s3fb: fix Virge/GX2

Fix Virge/GX2 support in s3fb:
- fix IDs: 86C357 is GX2, 86C359 is GX2+, 86C356 probably does not exist
- add memory size detection
- drive it the same way as Trio3D/2X

The original IDs most likely came from S3 website which claims that:
- 356 is Virge/GX2 with ID=8A10, driver included in Windows 2K, XP
- 357 is Virge/GX2+ with ID=8A11, driver included in Windows ME
- 359 is Virge/GX2+ with ID=8A12, driver included in Windows ME
but:
- google search for 86C356 only reveals references to Trio3D (probably
because of a typo - Trio3D is 86C365)
- my card is clearly marked as 86C357, Virge/GX2 and has ID=8A10
- there is no driver for IDs 8A11 and 8A12 in Windows ME
- there is a driver for ID 8A10 in Windows ME that says it's GX2 (357)

Tested with #9 Reality 334 (86C357 Virge/GX2, ID=0x8A10).

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 34 insertions, 14 deletions

diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c
index ddedad9cd069..c4482f2e5799 100644
--- a/drivers/video/s3fb.c
+++ b/drivers/video/s3fb.c
@@ -71,9 +71,9 @@ static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
 
 static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64", "S3 Trio64V+",
                         "S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX",
-                        "S3 Plato/PX", "S3 Aurora64VP", "S3 Virge",
+                        "S3 Plato/PX", "S3 Aurora64V+", "S3 Virge",
                         "S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
-                        "S3 Virge/GX2", "S3 Virge/GX2P", "S3 Virge/GX2P",
+                        "S3 Virge/GX2", "S3 Virge/GX2+", "",
                         "S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X",
                         "S3 Trio3D"};
 
@@ -90,9 +90,8 @@ static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64",
 #define CHIP_988_VIRGE_VX       0x0A
 #define CHIP_375_VIRGE_DX       0x0B
 #define CHIP_385_VIRGE_GX       0x0C
-#define CHIP_356_VIRGE_GX2      0x0D
-#define CHIP_357_VIRGE_GX2P     0x0E
-#define CHIP_359_VIRGE_GX2P     0x0F
+#define CHIP_357_VIRGE_GX2      0x0D
+#define CHIP_359_VIRGE_GX2P     0x0E
 #define CHIP_360_TRIO3D_1X      0x10
 #define CHIP_362_TRIO3D_2X      0x11
 #define CHIP_368_TRIO3D_2X      0x12
@@ -359,7 +358,9 @@ static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
         vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
 
         /* Set S3 clock registers */
-        if (par->chip == CHIP_360_TRIO3D_1X ||
+        if (par->chip == CHIP_357_VIRGE_GX2 ||
+            par->chip == CHIP_359_VIRGE_GX2P ||
+            par->chip == CHIP_360_TRIO3D_1X ||
             par->chip == CHIP_362_TRIO3D_2X ||
             par->chip == CHIP_368_TRIO3D_2X) {
                 vga_wseq(par->state.vgabase, 0x12, (n - 2) | ((r & 3) << 6));   /* n and two bits of r */
@@ -560,7 +561,9 @@ static int s3fb_set_par(struct fb_info *info)
         pr_debug("fb%d: offset register       : %d\n", info->node, offset_value);
         svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value);
 
-        if (par->chip != CHIP_360_TRIO3D_1X &&
+        if (par->chip != CHIP_357_VIRGE_GX2 &&
+            par->chip != CHIP_359_VIRGE_GX2P &&
+            par->chip != CHIP_360_TRIO3D_1X &&
             par->chip != CHIP_362_TRIO3D_2X &&
             par->chip != CHIP_368_TRIO3D_2X) {
                 vga_wcrt(par->state.vgabase, 0x54, 0x18); /* M parameter */
@@ -604,7 +607,9 @@ static int s3fb_set_par(struct fb_info *info)
                 vga_wcrt(par->state.vgabase, 0x66, 0x90);
         }
 
