379 lines
12 KiB
C
379 lines
12 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. */
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#include <linux/usb/otg-fsm.h>
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#include <linux/usb/otg.h>
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#include <linux/ioctl.h>
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/* USB Command Register Bit Masks */
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#define USB_CMD_RUN_STOP (0x1<<0)
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#define USB_CMD_CTRL_RESET (0x1<<1)
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#define USB_CMD_PERIODIC_SCHEDULE_EN (0x1<<4)
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#define USB_CMD_ASYNC_SCHEDULE_EN (0x1<<5)
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#define USB_CMD_INT_AA_DOORBELL (0x1<<6)
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#define USB_CMD_ASP (0x3<<8)
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#define USB_CMD_ASYNC_SCH_PARK_EN (0x1<<11)
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#define USB_CMD_SUTW (0x1<<13)
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#define USB_CMD_ATDTW (0x1<<14)
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#define USB_CMD_ITC (0xFF<<16)
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/* bit 15,3,2 are frame list size */
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#define USB_CMD_FRAME_SIZE_1024 (0x0<<15 | 0x0<<2)
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#define USB_CMD_FRAME_SIZE_512 (0x0<<15 | 0x1<<2)
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#define USB_CMD_FRAME_SIZE_256 (0x0<<15 | 0x2<<2)
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#define USB_CMD_FRAME_SIZE_128 (0x0<<15 | 0x3<<2)
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#define USB_CMD_FRAME_SIZE_64 (0x1<<15 | 0x0<<2)
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#define USB_CMD_FRAME_SIZE_32 (0x1<<15 | 0x1<<2)
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#define USB_CMD_FRAME_SIZE_16 (0x1<<15 | 0x2<<2)
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#define USB_CMD_FRAME_SIZE_8 (0x1<<15 | 0x3<<2)
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/* bit 9-8 are async schedule park mode count */
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#define USB_CMD_ASP_00 (0x0<<8)
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#define USB_CMD_ASP_01 (0x1<<8)
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#define USB_CMD_ASP_10 (0x2<<8)
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#define USB_CMD_ASP_11 (0x3<<8)
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#define USB_CMD_ASP_BIT_POS (8)
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/* bit 23-16 are interrupt threshold control */
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#define USB_CMD_ITC_NO_THRESHOLD (0x00<<16)
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#define USB_CMD_ITC_1_MICRO_FRM (0x01<<16)
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#define USB_CMD_ITC_2_MICRO_FRM (0x02<<16)
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#define USB_CMD_ITC_4_MICRO_FRM (0x04<<16)
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#define USB_CMD_ITC_8_MICRO_FRM (0x08<<16)
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#define USB_CMD_ITC_16_MICRO_FRM (0x10<<16)
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#define USB_CMD_ITC_32_MICRO_FRM (0x20<<16)
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#define USB_CMD_ITC_64_MICRO_FRM (0x40<<16)
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#define USB_CMD_ITC_BIT_POS (16)
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/* USB Status Register Bit Masks */
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#define USB_STS_INT (0x1<<0)
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#define USB_STS_ERR (0x1<<1)
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#define USB_STS_PORT_CHANGE (0x1<<2)
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#define USB_STS_FRM_LST_ROLL (0x1<<3)
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#define USB_STS_SYS_ERR (0x1<<4)
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#define USB_STS_IAA (0x1<<5)
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#define USB_STS_RESET_RECEIVED (0x1<<6)
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#define USB_STS_SOF (0x1<<7)
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#define USB_STS_DCSUSPEND (0x1<<8)
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#define USB_STS_HC_HALTED (0x1<<12)
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#define USB_STS_RCL (0x1<<13)
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#define USB_STS_PERIODIC_SCHEDULE (0x1<<14)
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#define USB_STS_ASYNC_SCHEDULE (0x1<<15)
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/* USB Interrupt Enable Register Bit Masks */
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#define USB_INTR_INT_EN (0x1<<0)
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#define USB_INTR_ERR_INT_EN (0x1<<1)
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#define USB_INTR_PC_DETECT_EN (0x1<<2)
