From fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20 Mon Sep 17 00:00:00 2001 From: Mian Yousaf Kaukab Date: Fri, 20 Nov 2015 11:49:28 +0100 Subject: usb: dwc2: host: enable descriptor dma for fs devices As descriptor dma mode does not support split transfers, it can't be enabled for high speed devices. Add a core parameter to enable it for full speed devices. Ensure frame list and descriptor list are correctly freed during disconnect. Acked-by: John Youn Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/usb/dwc2/core.h') diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index a66d3cb62b65..fd4c2365069a 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -246,6 +246,13 @@ enum dwc2_ep0_state { * value for this if none is specified. * 0 - Address DMA * 1 - Descriptor DMA (default, if available) + * @dma_desc_fs_enable: When DMA mode is enabled, specifies whether to use + * address DMA mode or descriptor DMA mode for accessing + * the data FIFOs in Full Speed mode only. The driver + * will automatically detect the value for this if none is + * specified. + * 0 - Address DMA + * 1 - Descriptor DMA in FS (default, if available) * @speed: Specifies the maximum speed of operation in host and * device mode. The actual speed depends on the speed of * the attached device and the value of phy_type. @@ -375,6 +382,7 @@ struct dwc2_core_params { int otg_ver; int dma_enable; int dma_desc_enable; + int dma_desc_fs_enable; int speed; int enable_dynamic_fifo; int en_multiple_tx_fifo; @@ -456,6 +464,7 @@ struct dwc2_hw_params { unsigned op_mode:3; unsigned arch:2; unsigned dma_desc_enable:1; + unsigned dma_desc_fs_enable:1; unsigned enable_dynamic_fifo:1; unsigned en_multiple_tx_fifo:1; unsigned host_rx_fifo_size:16; @@ -770,6 +779,7 @@ struct dwc2_hsotg { u16 frame_number; u16 periodic_qh_count; bool bus_suspended; + bool new_connection; #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS #define FRAME_NUM_ARRAY_SIZE 1000 @@ -941,6 +951,16 @@ extern void dwc2_set_param_dma_enable(struct dwc2_hsotg *hsotg, int val); */ extern void dwc2_set_param_dma_desc_enable(struct dwc2_hsotg *hsotg, int val); +/* + * When DMA mode is enabled specifies whether to use + * address DMA or DMA Descritor mode with full speed devices + * for accessing the data FIFOs in host mode. + * 0 - address DMA + * 1 - FS DMA Descriptor(default, if available) + */ +extern void dwc2_set_param_dma_desc_fs_enable(struct dwc2_hsotg *hsotg, + int val); + /* * Specifies the maximum speed of operation in host and device mode. * The actual speed depends on the speed of the attached device and -- cgit v1.2.3