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| author | Mihail Atanassov <Mihail.Atanassov@arm.com> | 2019-08-05 09:56:25 +0000 |
|---|---|---|
| committer | Ayan kumar halder <ayan.halder@arm.com> | 2019-08-20 11:22:23 +0100 |
| commit | a8c16b7593bd1a4e613164a47c526ca9d1be764b (patch) | |
| tree | b6cd4a5b441969709afeeba7f0ce2b1daa2221cd /drivers/gpu/drm/arm | |
| parent | ea4e537ae149b468963bf500cfb0a99f8df4b3e7 (diff) | |
drm/komeda: Add support for 'memory-region' DT node property
The 'memory-region' property of the komeda display driver DT binding
allows the use of a 'reserved-memory' node for buffer allocations. Add
the requisite of_reserved_mem_device_{init,release} calls to actually
make use of the memory if present.
Changes since v1:
- Move handling inside komeda_parse_dt
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Ayan Kumar Halder <ayan.halder@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Link:- https://patchwork.kernel.org/patch/11076413/
Diffstat (limited to 'drivers/gpu/drm/arm')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 9 |
1 files changed, 9 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 1ff7f4b2c620..0142ee991957 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/iommu.h> #include <linux/of_device.h> #include <linux/of_graph.h> +#include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #ifdef CONFIG_DEBUG_FS @@ -146,6 +147,12 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev) return mdev->irq; } + /* Get the optional framebuffer memory resource */ + ret = of_reserved_mem_device_init(dev); + if (ret && ret != -ENODEV) + return ret; + ret = 0; + for_each_available_child_of_node(np, child) { if (of_node_cmp(child->name, "pipeline") == 0) { ret = komeda_parse_pipe_dt(mdev, child); @@ -292,6 +299,8 @@ void komeda_dev_destroy(struct komeda_dev *mdev) mdev->n_pipelines = 0; + of_reserved_mem_device_release(dev); + if (funcs && funcs->cleanup) funcs->cleanup(mdev); |