diff options
Diffstat (limited to 'drivers/mfd/max77693-irq.c')
| -rw-r--r-- | drivers/mfd/max77693-irq.c | 336 |
1 files changed, 0 insertions, 336 deletions
diff --git a/drivers/mfd/max77693-irq.c b/drivers/mfd/max77693-irq.c deleted file mode 100644 index 66b58fe7709..00000000000 --- a/drivers/mfd/max77693-irq.c +++ /dev/null @@ -1,336 +0,0 @@ -/* - * max77693-irq.c - Interrupt controller support for MAX77693 - * - * Copyright (C) 2012 Samsung Electronics Co.Ltd - * SangYoung Son <hello.son@samsung.com> - * - * This program is not provided / owned by Maxim Integrated Products. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * This driver is based on max8997-irq.c - */ - -#include <linux/err.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/irqdomain.h> -#include <linux/mfd/max77693.h> -#include <linux/mfd/max77693-private.h> - -static const u8 max77693_mask_reg[] = { - [LED_INT] = MAX77693_LED_REG_FLASH_INT_MASK, - [TOPSYS_INT] = MAX77693_PMIC_REG_TOPSYS_INT_MASK, - [CHG_INT] = MAX77693_CHG_REG_CHG_INT_MASK, - [MUIC_INT1] = MAX77693_MUIC_REG_INTMASK1, - [MUIC_INT2] = MAX77693_MUIC_REG_INTMASK2, - [MUIC_INT3] = MAX77693_MUIC_REG_INTMASK3, -}; - -static struct regmap *max77693_get_regmap(struct max77693_dev *max77693, - enum max77693_irq_source src) -{ - switch (src) { - case LED_INT ... CHG_INT: - return max77693->regmap; - case MUIC_INT1 ... MUIC_INT3: - return max77693->regmap_muic; - default: - return ERR_PTR(-EINVAL); - } -} - -struct max77693_irq_data { - int mask; - enum max77693_irq_source group; -}; - -#define DECLARE_IRQ(idx, _group, _mask) \ - [(idx)] = { .group = (_group), .mask = (_mask) } -static const struct max77693_irq_data max77693_irqs[] = { - DECLARE_IRQ(MAX77693_LED_IRQ_FLED2_OPEN, LED_INT, 1 << 0), - DECLARE_IRQ(MAX77693_LED_IRQ_FLED2_SHORT, LED_INT, 1 << 1), - DECLARE_IRQ(MAX77693_LED_IRQ_FLED1_OPEN, LED_INT, 1 << 2), - DECLARE_IRQ(MAX77693_LED_IRQ_FLED1_SHORT, LED_INT, 1 << 3), - DECLARE_IRQ(MAX77693_LED_IRQ_MAX_FLASH, LED_INT, 1 << 4), - - DECLARE_IRQ(MAX77693_TOPSYS_IRQ_T120C_INT, TOPSYS_INT, 1 << 0), - DECLARE_IRQ(MAX77693_TOPSYS_IRQ_T140C_INT, TOPSYS_INT, 1 << 1), - DECLARE_IRQ(MAX77693_TOPSYS_IRQ_LOWSYS_INT, TOPSYS_INT, 1 << 3), - - DECLARE_IRQ(MAX77693_CHG_IRQ_BYP_I, CHG_INT, 1 << 0), - DECLARE_IRQ(MAX77693_CHG_IRQ_THM_I, CHG_INT, 1 << 2), - DECLARE_IRQ(MAX77693_CHG_IRQ_BAT_I, CHG_INT, 1 << 3), - DECLARE_IRQ(MAX77693_CHG_IRQ_CHG_I, CHG_INT, 1 << 4), - DECLARE_IRQ(MAX77693_CHG_IRQ_CHGIN_I, CHG_INT, 1 << 6), - - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT1_ADC, MUIC_INT1, 1 << 0), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT1_ADC_LOW, MUIC_INT1, 1 << 1), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT1_ADC_ERR, MUIC_INT1, 1 << 2), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT1_ADC1K, MUIC_INT1, 1 << 3), - - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT2_CHGTYP, MUIC_INT2, 1 << 0), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT2_CHGDETREUN, MUIC_INT2, 1 << 1), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT2_DCDTMR, MUIC_INT2, 1 << 2), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT2_DXOVP, MUIC_INT2, 1 << 3), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT2_VBVOLT, MUIC_INT2, 1 << 4), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT2_VIDRM, MUIC_INT2, 1 << 5), - - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT3_EOC, MUIC_INT3, 1 << 0), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT3_CGMBC, MUIC_INT3, 1 << 1), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT3_OVP, MUIC_INT3, 1 << 2), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, MUIC_INT3, 1 << 3), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, MUIC_INT3, 1 << 4), - DECLARE_IRQ(MAX77693_MUIC_IRQ_INT3_BAT_DET, MUIC_INT3, 1 << 5), -}; - -static void max77693_irq_lock(struct irq_data *data) -{ - struct max77693_dev *max77693 = irq_get_chip_data(data->irq); - - mutex_lock(&max77693->irqlock); -} - -static void max77693_irq_sync_unlock(struct irq_data *data) -{ - struct max77693_dev *max77693 = irq_get_chip_data(data->irq); - int i; - - for (i = 0; i < MAX77693_IRQ_GROUP_NR; i++) { - u8 mask_reg = max77693_mask_reg[i]; - struct regmap *map = max77693_get_regmap(max77693, i); - - if (mask_reg == MAX77693_REG_INVALID || - IS_ERR_OR_NULL(map)) - continue; - max77693->irq_masks_cache[i] = max77693->irq_masks_cur[i]; - - max77693_write_reg(map, max77693_mask_reg[i], - max77693->irq_masks_cur[i]); - } - - mutex_unlock(&max77693->irqlock); -} - -static const inline struct max77693_irq_data * -irq_to_max77693_irq(struct max77693_dev *max77693, int irq) -{ - struct irq_data *data = irq_get_irq_data(irq); - return &max77693_irqs[data->hwirq]; -} - -static void max77693_irq_mask(struct irq_data *data) -{ - struct max77693_dev *max77693 = irq_get_chip_data(data->irq); - const struct max77693_irq_data *irq_data = - irq_to_max77693_irq(max77693, data->irq); - - if (irq_data->group >= MAX77693_IRQ_GROUP_NR) - return; - - if (irq_data->group >= MUIC_INT1 && irq_data->group <= MUIC_INT3) - max77693->irq_masks_cur[irq_data->group] &= ~irq_data->mask; - else - max77693->irq_masks_cur[irq_data->group] |= irq_data->mask; -} - -static void max77693_irq_unmask(struct irq_data *data) -{ - struct max77693_dev *max77693 = irq_get_chip_data(data->irq); - const struct max77693_irq_data *irq_data = - irq_to_max77693_irq(max77693, data->irq); - - if (irq_data->group >= MAX77693_IRQ_GROUP_NR) - return; - - if (irq_data->group >= MUIC_INT1 && irq_data->group <= MUIC_INT3) - max77693->irq_masks_cur[irq_data->group] |= irq_data->mask; - else - max77693->irq_masks_cur[irq_data->group] &= ~irq_data->mask; -} - -static struct irq_chip max77693_irq_chip = { - .name = "max77693", - .irq_bus_lock = max77693_irq_lock, - .irq_bus_sync_unlock = max77693_irq_sync_unlock, - .irq_mask = max77693_irq_mask, - .irq_unmask = max77693_irq_unmask, -}; - -#define MAX77693_IRQSRC_CHG (1 << 0) -#define MAX77693_IRQSRC_TOP (1 << 1) -#define MAX77693_IRQSRC_FLASH (1 << 2) -#define MAX77693_IRQSRC_MUIC (1 << 3) -static irqreturn_t max77693_irq_thread(int irq, void *data) -{ - struct max77693_dev *max77693 = data; - u8 irq_reg[MAX77693_IRQ_GROUP_NR] = {}; - u8 irq_src; - int ret; - int i, cur_irq; - - ret = max77693_read_reg(max77693->regmap, MAX77693_PMIC_REG_INTSRC, - &irq_src); - if (ret < 0) { - dev_err(max77693->dev, "Failed to read interrupt source: %d\n", - ret); - return IRQ_NONE; - } - - if (irq_src & MAX77693_IRQSRC_CHG) - /* CHG_INT */ - ret = max77693_read_reg(max77693->regmap, MAX77693_CHG_REG_CHG_INT, - &irq_reg[CHG_INT]); - - if (irq_src & MAX77693_IRQSRC_TOP) - /* TOPSYS_INT */ - ret = max77693_read_reg(max77693->regmap, - MAX77693_PMIC_REG_TOPSYS_INT, &irq_reg[TOPSYS_INT]); - - if (irq_src & MAX77693_IRQSRC_FLASH) - /* LED_INT */ - ret = max77693_read_reg(max77693->regmap, - MAX77693_LED_REG_FLASH_INT, &irq_reg[LED_INT]); - - if (irq_src & MAX77693_IRQSRC_MUIC) - /* MUIC INT1 ~ INT3 */ - max77693_bulk_read(max77693->regmap_muic, MAX77693_MUIC_REG_INT1, - MAX77693_NUM_IRQ_MUIC_REGS, &irq_reg[MUIC_INT1]); - - /* Apply masking */ - for (i = 0; i < MAX77693_IRQ_GROUP_NR; i++) { - if (i >= MUIC_INT1 && i <= MUIC_INT3) - irq_reg[i] &= max77693->irq_masks_cur[i]; - else - irq_reg[i] &= ~max77693->irq_masks_cur[i]; - } - - /* Report */ - for (i = 0; i < MAX77693_IRQ_NR; i++) { - if (irq_reg[max77693_irqs[i].group] & max77693_irqs[i].mask) { - cur_irq = irq_find_mapping(max77693->irq_domain, i); - if (cur_irq) - handle_nested_irq(cur_irq); - } - } - - return IRQ_HANDLED; -} - -int max77693_irq_resume(struct max77693_dev *max77693) -{ - if (max77693->irq) - max77693_irq_thread(0, max77693); - - return 0; -} - -static int max77693_irq_domain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hw) -{ - struct max77693_dev *max77693 = d->host_data; - - irq_set_chip_data(irq, max77693); - irq_set_chip_and_handler(irq, &max77693_irq_chip, handle_edge_irq); - irq_set_nested_thread(irq, 1); -#ifdef CONFIG_ARM - set_irq_flags(irq, IRQF_VALID); -#else - irq_set_noprobe(irq); -#endif - return 0; -} - -static struct irq_domain_ops max77693_irq_domain_ops = { - .map = max77693_irq_domain_map, -}; - -int max77693_irq_init(struct max77693_dev *max77693) -{ - struct irq_domain *domain; - int i; - int ret = 0; - u8 intsrc_mask; - - mutex_init(&max77693->irqlock); - - /* Mask individual interrupt sources */ - for (i = 0; i < MAX77693_IRQ_GROUP_NR; i++) { - struct regmap *map; - /* MUIC IRQ 0:MASK 1:NOT MASK */ - /* Other IRQ 1:MASK 0:NOT MASK */ - if (i >= MUIC_INT1 && i <= MUIC_INT3) { - max77693->irq_masks_cur[i] = 0x00; - max77693->irq_masks_cache[i] = 0x00; - } else { - max77693->irq_masks_cur[i] = 0xff; - max77693->irq_masks_cache[i] = 0xff; - } - map = max77693_get_regmap(max77693, i); - - if (IS_ERR_OR_NULL(map)) - continue; - if (max77693_mask_reg[i] == MAX77693_REG_INVALID) - continue; - if (i >= MUIC_INT1 && i <= MUIC_INT3) - max77693_write_reg(map, max77693_mask_reg[i], 0x00); - else - max77693_write_reg(map, max77693_mask_reg[i], 0xff); - } - - domain = irq_domain_add_linear(NULL, MAX77693_IRQ_NR, - &max77693_irq_domain_ops, max77693); - if (!domain) { - dev_err(max77693->dev, "could not create irq domain\n"); - ret = -ENODEV; - goto err_irq; - } - max77693->irq_domain = domain; - - /* Unmask max77693 interrupt */ - ret = max77693_read_reg(max77693->regmap, - MAX77693_PMIC_REG_INTSRC_MASK, &intsrc_mask); - if (ret < 0) { - dev_err(max77693->dev, "fail to read PMIC register\n"); - goto err_irq; - } - - intsrc_mask &= ~(MAX77693_IRQSRC_CHG); - intsrc_mask &= ~(MAX77693_IRQSRC_FLASH); - intsrc_mask &= ~(MAX77693_IRQSRC_MUIC); - ret = max77693_write_reg(max77693->regmap, - MAX77693_PMIC_REG_INTSRC_MASK, intsrc_mask); - if (ret < 0) { - dev_err(max77693->dev, "fail to write PMIC register\n"); - goto err_irq; - } - - ret = request_threaded_irq(max77693->irq, NULL, max77693_irq_thread, - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - "max77693-irq", max77693); - if (ret) - dev_err(max77693->dev, "Failed to request IRQ %d: %d\n", - max77693->irq, ret); - -err_irq: - return ret; -} - -void max77693_irq_exit(struct max77693_dev *max77693) -{ - if (max77693->irq) - free_irq(max77693->irq, max77693); -} |