diff options
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 1554 |
1 files changed, 1554 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h new file mode 100644 index 000000000..291893d27 --- /dev/null +++ b/drivers/usb/dwc3/core.h @@ -0,0 +1,1554 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * core.h - DesignWare USB3 DRD Core Header + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com + * + * Authors: Felipe Balbi <balbi@ti.com>, + * Sebastian Andrzej Siewior <bigeasy@linutronix.de> + */ + +#ifndef __DRIVERS_USB_DWC3_CORE_H +#define __DRIVERS_USB_DWC3_CORE_H + +#include <linux/device.h> +#include <linux/spinlock.h> +#include <linux/mutex.h> +#include <linux/ioport.h> +#include <linux/list.h> +#include <linux/bitops.h> +#include <linux/dma-mapping.h> +#include <linux/mm.h> +#include <linux/debugfs.h> +#include <linux/wait.h> +#include <linux/workqueue.h> + +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/usb/otg.h> +#include <linux/usb/role.h> +#include <linux/ulpi/interface.h> + +#include <linux/phy/phy.h> + +#define DWC3_MSG_MAX 500 + +/* Global constants */ +#define DWC3_PULL_UP_TIMEOUT 500 /* ms */ +#define DWC3_BOUNCE_SIZE 1024 /* size of a superspeed bulk */ +#define DWC3_EP0_SETUP_SIZE 512 +#define DWC3_ENDPOINTS_NUM 32 +#define DWC3_XHCI_RESOURCES_NUM 2 +#define DWC3_ISOC_MAX_RETRIES 5 + +#define DWC3_SCRATCHBUF_SIZE 4096 /* each buffer is assumed to be 4KiB */ +#define DWC3_EVENT_BUFFERS_SIZE 4096 +#define DWC3_EVENT_TYPE_MASK 0xfe + +#define DWC3_EVENT_TYPE_DEV 0 +#define DWC3_EVENT_TYPE_CARKIT 3 +#define DWC3_EVENT_TYPE_I2C 4 + +#define DWC3_DEVICE_EVENT_DISCONNECT 0 +#define DWC3_DEVICE_EVENT_RESET 1 +#define DWC3_DEVICE_EVENT_CONNECT_DONE 2 +#define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3 +#define DWC3_DEVICE_EVENT_WAKEUP 4 +#define DWC3_DEVICE_EVENT_HIBER_REQ 5 +#define DWC3_DEVICE_EVENT_EOPF 6 +#define DWC3_DEVICE_EVENT_SOF 7 +#define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9 +#define DWC3_DEVICE_EVENT_CMD_CMPL 10 +#define DWC3_DEVICE_EVENT_OVERFLOW 11 + +/* Controller's role while using the OTG block */ +#define DWC3_OTG_ROLE_IDLE 0 +#define DWC3_OTG_ROLE_HOST 1 +#define DWC3_OTG_ROLE_DEVICE 2 + +#define DWC3_GEVNTCOUNT_MASK 0xfffc +#define DWC3_GEVNTCOUNT_EHB BIT(31) +#define DWC3_GSNPSID_MASK 0xffff0000 +#define DWC3_GSNPSREV_MASK 0xffff +#define DWC3_GSNPS_ID(p) (((p) & DWC3_GSNPSID_MASK) >> 16) + +/* DWC3 registers memory space boundries */ +#define DWC3_XHCI_REGS_START 0x0 +#define DWC3_XHCI_REGS_END 0x7fff +#define DWC3_GLOBALS_REGS_START 0xc100 +#define DWC3_GLOBALS_REGS_END 0xc6ff +#define DWC3_DEVICE_REGS_START 0xc700 +#define DWC3_DEVICE_REGS_END 0xcbff +#define DWC3_OTG_REGS_START 0xcc00 +#define DWC3_OTG_REGS_END 0xccff + +/* Global Registers */ +#define DWC3_GSBUSCFG0 0xc100 +#define DWC3_GSBUSCFG1 0xc104 +#define DWC3_GTXTHRCFG 0xc108 +#define DWC3_GRXTHRCFG 0xc10c +#define DWC3_GCTL 0xc110 +#define DWC3_GEVTEN 0xc114 +#define DWC3_GSTS 0xc118 +#define DWC3_GUCTL1 0xc11c +#define DWC3_GSNPSID 0xc120 +#define DWC3_GGPIO 0xc124 +#define DWC3_GUID 0xc128 +#define DWC3_GUCTL 0xc12c +#define DWC3_GBUSERRADDR0 0xc130 +#define DWC3_GBUSERRADDR1 0xc134 +#define DWC3_GPRTBIMAP0 0xc138 +#define DWC3_GPRTBIMAP1 0xc13c +#define DWC3_GHWPARAMS0 0xc140 +#define DWC3_GHWPARAMS1 0xc144 +#define DWC3_GHWPARAMS2 0xc148 +#define DWC3_GHWPARAMS3 0xc14c +#define DWC3_GHWPARAMS4 0xc150 +#define DWC3_GHWPARAMS5 0xc154 +#define DWC3_GHWPARAMS6 0xc158 +#define DWC3_GHWPARAMS7 0xc15c +#define DWC3_GDBGFIFOSPACE 0xc160 +#define DWC3_GDBGLTSSM 0xc164 +#define DWC3_GDBGBMU 0xc16c +#define DWC3_GDBGLSPMUX 0xc170 +#define DWC3_GDBGLSP 0xc174 +#define DWC3_GDBGEPINFO0 0xc178 +#define DWC3_GDBGEPINFO1 0xc17c +#define DWC3_GPRTBIMAP_HS0 0xc180 +#define DWC3_GPRTBIMAP_HS1 0xc184 +#define DWC3_GPRTBIMAP_FS0 0xc188 +#define DWC3_GPRTBIMAP_FS1 0xc18c +#define DWC3_GUCTL2 0xc19c + +#define DWC3_VER_NUMBER 0xc1a0 +#define DWC3_VER_TYPE 0xc1a4 + +#define DWC3_GUSB2PHYCFG(n) (0xc200 + ((n) * 0x04)) +#define DWC3_GUSB2I2CCTL(n) (0xc240 + ((n) * 0x04)) + +#define DWC3_GUSB2PHYACC(n) (0xc280 + ((n) * 0x04)) + +#define DWC3_GUSB3PIPECTL(n) (0xc2c0 + ((n) * 0x04)) + +#define DWC3_GTXFIFOSIZ(n) (0xc300 + ((n) * 0x04)) +#define DWC3_GRXFIFOSIZ(n) (0xc380 + ((n) * 0x04)) + +#define DWC3_GEVNTADRLO(n) (0xc400 + ((n) * 0x10)) +#define DWC3_GEVNTADRHI(n) (0xc404 + ((n) * 0x10)) +#define DWC3_GEVNTSIZ(n) (0xc408 + ((n) * 0x10)) +#define DWC3_GEVNTCOUNT(n) (0xc40c + ((n) * 0x10)) + +#define DWC3_GHWPARAMS8 0xc600 +#define DWC3_GUCTL3 0xc60c +#define DWC3_GFLADJ 0xc630 + +/* Device Registers */ +#define DWC3_DCFG 0xc700 +#define DWC3_DCTL 0xc704 +#define DWC3_DEVTEN 0xc708 +#define DWC3_DSTS 0xc70c +#define DWC3_DGCMDPAR 0xc710 +#define DWC3_DGCMD 0xc714 +#define DWC3_DALEPENA 0xc720 + +#define DWC3_DEP_BASE(n) (0xc800 + ((n) * 0x10)) +#define DWC3_DEPCMDPAR2 0x00 +#define DWC3_DEPCMDPAR1 0x04 +#define DWC3_DEPCMDPAR0 0x08 +#define DWC3_DEPCMD 0x0c + +#define DWC3_DEV_IMOD(n) (0xca00 + ((n) * 0x4)) + +/* OTG Registers */ +#define DWC3_OCFG 0xcc00 +#define DWC3_OCTL 0xcc04 +#define DWC3_OEVT 0xcc08 +#define DWC3_OEVTEN 0xcc0C +#define DWC3_OSTS 0xcc10 + +/* Bit fields */ + +/* Global SoC Bus Configuration INCRx Register 0 */ +#define DWC3_GSBUSCFG0_INCR256BRSTENA (1 << 7) /* INCR256 burst */ +#define DWC3_GSBUSCFG0_INCR128BRSTENA (1 << 6) /* INCR128 burst */ +#define DWC3_GSBUSCFG0_INCR64BRSTENA (1 << 5) /* INCR64 burst */ +#define DWC3_GSBUSCFG0_INCR32BRSTENA (1 << 4) /* INCR32 burst */ +#define DWC3_GSBUSCFG0_INCR16BRSTENA (1 << 3) /* INCR16 burst */ +#define DWC3_GSBUSCFG0_INCR8BRSTENA (1 << 2) /* INCR8 burst */ +#define DWC3_GSBUSCFG0_INCR4BRSTENA (1 << 1) /* INCR4 burst */ +#define DWC3_GSBUSCFG0_INCRBRSTENA (1 << 0) /* undefined length enable */ +#define DWC3_GSBUSCFG0_INCRBRST_MASK 0xff + +/* Global Debug LSP MUX Select */ +#define DWC3_GDBGLSPMUX_ENDBC BIT(15) /* Host only */ +#define DWC3_GDBGLSPMUX_HOSTSELECT(n) ((n) & 0x3fff) +#define DWC3_GDBGLSPMUX_DEVSELECT(n) (((n) & 0xf) << 4) +#define DWC3_GDBGLSPMUX_EPSELECT(n) ((n) & 0xf) + +/* Global Debug Queue/FIFO Space Available Register */ +#define DWC3_GDBGFIFOSPACE_NUM(n) ((n) & 0x1f) +#define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0) +#define DWC3_GDBGFIFOSPACE_SPACE_AVAILABLE(n) (((n) >> 16) & 0xffff) + +#define DWC3_TXFIFO 0 +#define DWC3_RXFIFO 1 +#define DWC3_TXREQQ 2 +#define DWC3_RXREQQ 3 +#define DWC3_RXINFOQ 4 +#define DWC3_PSTATQ 5 +#define