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kernel/drivers/mfd/88pm860x-core.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Base driver for Marvell 88PM8607
*
* Copyright (C) 2009 Marvell International Ltd.
*
* Author: Haojian Zhuang <haojian.zhuang@marvell.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/mfd/core.h>
#include <linux/mfd/88pm860x.h>
#include <linux/regulator/machine.h>
#include <linux/power/charger-manager.h>
#define INT_STATUS_NUM 3
static const struct resource bk0_resources[] = {
{2, 2, "duty cycle", IORESOURCE_REG, },
{3, 3, "always on", IORESOURCE_REG, },
{3, 3, "current", IORESOURCE_REG, },
};
static const struct resource bk1_resources[] = {
{4, 4, "duty cycle", IORESOURCE_REG, },
{5, 5, "always on", IORESOURCE_REG, },
{5, 5, "current", IORESOURCE_REG, },
};
static const struct resource bk2_resources[] = {
{6, 6, "duty cycle", IORESOURCE_REG, },
{7, 7, "always on", IORESOURCE_REG, },
{5, 5, "current", IORESOURCE_REG, },
};
static const struct resource led0_resources[] = {
/* RGB1 Red LED */
{0xd, 0xd, "control", IORESOURCE_REG, },
{0xc, 0xc, "blink", IORESOURCE_REG, },
};
static const struct resource led1_resources[] = {
/* RGB1 Green LED */
{0xe, 0xe, "control", IORESOURCE_REG, },
{0xc, 0xc, "blink", IORESOURCE_REG, },
};
static const struct resource led2_resources[] = {
/* RGB1 Blue LED */
{0xf, 0xf, "control", IORESOURCE_REG, },
{0xc, 0xc, "blink", IORESOURCE_REG, },
};
static const struct resource led3_resources[] = {
/* RGB2 Red LED */
{0x9, 0x9, "control", IORESOURCE_REG, },
{0x8, 0x8, "blink", IORESOURCE_REG, },
};
static const struct resource led4_resources[] = {
/* RGB2 Green LED */
{0xa, 0xa, "control", IORESOURCE_REG, },
{0x8, 0x8, "blink", IORESOURCE_REG, },
};
static const struct resource led5_resources[] = {
/* RGB2 Blue LED */
{0xb, 0xb, "control", IORESOURCE_REG, },
{0x8, 0x8, "blink", IORESOURCE_REG, },
};
static const struct resource buck1_resources[] = {
{0x24, 0x24, "buck set", IORESOURCE_REG, },
};
static const struct resource buck2_resources[] = {
{0x25, 0x25, "buck set", IORESOURCE_REG, },
};
static const struct resource buck3_resources[] = {
{0x26, 0x26, "buck set", IORESOURCE_REG, },
};
static const struct resource ldo1_resources[] = {
{0x10, 0x10, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo2_resources[] = {
{0x11, 0x11, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo3_resources[] = {
{0x12, 0x12, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo4_resources[] = {
{0x13, 0x13, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo5_resources[] = {
{0x14, 0x14, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo6_resources[] = {
{0x15, 0x15, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo7_resources[] = {
{0x16, 0x16, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo8_resources[] = {
{0x17, 0x17, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo9_resources[] = {
{0x18, 0x18, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo10_resources[] = {
{0x19, 0x19, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo12_resources[] = {
{0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo_vibrator_resources[] = {
{0x28, 0x28, "ldo set", IORESOURCE_REG, },
};
static const struct resource ldo14_resources[] = {
{0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
};
static struct resource touch_resources[] = {
{PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
};
static struct resource onkey_resources[] = {
{PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
};
static struct resource codec_resources[] = {
/* Headset microphone insertion or removal */
{PM8607_IRQ_MICIN, PM8607_IRQ_MICIN, "micin", IORESOURCE_IRQ,},
/* Hook-switch press or release */
{PM8607_IRQ_HOOK, PM8607_IRQ_HOOK, "hook", IORESOURCE_IRQ,},
/* Headset insertion or removal */
{PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
/* Audio short */
{PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short",
IORESOURCE_IRQ,},
};
static struct resource battery_resources[] = {
{PM8607_IRQ_CC, PM8607_IRQ_CC, "columb counter", IORESOURCE_IRQ,},
{PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery", IORESOURCE_IRQ,},
};
static struct resource charger_resources[] = {
{PM8607_IRQ_CHG, PM8607_IRQ_CHG, "charger detect", IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_DONE, PM8607_IRQ_CHG_DONE, "charging done",
IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_FAIL, PM8607_IRQ_CHG_FAIL, "charging timeout",
IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault",
IORESOURCE_IRQ,},
{PM8607_IRQ_GPADC1, PM8607_IRQ_GPADC1, "battery temperature",
IORESOURCE_IRQ,},
{PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
{PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage", IORESOURCE_IRQ,},
};
static struct resource rtc_resources[] = {
{PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
};
static struct mfd_cell bk_devs[] = {
{
.name = "88pm860x-backlight",
.id = 0,
.num_resources = ARRAY_SIZE(bk0_resources),
.resources = bk0_resources,
}, {
.name = "88pm860x-backlight",
.id = 1,
.num_resources = ARRAY_SIZE(bk1_resources),
.resources = bk1_resources,
}, {
.name = "88pm860x-backlight",
.id = 2,
.num_resources = ARRAY_SIZE(bk2_resources),
.resources = bk2_resources,
},
};
static struct mfd_cell led_devs[] = {
{
.name = "88pm860x-led",
.id = 0,
.num_resources = ARRAY_SIZE(led0_resources),
.resources = led0_resources,
}, {
.name = "88pm860x-led",
.id = 1,
.num_resources = ARRAY_SIZE(led1_resources),
.resources = led1_resources,
}, {
.name = "88pm860x-led",
.id = 2,
.num_resources = ARRAY_SIZE(led2_resources),
.resources = led2_resources,
}, {
.name = "88pm860x-led",
.id = 3,
.num_resources = ARRAY_SIZE(led3_resources),
.resources = led3_resources,
}, {
.name = "88pm860x-led",
.id = 4,
.num_resources = ARRAY_SIZE(led4_resources),
.resources = led4_resources,
}, {
.name = "88pm860x-led",
.id = 5,
.num_resources = ARRAY_SIZE(led5_resources),
.resources = led5_resources,
},
};
static struct mfd_cell reg_devs[] = {
{
.name = "88pm860x-regulator",
.id = 0,
.num_resources = ARRAY_SIZE(buck1_resources),
.resources = buck1_resources,
}, {
.name = "88pm860x-regulator",
.id = 1,
.num_resources = ARRAY_SIZE(buck2_resources),
.resources = buck2_resources,
}, {
.name = "88pm860x-regulator",
.id = 2,
.num_resources = ARRAY_SIZE(buck3_resources),
.resources = buck3_resources,
}, {
.name = "88pm860x-regulator",
.id = 3,
.num_resources = ARRAY_SIZE(ldo1_resources),
.resources = ldo1_resources,
}, {
.name = "88pm860x-regulator",
.id = 4,
.num_resources = ARRAY_SIZE(ldo2_resources),
.resources = ldo2_resources,
}, {
.name = "88pm860x-regulator",
.id = 5,
.num_resources = ARRAY_SIZE(ldo3_resources),
.resources = ldo3_resources,
}, {
.name = "88pm860x-regulator",
.id = 6,
.num_resources = ARRAY_SIZE(ldo4_resources),
.resources = ldo4_resources,
}, {
.name = "88pm860x-regulator",
.id = 7,
.num_resources = ARRAY_SIZE(ldo5_resources),
