| /* |
| * s5m-irq.c |
| * |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd |
| * http://www.samsung.com |
| * |
| * 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. |
| * |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/interrupt.h> |
| #include <linux/irq.h> |
| #include <linux/mfd/s5m87xx/s5m-core.h> |
| |
| struct s5m_irq_data { |
| int reg; |
| int mask; |
| }; |
| |
| static struct s5m_irq_data s5m8767_irqs[] = { |
| [S5M8767_IRQ_PWRR] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_PWRR_MASK, |
| }, |
| [S5M8767_IRQ_PWRF] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_PWRF_MASK, |
| }, |
| [S5M8767_IRQ_PWR1S] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_PWR1S_MASK, |
| }, |
| [S5M8767_IRQ_JIGR] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_JIGR_MASK, |
| }, |
| [S5M8767_IRQ_JIGF] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_JIGF_MASK, |
| }, |
| [S5M8767_IRQ_LOWBAT2] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_LOWBAT2_MASK, |
| }, |
| [S5M8767_IRQ_LOWBAT1] = { |
| .reg = 1, |
| .mask = S5M8767_IRQ_LOWBAT1_MASK, |
| }, |
| [S5M8767_IRQ_MRB] = { |
| .reg = 2, |
| .mask = S5M8767_IRQ_MRB_MASK, |
| }, |
| [S5M8767_IRQ_DVSOK2] = { |
| .reg = 2, |
| .mask = S5M8767_IRQ_DVSOK2_MASK, |
| }, |
| [S5M8767_IRQ_DVSOK3] = { |
| .reg = 2, |
| .mask = S5M8767_IRQ_DVSOK3_MASK, |
| }, |
| [S5M8767_IRQ_DVSOK4] = { |
| .reg = 2, |
| .mask = S5M8767_IRQ_DVSOK4_MASK, |
| }, |
| [S5M8767_IRQ_RTC60S] = { |
| .reg = 3, |
| .mask = S5M8767_IRQ_RTC60S_MASK, |
| }, |
| [S5M8767_IRQ_RTCA1] = { |
| .reg = 3, |
| .mask = S5M8767_IRQ_RTCA1_MASK, |
| }, |
| [S5M8767_IRQ_RTCA2] = { |
| .reg = 3, |
| .mask = S5M8767_IRQ_RTCA2_MASK, |
| }, |
| [S5M8767_IRQ_SMPL] = { |
| .reg = 3, |
| .mask = S5M8767_IRQ_SMPL_MASK, |
| }, |
| [S5M8767_IRQ_RTC1S] = { |
| .reg = 3, |
| .mask = S5M8767_IRQ_RTC1S_MASK, |
| }, |
| [S5M8767_IRQ_WTSR] = { |
| .reg = 3, |
| .mask = S5M8767_IRQ_WTSR_MASK, |
| }, |
| }; |
| |
| static struct s5m_irq_data s5m8763_irqs[] = { |
| [S5M8763_IRQ_DCINF] = { |
| .reg = 1, |
| .mask = S5M8763_IRQ_DCINF_MASK, |
| }, |
| [S5M8763_IRQ_DCINR] = { |
| .reg = 1, |
| .mask = S5M8763_IRQ_DCINR_MASK, |
| }, |
| [S5M8763_IRQ_JIGF] = { |
| .reg = 1, |
| .mask = S5M8763_IRQ_JIGF_MASK, |
| }, |
| [S5M8763_IRQ_JIGR] = { |
| .reg = 1, |
| .mask = S5M8763_IRQ_JIGR_MASK, |
| }, |
| [S5M8763_IRQ_PWRONF] = { |
| .reg = 1, |
| .mask = S5M8763_IRQ_PWRONF_MASK, |
| }, |
| [S5M8763_IRQ_PWRONR] = { |
| .reg = 1, |
| .mask = S5M8763_IRQ_PWRONR_MASK, |
| }, |
| [S5M8763_IRQ_WTSREVNT] = { |
| .reg = 2, |
| .mask = S5M8763_IRQ_WTSREVNT_MASK, |
| }, |
| [S5M8763_IRQ_SMPLEVNT] = { |
| .reg = 2, |
| .mask = S5M8763_IRQ_SMPLEVNT_MASK, |
| }, |
| [S5M8763_IRQ_ALARM1] = { |
| .reg = 2, |
| .mask = S5M8763_IRQ_ALARM1_MASK, |
| }, |
| [S5M8763_IRQ_ALARM0] = { |
| .reg = 2, |
| .mask = S5M8763_IRQ_ALARM0_MASK, |
| }, |
| [S5M8763_IRQ_ONKEY1S] = { |
| .reg = 3, |
| .mask = S5M8763_IRQ_ONKEY1S_MASK, |
| }, |
| [S5M8763_IRQ_TOPOFFR] = { |
| .reg = 3, |
| .mask = S5M8763_IRQ_TOPOFFR_MASK, |
| }, |
| [S5M8763_IRQ_DCINOVPR] = { |
| .reg = 3, |
| .mask = S5M8763_IRQ_DCINOVPR_MASK, |
| }, |
| [S5M8763_IRQ_CHGRSTF] = { |
| .reg = 3, |
| .mask = S5M8763_IRQ_CHGRSTF_MASK, |
| }, |
| [S5M8763_IRQ_DONER] = { |
| .reg = 3, |
| .mask = S5M8763_IRQ_DONER_MASK, |
| }, |
| [S5M8763_IRQ_CHGFAULT] = { |
| .reg = 3, |
| .mask = S5M8763_IRQ_CHGFAULT_MASK, |
| }, |
| [S5M8763_IRQ_LOBAT1] = { |
| .reg = 4, |
| .mask = S5M8763_IRQ_LOBAT1_MASK, |
| }, |
| [S5M8763_IRQ_LOBAT2] = { |
| .reg = 4, |
| .mask = S5M8763_IRQ_LOBAT2_MASK, |
| }, |
| }; |
| |
| static inline struct s5m_irq_data * |
| irq_to_s5m8767_irq(struct s5m87xx_dev *s5m87xx, int irq) |
| { |
| return &s5m8767_irqs[irq - s5m87xx->irq_base]; |
| } |
| |
| static void s5m8767_irq_lock(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| |
| mutex_lock(&s5m87xx->irqlock); |
| } |
| |
| static void s5m8767_irq_sync_unlock(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(s5m87xx->irq_masks_cur); i++) { |
| if (s5m87xx->irq_masks_cur[i] != s5m87xx->irq_masks_cache[i]) { |
| s5m87xx->irq_masks_cache[i] = s5m87xx->irq_masks_cur[i]; |
| s5m_reg_write(s5m87xx, S5M8767_REG_INT1M + i, |
| s5m87xx->irq_masks_cur[i]); |
| } |
| } |
| |
| mutex_unlock(&s5m87xx->irqlock); |
| } |
| |
| static void s5m8767_irq_unmask(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| struct s5m_irq_data *irq_data = irq_to_s5m8767_irq(s5m87xx, |
| data->irq); |
| |
| s5m87xx->irq_masks_cur[irq_data->reg - 1] &= ~irq_data->mask; |
| } |
| |
| static void s5m8767_irq_mask(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| struct s5m_irq_data *irq_data = irq_to_s5m8767_irq(s5m87xx, |
| data->irq); |
| |
| s5m87xx->irq_masks_cur[irq_data->reg - 1] |= irq_data->mask; |
| } |
| |
| static struct irq_chip s5m8767_irq_chip = { |
| .name = "s5m8767", |
| .irq_bus_lock = s5m8767_irq_lock, |
| .irq_bus_sync_unlock = s5m8767_irq_sync_unlock, |
| .irq_mask = s5m8767_irq_mask, |
| .irq_unmask = s5m8767_irq_unmask, |
| }; |
| |
| static inline struct s5m_irq_data * |
| irq_to_s5m8763_irq(struct s5m87xx_dev *s5m87xx, int irq) |
| { |
| return &s5m8763_irqs[irq - s5m87xx->irq_base]; |
| } |
| |
| static void s5m8763_irq_lock(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| |
| mutex_lock(&s5m87xx->irqlock); |
| } |
| |
| static void s5m8763_irq_sync_unlock(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(s5m87xx->irq_masks_cur); i++) { |
| if (s5m87xx->irq_masks_cur[i] != s5m87xx->irq_masks_cache[i]) { |
| s5m87xx->irq_masks_cache[i] = s5m87xx->irq_masks_cur[i]; |
| s5m_reg_write(s5m87xx, S5M8763_REG_IRQM1 + i, |
| s5m87xx->irq_masks_cur[i]); |
| } |
| } |
| |
| mutex_unlock(&s5m87xx->irqlock); |
| } |
| |
| static void s5m8763_irq_unmask(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| struct s5m_irq_data *irq_data = irq_to_s5m8763_irq(s5m87xx, |
| data->irq); |
| |
| s5m87xx->irq_masks_cur[irq_data->reg - 1] &= ~irq_data->mask; |
| } |
| |
| static void s5m8763_irq_mask(struct irq_data *data) |
| { |
| struct s5m87xx_dev *s5m87xx = irq_data_get_irq_chip_data(data); |
| struct s5m_irq_data *irq_data = irq_to_s5m8763_irq(s5m87xx, |
| data->irq); |
| |
| s5m87xx->irq_masks_cur[irq_data->reg - 1] |= irq_data->mask; |
| } |
| |
| static struct irq_chip s5m8763_irq_chip = { |
| .name = "s5m8763", |
| .irq_bus_lock = s5m8763_irq_lock, |
| .irq_bus_sync_unlock = s5m8763_irq_sync_unlock, |
| .irq_mask = s5m8763_irq_mask, |
| .irq_unmask = s5m8763_irq_unmask, |
| }; |
| |
| |
| static irqreturn_t s5m8767_irq_thread(int irq, void *data) |
| { |
| struct s5m87xx_dev *s5m87xx = data; |
| u8 irq_reg[NUM_IRQ_REGS-1]; |
| int ret; |
| int i; |
| |
| |
| ret = s5m_bulk_read(s5m87xx, S5M8767_REG_INT1, |
| NUM_IRQ_REGS - 1, irq_reg); |
| if (ret < 0) { |
| dev_err(s5m87xx->dev, "Failed to read interrupt register: %d\n", |
| ret); |
| return IRQ_NONE; |
| } |
| |
| for (i = 0; i < NUM_IRQ_REGS - 1; i++) |
| irq_reg[i] &= ~s5m87xx->irq_masks_cur[i]; |
| |
| for (i = 0; i < S5M8767_IRQ_NR; i++) { |
| if (irq_reg[s5m8767_irqs[i].reg - 1] & s5m8767_irqs[i].mask) |
| handle_nested_irq(s5m87xx->irq_base + i); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t s5m8763_irq_thread(int irq, void *data) |
| { |
| struct s5m87xx_dev *s5m87xx = data; |
| u8 irq_reg[NUM_IRQ_REGS]; |
| int ret; |
| int i; |
| |
| ret = s5m_bulk_read(s5m87xx, S5M8763_REG_IRQ1, |
| NUM_IRQ_REGS, irq_reg); |
| if (ret < 0) { |
| dev_err(s5m87xx->dev, "Failed to read interrupt register: %d\n", |
| ret); |
| return IRQ_NONE; |
| } |
| |
| for (i = 0; i < NUM_IRQ_REGS; i++) |
| irq_reg[i] &= ~s5m87xx->irq_masks_cur[i]; |
| |
| for (i = 0; i < S5M8763_IRQ_NR; i++) { |
| if (irq_reg[s5m8763_irqs[i].reg - 1] & s5m8763_irqs[i].mask) |
| handle_nested_irq(s5m87xx->irq_base + i); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| int s5m_irq_resume(struct s5m87xx_dev *s5m87xx) |
| { |
| if (s5m87xx->irq && s5m87xx->irq_base){ |
| switch (s5m87xx->device_type) { |
| case S5M8763X: |
| s5m8763_irq_thread(s5m87xx->irq_base, s5m87xx); |
| break; |
| case S5M8767X: |
| s5m8767_irq_thread(s5m87xx->irq_base, s5m87xx); |
| break; |
| default: |
| dev_err(s5m87xx->dev, |
| "Unknown device type %d\n", |
| s5m87xx->device_type); |
| return -EINVAL; |
| |
| } |
| } |
| return 0; |
| } |
| |
| int s5m_irq_init(struct s5m87xx_dev *s5m87xx) |
| { |
| int i; |
| int cur_irq; |
| int ret = 0; |
| int type = s5m87xx->device_type; |
| |
| if (!s5m87xx->irq) { |
| dev_warn(s5m87xx->dev, |
| "No interrupt specified, no interrupts\n"); |
| s5m87xx->irq_base = 0; |
| return 0; |
| } |
| |
| if (!s5m87xx->irq_base) { |
| dev_err(s5m87xx->dev, |
| "No interrupt base specified, no interrupts\n"); |
| return 0; |
| } |
| |
| mutex_init(&s5m87xx->irqlock); |
| |
| switch (type) { |
| case S5M8763X: |
| for (i = 0; i < NUM_IRQ_REGS; i++) { |
| s5m87xx->irq_masks_cur[i] = 0xff; |
| s5m87xx->irq_masks_cache[i] = 0xff; |
| s5m_reg_write(s5m87xx, S5M8763_REG_IRQM1 + i, |
| 0xff); |
| } |
| |
| s5m_reg_write(s5m87xx, S5M8763_REG_STATUSM1, 0xff); |
| s5m_reg_write(s5m87xx, S5M8763_REG_STATUSM2, 0xff); |
| |
| for (i = 0; i < S5M8763_IRQ_NR; i++) { |
| cur_irq = i + s5m87xx->irq_base; |
| irq_set_chip_data(cur_irq, s5m87xx); |
| irq_set_chip_and_handler(cur_irq, &s5m8763_irq_chip, |
| handle_edge_irq); |
| irq_set_nested_thread(cur_irq, 1); |
| #ifdef CONFIG_ARM |
| set_irq_flags(cur_irq, IRQF_VALID); |
| #else |
| irq_set_noprobe(cur_irq); |
| #endif |
| } |
| |
| ret = request_threaded_irq(s5m87xx->irq, NULL, |
| s5m8763_irq_thread, |
| IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
| "s5m87xx-irq", s5m87xx); |
| if (ret) { |
| dev_err(s5m87xx->dev, "Failed to request IRQ %d: %d\n", |
| s5m87xx->irq, ret); |
| return ret; |
| } |
| break; |
| case S5M8767X: |
| for (i = 0; i < NUM_IRQ_REGS - 1; i++) { |
| s5m87xx->irq_masks_cur[i] = 0xff; |
| s5m87xx->irq_masks_cache[i] = 0xff; |
| s5m_reg_write(s5m87xx, S5M8767_REG_INT1M + i, |
| 0xff); |
| } |
| for (i = 0; i < S5M8767_IRQ_NR; i++) { |
| cur_irq = i + s5m87xx->irq_base; |
| irq_set_chip_data(cur_irq, s5m87xx); |
| if (ret) { |
| dev_err(s5m87xx->dev, |
| "Failed to irq_set_chip_data %d: %d\n", |
| s5m87xx->irq, ret); |
| return ret; |
| } |
| |
| irq_set_chip_and_handler(cur_irq, &s5m8767_irq_chip, |
| handle_edge_irq); |
| irq_set_nested_thread(cur_irq, 1); |
| #ifdef CONFIG_ARM |
| set_irq_flags(cur_irq, IRQF_VALID); |
| #else |
| irq_set_noprobe(cur_irq); |
| #endif |
| } |
| |
| ret = request_threaded_irq(s5m87xx->irq, NULL, |
| s5m8767_irq_thread, |
| IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
| "s5m87xx-irq", s5m87xx); |
| if (ret) { |
| dev_err(s5m87xx->dev, "Failed to request IRQ %d: %d\n", |
| s5m87xx->irq, ret); |
| return ret; |
| } |
| break; |
| default: |
| dev_err(s5m87xx->dev, |
| "Unknown device type %d\n", s5m87xx->device_type); |
| return -EINVAL; |
| } |
| |
| if (!s5m87xx->ono) |
| return 0; |
| |
| switch (type) { |
| case S5M8763X: |
| ret = request_threaded_irq(s5m87xx->ono, NULL, |
| s5m8763_irq_thread, |
| IRQF_TRIGGER_FALLING | |
| IRQF_TRIGGER_RISING | |
| IRQF_ONESHOT, "s5m87xx-ono", |
| s5m87xx); |
| break; |
| case S5M8767X: |
| ret = request_threaded_irq(s5m87xx->ono, NULL, |
| s5m8767_irq_thread, |
| IRQF_TRIGGER_FALLING | |
| IRQF_TRIGGER_RISING | |
| IRQF_ONESHOT, "s5m87xx-ono", s5m87xx); |
| break; |
| default: |
| ret = -EINVAL; |
| break; |
| } |
| |
| if (ret) { |
| dev_err(s5m87xx->dev, "Failed to request IRQ %d: %d\n", |
| s5m87xx->ono, ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| void s5m_irq_exit(struct s5m87xx_dev *s5m87xx) |
| { |
| if (s5m87xx->ono) |
| free_irq(s5m87xx->ono, s5m87xx); |
| |
| if (s5m87xx->irq) |
| free_irq(s5m87xx->irq, s5m87xx); |
| } |