[PATCH] pm2fb: Manual configuration of timings for Elsa Winner 2000 Office

Attached is a small patch which configures the correct memory clock and
timings on the Elsa Winner 2000 Office pm2 based card.  This is necessary when
the card is used on a platform which does not support PC style BIOS
initialization.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index f4188fe6dd9a..0277ce031e5e 100644
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -1120,6 +1120,22 @@ static int __devinit pm2fb_probe(struct pci_dev *pdev,
                 default_par->mem_control, default_par->boot_address,
                 default_par->mem_config);
 
+        if(default_par->mem_control == 0 &&
+                default_par->boot_address == 0x31 &&
+                default_par->mem_config == 0x259fffff &&
+                pdev->subsystem_vendor == 0x1048 &&
+                pdev->subsystem_device == 0x0a31) {
+                DPRINTK("subsystem_vendor: %04x, subsystem_device: %04x\n",
+                        pdev->subsystem_vendor, pdev->subsystem_device);
+                DPRINTK("We have not been initialized by VGA BIOS "
+                        "and are running on an Elsa Winner 2000 Office\n");
+                DPRINTK("Initializing card timings manually...\n");
+                default_par->mem_control=0;
+                default_par->boot_address=0x20;
+                default_par->mem_config=0xe6002021;
+                default_par->memclock=100000;
+        }
+
         /* Now work out how big lfb is going to be. */
         switch(default_par->mem_config & PM2F_MEM_CONFIG_RAM_MASK) {
         case PM2F_MEM_BANKS_1: