From mboxrd@z Thu Jan 1 00:00:00 1970 From: Igor Grinberg Date: Thu, 24 Nov 2011 15:26:10 +0200 Subject: [U-Boot] [PATCH v3]ulpi: add generic ULPI functionality In-Reply-To: <1322137334-10490-1-git-send-email-fermata7@gmail.com> References: <1321118942-7180-1-git-send-email-fermata7@gmail.com> <1322137334-10490-1-git-send-email-fermata7@gmail.com> Message-ID: <4ECE45F2.9090309@compulab.co.il> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Jana, Good job! IMO, this version looks much better (although Marek is not happy with its schedule). Some final neats below and we're done. On 11/24/11 14:22, Jana Rapava wrote: > Add generic functions for ULPI init and setting bits in > ULPI registers. > > Signed-off-by: Jana Rapava > Cc: Marek Vasut > Cc: Remy Bohmer > Cc: Stefano Babic > Cc: Igor Grinberg > Cc: Wolfgang Grandegger > --- > Changes for v2: > - make code EHCI-independent > - use udelay() in waiting loop > - mark static functions as static > - naming changes > Changes for v3: > - merge with patch ulpi: add generic ULPI support header file > - rewrite ULPI interface in more functionality-oriented way > > Makefile | 1 + > drivers/usb/ulpi/Makefile | 45 ++++++++ > drivers/usb/ulpi/ulpi-viewport.c | 88 +++++++++++++++ > drivers/usb/ulpi/ulpi.c | 199 ++++++++++++++++++++++++++++++++++ > include/usb/ulpi.h | 222 ++++++++++++++++++++++++++++++++++++++ > 5 files changed, 555 insertions(+), 0 deletions(-) > create mode 100644 drivers/usb/ulpi/Makefile > create mode 100644 drivers/usb/ulpi/ulpi-viewport.c > create mode 100644 drivers/usb/ulpi/ulpi.c > create mode 100644 include/usb/ulpi.h > > diff --git a/Makefile b/Makefile > index dfe939f..70a1e1e 100644 > --- a/Makefile > +++ b/Makefile > @@ -272,6 +272,7 @@ LIBS += drivers/usb/gadget/libusb_gadget.o > LIBS += drivers/usb/host/libusb_host.o > LIBS += drivers/usb/musb/libusb_musb.o > LIBS += drivers/usb/phy/libusb_phy.o > +LIBS += drivers/usb/ulpi/libusb_ulpi.o > LIBS += drivers/video/libvideo.o > LIBS += drivers/watchdog/libwatchdog.o > LIBS += common/libcommon.o > diff --git a/drivers/usb/ulpi/Makefile b/drivers/usb/ulpi/Makefile > new file mode 100644 > index 0000000..a1a2244 > --- /dev/null > +++ b/drivers/usb/ulpi/Makefile > @@ -0,0 +1,45 @@ > +# > +# Copyright (C) 2011 Jana Rapava > +# See file CREDITS for list of people who contributed to this > +# project. > +# > +# 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., 59 Temple Place, Suite 330, Boston, > +# MA 02111-1307 USA > +# > + > +include $(TOPDIR)/config.mk > + > +LIB := $(obj)libusb_ulpi.o > + > +COBJS-$(CONFIG_USB_ULPI) += ulpi.o > +COBJS-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi-viewport.o > + > +COBJS := $(COBJS-y) > +SRCS := $(COBJS:.o=.c) > +OBJS := $(addprefix $(obj),$(COBJS)) > + > +all: $(LIB) > + > +$(LIB): $(obj).depend $(OBJS) > + $(call cmd_link_o_target, $(OBJS)) > + > +######################################################################### > + > +# defines $(obj).depend target > +include $(SRCTREE)/rules.mk > + > +sinclude $(obj).depend > + > +######################################################################### > diff --git a/drivers/usb/ulpi/ulpi-viewport.c b/drivers/usb/ulpi/ulpi-viewport.c > new file mode 100644 > index 0000000..9a1f59f > --- /dev/null > +++ b/drivers/usb/ulpi/ulpi-viewport.c > @@ -0,0 +1,88 @@ > +/* > + * Copyright (C) 2011 Jana Rapava > + * Based on: > + * linux/drivers/usb/otg/ulpi_viewport.c > + * > + * Original Copyright follow: > + * Copyright (C) 2011 Google, Inc. > + * > + * This software is licensed under the terms of the GNU General Public > + * License version 2, as published by the Free Software Foundation, and > + * may be copied, distributed, and modified under those terms. > + * > + * 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. > + * > + */ > + > +#include > +#include > +#include > + > +/* ULPI viewport control bits */ > +#define ULPI_WU (1 << 31) > +#define ULPI_SS (1 << 27) > +#define ULPI_RWRUN (1 << 30) > +#define ULPI_RWCTRL (1 << 29) > + > +#define ULPI_ADDR_SHIFT 16 > +#define ulpi_write_mask(value) ((value) & 0xff) > +#define ulpi_read_mask(value) (((value) >> 8) & 0xff) > + > +static int ulpi_wait(u32 ulpi_viewport, u32 ulpi_value, u32 ulpi_mask) > +{ > + int timeout = CONFIG_USB_ULPI_TIMEOUT; > + u32 tmp; > + > + writel(ulpi_value, ulpi_viewport); > + > + /* Wait for the bits in ulpi_mask to become zero. */ > + while (--timeout) { > + tmp = readl(ulpi_viewport); > + if (!(tmp & ulpi_mask)) > + break; > + udelay(1); > + } > + > + return !timeout; > +} > + > +static int ulpi_wakeup(u32 ulpi_viewport) > +{ > + if (readl(ulpi_viewport) & ULPI_SS) > + return 0; /* already awake */ > + > + return ulpi_wait(ulpi_viewport, ULPI_WU, ULPI_WU); > +} > + > +void ulpi_write(u32 ulpi_viewport, u32 reg, u32 value) Can this function also return an error value in case it fails (times out)? This way the error can propagate to the user code. > +{ > + u32 tmp; > + if (ulpi_wakeup(ulpi_viewport)) { > + printf("ULPI wakeup timed out\n"); > + return; > + } > + > + tmp = ulpi_wait(ulpi_viewport, ULPI_RWRUN | ULPI_RWCTRL | > + reg << ULPI_ADDR_SHIFT | ulpi_write_mask(value), ULPI_RWRUN); > + if (tmp) > + printf("ULPI write timed out\n"); > +} > + > +u32 ulpi_read(u32 ulpi_viewport, u32 reg) > +{ > + if (ulpi_wakeup(ulpi_viewport)) { > + printf("ULPI wakeup timed out\n"); > + return ULPI_ERROR; > + } > + > + if (ulpi_wait(ulpi_viewport, ULPI_RWRUN | reg << ULPI_ADDR_SHIFT, > + ULPI_RWRUN)) { > + printf("ULPI read timed out\n"); > + return ULPI_ERROR; > + } > + > + return ulpi_read_mask(readl(ulpi_viewport)); > +} > diff --git a/drivers/usb/ulpi/ulpi.c b/drivers/usb/ulpi/ulpi.c > new file mode 100644 > index 0000000..2d66e86 > --- /dev/null > +++ b/drivers/usb/ulpi/ulpi.c > @@ -0,0 +1,199 @@ > +/* > + * Copyright (C) 2011 Jana Rapava > + * Based on: > + * linux/drivers/usb/otg/ulpi.c > + * Generic ULPI USB transceiver support > + * > + * Original Copyright follow: > + * Copyright (C) 2009 Daniel Mack > + * > + * Based on sources from > + * > + * Sascha Hauer > + * Freescale Semiconductors > + * > + * 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. > + */ > + > +#include > +#include > +#include > + > +static struct ulpi_regs *ulpi = (struct ulpi_regs *)0; > + > +static void ulpi_integrity_check(u32 ulpi_viewport) > +{ > + u32 tmp = 0; > + int i; > + for (i = 0; i < 2; i++) { > + ulpi_write(ulpi_viewport, (u32)&ulpi->scratch, > + ULPI_TEST_VALUE << i); > + tmp = ulpi_read(ulpi_viewport, (u32)&ulpi->scratch); > + > + if (tmp != (ULPI_TEST_VALUE << i)) { > + printf("ULPI integrity check failed\n"); > + return; I would expect this function to return a value, so it can be propagated to