diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index d8a982b71296520fd0344e9670e1f88b4b342b7d..e490e69db21e053e5b9f13a117d3591361873ca8 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -36,7 +36,7 @@
/*
* Detailed mode info for 800x600@60Hz
*/
-static struct drm_display_mode std_mode[] = {
+static struct drm_display_mode std_modes[] = {
{ DRM_MODE("800x600", DRM_MODE_TYPE_DEFAULT, 40000, 800, 840,
968, 1056, 0, 600, 601, 605, 628, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
@@ -60,15 +60,18 @@ static struct drm_display_mode std_mode[] = {
* changes have occurred.
*
* FIXME: take into account monitor limits
+ *
+ * RETURNS:
+ * Number of modes found on @connector.
*/
-void drm_helper_probe_single_connector_modes(struct drm_connector *connector,
- uint32_t maxX, uint32_t maxY)
+int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
+ uint32_t maxX, uint32_t maxY)
{
struct drm_device *dev = connector->dev;
struct drm_display_mode *mode, *t;
struct drm_connector_helper_funcs *connector_funcs =
connector->helper_private;
- int ret;
+ int count = 0;
DRM_DEBUG("%s\n", drm_get_connector_name(connector));
/* set all modes to the unverified state */
@@ -81,14 +84,14 @@ void drm_helper_probe_single_connector_modes(struct drm_connector *connector,
DRM_DEBUG("%s is disconnected\n",
drm_get_connector_name(connector));
/* TODO set EDID to NULL */
- return;
+ return 0;
}
- ret = (*connector_funcs->get_modes)(connector);
+ count = (*connector_funcs->get_modes)(connector);
+ if (!count)
+ return 0;
- if (ret) {
- drm_mode_connector_list_update(connector);
- }
+ drm_mode_connector_list_update(connector);
if (maxX && maxY)
drm_mode_validate_size(dev, &connector->modes, maxX,
@@ -102,25 +105,8 @@ void drm_helper_probe_single_connector_modes(struct drm_connector *connector,
drm_mode_prune_invalid(dev, &connector->modes, true);
- if (list_empty(&connector->modes)) {
- struct drm_display_mode *stdmode;
-
- DRM_DEBUG("No valid modes on %s\n",
- drm_get_connector_name(connector));
-
- /* Should we do this here ???
- * When no valid EDID modes are available we end up
- * here and bailed in the past, now we add a standard
- * 640x480@60Hz mode and carry on.
- */
- stdmode = drm_mode_duplicate(dev, &std_mode[0]);
- drm_mode_probed_add(connector, stdmode);
- drm_mode_list_concat(&connector->probed_modes,
- &connector->modes);
-
- DRM_DEBUG("Adding standard 640x480 @ 60Hz to %s\n",
- drm_get_connector_name(connector));
- }
+ if (list_empty(&connector->modes))
+ return 0;
drm_mode_sort(&connector->modes);
@@ -131,20 +117,58 @@ void drm_helper_probe_single_connector_modes(struct drm_connector *connector,
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
drm_mode_debug_printmodeline(mode);
}
+
+ return count;
}
EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
-void drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX,
+int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX,
uint32_t maxY)
{
struct drm_connector *connector;
+ int count = 0;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
- drm_helper_probe_single_connector_modes(connector, maxX, maxY);
+ count += drm_helper_probe_single_connector_modes(connector,
+ maxX, maxY);
}
+
+ return count;
}
EXPORT_SYMBOL(drm_helper_probe_connector_modes);
+static void drm_helper_add_std_modes(struct drm_device *dev,
+ struct drm_connector *connector)
+{
+ struct drm_display_mode *mode, *t;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(std_modes); i++) {
+ struct drm_display_mode *stdmode;
+
+ /*
+ * When no valid EDID modes are available we end up
+ * here and bailed in the past, now we add some standard
+ * modes and move on.
+ */
+ stdmode = drm_mode_duplicate(dev, &std_modes[i]);
+ drm_mode_probed_add(connector, stdmode);
+ drm_mode_list_concat(&connector->probed_modes,
+ &connector->modes);
+
+ DRM_DEBUG("Adding mode %s to %s\n", stdmode->name,
+ drm_get_connector_name(connector));
+ }
+ drm_mode_sort(&connector->modes);
+
+ DRM_DEBUG("Added std modes on %s\n", drm_get_connector_name(connector));
+ list_for_each_entry_safe(mode, t, &connector->modes, head) {
+ mode->vrefresh = drm_mode_vrefresh(mode);
+
+ drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+ drm_mode_debug_printmodeline(mode);
+ }
+}
/**
* drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
@@ -237,6 +261,8 @@ static void drm_enable_connectors(struct drm_device *dev, bool *enabled)
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
enabled[i] = drm_connector_enabled(connector, true);
+ DRM_DEBUG("connector %d enabled? %s\n", connector->base.id,
+ enabled[i] ? "yes" : "no");
any_enabled |= enabled[i];
i++;
}
@@ -265,11 +291,17 @@ static bool drm_target_preferred(struct drm_device *dev,
continue;
}
+ DRM_DEBUG("looking for preferred mode on connector %d\n",
+ connector->base.id);
+
modes[i] = drm_has_preferred_mode(connector, width, height);
- if (!modes[i]) {
+ /* No preferred modes, pick one off the list */
+ if (!modes[i] && !list_empty(&connector->modes)) {
list_for_each_entry(modes[i], &connector->modes, head)
break;
}
+ DRM_DEBUG("found mode %s\n", modes[i] ? modes[i]->name :
+ "none");
i++;
}
return true;
@@ -369,6 +401,8 @@ static void drm_setup_crtcs(struct drm_device *dev)
int width, height;
int i, ret;
+ DRM_DEBUG("\n");
+
width = dev->mode_config.max_width;
height = dev->mode_config.max_height;
@@ -390,6 +424,8 @@ static void drm_setup_crtcs(struct drm_device *dev)
if (!ret)
DRM_ERROR("Unable to find initial modes\n");
+ DRM_DEBUG("picking CRTCs for %dx%d config\n", width, height);
+
drm_pick_crtcs(dev, crtcs, modes, 0, width, height);
i = 0;
@@ -403,6 +439,8 @@ static void drm_setup_crtcs(struct drm_device *dev)
}
if (mode && crtc) {
+ DRM_DEBUG("desired mode %s set on crtc %d\n",
+ mode->name, crtc->base.id);
crtc->desired_mode = mode;
connector->encoder->crtc = crtc;
} else
@@ -764,10 +802,31 @@ bool drm_helper_plugged_event(struct drm_device *dev)
*/
bool drm_helper_initial_config(struct drm_device *dev, bool can_grow)
{
- int ret = false;
+ struct drm_connector *connector;
+ int count = 0;
- drm_helper_plugged_event(dev);
- return ret;
+ count = drm_helper_probe_connector_modes(dev,
+ dev->mode_config.max_width,
+ dev->mode_config.max_height);
+
+ /*
+ * None of the available connectors had any modes, so add some
+ * and try to light them up anyway
+ */
+ if (!count) {
+ DRM_ERROR("connectors have no modes, using standard modes\n");
+ list_for_each_entry(connector,
+ &dev->mode_config.connector_list,
+ head)
+ drm_helper_add_std_modes(dev, connector);
+ }
+
+ drm_setup_crtcs(dev);
+
+ /* alert the driver fb layer */
+ dev->mode_config.funcs->fb_changed(dev);
+
+ return 0;
}
EXPORT_SYMBOL(drm_helper_initial_config);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 0acb07f31fa43b6559214611b866f4d8a9d3bd12..47809ac94bc38c8d19387c416e4864934e40e1d7 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -395,7 +395,7 @@ struct drm_connector_funcs {
void (*save)(struct drm_connector *connector);
void (*restore)(struct drm_connector *connector);
enum drm_connector_status (*detect)(struct drm_connector *connector);
- void (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
+ int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
int (*set_property)(struct drm_connector *connector, struct drm_property *property,
uint64_t val);
void (*destroy)(struct drm_connector *connector);
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 4bc04cf460a7ee597f48bb05067a1bc59c7947eb..0c6f0e11b41bcfc823d94571c3be853087440e5a 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -88,7 +88,7 @@ struct drm_connector_helper_funcs {
struct drm_encoder *(*best_encoder)(struct drm_connector *connector);
};
-extern void drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
+extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
extern void drm_helper_disable_unused_functions(struct drm_device *dev);
extern int drm_helper_hotplug_stage_two(struct drm_device *dev);
extern bool drm_helper_initial_config(struct drm_device *dev, bool can_grow);