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Currently the error checking logic in the dp_debug module could
pass zero to PTR_ERR and it causes the below kbot warnings:
drivers/gpu/drm/msm/dp/dp_debug.c:378 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:387 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:396 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:405 dp_debug_init()
warn: passing zero to 'PTR_ERR'
Debugfs functions are not supposed to be checked in the normal
case so delete this code. Also it silences the above Smatch
warnings that we're checking for NULL when these functions only
return error pointers.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-3-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Fix an incorrect NULL check reported by kbot in the MSM DP driver
smatch warnings:
drivers/gpu/drm/msm/dp/dp_hpd.c:37 dp_hpd_connect()
error: we previously assumed 'hpd_priv->dp_cb' could be null
(see line 37)
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-2-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Fix a couple of indentation warnings reported by
kbot across MSM DP driver:
New smatch warnings:
drivers/gpu/drm/msm/dp/dp_debug.c:229 dp_test_data_show()
warn: inconsistent indenting
drivers/gpu/drm/msm/dp/dp_power.c:203 dp_power_clk_enable()
warn: inconsistent indenting
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-1-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
In commit 9fc418430c65 ("drm/msm/dp: unplug interrupt missed after
irq_hpd handler") we dropped a reset of the aux phy during aux transfers
because resetting the phy during active communication caused us to miss
an hpd irq in some cases. Unfortunately, we also dropped the part of the
code that changes the aux phy tuning when an aux transfer fails due to a
timeout. That part of the code was calling into the phy driver to
reconfigure the aux TX swing controls, working around poor channel
quality. Let's restore this phy setting code so that aux channel
communication is more reliable.
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Fixes: 9fc418430c65 ("drm/msm/dp: unplug interrupt missed after irq_hpd handler")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
* a6xx speedbin support
* a508, a509, a512 support
* various a5xx fixes
* various dpu fixes
* qseed3lite support for sm8250
* dsi fix for msm8994
* mdp5 fix for framerate bug with cmd mode panels
* a6xx GMU OOB race fixes that were showing up in CI
* various addition and removal of semicolons
* gem submit fix for legacy userspace relocs path
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvh3tvLz_xtk=4x9xUfo2h2s4xkniOvC7HyLO2jrXnXkw@mail.gmail.com
A missing semicolon here causes my external display to stop working.
Indeed, missing the semicolon on the return statement leads to
dp_panel_update_tu_timings() not existing because the compiler thinks
it's part of the return statement of a void function, so it must not be
important.
$ ./scripts/bloat-o-meter before.o after.o
add/remove: 1/1 grow/shrink: 0/1 up/down: 7400/-7540 (-140)
Function old new delta
dp_panel_update_tu_timings - 7400 +7400
_dp_ctrl_calc_tu.constprop 18024 17900 -124
dp_panel_update_tu_timings.constprop 7416 - -7416
Total: Before=54440, After=54300, chg -0.26%
Add a semicolon so this function works like it used to.
Cc: Sean Paul <sean@poorly.run>
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: freedreno@lists.freedesktop.org
Cc: Lee Jones <lee.jones@linaro.org>
Fixes: cc9014bf63a4 ("drm/msm/dp/dp_ctrl: Move 'tu' from the stack to the heap")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
DP_SW_RESET is the global SW reset that is used to initialize DP
controller. If DP_SW_RESET executed during connection setup,
two HPD related side effects may occurred,
1) pending HPD interrupts cleared unexpected
2) re start debounce logic which trigger another interrupt
This patch only issue DP_SW_RESET at boot up and pm_resume.
This patch also reinit video_comp before configure dp controller
to avoid missing VIDEO_READY interrupt.
Fixes: 9fc418430c65 ("drm/msm/dp: unplug interrupt missed after irq_hpd handler")
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
remove unneeded variable: "rc".
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
1. Trigger the unplug event in msm_dp_display_disable() to shutdown audio
properly.
2. Reset the completion before signal the disconnect event.
Fixes: 158b9aa74479 ("drm/msm/dp: wait for audio notification before disabling clocks")
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Judy Hsiao <judyhsiao@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
fix semicolon.cocci warnings:
drivers/gpu/drm/msm/dp/dp_ctrl.c:1161:2-3: Unneeded semicolon
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Rob Clark <robdclark@chromium.org>
There is HPD unplug interrupts missed at scenario of an irq_hpd
followed by unplug interrupts with around 10 ms in between.
Since both AUX_SW_RESET and DP_SW_RESET clear pending HPD interrupts,
irq_hpd handler should not issues either aux or sw reset to avoid
following unplug interrupt be cleared accidentally. This patch
also postpone handling of irq_hpd until connected state if it
happened at connection pending state.
