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2009-08-17 Michal Suchanek <hramrach@centrum.cz>

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VBE cleanup.

	* video/i386/pc/vbe.c (vbe_mode_in_use): Removed (duplicate).
	(grub_vbe_set_video_mode): Save active mode info
	only after setting the mode.
	(grub_video_vbe_setup): Call 'grub_vbe_set_video_mode' with NULL as
	second argument.
This commit is contained in:
phcoder 2009-08-17 13:44:07 +00:00
parent 2f467aa9ad
commit 19f1b335c3
2 changed files with 24 additions and 16 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2009-08-17 Michal Suchanek <hramrach@centrum.cz>
VBE cleanup.
* video/i386/pc/vbe.c (vbe_mode_in_use): Removed (duplicate).
(grub_vbe_set_video_mode): Save active mode info
only after setting the mode.
(grub_video_vbe_setup): Call 'grub_vbe_set_video_mode' with NULL as
second argument.
2009-08-17 Michal Suchanek <hramrach@centrum.cz>
Rename variables for clarity.

30
video/i386/pc/vbe.c
View file

@ -46,7 +46,6 @@ static struct
} framebuffer;
static grub_uint32_t initial_vbe_mode;
static grub_uint32_t vbe_mode_in_use = 0x55aa;
static grub_uint16_t *vbe_mode_list;
static void *
@ -111,10 +110,11 @@ grub_vbe_probe (struct grub_vbe_info_block *info_block)
grub_err_t
grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
struct grub_vbe_mode_info_block *vbe_mode_info)
struct grub_vbe_mode_info_block *vbe_mode_info)
{
grub_vbe_status_t status;
grub_uint32_t old_vbe_mode;
struct grub_vbe_mode_info_block new_vbe_mode_info;
grub_err_t err;
/* Make sure that VBE is supported. */
@ -123,7 +123,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
return grub_errno;
/* Try to get mode info. */
grub_vbe_get_video_mode_info (vbe_mode, &active_vbe_mode_info);
grub_vbe_get_video_mode_info (vbe_mode, &new_vbe_mode_info);
if (grub_errno != GRUB_ERR_NONE)
return grub_errno;
@ -134,7 +134,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
vbe_mode |= 1 << 14;
/* Determine frame buffer pixel format. */
switch (active_vbe_mode_info.memory_model)
switch (new_vbe_mode_info.memory_model)
{
case GRUB_VBE_MEMORY_MODEL_PACKED_PIXEL:
framebuffer.index_color_mode = 1;
@ -147,7 +147,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
default:
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"unsupported pixel format 0x%x",
active_vbe_mode_info.memory_model);
new_vbe_mode_info.memory_model);
}
}
@ -163,6 +163,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
/* Save information for later usage. */
framebuffer.active_vbe_mode = vbe_mode;
grub_memcpy (&active_vbe_mode_info, &new_vbe_mode_info, sizeof (active_vbe_mode_info));
if (vbe_mode < 0x100)
{
@ -172,16 +173,16 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
}
else
{
framebuffer.ptr = (grub_uint8_t *) active_vbe_mode_info.phys_base_addr;
framebuffer.ptr = (grub_uint8_t *) new_vbe_mode_info.phys_base_addr;
if (controller_info.version >= 0x300)
framebuffer.bytes_per_scan_line = active_vbe_mode_info.lin_bytes_per_scan_line;
framebuffer.bytes_per_scan_line = new_vbe_mode_info.lin_bytes_per_scan_line;
else
framebuffer.bytes_per_scan_line = active_vbe_mode_info.bytes_per_scan_line;
framebuffer.bytes_per_scan_line = new_vbe_mode_info.bytes_per_scan_line;
}
/* Check whether mode is text mode or graphics mode. */
if (active_vbe_mode_info.memory_model == GRUB_VBE_MEMORY_MODEL_TEXT)
if (new_vbe_mode_info.memory_model == GRUB_VBE_MEMORY_MODEL_TEXT)
{
/* Text mode. */
@ -193,7 +194,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
/* Graphics mode. */
/* Calculate bytes_per_pixel value. */
switch(active_vbe_mode_info.bits_per_pixel)
switch(new_vbe_mode_info.bits_per_pixel)
{
case 32: framebuffer.bytes_per_pixel = 4; break;
case 24: framebuffer.bytes_per_pixel = 3; break;
@ -238,7 +239,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
/* Copy mode info for caller. */
if (vbe_mode_info)
grub_memcpy (vbe_mode_info, &active_vbe_mode_info, sizeof (*vbe_mode_info));
grub_memcpy (vbe_mode_info, &new_vbe_mode_info, sizeof (*vbe_mode_info));
return GRUB_ERR_NONE;
}
@ -468,14 +469,11 @@ grub_video_vbe_setup (unsigned int width, unsigned int height,
grub_err_t err;
/* If this fails, then we have mode selection heuristics problem,
or adapter failure. */
grub_vbe_set_video_mode (best_vbe_mode, &active_vbe_mode_info);
/* grub_vbe_set_video_mode already sets active_vbe_mode_info. */
grub_vbe_set_video_mode (best_vbe_mode, NULL);
if (grub_errno != GRUB_ERR_NONE)
return grub_errno;
/* Now we are happily in requested video mode. Cache some info
in order to fasten later operations. */
vbe_mode_in_use = best_vbe_mode;
/* Fill mode info details. */
framebuffer.mode_info.width = active_vbe_mode_info.x_resolution;
framebuffer.mode_info.height = active_vbe_mode_info.y_resolution;