diff options
Diffstat (limited to 'kernel/drivers/mfd/88pm860x-core.c')
| -rw-r--r-- | kernel/drivers/mfd/88pm860x-core.c | 1288 |
1 files changed, 1288 insertions, 0 deletions
diff --git a/kernel/drivers/mfd/88pm860x-core.c b/kernel/drivers/mfd/88pm860x-core.c new file mode 100644 index 000000000..d2a85cde6 --- /dev/null +++ b/kernel/drivers/mfd/88pm860x-core.c @@ -0,0 +1,1288 @@ +/* + * Base driver for Marvell 88PM8607 + * + * Copyright (C) 2009 Marvell International Ltd. + * + * Author: 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/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 struct resource bk0_resources[] = { + {2, 2, "duty cycle", IORESOURCE_REG, }, + {3, 3, "always on", IORESOURCE_REG, }, + {3, 3, "current", IORESOURCE_REG, }, +}; +static struct resource bk1_resources[] = { + {4, 4, "duty cycle", IORESOURCE_REG, }, + {5, 5, "always on", IORESOURCE_REG, }, + {5, 5, "current", IORESOURCE_REG, }, +}; +static struct resource bk2_resources[] = { + {6, 6, "duty cycle", IORESOURCE_REG, }, + {7, 7, "always on", IORESOURCE_REG, }, + {5, 5, "current", IORESOURCE_REG, }, +}; + +static struct resource led0_resources[] = { + /* RGB1 Red LED */ + {0xd, 0xd, "control", IORESOURCE_REG, }, + {0xc, 0xc, "blink", IORESOURCE_REG, }, +}; +static struct resource led1_resources[] = { + /* RGB1 Green LED */ + {0xe, 0xe, "control", IORESOURCE_REG, }, + {0xc, 0xc, "blink", IORESOURCE_REG, }, +}; +static struct resource led2_resources[] = { + /* RGB1 Blue LED */ + {0xf, 0xf, "control", IORESOURCE_REG, }, + {0xc, 0xc, "blink", IORESOURCE_REG, }, +}; +static struct resource led3_resources[] = { + /* RGB2 Red LED */ + {0x9, 0x9, "control", IORESOURCE_REG, }, + {0x8, 0x8, "blink", IORESOURCE_REG, }, +}; +static struct resource led4_resources[] = { + /* RGB2 Green LED */ + {0xa, 0xa, "control", IORESOURCE_REG, }, + {0x8, 0x8, "blink", IORESOURCE_REG, }, +}; +static struct resource led5_resources[] = { + /* RGB2 Blue LED */ + {0xb, 0xb, "control", IORESOURCE_REG, }, + {0x8, 0x8, "blink", IORESOURCE_REG, }, +}; + +static struct resource buck1_resources[] = { + {0x24, 0x24, "buck set", IORESOURCE_REG, }, +}; +static struct resource buck2_resources[] = { + {0x25, 0x25, "buck set", IORESOURCE_REG, }, +}; +static struct resource buck3_resources[] = { + {0x26, 0x26, "buck set", IORESOURCE_REG, }, +}; +static struct resource ldo1_resources[] = { + {0x10, 0x10, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo2_resources[] = { + {0x11, 0x11, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo3_resources[] = { + {0x12, 0x12, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo4_resources[] = { + {0x13, 0x13, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo5_resources[] = { + {0x14, 0x14, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo6_resources[] = { + {0x15, 0x15, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo7_resources[] = { + {0x16, 0x16, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo8_resources[] = { + {0x17, 0x17, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo9_resources[] = { + {0x18, 0x18, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo10_resources[] = { + {0x19, 0x19, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo12_resources[] = { + {0x1a, 0x1a, "ldo set", IORESOURCE_REG, }, +}; +static struct resource ldo_vibrator_resources[] = { + {0x28, 0x28, "ldo set", IORESOURCE_REG, }, +}; +static 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); +#ifdef CONFIG_ARM + set_irq_flags(virq, IRQF_VALID); +#else + irq_set_noprobe(virq); +#endif + return 0; +} + +static 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, + const struct i2c_device_id *id) +{ + 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(chip->client->adapter, + chip->companion_addr); + if (!chip->companion) { + dev_err(&client->dev, + "Failed to allocate I2C companion device\n"); + return -ENODEV; + } + 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 = container_of(dev, struct 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 = container_of(dev, struct 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", + .owner = THIS_MODULE, + .pm = &pm860x_pm_ops, + .of_match_table = pm860x_dt_ids, + }, + .probe = 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"); |