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#define USB_INTR_FRM_LST_ROLL_EN (0x1<<3)
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#define USB_INTR_SYS_ERR_EN (0x1<<4)
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#define USB_INTR_ASYN_ADV_EN (0x1<<5)
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#define USB_INTR_RESET_EN (0x1<<6)
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#define USB_INTR_SOF_EN (0x1<<7)
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#define USB_INTR_DEVICE_SUSPEND (0x1<<8)
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/* Device Address bit masks */
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#define USB_DEVICE_ADDRESS_MASK (0x7F<<25)
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#define USB_DEVICE_ADDRESS_BIT_POS (25)
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/* PORTSC Register Bit Masks,Only one PORT in OTG mode*/
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#define PORTSC_CURRENT_CONNECT_STATUS (0x1<<0)
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#define PORTSC_CONNECT_STATUS_CHANGE (0x1<<1)
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#define PORTSC_PORT_ENABLE (0x1<<2)
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#define PORTSC_PORT_EN_DIS_CHANGE (0x1<<3)
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#define PORTSC_OVER_CURRENT_ACT (0x1<<4)
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#define PORTSC_OVER_CUURENT_CHG (0x1<<5)
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#define PORTSC_PORT_FORCE_RESUME (0x1<<6)
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#define PORTSC_PORT_SUSPEND (0x1<<7)
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#define PORTSC_PORT_RESET (0x1<<8)
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#define PORTSC_LINE_STATUS_BITS (0x3<<10)
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#define PORTSC_PORT_POWER (0x1<<12)
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#define PORTSC_PORT_INDICTOR_CTRL (0x3<<14)
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#define PORTSC_PORT_TEST_CTRL (0xF<<16)
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#define PORTSC_WAKE_ON_CONNECT_EN (0x1<<20)
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#define PORTSC_WAKE_ON_CONNECT_DIS (0x1<<21)
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#define PORTSC_WAKE_ON_OVER_CURRENT (0x1<<22)
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#define PORTSC_PHY_LOW_POWER_SPD (0x1<<23)
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#define PORTSC_PORT_FORCE_FULL_SPEED (0x1<<24)
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#define PORTSC_PORT_SPEED_MASK (0x3<<26)
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#define PORTSC_TRANSCEIVER_WIDTH (0x1<<28)
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#define PORTSC_PHY_TYPE_SEL (0x3<<30)
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/* bit 11-10 are line status */
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#define PORTSC_LINE_STATUS_SE0 (0x0<<10)
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#define PORTSC_LINE_STATUS_JSTATE (0x1<<10)
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#define PORTSC_LINE_STATUS_KSTATE (0x2<<10)
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#define PORTSC_LINE_STATUS_UNDEF (0x3<<10)
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#define PORTSC_LINE_STATUS_BIT_POS (10)
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/* bit 15-14 are port indicator control */
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#define PORTSC_PIC_OFF (0x0<<14)
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#define PORTSC_PIC_AMBER (0x1<<14)
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#define PORTSC_PIC_GREEN (0x2<<14)
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#define PORTSC_PIC_UNDEF (0x3<<14)
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#define PORTSC_PIC_BIT_POS (14)
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/* bit 19-16 are port test control */
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#define PORTSC_PTC_DISABLE (0x0<<16)
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#define PORTSC_PTC_JSTATE (0x1<<16)
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#define PORTSC_PTC_KSTATE (0x2<<16)
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#define PORTSC_PTC_SEQNAK (0x3<<16)
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#define PORTSC_PTC_PACKET (0x4<<16)
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#define PORTSC_PTC_FORCE_EN (0x5<<16)
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#define PORTSC_PTC_BIT_POS (16)
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/* bit 27-26 are port speed */
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#define PORTSC_PORT_SPEED_FULL (0x0<<26)
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#define PORTSC_PORT_SPEED_LOW (0x1<<26)
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#define PORTSC_PORT_SPEED_HIGH (0x2<<26)
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#define PORTSC_PORT_SPEED_UNDEF (0x3<<26)
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#define PORTSC_SPEED_BIT_POS (26)
