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linux/drivers/mfd/ab8500-core.c
Lee Jones 06e589efa5 mfd: Add IRQ domain support for the AB8500 
As the AB8500 is an IRQ controller in its own right, here we provide
the AB8500 driver with IRQ domain support. This is required if we wish
to reference any of its IRQs from a platform's Device Tree.

Cc: Naga Radheshy <naga.radheshy@stericsson.com>
Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Cc: Daniel Willerud <daniel.willerud@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 00:16:08 +02:00

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/*
* Copyright (C) ST-Ericsson SA 2010
*
* License Terms: GNU General Public License v2
* Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
* Author: Rabin Vincent <rabin.vincent@stericsson.com>
* Author: Mattias Wallin <mattias.wallin@stericsson.com>
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/dbx500-prcmu.h>
#include <linux/regulator/ab8500.h>
#include <linux/of.h>
#include <linux/of_device.h>
/*
* Interrupt register offsets
* Bank : 0x0E
*/
#define AB8500_IT_SOURCE1_REG 0x00
#define AB8500_IT_SOURCE2_REG 0x01
#define AB8500_IT_SOURCE3_REG 0x02
#define AB8500_IT_SOURCE4_REG 0x03
#define AB8500_IT_SOURCE5_REG 0x04
#define AB8500_IT_SOURCE6_REG 0x05
#define AB8500_IT_SOURCE7_REG 0x06
#define AB8500_IT_SOURCE8_REG 0x07
#define AB9540_IT_SOURCE13_REG 0x0C
#define AB8500_IT_SOURCE19_REG 0x12
#define AB8500_IT_SOURCE20_REG 0x13
#define AB8500_IT_SOURCE21_REG 0x14
#define AB8500_IT_SOURCE22_REG 0x15
#define AB8500_IT_SOURCE23_REG 0x16
#define AB8500_IT_SOURCE24_REG 0x17
/*
* latch registers
*/
#define AB8500_IT_LATCH1_REG 0x20
#define AB8500_IT_LATCH2_REG 0x21
#define AB8500_IT_LATCH3_REG 0x22
#define AB8500_IT_LATCH4_REG 0x23
#define AB8500_IT_LATCH5_REG 0x24
#define AB8500_IT_LATCH6_REG 0x25
#define AB8500_IT_LATCH7_REG 0x26
#define AB8500_IT_LATCH8_REG 0x27
#define AB8500_IT_LATCH9_REG 0x28
#define AB8500_IT_LATCH10_REG 0x29
#define AB8500_IT_LATCH12_REG 0x2B
#define AB9540_IT_LATCH13_REG 0x2C
#define AB8500_IT_LATCH19_REG 0x32
#define AB8500_IT_LATCH20_REG 0x33
#define AB8500_IT_LATCH21_REG 0x34
#define AB8500_IT_LATCH22_REG 0x35
#define AB8500_IT_LATCH23_REG 0x36
#define AB8500_IT_LATCH24_REG 0x37
/*
* mask registers
*/
#define AB8500_IT_MASK1_REG 0x40
#define AB8500_IT_MASK2_REG 0x41
#define AB8500_IT_MASK3_REG 0x42
#define AB8500_IT_MASK4_REG 0x43
#define AB8500_IT_MASK5_REG 0x44
#define AB8500_IT_MASK6_REG 0x45
#define AB8500_IT_MASK7_REG 0x46
#define AB8500_IT_MASK8_REG 0x47
#define AB8500_IT_MASK9_REG 0x48
#define AB8500_IT_MASK10_REG 0x49
#define AB8500_IT_MASK11_REG 0x4A
#define AB8500_IT_MASK12_REG 0x4B
#define AB8500_IT_MASK13_REG 0x4C
#define AB8500_IT_MASK14_REG 0x4D
#define AB8500_IT_MASK15_REG 0x4E
#define AB8500_IT_MASK16_REG 0x4F
#define AB8500_IT_MASK17_REG 0x50
#define AB8500_IT_MASK18_REG 0x51
#define AB8500_IT_MASK19_REG 0x52
#define AB8500_IT_MASK20_REG 0x53
#define AB8500_IT_MASK21_REG 0x54
#define AB8500_IT_MASK22_REG 0x55
#define AB8500_IT_MASK23_REG 0x56
#define AB8500_IT_MASK24_REG 0x57
/*
* latch hierarchy registers
*/
#define AB8500_IT_LATCHHIER1_REG 0x60
#define AB8500_IT_LATCHHIER2_REG 0x61
#define AB8500_IT_LATCHHIER3_REG 0x62
#define AB8500_IT_LATCHHIER_NUM 3
#define AB8500_REV_REG 0x80
#define AB8500_IC_NAME_REG 0x82
#define AB8500_SWITCH_OFF_STATUS 0x00
#define AB8500_TURN_ON_STATUS 0x00
static bool no_bm; /* No battery management */
module_param(no_bm, bool, S_IRUGO);
#define AB9540_MODEM_CTRL2_REG 0x23
#define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
/*
* Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
* numbers are indexed into this array with (num / 8). The interupts are
* defined in linux/mfd/ab8500.h
*
* This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
* offset 0.
