4740f73fe5
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Acked-by: David Brown <davidb@codeaurora.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
635 lines
12 KiB
C
635 lines
12 KiB
C
/*
|
|
* Copyright (C) ST-Ericsson SA 2010
|
|
*
|
|
* Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson.
|
|
* License Terms: GNU General Public License v2
|
|
*/
|
|
|
|
#include <linux/seq_file.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/module.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/mfd/abx500.h>
|
|
#include <linux/mfd/abx500/ab8500.h>
|
|
|
|
static u32 debug_bank;
|
|
static u32 debug_address;
|
|
|
|
/**
|
|
* struct ab8500_reg_range
|
|
* @first: the first address of the range
|
|
* @last: the last address of the range
|
|
* @perm: access permissions for the range
|
|
*/
|
|
struct ab8500_reg_range {
|
|
u8 first;
|
|
u8 last;
|
|
u8 perm;
|
|
};
|
|
|
|
/**
|
|
* struct ab8500_prcmu_ranges
|
|
* @num_ranges: the number of ranges in the list
|
|
* @bankid: bank identifier
|
|
* @range: the list of register ranges
|
|
*/
|
|
struct ab8500_prcmu_ranges {
|
|
u8 num_ranges;
|
|
u8 bankid;
|
|
const struct ab8500_reg_range *range;
|
|
};
|
|
|
|
#define AB8500_NAME_STRING "ab8500"
|
|
#define AB8500_NUM_BANKS 22
|
|
|
|
#define AB8500_REV_REG 0x80
|
|
|
|
static struct ab8500_prcmu_ranges debug_ranges[AB8500_NUM_BANKS] = {
|
|
[0x0] = {
|
|
.num_ranges = 0,
|
|
.range = 0,
|
|
},
|
|
[AB8500_SYS_CTRL1_BLOCK] = {
|
|
.num_ranges = 3,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x02,
|
|
},
|
|
{
|
|
.first = 0x42,
|
|
.last = 0x42,
|
|
},
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x81,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_SYS_CTRL2_BLOCK] = {
|
|
.num_ranges = 4,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x0D,
|
|
},
|
|
{
|
|
.first = 0x0F,
|
|
.last = 0x17,
|
|
},
|
|
{
|
|
.first = 0x30,
|
|
.last = 0x30,
|
|
},
|
|
{
|
|
.first = 0x32,
|
|
.last = 0x33,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_REGU_CTRL1] = {
|
|
.num_ranges = 3,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x00,
|
|
},
|
|
{
|
|
.first = 0x03,
|
|
.last = 0x10,
|
|
},
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x84,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_REGU_CTRL2] = {
|
|
.num_ranges = 5,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x15,
|
|
},
|
|
{
|
|
.first = 0x17,
|
|
.last = 0x19,
|
|
},
|
|
{
|
|
.first = 0x1B,
|
|
.last = 0x1D,
|
|
},
|
|
{
|
|
.first = 0x1F,
|
|
.last = 0x22,
|
|
},
|
|
{
|
|
.first = 0x40,
|
|
.last = 0x44,
|
|
},
|
|
/* 0x80-0x8B is SIM registers and should
|
|
* not be accessed from here */
|
|
},
|
|
},
|
|
[AB8500_USB] = {
|
|
.num_ranges = 2,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x83,
|
|
},
|
|
{
|
|
.first = 0x87,
|
|
.last = 0x8A,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_TVOUT] = {
|
|
.num_ranges = 9,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x12,
|
|
},
|
|
{
|
|
.first = 0x15,
|
|
.last = 0x17,
|
|
},
|
|
{
|
|
.first = 0x19,
|
|
.last = 0x21,
|
|
},
|
|
{
|
|
.first = 0x27,
|
|
.last = 0x2C,
|
|
},
|
|
{
|
|
.first = 0x41,
|
|
.last = 0x41,
|
|
},
|
|
{
|
|
.first = 0x45,
|
|
.last = 0x5B,
|
|
},
|
|
{
|
|
.first = 0x5D,
|
|
.last = 0x5D,
|
|
},
|
|
{
|
|
.first = 0x69,
|
|
.last = 0x69,
|
|
},
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x81,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_DBI] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[AB8500_ECI_AV_ACC] = {
|
|
.num_ranges = 1,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x82,
|
|
},
|
|
},
|
|
},
|
|
[0x9] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[AB8500_GPADC] = {
|
|
.num_ranges = 1,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x08,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_CHARGER] = {
|
|
.num_ranges = 8,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x03,
|
|
},
|
|
{
|
|
.first = 0x05,
|
|
.last = 0x05,
|
|
},
|
|
{
|
|
.first = 0x40,
|
|
.last = 0x40,
|
|
},
|
|
{
|
|
.first = 0x42,
|
|
.last = 0x42,
|
|
},
|
|
{
|
|
.first = 0x44,
|
|
.last = 0x44,
|
|
},
|
|
{
|
|
.first = 0x50,
|
|
.last = 0x55,
|
|
},
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x82,
|
|
},
|
|
{
|
|
.first = 0xC0,
|
|
.last = 0xC2,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_GAS_GAUGE] = {
|
|
.num_ranges = 3,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x00,
|
|
},
|
|
{
|
|
.first = 0x07,
|
|
.last = 0x0A,
|
|
},
|
|
{
|
|
.first = 0x10,
|
|
.last = 0x14,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_AUDIO] = {
|
|
.num_ranges = 1,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x6F,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_INTERRUPT] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[AB8500_RTC] = {
|
|
.num_ranges = 1,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x0F,
|
|
},
|
|
},
|
|
},
|
|
[AB8500_MISC] = {
|
|
.num_ranges = 8,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x00,
|
|
.last = 0x05,
|
|
},
|
|
{
|
|
.first = 0x10,
|
|
.last = 0x15,
|
|
},
|
|
{
|
|
.first = 0x20,
|
|
.last = 0x25,
|
|
},
|
|
{
|
|
.first = 0x30,
|
|
.last = 0x35,
|
|
},
|
|
{
|
|
.first = 0x40,
|
|
.last = 0x45,
|
|
},
|
|
{
|
|
.first = 0x50,
|
|
.last = 0x50,
|
|
},
|
|
{
|
|
.first = 0x60,
|
|
.last = 0x67,
|
|
},
|
|
{
|
|
.first = 0x80,
|
|
.last = 0x80,
|
|
},
|
|
},
|
|
},
|
|
[0x11] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[0x12] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[0x13] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[0x14] = {
|
|
.num_ranges = 0,
|
|
.range = NULL,
|
|
},
|
|
[AB8500_OTP_EMUL] = {
|
|
.num_ranges = 1,
|
|
.range = (struct ab8500_reg_range[]) {
|
|
{
|
|
.first = 0x01,
|
|
.last = 0x0F,
|
|
},
|
|
},
|
|
},
|
|
};
|
|
|
|
static int ab8500_registers_print(struct seq_file *s, void *p)
|
|
{
|
|
struct device *dev = s->private;
|
|
unsigned int i;
|
|
u32 bank = debug_bank;
|
|
|
|
seq_printf(s, AB8500_NAME_STRING " register values:\n");
|
|
|
|
seq_printf(s, " bank %u:\n", bank);
|
|
for (i = 0; i < debug_ranges[bank].num_ranges; i++) {
|
|
u32 reg;
|
|
|
|
for (reg = debug_ranges[bank].range[i].first;
|
|
reg <= debug_ranges[bank].range[i].last;
|
|
reg++) {
|
|
u8 value;
|
|
int err;
|
|
|
|
err = abx500_get_register_interruptible(dev,
|
|
(u8)bank, (u8)reg, &value);
|
|
if (err < 0) {
|
|
dev_err(dev, "ab->read fail %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
err = seq_printf(s, " [%u/0x%02X]: 0x%02X\n", bank,
|
|
reg, value);
|
|
if (err < 0) {
|
|
dev_err(dev, "seq_printf overflow\n");
|
|
/* Error is not returned here since
|
|
* the output is wanted in any case */
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ab8500_registers_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab8500_registers_print, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations ab8500_registers_fops = {
|
|
.open = ab8500_registers_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int ab8500_bank_print(struct seq_file *s, void *p)
|
|
{
|
|
return seq_printf(s, "%d\n", debug_bank);
|
|
}
|
|
|
|
static int ab8500_bank_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab8500_bank_print, inode->i_private);
|
|
}
|
|
|
|
static ssize_t ab8500_bank_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct device *dev = ((struct seq_file *)(file->private_data))->private;
|
|
unsigned long user_bank;
|
|
int err;
|
|
|
|
/* Get userspace string and assure termination */
|
|
err = kstrtoul_from_user(user_buf, count, 0, &user_bank);
|
|
if (err)
|
|
return err;
|
|
|
|
if (user_bank >= AB8500_NUM_BANKS) {
|
|
dev_err(dev, "debugfs error input > number of banks\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
debug_bank = user_bank;
|
|
|
|
return count;
|
|
}
|
|
|
|
static int ab8500_address_print(struct seq_file *s, void *p)
|
|
{
|
|
return seq_printf(s, "0x%02X\n", debug_address);
|
|
}
|
|
|
|
static int ab8500_address_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab8500_address_print, inode->i_private);
|
|
}
|
|
|
|
static ssize_t ab8500_address_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct device *dev = ((struct seq_file *)(file->private_data))->private;
|
|
unsigned long user_address;
|
|
int err;
|
|
|
|
/* Get userspace string and assure termination */
|
|
err = kstrtoul_from_user(user_buf, count, 0, &user_address);
|
|
if (err)
|
|
return err;
|
|
|
|
if (user_address > 0xff) {
|
|
dev_err(dev, "debugfs error input > 0xff\n");
|
|
return -EINVAL;
|
|
}
|
|
debug_address = user_address;
|
|
return count;
|
|
}
|
|
|
|
static int ab8500_val_print(struct seq_file *s, void *p)
|
|
{
|
|
struct device *dev = s->private;
|
|
int ret;
|
|
u8 regvalue;
|
|
|
|
ret = abx500_get_register_interruptible(dev,
|
|
(u8)debug_bank, (u8)debug_address, ®value);
|
|
if (ret < 0) {
|
|
dev_err(dev, "abx500_get_reg fail %d, %d\n",
|
|
ret, __LINE__);
|
|
return -EINVAL;
|
|
}
|
|
seq_printf(s, "0x%02X\n", regvalue);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ab8500_val_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ab8500_val_print, inode->i_private);
|
|
}
|
|
|
|
static ssize_t ab8500_val_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct device *dev = ((struct seq_file *)(file->private_data))->private;
|
|
unsigned long user_val;
|
|
int err;
|
|
|
|
/* Get userspace string and assure termination */
|
|
err = kstrtoul_from_user(user_buf, count, 0, &user_val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (user_val > 0xff) {
|
|
dev_err(dev, "debugfs error input > 0xff\n");
|
|
return -EINVAL;
|
|
}
|
|
err = abx500_set_register_interruptible(dev,
|
|
(u8)debug_bank, debug_address, (u8)user_val);
|
|
if (err < 0) {
|
|
printk(KERN_ERR "abx500_set_reg failed %d, %d", err, __LINE__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations ab8500_bank_fops = {
|
|
.open = ab8500_bank_open,
|
|
.write = ab8500_bank_write,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct file_operations ab8500_address_fops = {
|
|
.open = ab8500_address_open,
|
|
.write = ab8500_address_write,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct file_operations ab8500_val_fops = {
|
|
.open = ab8500_val_open,
|
|
.write = ab8500_val_write,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct dentry *ab8500_dir;
|
|
static struct dentry *ab8500_reg_file;
|
|
static struct dentry *ab8500_bank_file;
|
|
static struct dentry *ab8500_address_file;
|
|
static struct dentry *ab8500_val_file;
|
|
|
|
static int ab8500_debug_probe(struct platform_device *plf)
|
|
{
|
|
debug_bank = AB8500_MISC;
|
|
debug_address = AB8500_REV_REG & 0x00FF;
|
|
|
|
ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);
|
|
if (!ab8500_dir)
|
|
goto exit_no_debugfs;
|
|
|
|
ab8500_reg_file = debugfs_create_file("all-bank-registers",
|
|
S_IRUGO, ab8500_dir, &plf->dev, &ab8500_registers_fops);
|
|
if (!ab8500_reg_file)
|
|
goto exit_destroy_dir;
|
|
|
|
ab8500_bank_file = debugfs_create_file("register-bank",
|
|
(S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev, &ab8500_bank_fops);
|
|
if (!ab8500_bank_file)
|
|
goto exit_destroy_reg;
|
|
|
|
ab8500_address_file = debugfs_create_file("register-address",
|
|
(S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev,
|
|
&ab8500_address_fops);
|
|
if (!ab8500_address_file)
|
|
goto exit_destroy_bank;
|
|
|
|
ab8500_val_file = debugfs_create_file("register-value",
|
|
(S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev, &ab8500_val_fops);
|
|
if (!ab8500_val_file)
|
|
goto exit_destroy_address;
|
|
|
|
return 0;
|
|
|
|
exit_destroy_address:
|
|
debugfs_remove(ab8500_address_file);
|
|
exit_destroy_bank:
|
|
debugfs_remove(ab8500_bank_file);
|
|
exit_destroy_reg:
|
|
debugfs_remove(ab8500_reg_file);
|
|
exit_destroy_dir:
|
|
debugfs_remove(ab8500_dir);
|
|
exit_no_debugfs:
|
|
dev_err(&plf->dev, "failed to create debugfs entries.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int ab8500_debug_remove(struct platform_device *plf)
|
|
{
|
|
debugfs_remove(ab8500_val_file);
|
|
debugfs_remove(ab8500_address_file);
|
|
debugfs_remove(ab8500_bank_file);
|
|
debugfs_remove(ab8500_reg_file);
|
|
debugfs_remove(ab8500_dir);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ab8500_debug_driver = {
|
|
.driver = {
|
|
.name = "ab8500-debug",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = ab8500_debug_probe,
|
|
.remove = ab8500_debug_remove
|
|
};
|
|
|
|
static int __init ab8500_debug_init(void)
|
|
{
|
|
return platform_driver_register(&ab8500_debug_driver);
|
|
}
|
|
|
|
static void __exit ab8500_debug_exit(void)
|
|
{
|
|
platform_driver_unregister(&ab8500_debug_driver);
|
|
}
|
|
subsys_initcall(ab8500_debug_init);
|
|
module_exit(ab8500_debug_exit);
|
|
|
|
MODULE_AUTHOR("Mattias WALLIN <mattias.wallin@stericsson.com");
|
|
MODULE_DESCRIPTION("AB8500 DEBUG");
|
|
MODULE_LICENSE("GPL v2");
|