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/* bit 28 is parallel transceiver width for UTMI interface */
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#define PORTSC_PTW (0x1<<28)
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#define PORTSC_PTW_8BIT (0x0<<28)
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#define PORTSC_PTW_16BIT (0x1<<28)
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/* bit 31-30 are port transceiver select */
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#define PORTSC_PTS_UTMI (0x0<<30)
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#define PORTSC_PTS_ULPI (0x2<<30)
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#define PORTSC_PTS_FSLS_SERIAL (0x3<<30)
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#define PORTSC_PTS_BIT_POS (30)
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#define PORTSC_W1C_BITS \
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(PORTSC_CONNECT_STATUS_CHANGE | \
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PORTSC_PORT_EN_DIS_CHANGE | \
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PORTSC_OVER_CUURENT_CHG)
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/* OTG Status Control Register Bit Masks */
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#define OTGSC_CTRL_VBUS_DISCHARGE (0x1<<0)
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#define OTGSC_CTRL_VBUS_CHARGE (0x1<<1)
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#define OTGSC_CTRL_OTG_TERMINATION (0x1<<3)
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#define OTGSC_CTRL_DATA_PULSING (0x1<<4)
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#define OTGSC_CTRL_ID_PULL_EN (0x1<<5)
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#define OTGSC_HA_DATA_PULSE (0x1<<6)
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#define OTGSC_HA_BA (0x1<<7)
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#define OTGSC_STS_USB_ID (0x1<<8)
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#define OTGSC_STS_A_VBUS_VALID (0x1<<9)
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#define OTGSC_STS_A_SESSION_VALID (0x1<<10)
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#define OTGSC_STS_B_SESSION_VALID (0x1<<11)
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#define OTGSC_STS_B_SESSION_END (0x1<<12)
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#define OTGSC_STS_1MS_TOGGLE (0x1<<13)
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#define OTGSC_STS_DATA_PULSING (0x1<<14)
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#define OTGSC_INTSTS_USB_ID (0x1<<16)
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#define OTGSC_INTSTS_A_VBUS_VALID (0x1<<17)
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#define OTGSC_INTSTS_A_SESSION_VALID (0x1<<18)
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#define OTGSC_INTSTS_B_SESSION_VALID (0x1<<19)
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#define OTGSC_INTSTS_B_SESSION_END (0x1<<20)
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#define OTGSC_INTSTS_1MS (0x1<<21)
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#define OTGSC_INTSTS_DATA_PULSING (0x1<<22)
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#define OTGSC_INTR_USB_ID_EN (0x1<<24)
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#define OTGSC_INTR_A_VBUS_VALID_EN (0x1<<25)
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#define OTGSC_INTR_A_SESSION_VALID_EN (0x1<<26)
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#define OTGSC_INTR_B_SESSION_VALID_EN (0x1<<27)
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#define OTGSC_INTR_B_SESSION_END_EN (0x1<<28)
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#define OTGSC_INTR_1MS_TIMER_EN (0x1<<29)
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#define OTGSC_INTR_DATA_PULSING_EN (0x1<<30)
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#define OTGSC_INTSTS_MASK (0x00ff0000)
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/* USB MODE Register Bit Masks */
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#define USB_MODE_CTRL_MODE_IDLE (0x0<<0)
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#define USB_MODE_CTRL_MODE_DEVICE (0x2<<0)
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#define USB_MODE_CTRL_MODE_HOST (0x3<<0)
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#define USB_MODE_CTRL_MODE_RSV (0x1<<0)
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#define USB_MODE_SETUP_LOCK_OFF (0x1<<3)
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#define USB_MODE_STREAM_DISABLE (0x1<<4)
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#define USB_MODE_ES (0x1<<2) /* Endian Select */
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/* control Register Bit Masks */
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#define USB_CTRL_IOENB (0x1<<2)
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#define USB_CTRL_ULPI_INT0EN (0x1<<0)
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/* BCSR5 */
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#define BCSR5_INT_USB (0x02)
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/* USB module clk cfg */
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#define SCCR_OFFS (0xA08)
