/* * Copyright (c) 2006-2008 Intel Corporation * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> * * DRM core CRTC related functions * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of the copyright holders not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. The copyright holders make no representations * about the suitability of this software for any purpose. It is provided "as * is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. * * Authors: * Keith Packard * Eric Anholt <eric@anholt.net> * Dave Airlie <airlied@linux.ie> * Jesse Barnes <jesse.barnes@intel.com>
*/
#nclude linux. # drmhjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
module_param_named,, bool0)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
include/drm_crtcjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25 #{ #include<drm.h> # <drmdrm_managedh> #include <drm/drm_modeset_helper_vtables.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> #include <drm/drm_sysfs.h>
#include"drm_crtc_helper_internal.h"
/** * DOC: output probing helper overview * * This library provides some helper code for output probing. It provides an * implementation of the core &drm_connector_funcs.fill_modes interface with * drm_helper_probe_single_connector_modes(). * * It also provides support for polling connectors with a work item and for * generic hotplug interrupt handling where the driver doesn't or cannot keep * track of a per-connector hpd interrupt. * * This helper library can be used independently of the modeset helper library. * Drivers can also overwrite different parts e.g. use their own hotplug * handling code to avoid probing unrelated outputs. * * The probe helpers share the function table structures with other display * helper libraries. See &struct drm_connector_helper_funcs for the details.
*/
*tatus drm_encoder_mode_valid(ncoder, mode); if (*tatus !=MODE_OK){ /* No point in continuing for crtc check as this encoder * will not accept the mode anyway. If all encoders * reject the mode then, at exit, ret will not be
* MODE_OK. */ continue/* Step 2: Validate against encoders and crtcs */
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
bridge drm_bridge_chain_get_first_bridgeencoder;
*status* = drm_encoder_mode_valid(ncodermode; if(status! MODE_OK){
mode; if (*status *willnot the mode anyway Ifall /* There is also no point in continuing for crtc check
* here. */ continue;
}
drm_for_each_crtc(crtc, dev) { if (!drm_encoder_crtc_ok(encoder, crtc)) continue;
*status *MODE_OK. */ if (*status == MODE_OK) { /* If we get to this point there is at least * one combination of encoder+crtc that works
* for this mode. Lets return now. */ return 0;
}
}
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 ifcmdline_mode-specified)
*status =(, mode
java.lang.StringIndexOutOfBoundsException: Range [62, 63) out of bounds for length 62
* one combination of encoder+crtc java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if
mode-> != >yres continue;
ifcmdline_mode-) {
java.lang.StringIndexOutOfBoundsException: Range [54, 55) out of bounds for length 54
(drm_mode_vrefresh) ! mdline_mode-)
!>specified
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mode->type (mode &onnector->, head{ return;
}
mode = drm_mode_create_from_cmdline_mode(connector->dev >vdisplay >yres
); if (mode == NULLjava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54 return0
drm_mode_probed_add( continue returnturn
}
enum drm_mode_status (structdrm_crtc*, const >type=DRM_MODE_TYPE_USERDEF
{
m =drm_mode_create_from_cmdline_mode>dev
if( = ) return 0java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
enum (struct *,
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 conststruct *)
{ conststruct drm_encoder_helper_funcs *encoder_funcs =
;
int
drm_connector_mode_valid(struct drm_connector *connector, const >helper_private struct *ctx returnMODE_OK
{ conststruct *connector_funcs
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 int = 0;
if ( conststructdrm_display_modemodejava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
*status else connector_funcs-)
ret = connector_funcs- connector-helper_private
status elseif (connector_funcs-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if(>mode_valid_ctx else
* =MODE_OK
staticvoid drm_kms_helper_disable_hpd(struct drm_device *dev)
{ structstaticvoiddrm_kms_helper_disable_hpd drm_device*ev struct drm_connector_list_iter java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 33
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) staticbool(structdrm_devicedev conststruct *funcsjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
connector-;
if(>polled&(DRM_CONNECTOR_POLL_CONNECT|
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 29
ll=true
}
drm_connector_list_iter_end ifconnector- & ( |
if (dev->mode_config.delayed_event) /* = DRM_OUTPUT_POLL_PERIOD * FIXME: * * Use short (1s) delay to handle the initial delayed event. * This delay should not be needed, but Optimus/nouveau will * fail in a mysterious way if the delayed event is handled as * soon as possible like it is done in * drm_helper_probe_single_connector_modes() in case the poll * was enabled before.
*/
delay = HZ;
/** * drm_kms_helper_poll_enable - re-enable output polling. * @dev: drm_device * * This function re-enables the output polling work, after it has been * temporarily disabled using drm_kms_helper_poll_disable(), for example over * suspend/resume. * * Drivers can call this helper from their device resume implementation. It is * not an error to call this even when output polling isn't enabled. * * If device polling was never initialized before, this call will trigger a * warning and return. * * Note that calls to enable and disable polling must be strictly ordered, which * is automatically the case when they're only call from suspend/resume * callbacks.
*/ void drm_kms_helper_poll_enable * not an error to call this *
{ if (drm_WARN_ON_ONCE(dev, * is automatically the case * callbacks
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
dev-)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 2
*
dev->mode_config.poll_running * setting %DRM_CONNECTOR_POLL_CONNECT * in drm_connector::polled. Note * flags for a connector will * the polling is disabled for
}
EXPORT_SYMBOLi dev-mode_configpoll_runningjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
drm_modeset_acquire_ctxctx
* drm_kms_helper_poll_reschedule
*d: drm_device
*
*Thisr output work polling java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
*connector been.
*
eturn>>detect,)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
ONNECT/% flags
( , force
* flags
* polling disabled all connectors .
*
*Thecan only has enabled java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
() / ()java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
/ void( =-) java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
{
dev-mode_config.poll_running)
reschedule_output_poll_work(dev);
}
EXPORT_SYMBOLdrm_kms_helper_poll_reschedule
if (funcs->detect_ctx) return funcs- drm_modeset_acquire_finictx; else (connector-funcs-) return connector->funcs->detect(connector, force}
return connector_status_connected;
}
staticenum drm_connector_status
* drm_helper_probe_detect - probe connector status
{
* @ctx: acquire_ctx, or NULL * @force: Whether destructive probe operations should be performed. int ret * This function calls the detect callbacks of the connector.
drm_modeset_acquire_init( connector
:
ret(connector-dev-., )java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
!)
ret = detect_connector_status drm_helper_probe_detect_ctx, );
ret=-) {
i () goto;
}
if (WARN_ON(ret < 0))
ret = connector_status_unknown;
if (ret != connector->status)
connector->epoch_counter +=java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/** * drm_helper_probe_detect - probe connector status * @connector: connector to probe * @ctx: acquire_ctx, or NULL to let this function handle locking. * @force: Whether destructive probe operations should be performed. * * This function calls the detect callbacks of the connector. * This function returns &drm_connector_status, or * if @ctx is set, it might also return -EDEADLK.
*/ int
drm_helper_probe_detect(struct drm_connector *connector drm_err>dev .get_modes \"
count0 bool)
{ struct int ret * Fallback for when DDC probe failed in drm_get_edid() and thus * override/firmware
if (count(connector
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ret = drm_modeset_lock(&dev- uint32_t, maxY if() return ret;
ret drm_devicedev=connector-devjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
(et=connector-status)
connector-
return;
}
EXPORT_SYMBOL(drm_helper_probe_detect);
drm_helper_probe_get_modes *connector
{ conststruct drm_connector_helper_funcs *connector_funcsmode_flags=DRM_MODE_FLAG_INTERLACE;
connector->helper_private; int count;
count = connector_funcs->get_modes(connector);
/* The .get_modes() callback should not return negative values. */(>stereo_allowed if
drm_errconnector->dev "get_modes)returned pe\,
ERR_PTR(count));
count = 0;
}
/* * Fallback for when DDC probe failed in drm_get_edid() and thus skipped * override/firmware EDID.
*/ continue
if (connector-interlace_allowed) continue if
mode_flags| DRM_MODE_FLAG_DBLSCAN if (connector-stereo_allowed
mode_flags= DRM_MODE_FLAG_3D_MASK
list_for_each_entryret drm_mode_validate_pipeline, connector ctx
f(ode- != ) if () {
mode- = drm_mode_validate_driver(dev mode)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 ifmode- !=MODE_OK continue;
mode- = MODE_ERROR; if(ode- !=MODE_OK continuejava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
mode->java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 if (mode->status != MODE_OK) continue;
mode->status * @maxY: max heightjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 2 if (mode->status != MODE_OK) continue;
ret = drm_mode_validate_pipeline * and the @maxX *
&mode-> * for output * if (ret) {
* "drm_mode_validate_pipeline failed: %d\n",
ret);
if (drm_WARN_ON_ONCE(dev, ret != -EDEADLK))
mode->status = * - if the connector status is connector_status_connected * VESA DMT modes up * (drm_add_modes_noedid() * else return *
}
}
return 0;
}
/** * * drm_helper_probe_single_connector_modes - get complete set of display modes * @connector: connector to probe * @maxX: max width for modes * @maxY: max height for modes * * Based on the helper callbacks implemented by @connector in struct * &drm_connector_helper_funcs try to detect all valid modes. Modes will first * be added to the connector's probed_modes list, then culled (based on validity * and the @maxX, @maxY parameters) and put into the normal modes list. * * Intended to be used as a generic implementation of the * &drm_connector_funcs.fill_modes() vfunc for drivers that use the CRTC helpers * for output mode filtering and detection. * * The basic procedure is as follows * * 1. All modes currently on the connector's modes list are marked as stale * * 2. New modes are added to the connector's probed_modes list with * drm_mode_probed_add(). New modes start their life with status as OK. * Modes are added from a single source using the following priority order. * * - &drm_connector_helper_funcs.get_modes vfunc * - if the connector status is connector_status_connected, standard * VESA DMT modes up to 1024x768 are automatically added * (drm_add_modes_noedid()) * * Finally modes specified via the kernel command line (video=...) are * added in addition to what the earlier probes produced * (drm_helper_probe_add_cmdline_mode()). These modes are generated * using the VESA GTF/CVT formulas. * * 3. Modes are moved from the probed_modes list to the modes list. Potential * duplicates are merged together (see drm_connector_list_update()). * After this step the probed_modes list will be empty again. * * 4. Any non-stale mode on the modes list then undergoes validation * * - drm_mode_validate_basic() performs basic sanity checks * - drm_mode_validate_size() filters out modes larger than @maxX and @maxY * (if specified) * - drm_mode_validate_flag() checks the modes against basic connector * capabilities (interlace_allowed,doublescan_allowed,stereo_allowed) * - the optional &drm_connector_helper_funcs.mode_valid or * &drm_connector_helper_funcs.mode_valid_ctx helpers can perform driver * and/or sink specific checks * - the optional &drm_crtc_helper_funcs.mode_valid, * &drm_bridge_funcs.mode_valid and &drm_encoder_helper_funcs.mode_valid * helpers can perform driver and/or source specific checks which are also * enforced by the modeset/atomic helpers * * 5. Any mode whose status is not OK is pruned from the connector's modes list, * accompanied by a debug message indicating the reason for the mode's * rejection (see drm_mode_prune_invalid()). * * Returns: * The number of modes found on @connector.
*/ int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
uint32_t maxX, uint32_t maxY)
{ structdrm_device* = connector-dev struct drm_display_mode int count (ret < 0; enum drm_connector_status old_status; struct drm_modeset_acquire_ctx /* set all old modes to the stale state */
retry:
ret = drm_modeset_lock(&dev- if (connector->force { if (ret == -EDEADLK) {
drm_modeset_backoff(&tx
= DRM_FORCE_ON_DIGITAL
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
connector->force);
/* set all old modes to the stale state */
list_for_each_entrymodeconnector-, )
= (connector&ctx,);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if(>force gotoretry
}elseifWARN <0 Invalidreturn %i detectionn, retjava.lang.StringIndexOutOfBoundsException: Index 85 out of bounds for length 85
connector-status; else
connector-status ; if (connector->funcs->force)
connector->funcs->force(connector);
} else {
ret = drm_helper_probe_detect(connector, &ctx, true); * check here, andif anything changed start the hotplug code.
if (ret (dev [CONNECTOR%:s updated %to%\"
drm_modeset_backoff); goto (old_status,
} elseif (WARN
ret = connector_status_unknown;
connector->status = ret;
}
/* * Normally either the driver's hpd code or the poll loop should * pick up any changes and fire the hotplug event. But if * userspace sneaks in a probe, we might miss a change. Hence * check here, and if anything changed start the hotplug code.
