+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- */
-
-/* Power-One ZM7300 DPM */
-#include "zm7300.h"
-#include <log.h>
-
-#define DPM_WP 0x96
-#define WRP_OPCODE 0x01
-#define WRM_OPCODE 0x02
-#define RRP_OPCODE 0x11
-
-#define DPM_SUCCESS 0x01
-#define DPM_EXEC_FAIL 0x00
-
-static const uint16_t hex_to_1_10mv[] = {
- 5000,
- 5125,
- 5250,
- 5375,
- 5500,
- 5625,
- 5750,
- 5875,
- 6000,
- 6125,
- 6250,
- 6375,
- 6500,
- 6625,
- 6750,
- 6875,
- 7000,
- 7125,
- 7250,
- 7375,
- 7500,
- 7625,
- 7750,
- 7875,
- 8000,
- 8125,
- 8250,
- 8375,
- 8500,
- 8625,
- 8750,
- 8875,
- 9000,
- 9125,
- 9250,
- 9375,
- 9500, /* 0.95mV */
- 9625,
- 9750,
- 9875,
- 10000, /* 1.0V */
- 10125,
- 10250,
- 10375,
- 10500,
- 10625,
- 10750,
- 10875,
- 11000,
- 11125,
- 11250,
- 11375,
- 11500,
- 11625,
- 11750,
- 11875,
- 12000,
- 12125,
- 12250,
- 12375,
- 0, /* reserved */
-};
-
-
-/* Read Data d from Register r of POL p */
-u8 dpm_rrp(uchar r)
-{
- u8 ret[5];
-
- ret[0] = RRP_OPCODE;
- /* POL is 0 */
- ret[1] = 0;
- ret[2] = r;
- i2c_read(I2C_DPM_ADDR, 0, -3, ret, 2);
- if (ret[1] == DPM_SUCCESS) { /* the DPM returned success as status */
- debug("RRP_OPCODE returned success data is %x\n", ret[0]);
- return ret[0];
- } else {
- return -1;
- }
-}
-
-/* Write Data d into DPM register r (RAM) */
-int dpm_wrm(u8 r, u8 d)
-{
- u8 ret[5];
-
- ret[0] = WRM_OPCODE;
- ret[1] = r;
- ret[2] = d;
- i2c_read(I2C_DPM_ADDR, 0, -3, ret, 1);
- if (ret[0] == DPM_SUCCESS) { /* the DPM returned success as status */
- debug("WRM_OPCODE returned success data is %x\n", ret[0]);
- return ret[0];
- } else {
- return -1;
- }
-}
-
-/* Write Data d into Register r of POL(s) a */
-int dpm_wrp(u8 r, u8 d)
-{
- u8 ret[7];
-
- ret[0] = WRP_OPCODE;
- /* only POL0 is present */
- ret[1] = 0x01;
- ret[2] = 0x00;
- ret[3] = 0x00;
- ret[4] = 0x00;
- ret[5] = r;
- ret[6] = d;
- i2c_read(I2C_DPM_ADDR, 0, -7, ret, 1);
- if (ret[0] == DPM_SUCCESS) { /* the DPM returned success as status */
- debug("WRP_OPCODE returned success data is %x\n", ret[0]);
- return 0;
- } else {
- return -1;
- }
-}
-
-/* Uses the DPM command RRP */
-u8 zm_read(uchar reg)
-{
- return dpm_rrp(reg);
-}
-
-/* ZM_write --
- Steps:
- a. Write data to the register
- b. Read data from register and compare to written value
- c. Return return_code & voltage_read
-*/
-u8 zm_write(u8 reg, u8 data)
-{
- u8 d;
-
- /* write data to register */
- dpm_wrp(reg, data);
-
- /* read register and compare to written value */
- d = dpm_rrp(reg);
- if (d != data) {
- printf("zm_write : Comparison register data failed\n");
- return -1;
- }
-
- return d;
-}
-
-/* zm_write_out_voltage
- * voltage in 1/10 mV
- */
-int zm_write_voltage(int voltage)
-{
- u8 reg = 0x7, vid;
- uint16_t voltage_read;
- u8 ret;
-
- vid = (voltage - 5000) / ZM_STEP;
-
- ret = zm_write(reg, vid);
- if (ret != -1) {
- voltage_read = hex_to_1_10mv[ret];
- debug("voltage set to %dmV\n", voltage_read/10);
- return voltage_read;
- }
- return -1;
-}
-
-/* zm_read_out_voltage
- * voltage in 1/10 mV
- */
-int zm_read_voltage(void)
-{
- u8 reg = 0x7;
- u8 ret;
- int voltage;
-
- ret = zm_read(reg);
- if (ret != -1) {
- voltage = hex_to_1_10mv[ret];
- debug("Voltage read is %dmV\n", voltage/10);
- return voltage;
- } else {
- return -1;
- }
-}
-
-int zm_disable_wp()
-{
- u8 new_wp_value;
-
- /* Disable using Write-Protect register 0x96 */
- new_wp_value = 0x8;
- if ((dpm_wrm(DPM_WP, new_wp_value)) < 0) {
- printf("Disable Write-Protect register failed\n");
- return -1;
- }
- return 0;
-}
-
-int zm_enable_wp()
-{
- u8 orig_wp_value;
- orig_wp_value = 0x0;
-
- /* Enable using Write-Protect register 0x96 */
- if ((dpm_wrm(DPM_WP, orig_wp_value)) < 0) {
- printf("Enable Write-Protect register failed\n");
- return -1;
- }
- return 0;
-}