diff options
Diffstat (limited to 'board/chocodile_vpdmcu/vpd_api.c')
| -rw-r--r-- | board/chocodile_vpdmcu/vpd_api.c | 531 |
1 files changed, 0 insertions, 531 deletions
diff --git a/board/chocodile_vpdmcu/vpd_api.c b/board/chocodile_vpdmcu/vpd_api.c deleted file mode 100644 index cdd2d9776d..0000000000 --- a/board/chocodile_vpdmcu/vpd_api.c +++ /dev/null @@ -1,531 +0,0 @@ -/* Copyright 2019 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 "adc.h" -#include "gpio.h" -#include "registers.h" -#include "vpd_api.h" -#include "driver/tcpm/tcpm.h" - -/* - * Polarity based on 'DFP Perspective' (see table 4-10 USB Type-C Cable and - * Connector Specification Release 1.3) - * - * CC1 CC2 STATE POSITION - * ---------------------------------------- - * open open NC N/A - * Rd open UFP attached 1 - * open Rd UFP attached 2 - * open Ra pwr cable no UFP N/A - * Ra open pwr cable no UFP N/A - * Rd Ra pwr cable & UFP 1 - * Ra Rd pwr cable & UFP 2 - * Rd Rd dbg accessory N/A - * Ra Ra audio accessory N/A - * - * Note, V(Rd) > V(Ra) - */ -#ifndef PD_SRC_RD_THRESHOLD -#define PD_SRC_RD_THRESHOLD PD_SRC_DEF_RD_THRESH_MV -#endif -#ifndef PD_SRC_VNC -#define PD_SRC_VNC PD_SRC_DEF_VNC_MV -#endif - -#undef CC_RA -#define CC_RA(cc, sel) (cc < pd_src_rd_threshold[sel]) -#undef CC_RD -#define CC_RD(cc, sel) ((cc >= pd_src_rd_threshold[sel]) && (cc < PD_SRC_VNC)) - -/* (15.8K / (100K + 15.8K)) * 1000 = 136.4 */ -#define VBUS_SCALE_FACTOR 136 -/* (118K / (100K + 118K)) * 1000 = 541.3 */ -#define VCONN_SCALE_FACTOR 541 - -#define VBUS_DETECT_THRESHOLD 2500 /* mV */ -#define VCONN_DETECT_THRESHOLD 2500 /* mV */ - -#define SCALE(vmeas, sfactor) (((vmeas) * 1000) / (sfactor)) - -/* - * Type C power source charge current limits are identified by their cc - * voltage (set by selecting the proper Rd resistor). Any voltage below - * TYPE_C_SRC_500_THRESHOLD will not be identified as a type C charger. - */ -#define TYPE_C_SRC_DEFAULT_THRESHOLD 200 /* mV */ -#define TYPE_C_SRC_1500_THRESHOLD 660 /* mV */ -#define TYPE_C_SRC_3000_THRESHOLD 1230 /* mV */ - -/* Charge-Through pull up/down enabled */ -static int ct_cc_pull; -/* Charge-Through pull up value */ -static int ct_cc_rp_value; - -/* Charge-Through pull up/down enabled */ -static int host_cc_pull; -/* Charge-Through pull up value */ -static int host_cc_rp_value; - -/* Voltage thresholds for Ra attach in normal SRC mode */ -static int pd_src_rd_threshold[TYPEC_RP_RESERVED] = { - PD_SRC_DEF_RD_THRESH_MV, - PD_SRC_1_5_RD_THRESH_MV, - PD_SRC_3_0_RD_THRESH_MV, -}; - -/* Convert CC voltage to CC status */ -static int vpd_cc_voltage_to_status(int cc_volt, int cc_pull) -{ - /* If we have a pull-up, then we are source, check for Rd. */ - if (cc_pull == TYPEC_CC_RP) { - if (CC_RD(cc_volt, ct_cc_rp_value)) - return TYPEC_CC_RD; - else if (CC_RA(cc_volt, ct_cc_rp_value)) - return TYPEC_CC_VOLT_RA; - else - return TYPEC_CC_VOLT_OPEN; - /* If we have a pull-down, then we are sink, check for Rp. */ - } else if (cc_pull == TYPEC_CC_RD || cc_pull == TYPEC_CC_RA_RD) { - if (cc_volt >= TYPE_C_SRC_3000_THRESHOLD) - return TYPEC_CC_VOLT_RP_3_0; - else if (cc_volt >= TYPE_C_SRC_1500_THRESHOLD) - return TYPEC_CC_VOLT_RP_1_5; - else if (cc_volt >= TYPE_C_SRC_DEFAULT_THRESHOLD) - return TYPEC_CC_VOLT_RP_DEF; - else - return TYPEC_CC_VOLT_OPEN; - } else { - /* If we are open, then always return 0 */ - return 0; - } -} - -void vpd_ct_set_pull(int pull, int rp_value) -{ - ct_cc_pull = pull; - - switch (pull) { - case TYPEC_CC_RP: - ct_cc_rp_value = rp_value; - vpd_cc1_cc2_db_en_l(GPO_HIGH); - switch (rp_value) { - case TYPEC_RP_USB: - vpd_config_cc1_rp3a0_rd_l(PIN_ADC, 0); - vpd_config_cc2_rp3a0_rd_l(PIN_ADC, 0); - vpd_config_cc1_rpusb_odh(PIN_GPO, 1); - vpd_config_cc2_rpusb_odh(PIN_GPO, 1); - break; - case TYPEC_RP_3A0: - vpd_config_cc1_rpusb_odh(PIN_ADC, 0); - vpd_config_cc2_rpusb_odh(PIN_ADC, 0); - vpd_config_cc1_rp3a0_rd_l(PIN_GPO, 1); - vpd_config_cc2_rp3a0_rd_l(PIN_GPO, 1); - break; - } - break; - case TYPEC_CC_RD: - vpd_config_cc1_rpusb_odh(PIN_ADC, 0); - vpd_config_cc2_rpusb_odh(PIN_ADC, 0); - vpd_config_cc1_rp3a0_rd_l(PIN_GPO, 0); - vpd_config_cc2_rp3a0_rd_l(PIN_GPO, 0); - vpd_cc1_cc2_db_en_l(GPO_HIGH); - break; - case TYPEC_CC_OPEN: - vpd_cc1_cc2_db_en_l(GPO_HIGH); - vpd_config_cc1_rpusb_odh(PIN_ADC, 0); - vpd_config_cc2_rpusb_odh(PIN_ADC, 0); - vpd_config_cc1_rp3a0_rd_l(PIN_ADC, 0); - vpd_config_cc2_rp3a0_rd_l(PIN_ADC, 0); - break; - } -} - -void vpd_ct_get_cc(int *cc1, int *cc2) -{ - int cc1_v = 0; - int cc2_v = 0; - - switch (ct_cc_pull) { - case TYPEC_CC_RP: - switch (ct_cc_rp_value) { - case TYPEC_RP_USB: - cc1_v = adc_read_channel(ADC_CC1_RP3A0_RD_L); - cc2_v = adc_read_channel(ADC_CC2_RP3A0_RD_L); - break; - case TYPEC_RP_3A0: - cc1_v = adc_read_channel(ADC_CC1_RPUSB_ODH); - cc2_v = adc_read_channel(ADC_CC2_RPUSB_ODH); - break; - } - break; - case TYPEC_CC_RD: - cc1_v = adc_read_channel(ADC_CC1_RPUSB_ODH); - cc2_v = adc_read_channel(ADC_CC2_RPUSB_ODH); - break; - case TYPEC_CC_OPEN: - *cc1 = 0; - *cc2 = 0; - return; - } - - *cc1 = vpd_cc_voltage_to_status(cc1_v, ct_cc_pull); - *cc2 = vpd_cc_voltage_to_status(cc2_v, ct_cc_pull); -} - -void vpd_host_set_pull(int pull, int rp_value) -{ - host_cc_pull = pull; - - switch (pull) { - case TYPEC_CC_RP: - vpd_cc_db_en_od(GPO_LOW); - host_cc_rp_value = rp_value; - switch (rp_value) { - case TYPEC_RP_USB: - vpd_config_cc_rp3a0_rd_l(PIN_CMP, 0); - vpd_cc_rpusb_odh(GPO_HIGH); - break; - case