808 lines
15 KiB
C
808 lines
15 KiB
C
/*
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* Copyright (C) 2011 ST-Ericsson
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* License terms: GNU General Public License (GPL) version 2
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* Debugfs support for the AB5500 MFD driver
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*/
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#include <linux/export.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/mfd/ab5500/ab5500.h>
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#include <linux/mfd/abx500.h>
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#include <linux/uaccess.h>
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#include "ab5500-core.h"
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#include "ab5500-debugfs.h"
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static struct ab5500_i2c_ranges ab5500_reg_ranges[AB5500_NUM_BANKS] = {
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[AB5500_BANK_LED] = {
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.bankid = AB5500_BANK_LED,
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.nranges = 1,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x0C,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_ADC] = {
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.bankid = AB5500_BANK_ADC,
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.nranges = 6,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x1F,
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.last = 0x22,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x23,
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.last = 0x24,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x26,
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.last = 0x2D,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x2F,
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.last = 0x34,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x37,
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.last = 0x57,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x58,
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.last = 0x58,
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.perm = AB5500_PERM_RO,
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},
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},
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},
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[AB5500_BANK_RTC] = {
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.bankid = AB5500_BANK_RTC,
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.nranges = 2,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x04,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x06,
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.last = 0x0C,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_STARTUP] = {
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.bankid = AB5500_BANK_STARTUP,
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.nranges = 12,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x01,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x1F,
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.last = 0x1F,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x2E,
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.last = 0x2E,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x2F,
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.last = 0x30,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x50,
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.last = 0x51,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x60,
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.last = 0x61,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x66,
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.last = 0x8A,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x8C,
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.last = 0x96,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0xAA,
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.last = 0xB4,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0xB7,
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.last = 0xBF,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0xC1,
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.last = 0xCA,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0xD3,
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.last = 0xE0,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_DBI_ECI] = {
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.bankid = AB5500_BANK_DBI_ECI,
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.nranges = 3,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x07,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x10,
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.last = 0x10,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x13,
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.last = 0x13,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_CHG] = {
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.bankid = AB5500_BANK_CHG,
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.nranges = 2,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x11,
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.last = 0x11,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x12,
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.last = 0x1B,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_FG_BATTCOM_ACC] = {
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.bankid = AB5500_BANK_FG_BATTCOM_ACC,
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.nranges = 2,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x0B,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x0C,
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.last = 0x10,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_USB] = {
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.bankid = AB5500_BANK_USB,
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.nranges = 12,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x01,
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.last = 0x01,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x80,
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.last = 0x83,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x87,
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.last = 0x8A,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x8B,
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.last = 0x8B,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x91,
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.last = 0x92,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x93,
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.last = 0x93,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x94,
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.last = 0x94,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0xA8,
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.last = 0xB0,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0xB2,
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.last = 0xB2,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0xB4,
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.last = 0xBC,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0xBF,
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.last = 0xBF,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0xC1,
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.last = 0xC5,
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.perm = AB5500_PERM_RO,
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},
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},
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},
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[AB5500_BANK_IT] = {
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.bankid = AB5500_BANK_IT,
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.nranges = 4,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x02,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x20,
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.last = 0x36,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x40,
