The twl4030 provides a PHY device for connecting a link device, like musb, to physical connection.
This change adds the twl4030 usb registers and functions for initializing the PHY as required by omap3.
Signed-off-by: Tom Rix Tom.Rix@windriver.com --- Makefile | 1 + drivers/usb/phy/Makefile | 44 +++++++++++ drivers/usb/phy/twl4030.c | 189 +++++++++++++++++++++++++++++++++++++++++++++ include/twl4030.h | 143 ++++++++++++++++++++++++++++++---- 4 files changed, 362 insertions(+), 15 deletions(-) create mode 100644 drivers/usb/phy/Makefile create mode 100644 drivers/usb/phy/twl4030.c
diff --git a/Makefile b/Makefile index a69e6d5..ce2c7e0 100644 --- a/Makefile +++ b/Makefile @@ -243,6 +243,7 @@ LIBS += drivers/twserial/libtws.a LIBS += drivers/usb/gadget/libusb_gadget.a LIBS += drivers/usb/host/libusb_host.a LIBS += drivers/usb/musb/libusb_musb.a +LIBS += drivers/usb/phy/libusb_phy.a LIBS += drivers/video/libvideo.a LIBS += drivers/watchdog/libwatchdog.a LIBS += common/libcommon.a diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile new file mode 100644 index 0000000..200b907 --- /dev/null +++ b/drivers/usb/phy/Makefile @@ -0,0 +1,44 @@ +# +# Copyright (c) 2009 Wind River Systems, Inc. +# Tom Rix Tom.Rix@windriver.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., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB := $(obj)libusb_phy.a + +COBJS-$(CONFIG_TWL4030_USB) += twl4030.o +COBJS-y := twl4030.o + +COBJS := $(COBJS-y) +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +all: $(LIB) + +$(LIB): $(obj).depend $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/drivers/usb/phy/twl4030.c b/drivers/usb/phy/twl4030.c new file mode 100644 index 0000000..54d2e61 --- /dev/null +++ b/drivers/usb/phy/twl4030.c @@ -0,0 +1,189 @@ +/* + * Copyright (c) 2009 Wind River Systems, Inc. + * Tom Rix Tom.Rix@windriver.com + * + * This is file is based on + * repository git.gitorious.org/u-boot-omap3/mainline.git, + * branch omap3-dev-usb, file drivers/usb/gadget/twl4030_usb.c + * + * This is the unique part of its copyright : + * + * ------------------------------------------------------------------------ + * + * * (C) Copyright 2009 Atin Malaviya (atin.malaviya@gmail.com) + * + * Based on: twl4030_usb.c in linux 2.6 (drivers/i2c/chips/twl4030_usb.c) + * Copyright (C) 2004-2007 Texas Instruments + * Copyright (C) 2008 Nokia Corporation + * Contact: Felipe Balbi felipe.balbi@nokia.com + * + * Author: Atin Malaviya (atin.malaviya@gmail.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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <twl4030.h> + +/* Defines for bits in registers */ +#define OPMODE_MASK (3 << 3) +#define XCVRSELECT_MASK (3 << 0) +#define CARKITMODE (1 << 2) +#define OTG_ENAB (1 << 5) +#define PHYPWD (1 << 0) +#define CLOCKGATING_EN (1 << 2) +#define CLK32K_EN (1 << 1) +#define REQ_PHY_DPLL_CLK (1 << 0) +#define PHY_DPLL_CLK (1 << 0) + +static int twl4030_usb_write(u8 address, u8 data) +{ + int ret; + + ret = twl4030_i2c_write_u8(TWL4030_CHIP_USB, data, address); + if (ret != 0) + printf("TWL4030:USB:Write[0x%x] Error %d\n", address, ret); + + return ret; +} + +static int twl4030_usb_read(u8 address) +{ + u8 data; + int ret; + + ret = twl4030_i2c_read_u8(TWL4030_CHIP_USB, &data, address); + if (ret == 0) + ret = data; + else + printf("TWL4030:USB:Read[0x%x] Error %d\n", address, ret); + + return ret; +} + +static void twl4030_usb_ldo_init(void) +{ + /* Enable writing to power configuration registers */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0xC0, + TWL4030_PM_MASTER_PROTECT_KEY); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x0C, + TWL4030_PM_MASTER_PROTECT_KEY); + + /* put VUSB3V1 LDO in active state */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00, + TWL4030_PM_RECEIVER_VUSB_DEDICATED2); + + /* input to VUSB3V1 LDO is from VBAT, not VBUS */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x14, + TWL4030_PM_RECEIVER_VUSB_DEDICATED1); + + /* turn on 3.1V regulator */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20, + TWL4030_PM_RECEIVER_VUSB3V1_DEV_GRP); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00, + TWL4030_PM_RECEIVER_VUSB3V1_TYPE); + + /* turn on 1.5V regulator */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20, + TWL4030_PM_RECEIVER_VUSB1V5_DEV_GRP); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00, + TWL4030_PM_RECEIVER_VUSB1V5_TYPE); + + /* turn on 1.8V regulator */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20, + TWL4030_PM_RECEIVER_VUSB1V8_DEV_GRP); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00, + TWL4030_PM_RECEIVER_VUSB1V8_TYPE); + + /* disable access to power configuration registers */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x00, + TWL4030_PM_MASTER_PROTECT_KEY); +} + +static void twl4030_phy_power(void) +{ + u8 pwr, clk; + + /* Power the PHY */ + pwr = twl4030_usb_read(TWL4030_USB_PHY_PWR_CTRL); + pwr &= ~PHYPWD; + twl4030_usb_write(TWL4030_USB_PHY_PWR_CTRL, pwr); + /* Enable clocks */ + clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL); + clk |= CLOCKGATING_EN | CLK32K_EN; + twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk); +} + +/* + * Initiaze the ULPI interface + * ULPI : Universal Transceiver Macrocell Low Pin Interface + * An interface between the USB link controller like musb and the + * the PHY or transceiver that drives the actual bus. + */ +int twl4030_usb_ulpi_init(void) +{ + long timeout = 1000 * 1000; /* 1 sec */; + u8 clk, sts, pwr; + + /* twl4030 ldo init */ + twl4030_usb_ldo_init(); + + /* Enable the twl4030 phy */ + twl4030_phy_power(); + + /* Enable DPLL to access PHY registers over I2C */ + clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL); + clk |= REQ_PHY_DPLL_CLK; + twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk); + + /* Check if the PHY DPLL is locked */ + sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS); + while (!(sts & PHY_DPLL_CLK) && 0 < timeout) { + udelay(10); + sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS); + timeout -= 10; + } + + /* Final check */ + sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS); + if (!(sts & PHY_DPLL_CLK)) { + printf("Error:TWL4030:USB Timeout setting PHY DPLL clock\n"); + return -1; + } + + /* + * There are two circuit blocks attached to the PHY, + * Carkit and USB OTG. Disable Carkit and enable USB OTG + */ + twl4030_usb_write(TWL4030_USB_IFC_CTRL_CLR, CARKITMODE); + pwr = twl4030_usb_read(TWL4030_USB_POWER_CTRL); + pwr |= OTG_ENAB; + twl4030_usb_write(TWL4030_USB_POWER_CTRL_SET, pwr); + + /* Clear the opmode bits to ensure normal encode */ + twl4030_usb_write(TWL4030_USB_FUNC_CTRL_CLR, OPMODE_MASK); + + /* Clear the xcvrselect bits to enable the high speed transeiver */ + twl4030_usb_write(TWL4030_USB_FUNC_CTRL_CLR, XCVRSELECT_MASK); + + /* Let ULPI control the DPLL clock */ + clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL); + clk &= ~REQ_PHY_DPLL_CLK; + twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk); + + return 0; +} diff --git a/include/twl4030.h b/include/twl4030.h index f260ecb..feaec47 100644 --- a/include/twl4030.h +++ b/include/twl4030.h @@ -342,21 +342,129 @@ #define TWL4030_KEYPAD_CTRL_SOFT_NRST (1 << 0)
/* USB */ -#define TWL4030_USB_FUNC_CTRL (0x04) -#define TWL4030_USB_OPMODE_MASK (3 << 3) -#define TWL4030_USB_XCVRSELECT_MASK (3 << 0) -#define TWL4030_USB_IFC_CTRL (0x07) -#define TWL4030_USB_CARKITMODE (1 << 2) -#define TWL4030_USB_POWER_CTRL (0xAC) -#define TWL4030_USB_OTG_ENAB (1 << 5) -#define TWL4030_USB_PHY_PWR_CTRL (0xFD) -#define TWL4030_USB_PHYPWD (1 << 0) -#define TWL4030_USB_PHY_CLK_CTRL (0xFE) -#define TWL4030_USB_CLOCKGATING_EN (1 << 2) -#define TWL4030_USB_CLK32K_EN (1 << 1) -#define TWL4030_USB_REQ_PHY_DPLL_CLK (1 << 0) -#define TWL4030_USB_PHY_CLK_CTRL_STS (0xFF) -#define TWL4030_USB_PHY_DPLL_CLK (1 << 0) +#define TWL4030_USB_VENDOR_ID_LO 0x00 +#define TWL4030_USB_VENDOR_ID_HI 0x01 +#define TWL4030_USB_PRODUCT_ID_LO 0x02 +#define TWL4030_USB_PRODUCT_ID_HI 0x03 +#define TWL4030_USB_FUNC_CTRL 0x04 +#define TWL4030_USB_FUNC_CTRL_SET 0x05 +#define TWL4030_USB_FUNC_CTRL_CLR 0x06 +#define TWL4030_USB_IFC_CTRL 0x07 +#define TWL4030_USB_IFC_CTRL_SET 0x08 +#define TWL4030_USB_IFC_CTRL_CLR 0x09 +#define TWL4030_USB_OTG_CTRL 0x0A +#define TWL4030_USB_OTG_CTRL_SET 0x0B +#define TWL4030_USB_OTG_CTRL_CLR 0x0C +#define TWL4030_USB_USB_INT_EN_RISE 0x0D +#define TWL4030_USB_USB_INT_EN_RISE_SET 0x0E +#define TWL4030_USB_USB_INT_EN_RISE_CLR 0x0F +#define TWL4030_USB_USB_INT_EN_FALL 0x10 +#define TWL4030_USB_USB_INT_EN_FALL_SET 0x11 +#define TWL4030_USB_USB_INT_EN_FALL_CLR 0x12 +#define TWL4030_USB_USB_INT_STS 0x13 +#define TWL4030_USB_USB_INT_LATCH 0x14 +#define TWL4030_USB_DEBUG 0x15 +#define TWL4030_USB_SCRATCH_REG 0x16 +#define TWL4030_USB_SCRATCH_REG_SET 0x17 +#define TWL4030_USB_SCRATCH_REG_CLR 0x18 +#define TWL4030_USB_CARKIT_CTRL 0x19 +#define TWL4030_USB_CARKIT_CTRL_SET 0x1A +#define TWL4030_USB_CARKIT_CTRL_CLR 0x1B +#define TWL4030_USB_CARKIT_INT_DELAY 0x1C +#define TWL4030_USB_CARKIT_INT_EN 0x1D +#define TWL4030_USB_CARKIT_INT_EN_SET 0x1E +#define TWL4030_USB_CARKIT_INT_EN_CLR 0x1F +#define TWL4030_USB_CARKIT_INT_STS 0x20 +#define TWL4030_USB_CARKIT_INT_LATCH 0x21 +#define TWL4030_USB_CARKIT_PLS_CTRL 0x22 +#define TWL4030_USB_CARKIT_PLS_CTRL_SET 0x23 +#define TWL4030_USB_CARKIT_PLS_CTRL_CLR 0x24 +#define TWL4030_USB_TRANS_POS_WIDTH 0x25 +#define TWL4030_USB_TRANS_NEG_WIDTH 0x26 +#define TWL4030_USB_RCV_PLTY_RECOVERY 0x27 +#define TWL4030_USB_MCPC_CTRL 0x30 +#define TWL4030_USB_MCPC_CTRL_SET 0x31 +#define TWL4030_USB_MCPC_CTRL_CLR 0x32 +#define TWL4030_USB_MCPC_IO_CTRL 0x33 +#define TWL4030_USB_MCPC_IO_CTRL_SET 0x34 +#define TWL4030_USB_MCPC_IO_CTRL_CLR 0x35 +#define TWL4030_USB_MCPC_CTRL2 0x36 +#define TWL4030_USB_MCPC_CTRL2_SET 0x37 +#define TWL4030_USB_MCPC_CTRL2_CLR 0x38 +#define TWL4030_USB_OTHER_FUNC_CTRL 0x80 +#define TWL4030_USB_OTHER_FUNC_CTRL_SET 0x81 +#define