diff options
Diffstat (limited to 'common/mock/tcpci_i2c_mock.c')
| -rw-r--r-- | common/mock/tcpci_i2c_mock.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/common/mock/tcpci_i2c_mock.c b/common/mock/tcpci_i2c_mock.c new file mode 100644 index 0000000000..45ab613917 --- /dev/null +++ b/common/mock/tcpci_i2c_mock.c @@ -0,0 +1,141 @@ +/* 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 "mock/tcpci_i2c_mock.h" +#include "task.h" +#include "tcpci.h" +#include "test_util.h" + +struct tcpci_reg { + const char *name; + uint8_t size; + uint16_t value; +}; + +#define TCPCI_REG(reg_name, reg_size) \ + [reg_name] = { .name = #reg_name, .size = (reg_size) } + +static struct tcpci_reg tcpci_regs[] = { + TCPCI_REG(TCPC_REG_VENDOR_ID, 2), + TCPCI_REG(TCPC_REG_PRODUCT_ID, 2), + TCPCI_REG(TCPC_REG_BCD_DEV, 2), + TCPCI_REG(TCPC_REG_TC_REV, 2), + TCPCI_REG(TCPC_REG_PD_REV, 2), + TCPCI_REG(TCPC_REG_PD_INT_REV, 2), + TCPCI_REG(TCPC_REG_ALERT, 2), + TCPCI_REG(TCPC_REG_ALERT_MASK, 2), + TCPCI_REG(TCPC_REG_POWER_STATUS_MASK, 1), + TCPCI_REG(TCPC_REG_FAULT_STATUS_MASK, 1), + TCPCI_REG(TCPC_REG_EXT_STATUS_MASK, 1), + TCPCI_REG(TCPC_REG_ALERT_EXTENDED_MASK, 1), + TCPCI_REG(TCPC_REG_CONFIG_STD_OUTPUT, 1), + TCPCI_REG(TCPC_REG_TCPC_CTRL, 1), + TCPCI_REG(TCPC_REG_ROLE_CTRL, 1), + TCPCI_REG(TCPC_REG_FAULT_CTRL, 1), + TCPCI_REG(TCPC_REG_POWER_CTRL, 1), + TCPCI_REG(TCPC_REG_CC_STATUS, 1), + TCPCI_REG(TCPC_REG_POWER_STATUS, 1), + TCPCI_REG(TCPC_REG_FAULT_STATUS, 1), + TCPCI_REG(TCPC_REG_ALERT_EXT, 1), + TCPCI_REG(TCPC_REG_DEV_CAP_1, 2), + TCPCI_REG(TCPC_REG_DEV_CAP_2, 2), + TCPCI_REG(TCPC_REG_STD_INPUT_CAP, 1), + TCPCI_REG(TCPC_REG_STD_OUTPUT_CAP, 1), + TCPCI_REG(TCPC_REG_CONFIG_EXT_1, 1), + TCPCI_REG(TCPC_REG_MSG_HDR_INFO, 1), + TCPCI_REG(TCPC_REG_RX_DETECT, 1), + TCPCI_REG(TCPC_REG_RX_BYTE_CNT, 1), + TCPCI_REG(TCPC_REG_RX_BUF_FRAME_TYPE, 1), + TCPCI_REG(TCPC_REG_TRANSMIT, 1), + TCPCI_REG(TCPC_REG_VBUS_VOLTAGE, 2), + TCPCI_REG(TCPC_REG_VBUS_SINK_DISCONNECT_THRESH, 2), + TCPCI_REG(TCPC_REG_VBUS_STOP_DISCHARGE_THRESH, 2), + TCPCI_REG(TCPC_REG_VBUS_VOLTAGE_ALARM_HI_CFG, 2), + TCPCI_REG(TCPC_REG_VBUS_VOLTAGE_ALARM_LO_CFG, 2), + TCPCI_REG(TCPC_REG_COMMAND, 1), +}; + +void mock_tcpci_reset(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(tcpci_regs); i++) + tcpci_regs[i].value = 0; +} + +void mock_tcpci_set_reg(int reg_offset, uint16_t value) +{ + struct tcpci_reg *reg = tcpci_regs + reg_offset; + + reg->value = value; + ccprints("TCPCI mock set %s = 0x%x", reg->name, reg->value); +} + +uint16_t mock_tcpci_get_reg(int reg_offset) +{ + return tcpci_regs[reg_offset].value; +} + +int tcpci_i2c_xfer(int port, uint16_t slave_addr_flags, + const uint8_t *out, int out_size, + uint8_t *in, int in_size, int flags) +{ + struct tcpci_reg *reg; + + if (port != I2C_PORT_HOST_TCPC) { + ccprints("ERROR: wrong I2C port %d", port); + return EC_ERROR_UNKNOWN; + } + if (slave_addr_flags != MOCK_TCPCI_I2C_ADDR_FLAGS) { + ccprints("ERROR: wrong I2C address 0x%x", slave_addr_flags); + return EC_ERROR_UNKNOWN; + } + + if (out_size == 0) { + ccprints("ERROR: out_size == 0"); + return EC_ERROR_UNKNOWN; + } + reg = tcpci_regs + *out; + if (*out >= ARRAY_SIZE(tcpci_regs) || reg->size == 0) { + ccprints("ERROR: unknown reg 0x%x", *out); + return EC_ERROR_UNKNOWN; + } + if (out_size == 1) { + if (in_size != reg->size) { + ccprints("ERROR: in_size != %d", reg->size); + return EC_ERROR_UNKNOWN; + } + ccprints("%s TCPCI read %s = 0x%x", + task_get_name(task_get_current()), + reg->name, reg->value); + if (reg->size == 1) + in[0] = reg->value; + else if (reg->size == 2) { + in[0] = reg->value; + in[1] = reg->value >> 8; + } + } else { + uint16_t value = 0; + + if (in_size != 0) { + ccprints("ERROR: in_size != 0"); + return EC_ERROR_UNKNOWN; + } + if (out_size != reg->size + 1) { + ccprints("ERROR: out_size != %d", reg->size + 1); + return EC_ERROR_UNKNOWN; + } + if (reg->size == 1) + value = out[1]; + else if (reg->size == 2) + value = out[1] + (out[2] << 8); + ccprints("%s TCPCI write %s = 0x%x", + task_get_name(task_get_current()), + reg->name, value); + reg->value = value; + } + return EC_SUCCESS; +} +DECLARE_TEST_I2C_XFER(tcpci_i2c_xfer); |