evie/android_kernel_oneplus_msm8998
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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; lcd->enabled = true;
} }
mdelay(pd->power_on_delay); msleep(pd->power_on_delay);
out: out:
mutex_unlock(&lcd->lock); 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]); ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
if (ret) if (ret)
break; break;
} else } else {
udelay(wbuf[i+1]*1000); msleep(wbuf[i+1]);
}
i += 2; i += 2;
} }
@ -539,7 +540,7 @@ static int ld9040_ldi_init(struct ld9040 *lcd)
for (i = 0; i < ARRAY_SIZE(init_seq); i++) { for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
ret = ld9040_panel_send_sequence(lcd, init_seq[i]); ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
/* workaround: minimum delay time for transferring CMD */ /* workaround: minimum delay time for transferring CMD */
udelay(300); usleep_range(300, 310);
if (ret) if (ret)
break; break;
} }
@ -584,7 +585,7 @@ static int ld9040_power_on(struct ld9040 *lcd)
return -EFAULT; return -EFAULT;
} else { } else {
pd->reset(lcd->ld); pd->reset(lcd->ld);
mdelay(pd->reset_delay); msleep(pd->reset_delay);
} }
ret = ld9040_ldi_init(lcd); ret = ld9040_ldi_init(lcd);
@ -619,7 +620,7 @@ static int ld9040_power_off(struct ld9040 *lcd)
return -EIO; return -EIO;
} }
mdelay(pd->power_off_delay); msleep(pd->power_off_delay);
/* lcd power off */ /* lcd power off */
ld9040_regulator_disable(lcd); ld9040_regulator_disable(lcd);