*/
/* AB8500 support */
static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
};
/* AB9540 support */
static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
};
static const char ab8500_version_str[][7] = {
[AB8500_VERSION_AB8500] = "AB8500",
[AB8500_VERSION_AB8505] = "AB8505",
[AB8500_VERSION_AB9540] = "AB9540",
[AB8500_VERSION_AB8540] = "AB8540",
};
static int ab8500_i2c_write(struct ab8500 *ab8500, u16 addr, u8 data)
{
int ret;
ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
if (ret < 0)
dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
return ret;
}
static int ab8500_i2c_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
u8 data)
{
int ret;
ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
&mask, 1);
if (ret < 0)
dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
return ret;
}
static int ab8500_i2c_read(struct ab8500 *ab8500, u16 addr)
{
int ret;
u8 data;
ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
if (ret < 0) {
dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
return ret;
}
return (int)data;
}
static int ab8500_get_chip_id(struct device *dev)
{
struct ab8500 *ab8500;
if (!dev)
return -EINVAL;
ab8500 = dev_get_drvdata(dev->parent);
return ab8500 ? (int)ab8500->chip_id : -EINVAL;
}
static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
u8 reg, u8 data)
{
int ret;
/*
* Put the u8 bank and u8 register together into a an u16.
* The bank on higher 8 bits and register in lower 8 bits.
* */
u16 addr = ((u16)bank) << 8 | reg;
dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
mutex_lock(&ab8500->lock);
ret = ab8500->write(ab8500, addr, data);
if (ret < 0)
dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
addr, ret);
mutex_unlock(&ab8500->lock);
return ret;
}
static int ab8500_set_register(struct device *dev, u8 bank,
u8 reg, u8 value)
{
int ret;
struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
atomic_inc(&ab8500->transfer_ongoing);
ret = set_register_interruptible(ab8500, bank, reg, value);
atomic_dec(&ab8500->transfer_ongoing);
return ret;
}
static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
u8 reg, u8 *value)
{
int ret;
/* put the u8 bank and u8 reg together into a an u16.
* bank on higher 8 bits and reg in lower */
u16 addr = ((u16)bank) << 8 | reg;
mutex_lock(&ab8500->lock);
ret = ab8500->read(ab8500, addr);
if (ret < 0)
dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
addr, ret);
else
*value = ret;
mutex_unlock(&ab8500->lock);
dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
return ret;
}
static int ab8500_get_register(struct device *dev, u8 bank,
u8 reg, u8 *value)
{
int ret;
struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
atomic_inc(&ab8500->transfer_ongoing);
ret = get_register_interruptible(ab8500, bank, reg, value);
atomic_dec(&ab8500->transfer_ongoing);
return ret;
}
static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
u8 reg, u8 bitmask, u8 bitvalues)
{
int ret;
/* put the u8 bank and u8 reg together into a an u16.
* bank on higher 8 bits and reg in lower */
u16 addr = ((u16)bank) << 8 | reg;
mutex_lock(&ab8500->lock);
if (ab8500->write_masked == NULL) {
u8 data;
ret = ab8500->read(ab8500, addr);
if (ret < 0) {
dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
addr, ret);
goto out;
}
data = (u8)ret;
data = (~bitmask & data) | (bitmask & bitvalues);
ret = ab8500->write(ab8500, addr, data);
if (ret < 0)
dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
addr, ret);
dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
data);
goto out;
}
ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
if (ret < 0)
dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
ret);
out:
mutex_unlock(&ab8500->lock);
return ret;
}
static int ab8500_mask_and_set_register(struct device *dev,
u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
{
int ret;
struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
atomic_inc(&ab8500->transfer_ongoing);
ret= mask_and_set_register_interruptible(ab8500, bank, reg,
bitmask, bitvalues);
atomic_dec(&ab8500->transfer_ongoing);
return ret;
}
static struct abx500_ops ab8500_ops = {
.get_chip_id = ab8500_get_chip_id,
.get_register = ab8500_get_register,
.set_register = ab8500_set_register,
.get_register_page = NULL,
.set_register_page = NULL,
