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Commit 94be70d4 authored by Linus Walleij's avatar Linus Walleij Committed by Samuel Ortiz
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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: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent b7ddac53
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Showing with 941 additions and 890 deletions
drivers/mfd/Kconfig
View file @ 94be70d4
...@@ -572,6 +572,14 @@ config AB5500_CORE ...@@ -572,6 +572,14 @@ config AB5500_CORE
chip. This connects to the db5500 chip via the I2C bus via PRCMU. chip. This connects to the db5500 chip via the I2C bus via PRCMU.
This chip embeds various other multimedia funtionalities as well. This chip embeds various other multimedia funtionalities as well.
config AB5500_DEBUG
bool "Enable debug info via debugfs"
depends on AB5500_CORE && DEBUG_FS
default y if DEBUG_FS
help
Select this option if you want debug information from the AB5500
using the debug filesystem, debugfs.
config AB8500_CORE config AB8500_CORE
bool "ST-Ericsson AB8500 Mixed Signal Power Management chip" bool "ST-Ericsson AB8500 Mixed Signal Power Management chip"
depends on GENERIC_HARDIRQS && ABX500_CORE depends on GENERIC_HARDIRQS && ABX500_CORE
......
drivers/mfd/Makefile
View file @ 94be70d4
...@@ -81,6 +81,7 @@ obj-$(CONFIG_AB3100_CORE) += ab3100-core.o ...@@ -81,6 +81,7 @@ obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_AB3550_CORE) += ab3550-core.o obj-$(CONFIG_AB3550_CORE) += ab3550-core.o
obj-$(CONFIG_AB5500_CORE) += ab5500-core.o obj-$(CONFIG_AB5500_CORE) += ab5500-core.o
obj-$(CONFIG_AB5500_DEBUG) += ab5500-debugfs.o
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o
obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
......
drivers/mfd/ab5500-core.c
View file @ 94be70d4
...@@ -21,9 +21,6 @@ ...@@ -21,9 +21,6 @@
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/random.h> #include <linux/random.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/mfd/ab5500/ab5500.h> #include <linux/mfd/ab5500/ab5500.h>
#include <linux/mfd/abx500.h> #include <linux/mfd/abx500.h>
#include <linux/list.h> #include <linux/list.h>
...@@ -33,87 +30,13 @@ ...@@ -33,87 +30,13 @@
#include <linux/version.h> #include <linux/version.h>
#include <linux/mfd/db5500-prcmu.h> #include <linux/mfd/db5500-prcmu.h>
#include "ab5500-core.h"
#include "ab5500-debugfs.h"
#define AB5500_NUM_EVENT_REG 23 #define AB5500_NUM_EVENT_REG 23
#define AB5500_IT_LATCH0_REG 0x40 #define AB5500_IT_LATCH0_REG 0x40
#define AB5500_IT_MASK0_REG 0x60 #define AB5500_IT_MASK0_REG 0x60
/* Read/write operation values. */
#define AB5500_PERM_RD (0x01)
#define AB5500_PERM_WR (0x02)
/* Read/write permissions. */
#define AB5500_PERM_RO (AB5500_PERM_RD)
#define AB5500_PERM_RW (AB5500_PERM_RD | AB5500_PERM_WR)
#define AB5500_MASK_BASE (0x60)
#define AB5500_MASK_END (0x79)
#define AB5500_CHIP_ID (0x20)
/**
* struct ab5500_bank
* @slave_addr: I2C slave_addr found in AB5500 specification
* @name: Documentation name of the bank. For reference
*/
struct ab5500_bank {
u8 slave_addr;
const char *name;
};
static const struct ab5500_bank bankinfo[AB5500_NUM_BANKS] = {
[AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP] = {
AB5500_ADDR_VIT_IO_I2C_CLK_TST_OTP, "VIT_IO_I2C_CLK_TST_OTP"},
[AB5500_BANK_VDDDIG_IO_I2C_CLK_TST] = {
AB5500_ADDR_VDDDIG_IO_I2C_CLK_TST, "VDDDIG_IO_I2C_CLK_TST"},
[AB5500_BANK_VDENC] = {AB5500_ADDR_VDENC, "VDENC"},
