/* * Copyright (C) ST-Ericsson SA 2010 * * License Terms: GNU General Public License v2 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> * Author: Rabin Vincent <rabin.vincent@stericsson.com> * Author: Mattias Wallin <mattias.wallin@stericsson.com> */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/irq.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/mfd/core.h> #include <linux/mfd/abx500.h> #include <linux/mfd/ab8500.h> #include <linux/regulator/ab8500.h> /* * Interrupt register offsets * Bank : 0x0E */ #define AB8500_IT_SOURCE1_REG 0x00 #define AB8500_IT_SOURCE2_REG 0x01 #define AB8500_IT_SOURCE3_REG 0x02 #define AB8500_IT_SOURCE4_REG 0x03 #define AB8500_IT_SOURCE5_REG 0x04 #define AB8500_IT_SOURCE6_REG 0x05 #define AB8500_IT_SOURCE7_REG 0x06 #define AB8500_IT_SOURCE8_REG 0x07 #define AB8500_IT_SOURCE19_REG 0x12 #define AB8500_IT_SOURCE20_REG 0x13 #define AB8500_IT_SOURCE21_REG 0x14 #define AB8500_IT_SOURCE22_REG 0x15 #define AB8500_IT_SOURCE23_REG 0x16 #define AB8500_IT_SOURCE24_REG 0x17 /* * latch registers */ #define AB8500_IT_LATCH1_REG 0x20 #define AB8500_IT_LATCH2_REG 0x21 #define AB8500_IT_LATCH3_REG 0x22 #define AB8500_IT_LATCH4_REG 0x23 #define AB8500_IT_LATCH5_REG 0x24 #define AB8500_IT_LATCH6_REG 0x25 #define AB8500_IT_LATCH7_REG 0x26 #define AB8500_IT_LATCH8_REG 0x27 #define AB8500_IT_LATCH9_REG 0x28 #define AB8500_IT_LATCH10_REG 0x29 #define AB8500_IT_LATCH12_REG 0x2B #define AB8500_IT_LATCH19_REG 0x32 #define AB8500_IT_LATCH20_REG 0x33 #define AB8500_IT_LATCH21_REG 0x34 #define AB8500_IT_LATCH22_REG 0x35 #define AB8500_IT_LATCH23_REG 0x36 #define AB8500_IT_LATCH24_REG 0x37 /* * mask registers */ #define AB8500_IT_MASK1_REG 0x40 #define AB8500_IT_MASK2_REG 0x41 #define AB8500_IT_MASK3_REG 0x42 #define AB8500_IT_MASK4_REG 0x43 #define AB8500_IT_MASK5_REG 0x44 #define AB8500_IT_MASK6_REG 0x45 #define AB8500_IT_MASK7_REG 0x46 #define AB8500_IT_MASK8_REG 0x47 #define AB8500_IT_MASK9_REG 0x48 #define AB8500_IT_MASK10_REG 0x49 #define AB8500_IT_MASK11_REG 0x4A #define AB8500_IT_MASK12_REG 0x4B #define AB8500_IT_MASK13_REG 0x4C #define AB8500_IT_MASK14_REG 0x4D #define AB8500_IT_MASK15_REG 0x4E #define AB8500_IT_MASK16_REG 0x4F #define AB8500_IT_MASK17_REG 0x50 #define AB8500_IT_MASK18_REG 0x51 #define AB8500_IT_MASK19_REG 0x52 #define AB8500_IT_MASK20_REG 0x53 #define AB8500_IT_MASK21_REG 0x54 #define AB8500_IT_MASK22_REG 0x55 #define AB8500_IT_MASK23_REG 0x56 #define AB8500_IT_MASK24_REG 0x57 #define AB8500_REV_REG 0x80 #define AB8500_SWITCH_OFF_STATUS 0x00 #define AB8500_TURN_ON_STATUS 0x00 /* * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt * numbers are indexed into this array with (num / 8). * * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at * offset 0. */ static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, }; static int ab8500_get_chip_id(struct device *dev) { struct ab8500 *ab8500; if (!dev) return -EINVAL; ab8500 = dev_get_drvdata(dev->parent); return ab8500 ? (int)ab8500->chip_id : -EINVAL; } static int set_register_interruptible(struct ab8500 *ab8500, u8 bank, u8 reg, u8 data) { int ret; /* * Put the u8 bank and u8 register together into a an u16. * The bank on higher 8 bits and register in lower 8 bits. * */ u16 addr = ((u16)bank) << 8 | reg; dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data); ret = mutex_lock_interruptible(&ab8500->lock); if (ret) return ret; ret = ab8500->write(ab8500, addr, data); if (ret < 0) dev_err(ab8500->dev, "failed to write reg %#x: %d\n", addr, ret); mutex_unlock(&ab8500->lock); return