TYPEC_RP_3A0: - vpd_cc_rpusb_odh(GPO_HZ); - vpd_config_cc_rp3a0_rd_l(PIN_GPO, 1); - break; - } - break; - case TYPEC_CC_RD: - vpd_cc_rpusb_odh(GPO_HZ); - vpd_cc_db_en_od(GPO_LOW); - vpd_config_cc_rp3a0_rd_l(PIN_GPO, 0); - break; - case TYPEC_CC_RA_RD: - vpd_cc_rpusb_odh(GPO_HZ); - vpd_config_cc_rp3a0_rd_l(PIN_CMP, 0); - - /* - * RA is connected to VCONN - * RD is connected to CC - */ - vpd_cc_db_en_od(GPO_HIGH); - break; - case TYPEC_CC_OPEN: - vpd_cc_rpusb_odh(GPO_HZ); - vpd_config_cc_rp3a0_rd_l(PIN_CMP, 0); - vpd_cc_db_en_od(GPO_LOW); - break; - } -} - -void vpd_host_get_cc(int *cc) -{ - *cc = vpd_cc_voltage_to_status( - adc_read_channel(ADC_CC_VPDMCU), host_cc_pull); -} - -void vpd_rx_enable(int en) -{ - tcpm_set_rx_enable(0, en); -} - -/* - * PA2: Configure as COMP2_INM6 or GPO - */ -void vpd_config_cc_rp3a0_rd_l(enum vpd_pin cfg, int en) -{ - if (cfg == PIN_GPO) { - /* Set output value in register */ - gpio_set_level(GPIO_CC_RP3A0_RD_L, en ? 1 : 0); - - /* Disable Analog mode and Enable GPO */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - & ~(3 << (2*2))) /* PA2 disable ADC */ - | (1 << (2*2)); /* Set as GPO */ - } else { - /* Set PA2 pin to ANALOG function */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - | (3 << (2*2))); /* PA2 in ANALOG mode */ - - /* Set PA3 pin to ANALOG function */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - | (3 << (2*3))); /* PA3 in ANALOG mode */ - - /* Disable Window Mode. Select PA3 */ - STM32_COMP_CSR &= ~STM32_COMP_WNDWEN; - - /* No output selection. We will use Interrupt */ - STM32_COMP_CSR &= ~STM32_COMP_CMP2OUTSEL_NONE; - - /* Not inverting */ - STM32_COMP_CSR &= ~STM32_COMP_CMP2POL; - - /* Select COMP2_INM6 (PA2) */ - STM32_COMP_CSR |= STM32_COMP_CMP2INSEL_INM6; - - /* COMP Enable */ - STM32_COMP_CSR |= STM32_COMP_CMP2EN; - } -} - -/* - * PA4: Configure as ADC, CMP, or GPO - */ -void vpd_config_cc1_rp3a0_rd_l(enum vpd_pin cfg, int en) -{ - if (cfg == PIN_GPO) { - /* Default high. Enable cc1 Rp3A0 pullup */ - gpio_set_level(GPIO_CC1_RP3A0_RD_L, en ? 1 : 0); - - /* Disable Analog mode and Enable GPO */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - & ~(3 << (2*4))) /* PA4 disable ADC */ - | (1 << (2*4)); /* Set as GPO */ - } - - if (cfg == PIN_ADC || cfg == PIN_CMP) { - /* Disable COMP2 */ - STM32_COMP_CSR &= ~STM32_COMP_CMP2EN; - - /* Set PA4 pin to Analog mode */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - | (3 << (2*4))); /* PA4 in ANALOG mode */ - - if (cfg == PIN_CMP) { - /* Set PA3 pin to ANALOG function */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - | (3 << (2*3))); /* PA3 in ANALOG mode */ - - /* Disable Window Mode. Select PA3*/ - STM32_COMP_CSR &= ~STM32_COMP_WNDWEN; - - /* No output