diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_device.c | 36 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_debugfs.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.c | 99 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.h | 12 |
6 files changed, 71 insertions, 93 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index ece39b16a864..bc170b7d5546 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 50e0f54f29d2..823f9dfe6db9 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", diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c index 89b3b79f92c8..1855182c76ce 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.c +++ b/drivers/gpu/drm/msm/msm_debugfs.c @@ -28,9 +28,9 @@ static int msm_gpu_show(struct drm_device *dev, struct seq_file *m) if (gpu) { seq_printf(m, "%s Status:\n", gpu->name); - gpu->funcs->pm_resume(gpu); + pm_runtime_get_sync(&gpu->pdev->dev); gpu->funcs->show(gpu, m); - gpu->funcs->pm_suspend(gpu); + pm_runtime_put_sync(&gpu->pdev->dev); } return 0; diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 9208e67be453..5875aa8fbe7c 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -265,6 +265,8 @@ static int msm_drm_uninit(struct device *dev) if (gpu) { mutex_lock(&ddev->struct_mutex); + // XXX what do we do here? + //pm_runtime_enable(&pdev->dev); gpu->funcs->pm_suspend(gpu); mutex_unlock(&ddev->struct_mutex); gpu->funcs->destroy(gpu); diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 99e05aacbee1..41d2abc001eb 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -152,18 +152,9 @@ static int disable_axi(struct msm_gpu *gpu) int msm_gpu_pm_resume(struct msm_gpu *gpu) { - struct drm_device *dev = gpu->dev; int ret; - DBG("%s: active_cnt=%d", gpu->name, gpu->active_cnt); - - WARN_ON(!mutex_is_locked(&dev->struct_mutex)); - - if (gpu->active_cnt++ > 0) - return 0; - - if (WARN_ON(gpu->active_cnt <= 0)) - return -EINVAL; + DBG("%s", gpu->name); ret = enable_pwrrail(gpu); if (ret) @@ -177,23 +168,16 @@ int msm_gpu_pm_resume(struct msm_gpu *gpu) if (ret) return ret; + gpu->needs_hw_init = true; + return 0; } int msm_gpu_pm_suspend(struct msm_gpu *gpu) { - struct drm_device *dev = gpu->dev; int ret; - DBG("%s: active_cnt=%d", gpu->name, gpu->active_cnt); - - WARN_ON(!mutex_is_locked(&dev->struct_mutex)); - - if (--gpu->active_cnt > 0) - return 0; - - if (WARN_ON(gpu->active_cnt < 0)) - return -EINVAL; + DBG("%s", gpu->name); ret = disable_axi(gpu); if (ret) @@ -210,53 +194,20 @@ int msm_gpu_pm_suspend(struct msm_gpu *gpu) return 0; } -/* - * Inactivity detection (for suspend): - */ - -static void inactive_worker(struct work_struct *work) -{ - struct msm_gpu *gpu = container_of(work, struct msm_gpu, inactive_work); - struct drm_device *dev = gpu->dev; - - if (gpu->inactive) - return; - - DBG("%s: inactive!\n", gpu->name); - mutex_lock(&dev->struct_mutex); - if (!(msm_gpu_active(gpu) || gpu->inactive)) { - disable_axi(gpu); - disable_clk(gpu); - gpu->inactive = true; - } - mutex_unlock(&dev->struct_mutex); -} - -static void inactive_handler(unsigned long data) +int msm_gpu_hw_init(struct msm_gpu *gpu) { - struct msm_gpu *gpu = (struct msm_gpu *)data; - struct msm_drm_private *priv = gpu->dev->dev_private; + int ret; - queue_work(priv->wq, &gpu->inactive_work); -} + if (!gpu->needs_hw_init) + return 0; -/* cancel inactive timer and make sure we are awake: */ -static void inactive_cancel(struct msm_gpu *gpu) -{ - DBG("%s", gpu->name); - del_timer(&gpu->inactive_timer); - if (gpu->inactive) { - enable_clk(gpu); - enable_axi(gpu); - gpu->inactive = false; - } -} + disable_irq(gpu->irq); + ret = gpu->funcs->hw_init(gpu); + if (!ret) + gpu->needs_hw_init = false; + enable_irq(gpu->irq); -static void inactive_start(struct msm_gpu *gpu) -{ - DBG("%s", gpu->name); - mod_timer(&gpu->inactive_timer, - round_jiffies_up(jiffies + DRM_MSM_INACTIVE_JIFFIES)); + return ret; } /* @@ -296,8 +247,9 @@ static void recover_worker(struct work_struct *work) /* retire