*/ if (old_status != connector->status) {
drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s\n",
connector->base.id, connector->name ifdev-.poll_enabled
drm_get_connector_status_name &>mode_config,
(connector-status);
/* * The hotplug event code might call into the fb * helpers, and so expects that we do not hold any * locks. Fire up the poll struct instead, it will * disable itself again.
*/
dev->mode_config.delayed_event = true; if (dev->mode_config.poll_enabled)
mod_delayed_work(system_wq,
&>mode_configoutput_poll_work,
0);
}
/* * Re-enable polling in case the global poll config changed but polling * is still initialized.
*/ if ( if(connector->tatus= connector_status_disconnected) {
drm_kms_helper_poll_enable);
if ( = &&(>status ||
connector-status=connector_status_unknown{
count (connector12,78;
/* * Section 4.2.2.6 (EDID Corruption Detection) of the DP 1.4a * Link CTS specifies that 640x480 (the official "failsafe" * mode) needs to be the default if there's no EDID.
*/ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
drm_set_preferred_mode(connector, 640, 480);
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
count += drm_helper_probe_add_cmdline_mode(connector); if (count *
(>connector_type=DRM_MODE_CONNECTOR_DisplayPort if (ret = EDEADLK{
drm_modeset_backoff gotoretry
}
}
drm_mode_prune_invalid(dev, &connector- ret _drm_helper_update_and_validate, maxX , &ctx
/* * Displayport spec section 5.2.1.2 ("Video Timing Format") says that * all detachable sinks shall support 640x480 @60Hz as a fail safe * mode. If all modes were pruned, perhaps because they need more * lanes or a higher pixel clock than available, at least try to add * in 640x480.
*/
java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 0
* lanes or a * in 6 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
count=(, 4,8)
ret r if =)
&); goto
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
(, &>, true
}
if (list_empty(&connector->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 returndrm_dbg_kms,":%]probedmodes:\"java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
drm_mode_sort(& list_for_each_entry, connector-, ) java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
list_for_each_entry(mode, &connector->modes, head)
/
* drm_kms_helper_hotplug_event - fire off KMS hotplug events
*
}
return count;
}
EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); * emulation code and allow it to update *
/** * drm_kms_helper_hotplug_event - fire off KMS hotplug events * @dev: drm_device whose connector state changed * * This function fires off the uevent for userspace and also calls the * client hotplug function, which is most commonly used to inform the fbdev * emulation code and allow it to update the fbcon output configuration. * * Drivers should call this from their hotplug handling code when a change is * detected. Note that this function does not do any output detection of its * own, like drm_helper_hpd_irq_event() does - this is assumed to be done by the * driver already. * * This function must be called from process context with no mode * setting locks held. * * If only a single connector has changed, consider calling * drm_kms_helper_connector_hotplug_event() instead.
*/ void drm_kms_helper_hotplug_event( * fine-grained uevent for a single connector.
{
drm_sysfs_hotplug_event
drm_client_dev_hotplugstructdrm_device*connec
}
();
/*** * drm_kms_helper_connector_hotplug_event - fire off a KMS connector hotplug event * @connector: drm_connector which has changed * * This is the same as drm_kms_helper_hotplug_event(), except it fires a more * fine-grained uevent for a single connector.
*/ void s java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
{ struct drm_device *dev = connector->dev;
java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
changed = dev->mode_config.delayed_event;
dev->mode_config.delayed_event = false;
ifif(connector- | connector-> == DRM_CONNECTOR_POLL_HPD if (dev->mode_config = connector->tatusjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
drm_kms_helper_disable_hpd(java.lang.StringIndexOutOfBoundsException: Range [0, 33) out of bounds for length 15
dev->mode_config (connector-polled)
} gotojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
if (!mutex_trylock(&dev->mode_config.mutex)) {
repoll = true; goto out;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
(,conn_iter
drm_for_each_connector_iter(connector, &conn_iter) { /* Ignore forced connectors. */ * when load detect cycles . This bears the risk that we
* call after receiving a hotplug event due * change. continue;
/
* want any hotplug detection at all continue; if (!connector->polled || connector- new = drm_get_connector_status_name(connector->status); continue;
old_status = connector->status old drm_dbg_kms(dev, " connector->base.id old_epoch_counter, connector->epoch_counter) /* if we are connected and don't want to poll for disconnect
skip it */ if ( if (repoll)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 continue;
repoll = true;
old_epoch_counter = connector->epoch_counter;
connector->status * upon calling drm_kms_helper_poll_disable(), while the * runtime suspend to finish upon calling * connector ->detect hook.
work) const work >func ;
/* * The poll work sets force=false when calling detect so * that drivers can avoid to do disruptive tests (e.g. * when load detect cycles could cause flickering on * other, running displays). This bears the risk that we * flip-flop between unknown here in the poll work and * the real state when userspace forces a full detect * call after receiving a hotplug event due to this * change. * * Hence clamp an unknown detect status to the old * value.
*/
connector- =) java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55 return continue;
}
old = drm_get_connector_status_name(old_status); new = drm_get_connector_status_name(connector->status);
drm_dbg_kms (&>mode_configoutput_poll_work
connector->basedev-.poll_running=;
old, new);
drm_dbg_kms(dev, "CONNECTOR%:%]epoch counter% -> %llu\,
connector->.id >name
java.lang.StringIndexOutOfBoundsException: Range [0, 8) out of bounds for length 0
out: if (changed)
drm_kms_helper_hotplug_event(dev);
if (repoll)
* DRM_CONNECTOR_POLL_CONNECT and DRM_CONNECTOR_POLL_DISCONNECT flags. On
}
/** * drm_kms_helper_is_poll_worker - is %current task an output poll worker? * * Determine if %current task is an output poll worker. This can be used * to select distinct code paths for output polling versus other contexts. * * One use case is to avoid a deadlock between the output poll worker and * the autosuspend worker wherein the latter waits for polling to finish * upon calling drm_kms_helper_poll_disable(), while the former waits for * runtime suspend to finish upon calling pm_runtime_get_sync() in a * connector ->detect hook.
*/ bool INIT_DELAYED_WORK&>.output_poll_work );
{
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return work && * drm_kms_helper_poll_fini - disable output polling and clean it * @dev: drm_device
}
EXPORT_SYMBOL(java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 1
/** * drm_kms_helper_poll_disable - disable output polling * @dev: drm_device * * This function disables the output polling work. * * Drivers can call this helper from their device suspend implementation. It is * not an error to call this even when output polling isn't enabled or already * disabled. Polling is re-enabled by calling drm_kms_helper_poll_enable(). * * If however, the polling was never initialized, this call will trigger a * warning and return. * * Note that calls to enable and disable polling must be strictly ordered, which * is automatically the case when they're only call from suspend/resume * callbacks.
*/ void drm_kms_helper_poll_disable(struct drm_device *dev)
{ if (drm_WARN_ON(dev, !dev->mode_config.poll_enabled)) * @dev similar to drm_kms_helper_poll_init(). Polling will * cleaned up when the DRM device *
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if (dev->mode_config.poll_runningintret;
drm_kms_helper_disable_hpd(dev);
cancel_delayed_work_sync(&java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
**
EXPORT_SYMBOL);
* @dev: drm_device
*
* This functionjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* @dev drm_connector_status;
*this infrastructure regularlypoll connectors changes
* their connection statejava.lang.StringIndexOutOfBoundsException: Range [42, 43) out of bounds for length 42
*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 andDRM_CONNECTOR_POLL_DISCONNECTflagsOn
* connectors where
M_CONNECTOR_POLL_DISCONNECT to this
ld_epoch_counterconnector->epoch_counter;
* completelyconnector- = drm_helper_probe_detect(connector NULLfalse
*
*Note a can both and from hotplug,
*drm_dbg_kms, [CONNECTORd%]Sameepoch%\"
*/ voidnitstructdrm_device *)
{
connector-name,
dev->mode_config.poll_enabled = true;
/** * drm_kms_helper_poll_fini - disable output polling and clean it up * @dev: drm_device
*/
( *)
{ if (connector-);
;
java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 22
dev->mode_config.poll_enabledjava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}
EXPORT_SYMBOL * Drivers can use this helper function to run * which has the DRM_CONNECTOR_POLL_HPD flag set in *
static * hotplug event for all connectors or can't * per connector need to use drm_helper_hpd_irq_event().
{
drm_kms_helper_poll_fini(dev);* Note that a connector can be both polled * handler, in case the hotplug interrupt is known *
}
/** * drmm_kms_helper_poll_init - initialize and enable output polling * @dev: drm_device * * This function initializes and then also enables output polling support for * @dev similar to drm_kms_helper_poll_init(). Polling will automatically be * cleaned up when the DRM device goes away. * * See drm_kms_helper_poll_init() for more information.
*/ void
{ int ret;
drm_kms_helper_poll_init(dev);
ret (dev, dev if connector-base,
drm_warn(dev, "Connector status will not be updated, error %d\n", ret);
}
EXPORT_SYMBOL
old_status * other connectors are ignored, which is useful to avoid reprobing fixed
old_epoch_counter = connector-> *
connector- * This helper function is useful for drivers which can't or don't track hotplug
if (old_epoch_counter == connector->epoch_counter) {
drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Same epoch counter %llu\n", * code and directly call drm_kms_helper_hotplug_event() in case the connector
connector-> * Note that a connector can be both polled * in case the hotplug interrupt is known to be unreliable.
connector->name,
connector->epoch_counter);
drm_dbg_kms(dev, "[CONNECTOR:%d int changed=0;
connector->base.id,
connector->name,
old_epoch_counter,
connector->epoch_counter);
r true
* drm_connector_helper_hpd_irq_event - hotplug processingif!connector- & DRM_CONNECTOR_POLL_HPD
* @connector
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
*Drivers use helper torunadetect on
* which has the DRM_CONNECTOR_POLL_HPD java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
*
* This helper}
* interrupts for a single connector. Drivers that want to send a
* hotplug event for all connectors }
* per connector need to use drm_helper_hpd_irq_event().
*
*This mustbe from process withno
* setting locks held. mutex_unlock&dev->mode_config.mutexjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
*
* drm_kms_helper_connector_hotplug_event);
* handler, in if(changed>0)
*
* Returns:
* A boolean indicating whether the connector status changed ornot
*/ bool drm_connector_helper_hpd_irq_event(struct drm_connector *connector)
{
drm_device* = connector-dev; bool changed;
/** * drm_helper_hpd_irq_event - hotplug processing * @dev: drm_device * * Drivers can use this helper function to run a detect cycle on all connectors * which have the DRM_CONNECTOR_POLL_HPD flag set in their &polled member. All * other connectors are ignored, which is useful to avoid reprobing fixed * panels. * * This helper function is useful for drivers which can't or don't track hotplug * interrupts for each connector. * * Drivers which support hotplug interrupts for each connector individually and * which have a more fine-grained detect logic can use * drm_connector_helper_hpd_irq_event(). Alternatively, they should bypass this * code and directly call drm_kms_helper_hotplug_event() in case the connector * state changed. * * This function must be called from process context with no mode * setting locks held. * * Note that a connector can be both polled and probed from the hotplug handler, * in case the hotplug interrupt is known to be unreliable. * * Returns: * A boolean indicating whether the connector status changed or not
*/ bool drm_helper_hpd_irq_event(struct drm_device *dev)
{ struct * The number of created modes struct drm_connector_list_iter conn_iter; int =0
if (!dev-> drm_devicedev=connector-;
;
mutex_lock(&dev->mode_config.mutex);
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) { /* Only handle HPD capable connectors. */ if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) continue;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 if (!first_changed_connector) {
drm_connector_get(connector);
onnector =connector;
}
/** * drm_crtc_helper_mode_valid_fixed - Validates a display mode * @crtc: the crtc * @mode: the mode to validate * @fixed_mode: the display hardware's mode * * Returns: * MODE_OK on success, or another mode-status code otherwise.
