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grub_video_get_edid is not usable from grub_vbe_get_preferred_mode, as a

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video adapter has not necessarily yet been set.  Use grub_video_vbe_get_edid
and grub_video_edid_checksum directly instead.  Remove grub_video_get_edid
as it now has no users.
Reported by: Marjo Mercado.
This commit is contained in:
Colin Watson 2011-01-17 12:07:47 +00:00
parent cb918eddf4
commit 9b300caf84
4 changed files with 21 additions and 41 deletions
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4
ChangeLog.vbe-autodetect
View file

@ -1,9 +1,8 @@
2011-01-15 Colin Watson <cjwatson@ubuntu.com>
2011-01-17 Colin Watson <cjwatson@ubuntu.com>
Preferred resolution detection for VBE.
* grub-core/video/video.c (grub_video_edid_checksum): New function.
(grub_video_get_edid): Likewise.
(grub_video_edid_preferred_mode): Likewise. Try EDID followed by
the Flat Panel extension, in line with the X.org VESA driver.
* grub-core/video/i386/pc/vbe.c (grub_vbe_bios_get_flat_panel_info):
@ -21,7 +20,6 @@
* include/grub/video.h (struct grub_vbe_edid_info): New structure.
(struct grub_video_adapter): Add get_edid.
(grub_video_edid_checksum): Add prototype.
(grub_video_get_edid): Likewise.
(grub_video_edid_preferred_mode): Likewise.
* include/grub/i386/pc/vbe.h (struct grub_vbe_flat_panel_info): New
structure.

39
grub-core/video/i386/pc/vbe.c
View file

@ -377,6 +377,24 @@ grub_vbe_probe (struct grub_vbe_info_block *info_block)
return GRUB_ERR_NONE;
}
static grub_err_t
grub_video_vbe_get_edid (struct grub_video_edid_info *edid_info)
{
struct grub_video_edid_info *edid_info_lowmem;
/* Use low memory scratch area as temporary storage for VESA BIOS calls. */
edid_info_lowmem =
(struct grub_video_edid_info *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
grub_memset (edid_info_lowmem, 0, sizeof (*edid_info_lowmem));
if (grub_vbe_bios_read_edid (edid_info_lowmem) != GRUB_VBE_STATUS_OK)
return grub_error (GRUB_ERR_BAD_DEVICE, "EDID information not available");
grub_memcpy (edid_info, edid_info_lowmem, sizeof (*edid_info));
return GRUB_ERR_NONE;
}
static grub_err_t
grub_vbe_get_preferred_mode (unsigned int *width, unsigned int *height)
{
@ -394,7 +412,8 @@ grub_vbe_get_preferred_mode (unsigned int *width, unsigned int *height)
&& (grub_vbe_bios_get_ddc_capabilities (&ddc_level) & 0xff)
== GRUB_VBE_STATUS_OK)
{
if (grub_video_get_edid (&edid_info) == GRUB_ERR_NONE
if (grub_video_vbe_get_edid (&edid_info) == GRUB_ERR_NONE
&& grub_video_edid_checksum (&edid_info) == GRUB_ERR_NONE
&& grub_video_edid_preferred_mode (&edid_info, width, height)
== GRUB_ERR_NONE)
return GRUB_ERR_NONE;
@ -969,24 +988,6 @@ grub_video_vbe_get_info_and_fini (struct grub_video_mode_info *mode_info,
return grub_video_fb_get_info_and_fini (mode_info, framebuf);
}
static grub_err_t
grub_video_vbe_get_edid (struct grub_video_edid_info *edid_info)
{
struct grub_video_edid_info *edid_info_lowmem;
/* Use low memory scratch area as temporary storage for VESA BIOS calls. */
edid_info_lowmem =
(struct grub_video_edid_info *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
grub_memset (edid_info_lowmem, 0, sizeof (*edid_info_lowmem));
if (grub_vbe_bios_read_edid (edid_info_lowmem) != GRUB_VBE_STATUS_OK)
return grub_error (GRUB_ERR_BAD_DEVICE, "EDID information not available");
grub_memcpy (edid_info, edid_info_lowmem, sizeof (*edid_info));
return GRUB_ERR_NONE;
}
static void
grub_video_vbe_print_adapter_specific_info (void)
{

18
grub-core/video/video.c
View file

@ -393,24 +393,6 @@ grub_video_edid_checksum (struct grub_video_edid_info *edid_info)
return grub_errno;
}
grub_err_t
grub_video_get_edid (struct grub_video_edid_info *edid_info)
{
if (! grub_video_adapter_active)
return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated");
if (! grub_video_adapter_active->get_edid)
return grub_error (GRUB_ERR_BAD_DEVICE,
"EDID information unavailable for this video mode");
if (grub_video_adapter_active->get_edid (edid_info) != GRUB_ERR_NONE)
return grub_errno;
if (grub_video_edid_checksum (edid_info) != GRUB_ERR_NONE)
return grub_errno;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_edid_preferred_mode (struct grub_video_edid_info *edid_info,
unsigned int *width, unsigned int *height)

1
include/grub/video.h
View file

@ -486,7 +486,6 @@ grub_err_t EXPORT_FUNC (grub_video_set_active_render_target) (struct grub_video_
grub_err_t grub_video_get_active_render_target (struct grub_video_render_target **target);
grub_err_t grub_video_edid_checksum (struct grub_video_edid_info *edid_info);
grub_err_t grub_video_get_edid (struct grub_video_edid_info *edid_info);
grub_err_t grub_video_edid_preferred_mode (struct grub_video_edid_info *edid_info,
unsigned int *width,
unsigned int *height);