diff options
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 31 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.h | 1 |
4 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 0b1c23806590..1c2975ea9c9c 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -1279,6 +1279,9 @@ static int dpu_dev_probe(struct platform_device *pdev) int irq; int ret = 0; + if (!msm_disp_drv_should_bind(&pdev->dev, true)) + return -ENODEV; + dpu_kms = devm_kzalloc(dev, sizeof(*dpu_kms), GFP_KERNEL); if (!dpu_kms) return -ENOMEM; diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index 25279c724fe0..e5f7052bcb87 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -852,6 +852,9 @@ static int mdp5_dev_probe(struct platform_device *pdev) DBG(""); + if (!msm_disp_drv_should_bind(&pdev->dev, false)) + return -ENODEV; + mdp5_kms = devm_kzalloc(&pdev->dev, sizeof(*mdp5_kms), GFP_KERNEL); if (!mdp5_kms) return -ENOMEM; diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 50b65ffc24b1..f79134fc6cc0 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -969,6 +969,37 @@ static int add_components_mdp(struct device *master_dev, return 0; } +#if !IS_REACHABLE(CONFIG_DRM_MSM_MDP5) || !IS_REACHABLE(CONFIG_DRM_MSM_DPU) +bool msm_disp_drv_should_bind(struct device *dev, bool dpu_driver) +{ + /* If just a single driver is enabled, use it no matter what */ + return true; +} +#else + +static bool prefer_mdp5 = true; +MODULE_PARM_DESC(prefer_mdp5, "Select whether MDP5 or DPU driver should be preferred"); +module_param(prefer_mdp5, bool, 0444); + +/* list all platforms supported by both mdp5 and dpu drivers */ +static const char *const msm_mdp5_dpu_migration[] = { + NULL, +}; + +bool msm_disp_drv_should_bind(struct device *dev, bool dpu_driver) +{ + /* If it is not an MDP5 device, do not try MDP5 driver */ + if (!of_device_is_compatible(dev->of_node, "qcom,mdp5")) + return dpu_driver; + + /* If it is not in the migration list, use MDP5 */ + if (!of_device_compatible_match(dev->of_node, msm_mdp5_dpu_migration)) + return !dpu_driver; + + return prefer_mdp5 ? !dpu_driver : dpu_driver; +} +#endif + /* * We don't know what's the best binding to link the gpu with the drm device. * Fow now, we just hunt for all the possible gpus that we support, and add them diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 01e783130054..762e13e2df74 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -563,5 +563,6 @@ int msm_drv_probe(struct device *dev, struct msm_kms *kms); void msm_kms_shutdown(struct platform_device *pdev); +bool msm_disp_drv_should_bind(struct device *dev, bool dpu_driver); #endif /* __MSM_DRV_H__ */ |