.mask_and_set_register = ab8500_mask_and_set_register,
.event_registers_startup_state_get = NULL,
.startup_irq_enabled = NULL,
};
static void ab8500_irq_lock(struct irq_data *data)
{
struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
mutex_lock(&ab8500->irq_lock);
atomic_inc(&ab8500->transfer_ongoing);
}
static void ab8500_irq_sync_unlock(struct irq_data *data)
{
struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
int i;
for (i = 0; i < ab8500->mask_size; i++) {
u8 old = ab8500->oldmask[i];
u8 new = ab8500->mask[i];
int reg;
if (new == old)
continue;
/*
* Interrupt register 12 doesn't exist prior to AB8500 version
* 2.0
*/
if (ab8500->irq_reg_offset[i] == 11 &&
is_ab8500_1p1_or_earlier(ab8500))
continue;
ab8500->oldmask[i] = new;
reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
}
atomic_dec(&ab8500->transfer_ongoing);
mutex_unlock(&ab8500->irq_lock);
}
static void ab8500_irq_mask(struct irq_data *data)
{
struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
int offset = data->hwirq;
int index = offset / 8;
int mask = 1 << (offset % 8);
ab8500->mask[index] |= mask;
}
static void ab8500_irq_unmask(struct irq_data *data)
{
struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
int offset = data->hwirq;
int index = offset / 8;
int mask = 1 << (offset % 8);
ab8500->mask[index] &= ~mask;
}
static struct irq_chip ab8500_irq_chip = {
.name = "ab8500",
.irq_bus_lock = ab8500_irq_lock,
.irq_bus_sync_unlock = ab8500_irq_sync_unlock,
.irq_mask = ab8500_irq_mask,
.irq_disable = ab8500_irq_mask,
.irq_unmask = ab8500_irq_unmask,
};
static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
int latch_offset, u8 latch_val)
{
int int_bit = __ffs(latch_val);
int line, i;
do {
int_bit = __ffs(latch_val);
for (i = 0; i < ab8500->mask_size; i++)
if (ab8500->irq_reg_offset[i] == latch_offset)
break;
if (i >= ab8500->mask_size) {
dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
latch_offset);
return -ENXIO;
}
line = (i << 3) + int_bit;
latch_val &= ~(1 << int_bit);
handle_nested_irq(ab8500->irq_base + line);
} while (latch_val);
return 0;
}
static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
int hier_offset, u8 hier_val)
{
int latch_bit, status;
u8 latch_offset, latch_val;
do {
latch_bit = __ffs(hier_val);
latch_offset = (hier_offset << 3) + latch_bit;
/* Fix inconsistent ITFromLatch25 bit mapping... */
if (unlikely(latch_offset == 17))
latch_offset = 24;
status = get_register_interruptible(ab8500,
AB8500_INTERRUPT,
AB8500_IT_LATCH1_REG + latch_offset,
&latch_val);
if (status < 0 || latch_val == 0)
goto discard;
status = ab8500_handle_hierarchical_line(ab8500,
latch_offset, latch_val);
if (status < 0)
return status;
discard:
hier_val &= ~(1 << latch_bit);
} while (hier_val);
return 0;
}
static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
{
struct ab8500 *ab8500 = dev;
u8 i;
dev_vdbg(ab8500->dev, "interrupt\n");
/* Hierarchical interrupt version */
for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) {
int status;
u8 hier_val;
status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
AB8500_IT_LATCHHIER1_REG + i, &hier_val);
if (status < 0 || hier_val == 0)
continue;
status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
if (status < 0)
break;
}
return IRQ_HANDLED;
}
static irqreturn_t ab8500_irq(int irq, void *dev)
{
struct ab8500 *ab8500 = dev;
int i;
dev_vdbg(ab8500->dev, "interrupt\n");
atomic_inc(&ab8500->transfer_ongoing);
for (i = 0; i < ab8500->mask_size; i++) {
int regoffset = ab8500->irq_reg_offset[i];
int status;
u8 value;
/*
* Interrupt register 12 doesn't exist prior to AB8500 version
* 2.0
*/
if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
continue;
status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
AB8500_IT_LATCH1_REG + regoffset, &value);
if (status < 0 || value == 0)
continue;
do {
int bit = __ffs(value);
int line = i * 8 + bit;
handle_nested_irq(ab8500->irq_base + line);
value &= ~(1 << bit);
} while (value);
}
atomic_dec(&ab8500->transfer_ongoing);
return IRQ_HANDLED;
}
/**
* ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
*
* @ab8500: ab8500_irq controller to operate on.
* @irq: index of the interrupt requested in the chip IRQs
*
* Useful for drivers to request their own IRQs.
*/
int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq)
{
if (!ab8500)
return -EINVAL;
return irq_create_mapping(ab8500->domain, irq);
}
EXPORT_SYMBOL_GPL(ab8500_irq_get_virq);
static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
irq_hw_number_t hwirq)
{
struct ab8500 *ab8500 = d->host_data;
if (!ab8500)
return -EINVAL;
irq_set_chip_data(virq, ab8500);
irq_set_chip_and_handler(virq, &ab8500_irq_chip,
handle_simple_irq);
irq_set_nested_thread(virq, 1);
#ifdef CONFIG_ARM
set_irq_flags(virq, IRQF_VALID);
#else
irq_set_noprobe(virq);
#endif
return 0;
}
static struct irq_domain_ops ab8500_irq_ops = {
.map = ab8500_irq_map,
.xlate = irq_domain_xlate_twocell,
};
static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
{
int num_irqs;
if (is_ab9540(ab8500))
num_irqs = AB9540_NR_IRQS;
else if (is_ab8505(ab8500))
num_irqs = AB8505_NR_IRQS;
else
num_irqs = AB8500_NR_IRQS;
if (ab8500->irq_base) {
ab8500->domain = irq_domain_add_legacy(
NULL, num_irqs, ab8500->irq_base,
0, &ab8500_irq_ops, ab8500);
}
else {
ab8500->domain = irq_domain_add_linear(
np, num_irqs, &ab8500_irq_ops, ab8500);
}
if (!ab8500->domain) {
dev_err(ab8500->dev, "Failed to create irqdomain\n");
return -ENOSYS;
}
return 0;
}
int ab8500_suspend(struct ab8500 *ab8500)
{
if (atomic_read(&ab8500->transfer_ongoing))
return -EINVAL;
else
return 0;
}
/* AB8500 GPIO Resources */
static struct resource __devinitdata ab8500_gpio_resources[] = {
{
.name = "GPIO_INT6",
.start = AB8500_INT_GPIO6R,
.end = AB8500_INT_GPIO41F,
.flags = IORESOURCE_IRQ,
}
};
/* AB9540 GPIO Resources */
static struct resource __devinitdata ab9540_gpio_resources[] = {
{
.name = "GPIO_INT6",
.start = AB8500_INT_GPIO6R,
.end = AB8500_INT_GPIO41F,
.flags = IORESOURCE_IRQ,
},
{
.name = "GPIO_INT14",
.start = AB9540_INT_GPIO50R,
.end = AB9540_INT_GPIO54R,
.flags = IORESOURCE_IRQ,
},
{
.name = "GPIO_INT15",
.start = AB9540_INT_GPIO50F,
.end = AB9540_INT_GPIO54F,
.flags = IORESOURCE_IRQ,
}
};
static struct resource __devinitdata ab8500_gpadc_resources[] = {
{
.name = "HW_CONV_END",
.start = AB8500_INT_GP_HW_ADC_CONV_END,
.end = AB8500_INT_GP_HW_ADC_CONV_END,
.flags = IORESOURCE_IRQ,
},
{
.name = "SW_CONV_END",
.start = AB8500_INT_GP_SW_ADC_CONV_END,
.end = AB8500_INT_GP_SW_ADC_CONV_END,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_rtc_resources[] = {
{
.name = "60S",
.start = AB8500_INT_RTC_60S,
.end = AB8500_INT_RTC_60S,
.flags = IORESOURCE_IRQ,
},
{
.name = "ALARM",
.start = AB8500_INT_RTC_ALARM,
.end = AB8500_INT_RTC_ALARM,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
{
.name = "ONKEY_DBF",
.start = AB8500_INT_PON_KEY1DB_F,
.end = AB8500_INT_PON_KEY1DB_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "ONKEY_DBR",
.start = AB8500_INT_PON_KEY1DB_R,
.end = AB8500_INT_PON_KEY1DB_R,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
{
.name = "ACC_DETECT_1DB_F",
.start = AB8500_INT_ACC_DETECT_1DB_F,
.end = AB8500_INT_ACC_DETECT_1DB_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "ACC_DETECT_1DB_R",
.start = AB8500_INT_ACC_DETECT_1DB_R,
.end = AB8500_INT_ACC_DETECT_1DB_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "ACC_DETECT_21DB_F",
.start = AB8500_INT_ACC_DETECT_21DB_F,
.end = AB8500_INT_ACC_DETECT_21DB_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "ACC_DETECT_21DB_R",
.start = AB8500_INT_ACC_DETECT_21DB_R,
.end = AB8500_INT_ACC_DETECT_21DB_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "ACC_DETECT_22DB_F",
.start = AB8500_INT_ACC_DETECT_22DB_F,
.end = AB8500_INT_ACC_DETECT_22DB_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "ACC_DETECT_22DB_R",
.start = AB8500_INT_ACC_DETECT_22DB_R,
.end = AB8500_INT_ACC_DETECT_22DB_R,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_charger_resources[] = {
{
.name = "MAIN_CH_UNPLUG_DET",
.start = AB8500_INT_MAIN_CH_UNPLUG_DET,
.end = AB8500_INT_MAIN_CH_UNPLUG_DET,
.flags = IORESOURCE_IRQ,
},
{
.name = "MAIN_CHARGE_PLUG_DET",
.start = AB8500_INT_MAIN_CH_PLUG_DET,
.end = AB8500_INT_MAIN_CH_PLUG_DET,
.flags = IORESOURCE_IRQ,
},
{
.name = "VBUS_DET_R",
.start = AB8500_INT_VBUS_DET_R,
.end = AB8500_INT_VBUS_DET_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "VBUS_DET_F",
