From: Jordan Crouse <jcrouse@codeaurora.org>
Date: Mon, 6 Aug 2018 11:33:22 -0600
Subject: drm/msm/adreno: Load the firmware before bringing up the hardware
Git-commit: 2c087a336676961513f61a0012a88e399e69e943
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

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 <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 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(-)

--- 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 d
 	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 d
 		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);
--- 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;
 
--- 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 *d
 		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);