Changes in V2:
-- add postpone handling of irq_hpd until connected state
-- check DP_TRAINING_1 instead of DP_TRAINING_NONE
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
- Fix DP vswing settings and handling (Imre, Ville)
- Various display code clean-up (Jani, Ville)
- Various display refactoring, including split out of pps, aux, and fdi (Ja\
ni, Dave)
- Add DG1 missing workarounds (Jose)
- Fix display color conversion (Chris, Ville)
- Try to guess PCH type even without ISA bridge (Zhenyu)
- More backlight refactor (Lyude)
- Support two CSC module on gen11 and later (Lee)
- Async flips for all ilk+ platforms (Ville)
- Clear color support for TGL (RK)
- Add a helper to read data from a GEM object page (Imre)
- VRR/Adaptive Sync Enabling on DP/eDP for TGL+ (Manasi, Ville Aditya)
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Merge tag 'drm-intel-next-2021-01-27' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
- HDCP 2.2 and HDCP 1.4 Gen12 DP MST support (Anshuman)
- Fix DP vswing settings and handling (Imre, Ville)
- Various display code clean-up (Jani, Ville)
- Various display refactoring, including split out of pps, aux, and fdi (Ja\
ni, Dave)
- Add DG1 missing workarounds (Jose)
- Fix display color conversion (Chris, Ville)
- Try to guess PCH type even without ISA bridge (Zhenyu)
- More backlight refactor (Lyude)
- Support two CSC module on gen11 and later (Lee)
- Async flips for all ilk+ platforms (Ville)
- Clear color support for TGL (RK)
- Add a helper to read data from a GEM object page (Imre)
- VRR/Adaptive Sync Enabling on DP/eDP for TGL+ (Manasi, Ville Aditya)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210127140822.GA711686@intel.com
Commit 7c553f8b5a7d ("drm/dp: Revert "drm/dp: Introduce EDID-based
quirks"") removed drm_dp_get_edid_quirks() and changed the signature of
drm_dp_has_quirk() while they were still being used in msm. Fix the
breakage. Functionally, removing the EDID-based quirks has no impact on
msm.
[The above commit was merged to drm-intel-next; make two wrongs a right
by merging this fix through drm-intel-next as well.]
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
References: http://lore.kernel.org/r/20210120105715.4391dd95@canb.auug.org.au
Fixes: 7c553f8b5a7d ("drm/dp: Revert "drm/dp: Introduce EDID-based quirks"")
Cc: Lyude Paul <lyude@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Lyude Paul <lyude@redhat.com>
Tested-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210120110708.32131-1-jani.nikula@intel.com
irq_hpd event can only be executed at connected state. Therefore
irq_hpd event should be postponed if it happened at connection
pending state. This patch also make sure both link rate and lane
are valid before start link training.
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Some usb type-c dongle use irq_hpd request to perform device connection
and disconnection. This patch add handling of both connection and
disconnection are based on the state of hpd_state and sink_count.
Changes in V2:
-- add dp_display_handle_port_ststus_changed()
-- fix kernel test robot complaint
Changes in V3:
-- add encoder_mode_set into struct dp_display_private
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 26b8d66a399e ("drm/msm/dp: promote irq_hpd handle to handle link training correctly")
Tested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
linux/rational.h is included more than once, Remove the one that isn't
necessary.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
'struct tu_algo_data' is huge ~400 Bytes.
Fixes the following W=1 kernel build warning(s):
drivers/gpu/drm/msm/dp/dp_ctrl.c: In function ‘_dp_ctrl_calc_tu.constprop’:
drivers/gpu/drm/msm/dp/dp_ctrl.c:938:1: warning: the frame size of 1184 bytes is larger than 1024 bytes [-Wframe-larger-than=]
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Chandan Uddaraju <chandanu@codeaurora.org>
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
For sinks that do not support audio, there is no need to notify
audio subsystem of the connection event.
This will make sure that audio routes only to the primary display
when connected to such sinks.
changes in v2:
- Added fixes tag
- Removed nested if condition and removed usage of global pointer
Fixes: d13e36d7d222 ("drm/msm/dp: add audio support for Display Port on MSM")
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Some dongles require link training done at irq_hpd request instead
of plugin request. This patch promote irq_hpd handler to handle link
training and setup hpd_state correctly.
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Some dongle will not clear LINK_STATUS_UPDATED bit after
DPCD read which cause link training failed. This patch
just read 6 bytes of DPCD link status from sink and return
without checking LINK_STATUS_UPDATED bit.
Only 8 bits are used to represent link rate at sinker DPCD.
The really link rate is 2.7Mb times the 8 bits value.
For example, 0x0A at DPCD is equal to 2.7Gb (10 * 2.7Mb).
This patch also convert 8 bits value of DPCD to really link
rate to fix worng link rate error during phy compliance test.