.start = AB8500_INT_VBUS_DET_F,
.end = AB8500_INT_VBUS_DET_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_LINK_STATUS",
.start = AB8500_INT_USB_LINK_STATUS,
.end = AB8500_INT_USB_LINK_STATUS,
.flags = IORESOURCE_IRQ,
},
{
.name = "VBUS_OVV",
.start = AB8500_INT_VBUS_OVV,
.end = AB8500_INT_VBUS_OVV,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_CH_TH_PROT_R",
.start = AB8500_INT_USB_CH_TH_PROT_R,
.end = AB8500_INT_USB_CH_TH_PROT_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_CH_TH_PROT_F",
.start = AB8500_INT_USB_CH_TH_PROT_F,
.end = AB8500_INT_USB_CH_TH_PROT_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "MAIN_EXT_CH_NOT_OK",
.start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
.end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
.flags = IORESOURCE_IRQ,
},
{
.name = "MAIN_CH_TH_PROT_R",
.start = AB8500_INT_MAIN_CH_TH_PROT_R,
.end = AB8500_INT_MAIN_CH_TH_PROT_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "MAIN_CH_TH_PROT_F",
.start = AB8500_INT_MAIN_CH_TH_PROT_F,
.end = AB8500_INT_MAIN_CH_TH_PROT_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_CHARGER_NOT_OKR",
.start = AB8500_INT_USB_CHARGER_NOT_OKR,
.end = AB8500_INT_USB_CHARGER_NOT_OKR,
.flags = IORESOURCE_IRQ,
},
{
.name = "CH_WD_EXP",
.start = AB8500_INT_CH_WD_EXP,
.end = AB8500_INT_CH_WD_EXP,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_btemp_resources[] = {
{
.name = "BAT_CTRL_INDB",
.start = AB8500_INT_BAT_CTRL_INDB,
.end = AB8500_INT_BAT_CTRL_INDB,
.flags = IORESOURCE_IRQ,
},
{
.name = "BTEMP_LOW",
.start = AB8500_INT_BTEMP_LOW,
.end = AB8500_INT_BTEMP_LOW,
.flags = IORESOURCE_IRQ,
},
{
.name = "BTEMP_HIGH",
.start = AB8500_INT_BTEMP_HIGH,
.end = AB8500_INT_BTEMP_HIGH,
.flags = IORESOURCE_IRQ,
},
{
.name = "BTEMP_LOW_MEDIUM",
.start = AB8500_INT_BTEMP_LOW_MEDIUM,
.end = AB8500_INT_BTEMP_LOW_MEDIUM,
.flags = IORESOURCE_IRQ,
},
{
.name = "BTEMP_MEDIUM_HIGH",
.start = AB8500_INT_BTEMP_MEDIUM_HIGH,
.end = AB8500_INT_BTEMP_MEDIUM_HIGH,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_fg_resources[] = {
{
.name = "NCONV_ACCU",
.start = AB8500_INT_CCN_CONV_ACC,
.end = AB8500_INT_CCN_CONV_ACC,
.flags = IORESOURCE_IRQ,
},
{
.name = "BATT_OVV",
.start = AB8500_INT_BATT_OVV,
.end = AB8500_INT_BATT_OVV,
.flags = IORESOURCE_IRQ,
},
{
.name = "LOW_BAT_F",
.start = AB8500_INT_LOW_BAT_F,
.end = AB8500_INT_LOW_BAT_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "LOW_BAT_R",
.start = AB8500_INT_LOW_BAT_R,
.end = AB8500_INT_LOW_BAT_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "CC_INT_CALIB",
.start = AB8500_INT_CC_INT_CALIB,
.end = AB8500_INT_CC_INT_CALIB,
.flags = IORESOURCE_IRQ,
},
{
.name = "CCEOC",
.start = AB8500_INT_CCEOC,
.end = AB8500_INT_CCEOC,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_chargalg_resources[] = {};
#ifdef CONFIG_DEBUG_FS
static struct resource __devinitdata ab8500_debug_resources[] = {
{
.name = "IRQ_FIRST",
.start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
.end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
.flags = IORESOURCE_IRQ,
},
{
.name = "IRQ_LAST",
.start = AB8500_INT_XTAL32K_KO,
.end = AB8500_INT_XTAL32K_KO,
.flags = IORESOURCE_IRQ,
},
};
#endif
static struct resource __devinitdata ab8500_usb_resources[] = {
{
.name = "ID_WAKEUP_R",
.start = AB8500_INT_ID_WAKEUP_R,
.end = AB8500_INT_ID_WAKEUP_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "ID_WAKEUP_F",
.start = AB8500_INT_ID_WAKEUP_F,
.end = AB8500_INT_ID_WAKEUP_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "VBUS_DET_F",
.start = AB8500_INT_VBUS_DET_F,
.end = AB8500_INT_VBUS_DET_F,
.flags = IORESOURCE_IRQ,
},
{
.name = "VBUS_DET_R",
.start = AB8500_INT_VBUS_DET_R,
.end = AB8500_INT_VBUS_DET_R,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_LINK_STATUS",
.start = AB8500_INT_USB_LINK_STATUS,
.end = AB8500_INT_USB_LINK_STATUS,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_ADP_PROBE_PLUG",
.start = AB8500_INT_ADP_PROBE_PLUG,
.end = AB8500_INT_ADP_PROBE_PLUG,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB_ADP_PROBE_UNPLUG",
.start = AB8500_INT_ADP_PROBE_UNPLUG,
