141288b3a3
Allows for easy configuration of the VBUS indicator related ULPI config bits. Also move the external indicator setup from ulpi_set_vbus() to the new function. Signed-off-by: Lucas Stach <dev@lynxeye.de> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
320 lines
9.5 KiB
C
320 lines
9.5 KiB
C
/*
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* Generic ULPI interface.
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*
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* Copyright (C) 2011 Jana Rapava <fermata7@gmail.com>
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* Copyright (C) 2011 CompuLab, Ltd. <www.compulab.co.il>
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*
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* Authors: Jana Rapava <fermata7@gmail.com>
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* Igor Grinberg <grinberg@compulab.co.il>
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*
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* Register offsets taken from:
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* linux/include/linux/usb/ulpi.h
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*
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* Original Copyrights follow:
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* Copyright (C) 2010 Nokia Corporation
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*
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* This software is distributed under the terms of the GNU General
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* Public License ("GPL") as published by the Free Software Foundation,
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* version 2 of that License.
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*/
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#ifndef __USB_ULPI_H__
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#define __USB_ULPI_H__
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#define ULPI_ERROR (1 << 8) /* overflow from any register value */
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#ifndef CONFIG_USB_ULPI_TIMEOUT
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#define CONFIG_USB_ULPI_TIMEOUT 1000 /* timeout in us */
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#endif
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/*
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* ulpi view port address and
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* Port_number that can be passed.
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* Any additional data to be passed can
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* be extended from this structure
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*/
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struct ulpi_viewport {
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u32 viewport_addr;
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u32 port_num;
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};
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/*
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* Initialize the ULPI transciever and check the interface integrity.
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* @ulpi_vp - structure containing ULPI viewport data
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_init(struct ulpi_viewport *ulpi_vp);
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/*
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* Select transceiver speed.
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* @speed - ULPI_FC_HIGH_SPEED, ULPI_FC_FULL_SPEED (default),
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* ULPI_FC_LOW_SPEED, ULPI_FC_FS4LS
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_select_transceiver(struct ulpi_viewport *ulpi_vp, unsigned speed);
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/*
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* Enable/disable VBUS.
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* @ext_power - external VBUS supply is used (default is false)
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* @ext_indicator - external VBUS over-current indicator is used
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_set_vbus(struct ulpi_viewport *ulpi_vp, int on, int ext_power);
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/*
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* Configure VBUS indicator
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* @external - external VBUS over-current indicator is used
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* @passthru - disables ANDing of internal VBUS comparator
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* with external VBUS input
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* @complement - inverts the external VBUS input
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*/
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int ulpi_set_vbus_indicator(struct ulpi_viewport *ulpi_vp, int external,
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int passthru, int complement);
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/*
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* Enable/disable pull-down resistors on D+ and D- USB lines.
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_set_pd(struct ulpi_viewport *ulpi_vp, int enable);
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/*
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* Select OpMode.
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* @opmode - ULPI_FC_OPMODE_NORMAL (default), ULPI_FC_OPMODE_NONDRIVING,
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* ULPI_FC_OPMODE_DISABLE_NRZI, ULPI_FC_OPMODE_NOSYNC_NOEOP
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_opmode_sel(struct ulpi_viewport *ulpi_vp, unsigned opmode);
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/*
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* Switch to Serial Mode.
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* @smode - ULPI_IFACE_6_PIN_SERIAL_MODE or ULPI_IFACE_3_PIN_SERIAL_MODE
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*
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* Notes:
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* Switches immediately to Serial Mode.
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* To return from Serial Mode, STP line needs to be asserted.
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*/
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int ulpi_serial_mode_enable(struct ulpi_viewport *ulpi_vp, unsigned smode);
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/*
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* Put PHY into low power mode.
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*
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* Notes:
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* STP line must be driven low to keep the PHY in suspend.
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* To resume the PHY, STP line needs to be asserted.
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*/
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int ulpi_suspend(struct ulpi_viewport *ulpi_vp);
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/*
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* Reset the transceiver. ULPI interface and registers are not affected.
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_reset(struct ulpi_viewport *ulpi_vp);
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/* ULPI access methods below must be implemented for each ULPI viewport. */
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/*
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* Write to the ULPI PHY register via the viewport.
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* @reg - the ULPI register (one of the fields in struct ulpi_regs).
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* @value - the value - only 8 lower bits are used, others ignored.
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_write(struct ulpi_viewport *ulpi_vp, u8 *reg, u32 value);
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/*
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* Read the ULPI PHY register content via the viewport.
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* @reg - the ULPI register (one of the fields in struct ulpi_regs).
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*
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* returns register content on success, ULPI_ERROR on failure.
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*/
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u32 ulpi_read(struct ulpi_viewport *ulpi_vp, u8 *reg);
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/*
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* Wait for the reset to complete.
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* The Link must not attempt to access the PHY until the reset has
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* completed and DIR line is de-asserted.
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*/
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int ulpi_reset_wait(struct ulpi_viewport *ulpi_vp);
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/* Access Extended Register Set (indicator) */
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#define ACCESS_EXT_REGS_OFFSET 0x2f /* read-write */
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/* Vendor-specific */
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#define VENDOR_SPEC_OFFSET 0x30
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/*
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* Extended Register Set
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*
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* Addresses 0x00-0x3F map directly to Immediate Register Set.
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* Addresses 0x40-0x7F are reserved.
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* Addresses 0x80-0xff are vendor-specific.
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*/
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#define EXT_VENDOR_SPEC_OFFSET 0x80
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/* ULPI registers, bits and offsets definitions */
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struct ulpi_regs {
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/* Vendor ID and Product ID: 0x00 - 0x03 Read-only */
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u8 vendor_id_low;
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u8 vendor_id_high;
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u8 product_id_low;
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u8 product_id_high;
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/* Function Control: 0x04 - 0x06 Read */
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u8 function_ctrl; /* 0x04 Write */
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u8 function_ctrl_set; /* 0x05 Set */
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u8 function_ctrl_clear; /* 0x06 Clear */
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/* Interface Control: 0x07 - 0x09 Read */
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u8 iface_ctrl; /* 0x07 Write */
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u8 iface_ctrl_set; /* 0x08 Set */
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u8 iface_ctrl_clear; /* 0x09 Clear */
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/* OTG Control: 0x0A - 0x0C Read */
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u8 otg_ctrl; /* 0x0A Write */
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u8 otg_ctrl_set; /* 0x0B Set */
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u8 otg_ctrl_clear; /* 0x0C Clear */
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/* USB Interrupt Enable Rising: 0x0D - 0x0F Read */
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u8 usb_ie_rising; /* 0x0D Write */
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u8 usb_ie_rising_set; /* 0x0E Set */
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u8 usb_ie_rising_clear; /* 0x0F Clear */
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/* USB Interrupt Enable Falling: 0x10 - 0x12 Read */
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u8 usb_ie_falling; /* 0x10 Write */
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u8 usb_ie_falling_set; /* 0x11 Set */
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u8 usb_ie_falling_clear; /* 0x12 Clear */
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/* USB Interrupt Status: 0x13 Read-only */
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u8 usb_int_status;
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/* USB Interrupt Latch: 0x14 Read-only with auto-clear */
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u8 usb_int_latch;
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/* Debug: 0x15 Read-only */
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u8 debug;
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/* Scratch Register: 0x16 - 0x18 Read */
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u8 scratch; /* 0x16 Write */
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u8 scratch_set; /* 0x17 Set */
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u8 scratch_clear; /* 0x18 Clear */
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/*
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* Optional Carkit registers:
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* Carkit Control: 0x19 - 0x1B Read
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*/
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u8 carkit_ctrl; /* 0x19 Write */
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u8 carkit_ctrl_set; /* 0x1A Set */
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u8 carkit_ctrl_clear; /* 0x1B Clear */
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/* Carkit Interrupt Delay: 0x1C Read, Write */
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u8 carkit_int_delay;
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/* Carkit Interrupt Enable: 0x1D - 0x1F Read */
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u8 carkit_ie; /* 0x1D Write */
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u8 carkit_ie_set; /* 0x1E Set */
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u8 carkit_ie_clear; /* 0x1F Clear */
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/* Carkit Interrupt Status: 0x20 Read-only */
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u8 carkit_int_status;
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/* Carkit Interrupt Latch: 0x21 Read-only with auto-clear */
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u8 carkit_int_latch;
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/* Carkit Pulse Control: 0x22 - 0x24 Read */
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u8 carkit_pulse_ctrl; /* 0x22 Write */
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u8 carkit_pulse_ctrl_set; /* 0x23 Set */
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u8 carkit_pulse_ctrl_clear; /* 0x24 Clear */
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/*
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* Other optional registers:
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* Transmit Positive Width: 0x25 Read, Write
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*/
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u8 transmit_pos_width;
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/* Transmit Negative Width: 0x26 Read, Write */
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u8 transmit_neg_width;
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/* Receive Polarity Recovery: 0x27 Read, Write */
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u8 recv_pol_recovery;
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/*
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* Addresses 0x28 - 0x2E are reserved, so we use offsets
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* for immediate registers with higher addresses
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*/
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};
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/*
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* Register Bits
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*/
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/* Function Control */
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#define ULPI_FC_XCVRSEL_MASK (3 << 0)
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#define ULPI_FC_HIGH_SPEED (0 << 0)
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#define ULPI_FC_FULL_SPEED (1 << 0)
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#define ULPI_FC_LOW_SPEED (2 << 0)
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#define ULPI_FC_FS4LS (3 << 0)
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#define ULPI_FC_TERMSELECT (1 << 2)
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#define ULPI_FC_OPMODE_MASK (3 << 3)
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#define ULPI_FC_OPMODE_NORMAL (0 << 3)
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#define ULPI_FC_OPMODE_NONDRIVING (1 << 3)
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#define ULPI_FC_OPMODE_DISABLE_NRZI (2 << 3)
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#define ULPI_FC_OPMODE_NOSYNC_NOEOP (3 << 3)
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#define ULPI_FC_RESET (1 << 5)
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#define ULPI_FC_SUSPENDM (1 << 6)
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/* Interface Control */
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#define ULPI_IFACE_6_PIN_SERIAL_MODE (1 << 0)
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#define ULPI_IFACE_3_PIN_SERIAL_MODE (1 << 1)
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#define ULPI_IFACE_CARKITMODE (1 << 2)
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#define ULPI_IFACE_CLOCKSUSPENDM (1 << 3)
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#define ULPI_IFACE_AUTORESUME (1 << 4)
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#define ULPI_IFACE_EXTVBUS_COMPLEMENT (1 << 5)
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#define ULPI_IFACE_PASSTHRU (1 << 6)
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#define ULPI_IFACE_PROTECT_IFC_DISABLE (1 << 7)
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/* OTG Control */
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#define ULPI_OTG_ID_PULLUP (1 << 0)
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#define ULPI_OTG_DP_PULLDOWN (1 << 1)
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#define ULPI_OTG_DM_PULLDOWN (1 << 2)
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#define ULPI_OTG_DISCHRGVBUS (1 << 3)
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#define ULPI_OTG_CHRGVBUS (1 << 4)
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#define ULPI_OTG_DRVVBUS (1 << 5)
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#define ULPI_OTG_DRVVBUS_EXT (1 << 6)
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#define ULPI_OTG_EXTVBUSIND (1 << 7)
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/*
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* USB Interrupt Enable Rising,
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* USB Interrupt Enable Falling,
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* USB Interrupt Status and
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* USB Interrupt Latch
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*/
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#define ULPI_INT_HOST_DISCONNECT (1 << 0)
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#define ULPI_INT_VBUS_VALID (1 << 1)
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#define ULPI_INT_SESS_VALID (1 << 2)
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#define ULPI_INT_SESS_END (1 << 3)
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#define ULPI_INT_IDGRD (1 << 4)
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/* Debug */
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#define ULPI_DEBUG_LINESTATE0 (1 << 0)
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#define ULPI_DEBUG_LINESTATE1 (1 << 1)
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/* Carkit Control */
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#define ULPI_CARKIT_CTRL_CARKITPWR (1 << 0)
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#define ULPI_CARKIT_CTRL_IDGNDDRV (1 << 1)
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#define ULPI_CARKIT_CTRL_TXDEN (1 << 2)
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#define ULPI_CARKIT_CTRL_RXDEN (1 << 3)
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#define ULPI_CARKIT_CTRL_SPKLEFTEN (1 << 4)
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#define ULPI_CARKIT_CTRL_SPKRIGHTEN (1 << 5)
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#define ULPI_CARKIT_CTRL_MICEN (1 << 6)
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/* Carkit Interrupt Enable */
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#define ULPI_CARKIT_INT_EN_IDFLOAT_RISE (1 << 0)
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#define ULPI_CARKIT_INT_EN_IDFLOAT_FALL (1 << 1)
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#define ULPI_CARKIT_INT_EN_CARINTDET (1 << 2)
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#define ULPI_CARKIT_INT_EN_DP_RISE (1 << 3)
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#define ULPI_CARKIT_INT_EN_DP_FALL (1 << 4)
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/* Carkit Interrupt Status and Latch */
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#define ULPI_CARKIT_INT_IDFLOAT (1 << 0)
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#define ULPI_CARKIT_INT_CARINTDET (1 << 1)
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#define ULPI_CARKIT_INT_DP (1 << 2)
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/* Carkit Pulse Control*/
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#define ULPI_CARKIT_PLS_CTRL_TXPLSEN (1 << 0)
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#define ULPI_CARKIT_PLS_CTRL_RXPLSEN (1 << 1)
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#define ULPI_CARKIT_PLS_CTRL_SPKRLEFT_BIASEN (1 << 2)
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#define ULPI_CARKIT_PLS_CTRL_SPKRRIGHT_BIASEN (1 << 3)
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#endif /* __USB_ULPI_H__ */
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