#include "drmP.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
+#include "drm_fb_helper.h"
-/*
- * Detailed mode info for 800x600@60Hz
- */
-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) },
-};
+static void drm_mode_validate_flag(struct drm_connector *connector,
+ int flags)
+{
+ struct drm_display_mode *mode, *t;
+
+ if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE))
+ return;
+
+ list_for_each_entry_safe(mode, t, &connector->modes, head) {
+ if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
+ !(flags & DRM_MODE_FLAG_INTERLACE))
+ mode->status = MODE_NO_INTERLACE;
+ if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
+ !(flags & DRM_MODE_FLAG_DBLSCAN))
+ mode->status = MODE_NO_DBLESCAN;
+ }
+
+ return;
+}
/**
* drm_helper_probe_connector_modes - get complete set of display modes
struct drm_connector_helper_funcs *connector_funcs =
connector->helper_private;
int count = 0;
+ int mode_flags = 0;
- DRM_DEBUG("%s\n", drm_get_connector_name(connector));
+ DRM_DEBUG_KMS("%s\n", drm_get_connector_name(connector));
/* set all modes to the unverified state */
list_for_each_entry_safe(mode, t, &connector->modes, head)
mode->status = MODE_UNVERIFIED;
- connector->status = connector->funcs->detect(connector);
+ if (connector->force) {
+ if (connector->force == DRM_FORCE_ON)
+ connector->status = connector_status_connected;
+ else
+ connector->status = connector_status_disconnected;
+ if (connector->funcs->force)
+ connector->funcs->force(connector);
+ } else
+ connector->status = connector->funcs->detect(connector);
if (connector->status == connector_status_disconnected) {
- DRM_DEBUG("%s is disconnected\n",
+ DRM_DEBUG_KMS("%s is disconnected\n",
drm_get_connector_name(connector));
- /* TODO set EDID to NULL */
- return 0;
+ goto prune;
}
count = (*connector_funcs->get_modes)(connector);
- if (!count)
- return 0;
+ if (!count) {
+ count = drm_add_modes_noedid(connector, 1024, 768);
+ if (!count)
+ return 0;
+ }
drm_mode_connector_list_update(connector);
if (maxX && maxY)
drm_mode_validate_size(dev, &connector->modes, maxX,
maxY, 0);
+
+ if (connector->interlace_allowed)
+ mode_flags |= DRM_MODE_FLAG_INTERLACE;
+ if (connector->doublescan_allowed)
+ mode_flags |= DRM_MODE_FLAG_DBLSCAN;
+ drm_mode_validate_flag(connector, mode_flags);
+
list_for_each_entry_safe(mode, t, &connector->modes, head) {
if (mode->status == MODE_OK)
mode->status = connector_funcs->mode_valid(connector,
mode);
}
-
+prune:
drm_mode_prune_invalid(dev, &connector->modes, true);
if (list_empty(&connector->modes))
drm_mode_sort(&connector->modes);
- DRM_DEBUG("Probed modes for %s\n", drm_get_connector_name(connector));
+ DRM_DEBUG_KMS("Probed modes for %s\n",
+ drm_get_connector_name(connector));
list_for_each_entry_safe(mode, t, &connector->modes, head) {
mode->vrefresh = drm_mode_vrefresh(mode);
}
EXPORT_SYMBOL(drm_helper_probe_connector_modes);
-static void drm_helper_add_std_modes(struct drm_device *dev,
- struct drm_connector *connector)
+/**
+ * drm_helper_encoder_in_use - check if a given encoder is in use
+ * @encoder: encoder to check
+ *
+ * LOCKING:
+ * Caller must hold mode config lock.
+ *
+ * Walk @encoders's DRM device's mode_config and see if it's in use.
+ *
+ * RETURNS:
+ * True if @encoder is part of the mode_config, false otherwise.
