diff options
| author | Lowry Li (Arm Technology China) <Lowry.Li@arm.com> | 2019-04-11 09:37:13 +0100 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2019-06-04 15:12:44 +0100 |
| commit | a260e0b847f079b7eda85a76fc066a6537f34951 (patch) | |
| tree | 586984020dc2c50b53066312795b35e339e0d22b /drivers | |
| parent | ba1b9f8c4658663dd66e992bef31f6f8747b6c8c (diff) | |
drm/komeda: fixing of DMA mapping sg segment warning
Fixing the DMA mapping sg segment warning, which shows "DMA-API: mapping
sg segment longer than device claims to support [len=921600] [max=65536]".
Fixed by setting the max segment size at Komeda driver.
This patch depends on:
- https://patchwork.freedesktop.org/series/54448/
- https://patchwork.freedesktop.org/series/54449/
- https://patchwork.freedesktop.org/series/54450/
- https://patchwork.freedesktop.org/series/58976/
Changes since v1:
- Adds member description
- Adds patch denpendency in the comment
Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Ayan Kumar Halder <ayan.halder@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_dev.h | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c index d7527e126658..b67030a9f056 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c @@ -8,6 +8,7 @@ #include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/platform_device.h> +#include <linux/dma-mapping.h> #ifdef CONFIG_DEBUG_FS #include <linux/debugfs.h> #include <linux/seq_file.h> @@ -249,6 +250,9 @@ struct komeda_dev *komeda_dev_create(struct device *dev) goto err_cleanup; } + dev->dma_parms = &mdev->dma_parms; + dma_set_max_seg_size(dev, DMA_BIT_MASK(32)); + err = sysfs_create_group(&dev->kobj, &komeda_sysfs_attr_group); if (err) { DRM_ERROR("create sysfs group failed.\n"); diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h index 994c6ea3039b..973fd5e0eb98 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h @@ -149,6 +149,8 @@ struct komeda_dev { struct device *dev; /** @reg_base: the base address of komeda io space */ u32 __iomem *reg_base; + /** @dma_parms: the dma parameters of komeda */ + struct device_dma_parameters dma_parms; /** @chip: the basic chip information */ struct komeda_chip_info chip; |