the code using it. > + } > + } > +} > + > +/* > + * This function is used to select transceiver speed. > + * Accepted parameter values are: > + * ULPI_FC_HIGH_SPEED, ULPI_FC_FULL_SPEED, ULPI_FC_LOW_SPEED, ULPI_FC_FS4LS > + * (FS transceiver for LS packets). > + * Default value is ULPI_FC_FULL_SPEED. > + */ > +void ulpi_select_transceiver(u32 ulpi_viewport, int speed) same here... let the error propagate. Please, fix it globally. > +{ > + switch (speed) { > + case ULPI_FC_HIGH_SPEED: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_HIGH_SPEED); > + break; > + case ULPI_FC_FULL_SPEED: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_FULL_SPEED); > + break; > + case ULPI_FC_LOW_SPEED: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_LOW_SPEED); > + break; > + case ULPI_FC_FS4LS: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_FS4LS); each of the above ulpi_write() calls can fail... Please, fix globally. > + break; > + default: > + printf("ulpi_select_transceiver: unknown transceiver speed\n"); > + } > +} > + > +/* > + * Signals that 5V is driven to VBUS. > + * Ext_power_supply is 1, if we use external supply instead of > + * internal charge pump(which is default). > + * Use_ext_indicator is 1, if we use external VBUS over-current indicator. > + */ > +void ulpi_drive_vbus(u32 ulpi_viewport, > + int ext_power_supply, int use_ext_indicator) > +{ > + ulpi_write(ulpi_viewport, (u32)&ulpi->otg_ctrl_set, ULPI_OTG_DRVVBUS); > + > + if (ext_power_supply) > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->otg_ctrl_set, ULPI_OTG_DRVVBUS_EXT); > + > + if (use_ext_indicator) > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->otg_ctrl_set, ULPI_OTG_EXTVBUSIND); > +} > + > +/* > + * If enable is 0, pull-down resistor not connected to D+, else pull-down > + * resistor connected to D+. > + * Default behaviour is as for enable equal to 1. > + */ > +void ulpi_dp_pulldown(u32 ulpi_viewport, int enable) > +{ > + if (enable) > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->otg_ctrl_set, ULPI_OTG_DP_PULLDOWN); > + else > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->otg_ctrl_clear, ULPI_OTG_DP_PULLDOWN); > +} > + > +/* > + * If enable is 0, pull-down resistor not connected to D- else pull-down > + * resistor connected to D-. > + * Default behaviour is as for enable equal to 1. > + */ > +void ulpi_dm_pulldown(u32 ulpi_viewport, int enable) > +{ > + if (enable) > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->otg_ctrl_set, ULPI_OTG_DM_PULLDOWN); > + else > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->otg_ctrl_clear, ULPI_OTG_DM_PULLDOWN); > +} Correct me if I'm wrong, but I don't think there is a use for the above functions in separate and the user will have to call them both. So, can these two functions be united in one, say ulpi_pulldown(u32 ..., int enable)? > + > +/* > + * This function is used to select bit encoding style. > + * Accepted parameter values are: > + * ULPI_FC_OPMODE_NORMAL, ULPI_FC_OPMODE_NONDRIVING, > + * ULPI_FC_OPMODE_DISABLE_NRZI, ULPI_FC_OPMODE_NOSYNC_NOEOP. > + * Default value is ULPI_FC_OPMODE_NORMAL. > + */ > +void ulpi_select_opmode(u32 ulpi_viewport, int style) > +{ > + switch (style) { > + case ULPI_FC_OPMODE_NORMAL: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_OPMODE_NORMAL); > + break; > + case ULPI_FC_OPMODE_NONDRIVING: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_OPMODE_NONDRIVING); > + break; > + case ULPI_FC_OPMODE_DISABLE_NRZI: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_OPMODE_DISABLE_NRZI); > + break; > + case ULPI_FC_OPMODE_NOSYNC_NOEOP: > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, > + ULPI_FC_OPMODE_NOSYNC_NOEOP); > + break; > + default: > + printf("ulpi_select_opmode: unknown bit encoding style\n"); > + } > +} > + > +/* Put PHY into low power mode. */ > +void ulpi_suspend(u32 ulpi_viewport) > +{ > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->function_ctrl_clear, ULPI_FC_SUSPENDM); > +} > + > +/* Put PHY out of low power mode. */ > +void ulpi_resume(u32 ulpi_viewport) > +{ > + ulpi_write(ulpi_viewport, > + (u32)&ulpi->function_ctrl_set, ULPI_FC_SUSPENDM); > +} > + > +/* Reset transceiver, does not reset ULPI interface or ULPI register set. */ > +void ulpi_reset(u32 ulpi_viewport) > +{ > + ulpi_write(ulpi_viewport, (u32)&ulpi->function_ctrl_set, ULPI_FC_RESET); > +} In two functions above, don't you need to wait for the operation to complete? > + > +/* Charge VBUS through a resistor */ > +void ulpi_charge_vbus(u32 ulpi_viewport) > +{ > + ulpi_write(ulpi_viewport, (u32)&ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS); > +} CHRGVBUS bit is used for SRP, and the above function does not implement SRP by the spec. so it is wrong. Also, I don't think we need SRP in U-Boot, but may be I'm wrong... Now, I know you need to set this bit to workaround the efika bug... But it does not belong to the generic driver! What I suggest is, remove this function from here, and use ulpi_write() directly, in places where you need to workaround that bug. > + > +void ulpi_init(u32 ulpi_viewport) same here, how does the user code know, if init has succeeded? > +{ > + u32 tmp = 0; > + int reg; > + > + /* Assemble ID from four ULPI ID registers (8 bits each). */ > + for (reg = ULPI_ID_REGS_COUNT - 1; reg >= 0; reg--) > + tmp |= ulpi_read(ulpi_viewport, reg) << (reg * 8); > + > + /* Split ID into vendor and product ID. */ > + debug("Found ULPI transceiver ID %04x:%04x\n", tmp >> 16, tmp & 0xffff); > + > + ulpi_integrity_check(ulpi_viewport); > +} > diff --git a/include/usb/ulpi.h b/include/usb/ulpi.h > new file mode 100644 > index 0000000..834b5e8 > --- /dev/null > +++ b/include/usb/ulpi.h > @@ -0,0 +1,222 @@ > +/* > + * Copyright (C) 2011 Jana Rapava > + * Based on: > + * linux/include/linux/usb/ulpi.h > + * ULPI defines and function prototypes > + * > + * Original Copyrights follow: > + * Copyright (C) 2010 Nokia Corporation > + * > + * This software is distributed under the terms of the GNU General > + * Public License ("GPL") as published by the Free Software Foundation, > + * version 2 of that License. > + */ > + > +#ifndef __USB_ULPI_H > +#define __USB_ULPI_H > + > +#define ULPI_ID_REGS_COUNT 4 > +#define ULPI_TEST_VALUE 0x55 > +/* value greater than 0xff indicates failure */ > +#define ULPI_ERROR (1 << 8) > + > +/* ULPI viewport control bits */ > +#define ULPI_WU (1 << 31) > +#define ULPI_SS (1 << 27) > +#define ULPI_RWRUN (1 << 30) > +#define ULPI_RWCTRL (1 << 29) > + > +/* ULPI access modes */ > +#define ULPI_WRITE 0x00 > +#define ULPI_SET 0x01 > +#define ULPI_CLEAR 0x02 > + > +struct ulpi_regs { > + /* Vendor ID and Product ID: 0x00 - 0x03 Read-only */ > + u8 