diff options
Diffstat (limited to 'drivers/leds/leds-renesas-tpu.c')
| -rw-r--r-- | drivers/leds/leds-renesas-tpu.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/leds/leds-renesas-tpu.c b/drivers/leds/leds-renesas-tpu.c index e0fff1ca5923..d3c2b7e68fbc 100644 --- a/drivers/leds/leds-renesas-tpu.c +++ b/drivers/leds/leds-renesas-tpu.c @@ -133,24 +133,24 @@ static int r_tpu_enable(struct r_tpu_priv *p, enum led_brightness brightness) rate = clk_get_rate(p->clk); /* pick the lowest acceptable rate */ - for (k = 0; k < ARRAY_SIZE(prescaler); k++) - if ((rate / prescaler[k]) < p->min_rate) + for (k = ARRAY_SIZE(prescaler) - 1; k >= 0; k--) + if ((rate / prescaler[k]) >= p->min_rate) break; - if (!k) { + if (k < 0) { dev_err(&p->pdev->dev, "clock rate mismatch\n"); goto err0; } dev_dbg(&p->pdev->dev, "rate = %lu, prescaler %u\n", - rate, prescaler[k - 1]); + rate, prescaler[k]); /* clear TCNT on TGRB match, count on rising edge, set prescaler */ - r_tpu_write(p, TCR, 0x0040 | (k - 1)); + r_tpu_write(p, TCR, 0x0040 | k); /* output 0 until TGRA, output 1 until TGRB */ r_tpu_write(p, TIOR, 0x0002); - rate /= prescaler[k - 1] * p->refresh_rate; + rate /= prescaler[k] * p->refresh_rate; r_tpu_write(p, TGRB, rate); dev_dbg(&p->pdev->dev, "TRGB = 0x%04lx\n", rate); |