TWL4030_USB_OTHER_FUNC_CTRL_CLR 0x82 +#define TWL4030_USB_OTHER_IFC_CTRL 0x83 +#define TWL4030_USB_OTHER_IFC_CTRL_SET 0x84 +#define TWL4030_USB_OTHER_IFC_CTRL_CLR 0x85 +#define TWL4030_USB_OTHER_INT_EN_RISE_SET 0x87 +#define TWL4030_USB_OTHER_INT_EN_RISE_CLR 0x88 +#define TWL4030_USB_OTHER_INT_EN_FALL 0x89 +#define TWL4030_USB_OTHER_INT_EN_FALL_SET 0x8A +#define TWL4030_USB_OTHER_INT_EN_FALL_CLR 0x8B +#define TWL4030_USB_OTHER_INT_STS 0x8C +#define TWL4030_USB_OTHER_INT_LATCH 0x8D +#define TWL4030_USB_ID_STATUS 0x96 +#define TWL4030_USB_CARKIT_SM_1_INT_EN 0x97 +#define TWL4030_USB_CARKIT_SM_1_INT_EN_SET 0x98 +#define TWL4030_USB_CARKIT_SM_1_INT_EN_CLR 0x99 +#define TWL4030_USB_CARKIT_SM_1_INT_STS 0x9A +#define TWL4030_USB_CARKIT_SM_1_INT_LATCH 0x9B +#define TWL4030_USB_CARKIT_SM_2_INT_EN 0x9C +#define TWL4030_USB_CARKIT_SM_2_INT_EN_SET 0x9D +#define TWL4030_USB_CARKIT_SM_2_INT_EN_CLR 0x9E +#define TWL4030_USB_CARKIT_SM_2_INT_STS 0x9F +#define TWL4030_USB_CARKIT_SM_2_INT_LATCH 0xA0 +#define TWL4030_USB_CARKIT_SM_CTRL 0xA1 +#define TWL4030_USB_CARKIT_SM_CTRL_SET 0xA2 +#define TWL4030_USB_CARKIT_SM_CTRL_CLR 0xA3 +#define TWL4030_USB_CARKIT_SM_CMD 0xA4 +#define TWL4030_USB_CARKIT_SM_CMD_SET 0xA5 +#define TWL4030_USB_CARKIT_SM_CMD_CLR 0xA6 +#define TWL4030_USB_CARKIT_SM_CMD_STS 0xA7 +#define TWL4030_USB_CARKIT_SM_STATUS 0xA8 +#define TWL4030_USB_CARKIT_SM_ERR_STATUS 0xAA +#define TWL4030_USB_CARKIT_SM_CTRL_STATE 0xAB +#define TWL4030_USB_POWER_CTRL 0xAC +#define TWL4030_USB_POWER_CTRL_SET 0xAD +#define TWL4030_USB_POWER_CTRL_CLR 0xAE +#define TWL4030_USB_OTHER_IFC_CTRL2 0xAF +#define TWL4030_USB_OTHER_IFC_CTRL2_SET 0xB0 +#define TWL4030_USB_OTHER_IFC_CTRL2_CLR 0xB1 +#define TWL4030_USB_REG_CTRL_EN 0xB2 +#define TWL4030_USB_REG_CTRL_EN_SET 0xB3 +#define TWL4030_USB_REG_CTRL_EN_CLR 0xB4 +#define TWL4030_USB_REG_CTRL_ERROR 0xB5 +#define TWL4030_USB_OTHER_FUNC_CTRL2 0xB8 +#define TWL4030_USB_OTHER_FUNC_CTRL2_SET 0xB9 +#define TWL4030_USB_OTHER_FUNC_CTRL2_CLR 0xBA +#define TWL4030_USB_CARKIT_ANA_CTRL 0xBB +#define TWL4030_USB_CARKIT_ANA_CTRL_SET 0xBC +#define TWL4030_USB_CARKIT_ANA_CTRL_CLR 0xBD +#define TWL4030_USB_VBUS_DEBOUNCE 0xC0 +#define TWL4030_USB_ID_DEBOUNCE 0xC1 +#define TWL4030_USB_TPH_DP_CON_MIN 0xC2 +#define TWL4030_USB_TPH_DP_CON_MAX 0xC3 +#define TWL4030_USB_TCR_DP_CON_MIN 0xC4 +#define TWL4030_USB_TCR_DP_CON_MAX 0xC5 +#define TWL4030_USB_TPH_DP_PD_SHORT 0xC6 +#define TWL4030_USB_TPH_CMD_DLY 0xC7 +#define TWL4030_USB_TPH_DET_RST 0xC8 +#define TWL4030_USB_TPH_AUD_BIAS 0xC9 +#define TWL4030_USB_TCR_UART_DET_MIN 0xCA +#define TWL4030_USB_TCR_UART_DET_MAX 0xCB +#define TWL4030_USB_TPH_ID_INT_PW 0xCD +#define TWL4030_USB_TACC_ID_INT_WAIT 0xCE +#define TWL4030_USB_TACC_ID_INT_PW 0xCF +#define TWL4030_USB_TPH_CMD_WAIT 0xD0 +#define TWL4030_USB_TPH_ACK_WAIT 0xD1 +#define TWL4030_USB_TPH_DP_DISC_DET 0xD2 +#define TWL4030_USB_VBAT_TIMER 0xD3 +#define TWL4030_USB_CARKIT_4W_DEBUG 0xE0 +#define TWL4030_USB_CARKIT_5W_DEBUG 0xE1 +#define TWL4030_USB_PHY_PWR_CTRL 0xFD +#define TWL4030_USB_PHY_CLK_CTRL 0xFE +#define TWL4030_USB_PHY_CLK_CTRL_STS 0xFF
/* * Convience functions to read and write from TWL4030 @@ -398,4 +506,9 @@ void twl4030_power_mmc_init(void); */ void twl4030_led_init(void);
+/* + * USB + */ +int twl4030_usb_ulpi_init(void); + #endif /* TWL4030_H */