diff options
Diffstat (limited to 'driver/tcpm/mt6370.c')
| -rw-r--r-- | driver/tcpm/mt6370.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/driver/tcpm/mt6370.c b/driver/tcpm/mt6370.c deleted file mode 100644 index 100a4d9eeb..0000000000 --- a/driver/tcpm/mt6370.c +++ /dev/null @@ -1,222 +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. - * - * MT6370 TCPC Driver - */ - -#include "console.h" -#include "hooks.h" -#include "mt6370.h" -#include "task.h" -#include "tcpm/tcpci.h" -#include "tcpm/tcpm.h" -#include "timer.h" -#include "usb_mux.h" -#include "usb_pd.h" -#include "util.h" - -#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args) - -static int mt6370_polarity; - -/* i2c_write function which won't wake TCPC from low power mode. */ -static int mt6370_i2c_write8(int port, int reg, int val) -{ - return i2c_write8(tcpc_config[port].i2c_info.port, - tcpc_config[port].i2c_info.addr_flags, reg, val); -} - -static int mt6370_init(int port) -{ - int rv, val; - - rv = tcpc_read(port, MT6370_REG_IDLE_CTRL, &val); - - /* Only do soft-reset in shipping mode. (b:122017882) */ - if (!(val & MT6370_REG_SHIPPING_OFF)) { - - /* Software reset. */ - rv = tcpc_write(port, MT6370_REG_SWRESET, 1); - if (rv) - return rv; - - /* Need 1 ms for software reset. */ - msleep(1); - } - - /* The earliest point that we can do generic init. */ - rv = tcpci_tcpm_init(port); - - if (rv) - return rv; - - /* - * AUTO IDLE off, shipping off, select CK_300K from BICIO_320K, - * PD3.0 ext-msg on. - */ - rv = tcpc_write(port, MT6370_REG_IDLE_CTRL, - MT6370_REG_IDLE_SET(0, 1, 0, 0)); - /* CC Detect Debounce 5 */ - rv |= tcpc_write(port, MT6370_REG_TTCPC_FILTER, 5); - /* DRP Duty */ - rv |= tcpc_write(port, MT6370_REG_DRP_TOGGLE_CYCLE, 4); - rv |= tcpc_write16(port, MT6370_REG_DRP_DUTY_CTRL, 400); - /* Vconn OC on */ - rv |= tcpc_write(port, MT6370_REG_VCONN_CLIMITEN, 1); - /* PHY control */ - rv |= tcpc_write(port, MT6370_REG_PHY_CTRL1, - MT6370_REG_PHY_CTRL1_SET(0, 7, 0, 1)); - rv |= tcpc_write(port, MT6370_REG_PHY_CTRL3, 0x82); - - return rv; -} - -static inline int mt6370_init_cc_params(int port, int cc_res) -{ - int rv, en, sel; - - if (cc_res == TYPEC_CC_VOLT_RP_DEF) { /* RXCC threshold : 0.55V */ - en = 1; - sel = MT6370_OCCTRL_600MA | MT6370_MASK_BMCIO_RXDZSEL; - } else { /* RD threshold : 0.4V & RP threshold : 0.7V */ - en = 0; - sel = MT6370_OCCTRL_600MA; - } - rv = tcpc_write(port, MT6370_REG_BMCIO_RXDZEN, en); - if (!rv) - rv = tcpc_write(port, MT6370_REG_BMCIO_RXDZSEL, sel); - return rv; -} - -static int mt6370_get_cc(int port, enum tcpc_cc_voltage_status *cc1, - enum tcpc_cc_voltage_status *cc2) -{ - int status; - int rv; - int role, is_snk; - - rv = tcpc_read(port, TCPC_REG_CC_STATUS, &status); - - /* If tcpc read fails, return error and CC as open */ - if (rv) { - *cc1 = TYPEC_CC_VOLT_OPEN; - *cc2 = TYPEC_CC_VOLT_OPEN; - return rv; - } - - *cc1 = TCPC_REG_CC_STATUS_CC1(status); - *cc2 = TCPC_REG_CC_STATUS_CC2(status); - - /* - * If status is not open, then OR in termination to convert to - * enum tcpc_cc_voltage_status. - * - * MT6370 TCPC follows USB PD 1.0 protocol. When DRP not auto-toggling, - * it will not update the DRP_RESULT bits in TCPC_REG_CC_STATUS, - * instead, we should check CC1/CC2 bits in TCPC_REG_ROLE_CTRL. - */ - rv = tcpc_read(port, TCPC_REG_ROLE_CTRL, &role); - - if (TCPC_REG_ROLE_CTRL_DRP(role)) - is_snk = TCPC_REG_CC_STATUS_TERM(status); - else - /* CC1/CC2 states are the same, checking one-side is enough. */ - is_snk = TCPC_REG_CC_STATUS_CC1(role) == TYPEC_CC_RD; - - if (is_snk) { - if (*cc1 != TYPEC_CC_VOLT_OPEN) - *cc1 |= 0x04; - if (*cc2 != TYPEC_CC_VOLT_OPEN) - *cc2 |= 0x04; - } - - rv = mt6370_init_cc_params(port, (int)mt6370_polarity ? *cc1 : *cc2); - return rv; -} - -static int mt6370_set_cc(int port, int pull) -{ - if (pull == TYPEC_CC_RD) - mt6370_init_cc_params(port, TYPEC_CC_VOLT_RP_DEF); - return tcpci_tcpm_set_cc(port, pull); -} - -#ifdef CONFIG_USB_PD_TCPC_LOW_POWER -static int mt6370_enter_low_power_mode(int port) -{ - int rv; - - /* VBUS_DET_EN for detecting charger plug. */ - rv = tcpc_write(port, MT6370_REG_BMC_CTRL, - MT6370_REG_BMCIO_LPEN | MT6370_REG_VBUS_DET_EN); - - if (rv) - return rv; - - return tcpci_enter_low_power_mode(port); -} -#endif - -static int mt6370_set_polarity(int port, enum tcpc_cc_polarity polarity) -{ - enum tcpc_cc_voltage_status cc1, cc2; - - mt6370_polarity = polarity; - mt6370_get_cc(port, &cc1, &cc2); - return tcpci_tcpm_set_polarity(port, polarity); -} - -int mt6370_vconn_discharge(int port) -{ - /* - * Write to mt6370 in low-power mode may return fail, but it is - * actually written. So we just ignore its return value. - */ - mt6370_i2c_write8(port, MT6370_REG_OVP_FLAG_SEL, - MT6370_REG_DISCHARGE_LVL); - /* Set MT6370_REG_DISCHARGE_EN bit and also the rest default value. */ - mt6370_i2c_write8(port, MT6370_REG_BMC_CTRL, - MT6370_REG_DISCHARGE_EN | - MT6370_REG_BMC_CTRL_DEFAULT); - - return EC_SUCCESS; -} - -/* MT6370 is a TCPCI compatible port controller */ -const struct tcpm_drv mt6370_tcpm_drv = { - .init = &mt6370_init, - .release = &tcpci_tcpm_release, - .get_cc = &mt6370_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 = &mt6370_set_cc, - .set_polarity = &mt6370_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 = &tcpci_tcpc_alert, -#ifdef CONFIG_USB_PD_DISCHARGE_TCPC - .tcpc_discharge_vbus = &tcpci_tcpc_discharge_vbus, -#endif -#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE - .drp_toggle = &tcpci_tcpc_drp_toggle, -#endif - .get_chip_info = &tcpci_get_chip_info, -#ifdef CONFIG_USB_PD_PPC - .set_snk_ctrl = &tcpci_tcpm_set_snk_ctrl, - .set_src_ctrl = &tcpci_tcpm_set_src_ctrl, -#endif -#ifdef CONFIG_USB_PD_TCPC_LOW_POWER - .enter_low_power_mode = &mt6370_enter_low_power_mode, -#endif - .set_bist_test_mode = &tcpci_set_bist_test_mode, -}; |