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drm/vmwgfx: Support older hardware.

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V2: Fix a couple of typos.

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jakob Bornecrantz
2010-05-28 11:21:59 +02:00
committed by Dave Airlie
parent 1ae1ddd5e9
commit d7e1958dbe
6 changed files with 148 additions and 107 deletions
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70
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
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@@ -38,6 +38,7 @@ struct vmw_legacy_display {
struct list_head active;
unsigned num_active;
unsigned last_num_active;
struct vmw_framebuffer *fb;
};
@@ -88,12 +89,37 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
{
struct vmw_legacy_display *lds = dev_priv->ldu_priv;
struct vmw_legacy_display_unit *entry;
struct drm_crtc *crtc;
struct drm_framebuffer *fb = NULL;
struct drm_crtc *crtc = NULL;
int i = 0;
/* to stop the screen from changing size on resize */
vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 0);
for (i = 0; i < lds->num_active; i++) {
/* If there is no display topology the host just assumes
* that the guest will set the same layout as the host.
*/
if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
int w = 0, h = 0;
list_for_each_entry(entry, &lds->active, active) {
crtc = &entry->base.crtc;
w = max(w, crtc->x + crtc->mode.hdisplay);
h = max(h, crtc->y + crtc->mode.vdisplay);
i++;
}
if (crtc == NULL)
return 0;
fb = entry->base.crtc.fb;
vmw_write(dev_priv, SVGA_REG_ENABLE, 0);
vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
fb->bits_per_pixel, fb->depth);
vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
return 0;
}
vmw_write(dev_priv, SVGA_REG_ENABLE, 0);
for (i = 0; i < lds->last_num_active; i++) {
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
@@ -103,8 +129,14 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
}
/* Now set the mode */
vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, lds->num_active);
if (!list_empty(&lds->active)) {
entry = list_entry(lds->active.next, typeof(*entry), active);
fb = entry->base.crtc.fb;
vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
fb->bits_per_pixel, fb->depth);
}
i = 0;
list_for_each_entry(entry, &lds->active, active) {
crtc = &entry->base.crtc;
@@ -120,6 +152,14 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
i++;
}
/* Make sure we always show something. */
vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, i ? i : 1);
vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
BUG_ON(i != lds->num_active);
lds->last_num_active = lds->num_active;
return 0;
}
@@ -491,18 +531,22 @@ int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
dev_priv->ldu_priv->num_active = 0;
dev_priv->ldu_priv->last_num_active = 0;
dev_priv->ldu_priv->fb = NULL;
drm_mode_create_dirty_info_property(dev_priv->dev);
vmw_ldu_init(dev_priv, 0);
vmw_ldu_init(dev_priv, 1);
vmw_ldu_init(dev_priv, 2);
vmw_ldu_init(dev_priv, 3);
vmw_ldu_init(dev_priv, 4);
vmw_ldu_init(dev_priv, 5);
vmw_ldu_init(dev_priv, 6);
vmw_ldu_init(dev_priv, 7);
/* for old hardware without multimon only enable one display */
if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
vmw_ldu_init(dev_priv, 1);
vmw_ldu_init(dev_priv, 2);
vmw_ldu_init(dev_priv, 3);
vmw_ldu_init(dev_priv, 4);
vmw_ldu_init(dev_priv, 5);
vmw_ldu_init(dev_priv, 6);
vmw_ldu_init(dev_priv, 7);
}
return 0;
}