Switch back to the previous set resolution when unblanking the screen.

SVN-Revision: 14768

target/linux/s3c24xx/patches-2.6.28/010-preserve-resolution.patch

@@ -0,0 +1,48 @@
+diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
+index a1d48dd..2ca1bd4 100644
+--- a/drivers/video/display/jbt6k74.c
++++ b/drivers/video/display/jbt6k74.c
+@@ -443,8 +443,17 @@ int jbt6k74_enter_state(struct jbt_info *jbt, enum jbt_state new_state)
+ 		break;
+ 	}
+ 	
+-	if (rc == 0)
++	if (rc == 0) {
++		switch (new_state) {
++		case JBT_STATE_NORMAL:
++		case JBT_STATE_QVGA_NORMAL:
++			jbt->last_state = new_state;
++			break;
++		default:
++			break;
++		}
+ 		jbt->state = new_state;
++	}
+ 
+ 	return rc;
+ }
+@@ -595,7 +604,14 @@ static int fb_notifier_callback(struct notifier_block *self,
+ 	switch (fb_blank) {
+ 	case FB_BLANK_UNBLANK:
+ 		dev_info(&jbt->spi_dev->dev, "**** jbt6k74 unblank\n");
+-		jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
++		switch (jbt->last_state) {
++		case JBT_STATE_QVGA_NORMAL:
++			jbt6k74_enter_state(jbt, JBT_STATE_QVGA_NORMAL);
++			break;
++		default:
++			jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
++			break;
++		}
+ 		break;
+ 	case FB_BLANK_NORMAL:
+ 		dev_info(&jbt->spi_dev->dev, "**** jbt6k74 normal\n");
+@@ -720,8 +736,6 @@ static int jbt_suspend(struct spi_device *spi, pm_message_t state)
+ {
+ 	struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
+ 
+-	/* Save mode for resume */
+-	jbt->last_state = jbt->state;
+ 	/* FIXME: deep standby causes WSOD on certain devices. We use
+ 	 * sleep as workaround */
+ 	jbt6k74_enter_state(jbt, JBT_STATE_SLEEP);