diff options
author | Rob Clark <robdclark@gmail.com> | 2017-02-10 15:36:33 -0500 |
---|---|---|
committer | Rob Clark <robdclark@gmail.com> | 2017-04-08 06:59:31 -0400 |
commit | eeb754746b140c5f55e6b25706a9142aa549b348 (patch) | |
tree | 4cab1821b15e61aa59f1b4addef82c48560f2ed5 /drivers/gpu/drm/msm/adreno | |
parent | c3c3ab199bdd5b39f0a16545f4205e20c03ba20f (diff) | |
download | op-kernel-dev-eeb754746b140c5f55e6b25706a9142aa549b348.zip op-kernel-dev-eeb754746b140c5f55e6b25706a9142aa549b348.tar.gz |
drm/msm/gpu: use pm-runtime
We need to use pm-runtime properly when IOMMU is using device_link() to
control it's own clocks.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno')
-rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_device.c | 36 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 |
2 files changed, 34 insertions, 13 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index ece39b1..bc170b7 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -155,21 +155,14 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev) if (gpu) { int ret; - mutex_lock(&dev->struct_mutex); - gpu->funcs->pm_resume(gpu); - mutex_unlock(&dev->struct_mutex); - disable_irq(gpu->irq); - - ret = gpu->funcs->hw_init(gpu); + pm_runtime_get_sync(&pdev->dev); + ret = msm_gpu_hw_init(gpu); + pm_runtime_put_sync(&pdev->dev); if (ret) { dev_err(dev->dev, "gpu hw init failed: %d\n", ret); gpu->funcs->destroy(gpu); gpu = NULL; - } else { - enable_irq(gpu->irq); - /* give inactive pm a chance to kick in: */ - msm_gpu_retire(gpu); } } @@ -296,12 +289,35 @@ static const struct of_device_id dt_match[] = { {} }; +#ifdef CONFIG_PM +static int adreno_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct msm_gpu *gpu = platform_get_drvdata(pdev); + + return gpu->funcs->pm_resume(gpu); +} + +static int adreno_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct msm_gpu *gpu = platform_get_drvdata(pdev); + + return gpu->funcs->pm_suspend(gpu); +} +#endif + +static const struct dev_pm_ops adreno_pm_ops = { + SET_RUNTIME_PM_OPS(adreno_suspend, adreno_resume, NULL) +}; + static struct platform_driver adreno_driver = { .probe = adreno_probe, .remove = adreno_remove, .driver = { .name = "adreno", .of_match_table = dt_match, + .pm = &adreno_pm_ops, }, }; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 50e0f54..823f9df 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -115,6 +115,9 @@ void adreno_recover(struct msm_gpu *gpu) struct drm_device *dev = gpu->dev; int ret; + // XXX pm-runtime?? we *need* the device to be off after this + // so maybe continuing to call ->pm_suspend/resume() is better? + gpu->funcs->pm_suspend(gpu); /* reset ringbuffer: */ @@ -127,13 +130,11 @@ void adreno_recover(struct msm_gpu *gpu) gpu->funcs->pm_resume(gpu); - disable_irq(gpu->irq); - ret = gpu->funcs->hw_init(gpu); + ret = msm_gpu_hw_init(gpu); if (ret) { dev_err(dev->dev, "gpu hw init failed: %d\n", ret); /* hmm, oh well? */ } - enable_irq(gpu->irq); } void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, @@ -365,6 +366,10 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, if (ret) return ret; + pm_runtime_set_autosuspend_delay(&pdev->dev, DRM_MSM_INACTIVE_PERIOD); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + ret = request_firmware(&adreno_gpu->pm4, adreno_gpu->info->pm4fw, drm->dev); if (ret) { dev_err(drm->dev, "failed to load %s PM4 firmware: %d\n", |