drm/fb: add support for tiled monitor configurations. (v2)
This adds fbdev/con support for tiled monitors, so that we
only set a mode on the correct half of the monitor, or
span the two halves if needed.
v2: remove unneeded ERROR, fix | vs ||
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index f2183b5..850cf7d 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -324,6 +324,7 @@
static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_crtc **crtcs,
struct drm_display_mode **modes,
+ struct drm_fb_offset *offsets,
bool *enabled, int width, int height)
{
struct drm_device *dev = fb_helper->dev;
@@ -332,6 +333,8 @@
bool fallback = true;
int num_connectors_enabled = 0;
int num_connectors_detected = 0;
+ uint64_t conn_configured = 0, mask;
+ int pass = 0;
save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool),
GFP_KERNEL);
@@ -339,7 +342,8 @@
return false;
memcpy(save_enabled, enabled, dev->mode_config.num_connector);
-
+ mask = (1 << fb_helper->connector_count) - 1;
+retry:
for (i = 0; i < fb_helper->connector_count; i++) {
struct drm_fb_helper_connector *fb_conn;
struct drm_connector *connector;
@@ -349,12 +353,19 @@
fb_conn = fb_helper->connector_info[i];
connector = fb_conn->connector;
+ if (conn_configured & (1 << i))
+ continue;
+
+ if (pass == 0 && !connector->has_tile)
+ continue;
+
if (connector->status == connector_status_connected)
num_connectors_detected++;
if (!enabled[i]) {
DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
connector->name);
+ conn_configured |= (1 << i);
continue;
}
@@ -373,6 +384,7 @@
DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
connector->name);
enabled[i] = false;
+ conn_configured |= (1 << i);
continue;
}
@@ -400,8 +412,8 @@
/* try for preferred next */
if (!modes[i]) {
- DRM_DEBUG_KMS("looking for preferred mode on connector %s\n",
- connector->name);
+ DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
+ connector->name, connector->has_tile);
modes[i] = drm_has_preferred_mode(fb_conn, width,
height);
}
@@ -444,6 +456,12 @@
modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");
fallback = false;
+ conn_configured |= (1 << i);
+ }
+
+ if ((conn_configured & mask) != mask) {
+ pass++;
+ goto retry;
}
/*