[AB5500_BANK_SIM_USBSIM] = {AB5500_ADDR_SIM_USBSIM, "SIM_USBSIM"},
[AB5500_BANK_LED] = {AB5500_ADDR_LED, "LED"},
[AB5500_BANK_ADC] = {AB5500_ADDR_ADC, "ADC"},
[AB5500_BANK_RTC] = {AB5500_ADDR_RTC, "RTC"},
[AB5500_BANK_STARTUP] = {AB5500_ADDR_STARTUP, "STARTUP"},
[AB5500_BANK_DBI_ECI] = {AB5500_ADDR_DBI_ECI, "DBI-ECI"},
[AB5500_BANK_CHG] = {AB5500_ADDR_CHG, "CHG"},
[AB5500_BANK_FG_BATTCOM_ACC] = {
AB5500_ADDR_FG_BATTCOM_ACC, "FG_BATCOM_ACC"},
[AB5500_BANK_USB] = {AB5500_ADDR_USB, "USB"},
[AB5500_BANK_IT] = {AB5500_ADDR_IT, "IT"},
[AB5500_BANK_VIBRA] = {AB5500_ADDR_VIBRA, "VIBRA"},
[AB5500_BANK_AUDIO_HEADSETUSB] = {
AB5500_ADDR_AUDIO_HEADSETUSB, "AUDIO_HEADSETUSB"},
};
/**
* struct ab5500_reg_range
* @first: the first address of the range
* @last: the last address of the range
* @perm: access permissions for the range
*/
struct ab5500_reg_range {
u8 first;
u8 last;
u8 perm;
};
/**
* struct ab5500_i2c_ranges
* @count: the number of ranges in the list
* @range: the list of register ranges
*/
struct ab5500_i2c_ranges {
u8 nranges;
u8 bankid;
const struct ab5500_reg_range *range;
};
/**
* struct ab5500_i2c_banks
* @count: the number of ranges in the list
* @range: the list of register ranges
*/
struct ab5500_i2c_banks {
u8 nbanks;
const struct ab5500_i2c_ranges *bank;
};
/* /*
* Permissible register ranges for reading and writing per device and bank. * Permissible register ranges for reading and writing per device and bank.
* *
...@@ -1073,8 +996,9 @@ static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = { ...@@ -1073,8 +996,9 @@ static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = {
/* /*
* Functionality for getting/setting register values. * Functionality for getting/setting register values.
*/ */
static int get_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, int ab5500_get_register_interruptible_raw(struct ab5500 *ab,
u8 *value) u8 bank, u8 reg,
u8 *value)
{ {
int err; int err;
...@@ -1121,7 +1045,7 @@ static int get_register_page_interruptible(struct ab5500 *ab, u8 bank, ...@@ -1121,7 +1045,7 @@ static int get_register_page_interruptible(struct ab5500 *ab, u8 bank,
return err; return err;
} }
static int mask_and_set_register_interruptible(struct ab5500 *ab, u8 bank, int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank,
u8 reg, u8 bitmask, u8 bitvalues) u8 reg, u8 bitmask, u8 bitvalues)
{ {
int err = 0; int err = 0;
...@@ -1158,7 +1082,8 @@ static int mask_and_set_register_interruptible(struct ab5500 *ab, u8 bank, ...@@ -1158,7 +1082,8 @@ static int mask_and_set_register_interruptible(struct ab5500 *ab, u8 bank,
static int static int
set_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, u8 value) set_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, u8 value)
{ {
return mask_and_set_register_interruptible(ab, bank, reg, 0xff, value); return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
0xff, value);
} }
/* /*
...@@ -1261,7 +1186,7 @@ static int ab5500_mask_and_set_register_interruptible(struct device *dev, ...@@ -1261,7 +1186,7 @@ static int ab5500_mask_and_set_register_interruptible(struct device *dev,
return -EINVAL; return -EINVAL;
ab = dev_get_drvdata(dev->parent); ab = dev_get_drvdata(dev->parent);
return mask_and_set_register_interruptible(ab, bank, reg, return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
bitmask, bitvalues); bitmask, bitvalues);
} }
...@@ -1283,7 +1208,7 @@ static int ab5500_get_register_interruptible(struct device *dev, u8 bank, ...@@ -1283,7 +1208,7 @@ static int ab5500_get_register_interruptible(struct device *dev, u8 bank,