+ */
+bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
{
- 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);
- }
+ struct drm_connector *connector;
+ struct drm_device *dev = encoder->dev;
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+ if (connector->encoder == encoder)
+ return true;
+ return false;
}
+EXPORT_SYMBOL(drm_helper_encoder_in_use);
/**
* drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
struct drm_device *dev = crtc->dev;
/* FIXME: Locking around list access? */
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
- if (encoder->crtc == crtc)
+ if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
return true;
return false;
}
EXPORT_SYMBOL(drm_helper_crtc_in_use);
/**
- * drm_disable_unused_functions - disable unused objects
+ * drm_helper_disable_unused_functions - disable unused objects
* @dev: DRM device
*
* LOCKING:
void drm_helper_disable_unused_functions(struct drm_device *dev)
{
struct drm_encoder *encoder;
+ struct drm_connector *connector;
struct drm_encoder_helper_funcs *encoder_funcs;
struct drm_crtc *crtc;
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (!connector->encoder)
+ continue;
+ if (connector->status == connector_status_disconnected)
+ connector->encoder = NULL;
+ }
+
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
encoder_funcs = encoder->helper_private;
- if (!encoder->crtc)
- (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+ if (!drm_helper_encoder_in_use(encoder)) {
+ if (encoder_funcs->disable)
+ (*encoder_funcs->disable)(encoder);
+ else
+ (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+ /* disconnector encoder from any connector */
+ encoder->crtc = NULL;
+ }
}
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
return NULL;
}
+static bool drm_has_cmdline_mode(struct drm_connector *connector)
+{
+ struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
+ struct drm_fb_helper_cmdline_mode *cmdline_mode;
+
+ if (!fb_help_conn)
+ return false;
+
+ cmdline_mode = &fb_help_conn->cmdline_mode;
+ return cmdline_mode->specified;
+}
+
+static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height)
+{
+ struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
+ struct drm_fb_helper_cmdline_mode *cmdline_mode;
+ struct drm_display_mode *mode = NULL;
+
+ if (!fb_help_conn)
+ return mode;
+
+ cmdline_mode = &fb_help_conn->cmdline_mode;
+ if (cmdline_mode->specified == false)
+ return mode;
+
+ /* attempt to find a matching mode in the list of modes
+ * we have gotten so far, if not add a CVT mode that conforms
+ */
+ if (cmdline_mode->rb || cmdline_mode->margins)
+ goto create_mode;
+
+ list_for_each_entry(mode, &connector->modes, head) {
+ /* check width/height */
+ if (mode->hdisplay != cmdline_mode->xres ||
+ mode->vdisplay != cmdline_mode->yres)
+ continue;
+
+ if (cmdline_mode->refresh_specified) {
+ if (mode->vrefresh != cmdline_mode->refresh)
+ continue;
+ }
+
+ if (cmdline_mode->interlace) {
+ if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
+ continue;
+ }
+ return mode;
+ }
+
+create_mode:
+ mode = drm_cvt_mode(connector->dev, cmdline_mode->xres,
+ cmdline_mode->yres,
+ cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
+ cmdline_mode->rb, cmdline_mode->interlace,
+ cmdline_mode->margins);
+ drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+ list_add(&mode->head, &connector->modes);
+ return mode;
+}
+
static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
{
bool enable;
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,
+ DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
enabled[i] ? "yes" : "no");
any_enabled |= enabled[i];
i++;
continue;
}
- DRM_DEBUG("looking for preferred mode on connector %d\n",
- connector->base.id);
+ DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
+ connector->base.id);
- modes[i] = drm_has_preferred_mode(connector, width, height);
+ /* got for command line mode first */
+ modes[i] = drm_pick_cmdline_mode(connector, width, height);
+ if (!modes[i]) {
+ DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
+ connector->base.id);
+ modes[i] = drm_has_preferred_mode(connector, width, height);
+ }
/* 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 :
+ DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name :
"none");
i++;
}
my_score = 1;
if (connector->status == connector_status_connected)
my_score++;
+ if (drm_has_cmdline_mode(connector))
+ my_score++;
if (drm_has_preferred_mode(connector, width, height))
my_score++;
c = 0;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- if ((connector->encoder->possible_crtcs & (1 << c)) == 0) {
+ if ((encoder->possible_crtcs & (1 << c)) == 0) {
c++;
continue;
}
int width, height;
int i, ret;
- DRM_DEBUG("\n");
+ DRM_DEBUG_KMS("\n");
width = dev->mode_config.max_width;
height = dev->mode_config.max_height;
if (!ret)
DRM_ERROR("Unable to find initial modes\n");
- DRM_DEBUG("picking CRTCs for %dx%d config\n", width, height);
+ DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height);
drm_pick_crtcs(dev, crtcs, modes, 0, width, height);
}
if (mode && crtc) {
- DRM_DEBUG("desired mode %s set on crtc %d\n",
+ DRM_DEBUG_KMS("desired mode %s set on crtc %d\n",
mode->name, crtc->base.id);
crtc->desired_mode = mode;
connector->encoder->crtc = crtc;
- } else
+ } else {
connector->encoder->crtc = NULL;
+ connector->encoder = NULL;
+ }
i++;
}
kfree(modes);
kfree(enabled);
}
+
+/**
+ * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
+ * @encoder: encoder to test
+ * @crtc: crtc to test
+ *
+ * Return false if @encoder can't be driven by @crtc, true otherwise.
+ */
+static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
+ struct drm_crtc *crtc)
+{
+ struct drm_device *dev;
+ struct drm_crtc *tmp;
+ int crtc_mask = 1;
+
+ WARN(!crtc, "checking null crtc?");
+
+ dev = crtc->dev;
+
+ list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
+ if (tmp == crtc)
+ break;
+ crtc_mask <<= 1;
+ }
+
+ if (encoder->possible_crtcs & crtc_mask)
+ return true;
+ return false;
+}
+
+/*
+ * Check the CRTC we're going to map each output to vs. its current
+ * CRTC. If they don't match, we have to disable the output and the CRTC
+ * since the driver will have to re-route things.
+ */
+static void
+drm_crtc_prepare_encoders(struct drm_device *dev)
+{
+ struct drm_encoder_helper_funcs *encoder_funcs;
+ struct drm_encoder *encoder;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ encoder_funcs = encoder->helper_private;
+ /* Disable unused encoders */
+ if (encoder->crtc == NULL)
+ (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+ /* Disable encoders whose CRTC is about to change */
+ if (encoder_funcs->get_crtc &&
+ encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
+ (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+ }
+}
+
/**
* drm_crtc_set_mode - set a mode
* @crtc: CRTC to program
int saved_x, saved_y;
struct drm_encoder *encoder;
bool ret = true;
- bool depth_changed, bpp_changed;
adjusted_mode = drm_mode_duplicate(dev, mode);
if (!crtc->enabled)
return true;
- if (old_fb && crtc->fb) {
- depth_changed = (old_fb->depth != crtc->fb->depth);
- bpp_changed = (old_fb->bits_per_pixel !=
- crtc->fb->bits_per_pixel);
- } else {
- depth_changed = true;
- bpp_changed = true;
- }
-
saved_mode = crtc->mode;
saved_x = crtc->x;
saved_y = crtc->y;
crtc->x = x;
crtc->y = y;
- if (drm_mode_equal(&saved_mode, &crtc->mode)) {
- if (saved_x != crtc->x || saved_y != crtc->y ||
- depth_changed || bpp_changed) {
- ret = !crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y,
- old_fb);
- goto done;
- }
- }
-
/* Pass our mode to the connectors and the CRTC to give them a chance to
* adjust it according to limitations or connector properties, and also
* a chance to reject the mode entirely.
