diff options
Diffstat (limited to 'driver/mp4245.c')
| -rw-r--r-- | driver/mp4245.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/driver/mp4245.c b/driver/mp4245.c deleted file mode 100644 index 2b38e5c9e9..0000000000 --- a/driver/mp4245.c +++ /dev/null @@ -1,214 +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. - */ - -/* MPS MP4245 Buck-Boost converter driver. */ - -#include "common.h" -#include "console.h" -#include "i2c.h" -#include "mp4245.h" -#include "util.h" - - -static int mp4245_reg16_write(int offset, int data) -{ - return i2c_write16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, offset, - data); -} - -int mp4245_set_voltage_out(int desired_mv) -{ - int vout; - - /* - * For a desired voltage output Vdes, Vout = Vdes * 1024. This means - * there are 10 fractional and 6 integer bits. Vdes is stored in in mV - * so this scaling to mV must also be accounted for. - * - * VOUT_COMMAND = (Vdes (mV) * 1024 / 1000) / 1024 - */ - vout = (desired_mv * MP4245_VOUT_FROM_MV + (MP4245_VOUT_1V >> 1)) - / MP4245_VOUT_1V; - - return mp4245_reg16_write(MP4245_CMD_VOUT_COMMAND, vout); -} - -int mp4245_set_current_lim(int desired_ma) -{ - int limit; - - /* Current limit is stored as number of 50 mA steps */ - limit = (desired_ma + (MP4245_ILIM_STEP_MA / 2)) / MP4245_ILIM_STEP_MA; - - return mp4245_reg16_write(MP4245_CMD_MFR_CURRENT_LIM, limit); -} - -int mp4245_votlage_out_enable(int enable) -{ - int cmd_val = enable ? MP4245_CMD_OPERATION_ON : 0; - - return i2c_write8(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_OPERATION, cmd_val); -} - -int mp3245_get_vbus(int *mv, int *ma) -{ - int vbus = 0; - int ibus = 0; - int rv; - - /* Get Vbus/Ibus raw measurements */ - rv = i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_READ_VOUT, &vbus); - rv |= i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_READ_IOUT, &ibus); - - if (rv == EC_SUCCESS) { - /* Convert Vbus/Ibus to mV/mA */ - vbus = MP4245_VOUT_TO_MV(vbus); - ibus = MP4245_IOUT_TO_MA(ibus); - } - - *mv = vbus; - *ma = ibus; - - return rv; -} - -struct mp4245_info { - uint8_t cmd; - uint8_t len; -}; - -static struct mp4245_info mp4245_cmds[] = { - {MP4245_CMD_OPERATION, 1}, - {MP4245_CMD_CLEAR_FAULTS, 1}, - {MP4245_CMD_WRITE_PROTECT, 1}, - {MP4245_CMD_STORE_USER_ALL, 1}, - {MP4245_CMD_RESTORE_USER_ALL, 1}, - {MP4245_CMD_VOUT_MODE, 1}, - {MP4245_CMD_VOUT_COMMAND, 2}, - {MP4245_CMD_VOUT_SCALE_LOOP, 2}, - {MP4245_CMD_STATUS_BYTE, 1}, - {MP4245_CMD_STATUS_WORD, 2}, - {MP4245_CMD_STATUS_VOUT, 1}, - {MP4245_CMD_STATUS_INPUT, 1}, - {MP4245_CMD_STATUS_TEMP, 1}, - {MP4245_CMD_STATUS_CML, 1}, - {MP4245_CMD_READ_VIN, 2}, - {MP4245_CMD_READ_VOUT, 2}, - {MP4245_CMD_READ_IOUT, 2}, - {MP4245_CMD_READ_TEMP, 2}, - {MP4245_CMD_MFR_MODE_CTRL, 1}, - {MP4245_CMD_MFR_CURRENT_LIM, 1}, - {MP4245_CMD_MFR_LINE_DROP, 1}, - {MP4245_CMD_MFR_OT_FAULT_LIM, 1}, - {MP4245_CMD_MFR_OT_WARN_LIM, 1}, - {MP4245_CMD_MFR_CRC_ERROR, 1}, - {MP4245_CMD_MFF_MTP_CFG_CODE, 1}, - {MP4245_CMD_MFR_MTP_REV_NUM, 1}, - {MP4245_CMD_MFR_STATUS_MASK, 1}, -}; - -static void mp4245_dump_reg(void) -{ - int i; - int val; - int rv; - - for (i = 0; i < ARRAY_SIZE(mp4245_cmds); i++) { - if (mp4245_cmds[i].len == 1) { - rv = i2c_read8(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - mp4245_cmds[i].cmd, &val); - } else { - rv = i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - mp4245_cmds[i].cmd, &val); - } - - if (!rv) - ccprintf("[%02x]:\t%04x\n", mp4245_cmds[i].cmd, val); - } -} - -void mp4245_get_status(void) -{ - int status; - int on; - int vbus; - int ibus; - int ilim; - int vout; - - /* Get Operation register */ - i2c_read8(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_OPERATION, &on); - /* Vbus on/off is bit 7 */ - on >>= 7; - - /* Get status word */ - i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_STATUS_WORD, &status); - - /* Get Vbus measurement */ - i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_READ_VOUT, &vbus); - vbus = MP4245_VOUT_TO_MV(vbus); - - /* Get Ibus measurement */ - i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_READ_IOUT, &ibus); - ibus = MP4245_IOUT_TO_MA(ibus); - - /* Get Vout command (sets Vbus level) */ - i2c_read16(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_VOUT_COMMAND, &vout); - vout = MP4245_VOUT_TO_MV(vout); - - /* Get Input current limit */ - i2c_read8(I2C_PORT_MP4245, MP4245_I2C_ADDR_FLAGS, - MP4245_CMD_MFR_CURRENT_LIM, &ilim); - ilim *= MP4245_ILIM_STEP_MA; - - ccprintf("mp4245 Vbus %s:\n", on ? "On" : "Off"); - ccprintf("\tstatus = 0x%04x\n", status); - ccprintf("\tVout = %d mV, Vbus = %d mV\n", vout, vbus); - ccprintf("\tIlim = %d mA, Ibus = %d mA\n", ilim, ibus); -} - -static int command_mp4245(int argc, char **argv) -{ - char *e; - int val; - - if (argc < 2) - return EC_ERROR_PARAM_COUNT; - - if (!strcasecmp(argv[1], "info")) { - mp4245_get_status(); - } else if (!strcasecmp(argv[1], "dump")) { - mp4245_dump_reg(); - } else if (!strcasecmp(argv[1], "vbus")) { - if (argc < 3) - return EC_ERROR_PARAM_COUNT; - val = strtoi(argv[2], &e, 10); - /* If value out of bounds, turn off */ - if (val < 0 || val > 20) { - return EC_ERROR_PARAM2; - } - if (val == 0) { - mp4245_votlage_out_enable(0); - } else { - mp4245_set_voltage_out(val * 1000); - mp4245_votlage_out_enable(1); - } - } else { - return EC_ERROR_PARAM1; - } - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(mp4245, command_mp4245, - "<info|dump|vbus|ilim>", - "Turn on/off|set vbus."); - |