diff options
| -rw-r--r-- | drivers/hwmon/lis3lv02d.c | 88 | ||||
| -rw-r--r-- | drivers/hwmon/lis3lv02d.h | 3 |
2 files changed, 82 insertions, 9 deletions
diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c index 0780de0550d..0cee73a6124 100644 --- a/drivers/hwmon/lis3lv02d.c +++ b/drivers/hwmon/lis3lv02d.c @@ -48,6 +48,13 @@ #define LIS3_SYSFS_POWERDOWN_DELAY 5000 /* In milliseconds */ +#define SELFTEST_OK 0 +#define SELFTEST_FAIL -1 +#define SELFTEST_IRQ -2 + +#define IRQ_LINE0 0 +#define IRQ_LINE1 1 + /* * The sensor can also generate interrupts (DRDY) but it's pretty pointless * because they are generated even if the data do not change. So it's better @@ -226,8 +233,25 @@ static int lis3lv02d_selftest(struct lis3lv02d *lis3, s16 results[3]) s16 x, y, z; u8 selftest; int ret; + u8 ctrl_reg_data; + unsigned char irq_cfg; mutex_lock(&lis3->mutex); + + irq_cfg = lis3->irq_cfg; + if (lis3_dev.whoami == WAI_8B) { + lis3->data_ready_count[IRQ_LINE0] = 0; + lis3->data_ready_count[IRQ_LINE1] = 0; + + /* Change interrupt cfg to data ready for selftest */ + atomic_inc(&lis3_dev.wake_thread); + lis3->irq_cfg = LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY; + lis3->read(lis3, CTRL_REG3, &ctrl_reg_data); + lis3->write(lis3, CTRL_REG3, (ctrl_reg_data & + ~(LIS3_IRQ1_MASK | LIS3_IRQ2_MASK)) | + (LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY)); + } + if (lis3_dev.whoami == WAI_3DC) { ctlreg = CTRL_REG4; selftest = CTRL4_ST0; @@ -257,13 +281,33 @@ static int lis3lv02d_selftest(struct lis3lv02d *lis3, s16 results[3]) results[2] = z - lis3->read_data(lis3, OUTZ); ret = 0; + + if (lis3_dev.whoami == WAI_8B) { + /* Restore original interrupt configuration */ + atomic_dec(&lis3_dev.wake_thread); + lis3->write(lis3, CTRL_REG3, ctrl_reg_data); + lis3->irq_cfg = irq_cfg; + + if ((irq_cfg & LIS3_IRQ1_MASK) && + lis3->data_ready_count[IRQ_LINE0] < 2) { + ret = SELFTEST_IRQ; + goto fail; + } + + if ((irq_cfg & LIS3_IRQ2_MASK) && + lis3->data_ready_count[IRQ_LINE1] < 2) { + ret = SELFTEST_IRQ; + goto fail; + } + } + if (lis3->pdata) { int i; for (i = 0; i < 3; i++) { /* Check against selftest acceptance limits */ if ((results[i] < lis3->pdata->st_min_limits[i]) || (results[i] > lis3->pdata->st_max_limits[i])) { - ret = -EIO; + ret = SELFTEST_FAIL; goto fail; } } @@ -426,13 +470,24 @@ static void lis302dl_interrupt_handle_click(struct lis3lv02d *lis3) mutex_unlock(&lis3->mutex); } -static irqreturn_t lis302dl_interrupt_thread1_8b(int irq, void *data) +static inline void lis302dl_data_ready(struct lis3lv02d *lis3, int index) { + int dummy; + + /* Dummy read to ack interrupt */ + lis3lv02d_get_xyz(lis3, &dummy, &dummy, &dummy); + lis3->data_ready_count[index]++; +} +static irqreturn_t lis302dl_interrupt_thread1_8b(int irq, void *data) +{ struct lis3lv02d *lis3 = data; + u8 irq_cfg = lis3->irq_cfg & LIS3_IRQ1_MASK; - if ((lis3->irq_cfg & LIS3_IRQ1_MASK) == LIS3_IRQ1_CLICK) + if (irq_cfg == LIS3_IRQ1_CLICK) lis302dl_interrupt_handle_click(lis3); + else if (unlikely(irq_cfg == LIS3_IRQ1_DATA_READY)) + lis302dl_data_ready(lis3, IRQ_LINE0); else lis3lv02d_joystick_poll(lis3->idev); @@ -441,11 +496,13 @@ static irqreturn_t lis302dl_interrupt_thread1_8b(int irq, void *data) static irqreturn_t lis302dl_interrupt_thread2_8b(int irq, void *data) { - struct lis3lv02d *lis3 = data; + u8 irq_cfg = lis3->irq_cfg & LIS3_IRQ2_MASK; - if ((lis3->irq_cfg & LIS3_IRQ2_MASK) == LIS3_IRQ2_CLICK) + if (irq_cfg == LIS3_IRQ2_CLICK) lis302dl_interrupt_handle_click(lis3); + else if (unlikely(irq_cfg == LIS3_IRQ2_DATA_READY)) + lis302dl_data_ready(lis3, IRQ_LINE1); else lis3lv02d_joystick_poll(lis3->idev); @@ -648,12 +705,27 @@ static void lis3lv02d_sysfs_poweron(struct lis3lv02d *lis3) static ssize_t lis3lv02d_selftest_show(struct device *dev, struct device_attribute *attr, char *buf) { - int result; s16 values[3]; + static const char ok[] = "OK"; + static const char fail[] = "FAIL"; + static const char irq[] = "FAIL_IRQ"; + const char *res; + lis3lv02d_sysfs_poweron(&lis3_dev); - result = lis3lv02d_selftest(&lis3_dev, values); - return sprintf(buf, "%s %d %d %d\n", result == 0 ? "OK" : "FAIL", + switch (lis3lv02d_selftest(&lis3_dev, values)) { + case SELFTEST_FAIL: + res = fail; + break; + case SELFTEST_IRQ: + res = irq; + break; + case SELFTEST_OK: + default: + res = ok; + break; + } + return sprintf(buf, "%s %d %d %d\n", res, values[0], values[1], values[2]); } diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/hwmon/lis3lv02d.h index fdbe899a7f1..a1939589eb2 100644 --- a/drivers/hwmon/lis3lv02d.h +++ b/drivers/hwmon/lis3lv02d.h @@ -273,7 +273,8 @@ struct lis3lv02d { struct fasync_struct *async_queue; /* queue for the misc device */ wait_queue_head_t misc_wait; /* Wait queue for the misc device */ unsigned long misc_opened; /* bit0: whether the device is open */ - atomic_t wake_thread; + int data_ready_count[2]; + atomic_t wake_thread; unsigned char irq_cfg; struct lis3lv02d_platform_data *pdata; /* for passing board config */ |