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 <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index a66d3cb..fd4c236 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -246,6 +246,13 @@
* 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 @@
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 @@
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 @@
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
@@ -942,6 +952,16 @@
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
* the value of phy_type. The actual speed depends on the speed of the