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#define SCCR_USB_CLK_DISABLE (0x00000000) /* USB clk disable */
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#define SCCR_USB_MPHCM_11 (0x00c00000)
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#define SCCR_USB_MPHCM_01 (0x00400000)
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#define SCCR_USB_MPHCM_10 (0x00800000)
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#define SCCR_USB_DRCM_11 (0x00300000)
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#define SCCR_USB_DRCM_01 (0x00100000)
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#define SCCR_USB_DRCM_10 (0x00200000)
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#define SICRL_OFFS (0x114)
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#define SICRL_USB0 (0x40000000)
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#define SICRL_USB1 (0x20000000)
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#define SICRH_OFFS (0x118)
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#define SICRH_USB_UTMI (0x00020000)
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/* OTG interrupt enable bit masks */
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#define OTGSC_INTERRUPT_ENABLE_BITS_MASK \
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(OTGSC_INTR_USB_ID_EN | \
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OTGSC_INTR_1MS_TIMER_EN | \
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OTGSC_INTR_A_VBUS_VALID_EN | \
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OTGSC_INTR_A_SESSION_VALID_EN | \
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OTGSC_INTR_B_SESSION_VALID_EN | \
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OTGSC_INTR_B_SESSION_END_EN | \
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OTGSC_INTR_DATA_PULSING_EN)
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/* OTG interrupt status bit masks */
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#define OTGSC_INTERRUPT_STATUS_BITS_MASK \
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(OTGSC_INTSTS_USB_ID | \
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OTGSC_INTR_1MS_TIMER_EN | \
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OTGSC_INTSTS_A_VBUS_VALID | \
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OTGSC_INTSTS_A_SESSION_VALID | \
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OTGSC_INTSTS_B_SESSION_VALID | \
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OTGSC_INTSTS_B_SESSION_END | \
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OTGSC_INTSTS_DATA_PULSING)
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/*
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* A-DEVICE timing constants
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*/
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/* Wait for VBUS Rise */
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#define TA_WAIT_VRISE (100) /* a_wait_vrise 100 ms, section: 6.6.5.1 */
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/* Wait for B-Connect */
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#define TA_WAIT_BCON (10000) /* a_wait_bcon > 1 sec, section: 6.6.5.2
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* This is only used to get out of
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* OTG_STATE_A_WAIT_BCON state if there was
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* no connection for these many milliseconds
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*/
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/* A-Idle to B-Disconnect */
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/* It is necessary for this timer to be more than 750 ms because of a bug in OPT
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* test 5.4 in which B OPT disconnects after 750 ms instead of 75ms as stated
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* in the test description
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*/
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#define TA_AIDL_BDIS (5000) /* a_suspend minimum 200 ms, section: 6.6.5.3 */
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/* B-Idle to A-Disconnect */
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#define TA_BIDL_ADIS (12) /* 3 to 200 ms */
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/* B-device timing constants */
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/* Data-Line Pulse Time*/
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#define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms, section:5.3.3 */
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#define TB_DATA_PLS_MIN (5) /* minimum 5 ms */
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#define TB_DATA_PLS_MAX (10) /* maximum 10 ms */
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/* SRP Initiate Time */
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#define TB_SRP_INIT (100) /* b_srp_init,maximum 100 ms, section:5.3.8 */
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/* SRP Fail Time */
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#define TB_SRP_FAIL (7000) /* b_srp_init,Fail time 5~30s, section:6.8.2.2*/