Fixes: 6625e2637d93 ("drm/msm/dp: DisplayPort PHY compliance tests fixup")
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
DP compo phy have to be enable to start link training. When
link training failed phy need to be disabled so that next
link traning can be proceed smoothly at next plug in. This
patch de-initialize mainlink to disable phy if link training
failed. This prevent system crash due to
disp_cc_mdss_dp_link_intf_clk stuck at "off" state. This patch
also perform checking power_on flag at dp_display_enable() and
dp_display_disable() to avoid crashing when unplug cable while
display is off.
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Connection state is not set correctly happen when either failure of link
train due to cable unplugged in the middle of aux channel reading or
cable plugged in while in suspended state. This patch fixes these problems.
This patch also replace ST_SUSPEND_PENDING with ST_DISPLAY_OFF.
Changes in V2:
-- Add more information to commit message.
Changes in V3:
-- change base
Changes in V4:
-- add Fixes tag
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
During suspend, dp host controller and hpd block are disabled due to
both ahb and aux clock are disabled. Therefore hpd plug/unplug interrupts
will not be generated. At dp_pm_resume(), reinitialize both dp host
controller and hpd block so that hpd plug/unplug interrupts will be
generated and handled by driver so that hpd connection state is updated
correctly. This patch will fix link training flaky issues.
Changes in v2:
-- use container_of to cast correct dp_display_private pointer
at both dp_pm_suspend() and dp_pm_resume().
Changes in v3:
-- replace hpd_state atomic_t with u32
Changes in v4
-- call dp_display_host_deinit() at dp_pm_suspend()
-- call dp_display_host_init() at msm_dp_display_enable()
-- fix phy->init_count unbalance which causes link training failed
Changes in v5
-- add Fixes tag
Fixes: 8ede2ecc3e5e (drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets)
Tested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Set link rate by using OPP set rate api so that CX level will be set
accordingly based on the link rate.
Changes in v2:
-- remove dev from dp_ctrl_put() parameters
-- Add more information to commit message
Changes in v3:
-- return when dev_pm_opp_set_clkname() failed
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Bandwidth code was being used as test link rate. Fix this by converting
bandwidth code to test link rate
Do not reset voltage and pre-emphasis level during IRQ HPD attention
interrupt. Also fix pre-emphasis parsing during test link status process
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Fixes: 8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Fix the incorrect function prototype for dp_debug_get()
in the dp_debug module to address compilation warning.
Also add prototype for msm_dp_debugfs_init() for fixing compilation
issue with other defconfigs.
changes in v2:
- add prototype for msm_dp_debugfs_init()
Fixes: f913454aae8e ("drm/msm/dp: move debugfs node to /sys/kernel/debug/dri/*/")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
We shouldn't be waiting for an event here with a timeout of 100ms when
we're not in the 'timeout' arm of the if condition. Instead we should be
sleeping in the interruptible state (S) until something happens and we
need to wakeup. Right now this kthread is running almost all the time
because it sleeps for 100ms, wakes up, sees there's nothing to do, and
then starts the process all over again. Looking at top it shows up in
the D state (uninterruptible) because it uses wait_event_timeout(). FIx
this up.
Cc: Tanmay Shah <tanmay@codeaurora.org>
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Reported-by: Douglas Anderson <dianders@chromium.org>
Fixes: 8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Make the necessary changes to the DP driver to use the qmp phy from the
common phy framework instead of rolling our own in the drm subsystem.
This also removes the PLL code and adds proper includes so things build.
Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Cc: Chandan Uddaraju <chandanu@codeaurora.org>
Cc: Vara Reddy <varar@codeaurora.org>
Cc: Tanmay Shah <tanmay@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Manu Gautam <mgautam@codeaurora.org>
Cc: Sandeep Maheswaram <sanm@codeaurora.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jonathan Marek <jonathan@marek.ca>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Rob Clark <robdclark@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
No need to fix the number of resolutions to one during the video
pattern CTS test. The userspace test client will handle both
the hotplug as well as picking the right resolution for the test.
Changes in v2: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Add the debugfs nodes needed for the video pattern
compliance tests to MSM DP driver.
Changes in v2: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Move the MSM DP debugfs node from /sys/kernel/debug/drm_dp
to /sys/kernel/debug/dri/*/ as required for video pattern
compliance test suite.
Changes in v2: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
To prepare the MSM DP driver for running video pattern
compliance tests introduce debugfs module for it.
Changes in v2: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
In the current implementation, there is a very small window for
the audio side to safely signal the hdmi_code_shutdown() before
the clocks are disabled.
Add some synchronization between the DP display and DP audio module
to safely disable the clocks to avoid unclocked access from audio
side.
