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linux/drivers/mfd/ab5500-debugfs.c
Linus Walleij 94be70d4b2 mfd: Break out ab5500 debugfs code 
This breaks the debugfs portions of the AB5500 driver into its own
file. Split off a _raw function to access registers since we don't
want to expose a generically named function globally. Move all
required data structures to a shared ab5500-core.h file.

Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:16 +02:00

806 lines
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/*
* Copyright (C) 2011 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Debugfs support for the AB5500 MFD driver
*/
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/mfd/ab5500/ab5500.h>
#include <linux/mfd/abx500.h>
#include <linux/uaccess.h>
#include "ab5500-core.h"
#include "ab5500-debugfs.h"
static struct ab5500_i2c_ranges ab5500_reg_ranges[AB5500_NUM_BANKS] = {
[AB5500_BANK_LED] = {
.bankid = AB5500_BANK_LED,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x0C,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_ADC] = {
.bankid = AB5500_BANK_ADC,
.nranges = 6,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x1F,
.last = 0x22,
.perm = AB5500_PERM_RO,
},
{
.first = 0x23,
.last = 0x24,
.perm = AB5500_PERM_RW,
},
{
.first = 0x26,
.last = 0x2D,
.perm = AB5500_PERM_RO,
},
{
.first = 0x2F,
.last = 0x34,
.perm = AB5500_PERM_RW,
},
{
.first = 0x37,
.last = 0x57,
.perm = AB5500_PERM_RW,
},
{
.first = 0x58,
.last = 0x58,
.perm = AB5500_PERM_RO,
},
},
},
[AB5500_BANK_RTC] = {
.bankid = AB5500_BANK_RTC,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x04,
.perm = AB5500_PERM_RW,
},
{
.first = 0x06,
.last = 0x0C,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_STARTUP] = {
.bankid = AB5500_BANK_STARTUP,
.nranges = 12,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x01,
.perm = AB5500_PERM_RW,
},
{
.first = 0x1F,
.last = 0x1F,
.perm = AB5500_PERM_RW,
},
{
.first = 0x2E,
.last = 0x2E,
.perm = AB5500_PERM_RO,
},
{
.first = 0x2F,
.last = 0x30,
.perm = AB5500_PERM_RW,
},
{
.first = 0x50,
.last = 0x51,
.perm = AB5500_PERM_RW,
},
{
.first = 0x60,
.last = 0x61,
.perm = AB5500_PERM_RW,
},
{
.first = 0x66,
.last = 0x8A,
.perm = AB5500_PERM_RW,
},
{
.first = 0x8C,
.last = 0x96,
.perm = AB5500_PERM_RW,
},
{
.first = 0xAA,
.last = 0xB4,
.perm = AB5500_PERM_RW,
},
{
.first = 0xB7,
.last = 0xBF,
.perm = AB5500_PERM_RW,
},
{
.first = 0xC1,
.last = 0xCA,
.perm = AB5500_PERM_RW,
},
{
.first = 0xD3,
.last = 0xE0,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_DBI_ECI] = {
.bankid = AB5500_BANK_DBI_ECI,
.nranges = 3,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x07,
.perm = AB5500_PERM_RW,
},
{
.first = 0x10,
.last = 0x10,
.perm = AB5500_PERM_RW,
},
{
.first = 0x13,
.last = 0x13,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_CHG] = {
.bankid = AB5500_BANK_CHG,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x11,
.last = 0x11,
.perm = AB5500_PERM_RO,
},
{
.first = 0x12,
.last = 0x1B,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_FG_BATTCOM_ACC] = {
.bankid = AB5500_BANK_FG_BATTCOM_ACC,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x0B,
.perm = AB5500_PERM_RO,
},
{
.first = 0x0C,
.last = 0x10,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_USB] = {
.bankid = AB5500_BANK_USB,
.nranges = 12,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x01,
.last = 0x01,
.perm = AB5500_PERM_RW,
},
{
.first = 0x80,
.last = 0x83,
.perm = AB5500_PERM_RW,
},
{
.first = 0x87,
.last = 0x8A,
.perm = AB5500_PERM_RW,
},
{
.first = 0x8B,
.last = 0x8B,
.perm = AB5500_PERM_RO,
},
{
.first = 0x91,
.last = 0x92,
.perm = AB5500_PERM_RO,
},
{
.first = 0x93,
.last = 0x93,
.perm = AB5500_PERM_RW,
},
{
.first = 0x94,
.last = 0x94,
.perm = AB5500_PERM_RO,
},
{
.first = 0xA8,
.last = 0xB0,
.perm = AB5500_PERM_RO,
},
{
.first = 0xB2,
.last = 0xB2,
.perm = AB5500_PERM_RO,
},
{
.first = 0xB4,
.last = 0xBC,
.perm = AB5500_PERM_RO,
},
{
.first = 0xBF,
.last = 0xBF,
.perm = AB5500_PERM_RO,
},
{
.first = 0xC1,
.last = 0xC5,
.perm = AB5500_PERM_RO,
},
},
},
[AB5500_BANK_IT] = {
.bankid = AB5500_BANK_IT,
.nranges = 4,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x02,
.perm = AB5500_PERM_RO,
},
{
.first = 0x20,
.last = 0x36,
.perm = AB5500_PERM_RO,