-        if (par->chip == CHIP_360_TRIO3D_1X ||
+        if (par->chip == CHIP_357_VIRGE_GX2 ||
+            par->chip == CHIP_359_VIRGE_GX2P ||
+            par->chip == CHIP_360_TRIO3D_1X ||
             par->chip == CHIP_362_TRIO3D_2X ||
             par->chip == CHIP_368_TRIO3D_2X ||
             par->chip == CHIP_365_TRIO3D    ||
@@ -617,8 +622,7 @@ static int s3fb_set_par(struct fb_info *info)
                 vga_wcrt(par->state.vgabase, 0x66, 0x81);
         }
 
-        if (par->chip == CHIP_356_VIRGE_GX2  ||
-            par->chip == CHIP_357_VIRGE_GX2P ||
+        if (par->chip == CHIP_357_VIRGE_GX2  ||
             par->chip == CHIP_359_VIRGE_GX2P ||
             par->chip == CHIP_360_TRIO3D_1X ||
             par->chip == CHIP_362_TRIO3D_2X ||
@@ -674,6 +678,8 @@ static int s3fb_set_par(struct fb_info *info)
                 pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
                 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
                 if (info->var.pixclock > 20000 ||
+                    par->chip == CHIP_357_VIRGE_GX2 ||
+                    par->chip == CHIP_359_VIRGE_GX2P ||
                     par->chip == CHIP_360_TRIO3D_1X ||
                     par->chip == CHIP_362_TRIO3D_2X ||
                     par->chip == CHIP_368_TRIO3D_2X)
@@ -702,7 +708,9 @@ static int s3fb_set_par(struct fb_info *info)
                 } else {
                         svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
                         svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
-                        if (par->chip != CHIP_360_TRIO3D_1X &&
+                        if (par->chip != CHIP_357_VIRGE_GX2 &&
+                            par->chip != CHIP_359_VIRGE_GX2P &&
+                            par->chip != CHIP_360_TRIO3D_1X &&
                             par->chip != CHIP_362_TRIO3D_2X &&
                             par->chip != CHIP_368_TRIO3D_2X)
                                 hmul = 2;
@@ -727,7 +735,9 @@ static int s3fb_set_par(struct fb_info *info)
                 } else {
                         svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
                         svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
-                        if (par->chip != CHIP_360_TRIO3D_1X &&
+                        if (par->chip != CHIP_357_VIRGE_GX2 &&
+                            par->chip != CHIP_359_VIRGE_GX2P &&
+                            par->chip != CHIP_360_TRIO3D_1X &&
                             par->chip != CHIP_362_TRIO3D_2X &&
                             par->chip != CHIP_368_TRIO3D_2X)
                                 hmul = 2;
@@ -1069,6 +1079,16 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
                         info->screen_size = 2 << 20;
                         break;
                 }
+        } else if (par->chip == CHIP_357_VIRGE_GX2 ||
+                   par->chip == CHIP_359_VIRGE_GX2P) {
+                switch ((regval & 0xC0) >> 6) {
+                case 1: /* 4MB */
+                        info->screen_size = 4 << 20;
+                        break;
+                case 3: /* 2MB */
+                        info->screen_size = 2 << 20;
+                        break;
+                }
         } else
                 info->screen_size = s3_memsizes[regval >> 5] << 10;
         info->fix.smem_len = info->screen_size;
@@ -1268,8 +1288,8 @@ static struct pci_device_id s3_devices[] __devinitdata = {
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x5631), .driver_data = CHIP_325_VIRGE},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x883D), .driver_data = CHIP_988_VIRGE_VX},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX},
-        {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_356_VIRGE_GX2},
-        {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_357_VIRGE_GX2P},
+        {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_357_VIRGE_GX2},
+        {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_359_VIRGE_GX2P},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8904), .driver_data = CHIP_365_TRIO3D},