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.last = 0x56,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x60,
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.last = 0x76,
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.perm = AB5500_PERM_RO,
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},
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},
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},
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[AB5500_BANK_VDDDIG_IO_I2C_CLK_TST] = {
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.bankid = AB5500_BANK_VDDDIG_IO_I2C_CLK_TST,
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.nranges = 7,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x02,
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.last = 0x02,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x12,
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.last = 0x12,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x30,
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.last = 0x34,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x40,
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.last = 0x44,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x50,
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.last = 0x54,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x60,
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.last = 0x64,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x70,
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.last = 0x74,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP] = {
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.bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
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.nranges = 13,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x01,
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.last = 0x01,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x02,
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.last = 0x02,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x0D,
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.last = 0x0F,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x1C,
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.last = 0x1C,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x1E,
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.last = 0x1E,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x20,
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.last = 0x21,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x25,
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.last = 0x25,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x28,
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.last = 0x2A,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x30,
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.last = 0x33,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x40,
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.last = 0x43,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x50,
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.last = 0x53,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x60,
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.last = 0x63,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x70,
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.last = 0x73,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_VIBRA] = {
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.bankid = AB5500_BANK_VIBRA,
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.nranges = 2,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x10,
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.last = 0x13,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0xFE,
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.last = 0xFE,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_AUDIO_HEADSETUSB] = {
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.bankid = AB5500_BANK_AUDIO_HEADSETUSB,
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.nranges = 2,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x48,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0xEB,
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.last = 0xFB,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_SIM_USBSIM] = {
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.bankid = AB5500_BANK_SIM_USBSIM,
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.nranges = 1,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x13,
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.last = 0x19,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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[AB5500_BANK_VDENC] = {
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.bankid = AB5500_BANK_VDENC,
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.nranges = 12,
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.range = (struct ab5500_reg_range[]) {
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{
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.first = 0x00,
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.last = 0x08,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x09,
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.last = 0x09,
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.perm = AB5500_PERM_RO,
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},
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{
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.first = 0x0A,
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.last = 0x12,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x15,
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.last = 0x19,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x1B,
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.last = 0x21,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x27,
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.last = 0x2C,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x41,
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.last = 0x41,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x45,
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.last = 0x5B,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x5D,
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.last = 0x5D,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x69,
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.last = 0x69,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x6C,
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.last = 0x6D,
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.perm = AB5500_PERM_RW,
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},
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{
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.first = 0x80,
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.last = 0x81,
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.perm = AB5500_PERM_RW,
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},
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},
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},
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};
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static int ab5500_registers_print(struct seq_file *s, void *p)
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{
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struct ab5500 *ab = s->private;
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unsigned int i;
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u8 bank = (u8)ab->debug_bank;
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seq_printf(s, "ab5500 register values:\n");
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for (bank = 0; bank < AB5500_NUM_BANKS; bank++) {
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seq_printf(s, " bank %u, %s (0x%x):\n", bank,
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bankinfo[bank].name,
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bankinfo[bank].slave_addr);
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for (i = 0; i < ab5500_reg_ranges[bank].nranges; i++) {
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u8 reg;
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int err;
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for (reg = ab5500_reg_ranges[bank].range[i].first;
