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@xxxxxx>
Cc: Joseph Chan <JosephChan@xxxxxxxxxx>
---
drivers/video/via/lcd.c | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)
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");
--
1.6.3.2
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