},
{
.first = 0x40,
.last = 0x56,
.perm = AB5500_PERM_RO,
},
{
.first = 0x60,
.last = 0x76,
.perm = AB5500_PERM_RO,
},
},
},
[AB5500_BANK_VDDDIG_IO_I2C_CLK_TST] = {
.bankid = AB5500_BANK_VDDDIG_IO_I2C_CLK_TST,
.nranges = 7,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x02,
.last = 0x02,
.perm = AB5500_PERM_RW,
},
{
.first = 0x12,
.last = 0x12,
.perm = AB5500_PERM_RW,
},
{
.first = 0x30,
.last = 0x34,
.perm = AB5500_PERM_RW,
},
{
.first = 0x40,
.last = 0x44,
.perm = AB5500_PERM_RW,
},
{
.first = 0x50,
.last = 0x54,
.perm = AB5500_PERM_RW,
},
{
.first = 0x60,
.last = 0x64,
.perm = AB5500_PERM_RW,
},
{
.first = 0x70,
.last = 0x74,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP] = {
.bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
.nranges = 13,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x01,
.last = 0x01,
.perm = AB5500_PERM_RW,
},
{
.first = 0x02,
.last = 0x02,
.perm = AB5500_PERM_RO,
},
{
.first = 0x0D,
.last = 0x0F,
.perm = AB5500_PERM_RW,
},
{
.first = 0x1C,
.last = 0x1C,
.perm = AB5500_PERM_RW,
},
{
.first = 0x1E,
.last = 0x1E,
.perm = AB5500_PERM_RW,
},
{
.first = 0x20,
.last = 0x21,
.perm = AB5500_PERM_RW,
},
{
.first = 0x25,
.last = 0x25,
.perm = AB5500_PERM_RW,
},
{
.first = 0x28,
.last = 0x2A,
.perm = AB5500_PERM_RW,
},
{
.first = 0x30,
.last = 0x33,
.perm = AB5500_PERM_RW,
},
{
.first = 0x40,
.last = 0x43,
.perm = AB5500_PERM_RW,
},
{
.first = 0x50,
.last = 0x53,
.perm = AB5500_PERM_RW,
},
{
.first = 0x60,
.last = 0x63,
.perm = AB5500_PERM_RW,
},
{
.first = 0x70,
.last = 0x73,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_VIBRA] = {
.bankid = AB5500_BANK_VIBRA,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x10,
.last = 0x13,
.perm = AB5500_PERM_RW,
},
{
.first = 0xFE,
.last = 0xFE,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_AUDIO_HEADSETUSB] = {
.bankid = AB5500_BANK_AUDIO_HEADSETUSB,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x48,
.perm = AB5500_PERM_RW,
},
{
.first = 0xEB,
.last = 0xFB,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_SIM_USBSIM] = {
.bankid = AB5500_BANK_SIM_USBSIM,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x13,
.last = 0x19,
.perm = AB5500_PERM_RW,
},
},
},
[AB5500_BANK_VDENC] = {
.bankid = AB5500_BANK_VDENC,
.nranges = 12,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x08,
.perm = AB5500_PERM_RW,
},
{
.first = 0x09,
.last = 0x09,
.perm = AB5500_PERM_RO,
},
{
.first = 0x0A,
.last = 0x12,
.perm = AB5500_PERM_RW,
},
{
.first = 0x15,
.last = 0x19,
.perm = AB5500_PERM_RW,
},
{
.first = 0x1B,
.last = 0x21,
.perm = AB5500_PERM_RW,
},
{
.first = 0x27,
.last = 0x2C,
.perm = AB5500_PERM_RW,
},
{
.first = 0x41,
.last = 0x41,
.perm = AB5500_PERM_RW,
},
{
.first = 0x45,
.last = 0x5B,
.perm = AB5500_PERM_RW,
},
{
.first = 0x5D,
.last = 0x5D,
.perm = AB5500_PERM_RW,
},
{
.first = 0x69,
.last = 0x69,
.perm = AB5500_PERM_RW,
},
{
.first = 0x6C,
.last = 0x6D,
.perm = AB5500_PERM_RW,
},
{
.first = 0x80,
.last = 0x81,
.perm = AB5500_PERM_RW,
},
},
},
};
static int ab5500_registers_print(struct seq_file *s, void *p)
{
struct ab5500 *ab = s->private;
unsigned int i;
u8 bank = (u8)ab->debug_bank;
seq_printf(s, "ab5500 register values:\n");
for (bank = 0; bank < AB5500_NUM_BANKS; bank++) {
seq_printf(s, " bank %u, %s (0x%x):\n", bank,
bankinfo[bank].name,
bankinfo[bank].slave_addr);
for (i = 0; i < ab5500_reg_ranges[bank].nranges; i++) {
u8 reg;
int err;
for (reg = ab5500_reg_ranges[bank].range[i].first;
reg <= ab5500_reg_ranges[bank].range[i].last;
reg++) {
u8 value;
err = ab5500_get_register_interruptible_raw(ab,
bank, reg,
&value);
if (err < 0) {
dev_err(ab->dev, "get_reg failed %d"
"bank 0x%x reg 0x%x\n",
err, bank, reg);
return err;
}
err = seq_printf(s, "[%d/0x%02X]: 0x%02X\n",
bank, reg, value);
if (err < 0) {
dev_err(ab->dev,
"seq_printf overflow\n");
/*
* Error is not returned here since
* the output is wanted in any case
*/
return 0;
}
}
}
}
return 0;
}
static int ab5500_registers_open(struct inode *inode, struct file *file)
{
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, &regvalue);
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, &regvalue);
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);
}
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