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Date: Thu, 22 Jan 2015 21:01:39 +0530
From: Sudip Mukherjee <sudipm.mukherjee@...il.com>
To: Thomas Winischhofer <thomas@...ischhofer.net>,
Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
Tomi Valkeinen <tomi.valkeinen@...com>
Cc: linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] video: fbdev: sis: remove unused variables
removed some variables which were not used. Few calls to SiS_GetReg()
were left behind as they are reading from the hardare, removing them
might affect the overall functionality.
Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
This patch will generate checkpatch error, to fix that error we need
to change the style of init.c and init301.c
drivers/video/fbdev/sis/init.c | 33 +++++----------------------------
drivers/video/fbdev/sis/init301.c | 10 ++--------
drivers/video/fbdev/sis/sis_main.c | 9 ++++-----
3 files changed, 11 insertions(+), 41 deletions(-)
diff --git a/drivers/video/fbdev/sis/init.c b/drivers/video/fbdev/sis/init.c
index dfe3eb7..bfeb550 100644
--- a/drivers/video/fbdev/sis/init.c
+++ b/drivers/video/fbdev/sis/init.c
@@ -2649,7 +2649,7 @@ static void
SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex, unsigned short RRTI)
{
- unsigned short data, infoflag = 0, modeflag, resindex;
+ unsigned short data, infoflag = 0, modeflag;
#ifdef CONFIG_FB_SIS_315
unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
unsigned short data2, data3;
@@ -2660,7 +2660,6 @@ SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
if(SiS_Pr->UseCustomMode) {
infoflag = SiS_Pr->CInfoFlag;
} else {
- resindex = SiS_GetResInfo(SiS_Pr, ModeNo, ModeIdIndex);
if(ModeNo > 0x13) {
infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
}
@@ -3539,17 +3538,13 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
struct fb_var_screeninfo *var, bool writeres
)
{
- unsigned short HRE, HBE, HRS, HBS, HDE, HT;
- unsigned short VRE, VBE, VRS, VBS, VDE, VT;
- unsigned char sr_data, cr_data, cr_data2;
- int A, B, C, D, E, F, temp;
+ unsigned short HRE, HBE, HRS, HDE;
+ unsigned short VRE, VBE, VRS, VDE;
+ unsigned char sr_data, cr_data;
+ int B, C, D, E, F, temp;
sr_data = crdata[14];
- /* Horizontal total */
- HT = crdata[0] | ((unsigned short)(sr_data & 0x03) << 8);
- A = HT + 5;
-
/* Horizontal display enable end */
HDE = crdata[1] | ((unsigned short)(sr_data & 0x0C) << 6);
E = HDE + 1;
@@ -3558,9 +3553,6 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
HRS = crdata[4] | ((unsigned short)(sr_data & 0xC0) << 2);
F = HRS - E - 3;
- /* Horizontal blank start */
- HBS = crdata[2] | ((unsigned short)(sr_data & 0x30) << 4);
-
sr_data = crdata[15];
cr_data = crdata[5];
@@ -3589,13 +3581,6 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
sr_data = crdata[13];
cr_data = crdata[7];
- /* Vertical total */
- VT = crdata[6] |
- ((unsigned short)(cr_data & 0x01) << 8) |
- ((unsigned short)(cr_data & 0x20) << 4) |
- ((unsigned short)(sr_data & 0x01) << 10);
- A = VT + 2;
-
/* Vertical display enable end */
VDE = crdata[10] |
((unsigned short)(cr_data & 0x02) << 7) |
@@ -3610,14 +3595,6 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
((unsigned short)(sr_data & 0x08) << 7);
F = VRS + 1 - E;
- cr_data2 = (crdata[16] & 0x01) << 5;
-
- /* Vertical blank start */
- VBS = crdata[11] |
- ((unsigned short)(cr_data & 0x08) << 5) |
- ((unsigned short)(cr_data2 & 0x20) << 4) |
- ((unsigned short)(sr_data & 0x04) << 8);
-
/* Vertical blank end */
VBE = crdata[12] | ((unsigned short)(sr_data & 0x10) << 4);
temp = VBE - ((E - 1) & 511);
diff --git a/drivers/video/fbdev/sis/init301.c b/drivers/video/fbdev/sis/init301.c
index 295e0de..20f7234 100644
--- a/drivers/video/fbdev/sis/init301.c
+++ b/drivers/video/fbdev/sis/init301.c
@@ -2151,17 +2151,15 @@ SiS_GetVCLK2Ptr(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned shor
unsigned short RefreshRateTableIndex)
{
unsigned short CRT2Index, VCLKIndex = 0, VCLKIndexGEN = 0, VCLKIndexGENCRT = 0;
- unsigned short modeflag, resinfo, tempbx;
+ unsigned short resinfo, tempbx;
const unsigned char *CHTVVCLKPtr = NULL;
if(ModeNo <= 0x13) {
- modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
resinfo = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ResInfo;
CRT2Index = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_CRT2CRTC;
VCLKIndexGEN = (SiS_GetRegByte((SiS_Pr->SiS_P3ca+0x02)) >> 2) & 0x03;
VCLKIndexGENCRT = VCLKIndexGEN;
} else {
- modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
CRT2Index = SiS_Pr->SiS_RefIndex[RefreshRateTableIndex].Ext_CRT2CRTC;
VCLKIndexGEN = SiS_Pr->SiS_RefIndex[RefreshRateTableIndex].Ext_CRTVCLK;
@@ -7270,7 +7268,7 @@ SiS_ShiftXPos(struct SiS_Private *SiS_Pr, int shift)
static void
SiS_SetGroup4_C_ELV(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
{
- unsigned short temp, temp1, resinfo = 0;
+ unsigned short temp, temp1;
unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
if(!(SiS_Pr->SiS_VBType & VB_SIS30xCLV)) return;
@@ -7282,10 +7280,6 @@ SiS_SetGroup4_C_ELV(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned
if(!(ROMAddr[0x61] & 0x04)) return;
}
- if(ModeNo > 0x13) {
- resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
- }
-
SiS_SetRegOR(SiS_Pr->SiS_Part4Port,0x3a,0x08);
temp = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x3a);
if(!(temp & 0x01)) {
diff --git a/drivers/video/fbdev/sis/sis_main.c b/drivers/video/fbdev/sis/sis_main.c
index fcf610e..39e4dfd 100644
--- a/drivers/video/fbdev/sis/sis_main.c
+++ b/drivers/video/fbdev/sis/sis_main.c
@@ -4991,7 +4991,6 @@ static void sisfb_post_xgi_ddr2(struct sis_video_info *ivideo, u8 regb)
static const u8 cs168[8] = {
0x48, 0x78, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00
};
- u8 reg;
u8 v1;
u8 v2;
u8 v3;
@@ -4999,9 +4998,9 @@ static void sisfb_post_xgi_ddr2(struct sis_video_info *ivideo, u8 regb)
SiS_SetReg(SISCR, 0xb0, 0x80); /* DDR2 dual frequency mode */
SiS_SetReg(SISCR, 0x82, 0x77);
SiS_SetReg(SISCR, 0x86, 0x00);
- reg = SiS_GetReg(SISCR, 0x86);
+ SiS_GetReg(SISCR, 0x86);
SiS_SetReg(SISCR, 0x86, 0x88);
- reg = SiS_GetReg(SISCR, 0x86);
+ SiS_GetReg(SISCR, 0x86);
v1 = cs168[regb]; v2 = cs160[regb]; v3 = cs158[regb];
if (ivideo->haveXGIROM) {
v1 = bios[regb + 0x168];
@@ -5011,9 +5010,9 @@ static void sisfb_post_xgi_ddr2(struct sis_video_info *ivideo, u8 regb)
SiS_SetReg(SISCR, 0x86, v1);
SiS_SetReg(SISCR, 0x82, 0x77);
SiS_SetReg(SISCR, 0x85, 0x00);
- reg = SiS_GetReg(SISCR, 0x85);
+ SiS_GetReg(SISCR, 0x85);
SiS_SetReg(SISCR, 0x85, 0x88);
- reg = SiS_GetReg(SISCR, 0x85);
+ SiS_GetReg(SISCR, 0x85);
SiS_SetReg(SISCR, 0x85, v2);
SiS_SetReg(SISCR, 0x82, v3);
SiS_SetReg(SISCR, 0x98, 0x01);
--
1.8.1.2
--
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