drm/msm: Fix shutdown

When rebooting on my sc7280-herobrine based device, I got a
crash. Upon debugging, I found that I was in msm_drv_shutdown() and my
"pdev" was the one associated with mdss_probe().

From source, I found that mdss_probe() has the line:
  platform_set_drvdata(pdev, mdss);
...where "mdss" is of type "struct msm_mdss *".

Also from source, I saw that in msm_drv_shutdown() we have the line:
  struct msm_drm_private *priv = platform_get_drvdata(pdev);

This is a mismatch and is the root of the problem.

Further digging made it apparent that msm_drv_shutdown() is only
supposed to be used for parts of the msm display framework that also
call msm_drv_probe() but mdss_probe() doesn't call
msm_drv_probe(). Let's remove the shutdown functon from msm_mdss.c.

Digging a little further, code inspection found that two drivers that
use msm_drv_probe() weren't calling msm_drv_shutdown(). Let's add it
to them.

Fixes: 6874f48bb8b0 ("drm/msm: make mdp5/dpu devices master components")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/484975/
Link: https://lore.kernel.org/r/20220504163900.v2.1.Iaebd35e60160fc0f2a50fac3a0bf3b298c0637c8@changeid
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: return an error pointer in msm_gem_prime_get_sg_table()

The msm_gem_prime_get_sg_table() needs to return error pointers on
error.  This is called from drm_gem_map_dma_buf() and returning a
NULL will lead to a crash in that function.

Fixes: ac45146733b0 ("drm/msm: fix msm_gem_prime_get_sg_table()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/485023/
Link: https://lore.kernel.org/r/YnOmtS5tfENywR9m@kili
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected

There is a possibility for mdp5_get_global_state to return
-EDEADLK when acquiring the modeset lock, but currently global_state in
mdp5_mixer_release doesn't check for if an error is returned.

To avoid a NULL dereference error, let's have mdp5_mixer_release
check if an error is returned and propagate that error.

Reported-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Fixes: 7907a0d77cb4 ("drm/msm/mdp5: Use the new private_obj state")
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/485181/
Link: https://lore.kernel.org/r/20220505214051.155-2-quic_jesszhan@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected

mdp5_get_global_state runs the risk of hitting a -EDEADLK when acquiring
the modeset lock, but currently mdp5_pipe_release doesn't check for if
an error is returned. Because of this, there is a possibility of
mdp5_pipe_release hitting a NULL dereference error.

To avoid this, let's have mdp5_pipe_release check if
mdp5_get_global_state returns an error and propogate that error.

Changes since v1:
- Separated declaration and initialization of *new_state to avoid
  compiler warning
- Fixed some spelling mistakes in commit message

Changes since v2:
- Return 0 in case where hwpipe is NULL as this is considered normal
  behavior
- Added 2nd patch in series to fix a similar NULL dereference issue in
  mdp5_mixer_release

Reported-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Fixes: 7907a0d77cb4 ("drm/msm/mdp5: Use the new private_obj state")
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/485179/
Link: https://lore.kernel.org/r/20220505214051.155-1-quic_jesszhan@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: fix event thread stuck in wait_event after kthread_stop()

Event thread supposed to exit from its while loop after kthread_stop().
However there may has possibility that event thread is pending in the
middle of wait_event due to condition checking never become true.
To make sure event thread exit its loop after kthread_stop(), this
patch OR kthread_should_stop() into wait_event's condition checking
so that event thread will exit its loop after kernal_stop().

Changes in v2:
--  correct spelling error at commit title

Changes in v3:
-- remove unnecessary parenthesis
-- while(1) to replace while (!kthread_should_stop())

Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: 570d3e5d28db ("drm/msm/dp: stop event kernel thread when DP unbind")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/484576/
Link: https://lore.kernel.org/r/1651595136-24312-1-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: fix address for second DSI PHY on SDM660

Correct a typo in the address of the second DSI PHY in the SDM660 device
config.

Fixes: 694dd304cc29 ("drm/msm/dsi: Add phy configuration for SDM630/636/660")
Cc: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/484697/
Link: https://lore.kernel.org/r/20220503204340.935532-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp: dpu1: Properly sort qcm2290_dpu_caps

Due to MSM8998 support having been stuck in review for so long,
another struct was added nearby, which confused git and resulted
in the definitions not being sorted alphabetically. Fix it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/484296/
Link: https://lore.kernel.org/r/20220430161529.605843-3-konrad.dybcio@somainline.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: avoid clearing hw interrupts if hw_intr is null during drm uninit

If edp modeset init is failed due to panel being not ready and
probe defers during drm bind, avoid clearing irqs and dereference
hw_intr when hw_intr is null.

BUG: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

Call trace:
 dpu_core_irq_uninstall+0x50/0xb0
 dpu_irq_uninstall+0x18/0x24
 msm_drm_uninit+0xd8/0x16c
 msm_drm_bind+0x580/0x5fc
 try_to_bring_up_master+0x168/0x1c0
 __component_add+0xb4/0x178
 component_add+0x1c/0x28
 dp_display_probe+0x38c/0x400
 platform_probe+0xb0/0xd0
 really_probe+0xcc/0x2c8
 __driver_probe_device+0xbc/0xe8
 driver_probe_device+0x48/0xf0
 __device_attach_driver+0xa0/0xc8
 bus_for_each_drv+0x8c/0xd8
 __device_attach+0xc4/0x150
 device_initial_probe+0x1c/0x28

Changes in V2:
- Update commit message and coreect fixes tag.

Fixes: f25f656608e3 ("drm/msm/dpu: merge struct dpu_irq into struct dpu_hw_intr")
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/484430/
Link: https://lore.kernel.org/r/1651509846-4842-1-git-send-email-quic_vpolimer@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: don't access mode pointer before it is set

Move the initializer for the mode variable to the declaration point to
remove unitialized variable access from the DEBUG_DPU macro. This fixes
the following warning:

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c:250:37: note: initialize the variable 'mode' to silence this warning

Fixes: d7d0e73f7de3 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/484346/
Link: https://lore.kernel.org/r/20220502082420.48409-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add missing break statement for update_pending_flush_wb()

Add missing break statement for dpu_hw_ctl_update_pending_flush_wb().
Otherwise this leads to below build warning.

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c:273:2:
warning: unannotated fall-through between switch labels
           default:
           ^
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c:273:2:
note: insert 'break;' to avoid fall-through
           default:
           ^
           break;
1 warning generated.

Fixes: 6d084806c8c1 ("drm/msm/dpu: add changes to support writeback in hw_ctl")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/484337/
Link: https://lore.kernel.org/r/1651469981-21469-1-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: Fix null pointer dereferences without iommu

Check if 'aspace' is set before using it as it will stay null without
IOMMU, such as on msm8974.

Fixes: bc2112583a0b ("drm/msm/gpu: Track global faults per address-space")
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Link: https://lore.kernel.org/r/20220421203455.313523-1-luca@z3ntu.xyz
Signed-off-by: Rob Clark <robdclark@chromium.org>

drm/msm: drop old eDP block support (again)

The msm driver has dropped support for older eDP block. However the
merge conflict in the commit 4ce2ca4b374a ("drm/msm: Fix include
statements for DisplayPort") was resolved incorrectly and two files were
left in place. Drop them now (again).

Fixes: 4ce2ca4b374a ("drm/msm: Fix include statements for DisplayPort")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/484307/
Link: https://lore.kernel.org/r/20220430175747.3818137-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: add missing include to msm_drv.c

Add explicit include of drm_bridge.h to the msm_drv.c to fix the
following warning:

drivers/gpu/drm/msm/msm_drv.c:236:17: error: implicit declaration of function 'drm_bridge_remove'; did you mean 'drm_bridge_detach'? [-Werror=implicit-function-declaration]

Fixes: d28ea556267c ("drm/msm: properly add and remove internal bridges")
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/484310/
Link: https://lore.kernel.org/r/20220430180917.3819294-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: use RMW cycles in dsi_update_dsc_timing

The downstream uses read-modify-write for updating command mode
compression registers. Let's follow this approach. This also fixes the
following warning:

drivers/gpu/drm/msm/dsi/dsi_host.c:918:23: warning: variable 'reg_ctrl' set but not used [-Wunused-but-set-variable]

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 08802f515c3c ("drm/msm/dsi: Add support for DSC configuration")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/484305/
Link: https://lore.kernel.org/r/20220430175533.3817792-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: Use indexed array initializer to prevent mismatches

While there's a comment pointing from dpu_intr_set to dpu_hw_intr_reg
and vice-versa, an array initializer using indices makes it so that the
indices between the enum and array cannot possibly get out of sync even
if they're accidentially ordered wrongly.  It is still useful to keep
the comment to be made aware where the register offset mapping resides
while looking at dpu_hw_intr_reg.

Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/476358/
Link: https://lore.kernel.org/r/20220226194633.204501-1-marijn.suijten@somainline.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: Clean up CRC debug logs

Currently, dpu_hw_lm_collect_misr returns EINVAL if CRC is disabled.
This causes a lot of spam in the DRM debug logs as it's called for every
vblank.

Instead of returning EINVAL when CRC is disabled in
dpu_hw_lm_collect_misr, let's return ENODATA and add an extra ENODATA check
before the debug log in dpu_crtc_get_crc.

Changes since V1:
- Added reported-by and suggested-by tags

Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Suggested-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Tested-by: Jessica Zhang <quic_jesszhan@quicinc.com> # RB5 (qrb5165)
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/484274/
Link: https://lore.kernel.org/r/20220430005210.339-1-quic_jesszhan@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table during probe

Set mdp clock to max clock rate during probe/bind sequence from the
opp table so that rails are not at undetermined state. Since we do not
know what will be the rate set in boot loader, it would be ideal to
vote at max frequency. There could be a firmware display programmed
in bootloader and we want to transition it to kernel without underflowing.
The clock will be scaled down later when framework sends an update.

Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/479090/
Link: https://lore.kernel.org/r/1647919631-14447-2-git-send-email-quic_vpolimer@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: remove unused refcount for encoder_phys_wb

Remove the unused local variable refcount for encoder_phys_wb
as the one part of wb_enc is used directly.

changes in v2:
- remove usage of ret variable also
- remove the if (ret) code as it was dead-code anyway

Fixes: d7d0e73f7de3 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483919/
Link: https://lore.kernel.org/r/1651169759-29760-1-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: fix returnvar.cocci warning

Fix the following coccicheck warning:
drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c:24:5-8: Unneeded variable:
"ret". Return "0" on line 75.

Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483328/
Link: https://lore.kernel.org/r/20220425122223.7415-1-guozhengkui@vivo.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm: msm: fix error check return value of irq_of_parse_and_map()

The irq_of_parse_and_map() function returns 0 on failure, and does not
return an negative value.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483175/
Link: https://lore.kernel.org/r/20220424031959.3172406-1-lv.ruyi@zte.com.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/mdp5: Eliminate useless code

Since mdp5_state is initialized twice at the same time, so
we make code simple and easy to understand by delete one.

Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/482500/
Link: https://lore.kernel.org/r/1650348980-19050-1-git-send-email-baihaowen@meizu.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/hdmi: fix error check return value of irq_of_parse_and_map()

The irq_of_parse_and_map() function returns 0 on failure, and does not
return a negative value anyhow, so never enter this conditional branch.

Fixes: f6a8eaca0ea1 ("drm/msm/mdp5: use irqdomains")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483294/
Link: https://lore.kernel.org/r/20220425091831.3500487-1-lv.ruyi@zte.com.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/hdmi: check return value after calling platform_get_resource_byname()

It will cause null-ptr-deref if platform_get_resource_byname() returns NULL,
we need check the return value.

Fixes: c6a57a50ad56 ("drm/msm/hdmi: add hdmi hdcp support (V3)")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/482992/
Link: https://lore.kernel.org/r/20220422032227.2991553-1-yangyingliang@huawei.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: fix error checks and return values for DSI xmit functions

As noticed by Dan ([1] an the followup thread) there are multiple issues
with the return values for MSM DSI command transmission callback. In
the error case it can easily return a positive value when it should
have returned a proper error code.

