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Commit d2fff290 authored by Jingoo Han's avatar Jingoo Han Committed by Linus Torvalds
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backlight: ld9040: use sleep instead of delay 



Replace mdelay with msleep to remove the busy loop waiting.

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1be9ca25

drivers/video/backlight/ld9040.c

+7 −6
Original line number Original line Diff line number Diff line
@@ -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);