vendor_id_low; > + u8 vendor_id_high; > + u8 product_id_low; > + u8 product_id_high; > + /* Function Control: 0x04 - 0x06 Read */ > + u8 function_ctrl; /* 0x04 Write */ > + u8 function_ctrl_set; /* 0x05 Set */ > + u8 function_ctrl_clear; /* 0x06 Clear */ > + /* Interface Control: 0x07 - 0x09 Read */ > + u8 iface_ctrl; /* 0x07 Write */ > + u8 iface_ctrl_set; /* 0x08 Set */ > + u8 iface_ctrl_clear; /* 0x09 Clear */ > + /* OTG Control: 0x0A - 0x0C Read */ > + u8 otg_ctrl; /* 0x0A Write */ > + u8 otg_ctrl_set; /* 0x0B Set */ > + u8 otg_ctrl_clear; /* 0x0C Clear */ > + /* USB Interrupt Enable Rising: 0x0D - 0x0F Read */ > + u8 usb_ie_rising; /* 0x0D Write */ > + u8 usb_ie_rising_set; /* 0x0E Set */ > + u8 usb_ie_rising_clear; /* 0x0F Clear */ > + /* USB Interrupt Enable Falling: 0x10 - 0x12 Read */ > + u8 usb_ie_falling; /* 0x10 Write */ > + u8 usb_ie_falling_set; /* 0x11 Set */ > + u8 usb_ie_falling_clear; /* 0x12 Clear */ > + /* USB Interrupt Status: 0x13 Read-only */ > + u8 usb_int_status; > + /* USB Interrupt Latch: 0x14 Read-only with auto-clear */ > + u8 usb_int_latch; > + /* Debug: 0x15 Read-only */ > + u8 debug; > + /* Scratch Register: 0x16 - 0x18 Read */ > + u8 scratch; /* 0x16 Write */ > + u8 scratch_set; /* 0x17 Set */ > + u8 scratch_clear; /* 0x18 Clear */ > + /* > + * Optional Carkit registers > + */ > + /* Carkit Control: 0x19 - 0x1B Read */ > + u8 carkit_ctrl; /* 0x19 Write */ > + u8 carkit_ctrl_set; /* 0x1A Set */ > + u8 carkit_ctrl_clear; /* 0x1B Clear */ > + /* Carkit Interrupt Delay: 0x1C Read, Write */ > + u8 carkit_int_delay; > + /* Carkit Interrupt Enable: 0x1D - 0x1F Read */ > + u8 carkit_ie; /* 0x1D Write */ > + u8 carkit_ie_set; /* 0x1E Set */ > + u8 carkit_ie_clear; /* 0x1F Clear */ > + /* Carkit Interrupt Status: 0x20 Read-only */ > + u8 carkit_int_status; > + /* Carkit Interrupt Latch: 0x21 Read-only with auto-clear */ > + u8 carkit_int_latch; > + /* Carkit Pulse Control: 0x22 - 0x24 Read */ > + u8 carkit_pulse_ctrl; /* 0x22 Write */ > + u8 carkit_pulse_ctrl_set; /* 0x23 Set */ > + u8 carkit_pulse_ctrl_clear; /* 0x24 Clear */ > + /* > + * Other optional registers > + */ > + /* Transmit Positive Width: 0x25 Read, Write */ > + u8 transmit_pos_width; > + /* Transmit Negative Width: 0x26 Read, Write */ > + u8 transmit_neg_width; > + /* Receive Polarity Recovery: 0x27 Read, Write */ > + u8 recv_pol_recovery; > + /* > + * Addresses 0x28 - 0x2E are reserved, so we use offsets > + * for immediate registers with higher addresses > + */ > +}; > + > +/* Access Extended Register Set (indicator) */ > +#define ACCESS_EXT_REGS_OFFSET 0x2f /* read-write */ > +/* Vendor-specific */ > +#define VENDOR_SPEC_OFFSET 0x30 > + > +/* > + * Extended Register Set > + * > + * Addresses 0x00-0x3F map directly to Immediate Register Set. > + * Addresses 0x40-0x7F are reserved. > + * Addresses 0x80-0xff are vendor-specific. > + */ > +#define EXT_VENDOR_SPEC_OFFSET 0x80 > + > +/* > + * Register Bits > + */ > + > +/* Function Control */ > +#define ULPI_FC_XCVRSEL (1 << 0) > +#define ULPI_FC_XCVRSEL_MASK (3 << 0) > +#define ULPI_FC_HIGH_SPEED (0 << 0) > +#define ULPI_FC_FULL_SPEED (1 << 0) > +#define ULPI_FC_LOW_SPEED (2 << 0) > +#define ULPI_FC_FS4LS (3 << 0) > +#define ULPI_FC_TERMSELECT (1 << 2) > +#define ULPI_FC_OPMODE (1 << 3) > +#define ULPI_FC_OPMODE_MASK (3 << 3) > +#define ULPI_FC_OPMODE_NORMAL (0 << 3) > +#define ULPI_FC_OPMODE_NONDRIVING (1 << 3) > +#define ULPI_FC_OPMODE_DISABLE_NRZI (2 << 3) > +#define ULPI_FC_OPMODE_NOSYNC_NOEOP (3 << 3) > +#define ULPI_FC_RESET (1 << 5) > +#define ULPI_FC_SUSPENDM (1 << 6) > + > +/* Interface Control */ > +#define ULPI_IFACE_6_PIN_SERIAL_MODE (1 << 0) > +#define ULPI_IFACE_3_PIN_SERIAL_MODE (1 << 1) > +#define ULPI_IFACE_CARKITMODE (1 << 2) > +#define ULPI_IFACE_CLOCKSUSPENDM (1 << 3) > +#define ULPI_IFACE_AUTORESUME (1 << 4) > +#define ULPI_IFACE_EXTVBUS_COMPLEMENT (1 << 5) > +#define ULPI_IFACE_PASSTHRU (1 << 6) > +#define ULPI_IFACE_PROTECT_IFC_DISABLE (1 << 7) > + > +/* OTG Control */ > +#define ULPI_OTG_ID_PULLUP (1 << 0) > +#define ULPI_OTG_DP_PULLDOWN (1 << 1) > +#define ULPI_OTG_DM_PULLDOWN (1 << 2) > +#define ULPI_OTG_DISCHRGVBUS (1 << 3) > +#define ULPI_OTG_CHRGVBUS (1 << 4) > +#define ULPI_OTG_DRVVBUS (1 << 5) > +#define ULPI_OTG_DRVVBUS_EXT (1 << 6) > +#define ULPI_OTG_EXTVBUSIND (1 << 7) > + > +/* > + * USB Interrupt Enable Rising, > + * USB Interrupt Enable Falling, > + * USB Interrupt Status and > + * USB Interrupt Latch > + */ > +#define ULPI_INT_HOST_DISCONNECT (1 << 0) > +#define ULPI_INT_VBUS_VALID (1 << 1) > +#define ULPI_INT_SESS_VALID (1 << 2) > +#define ULPI_INT_SESS_END (1 << 3) > +#define ULPI_INT_IDGRD (1 << 4) > + > +/* Debug */ > +#define ULPI_DEBUG_LINESTATE0 (1 << 0) > +#define ULPI_DEBUG_LINESTATE1 (1 << 1) > + > +/* Carkit Control */ > +#define ULPI_CARKIT_CTRL_CARKITPWR (1 << 0) > +#define ULPI_CARKIT_CTRL_IDGNDDRV (1 << 1) > +#define ULPI_CARKIT_CTRL_TXDEN (1 << 2) > +#define ULPI_CARKIT_CTRL_RXDEN (1 << 3) > +#define ULPI_CARKIT_CTRL_SPKLEFTEN (1 << 4) > +#define ULPI_CARKIT_CTRL_SPKRIGHTEN (1 << 5) > +#define ULPI_CARKIT_CTRL_MICEN (1 << 6) > + > +/* Carkit Interrupt Enable */ > +#define ULPI_CARKIT_INT_EN_IDFLOAT_RISE (1 << 0) > +#define ULPI_CARKIT_INT_EN_IDFLOAT_FALL (1 << 1) > +#define ULPI_CARKIT_INT_EN_CARINTDET (1 << 2) > +#define ULPI_CARKIT_INT_EN_DP_RISE (1 << 3) > +#define ULPI_CARKIT_INT_EN_DP_FALL (1 << 4) > + > +/* > + * Carkit Interrupt Status and > + * Carkit Interrupt Latch > + */ > +#define ULPI_CARKIT_INT_IDFLOAT (1 << 0) > +#define ULPI_CARKIT_INT_CARINTDET (1 << 1) > +#define ULPI_CARKIT_INT_DP (1 << 2) > + > +/* Carkit Pulse Control*/ > +#define ULPI_CARKIT_PLS_CTRL_TXPLSEN (1 << 0) > +#define ULPI_CARKIT_PLS_CTRL_RXPLSEN (1 << 1) > +#define ULPI_CARKIT_PLS_CTRL_SPKRLEFT_BIASEN (1 << 2) > +#define ULPI_CARKIT_PLS_CTRL_SPKRRIGHT_BIASEN (1 << 3) > + > +void ulpi_write(u32 ulpi_viewport, u32 reg, u32 value); > +u32 ulpi_read(u32 ulpi_viewport, u32 reg); > + > +void ulpi_init(u32 ulpi_viewport); > + > +void ulpi_select_transceiver(u32 ulpi_viewport, int speed); > +void ulpi_drive_vbus(u32 ulpi_viewport, > + int ext_power_supply, int use_ext_indicator); > +void ulpi_dp_pulldown(u32 ulpi_viewport, int enable); > +void ulpi_dm_pulldown(u32 ulpi_viewport, int enable); > +void ulpi_select_opmode(u32 ulpi_viewport, int style); > +void ulpi_suspend(u32 ulpi_viewport); > +void ulpi_resume(u32 ulpi_viewport); > +void ulpi_reset(u32 ulpi_viewport); > +void ulpi_charge_vbus(u32 ulpi_viewport); > +#endif /* __USB_ULPI_H */ Overall, the API is useful, the patch looks good and almost ready for submission. Please, make those final changes and we're done. Thanks for doing this. -- Regards, Igor.