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linux/drivers/mfd/max8925-core.c
Rob Herring 9bd09f345e mfd: Kill off set_irq_flags usage 
set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-11 15:09:01 +01:00

927 lines
23 KiB
C
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/*
* Base driver for Maxim MAX8925
*
* Copyright (C) 2009-2010 Marvell International Ltd.
* Haojian Zhuang <haojian.zhuang@marvell.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/platform_device.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max8925.h>
#include <linux/of.h>
#include <linux/of_platform.h>
static struct resource bk_resources[] = {
{ 0x84, 0x84, "mode control", IORESOURCE_REG, },
{ 0x85, 0x85, "control", IORESOURCE_REG, },
};
static struct mfd_cell bk_devs[] = {
{
.name = "max8925-backlight",
.num_resources = ARRAY_SIZE(bk_resources),
.resources = &bk_resources[0],
.id = -1,
},
};
static struct resource touch_resources[] = {
{
.name = "max8925-tsc",
.start = MAX8925_TSC_IRQ,
.end = MAX8925_ADC_RES_END,
.flags = IORESOURCE_REG,
},
};
static const struct mfd_cell touch_devs[] = {
{
.name = "max8925-touch",
.num_resources = 1,
.resources = &touch_resources[0],
.id = -1,
},
};
static struct resource power_supply_resources[] = {
{
.name = "max8925-power",
.start = MAX8925_CHG_IRQ1,
.end = MAX8925_CHG_IRQ1_MASK,
.flags = IORESOURCE_REG,
},
};
static const struct mfd_cell power_devs[] = {
{
.name = "max8925-power",
.num_resources = 1,
.resources = &power_supply_resources[0],
.id = -1,
},
};
static struct resource rtc_resources[] = {
{
.name = "max8925-rtc",
.start = MAX8925_IRQ_RTC_ALARM0,
.end = MAX8925_IRQ_RTC_ALARM0,
.flags = IORESOURCE_IRQ,
},
};
static const struct mfd_cell rtc_devs[] = {
{
.name = "max8925-rtc",
.num_resources = 1,
.resources = &rtc_resources[0],
.id = -1,
},
};
static struct resource onkey_resources[] = {
{
.name = "max8925-onkey",
.start = MAX8925_IRQ_GPM_SW_R,
.end = MAX8925_IRQ_GPM_SW_R,
.flags = IORESOURCE_IRQ,
}, {
.name = "max8925-onkey",
.start = MAX8925_IRQ_GPM_SW_F,
.end = MAX8925_IRQ_GPM_SW_F,
.flags = IORESOURCE_IRQ,
},
};
static const struct mfd_cell onkey_devs[] = {
{
.name = "max8925-onkey",
.num_resources = 2,
.resources = &onkey_resources[0],
.id = -1,
},
};
static struct resource sd1_resources[] = {
{0x06, 0x06, "sdv", IORESOURCE_REG, },
};
static struct resource sd2_resources[] = {
{0x09, 0x09, "sdv", IORESOURCE_REG, },
};
static struct resource sd3_resources[] = {
{0x0c, 0x0c, "sdv", IORESOURCE_REG, },
};
static struct resource ldo1_resources[] = {
{0x1a, 0x1a, "ldov", IORESOURCE_REG, },
};
static struct resource ldo2_resources[] = {
{0x1e, 0x1e, "ldov", IORESOURCE_REG, },
};
static struct resource ldo3_resources[] = {
{0x22, 0x22, "ldov", IORESOURCE_REG, },
};
static struct resource ldo4_resources[] = {
{0x26, 0x26, "ldov", IORESOURCE_REG, },
};
static struct resource ldo5_resources[] = {
{0x2a, 0x2a, "ldov", IORESOURCE_REG, },
};
static struct resource ldo6_resources[] = {
{0x2e, 0x2e, "ldov", IORESOURCE_REG, },
};
static struct resource ldo7_resources[] = {
{0x32, 0x32, "ldov", IORESOURCE_REG, },
};
static struct resource ldo8_resources[] = {
{0x36, 0x36, "ldov", IORESOURCE_REG, },
};
static struct resource ldo9_resources[] = {
{0x3a, 0x3a, "ldov", IORESOURCE_REG, },
};
static struct resource ldo10_resources[] = {
{0x3e, 0x3e, "ldov", IORESOURCE_REG, },
};
static struct resource ldo11_resources[] = {
{0x42, 0x42, "ldov", IORESOURCE_REG, },
};
static struct resource ldo12_resources[] = {
{0x46, 0x46, "ldov", IORESOURCE_REG, },
};
static struct resource ldo13_resources[] = {
{0x4a, 0x4a, "ldov", IORESOURCE_REG, },
