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| author | Jason Wessel <jason.wessel@windriver.com> | 2010-09-26 06:47:26 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-10-06 11:50:37 +1000 |
| commit | ff773714dd30b802c336064109c535d8b2774e2f (patch) | |
| tree | d040dbf8cff59f984dc1d1773c804e52d4c49010 /drivers/gpu/drm/radeon/radeon_display.c | |
| parent | 413d45d3627be4748058dea697718ed6fb88bd01 (diff) | |
| download | kernel_samsung_smdk4412-ff773714dd30b802c336064109c535d8b2774e2f.zip kernel_samsung_smdk4412-ff773714dd30b802c336064109c535d8b2774e2f.tar.gz kernel_samsung_smdk4412-ff773714dd30b802c336064109c535d8b2774e2f.tar.bz2 | |
radeon, kdb, kms: Save and restore the LUT on atomic KMS enter/exit
When changing VTs non-atomically the kernel works in conjunction with
the Xserver in user space and receives the LUT information from the
Xserver via a system call. When changing modes atomically for kdb,
this information must be saved and restored without disturbing user
space as if nothing ever happened.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
CC: Jesse Barnes <jbarnes@virtuousgeek.org>
CC: David Airlie <airlied@linux.ie>
CC: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_display.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_display.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index b92d2f2..26935cf 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -138,6 +138,38 @@ void radeon_crtc_load_lut(struct drm_crtc *crtc) legacy_crtc_load_lut(crtc); } +void radeon_crtc_save_lut(struct drm_crtc *crtc) +{ + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + int i; + + if (!crtc->enabled) + return; + + for (i = 0; i < 256; i++) { + radeon_crtc->lut_r_copy[i] = radeon_crtc->lut_r[i]; + radeon_crtc->lut_g_copy[i] = radeon_crtc->lut_g[i]; + radeon_crtc->lut_b_copy[i] = radeon_crtc->lut_b[i]; + } +} + +void radeon_crtc_restore_lut(struct drm_crtc *crtc) +{ + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + int i; + + if (!crtc->enabled) + return; + + for (i = 0; i < 256; i++) { + radeon_crtc->lut_r[i] = radeon_crtc->lut_r_copy[i]; + radeon_crtc->lut_g[i] = radeon_crtc->lut_g_copy[i]; + radeon_crtc->lut_b[i] = radeon_crtc->lut_b_copy[i]; + } + + radeon_crtc_load_lut(crtc); +} + /** Sets the color ramps on behalf of fbcon */ void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, u16 blue, int regno) |