diff options
Diffstat (limited to 'driver/tcpm/anx7688.c')
| -rw-r--r-- | driver/tcpm/anx7688.c | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/driver/tcpm/anx7688.c b/driver/tcpm/anx7688.c deleted file mode 100644 index 5e37352bc5..0000000000 --- a/driver/tcpm/anx7688.c +++ /dev/null @@ -1,225 +0,0 @@ -/* Copyright 2016 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. - */ - -/* ANX7688 port manager */ - -#include "hooks.h" -#include "tcpm/tcpci.h" -#include "tcpm/tcpm.h" -#include "timer.h" -#include "usb_mux.h" - -#if defined(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) || \ - defined(CONFIG_USB_PD_TCPC_LOW_POWER) || \ - defined(CONFIG_USB_PD_DISCHARGE_TCPC) -#error "Unsupported config options of anx7688 PD driver" -#endif - -#define ANX7688_VENDOR_ALERT BIT(15) - -#define ANX7688_REG_STATUS 0x82 -#define ANX7688_REG_STATUS_LINK BIT(0) - -#define ANX7688_REG_HPD 0x83 -#define ANX7688_REG_HPD_HIGH BIT(0) -#define ANX7688_REG_HPD_IRQ BIT(1) -#define ANX7688_REG_HPD_ENABLE BIT(2) - -#define ANX7688_USBC_ADDR_FLAGS 0x28 -#define ANX7688_REG_RAMCTRL 0xe7 -#define ANX7688_REG_RAMCTRL_BOOT_DONE BIT(6) - -static int anx7688_init(int port) -{ - int rv = 0; - int mask = 0; - - /* - * 7688 POWER_STATUS[6] is not reliable for tcpci_tcpm_init() to poll - * due to it is default 0 in HW, and we cannot write TCPC until it is - * ready, or something goes wrong. (Issue 52772) - * Instead we poll TCPC 0x50:0xe7 bit6 here to make sure bootdone is - * ready(50ms). Then PD main flow can process cc debounce in 50ms ~ - * 100ms to follow cts. - */ - while (1) { - rv = i2c_read8(I2C_PORT_TCPC, ANX7688_USBC_ADDR_FLAGS, - ANX7688_REG_RAMCTRL, &mask); - - if (rv == EC_SUCCESS && (mask & ANX7688_REG_RAMCTRL_BOOT_DONE)) - break; - msleep(10); - } - - rv = tcpci_tcpm_drv.init(port); - if (rv) - return rv; - - rv = tcpc_read16(port, TCPC_REG_ALERT_MASK, &mask); - if (rv) - return rv; - - /* enable vendor specific alert */ - mask |= ANX7688_VENDOR_ALERT; - rv = tcpc_write16(port, TCPC_REG_ALERT_MASK, mask); - return rv; -} - -static int anx7688_release(int port) -{ - return EC_ERROR_UNIMPLEMENTED; -} - -static void anx7688_update_hpd_enable(int port) -{ - int status, reg, rv; - - rv = tcpc_read(port, ANX7688_REG_STATUS, &status); - rv |= tcpc_read(port, ANX7688_REG_HPD, ®); - if (rv) - return; - - if (!(reg & ANX7688_REG_HPD_ENABLE) || - !(status & ANX7688_REG_STATUS_LINK)) { - reg &= ~ANX7688_REG_HPD_IRQ; - tcpc_write(port, ANX7688_REG_HPD, - (status & ANX7688_REG_STATUS_LINK) - ? reg | ANX7688_REG_HPD_ENABLE - : reg & ~ANX7688_REG_HPD_ENABLE); - } -} - -int anx7688_hpd_disable(int port) -{ - return tcpc_write(port, ANX7688_REG_HPD, 0); -} - -int anx7688_update_hpd(int port, int level, int irq) -{ - int reg, rv; - - rv = tcpc_read(port, ANX7688_REG_HPD, ®); - if (rv) - return rv; - - if (level) - reg |= ANX7688_REG_HPD_HIGH; - else - reg &= ~ANX7688_REG_HPD_HIGH; - - if (irq) - reg |= ANX7688_REG_HPD_IRQ; - else - reg &= ~ANX7688_REG_HPD_IRQ; - - return tcpc_write(port, ANX7688_REG_HPD, reg); -} - -int