This commits attempts to fix these issues both in TX and in RX paths.

[1]: https://lore.kernel.org/linux-arm-msm/20211001123617.GH2283@kili/

Fixes: a689554ba6ed ("drm/msm: Initial add DSI connector support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Tested-by: Marijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/480501/
Link: https://lore.kernel.org/r/20220401231104.967193-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: do not stop transmitting phy test pattern during DP phy compliance test

At normal operation, transmit phy test pattern has to be terminated before
DP controller switch to video ready state. However during phy compliance
testing, transmit phy test pattern should not be terminated until end of
compliance test which usually indicated by unplugged interrupt.

Only stop sending the train pattern in dp_ctrl_on_stream() if we're not
doing compliance testing. We also no longer reset 'p_level' and
'v_level' within dp_ctrl_on_link() due to both 'p_level' and 'v_level'
are acquired from link status at previous dpcd read and we like to use
those level to start link training.

Changes in v2:
-- add more details commit text
-- correct Fixes

Changes in v3:
-- drop unnecessary braces

Fixes: 2e0adc765d88 ("drm/msm/dp: do not end dp link training until video is ready")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483564/
Link: https://lore.kernel.org/r/1650995939-28467-3-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: reset DP controller before transmit phy test pattern

DP controller state can not switch from video ready state to
transmit phy pattern state at run time. DP mainlink has to be
teared down followed by reset controller to default state to have
DP controller switch to transmit phy test pattern state and start
generate specified phy test pattern to sinker once main link setup
again.

Changes in v2:
-- correct Fixes's commit id

Fixes: 52352fe2f866 ("drm/msm/dp: use dp_ctrl_off_link_stream during PHY compliance test run")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483563/
Link: https://lore.kernel.org/r/1650995939-28467-2-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: Support the eDP modes given by panel

The eDP controller does not have a reliable way keep panel
powered on to read the sink capabilities. So, the controller
driver cannot validate if a mode can be supported by the
source. We will rely on the panel driver to populate only
the supported modes for now.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483313/
Link: https://lore.kernel.org/r/1650887072-16652-5-git-send-email-quic_sbillaka@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: wait for hpd high before aux transaction

The source device should ensure the sink is ready before proceeding to
read the sink capability or perform any aux transactions. The sink
will indicate its readiness by asserting the HPD line. The controller
driver needs to wait for the hpd line to be asserted by the sink before
it performs any aux transactions.

The eDP sink is assumed to be always connected. It needs power from the
source and its HPD line will be asserted only after the panel is powered
on. The panel power will be enabled from the panel-edp driver and only
after that, the hpd line will be asserted.

Whereas for DP, the sink can be hotplugged and unplugged anytime. The hpd
line gets asserted to indicate the sink is connected and ready. Hence
there is no need to wait for the hpd line to be asserted for a DP sink.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483312/
Link: https://lore.kernel.org/r/1650887072-16652-4-git-send-email-quic_sbillaka@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: Support only IRQ_HPD and REPLUG interrupts for eDP

The panel-edp enables the eDP panel power during probe, get_modes
and pre-enable. The eDP connect and disconnect interrupts for the eDP/DP
controller are directly dependent on panel power. As eDP display can be
assumed as always connected, the controller driver can skip the eDP
connect and disconnect interrupts. Any disruption in the link status
will be indicated via the IRQ_HPD interrupts.

So, the eDP controller driver can just enable the IRQ_HPD and replug
interrupts. The DP controller driver still needs to enable all the
interrupts.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483310/
Link: https://lore.kernel.org/r/1650887072-16652-3-git-send-email-quic_sbillaka@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: select DRM_DP_AUX_BUS for the AUX bus support

Add missing dependency on the AUX bus implementation.

Fixes: c3bf8e21b38a ("drm/msm/dp: Add eDP support via aux_bus")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483406/
Link: https://lore.kernel.org/r/20220426004128.2832555-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: Add eDP support via aux_bus

This patch adds support for generic eDP sink through aux_bus. The eDP/DP
controller driver should support aux transactions originating from the
panel-edp driver and hence should be initialized and ready.

The panel bridge supporting the panel should be ready before the bridge
connector is initialized. The generic panel probe needs the controller
resources to be enabled to support the aux transactions originating from
the panel probe.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483307/
Link: https://lore.kernel.org/r/1650887072-16652-2-git-send-email-quic_sbillaka@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: tear down main link at unplug handle immediately

Two stages are required to setup up main link to be ready to transmit
video stream.
Stage 1: dp_hpd_plug_handle() perform link training to set up main link
stage 2: user space framework (msm_dp_display_enable()) to enable pixel
clock and transfer main link to video ready state.

At current implementation, when dongle unplugged dp_hdp_unplug_handle()
has to wait until stage 2 completed before it can send link down uevent
to user space framework to disable pixel clock followed by tearing down
main link.  This introduce unnecessary latency if dongle unplugged happen
after stage 1 and before stage 2. It also has possibility leave main link
stay at ready state after dongle unplugged if framework does not response
to link down uevent notification. This will prevent next dongle plug in
from working. This scenario could possibly happen when dongle unplug while
system in the middle of suspending.

This patch allow unplug handle to tear down main link and notify
framework link down immediately if dongle unplugged happen after
stage 1 and before stage 2. With this approach, dp driver is much
more resilient to any different scenarios. Also redundant both
dp_connect_pending_timeout() and dp_disconnect_pending_timeout()
are removed to reduce logic complexity.

Changes in V2:
-- return -EINVAL at msm_dp_display_enable() if not in correct state
-- replace ST_CONNECT_PENDING with ST_MAINLINK_READY

Fixes: 8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483391/
Link: https://lore.kernel.org/r/1650927382-22461-1-git-send-email-quic_khsieh@quicinc.com
[DB: fixed return values due to conversion to function merge]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: fix error check return value of irq_of_parse_and_map()

The irq_of_parse_and_map() function returns 0 on failure, and does not
return an negative value.