DWC3_DESCFETCHQ 6 +#define DWC3_EVENTQ 7 +#define DWC3_AUXEVENTQ 8 + +/* Global RX Threshold Configuration Register */ +#define DWC3_GRXTHRCFG_MAXRXBURSTSIZE(n) (((n) & 0x1f) << 19) +#define DWC3_GRXTHRCFG_RXPKTCNT(n) (((n) & 0xf) << 24) +#define DWC3_GRXTHRCFG_PKTCNTSEL BIT(29) + +/* Global RX Threshold Configuration Register for DWC_usb31 only */ +#define DWC31_GRXTHRCFG_MAXRXBURSTSIZE(n) (((n) & 0x1f) << 16) +#define DWC31_GRXTHRCFG_RXPKTCNT(n) (((n) & 0x1f) << 21) +#define DWC31_GRXTHRCFG_PKTCNTSEL BIT(26) +#define DWC31_RXTHRNUMPKTSEL_HS_PRD BIT(15) +#define DWC31_RXTHRNUMPKT_HS_PRD(n) (((n) & 0x3) << 13) +#define DWC31_RXTHRNUMPKTSEL_PRD BIT(10) +#define DWC31_RXTHRNUMPKT_PRD(n) (((n) & 0x1f) << 5) +#define DWC31_MAXRXBURSTSIZE_PRD(n) ((n) & 0x1f) + +/* Global TX Threshold Configuration Register for DWC_usb31 only */ +#define DWC31_GTXTHRCFG_MAXTXBURSTSIZE(n) (((n) & 0x1f) << 16) +#define DWC31_GTXTHRCFG_TXPKTCNT(n) (((n) & 0x1f) << 21) +#define DWC31_GTXTHRCFG_PKTCNTSEL BIT(26) +#define DWC31_TXTHRNUMPKTSEL_HS_PRD BIT(15) +#define DWC31_TXTHRNUMPKT_HS_PRD(n) (((n) & 0x3) << 13) +#define DWC31_TXTHRNUMPKTSEL_PRD BIT(10) +#define DWC31_TXTHRNUMPKT_PRD(n) (((n) & 0x1f) << 5) +#define DWC31_MAXTXBURSTSIZE_PRD(n) ((n) & 0x1f) + +/* Global Configuration Register */ +#define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19) +#define DWC3_GCTL_U2RSTECN BIT(16) +#define DWC3_GCTL_RAMCLKSEL(x) (((x) & DWC3_GCTL_CLK_MASK) << 6) +#define DWC3_GCTL_CLK_BUS (0) +#define DWC3_GCTL_CLK_PIPE (1) +#define DWC3_GCTL_CLK_PIPEHALF (2) +#define DWC3_GCTL_CLK_MASK (3) + +#define DWC3_GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12) +#define DWC3_GCTL_PRTCAPDIR(n) ((n) << 12) +#define DWC3_GCTL_PRTCAP_HOST 1 +#define DWC3_GCTL_PRTCAP_DEVICE 2 +#define DWC3_GCTL_PRTCAP_OTG 3 + +#define DWC3_GCTL_CORESOFTRESET BIT(11) +#define DWC3_GCTL_SOFITPSYNC BIT(10) +#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4) +#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3) +#define DWC3_GCTL_DISSCRAMBLE BIT(3) +#define DWC3_GCTL_U2EXIT_LFPS BIT(2) +#define DWC3_GCTL_GBLHIBERNATIONEN BIT(1) +#define DWC3_GCTL_DSBLCLKGTNG BIT(0) + +/* Global User Control 1 Register */ +#define DWC3_GUCTL1_PARKMODE_DISABLE_SS BIT(17) +#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28) +#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) + +/* Global Status Register */ +#define DWC3_GSTS_OTG_IP BIT(10) +#define DWC3_GSTS_BC_IP BIT(9) +#define DWC3_GSTS_ADP_IP BIT(8) +#define DWC3_GSTS_HOST_IP BIT(7) +#define DWC3_GSTS_DEVICE_IP BIT(6) +#define DWC3_GSTS_CSR_TIMEOUT BIT(5) +#define DWC3_GSTS_BUS_ERR_ADDR_VLD BIT(4) +#define DWC3_GSTS_CURMOD(n) ((n) & 0x3) +#define DWC3_GSTS_CURMOD_DEVICE 0 +#define DWC3_GSTS_CURMOD_HOST 1 + +/* Global USB2 PHY Configuration Register */ +#define DWC3_GUSB2PHYCFG_PHYSOFTRST BIT(31) +#define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS BIT(30) +#define DWC3_GUSB2PHYCFG_SUSPHY BIT(6) +#define DWC3_GUSB2PHYCFG_ULPI_UTMI BIT(4) +#define DWC3_GUSB2PHYCFG_ENBLSLPM BIT(8) +#define DWC3_GUSB2PHYCFG_PHYIF(n) (n << 3) +#define DWC3_GUSB2PHYCFG_PHYIF_MASK DWC3_GUSB2PHYCFG_PHYIF(1) +#define DWC3_GUSB2PHYCFG_USBTRDTIM(n) (n << 10) +#define DWC3_GUSB2PHYCFG_USBTRDTIM_MASK DWC3_GUSB2PHYCFG_USBTRDTIM(0xf) +#define USBTRDTIM_UTMI_8_BIT 9 +#define USBTRDTIM_UTMI_16_BIT 5 +#define UTMI_PHYIF_16_BIT 1 +#define UTMI_PHYIF_8_BIT 0 + +/* Global USB2 PHY Vendor Control Register */ +#define DWC3_GUSB2PHYACC_NEWREGREQ BIT(25) +#define DWC3_GUSB2PHYACC_DONE BIT(24) +#define DWC3_GUSB2PHYACC_BUSY BIT(23) +#define DWC3_GUSB2PHYACC_WRITE BIT(22) +#define DWC3_GUSB2PHYACC_ADDR(n) (n << 16) +#define DWC3_GUSB2PHYACC_EXTEND_ADDR(n) (n << 8) +#define DWC3_GUSB2PHYACC_DATA(n) (n & 0xff) + +/* Global USB3 PIPE Control Register */ +#define DWC3_GUSB3PIPECTL_PHYSOFTRST BIT(31) +#define DWC3_GUSB3PIPECTL_U2SSINP3OK BIT(29) +#define DWC3_GUSB3PIPECTL_DISRXDETINP3 BIT(28) +#define DWC3_GUSB3PIPECTL_UX_EXIT_PX BIT(27) +#define DWC3_GUSB3PIPECTL_REQP1P2P3 BIT(24) +#define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19) +#define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7) +#define DWC3_GUSB3PIPECTL_DEP1P2P3_EN DWC3_GUSB3PIPECTL_DEP1P2P3(1) +#define DWC3_GUSB3PIPECTL_DEPOCHANGE BIT(18) +#define DWC3_GUSB3PIPECTL_SUSPHY BIT(17) +#define DWC3_GUSB3PIPECTL_LFPSFILT BIT(9) +#define DWC3_GUSB3PIPECTL_RX_DETOPOLL BIT(8) +#define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK DWC3_GUSB3PIPECTL_TX_DEEPH(3) +#define DWC3_GUSB3PIPECTL_TX_DEEPH(n) ((n) << 1) + +/* Global TX Fifo Size Register */ +#define DWC31_GTXFIFOSIZ_TXFRAMNUM BIT(15) /* DWC_usb31 only */ +#define DWC31_GTXFIFOSIZ_TXFDEP(n) ((n) & 0x7fff) /* DWC_usb31 only */ +#define DWC3_GTXFIFOSIZ_TXFDEP(n) ((n) & 0xffff) +#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) + +/* Global RX Fifo Size Register */ +#define DWC31_GRXFIFOSIZ_RXFDEP(n) ((n) & 0x7fff) /* DWC_usb31 only */ +#define DWC3_GRXFIFOSIZ_RXFDEP(n) ((n) & 0xffff) + +/* Global Event Size Registers */ +#define DWC3_GEVNTSIZ_INTMASK BIT(31) +#define DWC3_GEVNTSIZ_SIZE(n) ((n) & 0xffff) + +/* Global HWPARAMS0 Register */ +#define DWC3_GHWPARAMS0_MODE(n) ((n) & 0x3) +#define DWC3_GHWPARAMS0_MODE_GADGET 0 +#define DWC3_GHWPARAMS0_MODE_HOST 1 +#define DWC3_GHWPARAMS0_MODE_DRD 2 +#define DWC3_GHWPARAMS0_MBUS_TYPE(n) (((n) >> 3) & 0x7) +#define DWC3_GHWPARAMS0_SBUS_TYPE(n) (((n) >> 6) & 0x3) +#define DWC3_GHWPARAMS0_MDWIDTH(n) (((n) >> 8) & 0xff) +#define DWC3_GHWPARAMS0_SDWIDTH(n) (((n) >> 16) & 0xff) +#define DWC3_GHWPARAMS0_AWIDTH(n) (((n) >> 24) & 0xff) + +/* Global HWPARAMS1 Register */ +#define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24) +#define DWC3_GHWPARAMS1_EN_PWROPT_NO 0 +#define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1 +#define DWC3_GHWPARAMS1_EN_PWROPT_HIB 2 +#define DWC3_GHWPARAMS1_PWROPT(n) ((n) << 24) +#define DWC3_GHWPARAMS1_PWROPT_MASK DWC3_GHWPARAMS1_PWROPT(3) +#define DWC3_GHWPARAMS1_ENDBC BIT(31) + +/* Global HWPARAMS3 Register */ +#define DWC3_GHWPARAMS3_SSPHY_IFC(n) ((n) & 3) +#define DWC3_GHWPARAMS3_SSPHY_IFC_DIS 0 +#define DWC3_GHWPARAMS3_SSPHY_IFC_GEN1 1 +#define DWC3_GHWPARAMS3_SSPHY_IFC_GEN2 2 /* DWC_usb31 only */ +#define DWC3_GHWPARAMS3_HSPHY_IFC(n) (((n) & (3 << 2)) >> 2) +#define DWC3_GHWPARAMS3_HSPHY_IFC_DIS 0 +#define DWC3_GHWPARAMS3_HSPHY_IFC_UTMI 1 +#define DWC3_GHWPARAMS3_HSPHY_IFC_ULPI 2 +#define DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI 3 +#define