.resources = ldo5_resources,
}, {
.name = "88pm860x-regulator",
.id = 8,
.num_resources = ARRAY_SIZE(ldo6_resources),
.resources = ldo6_resources,
}, {
.name = "88pm860x-regulator",
.id = 9,
.num_resources = ARRAY_SIZE(ldo7_resources),
.resources = ldo7_resources,
}, {
.name = "88pm860x-regulator",
.id = 10,
.num_resources = ARRAY_SIZE(ldo8_resources),
.resources = ldo8_resources,
}, {
.name = "88pm860x-regulator",
.id = 11,
.num_resources = ARRAY_SIZE(ldo9_resources),
.resources = ldo9_resources,
}, {
.name = "88pm860x-regulator",
.id = 12,
.num_resources = ARRAY_SIZE(ldo10_resources),
.resources = ldo10_resources,
}, {
.name = "88pm860x-regulator",
.id = 13,
.num_resources = ARRAY_SIZE(ldo12_resources),
.resources = ldo12_resources,
}, {
.name = "88pm860x-regulator",
.id = 14,
.num_resources = ARRAY_SIZE(ldo_vibrator_resources),
.resources = ldo_vibrator_resources,
}, {
.name = "88pm860x-regulator",
.id = 15,
.num_resources = ARRAY_SIZE(ldo14_resources),
.resources = ldo14_resources,
},
};
static struct mfd_cell touch_devs[] = {
{"88pm860x-touch", -1,},
};
static struct mfd_cell onkey_devs[] = {
{"88pm860x-onkey", -1,},
};
static struct mfd_cell codec_devs[] = {
{"88pm860x-codec", -1,},
};
static struct regulator_consumer_supply preg_supply[] = {
REGULATOR_SUPPLY("preg", "charger-manager"),
};
static struct regulator_init_data preg_init_data = {
.num_consumer_supplies = ARRAY_SIZE(preg_supply),
.consumer_supplies = &preg_supply[0],
};
static struct charger_regulator chg_desc_regulator_data[] = {
{ .regulator_name = "preg", },
};
static struct mfd_cell power_devs[] = {
{"88pm860x-battery", -1,},
{"88pm860x-charger", -1,},
{"88pm860x-preg", -1,},
{"charger-manager", -1,},
};
static struct mfd_cell rtc_devs[] = {
{"88pm860x-rtc", -1,},
};
struct pm860x_irq_data {
int reg;
int mask_reg;
int enable; /* enable or not */
int offs; /* bit offset in mask register */
};
static struct pm860x_irq_data pm860x_irqs[] = {
[PM8607_IRQ_ONKEY] = {
.reg = PM8607_INT_STATUS1,
.mask_reg = PM8607_INT_MASK_1,
.offs = 1 << 0,
},
[PM8607_IRQ_EXTON] = {
.reg = PM8607_INT_STATUS1,
.mask_reg = PM8607_INT_MASK_1,
.offs = 1 << 1,
},
[PM8607_IRQ_CHG] = {
.reg = PM8607_INT_STATUS1,
.mask_reg = PM8607_INT_MASK_1,
.offs = 1 << 2,
},
[PM8607_IRQ_BAT] = {
.reg = PM8607_INT_STATUS1,
.mask_reg = PM8607_INT_MASK_1,
.offs = 1 << 3,
},
[PM8607_IRQ_RTC] = {
.reg = PM8607_INT_STATUS1,
.mask_reg = PM8607_INT_MASK_1,
.offs = 1 << 4,
},
[PM8607_IRQ_CC] = {
.reg = PM8607_INT_STATUS1,
.mask_reg = PM8607_INT_MASK_1,
.offs = 1 << 5,
},
[PM8607_IRQ_VBAT] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 0,
},
[PM8607_IRQ_VCHG] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 1,
},
[PM8607_IRQ_VSYS] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 2,
},
[PM8607_IRQ_TINT] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 3,
},
[PM8607_IRQ_GPADC0] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 4,
},
[PM8607_IRQ_GPADC1] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 5,
},
[PM8607_IRQ_GPADC2] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 6,
},
[PM8607_IRQ_GPADC3] = {
.reg = PM8607_INT_STATUS2,
.mask_reg = PM8607_INT_MASK_2,
.offs = 1 << 7,
},
[PM8607_IRQ_AUDIO_SHORT] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 0,
},
[PM8607_IRQ_PEN] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 1,
},
[PM8607_IRQ_HEADSET] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 2,
},