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reg <= ab5500_reg_ranges[bank].range[i].last;
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reg++) {
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u8 value;
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err = ab5500_get_register_interruptible_raw(ab,
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bank, reg,
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&value);
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if (err < 0) {
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dev_err(ab->dev, "get_reg failed %d"
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"bank 0x%x reg 0x%x\n",
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err, bank, reg);
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return err;
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}
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err = seq_printf(s, "[%d/0x%02X]: 0x%02X\n",
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bank, reg, value);
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if (err < 0) {
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dev_err(ab->dev,
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"seq_printf overflow\n");
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/*
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* Error is not returned here since
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* the output is wanted in any case
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*/
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return 0;
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}
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}
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}
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}
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return 0;
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}
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static int ab5500_registers_open(struct inode *inode, struct file *file)
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{
|
|
return single_open(file, ab5500_registers_print, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations ab5500_registers_fops = {
|
|
.open = ab5500_registers_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int ab5500_bank_print(struct seq_file *s, void *p)
|
|
{
|
|
struct ab5500 *ab = s->private;
|
|
|
|
seq_printf(s, "%d\n", ab->debug_bank);
|
|
return 0;
|
|
}
|
|
|
|
static int ab5500_bank_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab5500_bank_print, inode->i_private);
|
|
}
|
|
|
|
static ssize_t ab5500_bank_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ab5500 *ab = ((struct seq_file *)(file->private_data))->private;
|
|
char buf[32];
|
|
int buf_size;
|
|
unsigned long user_bank;
|
|
int err;
|
|
|
|
/* Get userspace string and assure termination */
|
|
buf_size = min(count, (sizeof(buf) - 1));
|
|
if (copy_from_user(buf, user_buf, buf_size))
|
|
return -EFAULT;
|
|
buf[buf_size] = 0;
|
|
|
|
err = strict_strtoul(buf, 0, &user_bank);
|
|
if (err)
|
|
return -EINVAL;
|
|
|
|
if (user_bank >= AB5500_NUM_BANKS) {
|
|
dev_err(ab->dev,
|
|
"debugfs error input > number of banks\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ab->debug_bank = user_bank;
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
static int ab5500_address_print(struct seq_file *s, void *p)
|
|
{
|
|
struct ab5500 *ab = s->private;
|
|
|
|
seq_printf(s, "0x%02X\n", ab->debug_address);
|
|
return 0;
|
|
}
|
|
|
|
static int ab5500_address_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab5500_address_print, inode->i_private);
|
|
}
|
|
|
|
static ssize_t ab5500_address_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ab5500 *ab = ((struct seq_file *)(file->private_data))->private;
|
|
char buf[32];
|
|
int buf_size;
|
|
unsigned long user_address;
|
|
int err;
|
|
|
|
/* Get userspace string and assure termination */
|
|
buf_size = min(count, (sizeof(buf) - 1));
|
|
if (copy_from_user(buf, user_buf, buf_size))
|
|
return -EFAULT;
|
|
buf[buf_size] = 0;
|
|
|
|
err = strict_strtoul(buf, 0, &user_address);
|
|
if (err)
|
|
return -EINVAL;
|
|
if (user_address > 0xff) {
|
|
dev_err(ab->dev,
|
|
"debugfs error input > 0xff\n");
|
|
return -EINVAL;
|
|
}
|
|
ab->debug_address = user_address;
|
|
return buf_size;
|
|
}
|
|
|
|
static int ab5500_val_print(struct seq_file *s, void *p)
|
|
{
|
|
struct ab5500 *ab = s->private;
|
|
int err;
|
|
u8 regvalue;
|
|
|
|
err = ab5500_get_register_interruptible_raw(ab, (u8)ab->debug_bank,
|
|
(u8)ab->debug_address, ®value);
|
|
if (err) {
|
|
dev_err(ab->dev, "get_reg failed %d, bank 0x%x"
|
|
", reg 0x%x\n", err, ab->debug_bank,
|
|
ab->debug_address);
|
|
return -EINVAL;
|
|
}
|
|
seq_printf(s, "0x%02X\n", regvalue);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ab5500_val_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab5500_val_print, inode->i_private);
|
|
}
|
|
|
|
static ssize_t ab5500_val_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ab5500 *ab = ((struct seq_file *)(file->private_data))->private;
|
|
char buf[32];
|
|
int buf_size;
|
|
unsigned long user_val;
|
|
int err;
|
|
u8 regvalue;
|
|
|
|
/* Get userspace string and assure termination */
|
|
buf_size = min(count, (sizeof(buf)-1));
|
|
if (copy_from_user(buf, user_buf, buf_size))
|
|
return -EFAULT;
|
|
buf[buf_size] = 0;
|
|
|
|
err = strict_strtoul(buf, 0, &user_val);
|
|
if (err)
|
|
return -EINVAL;
|
|
if (user_val > 0xff) {
|
|
dev_err(ab->dev,
|
|
"debugfs error input > 0xff\n");
|
|
return -EINVAL;
|
|
}
|
|
err = ab5500_mask_and_set_register_interruptible_raw(
|
|
ab, (u8)ab->debug_bank,
|
|
(u8)ab->debug_address, 0xFF, (u8)user_val);
|
|
if (err)
|
|
return -EINVAL;
|
|
|
|
ab5500_get_register_interruptible_raw(ab, (u8)ab->debug_bank,
|
|
(u8)ab->debug_address, ®value);
|
|
if (err)
|
|
return -EINVAL;
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
static const struct file_operations ab5500_bank_fops = {
|
|
.open = ab5500_bank_open,
|
|
.write = ab5500_bank_write,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct file_operations ab5500_address_fops = {
|
|
.open = ab5500_address_open,
|
|
.write = ab5500_address_write,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct file_operations ab5500_val_fops = {
|
|
.open = ab5500_val_open,
|
|
.write = ab5500_val_write,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct dentry *ab5500_dir;
|
|
static struct dentry *ab5500_reg_file;
|
|
static struct dentry *ab5500_bank_file;
|
|
static struct dentry *ab5500_address_file;
|
|
static struct dentry *ab5500_val_file;
|
|
|
|
void __init ab5500_setup_debugfs(struct ab5500 *ab)
|
|
{
|
|
ab->debug_bank = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP;
|
|
ab->debug_address = AB5500_CHIP_ID;
|
|
|
|
ab5500_dir = debugfs_create_dir("ab5500", NULL);
|
|
if (!ab5500_dir)
|
|
goto exit_no_debugfs;
|
|
|
|
ab5500_reg_file = debugfs_create_file("all-bank-registers",
|
|
S_IRUGO, ab5500_dir, ab, &ab5500_registers_fops);
|
|
if (!ab5500_reg_file)
|
|
goto exit_destroy_dir;
|
|
|
|
ab5500_bank_file = debugfs_create_file("register-bank",
|
|
(S_IRUGO | S_IWUGO), ab5500_dir, ab, &ab5500_bank_fops);
|
|
if (!ab5500_bank_file)
|
|
goto exit_destroy_reg;
|
|
|
|
ab5500_address_file = debugfs_create_file("register-address",
|
|
(S_IRUGO | S_IWUGO), ab5500_dir, ab, &ab5500_address_fops);
|
|
if (!ab5500_address_file)
|
|
goto exit_destroy_bank;
|
|
|
|
ab5500_val_file = debugfs_create_file("register-value",
|
|
(S_IRUGO | S_IWUGO), ab5500_dir, ab, &ab5500_val_fops);
|
|
if (!ab5500_val_file)
|
|
goto exit_destroy_address;
|
|
|
|
return;
|
|
|
|
exit_destroy_address:
|
|
debugfs_remove(ab5500_address_file);
|
|
exit_destroy_bank:
|
|
debugfs_remove(ab5500_bank_file);
|
|
exit_destroy_reg:
|
|
debugfs_remove(ab5500_reg_file);
|
|
exit_destroy_dir:
|
|
debugfs_remove(ab5500_dir);
|
|
exit_no_debugfs:
|
|
dev_err(ab->dev, "failed to create debugfs entries.\n");
|
|
return;
|
|
}
|
|
|
|
void __exit ab5500_remove_debugfs(void)
|
|
{
|
|
debugfs_remove(ab5500_val_file);
|
|
debugfs_remove(ab5500_address_file);
|
|
debugfs_remove(ab5500_bank_file);
|
|
debugfs_remove(ab5500_reg_file);
|
|
debugfs_remove(ab5500_dir);
|
|
}
|