encoder_funcs->prepare(encoder);
}
+ drm_crtc_prepare_encoders(dev);
+
crtc_funcs->prepare(crtc);
/* Set up the DPLL and any encoders state that needs to adjust or depend
if (encoder->crtc != crtc)
continue;
- DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder),
+ DRM_DEBUG("%s: set mode %s %x\n", drm_get_encoder_name(encoder),
mode->name, mode->base.id);
encoder_funcs = encoder->helper_private;
encoder_funcs->mode_set(encoder, mode, adjusted_mode);
int drm_crtc_helper_set_config(struct drm_mode_set *set)
{
struct drm_device *dev;
- struct drm_crtc **save_crtcs, *new_crtc;
- struct drm_encoder **save_encoders, *new_encoder;
- struct drm_framebuffer *old_fb;
- bool save_enabled;
- bool mode_changed = false;
- bool fb_changed = false;
- struct drm_connector *connector;
+ struct drm_crtc *save_crtcs, *new_crtc, *crtc;
+ struct drm_encoder *save_encoders, *new_encoder, *encoder;
+ struct drm_framebuffer *old_fb = NULL;
+ bool mode_changed = false; /* if true do a full mode set */
+ bool fb_changed = false; /* if true and !mode_changed just do a flip */
+ struct drm_connector *save_connectors, *connector;
int count = 0, ro, fail = 0;
struct drm_crtc_helper_funcs *crtc_funcs;
int ret = 0;
- DRM_DEBUG("\n");
+ DRM_DEBUG_KMS("\n");
if (!set)
return -EINVAL;
crtc_funcs = set->crtc->helper_private;
- DRM_DEBUG("crtc: %p %d fb: %p connectors: %p num_connectors: %d (x, y) (%i, %i)\n",
+ DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:"
+ " %d (x, y) (%i, %i)\n",
set->crtc, set->crtc->base.id, set->fb, set->connectors,
(int)set->num_connectors, set->x, set->y);
dev = set->crtc->dev;
- /* save previous config */
- save_enabled = set->crtc->enabled;
-
- /*
- * We do mode_config.num_connectors here since we'll look at the
- * CRTC and encoder associated with each connector later.
- */
- save_crtcs = kzalloc(dev->mode_config.num_connector *
- sizeof(struct drm_crtc *), GFP_KERNEL);
+ /* Allocate space for the backup of all (non-pointer) crtc, encoder and
+ * connector data. */
+ save_crtcs = kzalloc(dev->mode_config.num_crtc *
+ sizeof(struct drm_crtc), GFP_KERNEL);
if (!save_crtcs)
return -ENOMEM;
- save_encoders = kzalloc(dev->mode_config.num_connector *
- sizeof(struct drm_encoders *), GFP_KERNEL);
+ save_encoders = kzalloc(dev->mode_config.num_encoder *
+ sizeof(struct drm_encoder), GFP_KERNEL);
if (!save_encoders) {
kfree(save_crtcs);
return -ENOMEM;
}
+ save_connectors = kzalloc(dev->mode_config.num_connector *
+ sizeof(struct drm_connector), GFP_KERNEL);
+ if (!save_connectors) {
+ kfree(save_crtcs);
+ kfree(save_encoders);
+ return -ENOMEM;
+ }
+
+ /* Copy data. Note that driver private data is not affected.
+ * Should anything bad happen only the expected state is
+ * restored, not the drivers personal bookkeeping.
+ */
+ count = 0;
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ save_crtcs[count++] = *crtc;
+ }
+
+ count = 0;
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ save_encoders[count++] = *encoder;
+ }
+
+ count = 0;
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ save_connectors[count++] = *connector;
+ }
+
/* We should be able to check here if the fb has the same properties
* and then just flip_or_move it */
if (set->crtc->fb != set->fb) {
/* If we have no fb then treat it as a full mode set */
- if (set->crtc->fb == NULL)
+ if (set->crtc->fb == NULL) {
+ DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
mode_changed = true;
- else if ((set->fb->bits_per_pixel !=
+ } else if (set->fb == NULL) {
+ mode_changed = true;
+ } else if ((set->fb->bits_per_pixel !=
set->crtc->fb->bits_per_pixel) ||
set->fb->depth != set->crtc->fb->depth)
fb_changed = true;
fb_changed = true;
if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
- DRM_DEBUG("modes are different\n");
+ DRM_DEBUG_KMS("modes are different, full mode set\n");
drm_mode_debug_printmodeline(&set->crtc->mode);
drm_mode_debug_printmodeline(set->mode);
mode_changed = true;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
struct drm_connector_helper_funcs *connector_funcs =
connector->helper_private;
- save_encoders[count++] = connector->encoder;
new_encoder = connector->encoder;
for (ro = 0; ro < set->num_connectors; ro++) {
if (set->connectors[ro] == connector) {
}
if (new_encoder != connector->encoder) {
+ DRM_DEBUG_KMS("encoder changed, full mode switch\n");
mode_changed = true;
+ /* If the encoder is reused for another connector, then
+ * the appropriate crtc will be set later.
