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driver, iio, mpuxxx: add _RATE_DEBUG log

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Change-Id: Iabfb6c389013fca39e023f0c9dc96882aef16d40
Signed-off-by: Zorro Liu <lyx@rock-chips.com>
This commit is contained in:
Zorro Liu
2016-06-16 16:45:03 +08:00
parent 41d5274733
commit 2685b36475
1 changed files with 99 additions and 1 deletions
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100
drivers/staging/iio/imu/inv_mpu/inv_mpu_ring.c
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@@ -496,6 +496,16 @@ static int set_inv_enable(struct iio_dev *indio_dev,
return 0;
}
/* #define _RATE_DEBUG */
#ifdef _RATE_DEBUG
static s64 tm_irq_min = -1;
static s64 tm_irq_max = -1;
static s64 tm_irq_sum = -1;
static s64 tm_irq_last_print = -1;
static s64 tm_irq_count = -1;
#endif
/**
* inv_irq_handler() - Cache a timestamp at each data ready interrupt.
*/
@@ -510,6 +520,31 @@ static irqreturn_t inv_irq_handler(int irq, void *dev_id)
timestamp = get_time_ns();
time_since_last_irq = timestamp - st->last_isr_time;
spin_lock(&st->time_stamp_lock);
#ifdef _RATE_DEBUG
if (tm_irq_min <= 0 && tm_irq_max <= 0) {
tm_irq_min = time_since_last_irq;
tm_irq_max = time_since_last_irq;
tm_irq_sum = 0;
tm_irq_count = 0;
} else if (time_since_last_irq < tm_irq_min) {
tm_irq_min = time_since_last_irq;
} else if (time_since_last_irq > tm_irq_max) {
tm_irq_max = time_since_last_irq;
}
tm_irq_sum += time_since_last_irq;
tm_irq_count++;
if (unlikely((timestamp - tm_irq_last_print) >= 1000000000)) {
pr_info("MPU Interrupt: %lld,%d,%lld\n", tm_irq_min, (u32)tm_irq_sum / (u32)tm_irq_count, tm_irq_max);
tm_irq_last_print = timestamp;
tm_irq_min = 0;
tm_irq_max = 0;
tm_irq_count = 0;
tm_irq_sum = 0;
}
#endif
catch_up = 0;
while ((time_since_last_irq > st->irq_dur_ns * 2) &&
(catch_up < MAX_CATCH_UP) &&
@@ -683,6 +718,14 @@ flush_fifo:
return IRQ_HANDLED;
}
#ifdef _RATE_DEBUG
static s64 tm_min = -1;
static s64 tm_max = -1;
static s64 tm_sum = -1;
static s64 tm_last_print = -1;
static s64 tm_count = -1;
#endif
static int inv_report_gyro_accl_compass(struct iio_dev *indio_dev,
u8 *data, s64 t)
{
@@ -799,12 +842,41 @@ static int inv_report_gyro_accl_compass(struct iio_dev *indio_dev,
tmp = (u64 *)buf;
tmp[DIV_ROUND_UP(ind, 8)] = t;
if (ind > 0)
if (ind > 0) {
#ifdef _RATE_DEBUG
s64 tm_cur = get_time_ns();
s64 tm_delta = tm_cur - t;
if (tm_min <= 0 && tm_max <= 0) {
tm_min = tm_delta;
tm_max = tm_delta;
tm_sum = 0;
tm_count = 0;
} else if (tm_delta < tm_min) {
tm_min = tm_delta;
} else if (tm_delta > tm_max) {
tm_max = tm_delta;
}
tm_sum += tm_delta;
tm_count++;
if (unlikely((tm_cur - tm_last_print) >= 1000000000)) {
pr_info("MPU6050 report size: %d rate: %lld\n", ind, tm_count);
pr_info("MPU KRNL report: [%lld] %lld,%d,%lld\n", t, tm_min, (u32)tm_sum / (u32)tm_count, tm_max);
tm_last_print = tm_cur;
tm_min = 0;
tm_max = 0;
tm_count = 0;
tm_sum = 0;
}
#endif
#ifdef INV_KERNEL_3_10
iio_push_to_buffers(indio_dev, buf);
#else
iio_push_to_buffer(indio_dev->buffer, buf, t);
#endif
}
return 0;
}
@@ -876,6 +948,14 @@ irqreturn_t inv_read_fifo(int irq, void *dev_id)
s64 buf[8];
s8 *tmp;
#ifdef _RATE_DEBUG
s64 tm_i2c_sum = 0;
s64 tm = 0;
s64 tm_begin, tm_end;
tm_begin = get_time_ns();
#endif
mutex_lock(&indio_dev->mlock);
if (!(iio_buffer_enabled(indio_dev)))
goto end_session;
@@ -911,8 +991,14 @@ irqreturn_t inv_read_fifo(int irq, void *dev_id)
bytes_per_datum = get_bytes_per_datum(st);
fifo_count = 0;
if (bytes_per_datum != 0) {
#ifdef _RATE_DEBUG
tm = get_time_ns();
#endif
result = inv_plat_read(st, reg->fifo_count_h,
FIFO_COUNT_BYTE, data);
#ifdef _RATE_DEBUG
tm_i2c_sum += get_time_ns() - tm;
#endif
if (result)
goto end_session;
fifo_count = be16_to_cpup((__be16 *)(&data[0]));
@@ -948,8 +1034,14 @@ irqreturn_t inv_read_fifo(int irq, void *dev_id)
}
tmp = (s8 *)buf;
while ((bytes_per_datum != 0) && (fifo_count >= bytes_per_datum)) {
#ifdef _RATE_DEBUG
tm = get_time_ns();
#endif
result = inv_plat_read(st, reg->fifo_r_w, bytes_per_datum,
data);
#ifdef _RATE_DEBUG
tm_i2c_sum += get_time_ns() - tm;
#endif
if (result)
goto flush_fifo;
@@ -966,6 +1058,12 @@ irqreturn_t inv_read_fifo(int irq, void *dev_id)
end_session:
mutex_unlock(&indio_dev->mlock);
#ifdef _RATE_DEBUG
tm_end = get_time_ns();
if (tm_end - tm_begin > 700000)
pr_info("%s: [%lld] %lld %lld %lld\n", __func__, timestamp, tm_begin - timestamp, tm_i2c_sum, tm_end - tm_begin);
#endif
return IRQ_HANDLED;
flush_fifo: