Skip to content

L
linux
Commit 8959e743 authored by Linus Walleij's avatar Linus Walleij Committed by Samuel Ortiz
Browse files
Options

mfd: Delete ab3550 driver 

The AB3550 never passed the prototype stage. Instead it was used
as a precursor to AB5500 for testing basic building blocks used
in that chip, since they had large similarities. Since AB3550 will
not see the light of day in product form and since the prototypes
are no longer used, let's delete the driver and any references to
it.

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 94be70d4
Hide whitespace changes
Inline Side-by-side
Showing with 2 additions and 1499 deletions
arch/arm/mach-u300/i2c.c
View file @ 8959e743
......@@ -256,57 +256,8 @@ static struct ab3100_platform_data ab3100_plf_data = {
};
#endif
#ifdef CONFIG_AB3550_CORE
static struct abx500_init_settings ab3550_init_settings[] = {
{
.bank = 0,
.reg = AB3550_IMR1,
.setting = 0xff
},
{
.bank = 0,
.reg = AB3550_IMR2,
.setting = 0xff
},
{
.bank = 0,
.reg = AB3550_IMR3,
.setting = 0xff
},
{
.bank = 0,
.reg = AB3550_IMR4,
.setting = 0xff
},
{
.bank = 0,
.reg = AB3550_IMR5,
/* The two most significant bits are not used */
.setting = 0x3f
},
};
static struct ab3550_platform_data ab3550_plf_data = {
.irq = {
.base = IRQ_AB3550_BASE,
.count = (IRQ_AB3550_END - IRQ_AB3550_BASE + 1),
},
.dev_data = {
},
.init_settings = ab3550_init_settings,
.init_settings_sz = ARRAY_SIZE(ab3550_init_settings),
};
#endif
static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
#if defined(CONFIG_AB3550_CORE)
{
.type = "ab3550",
.addr = 0x4A,
.irq = IRQ_U300_IRQ0_EXT,
.platform_data = &ab3550_plf_data,
},
#elif defined(CONFIG_AB3100_CORE)
#ifdef CONFIG_AB3100_CORE
{
.type = "ab3100",
.addr = 0x48,
......
arch/arm/mach-u300/include/mach/irqs.h
View file @ 8959e743
......@@ -109,13 +109,6 @@
#define U300_NR_IRQS 48
#endif
#ifdef CONFIG_AB3550_CORE
#define IRQ_AB3550_BASE (U300_NR_IRQS)
#define IRQ_AB3550_END (IRQ_AB3550_BASE + 37)
#define NR_IRQS (IRQ_AB3550_END + 1)
#else
#define NR_IRQS U300_NR_IRQS
#endif
#endif
drivers/mfd/Kconfig
View file @ 8959e743
......@@ -616,20 +616,6 @@ config AB8500_GPADC
help
AB8500 GPADC driver used to convert Acc and battery/ac/usb voltage
config AB3550_CORE
bool "ST-Ericsson AB3550 Mixed Signal Circuit core functions"
select MFD_CORE
depends on I2C=y && GENERIC_HARDIRQS && ABX500_CORE
help
Select this to enable the AB3550 Mixed Signal IC core
functionality. This connects to a AB3550 on the I2C bus
and expose a number of symbols needed for dependent devices
to read and write registers and subscribe to events from
this multi-functional IC. This is needed to use other features
of the AB3550 such as battery-backed RTC, charging control,
LEDs, vibrator, system power and temperature, power management
and ALSA sound.
config MFD_DB8500_PRCMU
bool "ST-Ericsson DB8500 Power Reset Control Management Unit"
depends on UX500_SOC_DB8500
......
drivers/mfd/Makefile
View file @ 8959e743
......@@ -79,7 +79,6 @@ obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
obj-$(CONFIG_ABX500_CORE) += abx500-core.o
obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_AB3550_CORE) += ab3550-core.o
obj-$(CONFIG_AB5500_CORE) += ab5500-core.o
obj-$(CONFIG_AB5500_DEBUG) += ab5500-debugfs.o
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
......
drivers/mfd/ab3550-core.c deleted 100644 → 0
View file @ 94be70d4
/*
* Copyright (C) 2007-2010 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Low-level core for exclusive access to the AB3550 IC on the I2C bus
* and some basic chip-configuration.
* Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
* Author: Mattias Wallin <mattias.wallin@stericsson.com>
* Author: Rickard Andersson <rickard.andersson@stericsson.com>
*/
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/random.h>
#include <linux/workqueue.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/mfd/abx500.h>
#include <linux/list.h>
#include <linux/bitops.h>
#include <linux/spinlock.h>
#include <linux/mfd/core.h>
#define AB3550_NAME_STRING "ab3550"
#define AB3550_ID_FORMAT_STRING "AB3550 %s"
#define AB3550_NUM_BANKS 2
#define AB3550_NUM_EVENT_REG 5
/* These are the only registers inside AB3550 used in this main file */
/* Chip ID register */
#define AB3550_CID_REG 0x20
/* Interrupt event registers */
#define AB3550_EVENT_BANK 0
#define AB3550_EVENT_REG 0x22
/* Read/write operation values. */
#define AB3550_PERM_RD (0x01)
#define AB3550_PERM_WR (0x02)
/* Read/write permissions. */
#define AB3550_PERM_RO (AB3550_PERM_RD)
#define AB3550_PERM_RW (AB3550_PERM_RD | AB3550_PERM_WR)
/**
* struct ab3550
* @access_mutex: lock out concurrent accesses to the AB registers
* @i2c_client: I2C client for this chip
* @chip_name: name of this chip variant
* @chip_id: 8 bit chip ID for this chip variant
* @mask_work: a worker for writing to mask registers
* @event_lock: a lock to protect the event_mask
* @event_mask: a local copy of the mask event registers
* @startup_events: a copy of the first reading of the event registers
* @startup_events_read: whether the first events have been read
*/
struct ab3550 {
struct mutex access_mutex;
struct i2c_client *i2c_client[AB3550_NUM_BANKS];
char chip_name[32];
u8 chip_id;
struct work_struct mask_work;
spinlock_t event_lock;
u8 event_mask[AB3550_NUM_EVENT_REG];
u8 startup_events[AB3550_NUM_EVENT_REG];
bool startup_events_read;
#ifdef CONFIG_DEBUG_FS
unsigned int debug_bank;
unsigned int debug_address;
#endif
};
/**
* struct ab3550_reg_range
* @first: the first address of the range
* @last: the last address of the range
* @perm: access permissions for the range
*/
struct ab3550_reg_range {
u8 first;
u8 last;
u8 perm;
};
/**
* struct ab3550_reg_ranges
* @count: the number of ranges in the list
* @range: the list of register ranges
*/
struct ab3550_reg_ranges {
u8 count;
const struct ab3550_reg_range *range;
};
/*
* Permissible register ranges for reading and writing per device and bank.
*
* The ranges must be listed in increasing address order, and no overlaps are
* allowed. It is assumed that write permission implies read permission
* (i.e. only RO and RW permissions should be used). Ranges with write
* permission must not be split up.
*/
#define NO_RANGE {.count = 0, .range = NULL,}
static struct
ab3550_reg_ranges ab3550_reg_ranges[AB3550_NUM_DEVICES][AB3550_NUM_BANKS] = {
[AB3550_DEVID_DAC] = {
NO_RANGE,
{
.count = 2,
.range = (struct ab3550_reg_range[]) {
{
.first = 0xb0,
.last = 0xba,
.perm = AB3550_PERM_RW,
},
{
.first = 0xbc,
.last = 0xc3,
.perm = AB3550_PERM_RW,
},
},
},
},
[AB3550_DEVID_LEDS] = {
NO_RANGE,
{
.count = 2,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x5a,
.last = 0x88,
.perm = AB3550_PERM_RW,
},
{
.first = 0x8a,
.last = 0xad,
.perm = AB3550_PERM_RW,
},
}
},
},
[AB3550_DEVID_POWER] = {
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x21,
.last = 0x21,
.perm = AB3550_PERM_RO,
},
}
},
NO_RANGE,
},
[AB3550_DEVID_REGULATORS] = {
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x69,
.last = 0xa3,
.perm = AB3550_PERM_RW,
},
}
},
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x14,
.last = 0x16,
.perm = AB3550_PERM_RW,
},
}
},
},
[AB3550_DEVID_SIM] = {
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x21,
.last = 0x21,
.perm = AB3550_PERM_RO,
},
}
},
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x14,
.last = 0x17,
.perm = AB3550_PERM_RW,
},
}
},
},
[AB3550_DEVID_UART] = {
NO_RANGE,
NO_RANGE,
},
[AB3550_DEVID_RTC] = {
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x00,
.last = 0x0c,
.perm = AB3550_PERM_RW,
},
}
},
NO_RANGE,
},
[AB3550_DEVID_CHARGER] = {
{
.count = 2,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x10,
.last = 0x1a,
.perm = AB3550_PERM_RW,
},
{
.first = 0x21,
.last = 0x21,
.perm = AB3550_PERM_RO,
},
}
},
NO_RANGE,
},
[AB3550_DEVID_ADC] = {
NO_RANGE,
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x20,
.last = 0x56,
.perm = AB3550_PERM_RW,
},
}
},
},
[AB3550_DEVID_FUELGAUGE] = {
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x21,
.last = 0x21,
.perm = AB3550_PERM_RO,
},
}
},
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x00,
.last = 0x0e,
.perm = AB3550_PERM_RW,
},
}
},
},
[AB3550_DEVID_VIBRATOR] = {
NO_RANGE,
{
.count = 1,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x10,
.last = 0x13,
.perm = AB3550_PERM_RW,
},
}
},
},
[AB3550_DEVID_CODEC] = {
{
.count = 2,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x31,
.last = 0x63,
.perm = AB3550_PERM_RW,
},
{
.first = 0x65,
.last = 0x68,
.perm = AB3550_PERM_RW,
},
}
},
NO_RANGE,
},
};
static struct mfd_cell ab3550_devs[AB3550_NUM_DEVICES] = {
[AB3550_DEVID_DAC] = {
.name = "ab3550-dac",
.id = AB3550_DEVID_DAC,
.num_resources = 0,
},
[AB3550_DEVID_LEDS] = {
.name = "ab3550-leds",
.id = AB3550_DEVID_LEDS,
},
[AB3550_DEVID_POWER] = {
.name = "ab3550-power",
.id = AB3550_DEVID_POWER,
},
[AB3550_DEVID_REGULATORS] = {
.name = "ab3550-regulators",
.id = AB3550_DEVID_REGULATORS,
},
[AB3550_DEVID_SIM] = {
.name = "ab3550-sim",
.id = AB3550_DEVID_SIM,
},
[AB3550_DEVID_UART] = {
.name = "ab3550-uart",
.id = AB3550_DEVID_UART,
},
[AB3550_DEVID_RTC] = {
.name = "ab3550-rtc",
.id = AB3550_DEVID_RTC,
},
[AB3550_DEVID_CHARGER] = {
.name = "ab3550-charger",
.id = AB3550_DEVID_CHARGER,
},
[AB3550_DEVID_ADC] = {
.name = "ab3550-adc",
.id = AB3550_DEVID_ADC,
.num_resources = 10,
.resources = (struct resource[]) {
{
.name = "TRIGGER-0",
.flags = IORESOURCE_IRQ,
.start = 16,
.end = 16,
},
{
.name = "TRIGGER-1",
.flags = IORESOURCE_IRQ,
.start = 17,
.end = 17,
},
{
.name = "TRIGGER-2",
.flags = IORESOURCE_IRQ,
.start = 18,
.end = 18,
},
{
.name = "TRIGGER-3",
.flags = IORESOURCE_IRQ,
.start = 19,
.end = 19,
},
{
.name = "TRIGGER-4",
.flags = IORESOURCE_IRQ,
.start = 20,
.end = 20,
},
{
.name = "TRIGGER-5",
.flags = IORESOURCE_IRQ,
.start = 21,
.end = 21,
},
{
.name = "TRIGGER-6",
.flags = IORESOURCE_IRQ,
.start = 22,
.end = 22,
},
{
.name = "TRIGGER-7",
.flags = IORESOURCE_IRQ,
.start = 23,
.end = 23,
},
{
.name = "TRIGGER-VBAT-TXON",
.flags = IORESOURCE_IRQ,
.start = 13,
.end = 13,
},
{
.name = "TRIGGER-VBAT",
.flags = IORESOURCE_IRQ,
.start = 12,
.end = 12,
},
},
},
[AB3550_DEVID_FUELGAUGE] = {
.name = "ab3550-fuelgauge",
.id = AB3550_DEVID_FUELGAUGE,
},
[AB3550_DEVID_VIBRATOR] = {
.name = "ab3550-vibrator",
.id = AB3550_DEVID_VIBRATOR,
},
[AB3550_DEVID_CODEC] = {
.name = "ab3550-codec",
.id = AB3550_DEVID_CODEC,
},
};
/*
* I2C transactions with error messages.
*/
static int ab3550_i2c_master_send(struct ab3550 *ab, u8 bank, u8 *data,
u8 count)
{
int err;
err = i2c_master_send(ab->i2c_client[bank], data, count);
if (err < 0) {
dev_err(&ab->i2c_client[0]->dev, "send error: %d\n", err);
return err;
}
return 0;
}
static int ab3550_i2c_master_recv(struct ab3550 *ab, u8 bank, u8 *data,
u8 count)
{
int err;
err = i2c_master_recv(ab->i2c_client[bank], data, count);
if (err < 0) {
dev_err(&ab->i2c_client[0]->dev, "receive error: %d\n", err);
return err;
}
return 0;
}
/*
* Functionality for getting/setting register values.
*/
static int get_register_interruptible(struct ab3550 *ab, u8 bank, u8 reg,
u8 *value)
{
int err;
err = mutex_lock_interruptible(&ab->access_mutex);
if (err)
return err;
err = ab3550_i2c_master_send(ab, bank, &reg, 1);
if (!err)
err = ab3550_i2c_master_recv(ab, bank, value, 1);
mutex_unlock(&ab->access_mutex);
return err;
}
static int get_register_page_interruptible(struct ab3550 *ab, u8 bank,
u8 first_reg, u8 *regvals, u8 numregs)
{
int err;
err = mutex_lock_interruptible(&ab->access_mutex);
if (err)
return err;
err = ab3550_i2c_master_send(ab, bank, &first_reg, 1);
if (!err)
err = ab3550_i2c_master_recv(ab, bank, regvals, numregs);
mutex_unlock(&ab->access_mutex);
return err;
}
static int mask_and_set_register_interruptible(struct ab3550 *ab, u8 bank,
u8 reg, u8 bitmask, u8 bitvalues)
{
int err = 0;
if (likely(bitmask)) {
u8 reg_bits[2] = {reg, 0};
err = mutex_lock_interruptible(&ab->access_mutex);
if (err)
return err;
if (bitmask == 0xFF) /* No need to read in this case. */
reg_bits[1] = bitvalues;
else { /* Read and modify the register value. */
u8 bits;
err = ab3550_i2c_master_send(ab, bank, &reg, 1);
if (err)
goto unlock_and_return;
err = ab3550_i2c_master_recv(ab, bank, &bits, 1);
if (err)
goto unlock_and_return;
reg_bits[1] = ((~bitmask & bits) |
(bitmask & bitvalues));
}
/* Write the new value. */
err = ab3550_i2c_master_send(ab, bank, reg_bits, 2);
unlock_and_return:
mutex_unlock(&ab->access_mutex);
}
return err;
}
/*
* Read/write permission checking functions.
