mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 01:56:42 +07:00
bad76991d7
Now the MFD API is Device Tree aware we can use it for platform registration again, even when booting with DT enabled. To aid in Device Node pointer allocation we provide each cell with the associative compatible string. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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 __devinit 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 __devexit 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 = __devexit_p(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");
|