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USB: add Freescale USB OTG Transceiver driver
Slightly reworked and cleaned up driver from Freescale LTIB for MPC5121E. The driver has been ported to the current kernel, proc interface "/proc/driver/fsl_usb2_otg" has been replaced by sysfs interface. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
parent
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commit
0807c500a1
6 changed files with 2088 additions and 0 deletions
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@ -122,4 +122,12 @@ config AB8500_USB
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This transceiver supports high and full speed devices plus,
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This transceiver supports high and full speed devices plus,
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in host mode, low speed.
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in host mode, low speed.
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config FSL_USB2_OTG
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bool "Freescale USB OTG Transceiver Driver"
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depends on USB_EHCI_FSL && USB_GADGET_FSL_USB2
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select USB_OTG
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select USB_OTG_UTILS
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help
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Enable this to support Freescale USB OTG transceiver.
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endif # USB || OTG
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endif # USB || OTG
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@ -19,3 +19,5 @@ obj-$(CONFIG_USB_ULPI) += ulpi.o
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obj-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi_viewport.o
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obj-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi_viewport.o
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obj-$(CONFIG_USB_MSM_OTG) += msm_otg.o
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obj-$(CONFIG_USB_MSM_OTG) += msm_otg.o
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obj-$(CONFIG_AB8500_USB) += ab8500-usb.o
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obj-$(CONFIG_AB8500_USB) += ab8500-usb.o
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fsl_usb2_otg-objs := fsl_otg.o otg_fsm.o
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obj-$(CONFIG_FSL_USB2_OTG) += fsl_usb2_otg.o
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1169
drivers/usb/otg/fsl_otg.c
Normal file
1169
drivers/usb/otg/fsl_otg.c
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File diff suppressed because it is too large
Load diff
406
drivers/usb/otg/fsl_otg.h
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406
drivers/usb/otg/fsl_otg.h
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@ -0,0 +1,406 @@
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/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "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 */
|
||||||
|
|
||||||
|
|
||||||
|
/* Data-Line Pulse Time*/
|
||||||
|
#define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms, section:5.3.3 */
|
||||||
|
#define TB_DATA_PLS_MIN (5) /* minimum 5 ms */
|
||||||
|
#define TB_DATA_PLS_MAX (10) /* maximum 10 ms */
|
||||||
|
|
||||||
|
/* SRP Initiate Time */
|
||||||
|
#define TB_SRP_INIT (100) /* b_srp_init,maximum 100 ms, section:5.3.8 */
|
||||||
|
|
||||||
|
/* SRP Fail Time */
|
||||||
|
#define TB_SRP_FAIL (7000) /* b_srp_init,Fail time 5~30s, section:6.8.2.2*/
|
||||||
|
|
||||||
|
/* SRP result wait time */
