diff options
Diffstat (limited to 'driver/usb_mux/tusb1064.c')
| -rw-r--r-- | driver/usb_mux/tusb1064.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/driver/usb_mux/tusb1064.c b/driver/usb_mux/tusb1064.c deleted file mode 100644 index 1c0f0e4701..0000000000 --- a/driver/usb_mux/tusb1064.c +++ /dev/null @@ -1,116 +0,0 @@ -/* Copyright 2021 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "i2c.h" -#include "tusb1064.h" -#include "usb_mux.h" - -#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args) - -/* - * configuration bits which never change in the General Register - * e.g. REG_GENERAL_DP_EN_CTRL or REG_GENERAL_EQ_OVERRIDE - */ -#define REG_GENERAL_STATIC_BITS REG_GENERAL_EQ_OVERRIDE - -static int tusb1064_read(const struct usb_mux *me, uint8_t reg, uint8_t *val) -{ - int buffer = 0xee; - int res = i2c_read8(me->i2c_port, me->i2c_addr_flags, - (int)reg, &buffer); - *val = buffer; - return res; -} - -static int tusb1064_write(const struct usb_mux *me, uint8_t reg, uint8_t val) -{ - return i2c_write8(me->i2c_port, me->i2c_addr_flags, - (int)reg, (int)val); -} - -/* Writes control register to set switch mode */ -static int tusb1064_set_mux(const struct usb_mux *me, mux_state_t mux_state, - bool *ack_required) -{ - int reg = REG_GENERAL_STATIC_BITS; - - /* This driver does not use host command ACKs */ - *ack_required = false; - - if (mux_state & USB_PD_MUX_USB_ENABLED) - reg |= REG_GENERAL_CTLSEL_USB3; - if (mux_state & USB_PD_MUX_DP_ENABLED) - reg |= REG_GENERAL_CTLSEL_ANYDP; - if (mux_state & USB_PD_MUX_POLARITY_INVERTED) - reg |= REG_GENERAL_FLIPSEL; - - return tusb1064_write(me, TUSB1064_REG_GENERAL, reg); -} - -/* Reads control register and updates mux_state accordingly */ -static int tusb1064_get_mux(const struct usb_mux *me, mux_state_t *mux_state) -{ - uint8_t reg; - int res; - - res = tusb1064_read(me, TUSB1064_REG_GENERAL, ®); - if (res) - return EC_ERROR_INVAL; - - *mux_state = 0; - if (reg & REG_GENERAL_CTLSEL_USB3) - *mux_state |= USB_PD_MUX_USB_ENABLED; - if (reg & REG_GENERAL_CTLSEL_ANYDP) - *mux_state |= USB_PD_MUX_DP_ENABLED; - if (reg & REG_GENERAL_FLIPSEL) - *mux_state |= USB_PD_MUX_POLARITY_INVERTED; - - return EC_SUCCESS; -} - -/* Generic driver init function */ -static int tusb1064_init(const struct usb_mux *me) -{ - int res; - uint8_t reg; - bool unused; - - /* Default to "Floating Pin" DP Equalization */ - reg = TUSB1064_DP1EQ(TUSB1064_DP_EQ_RX_10_0_DB) | - TUSB1064_DP3EQ(TUSB1064_DP_EQ_RX_10_0_DB); - res = tusb1064_write(me, TUSB1064_REG_DP1DP3EQ_SEL, reg); - if (res) - return res; - - reg = TUSB1064_DP0EQ(TUSB1064_DP_EQ_RX_10_0_DB) | - TUSB1064_DP2EQ(TUSB1064_DP_EQ_RX_10_0_DB); - res = tusb1064_write(me, TUSB1064_REG_DP0DP2EQ_SEL, reg); - if (res) - return res; - - /* - * Note that bypassing the usb_mux API is okay for internal driver calls - * since the task calling init already holds this port's mux lock. - */ - /* Disconnect USB3.1 and DP */ - res = tusb1064_set_mux(me, USB_PD_MUX_NONE, &unused); - if (res) - return res; - - /* Disable AUX mux override */ - res = tusb1064_write(me, TUSB1064_REG_AUXDPCTRL, 0); - if (res) - return res; - - return EC_SUCCESS; -} - -const struct usb_mux_driver tusb1064_usb_mux_driver = { - /* CAUTION: This is an UFP/RX/SINK redriver mux */ - .init = tusb1064_init, - .set = tusb1064_set_mux, - .get = tusb1064_get_mux, -}; |