Fixes: 8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483176/
Link: https://lore.kernel.org/r/20220424032418.3173632-1-lv.ruyi@zte.com.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: stop event kernel thread when DP unbind

Current DP driver implementation, event thread is kept running
after DP display is unbind. This patch fix this problem by disabling
DP irq and stop event thread to exit gracefully at dp_display_unbind().

Changes in v2:
-- start event thread at dp_display_bind()

Changes in v3:
-- disable all HDP interrupts at unbind
-- replace dp_hpd_event_setup() with dp_hpd_event_thread_start()
-- replace dp_hpd_event_stop() with dp_hpd_event_thread_stop()
-- move init_waitqueue_head(&dp->event_q) to probe()
-- move spin_lock_init(&dp->event_lock) to probe()

Changes in v4:
-- relocate both dp_display_bind() and dp_display_unbind() to bottom of file

Changes in v5:
-- cancel relocation of both dp_display_bind() and dp_display_unbind()

Changes in v6:
-- move empty event q to dp_event_thread_start()

Changes in v7:
-- call ktheread_stop() directly instead of dp_hpd_event_thread_stop() function

Changes in v8:
-- return error immediately if audio registration failed.

Changes in v9:
-- return error immediately if event thread create failed.

Changes in v10:
-- delete extra  DRM_ERROR("failed to create DP event thread\n");

Fixes: 8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/482399/
Link: https://lore.kernel.org/r/1650318988-17580-1-git-send-email-quic_khsieh@quicinc.com
[DB: fixed Fixes tag]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: remove max_pclk_khz field from dp_panel/dp_display

Since the last commit, the max_pclk_khz became constant, it's set to
DP_MAX_PIXEL_CLK_KHZ and never changed afterwards. Remove it completely
and use DP_MAX_PIXEL_CLK_KHZ directly.

Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/480139/
Link: https://lore.kernel.org/r/20220330223008.649274-4-dmitry.baryshkov@linaro.org
[DB: applied a fix to follow connector->bridge conversion]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: simplify dp_connector_get_modes()

Since dp_panel_get_modes() handling for dp_mode was removed,
dp_display_get_modes also doesn't change the passed dp_mode, drop the
unused dp_mode variable being allocated unused and then freed.

Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/480137/
Link: https://lore.kernel.org/r/20220330223008.649274-3-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: drop dp_mode argument from dp_panel_get_modes()

Since the commit ab205927592b ("drm/msm/dp: remove mode hard-coding in
case of DP CTS") the function dp_panel_get_modes() doesn't use (or fill)
the dp_mode argument. Drop it completely.

Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/480138/
Link: https://lore.kernel.org/r/20220330223008.649274-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: replace DRM_DEBUG_DP marco with drm_dbg_dp

Since DRM_DEBUG_DP is deprecated in favor of drm_dbg_dp(NULL, ...),
this patch replace all DRM_DEBUG_DP with drm_dbg_dp().

Changes in v4:
-- replace (strucr drm_dev *)NULL with drm_dev

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/474870/
Link: https://lore.kernel.org/r/1645122930-23863-4-git-send-email-quic_khsieh@quicinc.com
[DB: fixed compilation of dp_bridge_detect() caused by previous patch]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: remove extra wrappers and public functions

dp_bridge's functions are thin wrappers around the msm_dp_display_*
family. Squash dp_bridge callbacks into respective msm_dp_display
functions, removing the latter functions from public space.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/473858/
Link: https://lore.kernel.org/r/20220211224006.1797846-6-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: replace dp_connector with drm_bridge_connector

There is little point in having both connector and root bridge
implementation in the same driver. Move connector's functionality to the
bridge to let next bridge in chain to override it.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/473854/
Link: https://lore.kernel.org/r/20220211224006.1797846-5-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add wb_idx to DRM traces in dpu_encoder

Change the DRM traces to include both the intf_mode
and wb_idx similar to the DRM prints in the previous change.

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483528/
Link: https://lore.kernel.org/r/1650984096-9964-20-git-send-email-quic_abhinavk@quicinc.com
[DB: fixed indentation and added wb_idx to the dpu_enc_trigger_flush's TP_ARGS]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add wb_idx to existing DRM prints in dpu_encoder

Add wb_idx to existing DRM prints in dpu_encoder and also
print the intf_mode so that its clear that for any INTF_CMD/VID
there will be a valid intf_idx and any INTF_WB_* there will be a
valid wb_idx.

Update the debugfs to add the same information. Here is a sample
output with this change:

root:/sys/kernel/debug/dri/0/encoder31# cat status
intf:1  wb:-1  vsync: 31  underrun: 0    mode: INTF_MODE_VIDEO
root:/sys/kernel/debug/dri/0/encoder33# cat status
intf:-1  wb:2  vsync:  7  underrun: 0    mode: INTF_MODE_WB_LINE

Also remove DPU_DEBUG_PHYS macros as its unused because the
respective dpu_encoder_phys_* files have their own macros.

changes in v2:
- use switch case instead of if/else-if for get_intf_type

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483530/
Link: https://lore.kernel.org/r/1650984096-9964-19-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add writeback blocks to the display snapshot

Add writeback block information while capturing the display
snapshot.

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483524/
Link: https://lore.kernel.org/r/1650984096-9964-18-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: gracefully handle null fb commits for writeback

kms_writeback test cases also verify with a null fb for the
writeback connector job. In addition there are also other
commit paths which can result in kickoffs without a valid
framebuffer like while closing the fb which results in the
callback to drm_atomic_helper_dirtyfb() which internally
triggers a commit.