*/
static bool page_write_allowed(const struct ab3550_reg_ranges *ranges,
u8 first_reg, u8 last_reg)
{
u8 i;
if (last_reg < first_reg)
return false;
for (i = 0; i < ranges->count; i++) {
if (first_reg < ranges->range[i].first)
break;
if ((last_reg <= ranges->range[i].last) &&
(ranges->range[i].perm & AB3550_PERM_WR))
return true;
}
return false;
}
static bool reg_write_allowed(const struct ab3550_reg_ranges *ranges, u8 reg)
{
return page_write_allowed(ranges, reg, reg);
}
static bool page_read_allowed(const struct ab3550_reg_ranges *ranges,
u8 first_reg, u8 last_reg)
{
u8 i;
if (last_reg < first_reg)
return false;
/* Find the range (if it exists in the list) that includes first_reg. */
for (i = 0; i < ranges->count; i++) {
if (first_reg < ranges->range[i].first)
return false;
if (first_reg <= ranges->range[i].last)
break;
}
/* Make sure that the entire range up to and including last_reg is
* readable. This may span several of the ranges in the list.
*/
while ((i < ranges->count) &&
(ranges->range[i].perm & AB3550_PERM_RD)) {
if (last_reg <= ranges->range[i].last)
return true;
if ((++i >= ranges->count) ||
(ranges->range[i].first !=
(ranges->range[i - 1].last + 1))) {
break;
}
}
return false;
}
static bool reg_read_allowed(const struct ab3550_reg_ranges *ranges, u8 reg)
{
return page_read_allowed(ranges, reg, reg);
}
/*
* The register access functionality.
*/
static int ab3550_get_chip_id(struct device *dev)
{
struct ab3550 *ab = dev_get_drvdata(dev->parent);
return (int)ab->chip_id;
}
static int ab3550_mask_and_set_register_interruptible(struct device *dev,
u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
{
struct ab3550 *ab;
struct platform_device *pdev = to_platform_device(dev);
if ((AB3550_NUM_BANKS <= bank) ||
!reg_write_allowed(&ab3550_reg_ranges[pdev->id][bank], reg))
return -EINVAL;
ab = dev_get_drvdata(dev->parent);
return mask_and_set_register_interruptible(ab, bank, reg,
bitmask, bitvalues);
}
static int ab3550_set_register_interruptible(struct device *dev, u8 bank,
u8 reg, u8 value)
{
return ab3550_mask_and_set_register_interruptible(dev, bank, reg, 0xFF,
value);
}
static int ab3550_get_register_interruptible(struct device *dev, u8 bank,
u8 reg, u8 *value)
{
struct ab3550 *ab;
struct platform_device *pdev = to_platform_device(dev);
if ((AB3550_NUM_BANKS <= bank) ||
!reg_read_allowed(&ab3550_reg_ranges[pdev->id][bank], reg))
return -EINVAL;
ab = dev_get_drvdata(dev->parent);
return get_register_interruptible(ab, bank, reg, value);
}
static int ab3550_get_register_page_interruptible(struct device *dev, u8 bank,
u8 first_reg, u8 *regvals, u8 numregs)
{
struct ab3550 *ab;
struct platform_device *pdev = to_platform_device(dev);
if ((AB3550_NUM_BANKS <= bank) ||
!page_read_allowed(&ab3550_reg_ranges[pdev->id][bank],
first_reg, (first_reg + numregs - 1)))
return -EINVAL;
ab = dev_get_drvdata(dev->parent);
return get_register_page_interruptible(ab, bank, first_reg, regvals,
numregs);
}
static int ab3550_event_registers_startup_state_get(struct device *dev,
u8 *event)
{
struct ab3550 *ab;
ab = dev_get_drvdata(dev->parent);
if (!ab->startup_events_read)
return -EAGAIN; /* Try again later */
memcpy(event, ab->startup_events, AB3550_NUM_EVENT_REG);
return 0;
}
static int ab3550_startup_irq_enabled(struct device *dev, unsigned int irq)
{
struct ab3550 *ab;
struct ab3550_platform_data *plf_data;
bool val;
ab = irq_get_chip_data(irq);
plf_data = ab->i2c_client[0]->dev.platform_data;
irq -= plf_data->irq.base;
val = ((ab->startup_events[irq / 8] & BIT(irq % 8)) != 0);
return val;
}
static struct abx500_ops ab3550_ops = {
.get_chip_id = ab3550_get_chip_id,
.get_register = ab3550_get_register_interruptible,
.set_register = ab3550_set_register_interruptible,