};
static struct resource ldo14_resources[] = {
{0x4e, 0x4e, "ldov", IORESOURCE_REG, },
};
static struct resource ldo15_resources[] = {
{0x52, 0x52, "ldov", IORESOURCE_REG, },
};
static struct resource ldo16_resources[] = {
{0x12, 0x12, "ldov", IORESOURCE_REG, },
};
static struct resource ldo17_resources[] = {
{0x16, 0x16, "ldov", IORESOURCE_REG, },
};
static struct resource ldo18_resources[] = {
{0x74, 0x74, "ldov", IORESOURCE_REG, },
};
static struct resource ldo19_resources[] = {
{0x5e, 0x5e, "ldov", IORESOURCE_REG, },
};
static struct resource ldo20_resources[] = {
{0x9e, 0x9e, "ldov", IORESOURCE_REG, },
};
static struct mfd_cell reg_devs[] = {
{
.name = "max8925-regulator",
.id = 0,
.num_resources = ARRAY_SIZE(sd1_resources),
.resources = sd1_resources,
}, {
.name = "max8925-regulator",
.id = 1,
.num_resources = ARRAY_SIZE(sd2_resources),
.resources = sd2_resources,
}, {
.name = "max8925-regulator",
.id = 2,
.num_resources = ARRAY_SIZE(sd3_resources),
.resources = sd3_resources,
}, {
.name = "max8925-regulator",
.id = 3,
.num_resources = ARRAY_SIZE(ldo1_resources),
.resources = ldo1_resources,
}, {
.name = "max8925-regulator",
.id = 4,
.num_resources = ARRAY_SIZE(ldo2_resources),
.resources = ldo2_resources,
}, {
.name = "max8925-regulator",
.id = 5,
.num_resources = ARRAY_SIZE(ldo3_resources),
.resources = ldo3_resources,
}, {
.name = "max8925-regulator",
.id = 6,
.num_resources = ARRAY_SIZE(ldo4_resources),
.resources = ldo4_resources,
}, {
.name = "max8925-regulator",
.id = 7,
.num_resources = ARRAY_SIZE(ldo5_resources),
.resources = ldo5_resources,
}, {
.name = "max8925-regulator",
.id = 8,
.num_resources = ARRAY_SIZE(ldo6_resources),
.resources = ldo6_resources,
}, {
.name = "max8925-regulator",
.id = 9,
.num_resources = ARRAY_SIZE(ldo7_resources),
.resources = ldo7_resources,
}, {
.name = "max8925-regulator",
.id = 10,
.num_resources = ARRAY_SIZE(ldo8_resources),
.resources = ldo8_resources,
}, {
.name = "max8925-regulator",
.id = 11,
.num_resources = ARRAY_SIZE(ldo9_resources),
.resources = ldo9_resources,
}, {
.name = "max8925-regulator",
.id = 12,
.num_resources = ARRAY_SIZE(ldo10_resources),
.resources = ldo10_resources,
}, {
.name = "max8925-regulator",
.id = 13,
.num_resources = ARRAY_SIZE(ldo11_resources),
.resources = ldo11_resources,
}, {
.name = "max8925-regulator",
.id = 14,
.num_resources = ARRAY_SIZE(ldo12_resources),
.resources = ldo12_resources,
}, {
.name = "max8925-regulator",
.id = 15,
.num_resources = ARRAY_SIZE(ldo13_resources),
.resources = ldo13_resources,
}, {
.name = "max8925-regulator",
.id = 16,
.num_resources = ARRAY_SIZE(ldo14_resources),
.resources = ldo14_resources,
}, {
.name = "max8925-regulator",
.id = 17,
.num_resources = ARRAY_SIZE(ldo15_resources),
.resources = ldo15_resources,
}, {
.name = "max8925-regulator",
.id = 18,
.num_resources = ARRAY_SIZE(ldo16_resources),
.resources = ldo16_resources,
}, {
.name = "max8925-regulator",
.id = 19,
.num_resources = ARRAY_SIZE(ldo17_resources),
.resources = ldo17_resources,
}, {
.name = "max8925-regulator",
.id = 20,
.num_resources = ARRAY_SIZE(ldo18_resources),
.resources = ldo18_resources,
}, {
.name = "max8925-regulator",
.id = 21,
.num_resources = ARRAY_SIZE(ldo19_resources),
.resources = ldo19_resources,
}, {
.name = "max8925-regulator",
.id = 22,
.num_resources = ARRAY_SIZE(ldo20_resources),
.resources = ldo20_resources,
},
};
enum {
FLAGS_ADC = 1, /* register in ADC component */
FLAGS_RTC, /* register in RTC component */
};
struct max8925_irq_data {
int reg;
int mask_reg;
int enable; /* enable or not */
int offs; /* bit offset in mask register */
int flags;
int tsc_irq;
};
static struct max8925_irq_data max8925_irqs[] = {
[MAX8925_IRQ_VCHG_DC_OVP] = {
.reg = MAX8925_CHG_IRQ1,
.mask_reg = MAX8925_CHG_IRQ1_MASK,
.offs = 1 << 0,
},
[MAX8925_IRQ_VCHG_DC_F] = {
.reg = MAX8925_CHG_IRQ1,
.mask_reg = MAX8925_CHG_IRQ1_MASK,
.offs = 1 << 1,
},
[MAX8925_IRQ_VCHG_DC_R] = {
.reg = MAX8925_CHG_IRQ1,
.mask_reg = MAX8925_CHG_IRQ1_MASK,
.offs = 1 << 2,
},
[MAX8925_IRQ_VCHG_THM_OK_R] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 0,
},
[MAX8925_IRQ_VCHG_THM_OK_F] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 1,
},
[MAX8925_IRQ_VCHG_SYSLOW_F] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 2,
},
[MAX8925_IRQ_VCHG_SYSLOW_R] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 3,
},
[MAX8925_IRQ_VCHG_RST] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 4,
},
[MAX8925_IRQ_VCHG_DONE] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 5,
},
[MAX8925_IRQ_VCHG_TOPOFF] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 6,
},
[MAX8925_IRQ_VCHG_TMR_FAULT] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
.offs = 1 << 7,
},
[MAX8925_IRQ_GPM_RSTIN] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 0,
},
[MAX8925_IRQ_GPM_MPL] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 1,
},
[MAX8925_IRQ_GPM_SW_3SEC] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 2,
},
[MAX8925_IRQ_GPM_EXTON_F] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 3,
},
[MAX8925_IRQ_GPM_EXTON_R] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 4,
},
[MAX8925_IRQ_GPM_SW_1SEC] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 5,
},
[MAX8925_IRQ_GPM_SW_F] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 6,
},
[MAX8925_IRQ_GPM_SW_R] = {
.reg = MAX8925_ON_OFF_IRQ1,
.mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
.offs = 1 << 7,
},
[MAX8925_IRQ_GPM_SYSCKEN_F] = {
.reg = MAX8925_ON_OFF_IRQ2,
.mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
.offs = 1 << 0,
},
[MAX8925_IRQ_GPM_SYSCKEN_R] = {
.reg = MAX8925_ON_OFF_IRQ2,
.mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
.offs = 1 << 1,
},
[MAX8925_IRQ_RTC_ALARM1] = {
.reg = MAX8925_RTC_IRQ,
.mask_reg = MAX8925_RTC_IRQ_MASK,
.offs = 1 << 2,
.flags = FLAGS_RTC,
},
[MAX8925_IRQ_RTC_ALARM0] = {
.reg = MAX8925_RTC_IRQ,
.mask_reg = MAX8925_RTC_IRQ_MASK,
.offs = 1 << 3,
.flags = FLAGS_RTC,
},
[MAX8925_IRQ_TSC_STICK] = {
.reg = MAX8925_TSC_IRQ,
.mask_reg = MAX8925_TSC_IRQ_MASK,
.offs = 1 << 0,
.flags = FLAGS_ADC,
.tsc_irq = 1,
},
[MAX8925_IRQ_TSC_NSTICK] = {
.reg = MAX8925_TSC_IRQ,
.mask_reg = MAX8925_TSC_IRQ_MASK,
.offs = 1 << 1,
.flags = FLAGS_ADC,
.tsc_irq = 1,
},
};
static inline struct max8925_irq_data *irq_to_max8925(struct max8925_chip *chip,
int irq)
{
return &max8925_irqs[irq - chip->irq_base];
}
static irqreturn_t max8925_irq(int irq, void *data)
{
struct max8925_chip *chip = data;
struct max8925_irq_data *irq_data;
struct i2c_client *i2c;
int read_reg = -1, value = 0;
int i;
for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
irq_data = &max8925_irqs[i];
/* TSC IRQ should be serviced in max8925_tsc_irq() */
if (irq_data->tsc_irq)
continue;
if (irq_data->flags == FLAGS_RTC)
i2c = chip->rtc;
else if (irq_data->flags == FLAGS_ADC)
i2c = chip->adc;
else
i2c = chip->i2c;
if (read_reg != irq_data->reg) {
read_reg = irq_data->reg;
value = max8925_reg_read(i2c, irq_data->reg);
}
if (value & irq_data->enable)
handle_nested_irq(chip->irq_base + i);
}
return IRQ_HANDLED;
}
static irqreturn_t max8925_tsc_irq(int irq, void *data)
{
struct max8925_chip *chip = data;
struct max8925_irq_data *irq_data;
struct i2c_client *i2c;
int read_reg = -1, value = 0;
int i;
