diff options
| -rwxr-xr-x | drivers/mfd/ab5500-core.c | 100 | ||||
| -rw-r--r-- | include/linux/mfd/abx500.h | 9 |
2 files changed, 105 insertions, 4 deletions
diff --git a/drivers/mfd/ab5500-core.c b/drivers/mfd/ab5500-core.c index cf7de4d7443..91f6d25f6e9 100755 --- a/drivers/mfd/ab5500-core.c +++ b/drivers/mfd/ab5500-core.c @@ -51,6 +51,18 @@ #define AB5500_CHIP_ID (0x20) #define AB5500_INTERRUPTS 0x01FFFFFF +/* Turn On Status Event */ +#define RTC_ALARM 0x80 +#define POW_KEY_2_ON 0x20 +#define POW_KEY_1_ON 0x08 +#define POR_ON_VBAT 0x01 +#define VBUS_DET 0x02 +#define VBUS_CH_DROP_R 0x08 +#define USB_CH_DET_DONE 0x02 + +/* Global Variables */ +u8 turn_on_stat = 0x00; + /** * struct ab5500_bank * @slave_addr: I2C slave_addr found in AB5500 specification @@ -794,6 +806,34 @@ static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = { }, }; +static ssize_t show_chip_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ab5500 *ab5500; + + ab5500 = dev_get_drvdata(dev); + return sprintf(buf, "%#x\n", ab5500 ? ab5500->chip_id : -EINVAL); +} + +static ssize_t show_turn_on_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%#x\n", turn_on_stat); +} + +static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); +static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); + +static struct attribute *ab5500_sysfs_entries[] = { + &dev_attr_chip_id.attr, + &dev_attr_turn_on_status.attr, + NULL, +}; + +static struct attribute_group ab5500_attr_group = { + .attrs = ab5500_sysfs_entries, +}; + /* * Functionality for getting/setting register values. */ @@ -2357,6 +2397,7 @@ static int __init ab5500_probe(struct platform_device *pdev) struct resource *res; int err; int i; + u8 val; ab = kzalloc(sizeof(struct ab5500), GFP_KERNEL); if (!ab) { @@ -2413,11 +2454,52 @@ static int __init ab5500_probe(struct platform_device *pdev) ab->num_event_reg = AB5500_NUM_IRQ_REGS; else ab->num_event_reg = AB5500_NUM_EVENT_V1_REG; + + /* Read the latch regs to know the reason for turn on */ + err = get_register_interruptible(ab, AB5500_BANK_IT, + AB5500_IT_LATCH0_REG + 1, &val); + if (err) + goto exit_no_detect; + if (val & RTC_ALARM) /* RTCAlarm */ + turn_on_stat = RTC_ALARM_EVENT; + if (val & POW_KEY_2_ON) /* PonKey2dbR */ + turn_on_stat |= P_ON_KEY2_EVENT; + if (val & POW_KEY_1_ON) /* PonKey1dbR */ + turn_on_stat |= P_ON_KEY1_EVENT; + + err = get_register_interruptible(ab, AB5500_BANK_IT, + AB5500_IT_LATCH0_REG + 2, &val); + if (err) + goto exit_no_detect; + if (val & POR_ON_VBAT) + /* PORnVbat */ + turn_on_stat |= POR_ON_VBAT_EVENT ; + err = get_register_interruptible(ab, AB5500_BANK_IT, + AB5500_IT_LATCH0_REG + 8, &val); + if (err) + goto exit_no_detect; + if (val & VBUS_DET) + /* VbusDet */ + turn_on_stat |= VBUS_DET_EVENT; + err = get_register_interruptible(ab, AB5500_BANK_IT, + AB5500_IT_LATCH0_REG + 18, &val); + if (err) + goto exit_no_detect; + if (val & VBUS_CH_DROP_R) + /* VBUSChDrop */ + turn_on_stat |= VBUS_DET_EVENT; + err = get_register_interruptible(ab, AB5500_BANK_IT, + AB5500_IT_LATCH0_REG + 9, &val); + if (err) + goto exit_no_detect; + if (val & USB_CH_DET_DONE) + /* VBUSChDrop */ + turn_on_stat |= VBUS_DET_EVENT; + /* Clear and mask all interrupts */ for (i = 0; i < ab->num_event_reg; i++) { u8 latchreg = AB5500_IT_LATCH0_REG + i; u8 maskreg = AB5500_IT_MASK0_REG + i; - u8 val; get_register_interruptible(ab, AB5500_BANK_IT, latchreg, &val); set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff); @@ -2456,17 +2538,26 @@ static int __init ab5500_probe(struct platform_device *pdev) ab5500_plf_data->irq.base); if (err) { dev_err(&pdev->dev, "ab5500_mfd_add_device error\n"); - goto exit_no_irq; + goto exit_no_add_dev; } err = ab5500_setup(ab, ab5500_plf_data->init_settings, ab5500_plf_data->init_settings_sz); if (err) { dev_err(&pdev->dev, "ab5500_setup error\n"); - goto exit_no_irq; + goto exit_no_add_dev; } ab5500_setup_debugfs(ab); - return 0; + err = sysfs_create_group(&ab->dev->kobj, &ab5500_attr_group); + if (err) { + dev_err(&pdev->dev, "error creating sysfs entries\n"); + goto exit_no_debugfs; + } + return 0; +exit_no_debugfs: + ab5500_remove_debugfs(); +exit_no_add_dev: + mfd_remove_devices(&pdev->dev); exit_no_irq: if (ab->irq_base) { free_irq(ab->ab5500_irq, ab); @@ -2486,6 +2577,7 @@ static int __exit ab5500_remove(struct platform_device *pdev) * At this point, all subscribers should have unregistered * their notifiers so deactivate IRQ */ + sysfs_remove_group(&ab->dev->kobj, &ab5500_attr_group); ab5500_remove_debugfs(); mfd_remove_devices(&pdev->dev); if (ab->irq_base) { diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index cd2e36d0108..a0a1386774f 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -99,6 +99,15 @@ */ #define AB3100_NUM_REGULATORS 10 +/* Turn On Events */ +#define POR_ON_VBAT_EVENT (0x01 << 0) +#define P_ON_KEY1_EVENT (0x01 << 1) +#define P_ON_KEY2_EVENT (0x01 << 2) +#define RTC_ALARM_EVENT (0x01 << 3) +#define MAIN_CH_DET_EVENT (0x01 << 4) +#define VBUS_DET_EVENT (0x01 << 5) +#define USB_ID_DET_EVENT (0x01 << 6) + /** * struct ab3100 * @access_mutex: lock out concurrent accesses to the AB3100 registers |