.get_register_page = ab3550_get_register_page_interruptible,
.set_register_page = NULL,
.mask_and_set_register = ab3550_mask_and_set_register_interruptible,
.event_registers_startup_state_get =
ab3550_event_registers_startup_state_get,
.startup_irq_enabled = ab3550_startup_irq_enabled,
};
static irqreturn_t ab3550_irq_handler(int irq, void *data)
{
struct ab3550 *ab = data;
int err;
unsigned int i;
u8 e[AB3550_NUM_EVENT_REG];
u8 *events;
unsigned long flags;
events = (ab->startup_events_read ? e : ab->startup_events);
err = get_register_page_interruptible(ab, AB3550_EVENT_BANK,
AB3550_EVENT_REG, events, AB3550_NUM_EVENT_REG);
if (err)
goto err_event_rd;
if (!ab->startup_events_read) {
dev_info(&ab->i2c_client[0]->dev,
"startup events 0x%x,0x%x,0x%x,0x%x,0x%x\n",
ab->startup_events[0], ab->startup_events[1],
ab->startup_events[2], ab->startup_events[3],
ab->startup_events[4]);
ab->startup_events_read = true;
goto out;
}
/* The two highest bits in event[4] are not used. */
events[4] &= 0x3f;
spin_lock_irqsave(&ab->event_lock, flags);
for (i = 0; i < AB3550_NUM_EVENT_REG; i++)
events[i] &= ~ab->event_mask[i];
spin_unlock_irqrestore(&ab->event_lock, flags);
for (i = 0; i < AB3550_NUM_EVENT_REG; i++) {
u8 bit;
u8 event_reg;
dev_dbg(&ab->i2c_client[0]->dev, "IRQ Event[%d]: 0x%2x\n",
i, events[i]);
event_reg = events[i];
for (bit = 0; event_reg; bit++, event_reg /= 2) {
if (event_reg % 2) {
unsigned int irq;
struct ab3550_platform_data *plf_data;
plf_data = ab->i2c_client[0]->dev.platform_data;
irq = plf_data->irq.base + (i * 8) + bit;
handle_nested_irq(irq);
}
}
}
out:
return IRQ_HANDLED;
err_event_rd:
dev_dbg(&ab->i2c_client[0]->dev, "error reading event registers\n");
return IRQ_HANDLED;
}
#ifdef CONFIG_DEBUG_FS
static struct ab3550_reg_ranges debug_ranges[AB3550_NUM_BANKS] = {
{
.count = 6,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x00,
.last = 0x0e,
},
{
.first = 0x10,
.last = 0x1a,
},
{
.first = 0x1e,
.last = 0x4f,
},
{
.first = 0x51,
.last = 0x63,
},
{
.first = 0x65,
.last = 0xa3,
},
{
.first = 0xa5,
.last = 0xa8,
},
}
},
{
.count = 8,
.range = (struct ab3550_reg_range[]) {
{
.first = 0x00,
.last = 0x0e,
},
{
.first = 0x10,
.last = 0x17,
},
{
.first = 0x1a,
.last = 0x1c,
},
{
.first = 0x20,
.last = 0x56,
},
{
.first = 0x5a,
.last = 0x88,
},
{
.first = 0x8a,
.last = 0xad,
},
{
.first = 0xb0,
.last = 0xba,
},
{
.first = 0xbc,
.last = 0xc3,
},
}
},
};
static int ab3550_registers_print(struct seq_file *s, void *p)
{
struct ab3550 *ab = s->private;
int bank;
seq_printf(s, AB3550_NAME_STRING " register values:\n");
for (bank = 0; bank < AB3550_NUM_BANKS; bank++) {
unsigned int i;
seq_printf(s, " bank %d:\n", bank);
for (i = 0; i < debug_ranges[bank].count; i++) {
u8 reg;
for (reg = debug_ranges[bank].range[i].first;
reg <= debug_ranges[bank].range[i].last;
reg++) {
u8 value;
get_register_interruptible(ab, bank, reg,
&value);
seq_printf(s, " [%d/0x%02X]: 0x%02X\n", bank,
reg, value);
}
}
}
return 0;
}
static int ab3550_registers_open(struct inode *inode, struct file *file)
{
return single_open(file, ab3550_registers_print, inode->i_private);
}
static const struct file_operations ab3550_registers_fops = {
.open = ab3550_registers_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static int ab3550_bank_print(struct seq_file *s, void *p)
{
struct ab3550 *ab = s->private;
seq_printf(s, "%d\n", ab->debug_bank);
return 0;
}
static int ab3550_bank_open(struct inode *inode, struct file *file)
{
return single_open(file, ab3550_bank_print, inode->i_private);
}
static ssize_t ab3550_bank_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ab3550 *ab = ((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 >= AB3550_NUM_BANKS) {
dev_err(&ab->i2c_client[0]->dev,
"debugfs error input > number of banks\n");
