status bits + * @dest_addr: Bit[53:0], destination address in system memory + * @int_on_completion: Bit[63], if set, thc will trigger interrupt to driver + * @len: Bit[87:64], length of this entry + * @end_of_prd: Bit[88], if set, this entry is last one of current PRD table + * @hw_status: Bit[90:89], hardware status bits */ struct thc_prd_entry { u64 dest_addr : 54; @@ -88,14 +88,14 @@ struct thc_prd_table { * struct thc_dma_configuration - THC DMA configure * @dma_channel: DMA channel for current DMA configuration * @prd_tbls_dma_handle: DMA buffer handle - * @dir: direction of DMA for this config + * @dir: Direction of DMA for this config * @prd_tbls: PRD tables for current DMA - * @sgls: array of pointers to scatter-gather lists - * @sgls_nent: actual number of entries per sg list - * @prd_tbl_num: actual number of PRD tables - * @max_packet_size: size of the buffer needed for 1 DMA message (1 PRD table) + * @sgls: Array of pointers to scatter-gather lists + * @sgls_nent: Actual number of entries per scatter-gather list + * @prd_tbl_num: Actual number of PRD tables + * @max_packet_size: Size of the buffer needed for 1 DMA message (1 PRD table) * @prd_base_addr_high: High 32bits memory address where stores PRD table - * @prd_base_addr_low: low 32bits memory address where stores PRD table + * @prd_base_addr_low: Low 32bits memory address where stores PRD table * @prd_cntrl: PRD control register value * @dma_cntrl: DMA control register value */ @@ -117,13 +117,21 @@ struct thc_dma_configuration { u32 dma_cntrl; }; -/* - * THC DMA context - * Store all THC Channel configures +/** + * struct thc_dma_context - THC DMA context + * @thc_dma_configuration: Array of all THC Channel configures + * @use_write_interrupts: Indicate TxDMA using interrupt or polling + * @rx_max_size_en: Temp flag to indicate THC I2C Rx max input size control feature + * enabled or not, only be used during SWDMA operation. + * @rx_int_delay_en: Temp flag to indicate THC I2C Rx interrupt delay feature + * enabled or not, only be used during SWDMA operation. */ struct thc_dma_context { struct thc_dma_configuration dma_config[MAX_THC_DMA_CHANNEL]; u8 use_write_interrupts; + + bool rx_max_size_en; + bool rx_int_delay_en; }; struct thc_device; |