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/* SRP result wait time */
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#define TB_SRP_WAIT (60)
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/* VBus time */
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#define TB_VBUS_PLS (30) /* time to keep vbus pulsing asserted */
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/* Discharge time */
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/* This time should be less than 10ms. It varies from system to system. */
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#define TB_VBUS_DSCHRG (8)
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/* A-SE0 to B-Reset */
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#define TB_ASE0_BRST (20) /* b_wait_acon, mini 3.125 ms,section:6.8.2.4 */
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/* A bus suspend timer before we can switch to b_wait_aconn */
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#define TB_A_SUSPEND (7)
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#define TB_BUS_RESUME (12)
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/* SE0 Time Before SRP */
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#define TB_SE0_SRP (2) /* b_idle,minimum 2 ms, section:5.3.2 */
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#define SET_OTG_STATE(phy, newstate) ((phy)->otg->state = newstate)
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struct usb_dr_mmap {
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/* Capability register */
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u8 res1[256];
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u16 caplength; /* Capability Register Length */
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u16 hciversion; /* Host Controller Interface Version */
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|
u32 hcsparams; /* Host Controller Structual Parameters */
|
||
|
|
u32 hccparams; /* Host Controller Capability Parameters */
|
||
|
|
u8 res2[20];
|
||
|
|
u32 dciversion; /* Device Controller Interface Version */
|
||
|
|
u32 dccparams; /* Device Controller Capability Parameters */
|
||
|
|
u8 res3[24];
|
||
|
|
/* Operation register */
|
||
|
|
u32 usbcmd; /* USB Command Register */
|
||
|
|
u32 usbsts; /* USB Status Register */
|
||
|
|
u32 usbintr; /* USB Interrupt Enable Register */
|
||
|
|
u32 frindex; /* Frame Index Register */
|
||
|
|
u8 res4[4];
|
||
|
|
u32 deviceaddr; /* Device Address */
|
||
|
|
u32 endpointlistaddr; /* Endpoint List Address Register */
|
||
|
|
u8 res5[4];
|
||
|
|
u32 burstsize; /* Master Interface Data Burst Size Register */
|
||
|
|
u32 txttfilltuning; /* Transmit FIFO Tuning Controls Register */
|
||
|
|
u8 res6[8];
|
||
|
|
u32 ulpiview; /* ULPI register access */
|
||
|
|
u8 res7[12];
|
||
|
|
u32 configflag; /* Configure Flag Register */
|
||
|
|
u32 portsc; /* Port 1 Status and Control Register */
|
||
|
|
u8 res8[28];
|
||
|
|
u32 otgsc; /* On-The-Go Status and Control */
|
||
|
|
u32 usbmode; /* USB Mode Register */
|
||
|
|
u32 endptsetupstat; /* Endpoint Setup Status Register */
|
||
|
|
u32 endpointprime; /* Endpoint Initialization Register */
|
||
|
|
u32 endptflush; /* Endpoint Flush Register */
|
||
|
|
u32 endptstatus; /* Endpoint Status Register */
|
||
|
|
u32 endptcomplete; /* Endpoint Complete Register */
|
||
|
|
u32 endptctrl[6]; /* Endpoint Control Registers */
|
||
|
|
u8 res9[552];
|
||
|
|
u32 snoop1;
|
||
|
|
u32 snoop2;
|
||
|
|
u32 age_cnt_thresh; /* Age Count Threshold Register */
|
||
|
|
u32 pri_ctrl; /* Priority Control Register */
|
||
|
|
u32 si_ctrl; /* System Interface Control Register */
|
||
|
|
u8 res10[236];
|
||
|
|
u32 control; /* General Purpose Control Register */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct fsl_otg_timer {
|
||
|
|
unsigned long expires; /* Number of count increase to timeout */
|
||
|
|
unsigned long count; /* Tick counter */
|
||
|
|
void (*function)(unsigned long); /* Timeout function */
|
||
|
|
unsigned long data; /* Data passed to function */
|
||
|
|
struct list_head list;
|
||
|
|
};
|
||
|
|
|
||
|
|
inline struct fsl_otg_timer *otg_timer_initializer
|
||
|
|
(void (*function)(unsigned long), unsigned long expires, unsigned long data)
|
||
|
|
{
|
||
|
|
struct fsl_otg_timer *timer;
|
||
|
|
|
||
|
|
timer = kmalloc(sizeof(struct fsl_otg_timer), GFP_KERNEL);
|
||
|
|
if (!timer)
|
||
|
|
return NULL;
|
||
|
|
timer->function = function;
|
||
|
|
timer->expires = expires;
|
||
|
|
timer->data = data;
|
||
|
|
return timer;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct fsl_otg {
|
||
|
|
struct usb_phy phy;
|
||
|
|
struct otg_fsm fsm;
|
||
|
|
struct usb_dr_mmap *dr_mem_map;
|
||
|
|
struct delayed_work otg_event;
|
||
|
|
|
||
|
|
/* used for usb host */
|
||
|
|
struct work_struct work_wq;
|
||
|
|
u8 host_working;
|
||
|
|
|
||
|
|
int irq;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct fsl_otg_config {
|
||
|
|
u8 otg_port;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define FSL_OTG_NAME "fsl-usb2-otg"
|
||
|
|
|
||
|
|
void fsl_otg_add_timer(struct otg_fsm *fsm, void *timer);
|
||
|
|
void fsl_otg_del_timer(struct otg_fsm *fsm, void *timer);
|
||
|
|
void fsl_otg_pulse_vbus(void);
|