Add protection in the dpu driver to ensure that commits for
writeback encoders without a valid fb are gracefully skipped.

changes in v2:
- rename dpu_encoder_has_valid_fb to dpu_encoder_is_valid_for_commit

changes in v3:
- none

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483522/
Link: https://lore.kernel.org/r/1650984096-9964-17-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: initialize dpu encoder and connector for writeback

Initialize dpu encoder and connector for writeback if the
target supports it in the catalog.

changes in v2:
- start initialing the encoder for writeback since we
have migrated to using drm_writeback_connector_init_with_encoder()
- instead of checking for WB_2 inside _dpu_kms_initialize_writeback
call it only when its WB_2
- rebase on tip of msm-next and remove usage of priv->encoders

changes in v3:
- none

changes in v4:
- fix copyright years order

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483526/
Link: https://lore.kernel.org/r/1650984096-9964-16-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add the writeback connector layer

Introduce the dpu_writeback module which serves as the
interface between dpu operations and the drm_writeback.

This module manages the connector related operations for
dpu writeback.

changes in v2:
- start using drm_writeback_connector_init_with_encoder()
- drop unnecessary arguments from dpu_writeback_init()
- rebase on msm-next tip and remove usage of priv->connectors

changes in v3:
- none

changes in v4:
- none

changes in v5:
- store the drm_enc in the dpu_wb_conn to be used while
  using dpu_encoder APIs

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483520/
Link: https://lore.kernel.org/r/1650984096-9964-15-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback

Introduce the dpu_encoder_phys_* for the writeback interface
to handle writeback specific hardware programming.

changes in v4:
- squash the encoder_phys_wb bits from [1]
- since its a trivial change of a previously acked change
  preserving the ack

[1] https://patchwork.freedesktop.org/patch/483099/?series=102964&rev=2

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483532/
Link: https://lore.kernel.org/r/1650984096-9964-14-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: move _dpu_plane_get_qos_lut to dpu_hw_util file

_dpu_plane_get_qos_lut() is not specific to just dpu_plane.
It can take any fill level and return the LUT matching it.
This can be used even for other modules like dpu_writeback.

Move _dpu_plane_get_qos_lut() to the common dpu_hw_util file
and rename it to _dpu_hw_get_qos_lut().

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483518/
Link: https://lore.kernel.org/r/1650984096-9964-13-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add encoder operations to prepare/cleanup wb job

add dpu encoder APIs to prepare and cleanup writeback job
for the writeback encoder. These shall be invoked from the
prepare_wb_job/cleanup_wb_job hooks of the drm_writeback
framework.

changes in v3:
- none

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483516/
Link: https://lore.kernel.org/r/1650984096-9964-12-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: make changes to dpu_encoder to support virtual encoder

Make changes to dpu_encoder to support virtual encoder needed
to support writeback for dpu.

changes in v4:
- squash dpu_encoder pieces from [1]

changes in v5:
- none

changes in v6:
- fix the comment about intf_idx and wb_idx
- add the condition for valid phys_enc with intf_idx
  and wb_idx

[1] https://patchwork.freedesktop.org/patch/483099/?series=102964&rev=2

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483514/
Link: https://lore.kernel.org/r/1650984096-9964-11-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add an API to reset the encoder related hw blocks

Add an API to reset the encoder related hw blocks to ensure
a proper teardown of the pipeline. At the moment this is being
used only for the writeback encoder but eventually we can start
using this for all interfaces.

changes in v4:
- none

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483512/
Link: https://lore.kernel.org/r/1650984096-9964-10-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add changes to support writeback in hw_ctl

Add changes to support writeback module in the dpu_hw_ctl
interface.

changes in v4:
- fix the copyright year order

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483507/
Link: https://lore.kernel.org/r/1650984096-9964-9-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add writeback blocks to DPU RM

Add writeback blocks to DPU resource manager so that
the encoders can directly request them through RM.

changes in v4:
- absorb dpu_rm.h header change from [1]
- since its a trivial change absorbed from an approved
  patch, preserving the previous ack on this

[1] https://patchwork.freedesktop.org/patch/483099/?series=102964&rev=2

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483508/
Link: https://lore.kernel.org/r/1650984096-9964-8-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add dpu_hw_wb abstraction for writeback blocks

Add the dpu_hw_wb abstraction to program registers related to the
writeback block. These will be invoked once all the configuration
is set and ready to be programmed to the registers.

changes in v3:
- start using the common struct dpu_hw_cdp_cfg
- leave a comment about DPU non-DPU_WB_QOS_8LVL chipsets

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483505/
Link: https://lore.kernel.org/r/1650984096-9964-7-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: rename dpu_hw_pipe_cdp_cfg to dpu_hw_cdp_cfg

Rename dpu_hw_pipe_cdp_cfg to dpu_hw_cdp_cfg and move it
to dpu_hw_utils file so that other modules in addition to
SSPP such as writeback can use it as all the fields can
be used by writeback as well.

Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483503/
Link: https://lore.kernel.org/r/1650984096-9964-6-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add reset_intf_cfg operation for dpu_hw_ctl

Add a reset_intf_cfg operation for dpu_hw_ctl to reset the
entire CTL path by disabling each component namely layer mixer,
3d-merge and interface blocks.

changes in v3:
- none

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483502/
Link: https://lore.kernel.org/r/1650984096-9964-5-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: add writeback blocks to the sm8250 DPU catalog

Add writeback blocks to the sm8250 DPU hardware catalog. Other
chipsets support writeback too but add it to sm8250 to prototype
the feature so that it can be easily extended to other chipsets.

changes in v4:
- fix the copyright year order

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483510/
Link: https://lore.kernel.org/r/1650984096-9964-4-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm: introduce drm_writeback_connector_init_with_encoder() API

For vendors drivers which pass an already allocated and
initialized encoder especially for cases where the encoder
hardware is shared OR the writeback encoder shares the resources
with the rest of the display pipeline introduce a new API,
drm_writeback_connector_init_with_encoder() which expects
an initialized encoder as a parameter and only sets up the
writeback connector.

changes in v5:
- fix the encoder doc to indicate that its not valid for
  users of drm_writeback_connector_init_with_encoder()

Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Patchwork: https://patchwork.freedesktop.org/patch/483500/
Link: https://lore.kernel.org/r/1650984096-9964-3-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm: allow passing possible_crtcs to drm_writeback_connector_init()

Clients of drm_writeback_connector_init() initialize the
possible_crtcs and then invoke the call to this API.