ret; } static int ab8500_set_register(struct device *dev, u8 bank, u8 reg, u8 value) { struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); return set_register_interruptible(ab8500, bank, reg, value); } static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, u8 reg, u8 *value) { int ret; /* put the u8 bank and u8 reg together into a an u16. * bank on higher 8 bits and reg in lower */ u16 addr = ((u16)bank) << 8 | reg; ret = mutex_lock_interruptible(&ab8500->lock); if (ret) return ret; ret = ab8500->read(ab8500, addr); if (ret < 0) dev_err(ab8500->dev, "failed to read reg %#x: %d\n", addr, ret); else *value = ret; mutex_unlock(&ab8500->lock); dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); return ret; } static int ab8500_get_register(struct device *dev, u8 bank, u8 reg, u8 *value) { struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); return get_register_interruptible(ab8500, bank, reg, value); } static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank, u8 reg, u8 bitmask, u8 bitvalues) { int ret; u8 data; /* put the u8 bank and u8 reg together into a an u16. * bank on higher 8 bits and reg in lower */ u16 addr = ((u16)bank) << 8 | reg; ret = mutex_lock_interruptible(&ab8500->lock); if (ret) return ret; ret = ab8500->read(ab8500, addr); if (ret < 0) { dev_err(ab8500->dev, "failed to read reg %#x: %d\n", addr, ret); goto out; } data = (u8)ret; data = (~bitmask & data) | (bitmask & bitvalues); ret = ab8500->write(ab8500, addr, data); if (ret < 0) dev_err(ab8500->dev, "failed to write reg %#x: %d\n", addr, ret); dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data); out: mutex_unlock(&ab8500->lock); return ret; } static int ab8500_mask_and_set_register(struct device *dev, u8 bank, u8 reg, u8 bitmask, u8 bitvalues) { struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); return mask_and_set_register_interruptible(ab8500, bank, reg, bitmask, bitvalues); } static struct abx500_ops ab8500_ops = { .get_chip_id = ab8500_get_chip_id, .get_register = ab8500_get_register, .set_register = ab8500_set_register, .get_register_page = NULL, .set_register_page = NULL, .mask_and_set_register = ab8500_mask_and_set_register, .event_registers_startup_state_get = NULL, .startup_irq_enabled = NULL, }; static void ab8500_irq_lock(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); mutex_lock(&ab8500->irq_lock); } static void ab8500_irq_sync_unlock(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); int i; for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { u8 old = ab8500->oldmask[i]; u8 new = ab8500->mask[i]; int reg; if (new == old) continue; /* Interrupt register 12 doesn't exist prior to version 2.0 */ if (ab8500_irq_regoffset[i] == 11 && ab8500->chip_id < AB8500_CUT2P0) continue; ab8500->oldmask[i] = new; reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i]; set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new); } mutex_unlock(&ab8500->irq_lock); } static void ab8500_irq_mask(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); int offset = data->irq - ab8500->irq_base; int index = offset / 8; int mask = 1 << (offset % 8); ab8500->mask[index] |= mask; } static void ab8500_irq_unmask(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); int offset = data->irq - ab8500->irq_base; int index = offset / 8; int mask = 1 << (offset % 8); ab8500->mask[index] &= ~mask; } static struct irq_chip ab8500_irq_chip = { .name = "ab8500", .irq_bus_lock = ab8500_irq_lock, .irq_bus_sync_unlock = ab8500_irq_sync_unlock, .irq_mask = ab8500_irq_mask, .irq_disable = ab8500_irq_mask, .irq_unmask = ab8500_irq_unmask, }; static irqreturn_t ab8500_irq(int irq, void *dev) { struct ab8500 *ab8500 = dev; int i; dev_vdbg(ab8500->dev, "interrupt\n"); for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { int regoffset = ab8500_irq_regoffset[i]; int status; u8 value; /* Interrupt register 12 doesn't exist prior to version 2.0 */ if (regoffset == 11 && ab8500->chip_id < AB8500_CUT2P0) continue; status = get_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_LATCH1_REG + regoffset, &value); if (status < 0 || value == 0) continue; do { int bit = __ffs(value); int line = i * 8 + bit; handle_nested_irq(ab8500->irq_base + line); value &= ~(1 << bit); } while (value); } return IRQ_HANDLED; } static int ab8500_irq_init(struct ab8500 *ab8500) { int base = ab8500->irq_base; int irq; for (irq = base; irq < base + AB8500_NR_IRQS; irq++) { irq_set_chip_data(irq, ab8500); irq_set_chip_and_handler(irq, &ab8500_irq_chip, handle_simple_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 void ab8500_irq_remove(struct ab8500 *ab8500) { int base = ab8500->irq_base; int irq; for (irq = base; irq < base + AB8500_NR_IRQS; irq++) { #ifdef CONFIG_ARM set_irq_flags(irq, 0); #endif irq_set_chip_and_handler(irq, NULL, NULL); irq_set_chip_data(irq, NULL); } } static struct resource __devinitdata ab8500_gpio_resources[] = { { .name = "GPIO_INT6", .start = AB8500_INT_GPIO6R, .end = AB8500_INT_GPIO41F, .flags = IORESOURCE_IRQ, } }; static struct resource __devinitdata ab8500_gpadc_resources[] = { { .name = "HW_CONV_END", .start = AB8500_INT_GP_HW_ADC_CONV_END, .end = AB8500_INT_GP_HW_ADC_CONV_END, .flags = IORESOURCE_IRQ, }, { .name = "SW_CONV_END", .start = AB8500_INT_GP_SW_ADC_CONV_END, .end = AB8500_INT_GP_SW_ADC_CONV_END, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_rtc_resources[] = { { .name = "60S", .start = AB8500_INT_RTC_60S, .end = AB8500_INT_RTC_60S, .flags = IORESOURCE_IRQ, }, { .name = "ALARM", .start = AB8500_INT_RTC_ALARM, .end = AB8500_INT_RTC_ALARM, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_poweronkey_db_resources[] = { { .name = "ONKEY_DBF", .start = AB8500_INT_PON_KEY1DB_F, .end = AB8500_INT_PON_KEY1DB_F, .flags = IORESOURCE_IRQ, }, { .name = "ONKEY_DBR", .start = AB8500_INT_PON_KEY1DB_R, .end = AB8500_INT_PON_KEY1DB_R, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_av_acc_detect_resources[] = { { .name = "ACC_DETECT_1DB_F", .start = AB8500_INT_ACC_DETECT_1DB_F, .end = AB8500_INT_ACC_DETECT_1DB_F, .flags = IORESOURCE_IRQ, }, { .name = "ACC_DETECT_1DB_R", .start = AB8500_INT_ACC_DETECT_1DB_R, .end = AB8500_INT_ACC_DETECT_1DB_R, .flags = IORESOURCE_IRQ, }, { .name = "ACC_DETECT_21DB_F", .start = AB8500_INT_ACC_DETECT_21DB_F, .end = AB8500_INT_ACC_DETECT_21DB_F, .flags = IORESOURCE_IRQ, }, { .name = "ACC_DETECT_21DB_R", .start = AB8500_INT_ACC_DETECT_21DB_R, .end = AB8500_INT_ACC_DETECT_21DB_R, .flags = IORESOURCE_IRQ, }, { .name = "ACC_DETECT_22DB_F", .start = AB8500_INT_ACC_DETECT_22DB_F, .end = AB8500_INT_ACC_DETECT_22DB_F, .flags = IORESOURCE_IRQ, }, { .name = "ACC_DETECT_22DB_R", .start = AB8500_INT_ACC_DETECT_22DB_R, .end = AB8500_INT_ACC_DETECT_22DB_R, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_charger_resources[] = { { .name = "MAIN_CH_UNPLUG_DET", .start = AB8500_INT_MAIN_CH_UNPLUG_DET, .end = AB8500_INT_MAIN_CH_UNPLUG_DET, .flags = IORESOURCE_IRQ, }, { .name = "MAIN_CHARGE_PLUG_DET", .start = AB8500_INT_MAIN_CH_PLUG_DET, .end = AB8500_INT_MAIN_CH_PLUG_DET, .flags = IORESOURCE_IRQ, }, { .name = "VBUS_DET_R", .start = AB8500_INT_VBUS_DET_R, .end = AB8500_INT_VBUS_DET_R, .flags = IORESOURCE_IRQ, }, { .name = "VBUS_DET_F", .start = AB8500_INT_VBUS_DET_F, .end = AB8500_INT_VBUS_DET_F, .flags = IORESOURCE_IRQ, }, { .name = "USB_LINK_STATUS", .start = AB8500_INT_USB_LINK_STATUS, .end = AB8500_INT_USB_LINK_STATUS, .flags = IORESOURCE_IRQ, }, { .name = "USB_CHARGE_DET_DONE", .start = AB8500_INT_USB_CHG_DET_DONE, .end = AB8500_INT_USB_CHG_DET_DONE, .flags = IORESOURCE_IRQ, }, { .name = "VBUS_OVV", .start = AB8500_INT_VBUS_OVV, .end = AB8500_INT_VBUS_OVV, .flags = IORESOURCE_IRQ, }, { .name = "USB_CH_TH_PROT_R", .start = AB8500_INT_USB_CH_TH_PROT_R, .end = AB8500_INT_USB_CH_TH_PROT_R, .flags = IORESOURCE_IRQ, }, { .name = "USB_CH_TH_PROT_F", .start = AB8500_INT_USB_CH_TH_PROT_F, .end = AB8500_INT_USB_CH_TH_PROT_F, .flags = IORESOURCE_IRQ, }, { .name = "MAIN_EXT_CH_NOT_OK", .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, .flags = IORESOURCE_IRQ, }, { .name = "MAIN_CH_TH_PROT_R", .start = AB8500_INT_MAIN_CH_TH_PROT_R, .end = AB8500_INT_MAIN_CH_TH_PROT_R, .flags = IORESOURCE_IRQ, }, { .name = "MAIN_CH_TH_PROT_F", .start = AB8500_INT_MAIN_CH_TH_PROT_F, .end = AB8500_INT_MAIN_CH_TH_PROT_F, .flags = IORESOURCE_IRQ, }, { .name = "USB_CHARGER_NOT_OKR", .start = AB8500_INT_USB_CHARGER_NOT_OK, .end = AB8500_INT_USB_CHARGER_NOT_OK, .flags = IORESOURCE_IRQ, }, { .name = "USB_CHARGER_NOT_OKF", .start = AB8500_INT_USB_CHARGER_NOT_OKF, .end = AB8500_INT_USB_CHARGER_NOT_OKF, .flags = IORESOURCE_IRQ, }, { .name = "CH_WD_EXP", .start = AB8500_INT_CH_WD_EXP, .end = AB8500_INT_CH_WD_EXP, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_btemp_resources[] = { { .name = "BAT_CTRL_INDB", .start = AB8500_INT_BAT_CTRL_INDB, .end = AB8500_INT_BAT_CTRL_INDB, .flags = IORESOURCE_IRQ, }, { .name = "BTEMP_LOW", .start = AB8500_INT_BTEMP_LOW, .end = AB8500_INT_BTEMP_LOW, .flags = IORESOURCE_IRQ, }, { .name = "BTEMP_HIGH", .start = AB8500_INT_BTEMP_HIGH, .end = AB8500_INT_BTEMP_HIGH, .flags = IORESOURCE_IRQ, }, { .name = "BTEMP_LOW_MEDIUM", .start = AB8500_INT_BTEMP_LOW_MEDIUM, .end = AB8500_INT_BTEMP_LOW_MEDIUM, .flags = IORESOURCE_IRQ, }, { .name = "BTEMP_MEDIUM_HIGH", .start = AB8500_INT_BTEMP_MEDIUM_HIGH, .end = AB8500_INT_BTEMP_MEDIUM_HIGH, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_fg_resources[] = { { .name = "NCONV_ACCU", .start = AB8500_INT_CCN_CONV_ACC, .end = AB8500_INT_CCN_CONV_ACC, .flags = IORESOURCE_IRQ, }, { .name = "BATT_OVV", .start = AB8500_INT_BATT_OVV, .end = AB8500_INT_BATT_OVV, .flags = IORESOURCE_IRQ, }, { .name = "LOW_BAT_F", .start = AB8500_INT_LOW_BAT_F, .end = AB8500_INT_LOW_BAT_F, .flags = IORESOURCE_IRQ, }, { .name = "LOW_BAT_R", .start = AB8500_INT_LOW_BAT_R, .end = AB8500_INT_LOW_BAT_R, .flags = IORESOURCE_IRQ, }, { .name = "CC_INT_CALIB", .start = AB8500_INT_CC_INT_CALIB, .end = AB8500_INT_CC_INT_CALIB, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_chargalg_resources[] = {}; static struct resource __devinitdata ab8500_debug_resources[] = { { .name = "IRQ_FIRST", .start = AB8500_INT_MAIN_EXT_CH_NOT_OK, .end = AB8500_INT_MAIN_EXT_CH_NOT_OK, .flags = IORESOURCE_IRQ, }, { .name = "IRQ_LAST", .start = AB8500_INT_USB_CHARGER_NOT_OKF, .end = AB8500_INT_USB_CHARGER_NOT_OKF, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_usb_resources[] = { { .name = "ID_WAKEUP_R", .start = AB8500_INT_ID_WAKEUP_R, .end = AB8500_INT_ID_WAKEUP_R, .flags = IORESOURCE_IRQ, }, { .name = "ID_WAKEUP_F", .start = AB8500_INT_ID_WAKEUP_F, .end = AB8500_INT_ID_WAKEUP_F, .flags = IORESOURCE_IRQ, }, { .name = "VBUS_DET_F", .start = AB8500_INT_VBUS_DET_F, .end = AB8500_INT_VBUS_DET_F, .flags = IORESOURCE_IRQ, }, { .name = "VBUS_DET_R", .start = AB8500_INT_VBUS_DET_R, .end = AB8500_INT_VBUS_DET_R, .flags = IORESOURCE_IRQ, }, { .name = "USB_LINK_STATUS", .start = AB8500_INT_USB_LINK_STATUS, .end = AB8500_INT_USB_LINK_STATUS, .flags = IORESOURCE_IRQ, }, { .name = "USB_ADP_PROBE_PLUG", .start = AB8500_INT_ADP_PROBE_PLUG, .end = AB8500_INT_ADP_PROBE_PLUG, .flags = IORESOURCE_IRQ, }, { .name = "USB_ADP_PROBE_UNPLUG", .start = AB8500_INT_ADP_PROBE_UNPLUG, .end = AB8500_INT_ADP_PROBE_UNPLUG, .flags = IORESOURCE_IRQ, }, }; static struct resource __devinitdata ab8500_temp_resources[] = { { .name = "AB8500_TEMP_WARM", .start = AB8500_INT_TEMP_WARM, .end = AB8500_INT_TEMP_WARM, .flags = IORESOURCE_IRQ, }, }; static struct mfd_cell __devinitdata ab8500_devs[] = { #ifdef CONFIG_DEBUG_FS { .name = "ab8500-debug", .num_resources = ARRAY_SIZE(ab8500_debug_resources), .resources = ab8500_debug_resources, }, #endif { .name = "ab8500-sysctrl", }, { .name = "ab8500-regulator", }, { .name = "ab8500-gpio", .num_resources = ARRAY_SIZE(ab8500_gpio_resources), .resources = ab8500_gpio_resources, }, { .name = "ab8500-gpadc", .num_resources = ARRAY_SIZE(ab8500_gpadc_resources), .resources = ab8500_gpadc_resources, }, { .name = "ab8500-rtc", .num_resources = ARRAY_SIZE(ab8500_rtc_resources), .resources = ab8500_rtc_resources, }, { .name = "ab8500-charger", .num_resources = ARRAY_SIZE(ab8500_charger_resources), .resources = ab8500_charger_resources, }, { .name = "ab8500-btemp", .num_resources = ARRAY_SIZE(ab8500_btemp_resources), .resources = ab8500_btemp_resources, }, { .name = "ab8500-fg", .num_resources = ARRAY_SIZE(ab8500_fg_resources), .resources = ab8500_fg_resources, }, { .name = "ab8500-chargalg", .num_resources = ARRAY_SIZE(ab8500_chargalg_resources), .resources = ab8500_chargalg_resources, }, { .name = "ab8500-acc-det", .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources), .resources = ab8500_av_acc_detect_resources, }, { .name = "ab8500-codec", }, { .name = "ab8500-usb", .num_resources = ARRAY_SIZE(ab8500_usb_resources), .resources = ab8500_usb_resources, }, { .name = "ab8500-poweron-key", .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources), .resources = ab8500_poweronkey_db_resources, }, { .name = "ab8500-pwm", .id = 1, }, { .name = "ab8500-pwm", .id = 2, }, { .name = "ab8500-pwm", .id = 3, }, { .name = "ab8500-leds", }, { .name = "ab8500-denc", }, { .name = "ab8500-temp", .num_resources = ARRAY_SIZE(ab8500_temp_resources), .resources = ab8500_temp_resources, }, }; static ssize_t show_chip_id(struct device *dev, struct device_attribute *attr, char *buf) { struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL); } /* * ab8500 has switched off due to (SWITCH_OFF_STATUS): * 0x01 Swoff bit programming * 0x02 Thermal protection activation * 0x04 Vbat lower then BattOk falling threshold * 0x08 Watchdog expired * 0x10 Non presence of 32kHz clock * 0x20 Battery level lower than power on reset threshold * 0x40 Power on key 1 pressed longer than 10 seconds * 0x80 DB8500 thermal shutdown */ static ssize_t show_switch_off_status(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u8 value; struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); ret = get_register_interruptible(ab8500, AB8500_RTC, AB8500_SWITCH_OFF_STATUS, &value); if (ret < 0) return ret; return sprintf(buf, "%#x\n", value); } /* * ab8500 has turned on due to (TURN_ON_STATUS): * 0x01 PORnVbat * 0x02 PonKey1dbF * 0x04 PonKey2dbF * 0x08 RTCAlarm * 0x10 MainChDet * 0x20 VbusDet * 0x40 UsbIDDetect * 0x80 Reserved */ static ssize_t show_turn_on_status(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u8 value; struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, AB8500_TURN_ON_STATUS, &value); if (ret < 0) return ret; return sprintf(buf, "%#x\n", value); } static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); static struct attribute *ab8500_sysfs_entries[] = { &dev_attr_chip_id.attr, &dev_attr_switch_off_status.attr, &dev_attr_turn_on_status.attr, NULL, }; static struct attribute_group ab8500_attr_group = { .attrs = ab8500_sysfs_entries, }; int __devinit ab8500_init(struct ab8500 *ab8500) { struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev); int ret; int i; u8 value; if (plat) ab8500->irq_base = plat->irq_base; mutex_init(&ab8500->lock); mutex_init(&ab8500->irq_lock); ret = get_register_interruptible(ab8500, AB8500_MISC, AB8500_REV_REG, &value); if (ret < 0) return ret; switch (value) { case AB8500_CUT1P0: case AB8500_CUT1P1: case AB8500_CUT2P0: case AB8500_CUT3P0: case AB8500_CUT3P3: dev_info(ab8500->dev, "detected chip, revision: %#x\n", value); break; default: dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value); return -EINVAL; } ab8500->chip_id = value; /* * ab8500 has switched off due to (SWITCH_OFF_STATUS): * 0x01 Swoff bit programming * 0x02 Thermal protection activation * 0x04 Vbat lower then BattOk falling threshold * 0x08 Watchdog expired * 0x10 Non presence of 32kHz clock * 0x20 Battery level lower than power on reset threshold * 0x40 Power on key 1 pressed longer than 10 seconds * 0x80 DB8500 thermal shutdown */ ret = get_register_interruptible(ab8500, AB8500_RTC, AB8500_SWITCH_OFF_STATUS, &value); if (ret < 0) return ret; dev_info(ab8500->dev, "switch off status: %#x", value); if (plat && plat->init) plat->init(ab8500); /* Clear and mask all interrupts */ for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { /* Interrupt register 12 doesn't exist prior to version 2.0 */ if (ab8500_irq_regoffset[i] == 11 && ab8500->chip_id < AB8500_CUT2P0) continue; get_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i], &value); set_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff); } ret = abx500_register_ops(ab8500->dev, &ab8500_ops); if (ret) return ret; for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) ab8500->mask[i] = ab8500->oldmask[i] = 0xff; if (ab8500->irq_base) { ret = ab8500_irq_init(ab8500); if (ret) return ret; ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq, IRQF_ONESHOT | IRQF_NO_SUSPEND, "ab8500", ab8500); if (ret) goto out_removeirq; } ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, ARRAY_SIZE(ab8500_devs), NULL, ab8500->irq_base); if (ret) goto out_freeirq; ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group); if (ret) dev_err(ab8500->dev, "error creating sysfs entries\n"); return ret; out_freeirq: if (ab8500->irq_base) { free_irq(ab8500->irq, ab8500); out_removeirq: ab8500_irq_remove(ab8500); } return ret; } int __devexit ab8500_exit(struct ab8500 *ab8500) { sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group); mfd_remove_devices(ab8500->dev); if (ab8500->irq_base) { free_irq(ab8500->irq, ab8500); ab8500_irq_remove(ab8500); } return 0; } MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent"); MODULE_DESCRIPTION("AB8500 MFD core"); MODULE_LICENSE("GPL v2");