diff options
| author | Jingoo Han <jg1.han@samsung.com> | 2013-02-22 01:43:15 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-22 02:22:21 +0100 |
| commit | d2fff29042877154c3bc051a147bc7964a2e5fe2 (patch) | |
| tree | 204a00450587f76b540e4af325336727cb61a668 /drivers | |
| parent | backlight: add lms501kf03 LCD driver (diff) | |
| download | linux-d2fff29042877154c3bc051a147bc7964a2e5fe2.tar.xz linux-d2fff29042877154c3bc051a147bc7964a2e5fe2.zip | |
backlight: ld9040: use sleep instead of delay
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/backlight/ld9040.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c index 1cb352418513..a52a6a7e572e 100644 --- a/drivers/video/backlight/ld9040.c +++ b/drivers/video/backlight/ld9040.c @@ -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); |