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linux/drivers/mfd/ab5500-debugfs.c

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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>
2011-09-22 10:22:33 +04:00
/*
* Copyright (C) 2011 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Debugfs support for the AB5500 MFD driver
*/
mfd: fix build failures in recently added ab5500 code These files had implicit dependencies on modular support which now show up as build failures with the module cleanup work merged to mainline. Reported-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-11-07 20:17:04 +04:00
#include <linux/export.h>
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>
2011-09-22 10:22:33 +04:00
#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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