return -EINVAL; return -EINVAL;
ab = dev_get_drvdata(dev->parent); ab = dev_get_drvdata(dev->parent);
return get_register_interruptible(ab, bank, reg, value); return ab5500_get_register_interruptible_raw(ab, bank, reg, value);
} }
static int ab5500_get_register_page_interruptible(struct device *dev, u8 bank, static int ab5500_get_register_page_interruptible(struct device *dev, u8 bank,
...@@ -1327,806 +1252,6 @@ static struct abx500_ops ab5500_ops = { ...@@ -1327,806 +1252,6 @@ static struct abx500_ops ab5500_ops = {
.startup_irq_enabled = NULL, .startup_irq_enabled = NULL,
}; };
#ifdef CONFIG_DEBUG_FS
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 = get_register_interruptible(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 = get_register_interruptible(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 = mask_and_set_register_interruptible(
ab, (u8)ab->debug_bank,
(u8)ab->debug_address, 0xFF, (u8)user_val);
if (err)
return -EINVAL;
get_register_interruptible(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;
static inline void 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;
}
static inline void 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);
}
#else /* !CONFIG_DEBUG_FS */
static inline void ab5500_setup_debugfs(struct ab5500 *ab)
{
}
static inline void ab5500_remove_debugfs(void)
{
}
#endif
/* /*
* ab5500_setup : Basic set-up, datastructure creation/destruction * ab5500_setup : Basic set-up, datastructure creation/destruction
* and I2C interface.This sets up a default config * and I2C interface.This sets up a default config
...@@ -2142,7 +1267,7 @@ static int __init ab5500_setup(struct ab5500 *ab, ...@@ -2142,7 +1267,7 @@ static int __init ab5500_setup(struct ab5500 *ab,
int i; int i;
for (i = 0; i < size; i++) { for (i = 0; i < size; i++) {
err = mask_and_set_register_interruptible(ab, err = ab5500_mask_and_set_register_interruptible_raw(ab,
settings[i].bank, settings[i].bank,
settings[i].reg, settings[i].reg,
0xFF, settings[i].setting); 0xFF, settings[i].setting);
...@@ -2205,8 +1330,9 @@ static int __init ab5500_probe(struct platform_device *pdev) ...@@ -2205,8 +1330,9 @@ static int __init ab5500_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ab); platform_set_drvdata(pdev, ab);
/* Read chip ID register */ /* Read chip ID register */
err = get_register_interruptible(ab, AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP, err = ab5500_get_register_interruptible_raw(ab,
AB5500_CHIP_ID, &ab->chip_id); AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
AB5500_CHIP_ID, &ab->chip_id);
if (err) { if (err) {
dev_err(&pdev->dev, "could not communicate with the analog " dev_err(&pdev->dev, "could not communicate with the analog "
"baseband chip\n"); "baseband chip\n");
...@@ -2233,7 +1359,8 @@ static int __init ab5500_probe(struct platform_device *pdev) ...@@ -2233,7 +1359,8 @@ static int __init ab5500_probe(struct platform_device *pdev)
u8 maskreg = AB5500_IT_MASK0_REG + i; u8 maskreg = AB5500_IT_MASK0_REG + i;
u8 val; u8 val;
get_register_interruptible(ab, AB5500_BANK_IT, latchreg, &val); ab5500_get_register_interruptible_raw(ab, AB5500_BANK_IT,
latchreg, &val);
set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff); set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff);
ab->mask[i] = ab->oldmask[i] = 0xff; ab->mask[i] = ab->oldmask[i] = 0xff;
} }
......