completed submits, plus the one that hung: */ retire_submits(gpu); - inactive_cancel(gpu); + pm_runtime_get_sync(&gpu->pdev->dev); gpu->funcs->recover(gpu); + pm_runtime_put_sync(&gpu->pdev->dev); /* replay the remaining submits after the one that hung: */ list_for_each_entry(submit, &gpu->submit_list, node) { @@ -400,6 +352,8 @@ void msm_gpu_perfcntr_start(struct msm_gpu *gpu) { unsigned long flags; + pm_runtime_get_sync(&gpu->pdev->dev); + spin_lock_irqsave(&gpu->perf_lock, flags); /* we could dynamically enable/disable perfcntr registers too.. */ gpu->last_sample.active = msm_gpu_active(gpu); @@ -413,6 +367,7 @@ void msm_gpu_perfcntr_start(struct msm_gpu *gpu) void msm_gpu_perfcntr_stop(struct msm_gpu *gpu) { gpu->perfcntr_active = false; + pm_runtime_put_sync(&gpu->pdev->dev); } /* returns -errno or # of cntrs sampled */ @@ -458,6 +413,8 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit) drm_gem_object_unreference(&msm_obj->base); } + pm_runtime_mark_last_busy(&gpu->pdev->dev); + pm_runtime_put_autosuspend(&gpu->pdev->dev); msm_gem_submit_free(submit); } @@ -492,9 +449,6 @@ static void retire_worker(struct work_struct *work) mutex_lock(&dev->struct_mutex); retire_submits(gpu); mutex_unlock(&dev->struct_mutex); - - if (!msm_gpu_active(gpu)) - inactive_start(gpu); } /* call from irq handler to schedule work to retire bo's */ @@ -515,7 +469,9 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, WARN_ON(!mutex_is_locked(&dev->struct_mutex)); - inactive_cancel(gpu); + pm_runtime_get_sync(&gpu->pdev->dev); + + msm_gpu_hw_init(gpu); list_add_tail(&submit->node, &gpu->submit_list); @@ -576,7 +532,6 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, gpu->dev = drm; gpu->funcs = funcs; gpu->name = name; - gpu->inactive = true; gpu->fctx = msm_fence_context_alloc(drm, name); if (IS_ERR(gpu->fctx)) { ret = PTR_ERR(gpu->fctx); @@ -586,13 +541,10 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, INIT_LIST_HEAD(&gpu->active_list); INIT_WORK(&gpu->retire_work, retire_worker); - INIT_WORK(&gpu->inactive_work, inactive_worker); INIT_WORK(&gpu->recover_work, recover_worker); INIT_LIST_HEAD(&gpu->submit_list); - setup_timer(&gpu->inactive_timer, inactive_handler, - (unsigned long)gpu); setup_timer(&gpu->hangcheck_timer, hangcheck_handler, (unsigned long)gpu); @@ -684,6 +636,9 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, goto fail; } + gpu->pdev = pdev; + platform_set_drvdata(pdev, gpu); + bs_init(gpu); return 0; diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index c4c39d3272c7..72dba973aabf 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -64,6 +64,7 @@ struct msm_gpu_funcs { struct msm_gpu { const char *name; struct drm_device *dev; + struct platform_device *pdev; const struct msm_gpu_funcs *funcs; /* performance counters (hw & sw): */ @@ -88,9 +89,8 @@ struct msm_gpu { /* fencing: */ struct msm_fence_context *fctx; - /* is gpu powered/active? */ - int active_cnt; - bool inactive; + /* does gpu need hw_init? */ + bool needs_hw_init; /* worker for handling active-list retiring: */ struct work_struct retire_work; @@ -114,9 +114,7 @@ struct msm_gpu { /* Hang and Inactivity Detection: */ #define DRM_MSM_INACTIVE_PERIOD 66 /* in ms (roughly four frames) */ -#define DRM_MSM_INACTIVE_JIFFIES msecs_to_jiffies(DRM_MSM_INACTIVE_PERIOD) - struct timer_list inactive_timer; - struct work_struct inactive_work; + #define DRM_MSM_HANGCHECK_PERIOD 500 /* in ms */ #define DRM_MSM_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_MSM_HANGCHECK_PERIOD) struct timer_list hangcheck_timer; @@ -196,6 +194,8 @@ static inline void gpu_write64(struct msm_gpu *gpu, u32 lo, u32 hi, u64 val) int msm_gpu_pm_suspend(struct msm_gpu *gpu); int msm_gpu_pm_resume(struct msm_gpu *gpu); +int msm_gpu_hw_init(struct msm_gpu *gpu); + void msm_gpu_perfcntr_start(struct msm_gpu *gpu); void msm_gpu_perfcntr_stop(struct msm_gpu *gpu); int msm_gpu_perfcntr_sample(struct msm_gpu *gpu, uint32_t *activetime, |