[PM8607_IRQ_HOOK] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 3,
},
[PM8607_IRQ_MICIN] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 4,
},
[PM8607_IRQ_CHG_FAIL] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 5,
},
[PM8607_IRQ_CHG_DONE] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 6,
},
[PM8607_IRQ_CHG_FAULT] = {
.reg = PM8607_INT_STATUS3,
.mask_reg = PM8607_INT_MASK_3,
.offs = 1 << 7,
},
};
static irqreturn_t pm860x_irq(int irq, void *data)
{
struct pm860x_chip *chip = data;
struct pm860x_irq_data *irq_data;
struct i2c_client *i2c;
int read_reg = -1, value = 0;
int i;
i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
irq_data = &pm860x_irqs[i];
if (read_reg != irq_data->reg) {
read_reg = irq_data->reg;
value = pm860x_reg_read(i2c, irq_data->reg);
}
if (value & irq_data->enable)
handle_nested_irq(chip->irq_base + i);
}
return IRQ_HANDLED;
}
static void pm860x_irq_lock(struct irq_data *data)
{
struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
mutex_lock(&chip->irq_lock);
}
static void pm860x_irq_sync_unlock(struct irq_data *data)
{
struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
struct pm860x_irq_data *irq_data;
struct i2c_client *i2c;
static unsigned char cached[3] = {0x0, 0x0, 0x0};
unsigned char mask[3];
int i;
i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
/* Load cached value. In initial, all IRQs are masked */
for (i = 0; i < 3; i++)
mask[i] = cached[i];
for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
irq_data = &pm860x_irqs[i];
switch (irq_data->mask_reg) {
case PM8607_INT_MASK_1:
mask[0] &= ~irq_data->offs;
mask[0] |= irq_data->enable;
break;
case PM8607_INT_MASK_2:
mask[1] &= ~irq_data->offs;
mask[1] |= irq_data->enable;
break;
case PM8607_INT_MASK_3:
mask[2] &= ~irq_data->offs;
mask[2] |= irq_data->enable;
break;
default:
dev_err(chip->dev, "wrong IRQ\n");
break;
}
}
/* update mask into registers */
for (i = 0; i < 3; i++) {
if (mask[i] != cached[i]) {
cached[i] = mask[i];
pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
}
}
mutex_unlock(&chip->irq_lock);
}
static void pm860x_irq_enable(struct irq_data *data)
{
pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
}
static void pm860x_irq_disable(struct irq_data *data)
{
pm860x_irqs[data->hwirq].enable = 0;
}
static struct irq_chip pm860x_irq_chip = {
.name = "88pm860x",
.irq_bus_lock = pm860x_irq_lock,
.irq_bus_sync_unlock = pm860x_irq_sync_unlock,
.irq_enable = pm860x_irq_enable,
.irq_disable = pm860x_irq_disable,
};
static int pm860x_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, &pm860x_irq_chip, handle_edge_irq);
irq_set_nested_thread(virq, 1);
irq_set_noprobe(virq);
return 0;
}
static const struct irq_domain_ops pm860x_irq_domain_ops = {
.map = pm860x_irq_domain_map,
.xlate = irq_domain_xlate_onetwocell,
};
static int device_irq_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
struct i2c_client *i2c = (chip->id == CHIP_PM8607) ?
chip->client : chip->companion;
unsigned char status_buf[INT_STATUS_NUM];
unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
int data, mask, ret = -EINVAL;
int nr_irqs, irq_base = -1;
struct device_node *node = i2c->dev.of_node;
mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
| PM8607_B0_MISC1_INT_MASK;
data = 0;
chip->irq_mode = 0;
if (pdata && pdata->irq_mode) {
/*
* irq_mode defines the way of clearing interrupt. If it's 1,
* clear IRQ by write. Otherwise, clear it by read.
* This control bit is valid from 88PM8607 B0 steping.
