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author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-04-19 18:53:43 +0300 |
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committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-04-26 00:50:46 +0300 |
commit | ecb23f2e3009082bb0b74a1cb1d918f90dc35778 (patch) | |
tree | 82a36d3528b90189cc8e2e4db393265150583ee2 /drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | |
parent | e1072257ff6544ac13e59d41d5fa1f2d3a98c63a (diff) | |
download | linux-ecb23f2e3009082bb0b74a1cb1d918f90dc35778.tar.bz2 |
drm/msm: split the main platform driver
Currently the msm platform driver is a multiplex handling several cases:
- headless GPU-only driver,
- MDP4 with flat device nodes,
- MDP5/DPU MDSS with all the nodes being children of MDSS node.
This results in not-so-perfect code, checking the hardware version
(MDP4/MDP5/DPU) in several places, checking for mdss even when it can
not exist, etc. Split the code into three handling subdrivers (mdp4,
mdss and headless msm).
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/482507/
Link: https://lore.kernel.org/r/20220419155346.1272627-4-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c')
-rw-r--r-- | drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c index 3cf476c55158..5dc839184aef 100644 --- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c @@ -569,3 +569,59 @@ static struct mdp4_platform_config *mdp4_get_config(struct platform_device *dev) return &config; } + +static const struct dev_pm_ops mdp4_pm_ops = { + .prepare = msm_pm_prepare, + .complete = msm_pm_complete, +}; + +static int mdp4_probe(struct platform_device *pdev) +{ + struct msm_drm_private *priv; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + + /* + * on MDP4 based platforms, the MDP platform device is the component + * that adds other display interface components to itself. + */ + return msm_drv_probe(&pdev->dev, &pdev->dev); +} + +static int mdp4_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &msm_drm_ops); + + return 0; +} + +static const struct of_device_id mdp4_dt_match[] = { + { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mdp4_dt_match); + +static struct platform_driver mdp4_platform_driver = { + .probe = mdp4_probe, + .remove = mdp4_remove, + .shutdown = msm_drv_shutdown, + .driver = { + .name = "mdp4", + .of_match_table = mdp4_dt_match, + .pm = &mdp4_pm_ops, + }, +}; + +void __init msm_mdp4_register(void) +{ + platform_driver_register(&mdp4_platform_driver); +} + +void __exit msm_mdp4_unregister(void) +{ + platform_driver_unregister(&mdp4_platform_driver); +} |