|
||||||
|
#define TB_SRP_WAIT (60)
|
||||||
|
|
||||||
|
/* VBus time */
|
||||||
|
#define TB_VBUS_PLS (30) /* time to keep vbus pulsing asserted */
|
||||||
|
|
||||||
|
/* Discharge time */
|
||||||
|
/* This time should be less than 10ms. It varies from system to system. */
|
||||||
|
#define TB_VBUS_DSCHRG (8)
|
||||||
|
|
||||||
|
/* A-SE0 to B-Reset */
|
||||||
|
#define TB_ASE0_BRST (20) /* b_wait_acon, mini 3.125 ms,section:6.8.2.4 */
|
||||||
|
|
||||||
|
/* A bus suspend timer before we can switch to b_wait_aconn */
|
||||||
|
#define TB_A_SUSPEND (7)
|
||||||
|
#define TB_BUS_RESUME (12)
|
||||||
|
|
||||||
|
/* SE0 Time Before SRP */
|
||||||
|
#define TB_SE0_SRP (2) /* b_idle,minimum 2 ms, section:5.3.2 */
|
||||||
|
|
||||||
|
#define SET_OTG_STATE(otg_ptr, newstate) ((otg_ptr)->state = newstate)
|
||||||
|
|
||||||
|
struct usb_dr_mmap {
|
||||||
|
/* Capability register */
|
||||||
|
u8 res1[256];
|
||||||
|
u16 caplength; /* Capability Register Length */
|
||||||
|
u16 hciversion; /* Host Controller Interface Version */
|
||||||
|
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 otg_transceiver otg;
|
||||||
|
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;
|
||||||
|
};
|
||||||
|
|
||||||
|
/* For SRP and HNP handle */
|
||||||
|
#define FSL_OTG_MAJOR 240
|
||||||
|
#define FSL_OTG_NAME "fsl-usb2-otg"
|
||||||
|
/* Command to OTG driver ioctl */
|
||||||
|
#define OTG_IOCTL_MAGIC FSL_OTG_MAJOR
|
||||||
|
/* if otg work as host, it should return 1, otherwise return 0 */
|
||||||
|
#define GET_OTG_STATUS _IOR(OTG_IOCTL_MAGIC, 1, int)
|
||||||
|
#define SET_A_SUSPEND_REQ _IOW(OTG_IOCTL_MAGIC, 2, int)
|
||||||
|
#define SET_A_BUS_DROP _IOW(OTG_IOCTL_MAGIC, 3, int)
|
||||||
|
#define SET_A_BUS_REQ _IOW(OTG_IOCTL_MAGIC, 4, int)
|
||||||
|
#define SET_B_BUS_REQ _IOW(OTG_IOCTL_MAGIC, 5, int)
|
||||||
|
#define GET_A_SUSPEND_REQ _IOR(OTG_IOCTL_MAGIC, 6, int)
|
||||||
|
#define GET_A_BUS_DROP _IOR(OTG_IOCTL_MAGIC, 7, int)
|
||||||
|
#define GET_A_BUS_REQ _IOR(OTG_IOCTL_MAGIC, 8, int)
|
||||||
|
#define GET_B_BUS_REQ _IOR(OTG_IOCTL_MAGIC, 9, int)
|
||||||
|
|
||||||
|
void fsl_otg_add_timer(void *timer);
|
||||||
|
void fsl_otg_del_timer(void *timer);
|
||||||
|
void fsl_otg_pulse_vbus(void);
|
349
drivers/usb/otg/otg_fsm.c
Normal file
349
drivers/usb/otg/otg_fsm.c
Normal file
|
@ -0,0 +1,349 @@
|
||||||
|
/*
|
||||||
|
* OTG Finite State Machine from OTG spec
|
||||||
|
*
|
||||||
|
* Copyright (C) 2007,2008 Freescale Semiconductor, Inc.
|
||||||
|
*
|
||||||
|
* Author: Li Yang <LeoLi@freescale.com>
|
||||||
|
* Jerry Huang <Chang-Ming.Huang@freescale.com>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by the
|
||||||
|
* Free Software Foundation; either version 2 of the License, or (at your
|
||||||
|
* option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful, but
|
||||||
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License along
|
||||||
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||||
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/kernel.h>
|
||||||
|
#include <linux/types.h>
|
||||||
|
#include <linux/spinlock.h>
|
||||||
|
#include <linux/delay.h>
|
||||||
|
#include <linux/usb.h>
|
||||||
|
#include <linux/usb/gadget.h>
|
||||||
|
#include <linux/usb/otg.h>
|
||||||
|
#include <linux/types.h>
|
||||||
|
|
||||||
|
#include "otg_fsm.h"
|
||||||
|
|
||||||
|
/* Change USB protocol when there is a protocol change */
|
||||||
|
static int otg_set_protocol(struct otg_fsm *fsm, int protocol)
|
||||||
|
{
|
||||||
|
int ret = 0;
|
||||||
|
|
||||||
|
if (fsm->protocol != protocol) {
|
||||||
|
VDBG("Changing role fsm->protocol= %d; new protocol= %d\n",
|
||||||
|
fsm->protocol, protocol);
|
||||||
|
/* stop old protocol */