*/
data |= PM8607_B0_MISC1_INT_CLEAR;
chip->irq_mode = 1;
}
ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
if (ret < 0)
goto out;
/* mask all IRQs */
memset(status_buf, 0, INT_STATUS_NUM);
ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
INT_STATUS_NUM, status_buf);
if (ret < 0)
goto out;
if (chip->irq_mode) {
/* clear interrupt status by write */
memset(status_buf, 0xFF, INT_STATUS_NUM);
ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
INT_STATUS_NUM, status_buf);
} else {
/* clear interrupt status by read */
ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
INT_STATUS_NUM, status_buf);
}
if (ret < 0)
goto out;
mutex_init(&chip->irq_lock);
if (pdata && pdata->irq_base)
irq_base = pdata->irq_base;
nr_irqs = ARRAY_SIZE(pm860x_irqs);
chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
if (chip->irq_base < 0) {
dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
chip->irq_base);
ret = -EBUSY;
goto out;
}
irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
&pm860x_irq_domain_ops, chip);
chip->core_irq = i2c->irq;
if (!chip->core_irq)
goto out;
ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq,
flags | IRQF_ONESHOT, "88pm860x", chip);
if (ret) {
dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
chip->core_irq = 0;
}
return 0;
out:
chip->core_irq = 0;
return ret;
}
static void device_irq_exit(struct pm860x_chip *chip)
{
if (chip->core_irq)
free_irq(chip->core_irq, chip);
}
int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
{
int ret = -EIO;
struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
chip->client : chip->companion;
dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
__func__, chip->osc_vote,
chip->osc_status);
mutex_lock(&chip->osc_lock);
/* Update voting status */
chip->osc_vote |= client;
/* If reference group is off - turn on*/
if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
/* Enable Reference group Vsys */
if (pm860x_set_bits(i2c, PM8606_VSYS,
PM8606_VSYS_EN, PM8606_VSYS_EN))
goto out;
/*Enable Internal Oscillator */
if (pm860x_set_bits(i2c, PM8606_MISC,
PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
goto out;
/* Update status (only if writes succeed) */
chip->osc_status = PM8606_REF_GP_OSC_ON;
}
mutex_unlock(&chip->osc_lock);
dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
__func__, chip->osc_vote,
chip->osc_status, ret);
return 0;
out:
mutex_unlock(&chip->osc_lock);
return ret;
}
EXPORT_SYMBOL(pm8606_osc_enable);
int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
{
int ret = -EIO;
struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
chip->client : chip->companion;
dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
__func__, chip->osc_vote,
chip->osc_status);
mutex_lock(&chip->osc_lock);
/* Update voting status */
chip->osc_vote &= ~(client);
/*
* If reference group is off and this is the last client to release
* - turn off
*/
if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
(chip->osc_vote == REF_GP_NO_CLIENTS)) {
chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
/* Disable Reference group Vsys */
if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
goto out;
/* Disable Internal Oscillator */
if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
goto out;
chip->osc_status = PM8606_REF_GP_OSC_OFF;
}
mutex_unlock(&chip->osc_lock);
dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
__func__, chip->osc_vote,
chip->osc_status, ret);
return 0;
out:
mutex_unlock(&chip->osc_lock);
return ret;
}
EXPORT_SYMBOL(pm8606_osc_disable);
static void device_osc_init(struct i2c_client *i2c)
{
struct pm860x_chip *chip = i2c_get_clientdata(i2c);
mutex_init(&chip->osc_lock);
/* init portofino reference group voting and status */
/* Disable Reference group Vsys */
pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
/* Disable Internal Oscillator */
pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
chip->osc_vote = REF_GP_NO_CLIENTS;
chip->osc_status = PM8606_REF_GP_OSC_OFF;
}
static void device_bk_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret, i;
if (pdata && pdata->backlight) {
if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
pdata->num_backlights = ARRAY_SIZE(bk_devs);
for (i = 0; i < pdata->num_backlights; i++) {
bk_devs[i].platform_data = &pdata->backlight[i];
bk_devs[i].pdata_size =
sizeof(struct pm860x_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");
}
static void device_led_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret, i;
if (pdata && pdata->led) {
if (pdata->num_leds > ARRAY_SIZE(led_devs))
pdata->num_leds = ARRAY_SIZE(led_devs);
for (i = 0; i < pdata->num_leds; i++) {
led_devs[i].platform_data = &pdata->led[i];
led_devs[i].pdata_size =
sizeof(struct pm860x_led_pdata);
}
}
ret = mfd_add_devices(chip->dev, 0, led_devs,
ARRAY_SIZE(led_devs), NULL, 0, NULL);
if (ret < 0) {
dev_err(chip->dev, "Failed to add led subdev\n");
return;
}
}
static void device_regulator_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret;
if (pdata == NULL)
return;
if (pdata->buck1) {
reg_devs[0].platform_data = pdata->buck1;
reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->buck2) {
reg_devs[1].platform_data = pdata->buck2;
reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->buck3) {
reg_devs[2].platform_data = pdata->buck3;
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->ldo12) {
reg_devs[13].platform_data = pdata->ldo12;
reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo_vibrator) {
reg_devs[14].platform_data = pdata->ldo_vibrator;
reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
}
if (pdata->ldo14) {
reg_devs[15].platform_data = pdata->ldo14;
reg_devs[15].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;
}
}
static void device_rtc_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret;
if (!pdata)
return;
rtc_devs[0].platform_data = pdata->rtc;
rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
rtc_devs[0].resources = &rtc_resources[0];
ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
ARRAY_SIZE(rtc_devs), &rtc_resources[0],
chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add rtc subdev\n");
}
static void device_touch_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret;
if (pdata == NULL)
return;
touch_devs[0].platform_data = pdata->touch;
touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
touch_devs[0].resources = &touch_resources[0];
ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
ARRAY_SIZE(touch_devs), &touch_resources[0],
chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add touch subdev\n");
}
static void device_power_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret;
if (pdata == NULL)
return;
power_devs[0].platform_data = pdata->power;
power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
power_devs[0].resources = &battery_resources[0],
ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
&battery_resources[0], chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add battery subdev\n");
power_devs[1].platform_data = pdata->power;
power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
power_devs[1].resources = &charger_resources[0],
ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
&charger_resources[0], chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add charger subdev\n");
power_devs[2].platform_data = &preg_init_data;
power_devs[2].pdata_size = sizeof(struct regulator_init_data);
ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
NULL, chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add preg subdev\n");
if (pdata->chg_desc) {
pdata->chg_desc->charger_regulators =
&chg_desc_regulator_data[0];
pdata->chg_desc->num_charger_regulators =
ARRAY_SIZE(chg_desc_regulator_data),
power_devs[3].platform_data = pdata->chg_desc;
power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
NULL, chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add chg-manager subdev\n");
}
}
static void device_onkey_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret;
onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
onkey_devs[0].resources = &onkey_resources[0],
ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
ARRAY_SIZE(onkey_devs), &onkey_resources[0],
chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add onkey subdev\n");
}
static void device_codec_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
int ret;
codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
codec_devs[0].resources = &codec_resources[0],
ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add codec subdev\n");
}
static void device_8607_init(struct pm860x_chip *chip,
struct i2c_client *i2c,
struct pm860x_platform_data *pdata)
{
int data, ret;
ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
if (ret < 0) {
dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
goto out;
}
switch (ret & PM8607_VERSION_MASK) {
case 0x40:
case 0x50:
dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
ret);
break;
default:
dev_err(chip->dev,
"Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
ret);
goto out;
}
ret = pm860x_reg_read(i2c, PM8607_BUCK3);
if (ret < 0) {
dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
goto out;
}
if (ret & PM8607_BUCK3_DOUBLE)
chip->buck3_double = 1;
ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
if (ret < 0) {
dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
goto out;
}
if (pdata && (pdata->i2c_port == PI2C_PORT))
data = PM8607_B0_MISC1_PI2C;
else
data = 0;
ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
if (ret < 0) {
dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
goto out;
}
ret = device_irq_init(chip, pdata);
if (ret < 0)
goto out;
device_regulator_init(chip, pdata);
device_rtc_init(chip, pdata);
device_onkey_init(chip, pdata);
device_touch_init(chip, pdata);
device_power_init(chip, pdata);
device_codec_init(chip, pdata);
out:
return;
}
static void device_8606_init(struct pm860x_chip *chip,
struct i2c_client *i2c,
struct pm860x_platform_data *pdata)
{
device_osc_init(i2c);
device_bk_init(chip, pdata);
device_led_init(chip, pdata);
}
static int pm860x_device_init(struct pm860x_chip *chip,
struct pm860x_platform_data *pdata)