To simplify things, allow passing possible_crtcs as a parameter
to drm_writeback_connector_init() and make changes to the
other drm drivers to make them compatible with this change.

changes in v2:
- split the changes according to their functionality

changes in v3:
- allow passing possible_crtcs for existing users of
  drm_writeback_connector_init()
- squash the vendor changes into the same commit so
  that each patch in the series can compile individually

changes in v4:
    - keep only changes related to possible_crtcs
- add line breaks after ARRAY_SIZE
- stop using temporary variables for possible_crtcs

changes in v5:
    - None

changes in v6:
    - None

changes in v7:
- wrap long lines to match the coding style of existing drivers
- Fix indentation and remove parenthesis where not needed
- use u32 instead of uint32_t for possible_crtcs

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Patchwork: https://patchwork.freedesktop.org/patch/483501/
Link: https://lore.kernel.org/r/1650984096-9964-2-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm runtime resume

BUG: Unable to handle kernel paging request at virtual address 006b6b6b6b6b6be3

Call trace:
  dpu_vbif_init_memtypes+0x40/0xb8
  dpu_runtime_resume+0xcc/0x1c0
  pm_generic_runtime_resume+0x30/0x44
  __genpd_runtime_resume+0x68/0x7c
  genpd_runtime_resume+0x134/0x258
  __rpm_callback+0x98/0x138
  rpm_callback+0x30/0x88
  rpm_resume+0x36c/0x49c
  __pm_runtime_resume+0x80/0xb0
  dpu_core_irq_uninstall+0x30/0xb0
  dpu_irq_uninstall+0x18/0x24
  msm_drm_uninit+0xd8/0x16c

Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483255/
Link: https://lore.kernel.org/r/1650857213-30075-1-git-send-email-quic_vpolimer@quicinc.com
[DB: fixed Fixes tag]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: fix error check return value of irq_of_parse_and_map()

The irq_of_parse_and_map() function returns 0 on failure, and does not
return a negative value anyhow, so never enter this conditional branch.

Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/483291/
Link: https://lore.kernel.org/r/20220425090947.3498897-1-lv.ruyi@zte.com.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: Issue MDSS reset during initialization

It's typical for the bootloader to bring up the display for showing a
boot splash or efi framebuffer. But in some cases the kernel driver ends
up only partially configuring (in particular) the DPU, which might
result in e.g. that two different data paths attempts to push data to
the interface - with resulting graphical artifacts.

Naturally the end goal would be to inherit the bootloader's
configuration and provide the user with a glitch free handover from the
boot configuration to a running DPU.

But as implementing seamless transition from the bootloader
configuration to the running OS will be a considerable effort, start by
simply resetting the entire MDSS to its power-on state, to avoid the
partial configuration.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/482796/
Link: https://lore.kernel.org/r/20220421041550.643964-2-bjorn.andersson@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

dt-bindings: display: msm: Add optional resets

Add an optional reference to the MDSS_CORE reset, which when specified
can be used by the implementation to reset the hardware blocks.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/482794/
Link: https://lore.kernel.org/r/20220421041550.643964-1-bjorn.andersson@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: add inline rotation support for sc7280

- Some DPU versions support inline rot90. It is supported only for
limited amount of UBWC formats.
- There are two versions of inline rotators, v1 (present on sm8250 and
sm7250) and v2 (sc7280). These versions differ in the list of supported
formats and in the scaler possibilities.

Co-developed-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/481672/
Link: https://lore.kernel.org/r/1649695021-19132-3-git-send-email-quic_vpolimer@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: add inline function to validate format support

Check if the dpu format is supported or not using dpu_find_format.

Co-developed-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/481670/
Link: https://lore.kernel.org/r/1649695021-19132-2-git-send-email-quic_vpolimer@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: Bind pingpong block to intf on active ctls in cmd encoder

As per the specification of DPU_CTL_ACTIVE_CFG the configuration of
active blocks should be proactively specified, and the pingpong block is
no different.

The downstream display driver [1] confirms this by also calling
bind_pingpong_blk on CTL_ACTIVE_CFG.  Note that this else-if is always
entered, as setup_intf_cfg - unlike this mainline dpu driver that
combines both behind the same function pointer - is left NULL in favour
of using setup_intf_cfg_v1 when CTL_ACTIVE_CFG is set.

This solves continuous timeouts on at least the Qualcomm sm6125 SoC:

    [drm:dpu_encoder_frame_done_timeout:2091] [dpu error]enc31 frame done timeout
    [drm:_dpu_encoder_phys_cmd_handle_ppdone_timeout.isra.0] *ERROR* id:31 pp:0 kickoff timeout 0 cnt 1 koff_cnt 1
    [drm:dpu_encoder_phys_cmd_prepare_for_kickoff] *ERROR* failed wait_for_idle: id:31 ret:-110 pp:0

In the same way this pingpong block should also be unbound followed by
an interface flush when the encoder is disabled, according to the
downstream display driver [2].

[1]: https://source.codeaurora.org/quic/la/platform/vendor/opensource/display-drivers/tree/msm/sde/sde_encoder_phys_cmd.c?h=LA.UM.9.16.r1-08500-MANNAR.0#n167
[2]: https://source.codeaurora.org/quic/la/platform/vendor/opensource/display-drivers/tree/msm/sde/sde_encoder.c?h=LA.UM.9.16.r1-08500-MANNAR.0#n2986

Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/475874/
Link: https://lore.kernel.org/r/20220223114011.219044-1-marijn.suijten@somainline.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: drop INTF_EDP from interface type conditions

To remove possible confusion between (old) INTF_EDP and newer INTF_DP,
stop using INTF_EDP in DPU's code. Until the 8x74/8x84 SoCs are
supported by DPU driver, there is no point in using INTF_EDP.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/475560/
Link: https://lore.kernel.org/r/20220222062246.242577-5-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: drop obsolete INTF_EDP comment

DPU driver never supported INTF_EDP, so let's drop the obsolete comment.
If at some point 8x74/8x84's INTF_EDP is ported to DPU driver,
corresponding handling will have to be ported too. Until that time, the
comment serves no purpose.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/475557/
Link: https://lore.kernel.org/r/20220222062246.242577-4-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: drop INTF_TYPE_MAX symbol

This enum value does not correspond to any of actual interface types,
it's not used by the driver, and the value of INTF_WB is greater than
INTF_TYPE_MAX. Thus this symbol serves no purpose and can be removed.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/475556/
Link: https://lore.kernel.org/r/20220222062246.242577-3-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: document INTF_EDP/INTF_DP difference

Based on the discussions on the mailing list, document enum
dpu_intf_type and it's controversial fields: INTF_DP and INTF_EDP.

