diff options
Diffstat (limited to 'driver/tcpm/tusb422.c')
| -rw-r--r-- | driver/tcpm/tusb422.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/driver/tcpm/tusb422.c b/driver/tcpm/tusb422.c deleted file mode 100644 index f2a4ec2fb3..0000000000 --- a/driver/tcpm/tusb422.c +++ /dev/null @@ -1,195 +0,0 @@ -/* Copyright 2018 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. - */ - -/* Type-C port manager for TI TUSB422 Port Controller */ - -#include "common.h" -#include "tusb422.h" -#include "tcpm/tcpci.h" -#include "tcpm/tcpm.h" -#include "timer.h" -#include "usb_pd.h" - -#ifndef CONFIG_USB_PD_TCPM_TCPCI -#error "TUSB422 is using a standard TCPCI interface" -#error "Please upgrade your board configuration" - -#endif - -#if defined(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) && \ - !defined(CONFIG_USB_PD_TCPC_LOW_POWER) -#error "TUSB422 driver requires CONFIG_USB_PD_TCPC_LOW_POWER if " \ - "CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE is enabled" -#endif - -#if defined(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) && \ - defined(CONFIG_USB_PD_DISCHARGE_TCPC) -#error "TUSB422 must disable TCPC discharge to support enabling Auto " \ - "Discharge Disconnect all the time." -#endif - -enum tusb422_reg_addr { - TUSB422_REG_VBUS_AND_VCONN_CONTROL = 0x98, -}; - -enum vbus_and_vconn_control_mask { - INT_VCONNDIS_DISABLE = BIT(1), - INT_VBUSDIS_DISABLE = BIT(2), -}; - -/* The TUSB422 cannot drive an FRS GPIO, but can detect FRS */ -static int tusb422_set_frs_enable(int port, int enable) -{ - return tcpc_update8(port, TUSB422_REG_PHY_BMC_RX_CTRL, - TUSB422_REG_PHY_BMC_RX_CTRL_FRS_RX_EN, - enable ? MASK_SET : MASK_CLR); -} - -static int tusb422_tcpci_tcpm_init(int port) -{ - int rv; - - /* - * Do not perform TCPC soft reset while waking from Low Power Mode, - * because it makes DRP incapable of looking for connection correctly - * (see b/176986511) and probably breaks firmware_PDTrySrc test - * (see b/179234089). - * - * TODO(b/179234089): Consider implementing function that performs - * only necessary things when leaving Low Power Mode, so we can perform - * TCPC soft reset here. - */ - - rv = tcpci_tcpm_init(port); - if (rv) - return rv; - - if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE)) { - /* - * When dual role auto toggle is enabled, the TUSB422 needs - * auto discharge disconnect enabled so that the CC state - * is detected correctly. - * Without this, the CC lines get stuck in the SRC.Open state - * after updating the ROLE Control register on a device connect. - */ - tusb422_tcpm_drv.tcpc_enable_auto_discharge_disconnect(port, 1); - - /* - * Disable internal VBUS discharge. AutoDischargeDisconnect must - * generally remain enabled to keep TUSB422 in active mode. - * However, this will interfere with FRS by default by - * discharging at inappropriate times. Mitigate this by - * disabling internal VBUS discharge. The TUSB422 must rely on - * external VBUS discharge. See TUSB422 datasheet, 7.4.2 Active - * Mode. - */ - tcpc_write(port, TUSB422_REG_VBUS_AND_VCONN_CONTROL, - INT_VBUSDIS_DISABLE); - } - if (IS_ENABLED(CONFIG_USB_PD_FRS_TCPC)) { - /* Disable FRS detection, and enable the FRS detection alert */ - tusb422_set_frs_enable(port, 0); - tcpc_update16(port, TCPC_REG_ALERT_MASK, - TCPC_REG_ALERT_MASK_VENDOR_DEF, MASK_SET); - tcpc_update8(port, TUSB422_REG_VENDOR_INTERRUPTS_MASK, - TUSB422_REG_VENDOR_INTERRUPTS_MASK_FRS_RX, - MASK_SET); - } - /* - * VBUS detection is supposed to be enabled by default, however the - * TUSB422 has this disabled following reset. - */ - /* Enable VBUS detection */ - return tcpc_write16(port, TCPC_REG_COMMAND, - TCPC_REG_COMMAND_ENABLE_VBUS_DETECT); -} - -static int tusb422_tcpm_set_cc(int port, int pull) -{ - /* - * Enable AutoDischargeDisconnect to keep TUSB422 in active mode through - * this transition. Note that the configuration keeps the TCPC from - * actually discharging VBUS in this case. - */ - if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE)) - tusb422_tcpm_drv.tcpc_enable_auto_discharge_disconnect(port, 1); - - return tcpci_tcpm_set_cc(port, pull); -} - -#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE -static int tusb422_tcpc_drp_toggle(int port) -{ - /* - * The TUSB422 requires auto discharge disconnect to be enabled for - * active mode (not unattached) operation. Make sure it is disabled - * before enabling DRP toggling. - * - * USB Type-C Port Controller Interface Specification revision 2.0, - * Figure 4-21 Source Disconnect and Figure 4-22 Sink Disconnect - */ - tusb422_tcpm_drv.tcpc_enable_auto_discharge_disconnect(port, 0); - - return tcpci_tcpc_drp_toggle(port); -} -#endif - -static void tusb422_tcpci_tcpc_alert(int port) -{ - if (IS_ENABLED(CONFIG_USB_PD_FRS_TCPC)) { - int regval; - - /* FRS detection is a vendor defined alert */ - tcpc_read(port, TUSB422_REG_VENDOR_INTERRUPTS_STATUS, ®val); - if (regval & TUSB422_REG_VENDOR_INTERRUPTS_STATUS_FRS_RX) { - tusb422_set_frs_enable(port, 0); - tcpc_write(port, TUSB422_REG_VENDOR_INTERRUPTS_STATUS, - regval); - pd_got_frs_signal(port); - } - } - tcpci_tcpc_alert(port); -} - -const struct tcpm_drv tusb422_tcpm_drv = { - .init = &tusb422_tcpci_tcpm_init, - .release = &tcpci_tcpm_release, - .get_cc = &tcpci_tcpm_get_cc, -#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC - .check_vbus_level = &tcpci_tcpm_check_vbus_level, -#endif - .select_rp_value = &tcpci_tcpm_select_rp_value, - .set_cc = &tusb422_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 = &tusb422_tcpci_tcpc_alert, -#ifdef CONFIG_USB_PD_DISCHARGE_TCPC - .tcpc_discharge_vbus = &tcpci_tcpc_discharge_vbus, -#endif - .tcpc_enable_auto_discharge_disconnect = - &tcpci_tcpc_enable_auto_discharge_disconnect, -#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE - .drp_toggle = &tusb422_tcpc_drp_toggle, -#endif -#ifdef CONFIG_USB_PD_PPC - .set_snk_ctrl = &tcpci_tcpm_set_snk_ctrl, - .set_src_ctrl = &tcpci_tcpm_set_src_ctrl, -#endif - .get_chip_info = &tcpci_get_chip_info, -#ifdef CONFIG_USB_PD_TCPC_LOW_POWER - .enter_low_power_mode = &tcpci_enter_low_power_mode, -#endif - .set_bist_test_mode = &tcpci_set_bist_test_mode, -#ifdef CONFIG_USB_PD_FRS_TCPC - .set_frs_enable = &tusb422_set_frs_enable, -#endif -}; |