diff options
| author | Chris Ruffin <chris.ruffin@intel.com> | 2015-03-24 21:57:42 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2015-04-01 00:28:15 +0200 |
| commit | 564b687b031ccc647943f946b93037cf0780612a (patch) | |
| tree | 42ddfce8073395d3ee85ea7deb6e56314dfdf85e /drivers/gpu/drm/bochs | |
| parent | Merge tag 'topic/drm-misc-2015-03-31' of git://anongit.freedesktop.org/drm-in... (diff) | |
| download | linux-564b687b031ccc647943f946b93037cf0780612a.tar.xz linux-564b687b031ccc647943f946b93037cf0780612a.zip | |
drm/bochs: disable video before changing video mode
qemu and simics simulators both seem to expect that video should be disabled
before changing the video mode.
references:
http://git.qemu.org/?p=qemu.git;a=blob;f=hw/display/vga.c;h=c0f7b343bbab586c8593d29c7a765f1e6ca3662c;hb=HEAD#l727
http://wiki.osdev.org/Bochs_VBE_Extensions#Setting_display_resolution_and_bit_depth
Signed-off-by: Chris Ruffin <chris.ruffin@intel.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/bochs')
| -rw-r--r-- | drivers/gpu/drm/bochs/bochs_hw.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c index 460389702d31..a39b0343c197 100644 --- a/drivers/gpu/drm/bochs/bochs_hw.c +++ b/drivers/gpu/drm/bochs/bochs_hw.c @@ -164,6 +164,7 @@ void bochs_hw_setmode(struct bochs_device *bochs, bochs_vga_writeb(bochs, 0x3c0, 0x20); /* unblank */ + bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); |