anx7688_enable_cable_detection(int port) -{ - return tcpc_write(port, TCPC_REG_COMMAND, 0xff); -} - -int anx7688_set_power_supply_ready(int port) -{ - return tcpc_write(port, TCPC_REG_COMMAND, 0x77); -} - -int anx7688_power_supply_reset(int port) -{ - return tcpc_write(port, TCPC_REG_COMMAND, 0x66); -} - -static void anx7688_tcpc_alert(int port) -{ - int alert, rv; - - rv = tcpc_read16(port, TCPC_REG_ALERT, &alert); - /* process and clear alert status */ - tcpci_tcpc_alert(port); - - if (!rv && (alert & ANX7688_VENDOR_ALERT)) - anx7688_update_hpd_enable(port); -} - -static int anx7688_mux_set(const struct usb_mux *me, mux_state_t mux_state, - bool *ack_required) -{ - int reg = 0; - int rv, polarity; - - /* This driver does not use host command ACKs */ - *ack_required = false; - - rv = mux_read(me, TCPC_REG_CONFIG_STD_OUTPUT, ®); - if (rv != EC_SUCCESS) - return rv; - - reg &= ~TCPC_REG_CONFIG_STD_OUTPUT_MUX_MASK; - if (mux_state & USB_PD_MUX_USB_ENABLED) - reg |= TCPC_REG_CONFIG_STD_OUTPUT_MUX_USB; - if (mux_state & USB_PD_MUX_DP_ENABLED) - reg |= TCPC_REG_CONFIG_STD_OUTPUT_MUX_DP; - - /* ANX7688 needs to set bit0 */ - rv = mux_read(me, TCPC_REG_TCPC_CTRL, &polarity); - if (rv != EC_SUCCESS) - return rv; - - /* copy the polarity from TCPC_CTRL[0], take care clear then set */ - reg &= ~TCPC_REG_TCPC_CTRL_POLARITY(1); - reg |= TCPC_REG_TCPC_CTRL_POLARITY(polarity); - return mux_write(me, TCPC_REG_CONFIG_STD_OUTPUT, reg); -} - -#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC -static bool anx7688_tcpm_check_vbus_level(int port, enum vbus_level level) -{ - int reg = 0; - - /* On ANX7688, POWER_STATUS.VBusPresent (bit 2) is averaged 16 times, so - * its value may not be set to 1 quickly enough during power role swap. - * Therefore, we use a proprietary register to read the unfiltered VBus - * value. See crosbug.com/p/55221 . - */ - i2c_read8(I2C_PORT_TCPC, 0x28, 0x40, ®); - - if (level == VBUS_PRESENT) - return ((reg & 0x10) ? 1 : 0); - else - return ((reg & 0x10) ? 0 : 1); -} -#endif - -/* ANX7688 is a TCPCI compatible port controller */ -const struct tcpm_drv anx7688_tcpm_drv = { - .init = &anx7688_init, - .release = &anx7688_release, - .get_cc = &tcpci_tcpm_get_cc, -#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC - .check_vbus_level = &anx7688_tcpm_check_vbus_level, -#endif - .select_rp_value = &tcpci_tcpm_select_rp_value, - .set_cc = &tcpci_tcpm_set_cc, - .set_polarity = &tcpci_tcpm_set_polarity, -#ifdef CONFIG_USB_PD_DECODE_SOP - .sop_prime_enable = &tcpci_tcpm_sop_prime_enable, -#endif - .set_vconn = &tcpci_tcpm_set_vconn, - .set_msg_header = &tcpci_tcpm_set_msg_header, - .set_rx_enable = &tcpci_tcpm_set_rx_enable, - .get_message_raw = &tcpci_tcpm_get_message_raw, - .transmit = &tcpci_tcpm_transmit, - .tcpc_alert = &anx7688_tcpc_alert, - .set_bist_test_mode = &tcpci_set_bist_test_mode, -}; - -#ifdef CONFIG_USB_PD_TCPM_MUX -const struct usb_mux_driver anx7688_usb_mux_driver = { - .init = tcpci_tcpm_mux_init, - .set = anx7688_mux_set, - .get = tcpci_tcpm_mux_get, -}; -#endif /* CONFIG_USB_PD_TCPM_MUX */ |