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backlight: ld9040: use sleep instead of delay

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Replace mdelay with msleep to remove the busy loop waiting.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2013-02-21 16:43:15 -08:00 committed by Linus Torvalds
parent 1be9ca2579
commit d2fff29042
1 changed files with 7 additions and 6 deletions
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13
drivers/video/backlight/ld9040.c
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@ -78,7 +78,7 @@ static void ld9040_regulator_enable(struct ld9040 *lcd)
lcd->enabled = true;
}
mdelay(pd->power_on_delay);
msleep(pd->power_on_delay);
out:
mutex_unlock(&lcd->lock);
}
@ -474,8 +474,9 @@ static int ld9040_panel_send_sequence(struct ld9040 *lcd,
ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
if (ret)
break;
} else
udelay(wbuf[i+1]*1000);
} else {
msleep(wbuf[i+1]);
}
i += 2;
}
@ -539,7 +540,7 @@ static int ld9040_ldi_init(struct ld9040 *lcd)
for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
/* workaround: minimum delay time for transferring CMD */
udelay(300);
usleep_range(300, 310);
if (ret)
break;
}
@ -584,7 +585,7 @@ static int ld9040_power_on(struct ld9040 *lcd)
return -EFAULT;
} else {
pd->reset(lcd->ld);
mdelay(pd->reset_delay);
msleep(pd->reset_delay);
}
ret = ld9040_ldi_init(lcd);
@ -619,7 +620,7 @@ static int ld9040_power_off(struct ld9040 *lcd)
return -EIO;
}
mdelay(pd->power_off_delay);
msleep(pd->power_off_delay);
/* lcd power off */
ld9040_regulator_disable(lcd);