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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-18 20:21:49 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-18 20:21:49 +0300 |
commit | 5695d5d1970f975de059bb6dec76941440f62488 (patch) | |
tree | 6b03381a0b103324c286a83ebb4154719b514feb /drivers/usb/dwc2/core.h | |
parent | 1f7a4c73a739a63b3f108d8eda6f947fdc70dd65 (diff) | |
parent | 29c692c96b3a39cd1911fb79cd2505af8d070f07 (diff) | |
download | linux-5695d5d1970f975de059bb6dec76941440f62488.tar.xz |
Merge tag 'usb-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB and phy driver patch set for 4.19-rc1.
Nothing huge but there was a lot of work that happened this
development cycle:
- lots of type-c work, with drivers graduating out of staging, and
displayport support being added.
- new PHY drivers
- the normal collection of gadget driver updates and fixes
- code churn to work on the urb handling path, using irqsave()
everywhere in anticipation of making this codepath a lot simpler in
the future.
- usbserial driver fixes and reworks
- other misc changes
All of these have been in linux-next with no reported issues for a
while"
* tag 'usb-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (159 commits)
USB: serial: pl2303: add a new device id for ATEN
usb: renesas_usbhs: Kconfig: convert to SPDX identifiers
usb: dwc3: gadget: Check MaxPacketSize from descriptor
usb: dwc2: Turn on uframe_sched on "stm32f4x9_fsotg" platforms
usb: dwc2: Turn on uframe_sched on "amlogic" platforms
usb: dwc2: Turn on uframe_sched on "his" platforms
usb: dwc2: Turn on uframe_sched on "bcm" platforms
usb: dwc2: gadget: ISOC's starting flow improvement
usb: dwc2: Make dwc2_readl/writel functions endianness-agnostic.
usb: dwc3: core: Enable AutoRetry feature in the controller
usb: dwc3: Set default mode for dwc_usb31
usb: gadget: udc: renesas_usb3: Add register of usb role switch
usb: dwc2: replace ioread32/iowrite32_rep with dwc2_readl/writel_rep
usb: dwc2: Modify dwc2_readl/writel functions prototype
usb: dwc3: pci: Intel Merrifield can be host
usb: dwc3: pci: Supply device properties via driver data
arm64: dts: dwc3: description of incr burst type
usb: dwc3: Enable undefined length INCR burst type
usb: dwc3: add global soc bus configuration reg0
usb: dwc3: Describe 'wakeup_work' field of struct dwc3_pci
...
Diffstat (limited to 'drivers/usb/dwc2/core.h')
-rw-r--r-- | drivers/usb/dwc2/core.h | 109 |
1 files changed, 53 insertions, 56 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 71b3b08ad516..cc9c93affa14 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -65,60 +65,6 @@ 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); - - /* In order to preserve endianness __raw_* operation is used. Therefore - * a barrier is needed to ensure IO access is not re-ordered across - * reads or writes - */ - mb(); - return value; -} - -static inline void dwc2_writel(u32 value, void __iomem *addr) -{ - __raw_writel(value, addr); - - /* - * In order to preserve endianness __raw_* operation is used. Therefore - * a barrier is needed to ensure IO access is not re-ordered across - * reads or writes - */ - mb(); -#ifdef DWC2_LOG_WRITES - 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 @@ -911,6 +857,7 @@ struct dwc2_hregs_backup { * @gr_backup: Backup of global registers during suspend * @dr_backup: Backup of device registers during suspend * @hr_backup: Backup of host registers during suspend + * @needs_byte_swap: Specifies whether the opposite endianness. * * These are for host mode: * @@ -1100,6 +1047,7 @@ struct dwc2_hsotg { struct dentry *debug_root; struct debugfs_regset32 *regset; + bool needs_byte_swap; /* DWC OTG HW Release versions */ #define DWC2_CORE_REV_2_71a 0x4f54271a @@ -1215,6 +1163,55 @@ struct dwc2_hsotg { #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */ }; +/* Normal architectures just use readl/write */ +static inline u32 dwc2_readl(struct dwc2_hsotg *hsotg, u32 offset) +{ + u32 val; + + val = readl(hsotg->regs + offset); + if (hsotg->needs_byte_swap) + return swab32(val); + else + return val; +} + +static inline void dwc2_writel(struct dwc2_hsotg *hsotg, u32 value, u32 offset) +{ + if (hsotg->needs_byte_swap) + writel(swab32(value), hsotg->regs + offset); + else + writel(value, hsotg->regs + offset); + +#ifdef DWC2_LOG_WRITES + pr_info("info:: wrote %08x to %p\n", value, hsotg->regs + offset); +#endif +} + +static inline void dwc2_readl_rep(struct dwc2_hsotg *hsotg, u32 offset, + void *buffer, unsigned int count) +{ + if (count) { + u32 *buf = buffer; + + do { + u32 x = dwc2_readl(hsotg, offset); + *buf++ = x; + } while (--count); + } +} + +static inline void dwc2_writel_rep(struct dwc2_hsotg *hsotg, u32 offset, + const void *buffer, unsigned int count) +{ + if (count) { + const u32 *buf = buffer; + + do { + dwc2_writel(hsotg, *buf++, offset); + } while (--count); + } +} + /* Reasons for halting a host channel */ enum dwc2_halt_status { DWC2_HC_XFER_NO_HALT_STATUS, @@ -1320,12 +1317,12 @@ bool dwc2_hw_is_device(struct dwc2_hsotg *hsotg); */ static inline int dwc2_is_host_mode(struct dwc2_hsotg *hsotg) { - return (dwc2_readl(hsotg->regs + GINTSTS) & GINTSTS_CURMODE_HOST) != 0; + return (dwc2_readl(hsotg, GINTSTS) & GINTSTS_CURMODE_HOST) != 0; } static inline int dwc2_is_device_mode(struct dwc2_hsotg *hsotg) { - return (dwc2_readl(hsotg->regs + GINTSTS) & GINTSTS_CURMODE_HOST) == 0; + return (dwc2_readl(hsotg, GINTSTS) & GINTSTS_CURMODE_HOST) == 0; } /* |