{
chip->core_irq = 0;
switch (chip->id) {
case CHIP_PM8606:
device_8606_init(chip, chip->client, pdata);
break;
case CHIP_PM8607:
device_8607_init(chip, chip->client, pdata);
break;
}
if (chip->companion) {
switch (chip->id) {
case CHIP_PM8607:
device_8606_init(chip, chip->companion, pdata);
break;
case CHIP_PM8606:
device_8607_init(chip, chip->companion, pdata);
break;
}
}
return 0;
}
static void pm860x_device_exit(struct pm860x_chip *chip)
{
device_irq_exit(chip);
mfd_remove_devices(chip->dev);
}
static int verify_addr(struct i2c_client *i2c)
{
unsigned short addr_8607[] = {0x30, 0x34};
unsigned short addr_8606[] = {0x10, 0x11};
int size, i;
if (i2c == NULL)
return 0;
size = ARRAY_SIZE(addr_8606);
for (i = 0; i < size; i++) {
if (i2c->addr == *(addr_8606 + i))
return CHIP_PM8606;
}
size = ARRAY_SIZE(addr_8607);
for (i = 0; i < size; i++) {
if (i2c->addr == *(addr_8607 + i))
return CHIP_PM8607;
}
return 0;
}
static const struct regmap_config pm860x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static int pm860x_dt_init(struct device_node *np,
struct device *dev,
struct pm860x_platform_data *pdata)
{
int ret;
if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
pdata->irq_mode = 1;
ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
&pdata->companion_addr);
if (ret) {
dev_err(dev,
"Not found \"marvell,88pm860x-slave-addr\" property\n");
pdata->companion_addr = 0;
}
return 0;
}
static int pm860x_probe(struct i2c_client *client)
{
struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
struct device_node *node = client->dev.of_node;
struct pm860x_chip *chip;
int ret;
if (node && !pdata) {
/* parse DT to get platform data */
pdata = devm_kzalloc(&client->dev,
sizeof(struct pm860x_platform_data),
GFP_KERNEL);
if (!pdata)
return -ENOMEM;
ret = pm860x_dt_init(node, &client->dev, pdata);
if (ret)
return ret;
} else if (!pdata) {
pr_info("No platform data in %s!\n", __func__);
return -EINVAL;
}
chip = devm_kzalloc(&client->dev,
sizeof(struct pm860x_chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
chip->id = verify_addr(client);
chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
if (IS_ERR(chip->regmap)) {
ret = PTR_ERR(chip->regmap);
dev_err(&client->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
chip->client = client;
i2c_set_clientdata(client, chip);
chip->dev = &client->dev;
dev_set_drvdata(chip->dev, chip);
/*
* Both client and companion client shares same platform driver.
* Driver distinguishes them by pdata->companion_addr.
* pdata->companion_addr is only assigned if companion chip exists.
* At the same time, the companion_addr shouldn't equal to client
* address.
*/
if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
chip->companion_addr = pdata->companion_addr;
chip->companion = i2c_new_dummy_device(chip->client->adapter,
chip->companion_addr);
if (IS_ERR(chip->companion)) {
dev_err(&client->dev,
"Failed to allocate I2C companion device\n");
return PTR_ERR(chip->companion);
}
chip->regmap_companion = regmap_init_i2c(chip->companion,
&pm860x_regmap_config);
if (IS_ERR(chip->regmap_companion)) {
ret = PTR_ERR(chip->regmap_companion);
dev_err(&chip->companion->dev,
"Failed to allocate register map: %d\n", ret);
i2c_unregister_device(chip->companion);
return ret;
}
i2c_set_clientdata(chip->companion, chip);
}
pm860x_device_init(chip, pdata);
return 0;
}
static int pm860x_remove(struct i2c_client *client)
{
struct pm860x_chip *chip = i2c_get_clientdata(client);
pm860x_device_exit(chip);
if (chip->companion) {
regmap_exit(chip->regmap_companion);
i2c_unregister_device(chip->companion);
}
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int pm860x_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct pm860x_chip *chip = i2c_get_clientdata(client);
if (device_may_wakeup(dev) && chip->wakeup_flag)
enable_irq_wake(chip->core_irq);
return 0;
}
static int pm860x_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct pm860x_chip *chip = i2c_get_clientdata(client);
if (device_may_wakeup(dev) && chip->wakeup_flag)
disable_irq_wake(chip->core_irq);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
static const struct i2c_device_id pm860x_id_table[] = {
{ "88PM860x", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
static const struct of_device_id pm860x_dt_ids[] = {
{ .compatible = "marvell,88pm860x", },
{},
};
MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
static struct i2c_driver pm860x_driver = {
.driver = {
.name = "88PM860x",
.pm = &pm860x_pm_ops,
.of_match_table = pm860x_dt_ids,
},
.probe_new = pm860x_probe,
.remove = pm860x_remove,
.id_table = pm860x_id_table,
};
static int __init pm860x_i2c_init(void)
{
int ret;
ret = i2c_add_driver(&pm860x_driver);
if (ret != 0)
pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
return ret;
}
subsys_initcall(pm860x_i2c_init);
static void __exit pm860x_i2c_exit(void)
{
i2c_del_driver(&pm860x_driver);
}
module_exit(pm860x_i2c_exit);
MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
MODULE_LICENSE("GPL");
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