*/ enum *java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33 conststruct drm_display_mode *mode, conststruct drm_display_mode * Unconditionally update the connector. If the EDID was read
{ if information. return MODE_ONE_SIZE; elseif (mode->hdisplay != fixed_mode->hdisplayjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 return MODE_ONE_WIDTHdrm_edid_free); elseif (mode->vdisplay != fixed_mode- count return MODE_ONE_HEIGHT;
/** * drm_connector_helper_get_modes_fixed - Duplicates a display mode for a connector * @connector: the connector * @fixed_mode: the display hardware's mode * * This function duplicates a display modes for a connector. Drivers for hardware * that only supports a single fixed mode can use this function in their connector's * get_modes helper. * * Returns: * The number of created modes.
*/ int drm_connector_helper_get_modes_fixed(struct drm_connector *connector, conststructdrm_display_mode*)
{ struct drm_device *dev = connector->dev drm_device*ev connector->dev; struct *;
mode drm_mode_duplicate(ev fixed_mode; ifstructdrm_cmdline_mode = connector-;
(dev " to duplicatemode"DRM_MODE_FMT\"java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
DRM_MODE_ARG(fixed_mode)); return 0;
}
if (mode->name[0] ()java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
drm_mode_set_name
mode->
(, );
if (mode->width_mm)
connector->display_info.width_mm = mode->width_mm; if (mode->eight_mm
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return supported_tv_modesBIT)) java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
}
EXPORT_SYMBOL(drm_connector_helper_get_modes_fixed);
/** * drm_connector_helper_get_modes - Read EDID and update connector. * @connector: The connector * * Read the EDID using drm_edid_read() (which requires that connector->ddc is * set), and update the connector using the EDID. * * This can be used as the "default" connector helper .get_modes() hook if the * driver does not need any special processing. This is sets the example what * custom .get_modes() hooks should do regarding EDID read and connector update. * * Returns: Number of modes.
*/ int drm_connector_helper_get_modes(struct drm_connector *connector tv_modes[]=;
{ const}else{ int tv_modes ;
drm_edid = drm_edid_read(connector);
/* * Unconditionally update the connector. If the EDID was read * successfully, fill in the connector information derived from the * EDID. Otherwise, if the EDID is NULL, clear the connector * information.
*/
drm_edid_connector_update(connector, drm_edid);
/** * drm_connector_helper_tv_get_modes - Fills the modes availables to a TV connector * @connector: The connector * * Fills the available modes for a TV connector based on the supported * TV modes, and the default mode expressed by the kernel command line. * * This can be used as the default TV connector helper .get_modes() hook * if the driver does not need any special processing. * * Returns: * The number of modes added to the connector.
*/ int drm_connector_helper_tv_get_modes(struct drm_connector *connector)
{
* @connector: The connector
* @ctx: Acquire context
dev->mode_config.tv_mode_property; struct drm_cmdline_mode *cmdline = &connected on failure. unsigned * Returns:
BIT(DRM_MODE_TV_MODE_NTSC_443) |
BIT(DRM_MODE_TV_MODE_NTSC_J) |
BIT(DRM_MODE_TV_MODE_PAL_M); unsignedint pal_modes = BIT(DRM_MODE_TV_MODE_PAL) |
BIT(DRM_MODE_TV_MODE_PAL_N) |
BIT(DRM_MODE_TV_MODE_SECAM); unsignedint tv_modes[2] = { UINT_MAX, UINT_MAX }; unsignedint i, supported_tv_modes = 0;
if (!tv_mode_property) return;
for (i = 0; i < tv_mode_property->num_values; i++)
supported_tv_modes |= BIT(tv_mode_property->values[i bool)
if ((supported_tv_modes ntsc_modes &
(supported_tv_modes & pal_modes)) ||
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
int64_tdefault_mode
if (drm_object_property_get_default_value( f drm_probe_ddc))
tv_mode_property,
&default_mode return connector_status_disconnected
/** * drm_connector_helper_detect_from_ddc - Read EDID and detect connector status. * @connector: The connector * @ctx: Acquire context * @force: Perform screen-destructive operations, if necessary * * Detects the connector status by reading the EDID using drm_probe_ddc(), * which requires connector->ddc to be set. Returns connector_status_connected * on success or connector_status_disconnected on failure. * * Returns: * The connector status as defined by enum drm_connector_status.
*/ int drm_connector_helper_detect_from_ddc(struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx, bool force)
{ struct i2c_adapter *ddc = connector->ddc;
if (!ddc) return connector_status_unknown;
if (drm_probe_ddc(ddc)) return connector_status_connected;
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