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viafb: cosmetic cleanup of function integrated_lvds_enable() 

A humble attempt to simplify the coding style to improve readability

Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Harald Welte 2009-12-15 16:46:44 -08:00 committed by Linus Torvalds
parent 4562aea791
commit e6bf0d2c9a
1 changed files with 14 additions and 26 deletions
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38
drivers/video/via/lcd.c
View File

@ -1134,45 +1134,33 @@ static void integrated_lvds_enable(struct lvds_setting_information
*plvds_setting_info,
struct lvds_chip_information *plvds_chip_info)
{
bool turn_on_first_powersequence = false;
bool turn_on_second_powersequence = false;
DEBUG_MSG(KERN_INFO "integrated_lvds_enable, out_interface:%d\n",
plvds_chip_info->output_interface);
if (plvds_setting_info->lcd_mode == LCD_SPWG)
viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT0 + BIT1);
else
viafb_write_reg_mask(CRD2, VIACR, 0x03, BIT0 + BIT1);
if (INTERFACE_LVDS0LVDS1 == plvds_chip_info->output_interface)
turn_on_first_powersequence = true;
if (INTERFACE_LVDS0 == plvds_chip_info->output_interface)
turn_on_first_powersequence = true;
if (INTERFACE_LVDS1 == plvds_chip_info->output_interface)
turn_on_second_powersequence = true;
if (turn_on_second_powersequence) {
/* Use second power sequence control: */
/* Use hardware control power sequence. */
viafb_write_reg_mask(CRD3, VIACR, 0, BIT0);
/* Turn on back light. */
viafb_write_reg_mask(CRD3, VIACR, 0, BIT6 + BIT7);
/* Turn on hardware power sequence. */
viafb_write_reg_mask(CRD4, VIACR, 0x02, BIT1);
}
if (turn_on_first_powersequence) {
switch (plvds_chip_info->output_interface) {
case INTERFACE_LVDS0LVDS1:
case INTERFACE_LVDS0:
/* Use first power sequence control: */
/* Use hardware control power sequence. */
viafb_write_reg_mask(CR91, VIACR, 0, BIT0);
/* Turn on back light. */
viafb_write_reg_mask(CR91, VIACR, 0, BIT6 + BIT7);
/* Turn on hardware power sequence. */
viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3);
break;
case INTERFACE_LVDS1:
/* Use second power sequence control: */
/* Use hardware control power sequence. */
viafb_write_reg_mask(CRD3, VIACR, 0, BIT0);
/* Turn on back light. */
viafb_write_reg_mask(CRD3, VIACR, 0, BIT6 + BIT7);
/* Turn on hardware power sequence. */
viafb_write_reg_mask(CRD4, VIACR, 0x02, BIT1);
break;
}
/* Turn DFP High/Low pad on. */