INTF_EDP is used for older eDP interface found on msm8x74/msm8x84
INTF_DP is used for both eDP and DP interfaces handled by the msm/dp
driver. The DPU driver does not make a difference between them.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/475555/
Link: https://lore.kernel.org/r/20220222062246.242577-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: pass irq to dpu_encoder_helper_wait_for_irq()

Pass IRQ number directly rather than passing an index in the dpu_encoder's irq table.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/474703/
Link: https://lore.kernel.org/r/20220217043148.480898-7-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: remove struct dpu_encoder_irq

Remove additional indirection: specify IRQ callbacks and IRQ indices
directly rather than through the pointer in the irq structure. For each
IRQ we have a constant IRQ callback. This change simplifies code review
as the reader no longer needs to remember which function is called.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/474700/
Link: https://lore.kernel.org/r/20220217043148.480898-6-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: get rid of dpu_encoder_helper_(un)register_irq

Get rid of dpu_encoder_helper_register_irq/unregister_irq helpers, call
dpu_core_register/unregister_callback directly, without surrounding them
with helpers.

Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/474698/
Link: https://lore.kernel.org/r/20220217043148.480898-5-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: allow just single IRQ callback

DPU interrupts code allows multiple callbacks per interrut. In reality
none of the interrupts is shared between blocks (and will probably never
be). Drop support for registering multiple callbacks per interrupt to
simplify interrupt handling code.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/474701/
Link: https://lore.kernel.org/r/20220217043148.480898-4-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: remove always-true argument of dpu_core_irq_read()

The argument clear of the function dpu_core_irq_read() is always true.
Remove it.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/474697/
Link: https://lore.kernel.org/r/20220217043148.480898-3-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: remove extra wrappers around dpu_core_irq

Remove extra dpu_irq_* wrappers from dpu_kms.c, merge them directly into
dpu_core_irq_* functions.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/474696/
Link: https://lore.kernel.org/r/20220217043148.480898-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: change msm_sched_ops from global to static

Smatch reports this issue
msm_ringbuffer.c:43:36: warning: symbol 'msm_sched_ops' was not declared. Should it be static?

msm_sched_ops is only used in msm_ringbuffer.c so change its
storage-class specifier to static.

Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/482883/
Link: https://lore.kernel.org/r/20220421131507.1557667-1-trix@redhat.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: remove unused hotplug and edid macros from msm_drv.h

Remove unused MSM_DISPLAY_CAP_HOT_PLUG and MSM_DISPLAY_CAP_EDID
macros from msm_drv.h.

Even if we need these, there are drm equivalent ones present.

Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/482260/
Link: https://lore.kernel.org/r/1650049782-8421-1-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: Add support for DSC configuration

When DSC is enabled, we need to configure DSI registers accordingly and
configure the respective stream compression registers.

Add support to calculate the register setting based on DSC params and
timing information and configure these registers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480934/
Link: https://lore.kernel.org/r/20220406094031.1027376-15-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: Update generated headers

Update headers from mesa commit:

  commit 28ae397be111c37c6ced397e12d453a7695701bd
  Author: Vinod Koul <vkoul@kernel.org>
  Date:   Fri Apr 1 16:53:04 2022 +0530

      freedreno/registers: update dsi registers to support dsc

      Display Stream compression (DSC) compresses the display stream in
      host which is later decoded by panel. This requires addition of 3 new
      DSI registers to support DSC over DSI.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
      Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14967>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480932/
Link: https://lore.kernel.org/r/20220406094031.1027376-14-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: add mode valid callback for dsi_mgr

Add a mode valid callback for dsi_mgr for checking mode being valid in
case of DSC. For DSC the height and width needs to be multiple of slice,
so we check that here

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480930/
Link: https://lore.kernel.org/r/20220406094031.1027376-13-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add DSC support in RM

This add the bits in RM to enable the DSC blocks

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480928/
Link: https://lore.kernel.org/r/20220406094031.1027376-12-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add support for DSC in topology

For DSC to work we typically need a 2,2,1 configuration. This should
suffice for resolutions up to 4k. For more resolutions like 8k this won't
work.

Also, it is better to use 2 LMs and DSC instances as half width results
in lesser power consumption as compared to single LM, DSC at full width.

The panel has been tested only with 2,2,1 configuration, so for
now we blindly create 2,2,1 topology when DSC is enabled

Co-developed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480925/
Link: https://lore.kernel.org/r/20220406094031.1027376-11-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: Add missing num_dspp field documentation

Somehow documentation for num_dspp was missed, so add that

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480924/
Link: https://lore.kernel.org/r/20220406094031.1027376-10-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: don't use merge_3d if DSC merge topology is used

DPU supports different topologies for the case when multiple INTFs are
being driven by the single phys_enc. The driver defaults to using 3DMux
in such cases. Don't use it if DSC merge is used instead.