.end = AB8500_INT_ADP_PROBE_UNPLUG,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8505_iddet_resources[] = {
{
.name = "KeyDeglitch",
.start = AB8505_INT_KEYDEGLITCH,
.end = AB8505_INT_KEYDEGLITCH,
.flags = IORESOURCE_IRQ,
},
{
.name = "KP",
.start = AB8505_INT_KP,
.end = AB8505_INT_KP,
.flags = IORESOURCE_IRQ,
},
{
.name = "IKP",
.start = AB8505_INT_IKP,
.end = AB8505_INT_IKP,
.flags = IORESOURCE_IRQ,
},
{
.name = "IKR",
.start = AB8505_INT_IKR,
.end = AB8505_INT_IKR,
.flags = IORESOURCE_IRQ,
},
{
.name = "KeyStuck",
.start = AB8505_INT_KEYSTUCK,
.end = AB8505_INT_KEYSTUCK,
.flags = IORESOURCE_IRQ,
},
};
static struct resource __devinitdata ab8500_temp_resources[] = {
{
.name = "AB8500_TEMP_WARM",
.start = AB8500_INT_TEMP_WARM,
.end = AB8500_INT_TEMP_WARM,
.flags = IORESOURCE_IRQ,
},
};
static struct mfd_cell __devinitdata abx500_common_devs[] = {
#ifdef CONFIG_DEBUG_FS
{
.name = "ab8500-debug",
.num_resources = ARRAY_SIZE(ab8500_debug_resources),
.resources = ab8500_debug_resources,
},
#endif
{
.name = "ab8500-sysctrl",
},
{
.name = "ab8500-regulator",
},
{
.name = "ab8500-gpadc",
.num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
.resources = ab8500_gpadc_resources,
},
{
.name = "ab8500-rtc",
.num_resources = ARRAY_SIZE(ab8500_rtc_resources),
.resources = ab8500_rtc_resources,
},
{
.name = "ab8500-acc-det",
.num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
.resources = ab8500_av_acc_detect_resources,
},
{
.name = "ab8500-poweron-key",
.num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
.resources = ab8500_poweronkey_db_resources,
},
{
.name = "ab8500-pwm",
.id = 1,
},
{
.name = "ab8500-pwm",
.id = 2,
},
{
.name = "ab8500-pwm",
.id = 3,
},
{ .name = "ab8500-leds", },
{
.name = "ab8500-denc",
},
{
.name = "ab8500-temp",
.num_resources = ARRAY_SIZE(ab8500_temp_resources),
.resources = ab8500_temp_resources,
},
};
static struct mfd_cell __devinitdata ab8500_bm_devs[] = {
{
.name = "ab8500-charger",
.num_resources = ARRAY_SIZE(ab8500_charger_resources),
.resources = ab8500_charger_resources,
},
{
.name = "ab8500-btemp",
.num_resources = ARRAY_SIZE(ab8500_btemp_resources),
.resources = ab8500_btemp_resources,
},
{
.name = "ab8500-fg",
.num_resources = ARRAY_SIZE(ab8500_fg_resources),
.resources = ab8500_fg_resources,
},
{
.name = "ab8500-chargalg",
.num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
.resources = ab8500_chargalg_resources,
},
};
static struct mfd_cell __devinitdata ab8500_devs[] = {
{
.name = "ab8500-gpio",
.num_resources = ARRAY_SIZE(ab8500_gpio_resources),
.resources = ab8500_gpio_resources,
},
{
.name = "ab8500-usb",
.num_resources = ARRAY_SIZE(ab8500_usb_resources),
.resources = ab8500_usb_resources,
},
{
.name = "ab8500-codec",
},
};
static struct mfd_cell __devinitdata ab9540_devs[] = {
{
.name = "ab8500-gpio",
.num_resources = ARRAY_SIZE(ab9540_gpio_resources),
.resources = ab9540_gpio_resources,
},
{
.name = "ab9540-usb",
.num_resources = ARRAY_SIZE(ab8500_usb_resources),
.resources = ab8500_usb_resources,
},
{
.name = "ab9540-codec",
},
};
/* Device list common to ab9540 and ab8505 */
static struct mfd_cell __devinitdata ab9540_ab8505_devs[] = {
{
.name = "ab-iddet",
.num_resources = ARRAY_SIZE(ab8505_iddet_resources),
.resources = ab8505_iddet_resources,
},
};
static ssize_t show_chip_id(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ab8500 *ab8500;
ab8500 = dev_get_drvdata(dev);
return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
}
/*
* ab8500 has switched off due to (SWITCH_OFF_STATUS):
* 0x01 Swoff bit programming
* 0x02 Thermal protection activation
* 0x04 Vbat lower then BattOk falling threshold
* 0x08 Watchdog expired
* 0x10 Non presence of 32kHz clock
* 0x20 Battery level lower than power on reset threshold
* 0x40 Power on key 1 pressed longer than 10 seconds
* 0x80 DB8500 thermal shutdown
*/
static ssize_t show_switch_off_status(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
u8 value;
struct ab8500 *ab8500;
ab8500 = dev_get_drvdata(dev);
ret = get_register_interruptible(ab8500, AB8500_RTC,
AB8500_SWITCH_OFF_STATUS, &value);
if (ret < 0)
return ret;
return sprintf(buf, "%#x\n", value);
}
/*
* ab8500 has turned on due to (TURN_ON_STATUS):
