Another fix for WS

[21:43] <gena2x> radekp: fix WS
[21:43] <gena2x> on blank/unblank and similar (rotating, resume)
[21:44] <gena2x> two patches in face
[21:44] <gena2x> *fact
[21:44] <gena2x> 1. added wait for voltage stabilisation
[21:46] <gena2x> 2. do blanking instantly
[21:46] <gena2x> because of (2) you'll see brief WS while boot/unblank/resume (all unblank situations)
[21:47] <gena2x> 200 is random

drivers/video/backlight/jbt6k74.c

@@ -218,6 +218,8 @@ static int jbt_init_regs(struct jbt_info *jbt)
 	 * to avoid red / blue flicker
 	 */
 	ret |= jbt_reg_write(jbt, JBT_REG_ASW_SLEW, 0x00 | (1 << 5));
+	//ret |= jbt_reg_write(jbt, JBT_REG_ASW_SLEW, 0x02);
+
 	ret |= jbt_reg_write(jbt, JBT_REG_DUMMY_DISPLAY, 0x00);
 
 	ret |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_A, 0x11);
@@ -267,6 +269,7 @@ static int jbt_standby_to_sleep(struct jbt_info *jbt)
 
 	gpio_set_value_cansleep(pdata->gpio_reset, 1);
 	ret = regulator_bulk_enable(ARRAY_SIZE(jbt->supplies), jbt->supplies);
+	mdelay (200);
 
 	/* three times command zero */
 	ret |= jbt_reg_write_nodata(jbt, 0x00);
@@ -279,11 +282,17 @@ static int jbt_standby_to_sleep(struct jbt_info *jbt)
 	/* deep standby out */
 	ret |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x11);
 	mdelay(1);
+	if (ret != 0)
+		printk (KERN_ERR "Ignored ret value:%i",ret);
+
 	ret = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x28);
 
 	/* (re)initialize register set */
 	ret |= jbt_init_regs(jbt);
 
+	if (ret != 0)
+		printk (KERN_ERR "Ignored ret value2:%i",ret);
+
 	return ret ? -EIO : 0;
 }
 
@@ -627,7 +636,7 @@ static void jbt_blank_worker(struct work_struct *work)
 						blank_work.work);
 
 	switch (jbt->blank_mode) {
-	case FB_BLANK_NORMAL:
+		case FB_BLANK_NORMAL:
 		jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_SLEEP);
 		break;
 	case FB_BLANK_POWERDOWN:
@@ -661,7 +670,7 @@ static int jbt6k74_set_power(struct lcd_device *ld, int power)
 	struct jbt_info *jbt = dev_get_drvdata(&ld->dev);
 
 	jbt->blank_mode = power;
-	cancel_rearming_delayed_work(&jbt->blank_work);
+	//cancel_rearming_delayed_work(&jbt->blank_work);
 
 	switch (power) {
 	case FB_BLANK_UNBLANK:
@@ -675,7 +684,9 @@ static int jbt6k74_set_power(struct lcd_device *ld, int power)
 		break;
 	case FB_BLANK_POWERDOWN:
 		dev_dbg(&jbt->spi->dev, "powerdown\n");
-		ret = schedule_delayed_work(&jbt->blank_work, HZ);
+		//ret = schedule_delayed_work(&jbt->blank_work, HZ);
+		jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY);
+		ret = 1;
 		break;
 	default:
 		break;