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linux/drivers/mfd/ab8500-core.c
Mattias Nilsson bc628fd19d mfd: Make use of the ab8500 firmware read-modify-write service 
This patch updates the AB8500 driver to make use of the I2C
read-modify-write service in the PRCMU firmware.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:45:33 +01:00

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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/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/regulator/ab8500.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
#define AB8500_REV_REG 0x80
#define AB8500_IC_NAME_REG 0x82
#define AB8500_SWITCH_OFF_STATUS 0x00
#define AB8500_TURN_ON_STATUS 0x00
#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_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)
{
struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
return set_register_interruptible(ab8500, bank, reg, value);
}
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)
{
struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
return get_register_interruptible(ab8500, bank, reg, value);
}
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)
{
struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
return mask_and_set_register_interruptible(ab8500, bank, reg,
bitmask, bitvalues);
}
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);
}
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);
}
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->irq - ab8500->irq_base;
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->irq - ab8500->irq_base;
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 irqreturn_t ab8500_irq(int irq, void *dev)
{
struct ab8500 *ab8500 = dev;
int i;
dev_vdbg(ab8500->dev, "interrupt\n");
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);
}
return IRQ_HANDLED;
}
static int ab8500_irq_init(struct ab8500 *ab8500)
{
int base = ab8500->irq_base;
int irq;
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;
for (irq = base; irq < base + num_irqs; irq++) {
irq_set_chip_data(irq, ab8500);
irq_set_chip_and_handler(irq, &ab8500_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
}
return 0;
}
static void ab8500_irq_remove(struct ab8500 *ab8500)
{
int base = ab8500->irq_base;
int irq;
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;
for (irq = base; irq < base + num_irqs; irq++) {
#ifdef CONFIG_ARM
set_irq_flags(irq, 0);
#endif
irq_set_chip_and_handler(irq, NULL, NULL);
irq_set_chip_data(irq, NULL);
}
}
/* 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 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-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,
},
{
.name = "ab8500-acc-det",
.num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
.resources = ab8500_av_acc_detect_resources,
},
{
.name = "ab8500-codec",
},
{
.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_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,
},
};
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,
},
};
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,
};
int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
{
struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
int ret;
int i;
u8 value;
if (plat)
ab8500->irq_base = plat->irq_base;
mutex_init(&ab8500->lock);
mutex_init(&ab8500->irq_lock);
if (version != AB8500_VERSION_UNDEFINED)
ab8500->version = version;
else {
ret = get_register_interruptible(ab8500, AB8500_MISC,
AB8500_IC_NAME_REG, &value);
if (ret < 0)
return ret;
ab8500->version = value;
}
ret = get_register_interruptible(ab8500, AB8500_MISC,
AB8500_REV_REG, &value);
if (ret < 0)
return ret;
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", 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;
if (ab8500->irq_base) {
ret = ab8500_irq_init(ab8500);
if (ret)
goto out_freeoldmask;
ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
IRQF_ONESHOT | IRQF_NO_SUSPEND,
"ab8500", ab8500);
if (ret)
goto out_removeirq;
}
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(ab9540_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
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");
else
return ret;
out_freeirq:
if (ab8500->irq_base)
free_irq(ab8500->irq, ab8500);
out_removeirq:
if (ab8500->irq_base)
ab8500_irq_remove(ab8500);
out_freeoldmask:
kfree(ab8500->oldmask);
out_freemask:
kfree(ab8500->mask);
return ret;
}
int __devexit ab8500_exit(struct ab8500 *ab8500)
{
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);
if (ab8500->irq_base) {
free_irq(ab8500->irq, ab8500);
ab8500_irq_remove(ab8500);
}
kfree(ab8500->oldmask);
kfree(ab8500->mask);
return 0;
}
MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
MODULE_DESCRIPTION("AB8500 MFD core");
MODULE_LICENSE("GPL v2");
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