From 2c087a336676961513f61a0012a88e399e69e943 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Mon, 6 Aug 2018 11:33:22 -0600 Subject: [PATCH] drm/msm/adreno: Load the firmware before bringing up the hardware Failure to load firmware is the primary reason to fail adreno_load_gpu(). Try to load it first before going into the hardware initialization code and unwinding it. This is important for a6xx because the GMU gets loaded from the runtime power code and it is more costly to fail in that path because of missing firmware. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/adreno_device.c | 23 +++++++++++++++++++++- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- drivers/gpu/drm/msm/adreno/adreno_gpu.h | 2 +- 3 files changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 44813624a286..37746f1d54cf 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -155,6 +155,7 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev) struct msm_drm_private *priv = dev->dev_private; struct platform_device *pdev = priv->gpu_pdev; struct msm_gpu *gpu = NULL; + struct adreno_gpu *adreno_gpu; int ret; if (pdev) @@ -165,7 +166,27 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev) return NULL; } - pm_runtime_get_sync(&pdev->dev); + adreno_gpu = to_adreno_gpu(gpu); + + /* + * The number one reason for HW init to fail is if the firmware isn't + * loaded yet. Try that first and don't bother continuing on + * otherwise + */ + + ret = adreno_load_fw(adreno_gpu); + if (ret) + return NULL; + + /* Make sure pm runtime is active and reset any previous errors */ + pm_runtime_set_active(&pdev->dev); + + ret = pm_runtime_get_sync(&pdev->dev); + if (ret < 0) { + dev_err(dev->dev, "Couldn't power up the GPU: %d\n", ret); + return NULL; + } + mutex_lock(&dev->struct_mutex); ret = msm_gpu_hw_init(gpu); mutex_unlock(&dev->struct_mutex); diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 65c0ae7d8ad1..da1363a0c54d 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -149,7 +149,7 @@ out: return fw; } -static int adreno_load_fw(struct adreno_gpu *adreno_gpu) +int adreno_load_fw(struct adreno_gpu *adreno_gpu) { int i; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index 4406776597fd..d391ff377612 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -228,7 +228,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, struct adreno_gpu *gpu, const struct adreno_gpu_funcs *funcs, int nr_rings); void adreno_gpu_cleanup(struct adreno_gpu *gpu); - +int adreno_load_fw(struct adreno_gpu *adreno_gpu); void adreno_gpu_state_destroy(struct msm_gpu_state *state); -- 2.39.5