|
||||||
|
if (fsm->protocol == PROTO_HOST)
|
||||||
|
ret = fsm->ops->start_host(fsm, 0);
|
||||||
|
else if (fsm->protocol == PROTO_GADGET)
|
||||||
|
ret = fsm->ops->start_gadget(fsm, 0);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
/* start new protocol */
|
||||||
|
if (protocol == PROTO_HOST)
|
||||||
|
ret = fsm->ops->start_host(fsm, 1);
|
||||||
|
else if (protocol == PROTO_GADGET)
|
||||||
|
ret = fsm->ops->start_gadget(fsm, 1);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
fsm->protocol = protocol;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int state_changed;
|
||||||
|
|
||||||
|
/* Called when leaving a state. Do state clean up jobs here */
|
||||||
|
void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
|
||||||
|
{
|
||||||
|
switch (old_state) {
|
||||||
|
case OTG_STATE_B_IDLE:
|
||||||
|
otg_del_timer(fsm, b_se0_srp_tmr);
|
||||||
|
fsm->b_se0_srp = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_SRP_INIT:
|
||||||
|
fsm->b_srp_done = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_PERIPHERAL:
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_WAIT_ACON:
|
||||||
|
otg_del_timer(fsm, b_ase0_brst_tmr);
|
||||||
|
fsm->b_ase0_brst_tmout = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_HOST:
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_IDLE:
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_VRISE:
|
||||||
|
otg_del_timer(fsm, a_wait_vrise_tmr);
|
||||||
|
fsm->a_wait_vrise_tmout = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_BCON:
|
||||||
|
otg_del_timer(fsm, a_wait_bcon_tmr);
|
||||||
|
fsm->a_wait_bcon_tmout = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_HOST:
|
||||||
|
otg_del_timer(fsm, a_wait_enum_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_SUSPEND:
|
||||||
|
otg_del_timer(fsm, a_aidl_bdis_tmr);
|
||||||
|
fsm->a_aidl_bdis_tmout = 0;
|
||||||
|
fsm->a_suspend_req = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_PERIPHERAL:
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_VFALL:
|
||||||
|
otg_del_timer(fsm, a_wait_vrise_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_VBUS_ERR:
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called when entering a state */
|
||||||
|
int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
|
||||||
|
{
|
||||||
|
state_changed = 1;
|
||||||
|
if (fsm->transceiver->state == new_state)
|
||||||
|
return 0;
|
||||||
|
VDBG("Set state: %s\n", otg_state_string(new_state));
|
||||||
|
otg_leave_state(fsm, fsm->transceiver->state);
|
||||||
|
switch (new_state) {
|
||||||
|
case OTG_STATE_B_IDLE:
|
||||||
|
otg_drv_vbus(fsm, 0);
|
||||||
|
otg_chrg_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_UNDEF);
|
||||||
|
otg_add_timer(fsm, b_se0_srp_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_SRP_INIT:
|
||||||
|
otg_start_pulse(fsm);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_UNDEF);
|
||||||
|
otg_add_timer(fsm, b_srp_fail_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_PERIPHERAL:
|
||||||
|
otg_chrg_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 1);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_GADGET);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_WAIT_ACON:
|
||||||
|
otg_chrg_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
otg_add_timer(fsm, b_ase0_brst_tmr);
|
||||||
|
fsm->a_bus_suspend = 0;
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_HOST:
|
||||||
|
otg_chrg_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 1);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
usb_bus_start_enum(fsm->transceiver->host,
|
||||||
|
fsm->transceiver->host->otg_port);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_IDLE:
|
||||||
|
otg_drv_vbus(fsm, 0);