In addition, audio side can open the sound card even if DP monitor
is not connected. Avoid programming hardware registers in this case
and bail out early.
Changes in v4:
- removed some leftover prints
Changes in v5:
- fix crash when user tries to play audio in suspended
state
Changes in v6:
- rebased on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signal the hotplug disconnect event to the audio side in the
event handler so that they are notified earlier and have more
time to process the disconnect event.
Changes in v2: none
Changes in v3: none
Changes in v4: rebase on top of latest patchset of dependency
Changes in v5: rebase on top of latest patchset of dependency
Changes in v6: none
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Add the hook_plugged_cb op for the MSM DP driver to signal connect
and disconnect events to the hdmi-codec driver which in-turn shall
notify the audio subsystem to start a new or teardown an existing
session.
Changes in v2: none
Changes in v3: none
Changes in v4: rebase on top of latest patchset of dependency
Changes in v5: rebase on top of latest patchset of dependency
Changes in v6: none
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Introduce audio support for Display Port on MSM chipsets.
This change integrates DP audio sub-module with the main
Display Port platform driver.
In addition, this change leverages hdmi_codec_ops to expose
the operations to the audio driver.
Changes in v2: fix up a compilation issue on drm-next branch
Changes in v3: none
Changes in v4: none
Changes in v5: none
Changes in v6: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Store the dp_display in the platform driver data instead of the
dp_display_private.
This is required to allow other sub-modules to reuse the platform
driver data.
Changes in v3: none
Changes in v4: none
Changes in v5: none
Changes in v6: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
add event thread to execute events serially from event queue. Also
timeout mode is supported which allow an event be deferred to be
executed at later time. Both link and phy compliant tests had been
done successfully.
Changes in v2:
-- Fix potential deadlock by removing redundant connect_mutex
-- Check and enable link clock during modeset
-- Drop unused code and fix function prototypes.
-- set sink power to normal operation state (D0) before DPCD read
Changes in v3:
-- push idle pattern at main link before timing generator off
-- add timeout handles for both connect and disconnect
Changes in v4:
-- add ST_SUSPEND_PENDING to handles suspend/modeset test operations
-- clear dp phy aux interrupt status when ERR_DPPHY_AUX error
-- send segment addr during edid read
-- clear bpp depth before MISC register write
Changes in v5:
-- add ST_SUSPENDED to fix crash at resume
Changes in v6:
-- at msm_dp_display_enable() do not return until resume_done to avoid
kms commit timeout
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Configure HPD registers in DP controller and
enable HPD interrupt.
Add interrupt to handle HPD connect and disconnect events.
Changes in v8: None
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Add the needed DP PLL specific files to support
display port interface on msm targets.
The DP driver calls the DP PLL driver registration.
The DP driver sets the link and pixel clock sources.
Changes in v2:
-- Update copyright markings on all relevant files.
-- Use DRM_DEBUG_DP for debug msgs.
Changes in v4:
-- Update the DP link clock provider names
Changes in V5:
-- Addressed comments from Stephen Boyd, Rob clark.
Changes in V6:
-- Remove PLL as separate driver and include PLL as DP module
-- Remove redundant clock parsing from PLL module and make DP as
clock provider
-- Map USB3 DPCOM and PHY IO using hardcoded register address and
move mapping form parser to PLL module
-- Access DP PHY modules from same base address using offsets instead of
deriving base address of individual module from device tree.
-- Remove dp_pll_10nm_util.c and include its functionality in
dp_pll_10nm.c
-- Introduce new data structures private to PLL module
Changes in v7:
-- Remove DRM_MSM_DP_PLL config from Makefile and Kconfig
-- Remove set_parent from determin_rate API
-- Remove phy_pll_vco_div_clk from parent list
-- Remove flag CLK_DIVIDER_ONE_BASED
-- Remove redundant cell-index property parsing
Changes in v8:
-- Unregister hardware clocks during driver cleanup
Changes in v9:
-- Remove redundant Kconfig option DRM_MSM_DP_10NM_PLL
Changes in v10:
-- Limit 10nm PLL function scope
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
Signed-off-by: Vara Reddy <varar@codeaurora.org>
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Add the needed displayPort files to enable DP driver
on msm target.
"dp_display" module is the main module that calls into
other sub-modules. "dp_drm" file represents the interface
between DRM framework and DP driver.
Changes in v12:
-- Add support of pm ops in display port driver
-- Clear bpp depth bits before writing to MISC register
-- Fix edid read
Previous Change log:
https://lkml.kernel.org/lkml/20200818051137.21478-3-tanmay@codeaurora.org/
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
Signed-off-by: Vara Reddy <varar@codeaurora.org>
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Co-developed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Co-developed-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Co-developed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Co-developed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