for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
irq_data = &max8925_irqs[i];
/* non TSC IRQ should be serviced in max8925_irq() */
if (!irq_data->tsc_irq)
continue;
if (irq_data->flags == FLAGS_RTC)
i2c = chip->rtc;
else if (irq_data->flags == FLAGS_ADC)
i2c = chip->adc;
else
i2c = chip->i2c;
if (read_reg != irq_data->reg) {
read_reg = irq_data->reg;
value = max8925_reg_read(i2c, irq_data->reg);
}
if (value & irq_data->enable)
handle_nested_irq(chip->irq_base + i);
}
return IRQ_HANDLED;
}
static void max8925_irq_lock(struct irq_data *data)
{
struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
mutex_lock(&chip->irq_lock);
}
static void max8925_irq_sync_unlock(struct irq_data *data)
{
struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
struct max8925_irq_data *irq_data;
static unsigned char cache_chg[2] = {0xff, 0xff};
static unsigned char cache_on[2] = {0xff, 0xff};
static unsigned char cache_rtc = 0xff, cache_tsc = 0xff;
unsigned char irq_chg[2], irq_on[2];
unsigned char irq_rtc, irq_tsc;
int i;
/* Load cached value. In initial, all IRQs are masked */
irq_chg[0] = cache_chg[0];
irq_chg[1] = cache_chg[1];
irq_on[0] = cache_on[0];
irq_on[1] = cache_on[1];
irq_rtc = cache_rtc;
irq_tsc = cache_tsc;
for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
irq_data = &max8925_irqs[i];
/* 1 -- disable, 0 -- enable */
switch (irq_data->mask_reg) {
case MAX8925_CHG_IRQ1_MASK:
irq_chg[0] &= ~irq_data->enable;
break;
case MAX8925_CHG_IRQ2_MASK:
irq_chg[1] &= ~irq_data->enable;
break;
case MAX8925_ON_OFF_IRQ1_MASK:
irq_on[0] &= ~irq_data->enable;
break;
case MAX8925_ON_OFF_IRQ2_MASK:
irq_on[1] &= ~irq_data->enable;
break;
case MAX8925_RTC_IRQ_MASK:
irq_rtc &= ~irq_data->enable;
break;
case MAX8925_TSC_IRQ_MASK:
irq_tsc &= ~irq_data->enable;
break;
default:
dev_err(chip->dev, "wrong IRQ\n");
break;
}
}
/* update mask into registers */
if (cache_chg[0] != irq_chg[0]) {
cache_chg[0] = irq_chg[0];
max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK,
irq_chg[0]);
}
if (cache_chg[1] != irq_chg[1]) {
cache_chg[1] = irq_chg[1];
max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK,
irq_chg[1]);
}
if (cache_on[0] != irq_on[0]) {
cache_on[0] = irq_on[0];
max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK,
irq_on[0]);
}
if (cache_on[1] != irq_on[1]) {
cache_on[1] = irq_on[1];
max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK,
irq_on[1]);
}
if (cache_rtc != irq_rtc) {
cache_rtc = irq_rtc;
max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, irq_rtc);
}
if (cache_tsc != irq_tsc) {
cache_tsc = irq_tsc;
max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, irq_tsc);
}
mutex_unlock(&chip->irq_lock);
}
static void max8925_irq_enable(struct irq_data *data)
{
struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
max8925_irqs[data->irq - chip->irq_base].enable
= max8925_irqs[data->irq - chip->irq_base].offs;
}
static void max8925_irq_disable(struct irq_data *data)
{
struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
max8925_irqs[data->irq - chip->irq_base].enable = 0;
}
static struct irq_chip max8925_irq_chip = {
.name = "max8925",
.irq_bus_lock = max8925_irq_lock,
.irq_bus_sync_unlock = max8925_irq_sync_unlock,
.irq_enable = max8925_irq_enable,
.irq_disable = max8925_irq_disable,
};
static int max8925_irq_domain_map(struct irq_domain *d, unsigned int virq,
irq_hw_number_t hw)
{
irq_set_chip_data(virq, d->host_data);
irq_set_chip_and_handler(virq, &max8925_irq_chip, handle_edge_irq);
irq_set_nested_thread(virq, 1);
irq_set_noprobe(virq);
return 0;
}
static const struct irq_domain_ops max8925_irq_domain_ops = {
.map = max8925_irq_domain_map,