return -EINVAL;
}
ab->debug_bank = user_bank;
return count;
}
static int ab3550_address_print(struct seq_file *s, void *p)
{
struct ab3550 *ab = s->private;
seq_printf(s, "0x%02X\n", ab->debug_address);
return 0;
}
static int ab3550_address_open(struct inode *inode, struct file *file)
{
return single_open(file, ab3550_address_print, inode->i_private);
}
static ssize_t ab3550_address_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ab3550 *ab = ((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(&ab->i2c_client[0]->dev,
"debugfs error input > 0xff\n");
return -EINVAL;
}
ab->debug_address = user_address;
return count;
}
static int ab3550_val_print(struct seq_file *s, void *p)
{
struct ab3550 *ab = s->private;
int err;
u8 regvalue;
err = get_register_interruptible(ab, (u8)ab->debug_bank,
(u8)ab->debug_address, &regvalue);
if (err)
return -EINVAL;
seq_printf(s, "0x%02X\n", regvalue);
return 0;
}
static int ab3550_val_open(struct inode *inode, struct file *file)
{
return single_open(file, ab3550_val_print, inode->i_private);
}
static ssize_t ab3550_val_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ab3550 *ab = ((struct seq_file *)(file->private_data))->private;
unsigned long user_val;
int err;
u8 regvalue;
/* 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(&ab->i2c_client[0]->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 count;
}
static const struct file_operations ab3550_bank_fops = {
.open = ab3550_bank_open,
.write = ab3550_bank_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static const struct file_operations ab3550_address_fops = {
.open = ab3550_address_open,
.write = ab3550_address_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static const struct file_operations ab3550_val_fops = {
.open = ab3550_val_open,
.write = ab3550_val_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static struct dentry *ab3550_dir;
static struct dentry *ab3550_reg_file;
static struct dentry *ab3550_bank_file;
static struct dentry *ab3550_address_file;
static struct dentry *ab3550_val_file;
static inline void ab3550_setup_debugfs(struct ab3550 *ab)
{
ab->debug_bank = 0;
ab->debug_address = 0x00;
ab3550_dir = debugfs_create_dir(AB3550_NAME_STRING, NULL);
if (!ab3550_dir)
goto exit_no_debugfs;
ab3550_reg_file = debugfs_create_file("all-registers",
S_IRUGO, ab3550_dir, ab, &ab3550_registers_fops);
if (!ab3550_reg_file)
goto exit_destroy_dir;
ab3550_bank_file = debugfs_create_file("register-bank",
(S_IRUGO | S_IWUSR), ab3550_dir, ab, &ab3550_bank_fops);
if (!ab3550_bank_file)
goto exit_destroy_reg;
ab3550_address_file = debugfs_create_file("register-address",
(S_IRUGO | S_IWUSR), ab3550_dir, ab, &ab3550_address_fops);
if (!ab3550_address_file)
goto exit_destroy_bank;
ab3550_val_file = debugfs_create_file("register-value",
(S_IRUGO | S_IWUSR), ab3550_dir, ab, &ab3550_val_fops);
if (!ab3550_val_file)
goto exit_destroy_address;
return;
exit_destroy_address:
debugfs_remove(ab3550_address_file);
exit_destroy_bank:
debugfs_remove(ab3550_bank_file);
exit_destroy_reg:
debugfs_remove(ab3550_reg_file);
exit_destroy_dir:
debugfs_remove(ab3550_dir);
exit_no_debugfs:
dev_err(&ab->i2c_client[0]->dev, "failed to create debugfs entries.\n");
return;
}
static inline void ab3550_remove_debugfs(void)
{
debugfs_remove(ab3550_val_file);
debugfs_remove(ab3550_address_file);
debugfs_remove(ab3550_bank_file);
debugfs_remove(ab3550_reg_file);
debugfs_remove(ab3550_dir);
}
#else /* !CONFIG_DEBUG_FS */
static inline void ab3550_setup_debugfs(struct ab3550 *ab)
{
}
static inline void ab3550_remove_debugfs(void)
{
}
#endif
/*
* Basic set-up, datastructure creation/destruction and I2C interface.
* This sets up a default config in the AB3550 chip so that it
* will work as expected.