DWC3_GHWPARAMS3_FSPHY_IFC(n) (((n) & (3 << 4)) >> 4) +#define DWC3_GHWPARAMS3_FSPHY_IFC_DIS 0 +#define DWC3_GHWPARAMS3_FSPHY_IFC_ENA 1 + +/* Global HWPARAMS4 Register */ +#define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13) +#define DWC3_MAX_HIBER_SCRATCHBUFS 15 + +/* Global HWPARAMS6 Register */ +#define DWC3_GHWPARAMS6_BCSUPPORT BIT(14) +#define DWC3_GHWPARAMS6_OTG3SUPPORT BIT(13) +#define DWC3_GHWPARAMS6_ADPSUPPORT BIT(12) +#define DWC3_GHWPARAMS6_HNPSUPPORT BIT(11) +#define DWC3_GHWPARAMS6_SRPSUPPORT BIT(10) +#define DWC3_GHWPARAMS6_EN_FPGA BIT(7) + +/* DWC_usb32 only */ +#define DWC3_GHWPARAMS6_MDWIDTH(n) ((n) & (0x3 << 8)) + +/* Global HWPARAMS7 Register */ +#define DWC3_GHWPARAMS7_RAM1_DEPTH(n) ((n) & 0xffff) +#define DWC3_GHWPARAMS7_RAM2_DEPTH(n) (((n) >> 16) & 0xffff) + +/* Global Frame Length Adjustment Register */ +#define DWC3_GFLADJ_30MHZ_SDBND_SEL BIT(7) +#define DWC3_GFLADJ_30MHZ_MASK 0x3f + +/* Global User Control Register 2 */ +#define DWC3_GUCTL2_RST_ACTBITLATER BIT(14) + +/* Global User Control Register 3 */ +#define DWC3_GUCTL3_SPLITDISABLE BIT(14) + +/* Device Configuration Register */ +#define DWC3_DCFG_DEVADDR(addr) ((addr) << 3) +#define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f) + +#define DWC3_DCFG_SPEED_MASK (7 << 0) +#define DWC3_DCFG_SUPERSPEED_PLUS (5 << 0) /* DWC_usb31 only */ +#define DWC3_DCFG_SUPERSPEED (4 << 0) +#define DWC3_DCFG_HIGHSPEED (0 << 0) +#define DWC3_DCFG_FULLSPEED BIT(0) +#define DWC3_DCFG_LOWSPEED (2 << 0) + +#define DWC3_DCFG_NUMP_SHIFT 17 +#define DWC3_DCFG_NUMP(n) (((n) >> DWC3_DCFG_NUMP_SHIFT) & 0x1f) +#define DWC3_DCFG_NUMP_MASK (0x1f << DWC3_DCFG_NUMP_SHIFT) +#define DWC3_DCFG_LPM_CAP BIT(22) + +/* Device Control Register */ +#define DWC3_DCTL_RUN_STOP BIT(31) +#define DWC3_DCTL_CSFTRST BIT(30) +#define DWC3_DCTL_LSFTRST BIT(29) + +#define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24) +#define DWC3_DCTL_HIRD_THRES(n) ((n) << 24) + +#define DWC3_DCTL_APPL1RES BIT(23) + +/* These apply for core versions 1.87a and earlier */ +#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17) +#define DWC3_DCTL_TRGTULST(n) ((n) << 17) +#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2)) +#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3)) +#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4)) +#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5)) +#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6)) + +/* These apply for core versions 1.94a and later */ +#define DWC3_DCTL_NYET_THRES(n) (((n) & 0xf) << 20) + +#define DWC3_DCTL_KEEP_CONNECT BIT(19) +#define DWC3_DCTL_L1_HIBER_EN BIT(18) +#define DWC3_DCTL_CRS BIT(17) +#define DWC3_DCTL_CSS BIT(16) + +#define DWC3_DCTL_INITU2ENA BIT(12) +#define DWC3_DCTL_ACCEPTU2ENA BIT(11) +#define DWC3_DCTL_INITU1ENA BIT(10) +#define DWC3_DCTL_ACCEPTU1ENA BIT(9) +#define DWC3_DCTL_TSTCTRL_MASK (0xf << 1) + +#define DWC3_DCTL_ULSTCHNGREQ_MASK (0x0f << 5) +#define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK) + +#define DWC3_DCTL_ULSTCHNG_NO_ACTION (DWC3_DCTL_ULSTCHNGREQ(0)) +#define DWC3_DCTL_ULSTCHNG_SS_DISABLED (DWC3_DCTL_ULSTCHNGREQ(4)) +#define DWC3_DCTL_ULSTCHNG_RX_DETECT (DWC3_DCTL_ULSTCHNGREQ(5)) +#define DWC3_DCTL_ULSTCHNG_SS_INACTIVE (DWC3_DCTL_ULSTCHNGREQ(6)) +#define DWC3_DCTL_ULSTCHNG_RECOVERY (DWC3_DCTL_ULSTCHNGREQ(8)) +#define DWC3_DCTL_ULSTCHNG_COMPLIANCE (DWC3_DCTL_ULSTCHNGREQ(10)) +#define DWC3_DCTL_ULSTCHNG_LOOPBACK (DWC3_DCTL_ULSTCHNGREQ(11)) + +/* Device Event Enable Register */ +#define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN BIT(12) +#define DWC3_DEVTEN_EVNTOVERFLOWEN BIT(11) +#define DWC3_DEVTEN_CMDCMPLTEN BIT(10) +#define DWC3_DEVTEN_ERRTICERREN BIT(9) +#define DWC3_DEVTEN_SOFEN BIT(7) +#define DWC3_DEVTEN_EOPFEN BIT(6) +#define DWC3_DEVTEN_HIBERNATIONREQEVTEN BIT(5) +#define DWC3_DEVTEN_WKUPEVTEN BIT(4) +#define DWC3_DEVTEN_ULSTCNGEN BIT(3) +#define DWC3_DEVTEN_CONNECTDONEEN BIT(2) +#define DWC3_DEVTEN_USBRSTEN BIT(1) +#define DWC3_DEVTEN_DISCONNEVTEN BIT(0) + +/* Device Status Register */ +#define DWC3_DSTS_DCNRD BIT(29) + +/* This applies for core versions 1.87a and earlier */ +#define DWC3_DSTS_PWRUPREQ BIT(24) + +/* These apply for core versions 1.94a and later */ +#define DWC3_DSTS_RSS BIT(25) +#define DWC3_DSTS_SSS BIT(24) + +#define DWC3_DSTS_COREIDLE BIT(23) +#define DWC3_DSTS_DEVCTRLHLT BIT(22) + +#define DWC3_DSTS_USBLNKST_MASK (0x0f << 18) +#define DWC3_DSTS_USBLNKST(n) (((n) & DWC3_DSTS_USBLNKST_MASK) >> 18) + +#define DWC3_DSTS_RXFIFOEMPTY BIT(17) + +#define DWC3_DSTS_SOFFN_MASK (0x3fff << 3) +#define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3) + +#define DWC3_DSTS_CONNECTSPD (7 << 0) + +#define DWC3_DSTS_SUPERSPEED_PLUS (5 << 0) /* DWC_usb31 only */ +#define DWC3_DSTS_SUPERSPEED (4 << 0) +#define DWC3_DSTS_HIGHSPEED (0 << 0) +#define DWC3_DSTS_FULLSPEED BIT(0) +#define DWC3_DSTS_LOWSPEED (2 << 0) + +/* Device Generic Command Register */ +#define DWC3_DGCMD_SET_LMP 0x01 +#define DWC3_DGCMD_SET_PERIODIC_PAR 0x02 +#define DWC3_DGCMD_XMIT_FUNCTION 0x03 + +/* These apply for core versions 1.94a and later */ +#define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO 0x04 +#define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI 0x05 + +#define DWC3_DGCMD_SELECTED_FIFO_FLUSH 0x09 +#define DWC3_DGCMD_ALL_FIFO_FLUSH 0x0a +#define DWC3_DGCMD_SET_ENDPOINT_NRDY 0x0c +#define DWC3_DGCMD_SET_ENDPOINT_PRIME 0x0d +#define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK 0x10 + +#define DWC3_DGCMD_STATUS(n) (((n) >> 12) & 0x0F) +#define DWC3_DGCMD_CMDACT BIT(10) +#define DWC3_DGCMD_CMDIOC BIT(8) + +/* Device Generic Command Parameter Register */ +#define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT BIT(0) +#define DWC3_DGCMDPAR_FIFO_NUM(n) ((n) << 0) +#define DWC3_DGCMDPAR_RX_FIFO (0 << 5) +#define DWC3_DGCMDPAR_TX_FIFO BIT(5) +#define DWC3_DGCMDPAR_LOOPBACK_DIS (0 << 0) +#define DWC3_DGCMDPAR_LOOPBACK_ENA BIT(0) + +/* Device Endpoint Command Register */ +#define DWC3_DEPCMD_PARAM_SHIFT 16 +#define DWC3_DEPCMD_PARAM(x) ((x) << DWC3_DEPCMD_PARAM_SHIFT) +#define DWC3_DEPCMD_GET_RSC_IDX(x) (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f) +#define DWC3_DEPCMD_STATUS(x) (((x) >> 12) & 0x0F) +#define DWC3_DEPCMD_HIPRI_FORCERM BIT(11) +#define DWC3_DEPCMD_CLEARPENDIN BIT(11) +#define DWC3_DEPCMD_CMDACT BIT(10) +#define DWC3_DEPCMD_CMDIOC BIT(8) + +#define DWC3_DEPCMD_DEPSTARTCFG (0x09 << 0) +#define DWC3_DEPCMD_ENDTRANSFER (0x08 << 0) +#define DWC3_DEPCMD_UPDATETRANSFER (0x07 << 0) +#define DWC3_DEPCMD_STARTTRANSFER (0x06 << 0) +#define DWC3_DEPCMD_CLEARSTALL (0x05 << 0) +#define DWC3_DEPCMD_SETSTALL (0x04 << 0) +/* This applies for core versions 1.90a and earlier */ +#define DWC3_DEPCMD_GETSEQNUMBER (0x03 << 0) +/* This applies for core versions 1.94a and later */ +#define DWC3_DEPCMD_GETEPSTATE (0x03 << 0) +#define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0) +#define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0) + +#define DWC3_DEPCMD_CMD(x) ((x) & 0xf) + +/* The EP number goes 0..31 so ep0 is always out and ep1 is always in */ +#define DWC3_DALEPENA_EP(n) BIT(n) + +#define DWC3_DEPCMD_TYPE_CONTROL 0 +#define DWC3_DEPCMD_TYPE_ISOC 1 +#define DWC3_DEPCMD_TYPE_BULK 2 +#define DWC3_DEPCMD_TYPE_INTR 3 + +#define DWC3_DEV_IMOD_COUNT_SHIFT 16 +#define DWC3_DEV_IMOD_COUNT_MASK (0xffff << 16) +#define DWC3_DEV_IMOD_INTERVAL_SHIFT 0 +#define DWC3_DEV_IMOD_INTERVAL_MASK (0xffff << 0) + +/* OTG Configuration Register */ +#define DWC3_OCFG_DISPWRCUTTOFF BIT(5) +#define DWC3_OCFG_HIBDISMASK BIT(4) +#define DWC3_OCFG_SFTRSTMASK BIT(3) +#define DWC3_OCFG_OTGVERSION BIT(2) +#define DWC3_OCFG_HNPCAP BIT(1) +#define DWC3_OCFG_SRPCAP BIT(0) + +/* OTG CTL Register */ +#define DWC3_OCTL_OTG3GOERR BIT(7) +#define DWC3_OCTL_PERIMODE BIT(6) +#define DWC3_OCTL_PRTPWRCTL BIT(5) +#define DWC3_OCTL_HNPREQ BIT(4) +#define DWC3_OCTL_SESREQ BIT(3) +#define DWC3_OCTL_TERMSELIDPULSE BIT(2) +#define DWC3_OCTL_DEVSETHNPEN BIT(1) +#define DWC3_OCTL_HSTSETHNPEN BIT(0) + +/* OTG Event Register */ +#define DWC3_OEVT_DEVICEMODE BIT(31) +#define DWC3_OEVT_XHCIRUNSTPSET BIT(27) +#define DWC3_OEVT_DEVRUNSTPSET BIT(26) +#define DWC3_OEVT_HIBENTRY BIT(25) +#define DWC3_OEVT_CONIDSTSCHNG BIT(24) +#define DWC3_OEVT_HRRCONFNOTIF BIT(23) +#define DWC3_OEVT_HRRINITNOTIF BIT(22) +#define DWC3_OEVT_ADEVIDLE BIT(21) +#define DWC3_OEVT_ADEVBHOSTEND BIT(20) +#define DWC3_OEVT_ADEVHOST BIT(19) +#define DWC3_OEVT_ADEVHNPCHNG BIT(18) +#define DWC3_OEVT_ADEVSRPDET BIT(17) +#define DWC3_OEVT_ADEVSESSENDDET BIT(16) +#define DWC3_OEVT_BDEVBHOSTEND BIT(11) +#define DWC3_OEVT_BDEVHNPCHNG BIT(10) +#define DWC3_OEVT_BDEVSESSVLDDET BIT(9) +#define DWC3_OEVT_BDEVVBUSCHNG BIT(8) +#define DWC3_OEVT_BSESSVLD BIT(3) +#define DWC3_OEVT_HSTNEGSTS BIT(2) +#define DWC3_OEVT_SESREQSTS BIT(1) +#define DWC3_OEVT_ERROR BIT(0) + +/* OTG Event Enable Register */ +#define DWC3_OEVTEN_XHCIRUNSTPSETEN BIT(27) +#define DWC3_OEVTEN_DEVRUNSTPSETEN BIT(26) +#define DWC3_OEVTEN_HIBENTRYEN BIT(25) +#define DWC3_OEVTEN_CONIDSTSCHNGEN BIT(24) +#define DWC3_OEVTEN_HRRCONFNOTIFEN BIT(23) +#define DWC3_OEVTEN_HRRINITNOTIFEN BIT(22) +#define DWC3_OEVTEN_ADEVIDLEEN BIT(21) +#define DWC3_OEVTEN_ADEVBHOSTENDEN BIT(20) +#define DWC3_OEVTEN_ADEVHOSTEN BIT(19) +#define DWC3_OEVTEN_ADEVHNPCHNGEN BIT(18) +#define DWC3_OEVTEN_ADEVSRPDETEN BIT(17) +#define DWC3_OEVTEN_ADEVSESSENDDETEN BIT(16) +#define DWC3_OEVTEN_BDEVBHOSTENDEN BIT(11) +#define DWC3_OEVTEN_BDEVHNPCHNGEN BIT(10) +#define DWC3_OEVTEN_BDEVSESSVLDDETEN BIT(9) +#define DWC3_OEVTEN_BDEVVBUSCHNGEN BIT(8) + +/* OTG Status Register */ +#define DWC3_OSTS_DEVRUNSTP BIT(13) +#define DWC3_OSTS_XHCIRUNSTP BIT(12) +#define DWC3_OSTS_PERIPHERALSTATE BIT(4) +#define DWC3_OSTS_XHCIPRTPOWER BIT(3) +#define DWC3_OSTS_BSESVLD BIT(2) +#define DWC3_OSTS_VBUSVLD BIT(1) +#define DWC3_OSTS_CONIDSTS BIT(0) + +/* Structures */ + +struct dwc3_trb; + +/** + * struct dwc3_event_buffer - Software event buffer representation + * @buf: _THE_ buffer + * @cache: The buffer cache used in the threaded interrupt + * @length: size of this buffer + * @lpos: event offset + * @count: cache of last read event count register + * @flags: flags related to this event buffer + * @dma: dma_addr_t + * @dwc: pointer to DWC controller + */ +struct dwc3_event_buffer { + void *buf; + void *cache; + unsigned int length; + unsigned int lpos; + unsigned int count; + unsigned int flags; + +#define DWC3_EVENT_PENDING BIT(0) + + dma_addr_t dma; + + struct dwc3 *dwc; +}; + +#define DWC3_EP_FLAG_STALLED BIT(0) +#define DWC3_EP_FLAG_WEDGED BIT(1) + +#define DWC3_EP_DIRECTION_TX true +#define DWC3_EP_DIRECTION_RX false + +#define DWC3_TRB_NUM 256 + +/** + * struct dwc3_ep - device side endpoint representation + * @endpoint: usb endpoint + * @cancelled_list: list of cancelled requests for this endpoint + * @pending_list: list of pending requests for this endpoint + * @started_list: list of started requests on this endpoint + * @regs: pointer to first endpoint register + * @trb_pool: array of transaction buffers + * @trb_pool_dma: dma address of @trb_pool + * @trb_enqueue: enqueue 'pointer' into TRB array + * @trb_dequeue: dequeue 'pointer' into TRB array + * @dwc: pointer to DWC controller + * @saved_state: ep state saved during hibernation + * @flags: endpoint flags (wedged, stalled, ...) + * @number: endpoint number (1 - 15) + * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK + * @resource_index: Resource transfer index + * @frame_number: set to the frame number we want this transfer to start (ISOC) + * @interval: the interval on which the ISOC transfer is started + * @name: a human readable name e.g. ep1out-bulk + * @direction: true for TX, false for RX + * @stream_capable: true when streams are enabled + * @combo_num: the test combination BIT[15:14] of the frame number to test + * isochronous START TRANSFER command failure workaround + * @start_cmd_status: the status of testing START TRANSFER command with + * combo_num = 'b00 + */ +struct dwc3_ep { + struct usb_ep endpoint; + struct list_head cancelled_list; + struct list_head pending_list; + struct list_head started_list; + + void __iomem *regs; + + struct dwc3_trb *trb_pool; + dma_addr_t trb_pool_dma; + struct dwc3 *dwc; + + u32 saved_state; + unsigned int flags; +#define DWC3_EP_ENABLED BIT(0) +#define DWC3_EP_STALL BIT(1) +#define DWC3_EP_WEDGE BIT(2) +#define DWC3_EP_TRANSFER_STARTED BIT(3) +#define DWC3_EP_END_TRANSFER_PENDING BIT(4) +#define DWC3_EP_PENDING_REQUEST BIT(5) +#define DWC3_EP_DELAY_START BIT(6) +#define DWC3_EP_WAIT_TRANSFER_COMPLETE BIT(7) +#define DWC3_EP_IGNORE_NEXT_NOSTREAM BIT(8) +#define DWC3_EP_FORCE_RESTART_STREAM BIT(9) +#define DWC3_EP_FIRST_STREAM_PRIMED BIT(10) +#define DWC3_EP_PENDING_CLEAR_STALL BIT(11) + + /* This last one is specific to EP0 */ +#define DWC3_EP0_DIR_IN BIT(31) + + /* + * IMPORTANT: we *know* we have 256 TRBs in our @trb_pool, so we will + * use a u8 type here. If anybody