leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/radeon/kms: ATPX switcheroo fixes

Browse Source 
When we switch the display mux, also switch
the i2c mux.  Also use the start and finish
methods to let the sbios know that the switch
is happening.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=35398

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-05-06 01:42:49 -04:00 committed by Dave Airlie
parent 8aeb96f802
commit 58e73811c8
1 changed files with 27 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/gpu/drm/radeon/radeon_atpx_handler.c
View File

@ -15,6 +15,9 @@
#define ATPX_VERSION 0
#define ATPX_GPU_PWR 2
#define ATPX_MUX_SELECT 3
#define ATPX_I2C_MUX_SELECT 4
#define ATPX_SWITCH_START 5
#define ATPX_SWITCH_END 6
#define ATPX_INTEGRATED 0
#define ATPX_DISCRETE 1
@ -149,13 +152,35 @@ static int radeon_atpx_switch_mux(acpi_handle handle, int mux_id)
return radeon_atpx_execute(handle, ATPX_MUX_SELECT, mux_id);
}
static int radeon_atpx_switch_i2c_mux(acpi_handle handle, int mux_id)
{
return radeon_atpx_execute(handle, ATPX_I2C_MUX_SELECT, mux_id);
}
static int radeon_atpx_switch_start(acpi_handle handle, int gpu_id)
{
return radeon_atpx_execute(handle, ATPX_SWITCH_START, gpu_id);
}
static int radeon_atpx_switch_end(acpi_handle handle, int gpu_id)
{
return radeon_atpx_execute(handle, ATPX_SWITCH_END, gpu_id);
}
static int radeon_atpx_switchto(enum vga_switcheroo_client_id id)
{
int gpu_id;
if (id == VGA_SWITCHEROO_IGD)
radeon_atpx_switch_mux(radeon_atpx_priv.atpx_handle, 0);
gpu_id = ATPX_INTEGRATED;
else
radeon_atpx_switch_mux(radeon_atpx_priv.atpx_handle, 1);
gpu_id = ATPX_DISCRETE;
radeon_atpx_switch_start(radeon_atpx_priv.atpx_handle, gpu_id);
radeon_atpx_switch_mux(radeon_atpx_priv.atpx_handle, gpu_id);
radeon_atpx_switch_i2c_mux(radeon_atpx_priv.atpx_handle, gpu_id);
radeon_atpx_switch_end(radeon_atpx_priv.atpx_handle, gpu_id);
return 0;
}