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drm/nvd0/disp: scaling

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-07-07 16:01:57 +10:00
parent a46232ee09
commit f3fdc52dd7
1 changed files with 32 additions and 5 deletions
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37
drivers/gpu/drm/nouveau/nvd0_display.c
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@ -150,16 +150,43 @@ nvd0_crtc_set_scale(struct nouveau_crtc *nv_crtc, int type, bool update)
{
struct drm_display_mode *mode = &nv_crtc->base.mode;
struct drm_device *dev = nv_crtc->base.dev;
u32 *push;
struct nouveau_connector *nv_connector;
u32 *push, outX, outY;
/*XXX: actually handle scaling */
outX = mode->hdisplay;
outY = mode->vdisplay;
nv_connector = nouveau_crtc_connector_get(nv_crtc);
if (nv_connector && nv_connector->native_mode) {
struct drm_display_mode *native = nv_connector->native_mode;
u32 xratio = (native->hdisplay << 19) / mode->hdisplay;
u32 yratio = (native->vdisplay << 19) / mode->vdisplay;
switch (type) {
case DRM_MODE_SCALE_ASPECT:
if (xratio > yratio) {
outX = (mode->hdisplay * yratio) >> 19;
outY = (mode->vdisplay * yratio) >> 19;
} else {
outX = (mode->hdisplay * xratio) >> 19;
outY = (mode->vdisplay * xratio) >> 19;
}
break;
case DRM_MODE_SCALE_FULLSCREEN:
outX = native->hdisplay;
outY = native->vdisplay;
break;
default:
break;
}
}
push = evo_wait(dev, 0, 16);
if (push) {
evo_mthd(push, 0x04c0 + (nv_crtc->index * 0x300), 3);
evo_data(push, (mode->vdisplay << 16) | mode->hdisplay);
evo_data(push, (mode->vdisplay << 16) | mode->hdisplay);
evo_data(push, (mode->vdisplay << 16) | mode->hdisplay);
evo_data(push, (outY << 16) | outX);
evo_data(push, (outY << 16) | outX);
evo_data(push, (outY << 16) | outX);
evo_mthd(push, 0x0494 + (nv_crtc->index * 0x300), 1);
evo_data(push, 0x00000000);
evo_mthd(push, 0x04b0 + (nv_crtc->index * 0x300), 1);