+ */
+ if (connector->encoder)
+ connector->encoder->crtc = NULL;
connector->encoder = new_encoder;
}
}
if (fail) {
ret = -EINVAL;
- goto fail_no_encoder;
+ goto fail;
}
count = 0;
if (!connector->encoder)
continue;
- save_crtcs[count++] = connector->encoder->crtc;
-
if (connector->encoder->crtc == set->crtc)
new_crtc = NULL;
else
if (set->connectors[ro] == connector)
new_crtc = set->crtc;
}
+
+ /* Make sure the new CRTC will work with the encoder */
+ if (new_crtc &&
+ !drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
+ ret = -EINVAL;
+ goto fail;
+ }
if (new_crtc != connector->encoder->crtc) {
+ DRM_DEBUG_KMS("crtc changed, full mode switch\n");
mode_changed = true;
connector->encoder->crtc = new_crtc;
}
+ DRM_DEBUG_KMS("setting connector %d crtc to %p\n",
+ connector->base.id, new_crtc);
}
/* mode_set_base is not a required function */
set->crtc->fb = set->fb;
set->crtc->enabled = (set->mode != NULL);
if (set->mode != NULL) {
- DRM_DEBUG("attempting to set mode from userspace\n");
+ DRM_DEBUG_KMS("attempting to set mode from"
+ " userspace\n");
drm_mode_debug_printmodeline(set->mode);
if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
set->x, set->y,
DRM_ERROR("failed to set mode on crtc %p\n",
set->crtc);
ret = -EINVAL;
- goto fail_set_mode;
+ goto fail;
}
/* TODO are these needed? */
set->crtc->desired_x = set->x;
}
drm_helper_disable_unused_functions(dev);
} else if (fb_changed) {
+ set->crtc->x = set->x;
+ set->crtc->y = set->y;
+
old_fb = set->crtc->fb;
if (set->crtc->fb != set->fb)
set->crtc->fb = set->fb;
ret = crtc_funcs->mode_set_base(set->crtc,
set->x, set->y, old_fb);
if (ret != 0)
- goto fail_set_mode;
+ goto fail;
}
+ kfree(save_connectors);
kfree(save_encoders);
kfree(save_crtcs);
return 0;
-fail_set_mode:
- set->crtc->enabled = save_enabled;
+fail:
+ /* Restore all previous data. */
count = 0;
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
- if (!connector->encoder)
- continue;
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ *crtc = save_crtcs[count++];
+ }
- connector->encoder->crtc = save_crtcs[count++];
+ count = 0;
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ *encoder = save_encoders[count++];
}
-fail_no_encoder:
- kfree(save_crtcs);
+
count = 0;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
- connector->encoder = save_encoders[count++];
+ *connector = save_connectors[count++];
}
+
+ kfree(save_connectors);
kfree(save_encoders);
+ kfree(save_crtcs);
return ret;
}
EXPORT_SYMBOL(drm_crtc_helper_set_config);
bool drm_helper_plugged_event(struct drm_device *dev)
{
- DRM_DEBUG("\n");
+ DRM_DEBUG_KMS("\n");
drm_helper_probe_connector_modes(dev, dev->mode_config.max_width,
dev->mode_config.max_height);
/**
* drm_initial_config - setup a sane initial connector configuration
* @dev: DRM device
- * @can_grow: this configuration is growable
*
* LOCKING:
* Called at init time, must take mode config lock.
* RETURNS:
* Zero if everything went ok, nonzero otherwise.
