diff options
| author | Dave Airlie | 2019-04-24 10:30:41 +1000 |
|---|---|---|
| committer | Dave Airlie | 2019-04-24 10:30:45 +1000 |
| commit | 6e865c7230140126cbac62e0aef5807108e46e63 (patch) | |
| tree | e605263c9527770781331c736020834950b47c27 /drivers/gpu | |
| parent | 8d8f6f704495b1135ef77b7860d833fda97ea841 (diff) | |
| parent | 61b51fb51c01a519a249d28ec55c6513a13be5a3 (diff) | |
Merge tag 'drm/tegra/for-5.2-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next
drm/tegra: Changes for v5.2-rc1
This contains a fix for the usage of shared resets that previously
generated a WARN on boot. In addition, there's a fix for CPU cache
maintenance of GEM buffers allocated using get_pages().
(airlied: contains a merge from a shared tegra tree)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190418151447.9430-1-thierry.reding@gmail.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/tegra/gem.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 21 |
2 files changed, 22 insertions, 3 deletions
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 4f80100ff5f3..4cce11fd8836 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -204,7 +204,7 @@ static void tegra_bo_free(struct drm_device *drm, struct tegra_bo *bo) { if (bo->pages) { dma_unmap_sg(drm->dev, bo->sgt->sgl, bo->sgt->nents, - DMA_BIDIRECTIONAL); + DMA_FROM_DEVICE); drm_gem_put_pages(&bo->gem, bo->pages, true, true); sg_free_table(bo->sgt); kfree(bo->sgt); @@ -230,7 +230,7 @@ static int tegra_bo_get_pages(struct drm_device *drm, struct tegra_bo *bo) } err = dma_map_sg(drm->dev, bo->sgt->sgl, bo->sgt->nents, - DMA_BIDIRECTIONAL); + DMA_FROM_DEVICE); if (err == 0) { err = -EFAULT; goto free_sgt; diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 40057106f5f3..5be5a0817dfe 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2871,6 +2871,13 @@ static int tegra_sor_init(struct host1x_client *client) * kernel is possible. */ if (sor->rst) { + err = reset_control_acquire(sor->rst); + if (err < 0) { + dev_err(sor->dev, "failed to acquire SOR reset: %d\n", + err); + return err; + } + err = reset_control_assert(sor->rst); if (err < 0) { dev_err(sor->dev, "failed to assert SOR reset: %d\n", @@ -2894,6 +2901,8 @@ static int tegra_sor_init(struct host1x_client *client) err); return err; } + + reset_control_release(sor->rst); } err = clk_prepare_enable(sor->clk_safe); @@ -3331,7 +3340,7 @@ static int tegra_sor_probe(struct platform_device *pdev) goto remove; } - sor->rst = devm_reset_control_get(&pdev->dev, "sor"); + sor->rst = devm_reset_control_get_exclusive_released(&pdev->dev, "sor"); if (IS_ERR(sor->rst)) { err = PTR_ERR(sor->rst); @@ -3519,6 +3528,8 @@ static int tegra_sor_suspend(struct device *dev) dev_err(dev, "failed to assert reset: %d\n", err); return err; } + + reset_control_release(sor->rst); } usleep_range(1000, 2000); @@ -3542,9 +3553,17 @@ static int tegra_sor_resume(struct device *dev) usleep_range(1000, 2000); if (sor->rst) { + err = reset_control_acquire(sor->rst); + if (err < 0) { + dev_err(dev, "failed to acquire reset: %d\n", err); + clk_disable_unprepare(sor->clk); + return err; + } + err = reset_control_deassert(sor->rst); if (err < 0) { dev_err(dev, "failed to deassert reset: %d\n", err); + reset_control_release(sor->rst); clk_disable_unprepare(sor->clk); return err; } |