decides to increase number of TRBs to + * anything larger than 256 - I can't see why people would want to do + * this though - then this type needs to be changed. + * + * By using u8 types we ensure that our % operator when incrementing + * enqueue and dequeue get optimized away by the compiler. + */ + u8 trb_enqueue; + u8 trb_dequeue; + + u8 number; + u8 type; + u8 resource_index; + u32 frame_number; + u32 interval; + + char name[20]; + + unsigned direction:1; + unsigned stream_capable:1; + + /* For isochronous START TRANSFER workaround only */ + u8 combo_num; + int start_cmd_status; +}; + +enum dwc3_phy { + DWC3_PHY_UNKNOWN = 0, + DWC3_PHY_USB3, + DWC3_PHY_USB2, +}; + +enum dwc3_ep0_next { + DWC3_EP0_UNKNOWN = 0, + DWC3_EP0_COMPLETE, + DWC3_EP0_NRDY_DATA, + DWC3_EP0_NRDY_STATUS, +}; + +enum dwc3_ep0_state { + EP0_UNCONNECTED = 0, + EP0_SETUP_PHASE, + EP0_DATA_PHASE, + EP0_STATUS_PHASE, +}; + +enum dwc3_link_state { + /* In SuperSpeed */ + DWC3_LINK_STATE_U0 = 0x00, /* in HS, means ON */ + DWC3_LINK_STATE_U1 = 0x01, + DWC3_LINK_STATE_U2 = 0x02, /* in HS, means SLEEP */ + DWC3_LINK_STATE_U3 = 0x03, /* in HS, means SUSPEND */ + DWC3_LINK_STATE_SS_DIS = 0x04, + DWC3_LINK_STATE_RX_DET = 0x05, /* in HS, means Early Suspend */ + DWC3_LINK_STATE_SS_INACT = 0x06, + DWC3_LINK_STATE_POLL = 0x07, + DWC3_LINK_STATE_RECOV = 0x08, + DWC3_LINK_STATE_HRESET = 0x09, + DWC3_LINK_STATE_CMPLY = 0x0a, + DWC3_LINK_STATE_LPBK = 0x0b, + DWC3_LINK_STATE_RESET = 0x0e, + DWC3_LINK_STATE_RESUME = 0x0f, + DWC3_LINK_STATE_MASK = 0x0f, +}; + +/* TRB Length, PCM and Status */ +#define DWC3_TRB_SIZE_MASK (0x00ffffff) +#define DWC3_TRB_SIZE_LENGTH(n) ((n) & DWC3_TRB_SIZE_MASK) +#define DWC3_TRB_SIZE_PCM1(n) (((n) & 0x03) << 24) +#define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28)) >> 28) + +#define DWC3_TRBSTS_OK 0 +#define DWC3_TRBSTS_MISSED_ISOC 1 +#define DWC3_TRBSTS_SETUP_PENDING 2 +#define DWC3_TRB_STS_XFER_IN_PROG 4 + +/* TRB Control */ +#define DWC3_TRB_CTRL_HWO BIT(0) +#define DWC3_TRB_CTRL_LST BIT(1) +#define DWC3_TRB_CTRL_CHN BIT(2) +#define DWC3_TRB_CTRL_CSP BIT(3) +#define DWC3_TRB_CTRL_TRBCTL(n) (((n) & 0x3f) << 4) +#define DWC3_TRB_CTRL_ISP_IMI BIT(10) +#define DWC3_TRB_CTRL_IOC BIT(11) +#define DWC3_TRB_CTRL_SID_SOFN(n) (((n) & 0xffff) << 14) +#define DWC3_TRB_CTRL_GET_SID_SOFN(n) (((n) & (0xffff << 14)) >> 14) + +#define DWC3_TRBCTL_TYPE(n) ((n) & (0x3f << 4)) +#define DWC3_TRBCTL_NORMAL DWC3_TRB_CTRL_TRBCTL(1) +#define DWC3_TRBCTL_CONTROL_SETUP DWC3_TRB_CTRL_TRBCTL(2) +#define DWC3_TRBCTL_CONTROL_STATUS2 DWC3_TRB_CTRL_TRBCTL(3) +#define DWC3_TRBCTL_CONTROL_STATUS3 DWC3_TRB_CTRL_TRBCTL(4) +#define DWC3_TRBCTL_CONTROL_DATA DWC3_TRB_CTRL_TRBCTL(5) +#define DWC3_TRBCTL_ISOCHRONOUS_FIRST DWC3_TRB_CTRL_TRBCTL(6) +#define DWC3_TRBCTL_ISOCHRONOUS DWC3_TRB_CTRL_TRBCTL(7) +#define DWC3_TRBCTL_LINK_TRB DWC3_TRB_CTRL_TRBCTL(8) + +/** + * struct dwc3_trb - transfer request block (hw format) + * @bpl: DW0-3 + * @bph: DW4-7 + * @size: DW8-B + * @ctrl: DWC-F + */ +struct dwc3_trb { + u32 bpl; + u32 bph; + u32 size; + u32 ctrl; +} __packed; + +/** + * struct dwc3_hwparams - copy of HWPARAMS registers + * @hwparams0: GHWPARAMS0 + * @hwparams1: GHWPARAMS1 + * @hwparams2: GHWPARAMS2 + * @hwparams3: GHWPARAMS3 + * @hwparams4: GHWPARAMS4 + * @hwparams5: GHWPARAMS5 + * @hwparams6: GHWPARAMS6 + * @hwparams7: GHWPARAMS7 + * @hwparams8: GHWPARAMS8 + */ +struct dwc3_hwparams { + u32 hwparams0; + u32 hwparams1; + u32 hwparams2; + u32 hwparams3; + u32 hwparams4; + u32 hwparams5; + u32 hwparams6; + u32 hwparams7; + u32 hwparams8; +}; + +/* HWPARAMS0 */ +#define DWC3_MODE(n) ((n) & 0x7) + +#define DWC3_MDWIDTH(n) (((n) & 0xff00) >> 8) + +/* HWPARAMS1 */ +#define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15) + +/* HWPARAMS3 */ +#define DWC3_NUM_IN_EPS_MASK (0x1f << 18) +#define DWC3_NUM_EPS_MASK (0x3f << 12) +#define DWC3_NUM_EPS(p) (((p)->hwparams3 & \ + (DWC3_NUM_EPS_MASK)) >> 12) +#define DWC3_NUM_IN_EPS(p) (((p)->hwparams3 & \ + (DWC3_NUM_IN_EPS_MASK)) >> 18) + +/* HWPARAMS7 */ +#define DWC3_RAM1_DEPTH(n) ((n) & 0xffff) + +/** + * struct dwc3_request - representation of a transfer request + * @request: struct usb_request to be transferred + * @list: a list_head used for request queueing + * @dep: struct dwc3_ep owning this request + * @sg: pointer to first incomplete sg + * @start_sg: pointer to the sg which should be queued next + * @num_pending_sgs: counter to pending sgs + * @num_queued_sgs: counter to the number of sgs which already got queued + * @remaining: amount of data remaining + * @status: internal dwc3 request status tracking + * @epnum: endpoint number to which this request refers + * @trb: pointer to struct dwc3_trb + * @trb_dma: DMA address of @trb + * @num_trbs: number of TRBs used by this request + * @needs_extra_trb: true when request needs one extra TRB (either due to ZLP + * or unaligned OUT) + * @direction: IN or OUT direction flag + * @mapped: true when request has been dma-mapped + */ +struct dwc3_request { + struct usb_request request; + struct list_head list; + struct dwc3_ep *dep; + struct scatterlist *sg; + struct scatterlist *start_sg; + + unsigned int num_pending_sgs; + unsigned int num_queued_sgs; + unsigned int remaining; + + unsigned int status; +#define DWC3_REQUEST_STATUS_QUEUED 0 +#define DWC3_REQUEST_STATUS_STARTED 1 +#define DWC3_REQUEST_STATUS_CANCELLED 2 +#define DWC3_REQUEST_STATUS_COMPLETED 3 +#define DWC3_REQUEST_STATUS_UNKNOWN -1 + + u8 epnum; + struct dwc3_trb *trb; + dma_addr_t trb_dma; + + unsigned int num_trbs; + + unsigned int needs_extra_trb:1; + unsigned int direction:1; + unsigned int mapped:1; +}; + +/* + * struct dwc3_scratchpad_array - hibernation scratchpad array + * (format defined by hw) + */ +struct dwc3_scratchpad_array { + __le64 dma_adr[DWC3_MAX_HIBER_SCRATCHBUFS]; +}; + +/** + * struct dwc3 - representation of our controller + * @drd_work: workqueue used for role swapping + * @ep0_trb: trb which is used for the ctrl_req + * @bounce: address of bounce buffer + * @scratchbuf: address of scratch buffer + * @setup_buf: used while precessing STD USB requests + * @ep0_trb_addr: dma address of @ep0_trb + * @bounce_addr: dma address of @bounce + * @ep0_usb_req: dummy req used while handling STD USB requests + * @scratch_addr: dma address of scratchbuf + * @ep0_in_setup: one control transfer is completed and enter setup phase + * @lock: for synchronizing + * @mutex: for mode switching + * @dev: pointer to our struct device + * @sysdev: pointer to the DMA-capable device + * @xhci: pointer to our xHCI child + * @xhci_resources: struct resources for our @xhci child + * @ev_buf: struct dwc3_event_buffer pointer + * @eps: endpoint array + * @gadget: device side representation of the peripheral controller + * @gadget_driver: pointer to the gadget driver + * @clks: array of clocks + * @num_clks: number of clocks + * @reset: reset control + * @regs: base address for our registers + * @regs_size: address space size + * @fladj: frame length adjustment + * @irq_gadget: peripheral controller's IRQ number + * @otg_irq: IRQ number for OTG IRQs + * @current_otg_role: current role of operation while using the OTG block + * @desired_otg_role: desired role of operation while using the OTG block + * @otg_restart_host: flag that OTG controller needs to restart host + * @nr_scratch: number of scratch buffers + * @u1u2: only used on revisions <1.83a for workaround + * @maximum_speed: maximum speed requested (mainly for testing purposes) + * @ip: controller's ID + * @revision: controller's version of an IP + * @version_type: VERSIONTYPE register contents, a sub release of a revision + * @dr_mode: requested mode of operation + * @current_dr_role: current role of operation when in dual-role mode + * @desired_dr_role: desired role of operation when in dual-role mode + * @edev: extcon handle + * @edev_nb: extcon notifier + * @hsphy_mode: UTMI phy mode, one of following: + * - USBPHY_INTERFACE_MODE_UTMI + * - USBPHY_INTERFACE_MODE_UTMIW + * @role_sw: usb_role_switch handle + * @role_switch_default_mode: default operation mode of controller while + * usb role is USB_ROLE_NONE. + * @usb2_phy: pointer to USB2 PHY + * @usb3_phy: pointer to USB3 PHY + * @usb2_generic_phy: pointer to USB2 PHY + * @usb3_generic_phy: pointer to USB3 PHY + * @phys_ready: flag to indicate that PHYs are ready + * @ulpi: pointer to ulpi interface + * @ulpi_ready: flag to indicate that ULPI is initialized + * @u2sel: parameter from Set SEL request. + * @u2pel: parameter from Set SEL request. + * @u1sel: parameter from Set SEL request. + * @u1pel: parameter from Set SEL request. + * @num_eps: number of endpoints + * @ep0_next_event: hold the next expected event + * @ep0state: state of endpoint zero + * @link_state: link state + * @speed: device speed (super, high, full, low) + * @hwparams: copy of hwparams registers + * @root: debugfs root folder pointer + * @regset: debugfs pointer to regdump file + * @dbg_lsp_select: current debug lsp mux register selection + * @test_mode: true when we're entering a USB test mode + * @test_mode_nr: test feature selector + * @lpm_nyet_threshold: LPM NYET response threshold + * @hird_threshold: HIRD threshold + * @rx_thr_num_pkt_prd: periodic ESS receive packet count + * @rx_max_burst_prd: max periodic ESS receive burst size + * @tx_thr_num_pkt_prd: periodic ESS transmit packet count + * @tx_max_burst_prd: max periodic ESS transmit burst size + * @hsphy_interface: "utmi" or "ulpi" + * @connected: true when we're connected to a host, false otherwise + * @softconnect: true when gadget connect is called, false when disconnect runs + * @delayed_status: true when gadget driver asks for delayed status + * @ep0_bounced: true when we used bounce buffer + * @ep0_expect_in: true when we expect a DATA IN transfer + * @has_hibernation: true when dwc3 was configured with Hibernation + * @sysdev_is_parent: true when dwc3 device has a parent driver + * @has_lpm_erratum: true when core was configured with LPM Erratum. Note that + * there's now way for software to detect this in runtime. + * @is_utmi_l1_suspend: the core asserts output signal + * 0 - utmi_sleep_n + * 1 - utmi_l1_suspend_n + * @is_fpga: true when we are using the FPGA board + * @pending_events: true when we have pending IRQs to be handled + * @pullups_connected: true when Run/Stop bit is set + * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround + * @three_stage_setup: set if we perform a three phase setup + * @dis_start_transfer_quirk: set if start_transfer failure SW workaround is + * not needed for DWC_usb31 version 1.70a-ea06 and below + * @usb3_lpm_capable: set if hadrware supports Link Power Management + * @usb2_lpm_disable: set to disable usb2 lpm for host + * @usb2_gadget_lpm_disable: set to disable usb2 lpm for gadget + * @disable_scramble_quirk: set if we enable the disable scramble quirk + * @u2exit_lfps_quirk: set if we enable u2exit lfps quirk + * @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk + * @req_p1p2p3_quirk: set if we enable request p1p2p3 quirk + * @del_p1p2p3_quirk: set if we enable delay p1p2p3 quirk + * @del_phy_power_chg_quirk: set if we enable delay phy power change quirk + * @lfps_filter_quirk: set if we enable LFPS filter quirk + * @rx_detect_poll_quirk: set if we enable rx_detect to polling lfps quirk + * @dis_u3_susphy_quirk: set if we disable usb3 suspend phy + * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy + * @dis_enblslpm_quirk: set if we clear enblslpm in GUSB2PHYCFG, + * disabling the suspend signal to the PHY. + * @dis_u1_entry_quirk: set if link entering into U1 state needs to be disabled. + * @dis_u2_entry_quirk: set if link entering into U2 state needs to be disabled. + * @dis_rxdet_inp3_quirk: set if we disable Rx.Detect in P3 + * @dis_u2_freeclk_exists_quirk : set if we clear u2_freeclk_exists + * in GUSB2PHYCFG, specify that USB2 PHY doesn't + * provide a free-running PHY clock. + * @dis_del_phy_power_chg_quirk: set if we disable delay phy power + * change quirk. + * @dis_tx_ipgap_linecheck_quirk: set if we disable u2mac linestate + * check during HS transmit. + * @parkmode_disable_ss_quirk: set if we need to disable all SuperSpeed + * instances in park mode. + * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk + * @tx_de_emphasis: Tx de-emphasis value + * 0 - -6dB de-emphasis + * 1 - -3.5dB de-emphasis + * 2 - No de-emphasis + * 3 - Reserved + * @dis_metastability_quirk: set to disable metastability quirk. + * @dis_split_quirk: set to disable split boundary. + * @imod_interval: set the interrupt moderation interval in 250ns + * increments or 0 to disable. + */ +struct dwc3 { + struct work_struct drd_work; + struct dwc3_trb *ep0_trb; + void *bounce; + void *scratchbuf; + u8 *setup_buf; + dma_addr_t ep0_trb_addr; + dma_addr_t bounce_addr; + dma_addr_t scratch_addr; + struct dwc3_request ep0_usb_req; + struct completion ep0_in_setup; + + /* device lock */ + spinlock_t