*/
-bool drm_helper_initial_config(struct drm_device *dev, bool can_grow)
+bool drm_helper_initial_config(struct drm_device *dev)
{
- struct drm_connector *connector;
int count = 0;
+ /* disable all the possible outputs/crtcs before entering KMS mode */
+ drm_helper_disable_unused_functions(dev);
+
+ drm_fb_helper_parse_command_line(dev);
+
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
+ * we shouldn't end up with no modes here.
*/
- 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);
- }
+ if (count == 0)
+ printk(KERN_INFO "No connectors reported connected with modes\n");
drm_setup_crtcs(dev);
}
EXPORT_SYMBOL(drm_helper_initial_config);
+static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
+{
+ int dpms = DRM_MODE_DPMS_OFF;
+ struct drm_connector *connector;
+ struct drm_device *dev = encoder->dev;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+ if (connector->encoder == encoder)
+ if (connector->dpms < dpms)
+ dpms = connector->dpms;
+ return dpms;
+}
+
+static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
+{
+ int dpms = DRM_MODE_DPMS_OFF;
+ struct drm_connector *connector;
+ struct drm_device *dev = crtc->dev;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+ if (connector->encoder && connector->encoder->crtc == crtc)
+ if (connector->dpms < dpms)
+ dpms = connector->dpms;
+ return dpms;
+}
+
+/**
+ * drm_helper_connector_dpms
+ * @connector affected connector
+ * @mode DPMS mode
+ *
+ * Calls the low-level connector DPMS function, then
+ * calls appropriate encoder and crtc DPMS functions as well
+ */
+void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
+{
+ struct drm_encoder *encoder = connector->encoder;
+ struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
+ int old_dpms;
+
+ if (mode == connector->dpms)
+ return;
+
+ old_dpms = connector->dpms;
+ connector->dpms = mode;
+
+ /* from off to on, do crtc then encoder */
+ if (mode < old_dpms) {
+ if (crtc) {
+ struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+ if (crtc_funcs->dpms)
+ (*crtc_funcs->dpms) (crtc,
+ drm_helper_choose_crtc_dpms(crtc));
+ }
+ if (encoder) {
+ struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+ if (encoder_funcs->dpms)
+ (*encoder_funcs->dpms) (encoder,
+ drm_helper_choose_encoder_dpms(encoder));
+ }
+ }
+
+ /* from on to off, do encoder then crtc */
+ if (mode > old_dpms) {
+ if (encoder) {
+ struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+ if (encoder_funcs->dpms)
+ (*encoder_funcs->dpms) (encoder,
+ drm_helper_choose_encoder_dpms(encoder));
+ }
+ if (crtc) {
+ struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+ if (crtc_funcs->dpms)
+ (*crtc_funcs->dpms) (crtc,
+ drm_helper_choose_crtc_dpms(crtc));
+ }
+ }
+
+ return;
+}
+EXPORT_SYMBOL(drm_helper_connector_dpms);
+
/**
* drm_hotplug_stage_two
* @dev DRM device
int drm_helper_resume_force_mode(struct drm_device *dev)
{
struct drm_crtc *crtc;
+ struct drm_encoder *encoder;
+ struct drm_encoder_helper_funcs *encoder_funcs;
+ struct drm_crtc_helper_funcs *crtc_funcs;
int ret;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (ret == false)
DRM_ERROR("failed to set mode on crtc %p\n", crtc);
+
+ /* Turn off outputs that were already powered off */
+ if (drm_helper_choose_crtc_dpms(crtc)) {
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+
+ if(encoder->crtc != crtc)
+ continue;
+
+ encoder_funcs = encoder->helper_private;
+ if (encoder_funcs->dpms)
+ (*encoder_funcs->dpms) (encoder,
+ drm_helper_choose_encoder_dpms(encoder));
+
+ crtc_funcs = crtc->helper_private;
+ if (crtc_funcs->dpms)
+ (*crtc_funcs->dpms) (crtc,
+ drm_helper_choose_crtc_dpms(crtc));
+ }
+ }
}
+ /* disable the unused connectors while restoring the modesetting */
+ drm_helper_disable_unused_functions(dev);
return 0;
}
EXPORT_SYMBOL(drm_helper_resume_force_mode);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff