From: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Date: Sat, 22 May 2010 21:32:32 +0000 (+0000)
Subject: viafb: improve lcd code readability
X-Git-Tag: v2.6.36-rc5~24^2~12
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=119b953a80d28821a56567d84dab860b0edc7940;p=profile%2Fcommon%2Fkernel-common.git

viafb: improve lcd code readability

viafb: improve lcd code readability

This changes the code to better reflect that we can (currently) only
perform upscaling.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
---

diff --git a/drivers/video/via/lcd.c b/drivers/video/via/lcd.c
index 438a106..55cb4ec 100644
--- a/drivers/video/via/lcd.c
+++ b/drivers/video/via/lcd.c
@@ -437,7 +437,7 @@ static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
 	viafb_write_reg_mask(CR79, VIACR, 0x07, BIT0 + BIT1 + BIT2);
 
 	/* Check if expansion for horizontal */
-	if (set_hres != panel_hres) {
+	if (set_hres < panel_hres) {
 		/* Load Horizontal Scaling Factor */
 		switch (viaparinfo->chip_info->gfx_chip_name) {
 		case UNICHROME_CLE266:
@@ -477,7 +477,7 @@ static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
 	}
 
 	/* Check if expansion for vertical */
-	if (set_vres != panel_vres) {
+	if (set_vres < panel_vres) {
 		/* Load Vertical Scaling Factor */
 		switch (viaparinfo->chip_info->gfx_chip_name) {
 		case UNICHROME_CLE266:
@@ -643,9 +643,8 @@ void viafb_lcd_set_mode(struct crt_mode_table *mode_crt_table,
 				 (mode_crt_reg, panel_crt_reg), IGA1);
 	} else {
 		/* Expansion */
-		if ((plvds_setting_info->display_method ==
-		     LCD_EXPANDSION) & ((set_hres != panel_hres)
-					|| (set_vres != panel_vres))) {
+		if (plvds_setting_info->display_method == LCD_EXPANDSION
+			&& (set_hres < panel_hres || set_vres < panel_vres)) {
 			/* expansion timing IGA2 loaded panel set timing*/
 			viafb_load_crtc_timing(panel_crt_reg, IGA2);
 			DEBUG_MSG(KERN_INFO "viafb_load_crtc_timing!!\n");