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drm/mediatek: Drop local dma_parms

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Since commit 9495b7e92f ("driver core: platform: Initialize dma_parms
for platform devices"), struct platform_device already provides a
dma_parms structure, so we can save allocating another one.

Also the DMA segment size is simply a size, not a bitmask.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Robin Murphy
2020-09-03 21:59:14 +01:00
committed by Chun-Kuang Hu
parent 9273cf7d39
commit 31855cff03
2 changed files with 3 additions and 26 deletions
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27
drivers/gpu/drm/mediatek/mtk_drm_drv.c
View File

@@ -241,21 +241,10 @@ static int mtk_drm_kms_init(struct drm_device *drm)
* Configure the DMA segment size to make sure we get contiguous IOVA
* when importing PRIME buffers.
*/
if (!dma_dev->dma_parms) {
private->dma_parms_allocated = true;
dma_dev->dma_parms =
devm_kzalloc(drm->dev, sizeof(*dma_dev->dma_parms),
GFP_KERNEL);
}
if (!dma_dev->dma_parms) {
ret = -ENOMEM;
goto put_dma_dev;
}
ret = dma_set_max_seg_size(dma_dev, (unsigned int)DMA_BIT_MASK(32));
ret = dma_set_max_seg_size(dma_dev, UINT_MAX);
if (ret) {
dev_err(dma_dev, "Failed to set DMA segment size\n");
goto err_unset_dma_parms;
goto err_component_unbind;
}
/*
@@ -266,18 +255,13 @@ static int mtk_drm_kms_init(struct drm_device *drm)
drm->irq_enabled = true;
ret = drm_vblank_init(drm, MAX_CRTC);
if (ret < 0)
goto err_unset_dma_parms;
goto err_component_unbind;
drm_kms_helper_poll_init(drm);
drm_mode_config_reset(drm);
return 0;
err_unset_dma_parms:
if (private->dma_parms_allocated)
dma_dev->dma_parms = NULL;
put_dma_dev:
put_device(private->dma_dev);
err_component_unbind:
component_unbind_all(drm->dev, drm);
put_mutex_dev:
@@ -287,14 +271,9 @@ put_mutex_dev:
static void mtk_drm_kms_deinit(struct drm_device *drm)
{
struct mtk_drm_private *private = drm->dev_private;
drm_kms_helper_poll_fini(drm);
drm_atomic_helper_shutdown(drm);
if (private->dma_parms_allocated)
private->dma_dev->dma_parms = NULL;
component_unbind_all(drm->dev, drm);
}

2
drivers/gpu/drm/mediatek/mtk_drm_drv.h
View File

@@ -44,8 +44,6 @@ struct mtk_drm_private {
struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
const struct mtk_mmsys_driver_data *data;
struct drm_atomic_state *suspend_state;
bool dma_parms_allocated;
};
extern struct platform_driver mtk_ddp_driver;