|
||||||
|
otg_chrg_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_VRISE:
|
||||||
|
otg_drv_vbus(fsm, 1);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
otg_add_timer(fsm, a_wait_vrise_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_BCON:
|
||||||
|
otg_drv_vbus(fsm, 1);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
otg_add_timer(fsm, a_wait_bcon_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_HOST:
|
||||||
|
otg_drv_vbus(fsm, 1);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 1);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
/*
|
||||||
|
* When HNP is triggered while a_bus_req = 0, a_host will
|
||||||
|
* suspend too fast to complete a_set_b_hnp_en
|
||||||
|
*/
|
||||||
|
if (!fsm->a_bus_req || fsm->a_suspend_req)
|
||||||
|
otg_add_timer(fsm, a_wait_enum_tmr);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_SUSPEND:
|
||||||
|
otg_drv_vbus(fsm, 1);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
otg_add_timer(fsm, a_aidl_bdis_tmr);
|
||||||
|
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_PERIPHERAL:
|
||||||
|
otg_loc_conn(fsm, 1);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_GADGET);
|
||||||
|
otg_drv_vbus(fsm, 1);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_VFALL:
|
||||||
|
otg_drv_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_HOST);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_VBUS_ERR:
|
||||||
|
otg_drv_vbus(fsm, 0);
|
||||||
|
otg_loc_conn(fsm, 0);
|
||||||
|
otg_loc_sof(fsm, 0);
|
||||||
|
otg_set_protocol(fsm, PROTO_UNDEF);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
fsm->transceiver->state = new_state;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* State change judgement */
|
||||||
|
int otg_statemachine(struct otg_fsm *fsm)
|
||||||
|
{
|
||||||
|
enum usb_otg_state state;
|
||||||
|
unsigned long flags;
|
||||||
|
|
||||||
|
spin_lock_irqsave(&fsm->lock, flags);
|
||||||
|
|
||||||
|
state = fsm->transceiver->state;
|
||||||
|
state_changed = 0;
|
||||||
|
/* State machine state change judgement */
|
||||||
|
|
||||||
|
switch (state) {
|
||||||
|
case OTG_STATE_UNDEFINED:
|
||||||
|
VDBG("fsm->id = %d\n", fsm->id);
|
||||||
|
if (fsm->id)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_IDLE);
|
||||||
|
else
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_IDLE);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_IDLE:
|
||||||
|
if (!fsm->id)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_IDLE);
|
||||||
|
else if (fsm->b_sess_vld && fsm->transceiver->gadget)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
|
||||||
|
else if (fsm->b_bus_req && fsm->b_sess_end && fsm->b_se0_srp)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_SRP_INIT);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_SRP_INIT:
|
||||||
|
if (!fsm->id || fsm->b_srp_done)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_IDLE);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_PERIPHERAL:
|
||||||
|
if (!fsm->id || !fsm->b_sess_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_IDLE);
|
||||||
|
else if (fsm->b_bus_req && fsm->transceiver->
|
||||||
|
gadget->b_hnp_enable && fsm->a_bus_suspend)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_WAIT_ACON);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_WAIT_ACON:
|
||||||
|
if (fsm->a_conn)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_HOST);
|
||||||
|
else if (!fsm->id || !fsm->b_sess_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_IDLE);
|
||||||
|
else if (fsm->a_bus_resume || fsm->b_ase0_brst_tmout) {
|
||||||
|
fsm->b_ase0_brst_tmout = 0;
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case OTG_STATE_B_HOST:
|
||||||
|