selection. We will use Interrupt */ - STM32_COMP_CSR &= ~STM32_COMP_CMP2OUTSEL_NONE; - - /* Select COMP2_INM4 (PA4) */ - STM32_COMP_CSR |= STM32_COMP_CMP2INSEL_INM4; - - /* COMP2 Enable */ - STM32_COMP_CSR |= STM32_COMP_CMP2EN; - } - } -} - -/* - * PA5: Configure as ADC, COMP, or GPO - */ -void vpd_config_cc2_rp3a0_rd_l(enum vpd_pin cfg, int en) -{ - if (cfg == PIN_GPO) { - /* Set output value in register */ - gpio_set_level(GPIO_CC2_RP3A0_RD_L, en ? 1 : 0); - - /* Disable Analog mode and Enable GPO */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - & ~(3 << (2*5))) /* PA5 disable ADC */ - | (1 << (2*5)); /* Set as GPO */ - } - - if (cfg == PIN_ADC || cfg == PIN_CMP) { - /* Disable COMP2 */ - STM32_COMP_CSR &= ~STM32_COMP_CMP2EN; - - /* Set PA5 pin to ANALOG function */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - | (3 << (2*5))); /* PA5 in ANALOG mode */ - - if (cfg == PIN_CMP) { - /* Set PA3 pin to ANALOG function */ - STM32_GPIO_MODER(GPIO_A) = (STM32_GPIO_MODER(GPIO_A) - | (3 << (2*3))); /* PA3 in ANALOG mode */ - - /* Disable Window Mode. */ - STM32_COMP_CSR &= ~STM32_COMP_WNDWEN; - - /* No output selection. We will use Interrupt */ - STM32_COMP_CSR &= ~STM32_COMP_CMP2OUTSEL_NONE; - - /* Select COMP2_INM5 (PA5) */ - STM32_COMP_CSR |= STM32_COMP_CMP2INSEL_INM5; - - /* COMP2 Enable */ - STM32_COMP_CSR |= STM32_COMP_CMP2EN; - } - } -} - -/* - * PB0: Configure as ADC or GPO - */ -void vpd_config_cc1_rpusb_odh(enum vpd_pin cfg, int en) -{ - if (cfg == PIN_GPO) { - /* Set output value in register */ - gpio_set_level(GPIO_CC1_RPUSB_ODH, en ? 1 : 0); - - /* Disable Analog mode and Enable GPO */ - STM32_GPIO_MODER(GPIO_B) = (STM32_GPIO_MODER(GPIO_B) - & ~(3 << (2*0))) /* PB0 disable ADC */ - | (1 << (2*0)); /* Set as GPO */ - } else { - /* Enable Analog mode */ - STM32_GPIO_MODER(GPIO_B) = (STM32_GPIO_MODER(GPIO_B) - | (3 << (2*0))); /* PB0 in ANALOG mode */ - } -} - -/* - * PB1: Configure as ADC or GPO - */ -void vpd_config_cc2_rpusb_odh(enum vpd_pin cfg, int en) -{ - if (cfg == PIN_GPO) { - /* Set output value in register */ - gpio_set_level(GPIO_CC2_RPUSB_ODH, en ? 1 : 0); - - /* Disable Analog mode and Enable GPO */ - STM32_GPIO_MODER(GPIO_B) = (STM32_GPIO_MODER(GPIO_B) - & ~(3 << (2*1))) /* PB1 disable ADC */ - | (1 << (2*1)); /* Set as GPO */ - } else { - /* Enable Analog mode */ - STM32_GPIO_MODER(GPIO_B) = (STM32_GPIO_MODER(GPIO_B) - | (3 << (2*1))); /* PB1 in ANALOG mode */ - } -} - -inline int vpd_read_cc_vpdmcu(void) -{ - return adc_read_channel(ADC_CC_VPDMCU); -} - -inline int vpd_read_host_vbus(void) -{ - return SCALE(adc_read_channel(ADC_HOST_VBUS_VSENSE), VBUS_SCALE_FACTOR); -} - -inline int vpd_read_ct_vbus(void) -{ - return