lock; + + /* mode switching lock */ + struct mutex mutex; + + struct device *dev; + struct device *sysdev; + + struct platform_device *xhci; + struct resource xhci_resources[DWC3_XHCI_RESOURCES_NUM]; + + struct dwc3_event_buffer *ev_buf; + struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM]; + + struct usb_gadget *gadget; + struct usb_gadget_driver *gadget_driver; + + struct clk_bulk_data *clks; + int num_clks; + + struct reset_control *reset; + + struct usb_phy *usb2_phy; + struct usb_phy *usb3_phy; + + struct phy *usb2_generic_phy; + struct phy *usb3_generic_phy; + + bool phys_ready; + + struct ulpi *ulpi; + bool ulpi_ready; + + void __iomem *regs; + size_t regs_size; + + enum usb_dr_mode dr_mode; + u32 current_dr_role; + u32 desired_dr_role; + struct extcon_dev *edev; + struct notifier_block edev_nb; + enum usb_phy_interface hsphy_mode; + struct usb_role_switch *role_sw; + enum usb_dr_mode role_switch_default_mode; + + u32 fladj; + u32 irq_gadget; + u32 otg_irq; + u32 current_otg_role; + u32 desired_otg_role; + bool otg_restart_host; + u32 nr_scratch; + u32 u1u2; + u32 maximum_speed; + + u32 ip; + +#define DWC3_IP 0x5533 +#define DWC31_IP 0x3331 +#define DWC32_IP 0x3332 + + u32 revision; + +#define DWC3_REVISION_ANY 0x0 +#define DWC3_REVISION_173A 0x5533173a +#define DWC3_REVISION_175A 0x5533175a +#define DWC3_REVISION_180A 0x5533180a +#define DWC3_REVISION_183A 0x5533183a +#define DWC3_REVISION_185A 0x5533185a +#define DWC3_REVISION_187A 0x5533187a +#define DWC3_REVISION_188A 0x5533188a +#define DWC3_REVISION_190A 0x5533190a +#define DWC3_REVISION_194A 0x5533194a +#define DWC3_REVISION_200A 0x5533200a +#define DWC3_REVISION_202A 0x5533202a +#define DWC3_REVISION_210A 0x5533210a +#define DWC3_REVISION_220A 0x5533220a +#define DWC3_REVISION_230A 0x5533230a +#define DWC3_REVISION_240A 0x5533240a +#define DWC3_REVISION_250A 0x5533250a +#define DWC3_REVISION_260A 0x5533260a +#define DWC3_REVISION_270A 0x5533270a +#define DWC3_REVISION_280A 0x5533280a +#define DWC3_REVISION_290A 0x5533290a +#define DWC3_REVISION_300A 0x5533300a +#define DWC3_REVISION_310A 0x5533310a +#define DWC3_REVISION_330A 0x5533330a + +#define DWC31_REVISION_ANY 0x0 +#define DWC31_REVISION_110A 0x3131302a +#define DWC31_REVISION_120A 0x3132302a +#define DWC31_REVISION_160A 0x3136302a +#define DWC31_REVISION_170A 0x3137302a +#define DWC31_REVISION_180A 0x3138302a +#define DWC31_REVISION_190A 0x3139302a + +#define DWC32_REVISION_ANY 0x0 +#define DWC32_REVISION_100A 0x3130302a + + u32 version_type; + +#define DWC31_VERSIONTYPE_ANY 0x0 +#define DWC31_VERSIONTYPE_EA01 0x65613031 +#define DWC31_VERSIONTYPE_EA02 0x65613032 +#define DWC31_VERSIONTYPE_EA03 0x65613033 +#define DWC31_VERSIONTYPE_EA04 0x65613034 +#define DWC31_VERSIONTYPE_EA05 0x65613035 +#define DWC31_VERSIONTYPE_EA06 0x65613036 + + enum dwc3_ep0_next ep0_next_event; + enum dwc3_ep0_state ep0state; + enum dwc3_link_state link_state; + + u16 u2sel; + u16 u2pel; + u8 u1sel; + u8 u1pel; + + u8 speed; + + u8 num_eps; + + struct dwc3_hwparams hwparams; + struct dentry *root; + struct debugfs_regset32 *regset; + + u32 dbg_lsp_select; + + u8 test_mode; + u8 test_mode_nr; + u8 lpm_nyet_threshold; + u8 hird_threshold; + u8 rx_thr_num_pkt_prd; + u8 rx_max_burst_prd; + u8 tx_thr_num_pkt_prd; + u8 tx_max_burst_prd; + + const char *hsphy_interface; + + unsigned connected:1; + unsigned softconnect:1; + unsigned delayed_status:1; + unsigned ep0_bounced:1; + unsigned ep0_expect_in:1; + unsigned has_hibernation:1; + unsigned sysdev_is_parent:1; + unsigned has_lpm_erratum:1; + unsigned is_utmi_l1_suspend:1; + unsigned is_fpga:1; + unsigned pending_events:1; + unsigned pullups_connected:1; + unsigned setup_packet_pending:1; + unsigned three_stage_setup:1; + unsigned dis_start_transfer_quirk:1; + unsigned usb3_lpm_capable:1; + unsigned usb2_lpm_disable:1; + unsigned usb2_gadget_lpm_disable:1; + + unsigned disable_scramble_quirk:1; + unsigned u2exit_lfps_quirk:1; + unsigned u2ss_inp3_quirk:1; + unsigned req_p1p2p3_quirk:1; + unsigned del_p1p2p3_quirk:1; + unsigned del_phy_power_chg_quirk:1; + unsigned lfps_filter_quirk:1; + unsigned rx_detect_poll_quirk:1; + unsigned dis_u3_susphy_quirk:1; + unsigned dis_u2_susphy_quirk:1; + unsigned dis_enblslpm_quirk:1; + unsigned dis_u1_entry_quirk:1; + unsigned dis_u2_entry_quirk:1; + unsigned dis_rxdet_inp3_quirk:1; + unsigned dis_u2_freeclk_exists_quirk:1; + unsigned dis_del_phy_power_chg_quirk:1; + unsigned dis_tx_ipgap_linecheck_quirk:1; + unsigned parkmode_disable_ss_quirk:1; + + unsigned tx_de_emphasis_quirk:1; + unsigned tx_de_emphasis:2; + + unsigned dis_metastability_quirk:1; + + unsigned dis_split_quirk:1; + + u16 imod_interval; +}; + +#define INCRX_BURST_MODE 0 +#define INCRX_UNDEF_LENGTH_BURST_MODE 1 + +#define work_to_dwc(w) (container_of((w), struct dwc3, drd_work)) + +/* -------------------------------------------------------------------------- */ + +struct dwc3_event_type { + u32 is_devspec:1; + u32 type:7; + u32 reserved8_31:24; +} __packed; + +#define DWC3_DEPEVT_XFERCOMPLETE 0x01 +#define DWC3_DEPEVT_XFERINPROGRESS 0x02 +#define DWC3_DEPEVT_XFERNOTREADY 0x03 +#define DWC3_DEPEVT_RXTXFIFOEVT 0x04 +#define DWC3_DEPEVT_STREAMEVT 0x06 +#define DWC3_DEPEVT_EPCMDCMPLT 0x07 + +/** + * struct dwc3_event_depevt - Device Endpoint Events + * @one_bit: indicates this is an endpoint event (not used) + * @endpoint_number: number of the endpoint + * @endpoint_event: The event we have: + * 0x00 - Reserved + * 0x01 - XferComplete + * 0x02 - XferInProgress + * 0x03 - XferNotReady + * 0x04 - RxTxFifoEvt (IN->Underrun, OUT->Overrun) + * 0x05 - Reserved + * 0x06 - StreamEvt + * 0x07 - EPCmdCmplt + * @reserved11_10: Reserved, don't use. + * @status: Indicates the status of the event. Refer to databook for + * more information. + * @parameters: Parameters of the current event. Refer to databook for + * more information. + */ +struct dwc3_event_depevt { + u32 one_bit:1; + u32 endpoint_number:5; + u32 endpoint_event:4; + u32 reserved11_10:2; + u32 status:4; + +/* Within XferNotReady */ +#define DEPEVT_STATUS_TRANSFER_ACTIVE BIT(3) + +/* Within XferComplete or XferInProgress */ +#define DEPEVT_STATUS_BUSERR BIT(0) +#define DEPEVT_STATUS_SHORT BIT(1) +#define DEPEVT_STATUS_IOC BIT(2) +#define DEPEVT_STATUS_LST BIT(3) /* XferComplete */ +#define DEPEVT_STATUS_MISSED_ISOC BIT(3) /* XferInProgress */ + +/* Stream event only */ +#define DEPEVT_STREAMEVT_FOUND 1 +#define DEPEVT_STREAMEVT_NOTFOUND 2 + +/* Stream event parameter */ +#define DEPEVT_STREAM_PRIME 0xfffe +#define DEPEVT_STREAM_NOSTREAM 0x0 + +/* Control-only Status */ +#define DEPEVT_STATUS_CONTROL_DATA 1 +#define DEPEVT_STATUS_CONTROL_STATUS 2 +#define DEPEVT_STATUS_CONTROL_PHASE(n) ((n) & 3) + +/* In response to Start Transfer */ +#define DEPEVT_TRANSFER_NO_RESOURCE 1 +#define DEPEVT_TRANSFER_BUS_EXPIRY 2 + + u32 parameters:16; + +/* For Command Complete Events */ +#define DEPEVT_PARAMETER_CMD(n) (((n) & (0xf << 8)) >> 8) +} __packed; + +/** + * struct dwc3_event_devt - Device Events + * @one_bit: indicates this is a non-endpoint event (not used) + * @device_event: indicates it's a device event. Should read as 0x00 + * @type: indicates the type of device event. + * 0 - DisconnEvt + * 1 - USBRst + * 2 - ConnectDone + * 3 - ULStChng + * 4 - WkUpEvt + * 5 - Reserved + * 6 - EOPF + * 7 - SOF + * 8 - Reserved + * 9 - ErrticErr + * 10 - CmdCmplt + * 11 - EvntOverflow + * 12 - VndrDevTstRcved + * @reserved15_12: Reserved, not used + * @event_info: Information about this event + * @reserved31_25: Reserved, not used + */ +struct dwc3_event_devt { + u32 one_bit:1; + u32 device_event:7; + u32 type:4; + u32 reserved15_12:4; + u32 event_info:9; + u32 reserved31_25:7; +} __packed; + +/** + * struct dwc3_event_gevt - Other Core Events + * @one_bit: indicates this is a non-endpoint event (not used) + * @device_event: indicates it's (0x03) Carkit or (0x04) I2C event. + * @phy_port_number: self-explanatory + * @reserved31_12: Reserved, not used. + */ +struct dwc3_event_gevt { + u32 one_bit:1; + u32 device_event:7; + u32 phy_port_number:4; + u32 reserved31_12:20; +} __packed; + +/** + * union dwc3_event - representation of Event Buffer contents + * @raw: raw 32-bit event + * @type: the type of the event + * @depevt: Device Endpoint Event + * @devt: Device Event + * @gevt: Global Event + */ +union dwc3_event { + u32 raw; + struct dwc3_event_type type; + struct dwc3_event_depevt depevt; + struct dwc3_event_devt devt; + struct dwc3_event_gevt gevt; +}; + +/** + * struct dwc3_gadget_ep_cmd_params - representation of endpoint command + * parameters + * @param2: third parameter + * @param1: second parameter + * @param0: first parameter + */ +struct dwc3_gadget_ep_cmd_params { + u32 param2; + u32 param1; + u32 param0; +}; + +/* + * DWC3 Features to be used as Driver Data + */ + +#define DWC3_HAS_PERIPHERAL BIT(0) +#define DWC3_HAS_XHCI BIT(1) +#define DWC3_HAS_OTG BIT(3) + +/* prototypes */ +void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode); +void dwc3_set_mode(struct dwc3 *dwc, u32 mode); +u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type); + +#define DWC3_IP_IS(_ip) \ + (dwc->ip == _ip##_IP) + +#define DWC3_VER_IS(_ip, _ver) \ + (DWC3_IP_IS(_ip) && dwc->revision == _ip##_REVISION_##_ver) + +#define DWC3_VER_IS_PRIOR(_ip, _ver) \ + (DWC3_IP_IS(_ip) && dwc->revision < _ip##_REVISION_##_ver) + +#define DWC3_VER_IS_WITHIN(_ip, _from, _to) \ + (DWC3_IP_IS(_ip) && \ + dwc->revision >= _ip##_REVISION_##_from && \ + (!(_ip##_REVISION_##_to) || \ + dwc->revision <= _ip##_REVISION_##_to)) + +#define DWC3_VER_TYPE_IS_WITHIN(_ip, _ver, _from, _to) \ + (DWC3_VER_IS(_ip, _ver) && \ + dwc->version_type >= _ip##_VERSIONTYPE_##_from && \ + (!(_ip##_VERSIONTYPE_##_to) || \ + dwc->version_type <= _ip##_VERSIONTYPE_##_to)) + +bool dwc3_has_imod(struct dwc3 *dwc); + +int dwc3_event_buffers_setup(struct dwc3 *dwc); +void dwc3_event_buffers_cleanup(struct dwc3 *dwc); + +int dwc3_core_soft_reset(struct dwc3 *dwc); + +#if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) +int dwc3_host_init(struct dwc3 *dwc); +void dwc3_host_exit(struct dwc3 *dwc); +#else +static inline int dwc3_host_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_host_exit(struct dwc3 *dwc) +{ } +#endif + +#if IS_ENABLED(CONFIG_USB_DWC3_GADGET) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) +int dwc3_gadget_init(struct dwc3 *dwc); +void dwc3_gadget_exit(struct dwc3 *dwc); +int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode); +int dwc3_gadget_get_link_state(struct dwc3 *dwc); +int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state); +int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, + struct dwc3_gadget_ep_cmd_params *params); +int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned int cmd, + u32 param); +#else +static inline int dwc3_gadget_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_gadget_exit(struct dwc3 *dwc) +{ } +static inline int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode) +{ return 0; } +static inline int dwc3_gadget_get_link_state(struct dwc3 *dwc) +{ return 0; } +static inline int dwc3_gadget_set_link_state(struct dwc3 *dwc, + enum dwc3_link_state state) +{ return 0; } + +static inline int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, + struct dwc3_gadget_ep_cmd_params *params) +{ return 0; } +static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc, + int cmd, u32 param) +{ return 0; } +#endif + +#if IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) +int dwc3_drd_init(struct dwc3 *dwc); +void dwc3_drd_exit(struct dwc3 *dwc); +void dwc3_otg_init(struct dwc3 *dwc); +void dwc3_otg_exit(struct dwc3 *dwc); +void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus); +void dwc3_otg_host_init(struct dwc3 *dwc); +#else +static inline int dwc3_drd_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_drd_exit(struct dwc3 *dwc) +{ } +static inline void dwc3_otg_init(struct dwc3 *dwc) +{ } +static inline void dwc3_otg_exit(struct dwc3 *dwc) +{ } +static inline void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus) +{ } +static inline void dwc3_otg_host_init(struct dwc3 *dwc) +{ } +#endif + +/* power management interface */ +#if !IS_ENABLED(CONFIG_USB_DWC3_HOST) +int dwc3_gadget_suspend(struct dwc3 *dwc); +int dwc3_gadget_resume(struct dwc3 *dwc); +void dwc3_gadget_process_pending_events(struct dwc3 *dwc); +#else +static inline int dwc3_gadget_suspend(struct dwc3 *dwc) +{ + return 0; +} + +static inline int dwc3_gadget_resume(struct dwc3 *dwc) +{ + return 0; +} + +static inline void dwc3_gadget_process_pending_events(struct dwc3 *dwc) +{ +} +#endif /* !IS_ENABLED(CONFIG_USB_DWC3_HOST) */ + +#if IS_ENABLED(CONFIG_USB_DWC3_ULPI) +int dwc3_ulpi_init(struct dwc3 *dwc); +void dwc3_ulpi_exit(struct dwc3 *dwc); +#else +static inline int dwc3_ulpi_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_ulpi_exit(struct dwc3 *dwc) +{ } +#endif + +#endif /* __DRIVERS_USB_DWC3_CORE_H */ |