.xlate = irq_domain_xlate_onetwocell,
};
static int max8925_irq_init(struct max8925_chip *chip, int irq,
struct max8925_platform_data *pdata)
{
unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
int ret;
struct device_node *node = chip->dev->of_node;
/* clear all interrupts */
max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ1);
max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ2);
max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ1);
max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ2);
max8925_reg_read(chip->rtc, MAX8925_RTC_IRQ);
max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
/* mask all interrupts except for TSC */
max8925_reg_write(chip->rtc, MAX8925_ALARM0_CNTL, 0);
max8925_reg_write(chip->rtc, MAX8925_ALARM1_CNTL, 0);
max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK, 0xff);
max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK, 0xff);
max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK, 0xff);
max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK, 0xff);
max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, 0xff);
mutex_init(&chip->irq_lock);
chip->irq_base = irq_alloc_descs(-1, 0, MAX8925_NR_IRQS, 0);
if (chip->irq_base < 0) {
dev_err(chip->dev, "Failed to allocate interrupts, ret:%d\n",
chip->irq_base);
return -EBUSY;
}
irq_domain_add_legacy(node, MAX8925_NR_IRQS, chip->irq_base, 0,
&max8925_irq_domain_ops, chip);
/* request irq handler for pmic main irq*/
chip->core_irq = irq;
if (!chip->core_irq)
return -EBUSY;
ret = request_threaded_irq(irq, NULL, max8925_irq, flags | IRQF_ONESHOT,
"max8925", chip);
if (ret) {
dev_err(chip->dev, "Failed to request core IRQ: %d\n", ret);
chip->core_irq = 0;
return -EBUSY;
}
/* request irq handler for pmic tsc irq*/
/* mask TSC interrupt */
max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, 0x0f);
if (!pdata->tsc_irq) {
dev_warn(chip->dev, "No interrupt support on TSC IRQ\n");
return 0;
}
chip->tsc_irq = pdata->tsc_irq;
ret = request_threaded_irq(chip->tsc_irq, NULL, max8925_tsc_irq,
flags | IRQF_ONESHOT, "max8925-tsc", chip);
if (ret) {
dev_err(chip->dev, "Failed to request TSC IRQ: %d\n", ret);
chip->tsc_irq = 0;
}
return 0;
}
static void init_regulator(struct max8925_chip *chip,
struct max8925_platform_data *pdata)
{
int ret;
if (!pdata)
return;
if (pdata->sd1) {
reg_devs[0].platform_data = pdata->sd1;
reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->sd2) {
reg_devs[1].platform_data = pdata->sd2;
reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->sd3) {
reg_devs[2].platform_data = pdata->sd3;
reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo1) {
reg_devs[3].platform_data = pdata->ldo1;
reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo2) {
reg_devs[4].platform_data = pdata->ldo2;
reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo3) {
reg_devs[5].platform_data = pdata->ldo3;
reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo4) {
reg_devs[6].platform_data = pdata->ldo4;
reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo5) {
reg_devs[7].platform_data = pdata->ldo5;
reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo6) {
reg_devs[8].platform_data = pdata->ldo6;
reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo7) {
reg_devs[9].platform_data = pdata->ldo7;
reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo8) {
reg_devs[10].platform_data = pdata->ldo8;
reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo9) {
reg_devs[11].platform_data = pdata->ldo9;
reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo10) {
reg_devs[12].platform_data = pdata->ldo10;
reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo11) {