*/
static int __devinit ab3550_setup(struct ab3550 *ab)
{
int err = 0;
int i;
struct ab3550_platform_data *plf_data;
struct abx500_init_settings *settings;
plf_data = ab->i2c_client[0]->dev.platform_data;
settings = plf_data->init_settings;
for (i = 0; i < plf_data->init_settings_sz; i++) {
err = mask_and_set_register_interruptible(ab,
settings[i].bank,
settings[i].reg,
0xFF, settings[i].setting);
if (err)
goto exit_no_setup;
/* If event mask register update the event mask in ab3550 */
if ((settings[i].bank == 0) &&
(AB3550_IMR1 <= settings[i].reg) &&
(settings[i].reg <= AB3550_IMR5)) {
ab->event_mask[settings[i].reg - AB3550_IMR1] =
settings[i].setting;
}
}
exit_no_setup:
return err;
}
static void ab3550_mask_work(struct work_struct *work)
{
struct ab3550 *ab = container_of(work, struct ab3550, mask_work);
int i;
unsigned long flags;
u8 mask[AB3550_NUM_EVENT_REG];
spin_lock_irqsave(&ab->event_lock, flags);
for (i = 0; i < AB3550_NUM_EVENT_REG; i++)
mask[i] = ab->event_mask[i];
spin_unlock_irqrestore(&ab->event_lock, flags);
for (i = 0; i < AB3550_NUM_EVENT_REG; i++) {
int err;
err = mask_and_set_register_interruptible(ab, 0,
(AB3550_IMR1 + i), ~0, mask[i]);
if (err)
dev_err(&ab->i2c_client[0]->dev,
"ab3550_mask_work failed 0x%x,0x%x\n",
(AB3550_IMR1 + i), mask[i]);
}
}
static void ab3550_mask(struct irq_data *data)
{
unsigned long flags;
struct ab3550 *ab;
struct ab3550_platform_data *plf_data;
int irq;
ab = irq_data_get_irq_chip_data(data);
plf_data = ab->i2c_client[0]->dev.platform_data;
irq = data->irq - plf_data->irq.base;
spin_lock_irqsave(&ab->event_lock, flags);
ab->event_mask[irq / 8] |= BIT(irq % 8);
spin_unlock_irqrestore(&ab->event_lock, flags);
schedule_work(&ab->mask_work);
}
static void ab3550_unmask(struct irq_data *data)
{
unsigned long flags;
struct ab3550 *ab;
struct ab3550_platform_data *plf_data;
int irq;
ab = irq_data_get_irq_chip_data(data);
plf_data = ab->i2c_client[0]->dev.platform_data;
irq = data->irq - plf_data->irq.base;
spin_lock_irqsave(&ab->event_lock, flags);
ab->event_mask[irq / 8] &= ~BIT(irq % 8);
spin_unlock_irqrestore(&ab->event_lock, flags);
schedule_work(&ab->mask_work);
}
static void noop(struct irq_data *data)
{
}
static struct irq_chip ab3550_irq_chip = {
.name = "ab3550-core", /* Keep the same name as the request */
.irq_disable = ab3550_mask, /* No default to mask in chip.c */
.irq_ack = noop,
.irq_mask = ab3550_mask,
.irq_unmask = ab3550_unmask,
};
struct ab_family_id {
u8 id;
char *name;
};
static const struct ab_family_id ids[] __devinitconst = {
/* AB3550 */
{
.id = AB3550_P1A,
.name = "P1A"
},
/* Terminator */
{
.id = 0x00,
}
};
static int __devinit ab3550_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct ab3550 *ab;
struct ab3550_platform_data *ab3550_plf_data =
client->dev.platform_data;
int err;
int i;
int num_i2c_clients = 0;
ab = kzalloc(sizeof(struct ab3550), GFP_KERNEL);
if (!ab) {
dev_err(&client->dev,
"could not allocate " AB3550_NAME_STRING " device\n");
return -ENOMEM;
}
/* Initialize data structure */
mutex_init(&ab->access_mutex);
spin_lock_init(&ab->event_lock);
ab->i2c_client[0] = client;
i2c_set_clientdata(client, ab);
/* Read chip ID register */
err = get_register_interruptible(ab, 0, AB3550_CID_REG, &ab->chip_id);
if (err) {
dev_err(&client->dev, "could not communicate with the analog "
"baseband chip\n");
goto exit_no_detect;
}
for (i = 0; ids[i].id != 0x0; i++) {
if (ids[i].id == ab->chip_id) {
snprintf(&ab->chip_name[0], sizeof(ab->chip_name) - 1,
AB3550_ID_FORMAT_STRING, ids[i].name);
break;
}
}
if (ids[i].id == 0x0) {
dev_err(&client->dev, "unknown analog baseband chip id: 0x%x\n",
ab->chip_id);
dev_err(&client->dev, "driver not started!\n");
goto exit_no_detect;
}
dev_info(&client->dev, "detected AB chip: %s\n", &ab->chip_name[0]);
/* Attach other dummy I2C clients. */
while (++num_i2c_clients < AB3550_NUM_BANKS) {
ab->i2c_client[num_i2c_clients] =
i2c_new_dummy(client->adapter,
(client->addr + num_i2c_clients));
if (!ab->i2c_client[num_i2c_clients]) {
err = -ENOMEM;
goto exit_no_dummy_client;
}
strlcpy(ab->i2c_client[num_i2c_clients]->name, id->name,
sizeof(ab->i2c_client[num_i2c_clients]->name));
}
err = ab3550_setup(ab);
if (err)
goto exit_no_setup;
INIT_WORK(&ab->mask_work, ab3550_mask_work);
for (i = 0; i < ab3550_plf_data->irq.count; i++) {
unsigned int irq;
