diff options
Diffstat (limited to 'board/servo_v4p1/fusb302b.c')
| -rw-r--r-- | board/servo_v4p1/fusb302b.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/board/servo_v4p1/fusb302b.c b/board/servo_v4p1/fusb302b.c deleted file mode 100644 index 4e144dec05..0000000000 --- a/board/servo_v4p1/fusb302b.c +++ /dev/null @@ -1,219 +0,0 @@ -/* Copyright 2020 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 "i2c.h" -#include "fusb302b.h" -#include "gpio.h" -#include "hooks.h" -#include "ioexpanders.h" -#include "util.h" -#include "task.h" -#include "time.h" -#include "usb_pd.h" - -static int port; -static int status0; -static int status1; -static int interrupt; -static struct mutex measure_lock; - -static int tcpc_write(int reg, int val) -{ - return i2c_write8(port, FUSB302_I2C_ADDR_FLAGS, reg, val); -} - -static int tcpc_read(int reg, int *val) -{ - return i2c_read8(port, FUSB302_I2C_ADDR_FLAGS, reg, val); -} - -int init_fusb302b(int p) -{ - int ret; - int reg; - int interrupta; - int interruptb; - - /* Configure fusb302b for SNK only operation */ - port = p; - - ret = tcpc_write(TCPC_REG_RESET, TCPC_REG_RESET_SW_RESET); - if (ret) - return ret; - - /* Create interrupt masks */ - reg = 0xFF; - /* CC level changes */ - reg &= ~TCPC_REG_MASK_BC_LVL; - /* misc alert */ - reg &= ~TCPC_REG_MASK_ALERT; - /* VBUS threshold crossed (~4.0V) */ - reg &= ~TCPC_REG_MASK_VBUSOK; - tcpc_write(TCPC_REG_MASK, reg); - - /* Interrupt Enable */ - ret = tcpc_read(TCPC_REG_CONTROL0, ®); - if (ret) - return ret; - - reg &= ~TCPC_REG_CONTROL0_INT_MASK; - ret = tcpc_write(TCPC_REG_CONTROL0, reg); - if (ret) - return ret; - - ret = tcpc_write(TCPC_REG_POWER, TCPC_REG_POWER_PWR_ALL); - if (ret) - return ret; - - /* reading interrupt registers clears them */ - ret = tcpc_read(TCPC_REG_INTERRUPT, &interrupt); - if (ret) - return ret; - - - ret = tcpc_read(TCPC_REG_INTERRUPTA, &interrupta); - if (ret) - return ret; - - ret = tcpc_read(TCPC_REG_INTERRUPTB, &interruptb); - if (ret) - return ret; - - /* Call this, will detect a charger that's already plugged in */ - update_status_fusb302b(); - - /* Enable interrupt */ - gpio_enable_interrupt(GPIO_CHGSRV_TCPC_INT_ODL); - - return EC_SUCCESS; -} - -void fusb302b_irq(void) -{ - tcpc_read(TCPC_REG_INTERRUPT, &interrupt); - tcpc_read(TCPC_REG_STATUS0, &status0); - tcpc_read(TCPC_REG_STATUS1, &status1); - - task_wake(TASK_ID_PD_C2); -} -DECLARE_DEFERRED(fusb302b_irq); - -int update_status_fusb302b(void) -{ - hook_call_deferred(&fusb302b_irq_data, 0); - return EC_SUCCESS; -} - -int is_vbus_present(void) -{ - return (status0 & 0x80); -} - -/* Convert BC LVL values (in FUSB302) to Type-C CC Voltage Status */ -static int convert_bc_lvl(int bc_lvl) -{ - int ret; - - switch (bc_lvl) { - case 1: - ret = TYPEC_CC_VOLT_RP_DEF; - break; - case 2: - ret = TYPEC_CC_VOLT_RP_1_5; - break; - case 3: - ret = TYPEC_CC_VOLT_RP_3_0; - break; - default: - ret = TYPEC_CC_VOLT_OPEN; - } - - return ret; -} - -int get_cc(int *cc1, int *cc2) -{ - int reg; - int orig_meas_cc1; - int orig_meas_cc2; - int bc_lvl_cc1; - int bc_lvl_cc2; - - mutex_lock(&measure_lock); - - /* - * Measure CC1 first. - */ - tcpc_read(TCPC_REG_SWITCHES0, ®); - - /* save original state to be returned to later... */ - if (reg & TCPC_REG_SWITCHES0_MEAS_CC1) - orig_meas_cc1 = 1; - else - orig_meas_cc1 = 0; - - if (reg & TCPC_REG_SWITCHES0_MEAS_CC2) - orig_meas_cc2 = 1; - else - orig_meas_cc2 = 0; - - - /* Disable CC2 measurement switch, enable CC1 measurement switch */ - reg &= ~TCPC_REG_SWITCHES0_MEAS_CC2; - reg |= TCPC_REG_SWITCHES0_MEAS_CC1; - - tcpc_write(TCPC_REG_SWITCHES0, reg); - - /* CC1 is now being measured by FUSB302. */ - - /* Wait on measurement */ - usleep(250); - - tcpc_read(TCPC_REG_STATUS0, &bc_lvl_cc1); - - /* mask away unwanted bits */ - bc_lvl_cc1 &= (TCPC_REG_STATUS0_BC_LVL0 | TCPC_REG_STATUS0_BC_LVL1); - - /* - * Measure CC2 next. - */ - - tcpc_read(TCPC_REG_SWITCHES0, ®); - - /* Disable CC1 measurement switch, enable CC2 measurement switch */ - reg &= ~TCPC_REG_SWITCHES0_MEAS_CC1; - reg |= TCPC_REG_SWITCHES0_MEAS_CC2; - - tcpc_write(TCPC_REG_SWITCHES0, reg); - - /* CC2 is now being measured by FUSB302. */ - - /* Wait on measurement */ - usleep(250); - - tcpc_read(TCPC_REG_STATUS0, &bc_lvl_cc2); - - /* mask away unwanted bits */ - bc_lvl_cc2 &= (TCPC_REG_STATUS0_BC_LVL0 | TCPC_REG_STATUS0_BC_LVL1); - - *cc1 = convert_bc_lvl(bc_lvl_cc1); - *cc2 = convert_bc_lvl(bc_lvl_cc2); - - /* return MEAS_CC1/2 switches to original state */ - tcpc_read(TCPC_REG_SWITCHES0, ®); - if (orig_meas_cc1) - reg |= TCPC_REG_SWITCHES0_MEAS_CC1; - else - reg &= ~TCPC_REG_SWITCHES0_MEAS_CC1; - if (orig_meas_cc2) - reg |= TCPC_REG_SWITCHES0_MEAS_CC2; - else - reg &= ~TCPC_REG_SWITCHES0_MEAS_CC2; - - tcpc_write(TCPC_REG_SWITCHES0, reg); - - mutex_unlock(&measure_lock); - return 0; -} |