if (!fsm->id || !fsm->b_sess_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_IDLE);
|
||||||
|
else if (!fsm->b_bus_req || !fsm->a_conn)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_IDLE:
|
||||||
|
if (fsm->id)
|
||||||
|
otg_set_state(fsm, OTG_STATE_B_IDLE);
|
||||||
|
else if (!fsm->a_bus_drop && (fsm->a_bus_req || fsm->a_srp_det))
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_VRISE);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_VRISE:
|
||||||
|
if (fsm->id || fsm->a_bus_drop || fsm->a_vbus_vld ||
|
||||||
|
fsm->a_wait_vrise_tmout) {
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_BCON:
|
||||||
|
if (!fsm->a_vbus_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
|
||||||
|
else if (fsm->b_conn)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_HOST);
|
||||||
|
else if (fsm->id | fsm->a_bus_drop | fsm->a_wait_bcon_tmout)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_HOST:
|
||||||
|
if ((!fsm->a_bus_req || fsm->a_suspend_req) &&
|
||||||
|
fsm->transceiver->host->b_hnp_enable)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_SUSPEND);
|
||||||
|
else if (fsm->id || !fsm->b_conn || fsm->a_bus_drop)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
|
||||||
|
else if (!fsm->a_vbus_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_SUSPEND:
|
||||||
|
if (!fsm->b_conn && fsm->transceiver->host->b_hnp_enable)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_PERIPHERAL);
|
||||||
|
else if (!fsm->b_conn && !fsm->transceiver->host->b_hnp_enable)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
|
||||||
|
else if (fsm->a_bus_req || fsm->b_bus_resume)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_HOST);
|
||||||
|
else if (fsm->id || fsm->a_bus_drop || fsm->a_aidl_bdis_tmout)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
|
||||||
|
else if (!fsm->a_vbus_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_PERIPHERAL:
|
||||||
|
if (fsm->id || fsm->a_bus_drop)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
|
||||||
|
else if (fsm->b_bus_suspend)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
|
||||||
|
else if (!fsm->a_vbus_vld)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_WAIT_VFALL:
|
||||||
|
if (fsm->id || fsm->a_bus_req || (!fsm->a_sess_vld &&
|
||||||
|
!fsm->b_conn))
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_IDLE);
|
||||||
|
break;
|
||||||
|
case OTG_STATE_A_VBUS_ERR:
|
||||||
|
if (fsm->id || fsm->a_bus_drop || fsm->a_clr_err)
|
||||||
|
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
spin_unlock_irqrestore(&fsm->lock, flags);
|
||||||
|
|
||||||
|
VDBG("quit statemachine, changed = %d\n", state_changed);
|
||||||
|
return state_changed;
|
||||||
|
}
|
154
drivers/usb/otg/otg_fsm.h
Normal file
154
drivers/usb/otg/otg_fsm.h
Normal file
|
@ -0,0 +1,154 @@
|
||||||
|
/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc.
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by the
|
||||||
|
* Free Software Foundation; either version 2 of the License, or (at your
|
||||||
|
* option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful, but
|
||||||
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License along
|
||||||
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||||
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#undef DEBUG
|
||||||
|
#undef VERBOSE
|
||||||
|
|
||||||
|
#ifdef DEBUG
|
||||||
|
#define DBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt , \
|
||||||
|
__func__, ## args)
|
||||||
|
#else
|
||||||
|
#define DBG(fmt, args...) do {} while (0)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef VERBOSE
|
||||||
|
#define VDBG DBG
|
||||||
|
#else
|
||||||
|
#define VDBG(stuff...) do {} while (0)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef VERBOSE
