// 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> static const 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 const 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 const 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 const 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 const 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 const struct resource sd1_resources[] = { {0x06, 0x06, "sdv", IORESOURCE_REG, }, }; static const struct resource sd2_resources[] = { {0x09, 0x09, "sdv", IORESOURCE_REG, }, }; static const struct resource sd3_resources[] = { {0x0c, 0x0c, "sdv", IORESOURCE_REG, }, }; static const struct resource ldo1_resources[] = { {0x1a, 0x1a, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo2_resources[] = { {0x1e, 0x1e, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo3_resources[] = { {0x22, 0x22, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo4_resources[] = { {0x26, 0x26, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo5_resources[] = { {0x2a, 0x2a, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo6_resources[] = { {0x2e, 0x2e, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo7_resources[] = { {0x32, 0x32, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo8_resources[] = { {0x36, 0x36, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo9_resources[] = { {0x3a, 0x3a, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo10_resources[] = { {0x3e, 0x3e, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo11_resources[] = { {0x42, 0x42, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo12_resources[] = { {0x46, 0x46, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo13_resources[] = { {0x4a, 0x4a, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo14_resources[] = { {0x4e, 0x4e, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo15_resources[] = { {0x52, 0x52, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo16_resources[] = { {0x12, 0x12, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo17_resources[] = { {0x16, 0x16, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo18_resources[] = { {0x74, 0x74, "ldov", IORESOURCE_REG, }, }; static const struct resource ldo19_resources[] = { {0x5e, 0x5e, "ldov", IORESOURCE_REG, }, }; static const 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 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); }