irq = ab3550_plf_data->irq.base + i;
irq_set_chip_data(irq, ab);
irq_set_chip_and_handler(irq, &ab3550_irq_chip,
handle_simple_irq);
irq_set_nested_thread(irq, 1);
#ifdef CONFIG_ARM
set_irq_flags(irq, IRQF_VALID);
#else
irq_set_noprobe(irq);
#endif
}
err = request_threaded_irq(client->irq, NULL, ab3550_irq_handler,
IRQF_ONESHOT, "ab3550-core", ab);
/* This real unpredictable IRQ is of course sampled for entropy */
rand_initialize_irq(client->irq);
if (err)
goto exit_no_irq;
err = abx500_register_ops(&client->dev, &ab3550_ops);
if (err)
goto exit_no_ops;
/* Set up and register the platform devices. */
for (i = 0; i < AB3550_NUM_DEVICES; i++) {
ab3550_devs[i].platform_data = ab3550_plf_data->dev_data[i];
ab3550_devs[i].pdata_size = ab3550_plf_data->dev_data_sz[i];
}
err = mfd_add_devices(&client->dev, 0, ab3550_devs,
ARRAY_SIZE(ab3550_devs), NULL,
ab3550_plf_data->irq.base);
ab3550_setup_debugfs(ab);
return 0;
exit_no_ops:
exit_no_irq:
exit_no_setup:
exit_no_dummy_client:
/* Unregister the dummy i2c clients. */
while (--num_i2c_clients)
i2c_unregister_device(ab->i2c_client[num_i2c_clients]);
exit_no_detect:
kfree(ab);
return err;
}
static int __devexit ab3550_remove(struct i2c_client *client)
{
struct ab3550 *ab = i2c_get_clientdata(client);
int num_i2c_clients = AB3550_NUM_BANKS;
mfd_remove_devices(&client->dev);
ab3550_remove_debugfs();
while (--num_i2c_clients)
i2c_unregister_device(ab->i2c_client[num_i2c_clients]);
/*
* At this point, all subscribers should have unregistered
* their notifiers so deactivate IRQ
*/
free_irq(client->irq, ab);
kfree(ab);
return 0;
}
static const struct i2c_device_id ab3550_id[] = {
{AB3550_NAME_STRING, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, ab3550_id);
static struct i2c_driver ab3550_driver = {
.driver = {
.name = AB3550_NAME_STRING,
.owner = THIS_MODULE,
},
.id_table = ab3550_id,
.probe = ab3550_probe,
.remove = __devexit_p(ab3550_remove),
};
static int __init ab3550_i2c_init(void)
{
return i2c_add_driver(&ab3550_driver);
}
static void __exit ab3550_i2c_exit(void)
{
i2c_del_driver(&ab3550_driver);
}
subsys_initcall(ab3550_i2c_init);
module_exit(ab3550_i2c_exit);
MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
MODULE_DESCRIPTION("AB3550 core driver");
MODULE_LICENSE("GPL");
include/linux/mfd/abx500.h
View file @ 8959e743
......@@ -6,7 +6,7 @@
*
* ABX500 core access functions.
* The abx500 interface is used for the Analog Baseband chip
* ab3100, ab3550, ab5500, and ab8500.
* ab3100, ab5500, and ab8500.
*
* Author: Mattias Wallin <mattias.wallin@stericsson.com>
* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
......@@ -29,7 +29,6 @@
#define AB3100_P1G 0xc6
#define AB3100_R2A 0xc7
#define AB3100_R2B 0xc8
#define AB3550_P1A 0x10
#define AB5500_1_0 0x20
#define AB5500_1_1 0x21
#define AB5500_2_0 0x24
......@@ -143,39 +142,6 @@ int ab3100_event_register(struct ab3100 *ab3100,
int ab3100_event_unregister(struct ab3100 *ab3100,
struct notifier_block *nb);
/* AB3550, STR register flags */
#define AB3550_STR_ONSWA (0x01)
#define AB3550_STR_ONSWB (0x02)
#define AB3550_STR_ONSWC (0x04)
#define AB3550_STR_DCIO (0x08)
#define AB3550_STR_BOOT_MODE (0x10)
#define AB3550_STR_SIM_OFF (0x20)
#define AB3550_STR_BATT_REMOVAL (0x40)
#define AB3550_STR_VBUS (0x80)
/* Interrupt mask registers */
#define AB3550_IMR1 0x29
#define AB3550_IMR2 0x2a
#define AB3550_IMR3 0x2b
#define AB3550_IMR4 0x2c
#define AB3550_IMR5 0x2d
enum ab3550_devid {
AB3550_DEVID_ADC,
AB3550_DEVID_DAC,
AB3550_DEVID_LEDS,
AB3550_DEVID_POWER,
AB3550_DEVID_REGULATORS,
AB3550_DEVID_SIM,
AB3550_DEVID_UART,
AB3550_DEVID_RTC,
AB3550_DEVID_CHARGER,
AB3550_DEVID_FUELGAUGE,
AB3550_DEVID_VIBRATOR,
AB3550_DEVID_CODEC,
AB3550_NUM_DEVICES,
};
/**
* struct abx500_init_setting
* Initial value of the registers for driver to use during setup.
......@@ -186,18 +152,6 @@ struct abx500_init_settings {
u8 setting;
};
/**
* struct ab3550_platform_data
* Data supplied to initialize board connections to the AB3550
*/
struct ab3550_platform_data {
struct {unsigned int base; unsigned int count; } irq;
void *dev_data[AB3550_NUM_DEVICES];
size_t dev_data_sz[AB3550_NUM_DEVICES];
struct abx500_init_settings *init_settings;
unsigned int init_settings_sz;
};
int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
u8 value);
int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7