* 0x01 PORnVbat
* 0x02 PonKey1dbF
* 0x04 PonKey2dbF
* 0x08 RTCAlarm
* 0x10 MainChDet
* 0x20 VbusDet
* 0x40 UsbIDDetect
* 0x80 Reserved
*/
static ssize_t show_turn_on_status(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
u8 value;
struct ab8500 *ab8500;
ab8500 = dev_get_drvdata(dev);
ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
AB8500_TURN_ON_STATUS, &value);
if (ret < 0)
return ret;
return sprintf(buf, "%#x\n", value);
}
static ssize_t show_ab9540_dbbrstn(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ab8500 *ab8500;
int ret;
u8 value;
ab8500 = dev_get_drvdata(dev);
ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
AB9540_MODEM_CTRL2_REG, &value);
if (ret < 0)
return ret;
return sprintf(buf, "%d\n",
(value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
}
static ssize_t store_ab9540_dbbrstn(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct ab8500 *ab8500;
int ret = count;
int err;
u8 bitvalues;
ab8500 = dev_get_drvdata(dev);
if (count > 0) {
switch (buf[0]) {
case '0':
bitvalues = 0;
break;
case '1':
bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
break;
default:
goto exit;
}
err = mask_and_set_register_interruptible(ab8500,
AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
if (err)
dev_info(ab8500->dev,
"Failed to set DBBRSTN %c, err %#x\n",
buf[0], err);
}
exit:
return ret;
}
static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
show_ab9540_dbbrstn, store_ab9540_dbbrstn);
static struct attribute *ab8500_sysfs_entries[] = {
&dev_attr_chip_id.attr,
&dev_attr_switch_off_status.attr,
&dev_attr_turn_on_status.attr,
NULL,
};
static struct attribute *ab9540_sysfs_entries[] = {
&dev_attr_chip_id.attr,
&dev_attr_switch_off_status.attr,
&dev_attr_turn_on_status.attr,
&dev_attr_dbbrstn.attr,
NULL,
};
static struct attribute_group ab8500_attr_group = {
.attrs = ab8500_sysfs_entries,
};
static struct attribute_group ab9540_attr_group = {
.attrs = ab9540_sysfs_entries,
};
static const struct of_device_id ab8500_match[] = {
{
.compatible = "stericsson,ab8500",
.data = (void *)AB8500_VERSION_AB8500,
},
{},
};
static int __devinit ab8500_probe(struct platform_device *pdev)
{
struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
const struct platform_device_id *platid = platform_get_device_id(pdev);
enum ab8500_version version = AB8500_VERSION_UNDEFINED;
struct device_node *np = pdev->dev.of_node;
struct ab8500 *ab8500;
struct resource *resource;
int ret;
int i;
u8 value;
ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL);
if (!ab8500)
return -ENOMEM;
if (plat)
ab8500->irq_base = plat->irq_base;
ab8500->dev = &pdev->dev;
resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!resource) {
ret = -ENODEV;
goto out_free_ab8500;
}
ab8500->irq = resource->start;
ab8500->read = ab8500_i2c_read;
ab8500->write = ab8500_i2c_write;
ab8500->write_masked = ab8500_i2c_write_masked;
mutex_init(&ab8500->lock);
mutex_init(&ab8500->irq_lock);
atomic_set(&ab8500->transfer_ongoing, 0);
platform_set_drvdata(pdev, ab8500);
if (platid)
version = platid->driver_data;
else if (np)
version = (unsigned int)
of_match_device(ab8500_match, &pdev->dev)->data;
if (version != AB8500_VERSION_UNDEFINED)
ab8500->version = version;
else {
ret = get_register_interruptible(ab8500, AB8500_MISC,
AB8500_IC_NAME_REG, &value);
if (ret < 0)
goto out_free_ab8500;
ab8500->version = value;
}
ret = get_register_interruptible(ab8500, AB8500_MISC,
AB8500_REV_REG, &value);
if (ret < 0)
goto out_free_ab8500;
ab8500->chip_id = value;
dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
ab8500_version_str[ab8500->version],
ab8500->chip_id >> 4,
ab8500->chip_id & 0x0F);
/* Configure AB8500 or AB9540 IRQ */
if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
ab8500->mask_size = AB9540_NUM_IRQ_REGS;
ab8500->irq_reg_offset = ab9540_irq_regoffset;
} else {
ab8500->mask_size = AB8500_NUM_IRQ_REGS;
ab8500->irq_reg_offset = ab8500_irq_regoffset;
}
ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
if (!ab8500->mask)
return -ENOMEM;
ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
if (!ab8500->oldmask) {
ret = -ENOMEM;
goto out_freemask;
}
/*
* ab8500 has switched off due to (SWITCH_OFF_STATUS):
* 0x01 Swoff bit programming
* 0x02 Thermal protection activation
* 0x04 Vbat lower then BattOk falling threshold
* 0x08 Watchdog expired
* 0x10 Non presence of 32kHz clock
* 0x20 Battery level lower than power on reset threshold
* 0x40 Power on key 1 pressed longer than 10 seconds
* 0x80 DB8500 thermal shutdown
*/
ret = get_register_interruptible(ab8500, AB8500_RTC,
AB8500_SWITCH_OFF_STATUS, &value);
if (ret < 0)
return ret;
dev_info(ab8500->dev, "switch off status: %#x\n", value);
if (plat && plat->init)
plat->init(ab8500);
/* Clear and mask all interrupts */
for (i = 0; i < ab8500->mask_size; i++) {
/*
* Interrupt register 12 doesn't exist prior to AB8500 version
* 2.0
*/
if (ab8500->irq_reg_offset[i] == 11 &&
is_ab8500_1p1_or_earlier(ab8500))
continue;
get_register_interruptible(ab8500, AB8500_INTERRUPT,
AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
&value);
set_register_interruptible(ab8500, AB8500_INTERRUPT,
AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
}
ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
if (ret)
goto out_freeoldmask;
for (i = 0; i < ab8500->mask_size; i++)
ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
ret = ab8500_irq_init(ab8500, np);
if (ret)
goto out_freeoldmask;
/* Activate this feature only in ab9540 */
/* till tests are done on ab8500 1p2 or later*/
if (is_ab9540(ab8500)) {
ret = request_threaded_irq(ab8500->irq, NULL,
ab8500_hierarchical_irq,
IRQF_ONESHOT | IRQF_NO_SUSPEND,
"ab8500", ab8500);
}
else {
ret = request_threaded_irq(ab8500->irq, NULL,
ab8500_irq,
IRQF_ONESHOT | IRQF_NO_SUSPEND,
"ab8500", ab8500);
if (ret)
goto out_freeoldmask;
}
if (!np) {
ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
ARRAY_SIZE(abx500_common_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
if (is_ab9540(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
ARRAY_SIZE(ab9540_devs), NULL,
ab8500->irq_base);
else
ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
ARRAY_SIZE(ab8500_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
if (is_ab9540(ab8500) || is_ab8505(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
ARRAY_SIZE(ab9540_ab8505_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
}
if (!no_bm) {
/* Add battery management devices */
ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
ARRAY_SIZE(ab8500_bm_devs), NULL,
ab8500->irq_base);
if (ret)
dev_err(ab8500->dev, "error adding bm devices\n");
}
if (is_ab9540(ab8500))
ret = sysfs_create_group(&ab8500->dev->kobj,
&ab9540_attr_group);
else
ret = sysfs_create_group(&ab8500->dev->kobj,
&ab8500_attr_group);
if (ret)
dev_err(ab8500->dev, "error creating sysfs entries\n");
return ret;
out_freeirq:
free_irq(ab8500->irq, ab8500);
out_freeoldmask:
kfree(ab8500->oldmask);
out_freemask:
kfree(ab8500->mask);
out_free_ab8500:
kfree(ab8500);
return ret;
}
static int __devexit ab8500_remove(struct platform_device *pdev)
{
struct ab8500 *ab8500 = platform_get_drvdata(pdev);
if (is_ab9540(ab8500))
sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
else
sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
mfd_remove_devices(ab8500->dev);
free_irq(ab8500->irq, ab8500);
kfree(ab8500->oldmask);
kfree(ab8500->mask);
kfree(ab8500);
return 0;
}
static const struct platform_device_id ab8500_id[] = {
{ "ab8500-core", AB8500_VERSION_AB8500 },
{ "ab8505-i2c", AB8500_VERSION_AB8505 },
{ "ab9540-i2c", AB8500_VERSION_AB9540 },
{ "ab8540-i2c", AB8500_VERSION_AB8540 },
{ }
};
static struct platform_driver ab8500_core_driver = {
.driver = {
.name = "ab8500-core",
.owner = THIS_MODULE,
.of_match_table = ab8500_match,
},
.probe = ab8500_probe,
.remove = __devexit_p(ab8500_remove),
.id_table = ab8500_id,
};
static int __init ab8500_core_init(void)
{
return platform_driver_register(&ab8500_core_driver);
}
static void __exit ab8500_core_exit(void)
{
platform_driver_unregister(&ab8500_core_driver);
}
arch_initcall(ab8500_core_init);
module_exit(ab8500_core_exit);
MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
MODULE_DESCRIPTION("AB8500 MFD core");
MODULE_LICENSE("GPL v2");
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