diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index 901009e1f219..4a60f5fca6b0 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -5,6 +5,7 @@ * Author: Rob Clark <robdclark@gmail.com> */ +#include <linux/interconnect.h> #include <linux/of_irq.h> #include "msm_drv.h" @@ -1037,9 +1038,46 @@ static const struct component_ops mdp5_ops = { .unbind = mdp5_unbind, }; +static int mdp5_setup_interconnect(struct platform_device *pdev) +{ + struct icc_path *path0 = of_icc_get(&pdev->dev, "mdp0-mem"); + struct icc_path *path1 = of_icc_get(&pdev->dev, "mdp1-mem"); + struct icc_path *path_rot = of_icc_get(&pdev->dev, "rotator-mem"); + + if (IS_ERR(path0)) + return PTR_ERR(path0); + + if (!path0) { + /* no interconnect support is not necessarily a fatal + * condition, the platform may simply not have an + * interconnect driver yet. But warn about it in case + * bootloader didn't setup bus clocks high enough for + * scanout. + */ + dev_warn(&pdev->dev, "No interconnect support may cause display underflows!\n"); + return 0; + } + + icc_set_bw(path0, 0, MBps_to_icc(6400)); + + if (!IS_ERR_OR_NULL(path1)) + icc_set_bw(path1, 0, MBps_to_icc(6400)); + if (!IS_ERR_OR_NULL(path_rot)) + icc_set_bw(path_rot, 0, MBps_to_icc(6400)); + + return 0; +} + static int mdp5_dev_probe(struct platform_device *pdev) { + int ret; + DBG(""); + + ret = mdp5_setup_interconnect(pdev); + if (ret) + return ret; + return component_add(&pdev->dev, &mdp5_ops); } |