stifb: detect cards in double buffer mode more reliably
PATCH 29/33 stifb: detect cards in double buffer mode more reliably
From: Helge Deller <[email protected]>
Visualize-EG, Graffiti and A4450A graphics cards on PARISC can be configured in double-buffer and standard mode, but the stifb driver supports standard mode only.
This patch detects double-buffered cards more reliable.
Signed-off-by Helge Deller <[email protected]>
Signed-off-by Antonino Daplas <[email protected]>
---
drivers/video/stifb.c | 19 ++++++++++++------- 1 files changed, 12 insertions(+), 7 deletions(-)
drivers/video/stifb.c +12 -7
@@ -1100,13 +1100,18 @@ stifb_init_fb(struct sti_struct *sti, in/* only supported cards are allowed */ switch (fb->id) {case CRT_ID_VISUALIZE_EG : -/* look for a double buffering device like e.g. the -"INTERNAL_EG_DX1024" in the RDI precisionbook laptop -which won't work. The same device in non-double -buffering mode returns "INTERNAL_EG_X1024". */ -if (strstr (sti->outptr.dev_name,"EG_DX" )) { -printk (KERN_WARNING -"stifb: ignoring '%s'. Disable double buffering in IPL menu.\n" , +/* Visualize cards can run either in "double buffer" or +"standard" mode. Depending on the mode, the card reports +a different device name, e.g. "INTERNAL_EG_DX1024" in double +buffer mode and "INTERNAL_EG_X1024" in standard mode. +Since this driver only supports standard mode, we check +if the device name contains the string "DX" and tell the +user how to reconfigure the card. */ +if (strstr (sti->outptr.dev_name,"DX" )) { +printk (KERN_WARNING "WARNING: stifb framebuffer driver does not " +"support '%s' in double-buffer mode.\n" +KERN_WARNING "WARNING: Please disable the double-buffer mode " +"in IPL menu (the PARISC-BIOS).\n" , sti->outptr.dev_name); goto out_err0; }
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