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[PATCH] matroxfb: Use CACHEFLUSH on all chips 

Use the CACHEFLUSH register on all chip types.  The register is listed in all
other specs except 2064W.  However I have verified that the register does work
on a 2064W despite being marked reserved in the specs.  There were no
noticeable side effects after writing to the register.

Signed-off-by: Ville Syrjl <syrjala@sci.fi>
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ville Syrjl 2005-11-07 01:00:58 -08:00 committed by Linus Torvalds
parent 63921fbfbd
commit 6c12f30554
3 changed files with 2 additions and 14 deletions
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2
drivers/video/matrox/matroxfb_DAC1064.c
View File

@ -657,7 +657,6 @@ static int MGA1064_preinit(WPMINFO2) {
/* ACCESS_FBINFO(capable.cfb4) = 0; ... preinitialized by 0 */
ACCESS_FBINFO(capable.text) = 1;
ACCESS_FBINFO(capable.vxres) = vxres_mystique;
ACCESS_FBINFO(features.accel.has_cacheflush) = 1;
ACCESS_FBINFO(outputs[0]).output = &m1064;
ACCESS_FBINFO(outputs[0]).src = ACCESS_FBINFO(outputs[0]).default_src;
@ -842,7 +841,6 @@ static int MGAG100_preinit(WPMINFO2) {
/* ACCESS_FBINFO(capable.cfb4) = 0; ... preinitialized by 0 */
ACCESS_FBINFO(capable.text) = 1;
ACCESS_FBINFO(capable.vxres) = vxres_g100;
ACCESS_FBINFO(features.accel.has_cacheflush) = 1;
ACCESS_FBINFO(capable.plnwt) = ACCESS_FBINFO(devflags.accelerator) == FB_ACCEL_MATROX_MGAG100
? ACCESS_FBINFO(devflags.sgram) : 1;

9
drivers/video/matrox/matroxfb_base.c
View File

@ -1283,7 +1283,7 @@ static int matroxfb_getmemory(WPMINFO unsigned int maxSize, unsigned int *realSi
vaddr_t vm;
unsigned int offs;
unsigned int offs2;
unsigned char store, orig;
unsigned char orig;
unsigned char bytes[32];
unsigned char* tmp;
@ -1299,16 +1299,12 @@ static int matroxfb_getmemory(WPMINFO unsigned int maxSize, unsigned int *realSi
orig = mga_inb(M_EXTVGA_DATA);
mga_outb(M_EXTVGA_DATA, orig | 0x80);
store = mga_readb(vm, 0x1234);
tmp = bytes;
for (offs = 0x100000; offs < maxSize; offs += 0x200000)
*tmp++ = mga_readb(vm, offs);
for (offs = 0x100000; offs < maxSize; offs += 0x200000)
mga_writeb(vm, offs, 0x02);
if (ACCESS_FBINFO(features.accel.has_cacheflush))
mga_outb(M_CACHEFLUSH, 0x00);
else
mga_writeb(vm, 0x1234, 0x99);
mga_outb(M_CACHEFLUSH, 0x00);
for (offs = 0x100000; offs < maxSize; offs += 0x200000) {
if (mga_readb(vm, offs) != 0x02)
break;
@ -1319,7 +1315,6 @@ static int matroxfb_getmemory(WPMINFO unsigned int maxSize, unsigned int *realSi
tmp = bytes;
for (offs2 = 0x100000; offs2 < maxSize; offs2 += 0x200000)
mga_writeb(vm, offs2, *tmp++);
mga_writeb(vm, 0x1234, store);
mga_outb(M_EXTVGA_INDEX, 0x03);
mga_outb(M_EXTVGA_DATA, orig);

5
drivers/video/matrox/matroxfb_base.h
View File

@ -272,10 +272,6 @@ struct matrox_DAC1064_features {
u_int8_t xmiscctrl;
};
struct matrox_accel_features {
int has_cacheflush;
};
/* current hardware status */
struct mavenregs {
u_int8_t regs[256];
@ -440,7 +436,6 @@ struct matrox_fb_info {
struct {
struct matrox_pll_features pll;
struct matrox_DAC1064_features DAC1064;
struct matrox_accel_features accel;
} features;
struct {
spinlock_t DAC;