drivers/mfd/ab5500-core.h 0 → 100644
View file @ 94be70d4
/*
* Copyright (C) 2011 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Shared definitions and data structures for the AB5500 MFD driver
*/
/* Read/write operation values. */
#define AB5500_PERM_RD (0x01)
#define AB5500_PERM_WR (0x02)
/* Read/write permissions. */
#define AB5500_PERM_RO (AB5500_PERM_RD)
#define AB5500_PERM_RW (AB5500_PERM_RD | AB5500_PERM_WR)
#define AB5500_MASK_BASE (0x60)
#define AB5500_MASK_END (0x79)
#define AB5500_CHIP_ID (0x20)
/**
* struct ab5500_reg_range
* @first: the first address of the range
* @last: the last address of the range
* @perm: access permissions for the range
*/
struct ab5500_reg_range {
u8 first;
u8 last;
u8 perm;
};
/**
* struct ab5500_i2c_ranges
* @count: the number of ranges in the list
* @range: the list of register ranges
*/
struct ab5500_i2c_ranges {
u8 nranges;
u8 bankid;
const struct ab5500_reg_range *range;
};
/**
* struct ab5500_i2c_banks
* @count: the number of ranges in the list
* @range: the list of register ranges
*/
struct ab5500_i2c_banks {
u8 nbanks;
const struct ab5500_i2c_ranges *bank;
};
/**
* struct ab5500_bank
* @slave_addr: I2C slave_addr found in AB5500 specification
* @name: Documentation name of the bank. For reference
*/
struct ab5500_bank {
u8 slave_addr;
const char *name;
};
static const struct ab5500_bank bankinfo[AB5500_NUM_BANKS] = {
[AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP] = {
AB5500_ADDR_VIT_IO_I2C_CLK_TST_OTP, "VIT_IO_I2C_CLK_TST_OTP"},
[AB5500_BANK_VDDDIG_IO_I2C_CLK_TST] = {
AB5500_ADDR_VDDDIG_IO_I2C_CLK_TST, "VDDDIG_IO_I2C_CLK_TST"},
[AB5500_BANK_VDENC] = {AB5500_ADDR_VDENC, "VDENC"},
[AB5500_BANK_SIM_USBSIM] = {AB5500_ADDR_SIM_USBSIM, "SIM_USBSIM"},
[AB5500_BANK_LED] = {AB5500_ADDR_LED, "LED"},
[AB5500_BANK_ADC] = {AB5500_ADDR_ADC, "ADC"},
[AB5500_BANK_RTC] = {AB5500_ADDR_RTC, "RTC"},
[AB5500_BANK_STARTUP] = {AB5500_ADDR_STARTUP, "STARTUP"},
[AB5500_BANK_DBI_ECI] = {AB5500_ADDR_DBI_ECI, "DBI-ECI"},
[AB5500_BANK_CHG] = {AB5500_ADDR_CHG, "CHG"},
[AB5500_BANK_FG_BATTCOM_ACC] = {
AB5500_ADDR_FG_BATTCOM_ACC, "FG_BATCOM_ACC"},
[AB5500_BANK_USB] = {AB5500_ADDR_USB, "USB"},
[AB5500_BANK_IT] = {AB5500_ADDR_IT, "IT"},
[AB5500_BANK_VIBRA] = {AB5500_ADDR_VIBRA, "VIBRA"},
[AB5500_BANK_AUDIO_HEADSETUSB] = {
AB5500_ADDR_AUDIO_HEADSETUSB, "AUDIO_HEADSETUSB"},
};
int ab5500_get_register_interruptible_raw(struct ab5500 *ab, u8 bank, u8 reg,
u8 *value);
int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank,
u8 reg, u8 bitmask, u8 bitvalues);
drivers/mfd/ab5500-debugfs.c 0 → 100644
View file @ 94be70d4
/*
* 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);
}
drivers/mfd/ab5500-debugfs.h 0 → 100644
View file @ 94be70d4
/*
* Copyright (C) 2011 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Debugfs interface to the AB5500 core driver
*/
#ifdef CONFIG_DEBUG_FS
void ab5500_setup_debugfs(struct ab5500 *ab);
void ab5500_remove_debugfs(void);
#else /* !CONFIG_DEBUG_FS */
static inline void ab5500_setup_debugfs(struct ab5500 *ab)
{
}
static inline void ab5500_remove_debugfs(void)
{
}
#endif
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