|
||||||
|
#define MPC_LOC printk("Current Location [%s]:[%d]\n", __FILE__, __LINE__)
|
||||||
|
#else
|
||||||
|
#define MPC_LOC do {} while (0)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#define PROTO_UNDEF (0)
|
||||||
|
#define PROTO_HOST (1)
|
||||||
|
#define PROTO_GADGET (2)
|
||||||
|
|
||||||
|
/* OTG state machine according to the OTG spec */
|
||||||
|
struct otg_fsm {
|
||||||
|
/* Input */
|
||||||
|
int a_bus_resume;
|
||||||
|
int a_bus_suspend;
|
||||||
|
int a_conn;
|
||||||
|
int a_sess_vld;
|
||||||
|
int a_srp_det;
|
||||||
|
int a_vbus_vld;
|
||||||
|
int b_bus_resume;
|
||||||
|
int b_bus_suspend;
|
||||||
|
int b_conn;
|
||||||
|
int b_se0_srp;
|
||||||
|
int b_sess_end;
|
||||||
|
int b_sess_vld;
|
||||||
|
int id;
|
||||||
|
|
||||||
|
/* Internal variables */
|
||||||
|
int a_set_b_hnp_en;
|
||||||
|
int b_srp_done;
|
||||||
|
int b_hnp_enable;
|
||||||
|
|
||||||
|
/* Timeout indicator for timers */
|
||||||
|
int a_wait_vrise_tmout;
|
||||||
|
int a_wait_bcon_tmout;
|
||||||
|
int a_aidl_bdis_tmout;
|
||||||
|
int b_ase0_brst_tmout;
|
||||||
|
|
||||||
|
/* Informative variables */
|
||||||
|
int a_bus_drop;
|
||||||
|
int a_bus_req;
|
||||||
|
int a_clr_err;
|
||||||
|
int a_suspend_req;
|
||||||
|
int b_bus_req;
|
||||||
|
|
||||||
|
/* Output */
|
||||||
|
int drv_vbus;
|
||||||
|
int loc_conn;
|
||||||
|
int loc_sof;
|
||||||
|
|
||||||
|
struct otg_fsm_ops *ops;
|
||||||
|
struct otg_transceiver *transceiver;
|
||||||
|
|
||||||
|
/* Current usb protocol used: 0:undefine; 1:host; 2:client */
|
||||||
|
int protocol;
|
||||||
|
spinlock_t lock;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct otg_fsm_ops {
|
||||||
|
void (*chrg_vbus)(int on);
|
||||||
|
void (*drv_vbus)(int on);
|
||||||
|
void (*loc_conn)(int on);
|
||||||
|
void (*loc_sof)(int on);
|
||||||
|
void (*start_pulse)(void);
|
||||||
|
void (*add_timer)(void *timer);
|
||||||
|
void (*del_timer)(void *timer);
|
||||||
|
int (*start_host)(struct otg_fsm *fsm, int on);
|
||||||
|
int (*start_gadget)(struct otg_fsm *fsm, int on);
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
static inline void otg_chrg_vbus(struct otg_fsm *fsm, int on)
|
||||||
|
{
|
||||||
|
fsm->ops->chrg_vbus(on);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void otg_drv_vbus(struct otg_fsm *fsm, int on)
|
||||||
|
{
|
||||||
|
if (fsm->drv_vbus != on) {
|
||||||
|
fsm->drv_vbus = on;
|
||||||
|
fsm->ops->drv_vbus(on);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void otg_loc_conn(struct otg_fsm *fsm, int on)
|
||||||
|
{
|
||||||
|
if (fsm->loc_conn != on) {
|
||||||
|
fsm->loc_conn = on;
|
||||||
|
fsm->ops->loc_conn(on);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void otg_loc_sof(struct otg_fsm *fsm, int on)
|
||||||
|
{
|
||||||
|
if (fsm->loc_sof != on) {
|
||||||
|
fsm->loc_sof = on;
|
||||||
|
fsm->ops->loc_sof(on);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void otg_start_pulse(struct otg_fsm *fsm)
|
||||||
|
{
|
||||||
|
fsm->ops->start_pulse();
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void otg_add_timer(struct otg_fsm *fsm, void *timer)
|
||||||
|
{
|
||||||
|
fsm->ops->add_timer(timer);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void otg_del_timer(struct otg_fsm *fsm, void *timer)
|
||||||
|
{
|
||||||
|
fsm->ops->del_timer(timer);
|
||||||
|
}
|
||||||
|
|
||||||
|
int otg_statemachine(struct otg_fsm *fsm);
|
||||||
|
|
||||||
|
/* Defined by device specific driver, for different timer implementation */
|
||||||
|
extern struct fsl_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr,
|
||||||
|
*a_aidl_bdis_tmr, *b_ase0_brst_tmr, *b_se0_srp_tmr, *b_srp_fail_tmr,
|
||||||
|
*a_wait_enum_tmr;
|
Loading…
Reference in a new issue