SCALE(adc_read_channel(ADC_CHARGE_VBUS_VSENSE), - VBUS_SCALE_FACTOR); -} - -inline int vpd_read_vconn(void) -{ - return SCALE(adc_read_channel(ADC_VCONN_VSENSE), VCONN_SCALE_FACTOR); -} - -inline int vpd_is_host_vbus_present(void) -{ - return (vpd_read_host_vbus() >= VBUS_DETECT_THRESHOLD); -} - -inline int vpd_is_ct_vbus_present(void) -{ - return (vpd_read_ct_vbus() >= VBUS_DETECT_THRESHOLD); -} - -inline int vpd_is_vconn_present(void) -{ - return (vpd_read_vconn() >= VCONN_DETECT_THRESHOLD); -} - -inline int vpd_read_rdconnect_ref(void) -{ - return adc_read_channel(ADC_RDCONNECT_REF); -} - -void vpd_red_led(int on) -{ - gpio_set_level(GPIO_DEBUG_LED_R_L, (on) ? 0 : 1); -} - -void vpd_green_led(int on) -{ - gpio_set_level(GPIO_DEBUG_LED_G_L, (on) ? 0 : 1); -} - -void vpd_vbus_pass_en(int en) -{ - gpio_set_level(GPIO_VBUS_PASS_EN, (en) ? 1 : 0); -} - -void vpd_present_billboard(enum vpd_billboard bb) -{ - switch (bb) { - case BB_NONE: - gpio_set_level(GPIO_PRESENT_BILLBOARD, 0); - gpio_set_flags(GPIO_PRESENT_BILLBOARD, GPIO_OUTPUT); - break; - case BB_SRC: - gpio_set_flags(GPIO_PRESENT_BILLBOARD, GPIO_INPUT); - /* Enable Pull-up on PA8 */ - STM32_GPIO_PUPDR(GPIO_A) |= (1 << (2 * 8)); - break; - case BB_SNK: - gpio_set_level(GPIO_PRESENT_BILLBOARD, 1); - gpio_set_flags(GPIO_PRESENT_BILLBOARD, GPIO_OUTPUT); - break; - } -} - -void vpd_mcu_cc_en(int en) -{ - gpio_set_level(GPIO_VPDMCU_CC_EN, (en) ? 1 : 0); -} - -void vpd_ct_cc_sel(enum vpd_cc sel) -{ - switch (sel) { - case CT_OPEN: - gpio_set_level(GPIO_CC1_SEL, 0); - gpio_set_level(GPIO_CC2_SEL, 0); - break; - case CT_CC1: - gpio_set_level(GPIO_CC2_SEL, 0); - gpio_set_level(GPIO_CC1_SEL, 1); - break; - case CT_CC2: - gpio_set_level(GPIO_CC1_SEL, 0); - gpio_set_level(GPIO_CC2_SEL, 1); - break; - } -} - -/* Set as GPO High, GPO Low, or High-Z */ -void vpd_cc_db_en_od(enum vpd_gpo val) -{ - if (val == GPO_HZ) { - gpio_set_flags(GPIO_CC_DB_EN_OD, GPIO_INPUT); - } else { - if (val == GPO_HIGH) - gpio_set_level(GPIO_CC_DB_EN_OD, 1); - else - gpio_set_level(GPIO_CC_DB_EN_OD, 0); - - gpio_set_flags(GPIO_CC_DB_EN_OD, GPIO_OUTPUT); - } -} - -void vpd_cc_rpusb_odh(enum vpd_gpo val) -{ - if (val == GPO_HZ) { - gpio_set_flags(GPIO_CC_RPUSB_ODH, GPIO_INPUT); - } else { - gpio_set_level(GPIO_CC_RPUSB_ODH, (val == GPO_HIGH) ? 1 : 0); - gpio_set_flags(GPIO_CC_RPUSB_ODH, GPIO_OUTPUT); - } -} - -void vpd_cc1_cc2_db_en_l(enum vpd_gpo val) -{ - if (val == GPO_HZ) { - gpio_set_flags(GPIO_CC1_CC2_DB_EN_L, GPIO_INPUT); - } else { - gpio_set_level(GPIO_CC1_CC2_DB_EN_L, (val == GPO_HIGH) ? 1 : 0); - gpio_set_flags(GPIO_CC1_CC2_DB_EN_L, GPIO_OUTPUT); - } -} - -void vpd_vconn_pwr_sel_odl(enum vpd_pwr en) -{ - gpio_set_level(GPIO_VCONN_PWR_SEL_ODL, (en == PWR_VBUS) ? 1 : 0); -} |