staging/xgifb: Cleanup vb_device_info struct

This patch cleans up the vb_device_info struct and the related
functions.
The cleanup decreases the size of the compiled module by
about 10kB.

== Remove fields in vb_device_info that are never read: ==
pOutputSelect
pRGBSenseData
pRGBSenseData2
pVideoSenseData
pVideoSenseData2
pYCSenseData
pYCSenseData2
CR49
pXGINew_I2CDefinition
pCR2E
pCR2F
pCR46
pCR47
pCRD0
pCRDE
pSR40
pSR41
pCR47

=== Remove the corresponding 'constants' ===
XGI330_RGBSenseData
XGI330_RGBSenseData2
XGI330_VideoSenseData
XGI330_VideoSenseData2
XGI330_YCSenseData
XGI330_YCSenseData2
XGI330_CR49
XG40_I2CDefinition
XG21_CR2E
XG21_CR2F
XG21_CR46
XG21_CR47
XG27_CRD0
XG27_CRDE
XGI330_OutputSelect

== Remove 'constant fields' and replace constant value with #define ==
pSR07 = XGI330_SR07 -> 0x18
pSR1F = XGI330_SR1F -> 0
pSR23 = XGI330_SR23 -> 0xf6
pSR24 = XGI330_SR24 -> 0x0d
pSR33 = XGI330_SR33 ->0
pCRT2Data_1_2 = XGI330_CRT2Data_1_2 -> 0
pCRT2Data_4_D = XGI330_CRT2Data_4_D -> 0
pCRT2Data_4_E = XGI330_CRT2Data_4_E -> 0
pCRT2Data_4_10 = XGI330_CRT2Data_4_10 -> 0x80
pSR36 = XG27_SR36 -> 0x30
pCR8F = &XG27_CR8F -> 0x0C
pSR40 = XG27_SR40 -> 0x04
pSR41 = XG27_SR41 ->0x00
pSR31 = XGI330_SR31 -> 0xc0
pSR32 = XGI330_SR32 -> 0xc0
SR25 = XGI330_sr25 -> 0 (we only use XGI330_sr25[0])

== Constant fields with 'dead' code: ==
pSoftSetting is set to XGI330_SoftSetting = 0x30
-> if (*pVBInfo->pSoftSetting & SoftDRAMType) is never true since
SoftDRAMType = 0x80
-> if (*pVBInfo->pSoftSetting & ModeSoftSetting) is never true since
ModeSoftSetting = 0x04
--> remove the code, remove pSoftSetting, remove XGI330_SoftSetting

pDVOSetting is set to XG21_DVOSetting = 0
-> if (((*pVBInfo->pDVOSetting) & 0xC0) == 0xC0) is never true
--> remove the code, remove pDVOSetting, remove XG21_DVOSetting

pXGINew_DRAMTypeDefinition is set to &XG40_DRAMTypeDefinition 0xFF
-> if (*pVBInfo->pXGINew_DRAMTypeDefinition != 0x0C) is always true
--> remove the if and remove pXGINew_DRAMTypeDefinition
remove XG40_DRAMTypeDefinition

== Replace pointer to unsigned char with unsigned char variable
and assign value of referenced pointer: ==
pSR21 -> SR21, remove XGI330_SR21
pSR22 -> SR22, remove XGI330_SR22
pXGINew_CR97 -> XGINew_CR97, remove XG20_CR97, XG27_CR97 and Z11m_CR97

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 39 deletions

diff --git a/drivers/staging/xgifb/vb_struct.h b/drivers/staging/xgifb/vb_struct.h
index b54488b621e6..aea760ad4ae2 100644
--- a/drivers/staging/xgifb/vb_struct.h
+++ b/drivers/staging/xgifb/vb_struct.h
@@ -191,45 +191,11 @@ struct vb_device_info {
 	unsigned char (*SR15)[8];
 	unsigned char (*CR40)[8];
 
-	unsigned char  *pSoftSetting;
-	unsigned char  *pOutputSelect;
-
-	unsigned short *pRGBSenseData;
-	unsigned short *pRGBSenseData2; /*301b*/
-	unsigned short *pVideoSenseData;
-	unsigned short *pVideoSenseData2;
-	unsigned short *pYCSenseData;
-	unsigned short *pYCSenseData2;
-
-	unsigned char  *pSR07;
-	unsigned char  *CR49;
-	unsigned char  *pSR1F;
 	unsigned char  *AGPReg;
 	unsigned char  *SR16;
-	unsigned char  *pSR21;
-	unsigned char  *pSR22;
-	unsigned char  *pSR23;
-	unsigned char  *pSR24;
-	unsigned char  *SR25;
-	unsigned char  *pSR31;
-	unsigned char  *pSR32;
-	unsigned char  *pSR33;
-	unsigned char  *pSR36;      /* alan 12/07/2006 */
-	unsigned char  *pCRCF;
-	unsigned char  *pCRD0;      /* alan 12/07/2006 */
-	unsigned char  *pCRDE;      /* alan 12/07/2006 */
-	unsigned char  *pCR8F;      /* alan 12/07/2006 */
-	unsigned char  *pSR40;      /* alan 12/07/2006 */
-	unsigned char  *pSR41;      /* alan 12/07/2006 */
-	unsigned char  *pDVOSetting;
-	unsigned char  *pCR2E;
-	unsigned char  *pCR2F;
-	unsigned char  *pCR46;
-	unsigned char  *pCR47;
-	unsigned char  *pCRT2Data_1_2;
-	unsigned char  *pCRT2Data_4_D;
-	unsigned char  *pCRT2Data_4_E;
-	unsigned char  *pCRT2Data_4_10;
+	unsigned char  SR21;
+	unsigned char  SR22;
+	unsigned char  SR25;
 	struct SiS_MCLKData  *MCLKData;
 	struct XGI_ECLKDataStruct  *ECLKData;
 
@@ -249,8 +215,7 @@ struct vb_device_info {
 	unsigned char   *Ren750pGroup3;
 	unsigned char   *ScreenOffset;
 	unsigned char   *pXGINew_DRAMTypeDefinition;
-	unsigned char   *pXGINew_I2CDefinition ;
-	unsigned char   *pXGINew_CR97 ;
+	unsigned char   XGINew_CR97;
 
 	struct XGI330_LCDCapStruct  *LCDCapList;