reg_devs[13].platform_data = pdata->ldo11;
reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo12) {
reg_devs[14].platform_data = pdata->ldo12;
reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo13) {
reg_devs[15].platform_data = pdata->ldo13;
reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo14) {
reg_devs[16].platform_data = pdata->ldo14;
reg_devs[16].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo15) {
reg_devs[17].platform_data = pdata->ldo15;
reg_devs[17].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo16) {
reg_devs[18].platform_data = pdata->ldo16;
reg_devs[18].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo17) {
reg_devs[19].platform_data = pdata->ldo17;
reg_devs[19].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo18) {
reg_devs[20].platform_data = pdata->ldo18;
reg_devs[20].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo19) {
reg_devs[21].platform_data = pdata->ldo19;
reg_devs[21].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo20) {
reg_devs[22].platform_data = pdata->ldo20;
reg_devs[22].pdata_size = sizeof(struct regulator_init_data);
}
ret = mfd_add_devices(chip->dev, 0, reg_devs, ARRAY_SIZE(reg_devs),
NULL, 0, NULL);
if (ret < 0) {
dev_err(chip->dev, "Failed to add regulator subdev\n");
return;
}
}
int max8925_device_init(struct max8925_chip *chip,
struct max8925_platform_data *pdata)
{
int ret;
max8925_irq_init(chip, chip->i2c->irq, pdata);
if (pdata && (pdata->power || pdata->touch)) {
/* enable ADC to control internal reference */
max8925_set_bits(chip->i2c, MAX8925_RESET_CNFG, 1, 1);
/* enable internal reference for ADC */
max8925_set_bits(chip->adc, MAX8925_TSC_CNFG1, 3, 2);
/* check for internal reference IRQ */
do {
ret = max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
} while (ret & MAX8925_NREF_OK);
/* enaable ADC scheduler, interval is 1 second */
max8925_set_bits(chip->adc, MAX8925_ADC_SCHED, 3, 2);
}
/* enable Momentary Power Loss */
max8925_set_bits(chip->rtc, MAX8925_MPL_CNTL, 1 << 4, 1 << 4);
ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
ARRAY_SIZE(rtc_devs),
NULL, chip->irq_base, NULL);
if (ret < 0) {
dev_err(chip->dev, "Failed to add rtc subdev\n");
goto out;
}
ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
ARRAY_SIZE(onkey_devs),
NULL, chip->irq_base, NULL);
if (ret < 0) {
dev_err(chip->dev, "Failed to add onkey subdev\n");
goto out_dev;
}
init_regulator(chip, pdata);
if (pdata && pdata->backlight) {
bk_devs[0].platform_data = &pdata->backlight;
bk_devs[0].pdata_size = sizeof(struct max8925_backlight_pdata);
}
ret = mfd_add_devices(chip->dev, 0, bk_devs, ARRAY_SIZE(bk_devs),
NULL, 0, NULL);
if (ret < 0) {
dev_err(chip->dev, "Failed to add backlight subdev\n");
goto out_dev;
}
ret = mfd_add_devices(chip->dev, 0, &power_devs[0],
ARRAY_SIZE(power_devs),
NULL, 0, NULL);
if (ret < 0) {
dev_err(chip->dev,
"Failed to add power supply subdev, err = %d\n", ret);
goto out_dev;
}
if (pdata && pdata->touch) {
ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
ARRAY_SIZE(touch_devs),
NULL, chip->tsc_irq, NULL);
if (ret < 0) {
dev_err(chip->dev, "Failed to add touch subdev\n");
goto out_dev;
}
}
return 0;
out_dev:
mfd_remove_devices(chip->dev);
out:
return ret;
}
void max8925_device_exit(struct max8925_chip *chip)
{
if (chip->core_irq)
free_irq(chip->core_irq, chip);
if (chip->tsc_irq)
free_irq(chip->tsc_irq, chip);
mfd_remove_devices(chip->dev);
}
MODULE_DESCRIPTION("PMIC Driver for Maxim MAX8925");
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com");
MODULE_LICENSE("GPL");
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