diff options
Diffstat (limited to 'drivers/usb/dwc2/core.h')
| -rw-r--r-- | drivers/usb/dwc2/core.h | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 3c58d633ce80..9fae0291cd69 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -64,6 +64,17 @@ DWC2_TRACE_SCHEDULER_VB(pr_fmt("%s: SCH: " fmt), \ dev_name(hsotg->dev), ##__VA_ARGS__) +#ifdef CONFIG_MIPS +/* + * There are some MIPS machines that can run in either big-endian + * or little-endian mode and that use the dwc2 register without + * a byteswap in both ways. + * Unlike other architectures, MIPS apparently does not require a + * barrier before the __raw_writel() to synchronize with DMA but does + * require the barrier after the __raw_writel() to serialize a set of + * writes. This set of operations was added specifically for MIPS and + * should only be used there. + */ static inline u32 dwc2_readl(const void __iomem *addr) { u32 value = __raw_readl(addr); @@ -90,6 +101,22 @@ static inline void dwc2_writel(u32 value, void __iomem *addr) pr_info("INFO:: wrote %08x to %p\n", value, addr); #endif } +#else +/* Normal architectures just use readl/write */ +static inline u32 dwc2_readl(const void __iomem *addr) +{ + return readl(addr); +} + +static inline void dwc2_writel(u32 value, void __iomem *addr) +{ + writel(value, addr); + +#ifdef DWC2_LOG_WRITES + pr_info("info:: wrote %08x to %p\n", value, addr); +#endif +} +#endif /* Maximum number of Endpoints/HostChannels */ #define MAX_EPS_CHANNELS 16 @@ -139,7 +166,7 @@ struct dwc2_hsotg_req; * means that it is sending data to the Host. * @index: The index for the endpoint registers. * @mc: Multi Count - number of transactions per microframe - * @interval - Interval for periodic endpoints + * @interval - Interval for periodic endpoints, in frames or microframes. * @name: The name array passed to the USB core. * @halted: Set if the endpoint has been halted. * @periodic: Set if this is a periodic ep, such as Interrupt @@ -150,6 +177,8 @@ struct dwc2_hsotg_req; * @fifo_load: The amount of data loaded into the FIFO (periodic IN) * @last_load: The offset of data for the last start of request. * @size_loaded: The last loaded size for DxEPTSIZE for periodic IN + * @target_frame: Targeted frame num to setup next ISOC transfer + * @frame_overrun: Indicates SOF number overrun in DSTS * * This is the driver's state for each registered enpoint, allowing it * to keep track of transactions that need doing. Each endpoint has a @@ -186,7 +215,9 @@ struct dwc2_hsotg_ep { unsigned int periodic:1; unsigned int isochronous:1; unsigned int send_zlp:1; - unsigned int has_correct_parity:1; + unsigned int target_frame; +#define TARGET_FRAME_INITIAL 0xFFFFFFFF + bool frame_overrun; char name[10]; }; |