diff options
Diffstat (limited to 'drivers/mfd/max8925-core.c')
| -rw-r--r-- | drivers/mfd/max8925-core.c | 918 |
1 files changed, 918 insertions, 0 deletions
diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c new file mode 100644 index 000000000..0af6833b4 --- /dev/null +++ b/drivers/mfd/max8925-core.c @@ -0,0 +1,918 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Base driver for Maxim MAX8925 + * + * Copyright (C) 2009-2010 Marvell International Ltd. + * Haojian Zhuang <haojian.zhuang@marvell.com> + */ + +#include <linux/kernel.h> +#include <linux/init.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); +} |