diff options
Diffstat (limited to 'driver/tcpm/rt1715.c')
| -rw-r--r-- | driver/tcpm/rt1715.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/driver/tcpm/rt1715.c b/driver/tcpm/rt1715.c deleted file mode 100644 index ed3d283bc9..0000000000 --- a/driver/tcpm/rt1715.c +++ /dev/null @@ -1,263 +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. - */ -/* Richtek RT1715 Type-C port controller */ - -#include "common.h" -#include "rt1715.h" -#include "tcpm/tcpci.h" -#include "tcpm/tcpm.h" -#include "timer.h" -#include "usb_pd.h" -#include "usb_pd_tcpm.h" - -#ifndef CONFIG_USB_PD_TCPM_TCPCI -#error "RT1715 is using a standard TCPCI interface" -#error "Please upgrade your board configuration" -#endif - -static int rt1715_polarity[CONFIG_USB_PD_PORT_MAX_COUNT]; -static bool rt1715_initialized[CONFIG_USB_PD_PORT_MAX_COUNT]; - - -static int rt1715_enable_ext_messages(int port, int enable) -{ - return tcpc_update8(port, RT1715_REG_VENDOR_5, - RT1715_REG_VENDOR_5_ENEXTMSG, - enable ? MASK_SET : MASK_CLR); -} - -static int rt1715_tcpci_tcpm_init(int port) -{ - int rv; - /* - * Do not fully reinitialize the registers when leaving low-power mode. - * TODO(b/179234089): Generalize this concept in the tcpm_drv API. - */ - - /* Only do soft-reset on first init. */ - if (!(rt1715_initialized[port])) { - /* RT1715 has a vendor-defined register reset */ - rv = tcpc_update8(port, RT1715_REG_VENDOR_7, - RT1715_REG_VENDOR_7_SOFT_RESET, MASK_SET); - if (rv) - return rv; - rt1715_initialized[port] = true; - msleep(10); - } - - rv = tcpc_update8(port, RT1715_REG_VENDOR_5, - RT1715_REG_VENDOR_5_SHUTDOWN_OFF, MASK_SET); - if (rv) - return rv; - - if (IS_ENABLED(CONFIG_USB_PD_REV30)) - rt1715_enable_ext_messages(port, 1); - - rv = tcpc_write(port, RT1715_REG_I2CRST_CTRL, - (RT1715_REG_I2CRST_CTRL_EN | - RT1715_REG_I2CRST_CTRL_TOUT_200MS)); - if (rv) - return rv; - - /* Unmask interrupt for LPM wakeup */ - rv = tcpc_write(port, RT1715_REG_RT_MASK, RT1715_REG_RT_MASK_M_WAKEUP); - if (rv) - return rv; - - /* - * Set tTCPCFilter (CC debounce time) to 400 us - * (min 250 us, max 500 us). - */ - rv = tcpc_write(port, RT1715_REG_TTCPC_FILTER, - RT1715_REG_TTCPC_FILTER_400US); - if (rv) - return rv; - - rv = tcpc_write(port, RT1715_REG_DRP_TOGGLE_CYCLE, - RT1715_REG_DRP_TOGGLE_CYCLE_76MS); - if (rv) - return rv; - - /* PHY control */ - /* Set PHY control registers to Richtek recommended values */ - rv = tcpc_write(port, RT1715_REG_PHY_CTRL1, - (RT1715_REG_PHY_CTRL1_ENRETRY | - RT1715_REG_PHY_CTRL1_TRANSCNT_7 | - RT1715_REG_PHY_CTRL1_TRXFILTER_125NS)); - if (rv) - return rv; - - /* Set PHY control registers to Richtek recommended values */ - rv = tcpc_write(port, RT1715_REG_PHY_CTRL2, - RT1715_REG_PHY_CTRL2_CDRTHRESH_2_58US); - if (rv) - return rv; - - return tcpci_tcpm_init(port); -} - -/* - * Selects the CC PHY noise filter voltage level according to the current - * CC voltage level. - * - * @param cc_level The CC voltage level for the port's current role - * @return EC_SUCCESS if writes succeed; failure code otherwise - */ -static inline int rt1715_init_cc_params(int port, int cc_level) -{ - int rv, en, sel; - - if (cc_level == TYPEC_CC_VOLT_RP_DEF) { - /* RXCC threshold : 0.55V */ - en = RT1715_REG_BMCIO_RXDZEN_DISABLE; - - sel = RT1715_REG_BMCIO_RXDZSEL_OCCTRL_600MA - | RT1715_REG_BMCIO_RXDZSEL_SEL; - } else { - /* RD threshold : 0.35V & RP threshold : 0.75V */ - en = RT1715_REG_BMCIO_RXDZEN_ENABLE; - - sel = RT1715_REG_BMCIO_RXDZSEL_OCCTRL_600MA - | RT1715_REG_BMCIO_RXDZSEL_SEL; - } - - rv = tcpc_write(port, RT1715_REG_BMCIO_RXDZEN, en); - if (!rv) - rv = tcpc_write(port, RT1715_REG_BMCIO_RXDZSEL, sel); - - return rv; -} - -static int rt1715_get_cc(int port, enum tcpc_cc_voltage_status *cc1, - enum tcpc_cc_voltage_status *cc2) -{ - int rv; - - rv = tcpci_tcpm_get_cc(port, cc1, cc2); - if (rv) - return rv; - - return rt1715_init_cc_params(port, rt1715_polarity[port] ? *cc2 : *cc1); -} - -/* - * See b/179256608#comment26 for explanation. - * Disable 24MHz oscillator and enable LPM. Upon exit from LPM, the LPEN will be - * reset to 0. - * - * The exit condition for LPM is CC status change, and the wakeup interrupt will - * be set. - */ -#ifdef CONFIG_USB_PD_TCPC_LOW_POWER -static int rt1715_enter_low_power_mode(int port) -{ - int regval; - int rv; - - rv = tcpc_read(port, RT1715_REG_PWR, ®val); - if (rv) - return rv; - - regval |= RT1715_REG_PWR_BMCIO_LPEN; - regval &= ~RT1715_REG_PWR_BMCIO_OSCEN; - rv = tcpc_write(port, RT1715_REG_PWR, regval); - if (rv) - return rv; - - return tcpci_enter_low_power_mode(port); -} -#endif - -static int rt1715_set_vconn(int port, int enable) -{ - int rv; - int regval; - - /* - * Auto-idle cannot be used while sourcing Vconn. - * See b/179256608#comment26 for explanation. - */ - rv = tcpc_read(port, RT1715_REG_VENDOR_5, ®val); - if (rv) - return rv; - - if (enable) - regval &= ~RT1715_REG_VENDOR_5_AUTOIDLE_EN; - else - regval |= RT1715_REG_VENDOR_5_AUTOIDLE_EN; - - rv = tcpc_write(port, RT1715_REG_VENDOR_5, regval); - if (rv) - return rv; - - return tcpci_tcpm_set_vconn(port, enable); -} - -static int rt1715_set_polarity(int port, enum tcpc_cc_polarity polarity) -{ - int rv; - enum tcpc_cc_voltage_status cc1, cc2; - - rt1715_polarity[port] = polarity; - - rv = tcpci_tcpm_get_cc(port, &cc1, &cc2); - if (rv) - return rv; - - rv = rt1715_init_cc_params(port, polarity ? cc2 : cc1); - if (rv) - return rv; - - return tcpci_tcpm_set_polarity(port, polarity); -} - -static void rt1715_alert(int port) -{ - /* - * Make sure the wakeup interrupt is cleared. This bit is set on wakeup - * from LPM. See b/179256608#comment16 for explanation. - */ - tcpc_write(port, RT1715_REG_RT_INT, RT1715_REG_RT_INT_WAKEUP); - - tcpci_tcpc_alert(port); -} - -const struct tcpm_drv rt1715_tcpm_drv = { - .init = &rt1715_tcpci_tcpm_init, - .release = &tcpci_tcpm_release, - .get_cc = &rt1715_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 = &tcpci_tcpm_set_cc, - .set_polarity = &rt1715_set_polarity, -#ifdef CONFIG_USB_PD_DECODE_SOP - .sop_prime_enable = &tcpci_tcpm_sop_prime_enable, -#endif - .set_vconn = &rt1715_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 = &rt1715_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 = &tcpci_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 = &rt1715_enter_low_power_mode, -#endif - .set_bist_test_mode = &tcpci_set_bist_test_mode, -}; |