Suggested-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/480922/
Link: https://lore.kernel.org/r/20220406094031.1027376-9-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add support for DSC in encoder

We need to configure the encoder for DSC configuration and calculate DSC
parameters for the given timing so this patch adds that support by
adding dpu_encoder_prep_dsc() which is invoked when DSC is enabled.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480920/
Link: https://lore.kernel.org/r/20220406094031.1027376-8-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add DSC support in hw_ctl

Later gens of hardware have DSC bits moved to hw_ctl, so configure these
bits so that DSC would work there as well

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480918/
Link: https://lore.kernel.org/r/20220406094031.1027376-7-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add DSC for SDM845 to hw_catalog

This adds SDM845 DSC blocks into hw_catalog

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480916/
Link: https://lore.kernel.org/r/20220406094031.1027376-6-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add support for DSC in pingpong block

In SDM845, DSC can be enabled by writing to pingpong block registers, so
add support for DSC in hw_pp

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480914/
Link: https://lore.kernel.org/r/20220406094031.1027376-5-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/disp/dpu1: Add support for DSC

Display Stream Compression (DSC) is one of the hw blocks in dpu, so add
support by adding hw blocks for DSC

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480912/
Link: https://lore.kernel.org/r/20220406094031.1027376-4-vkoul@kernel.org
[DB: applied typo noticed by Robert Foss]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: Pass DSC params to drm_panel

When DSC is enabled, we need to get the DSC parameters from the panel
driver, so add a dsc parameter in panel to fetch and pass DSC
configuration for DSI panels to DPU encoder, which will enable and
then configure DSC hardware blocks accordingly.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480910/
Link: https://lore.kernel.org/r/20220406094031.1027376-3-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dsi: add support for dsc data

Display Stream Compression (DSC) parameters need to be calculated. Add
helpers and struct msm_display_dsc_config in msm_drv for this
msm_display_dsc_config uses drm_dsc_config for DSC parameters.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480908/
Link: https://lore.kernel.org/r/20220406094031.1027376-2-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dp: enable widebus feature for display port

Widebus feature will transmit two pixel data per pixel clock to interface.
This feature now is required to be enabled to easy migrant to higher
resolution applications in future. However since some legacy chipsets
does not support this feature, this feature is enabled by setting
wide_bus_en flag to true within msm_dp_desc struct.

changes in v2:
-- remove compression related code from timing
-- remove op_info from  struct msm_drm_private
-- remove unnecessary wide_bus_en variables
-- pass wide_bus_en into timing configuration by struct msm_dp

Changes in v3:
-- split patch into 3 patches
-- enable widebus feature base on chip hardware revision

Changes in v5:
-- DP_INTF_CONFIG_DATABUS_WIDEN

Changes in v6:
-- static inline bool msm_dp_wide_bus_enable() in msm_drv.h

Changes in v7:
-- add Tested-by

Changes in v9:
-- add wide_bus_en to msm_dp_desc

Changes in v10:
-- add wide_bus_en boolean to dp_catalog struc to avoid passing it as parameter

Changes in v11:
-- add const to dp_catalog_hw_revision()
-- add const to msm_dp_wide_bus_available()

Changes in v12:
-- dp_catalog_hw_revision(const struct dp_catalog *dp_catalog)
-- msm_dp_wide_bus_available(const struct msm_dp *dp_display)

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/476283/
Link: https://lore.kernel.org/r/1645824192-29670-5-git-send-email-quic_khsieh@quicinc.com
[DB: fixed the compilation]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: revise timing engine programming to support widebus feature

Widebus feature will transmit two pixel data per pixel clock to interface.
Timing engine provides driving force for this purpose. This patch base
on HPG (Hardware Programming Guide) to revise timing engine register
setting to accommodate both widebus and non widebus application. Also
horizontal width parameters need to be reduced by half since two pixel
data are clocked out per pixel clock when widebus feature enabled.

Widebus can be enabled individually at DP. However at DSI, widebus have
to be enabled along with DSC to achieve pixel clock rate be scaled down
with same ratio as compression ratio when 10 bits per source component.
Therefore this patch add no supports of DSI related widebus and compression.

Changes in v2:
-- remove compression related code from timing
-- remove op_info from  struct msm_drm_private
-- remove unnecessary wide_bus_en variables
-- pass wide_bus_en into timing configuration by struct msm_dp

Changes in v3:
-- split patch into 3 patches

Changes in v4:
-- rework timing engine to not interfere with dsi/hdmi
-- cover both widebus and compression

Changes in v5:
-- remove supports of DSI widebus and compression

Changes in v7:
-- split this patch into 3 patches
-- add Tested-by

Changes in v8:
-- move new registers writes under DATA_HCTL_EN features check.

Changes in v10:
-- add const inside dpu_encoder_is_widebus_enabled()
-- drop useless parenthesis please

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/476281/
Link: https://lore.kernel.org/r/1645824192-29670-4-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: replace BIT(x) with correspond marco define string

To improve code readability, this patch replace BIT(x) with
correspond register bit define string

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/476280/
Link: https://lore.kernel.org/r/1645824192-29670-3-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: adjust display_v_end for eDP and DP

The “DP timing” requires the active region to be defined in the
bottom-right corner of the frame dimensions which is different
with DSI. Therefore both display_h_end and display_v_end need
to be adjusted accordingly. However current implementation has
only display_h_end adjusted.

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Fixes: fc3a69ec68d3 ("drm/msm/dpu: intf timing path for displayport")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/476277/
Link: https://lore.kernel.org/r/1645824192-29670-2-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: remove unused plane_property field from msm_drm_private

Remove unused field plane_property from struct msm_drm_private. Also
drop the enum msm_mdp_plane_property which also becomes unused.

Fixes: 7d36db0be3b9 ("drm/msm/mdp5: switch to standard zpos property")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/480939/
Link: https://lore.kernel.org/r/20220406100556.479706-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: don't store created planes, connectors and encoders

There is no point now in storing arrays of creates planes, connectors
and encoders. Remove them from struct msm_drm_private.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/480945/
Link: https://lore.kernel.org/r/20220406101247.483649-4-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm: loop over encoders using drm_for_each_encoder()

Rather than manually looping over encoders array, use standard
drm_for_each_encoder() macro.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/480942/
Link: https://lore.kernel.org/r/20220406101247.483649-3-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drm/msm/dpu: remove manual destruction of DRM objects

Remove manual removal of DRM modesetting objects, it is done anyway by
the drm_mode_config_cleanup() called from msm_drm_uninit(). Other
MSM display drivers (MDP4, MDP5) do not manually destroy objects and
trust generic code to do it's work.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/480943/
Link: https://lore.kernel.org/r/20220406101247.483649-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>