[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>
diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index f4188fe..0277ce0 100644
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -1120,6 +1120,22 @@
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:
