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Subject[PATCH 09/10] staging/xgifb: Consolidate XGI_EnableChISLCD and XGI_DisableChISLCD
Date
These two functions share the same code except one line - thus we can
simply merge them and add a parameter to switch between both variants.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
---
drivers/staging/xgifb/vb_setmode.c | 48 +++++++++--------------------------
1 files changed, 13 insertions(+), 35 deletions(-)

diff --git a/drivers/staging/xgifb/vb_setmode.c b/drivers/staging/xgifb/vb_setmode.c
index 1ff1178..c5faa89 100644
--- a/drivers/staging/xgifb/vb_setmode.c
+++ b/drivers/staging/xgifb/vb_setmode.c
@@ -4684,43 +4684,21 @@ static unsigned char XGI_IsLCDON(struct vb_device_info *pVBInfo)
}

/* --------------------------------------------------------------------- */
-/* Function : XGI_DisableChISLCD */
-/* Input : */
-/* Output : 0 -> Not LCD Mode */
-/* Description : */
-/* --------------------------------------------------------------------- */
-static unsigned char XGI_DisableChISLCD(struct vb_device_info *pVBInfo)
-{
- unsigned short tempbx, tempah;
-
- tempbx = pVBInfo->SetFlag & (DisableChA | DisableChB);
- tempah = ~((unsigned short) xgifb_reg_get(pVBInfo->Part1Port, 0x2E));
-
- if (tempbx & (EnableChA | DisableChA)) {
- if (!(tempah & 0x08)) /* Chk LCDA Mode */
- return 0;
- }
-
- if (!(tempbx & (EnableChB | DisableChB)))
- return 0;
-
- if (tempah & 0x01) /* Chk LCDB Mode */
- return 1;
-
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
/* Function : XGI_EnableChISLCD */
/* Input : */
/* Output : 0 -> Not LCD mode */
-/* Description : */
+/* Description : if bool enable = true -> enable, else disable */
/* --------------------------------------------------------------------- */
-static unsigned char XGI_EnableChISLCD(struct vb_device_info *pVBInfo)
+static unsigned char XGI_EnableChISLCD(struct vb_device_info *pVBInfo,
+ bool enable)
{
unsigned short tempbx, tempah;

- tempbx = pVBInfo->SetFlag & (EnableChA | EnableChB);
+ if (enable)
+ tempbx = pVBInfo->SetFlag & (EnableChA | EnableChB);
+ else
+ tempbx = pVBInfo->SetFlag & (DisableChA | DisableChB);
+
tempah = ~((unsigned short) xgifb_reg_get(pVBInfo->Part1Port, 0x2E));

if (tempbx & (EnableChA | DisableChA)) {
@@ -4772,9 +4750,9 @@ static void XGI_DisableBridge(struct xgifb_video_info *xgifb_info,

if (pVBInfo->VBType & (VB_SIS302LV | VB_XGI301C)) {
if (((pVBInfo->VBInfo &
- (SetCRT2ToLCD | XGI_SetCRT2ToLCDA)))
- || (XGI_DisableChISLCD(pVBInfo))
- || (XGI_IsLCDON(pVBInfo)))
+ (SetCRT2ToLCD | XGI_SetCRT2ToLCDA))) ||
+ (XGI_EnableChISLCD(pVBInfo, false)) ||
+ (XGI_IsLCDON(pVBInfo)))
/* LVDS Driver power down */
xgifb_reg_or(pVBInfo->Part4Port, 0x30, 0x80);
}
@@ -5731,8 +5709,8 @@ static void XGI_EnableBridge(struct xgifb_video_info *xgifb_info,
xgifb_reg_and_or(pVBInfo->Part2Port, 0x00, ~0xE0,
0x20); /* shampoo 0129 */
if (pVBInfo->VBType & (VB_SIS302LV | VB_XGI301C)) {
- if (!XGI_DisableChISLCD(pVBInfo)) {
- if (XGI_EnableChISLCD(pVBInfo) ||
+ if (!XGI_EnableChISLCD(pVBInfo, false)) {
+ if (XGI_EnableChISLCD(pVBInfo, true) ||
(pVBInfo->VBInfo &
(SetCRT2ToLCD | XGI_SetCRT2ToLCDA)))
/* LVDS PLL power on */
--
1.7.8.6


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