Hi Mihail:
On Fri, Aug 02, 2019 at 10:40:19PM +0800, Mihail Atanassov wrote:
> 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.
>
> Signed-off-by: Mihail Atanassov <mihail.atanas...@arm.com>
> ---
> drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> index cfa5068d9d1e..2ec877ad260a 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> @@ -6,6 +6,7 @@
> */
> #include <linux/module.h>
> #include <linux/kernel.h>
> +#include <linux/of_reserved_mem.h>
> #include <linux/platform_device.h>
> #include <linux/component.h>
> #include <drm/drm_of.h>
> @@ -32,6 +33,7 @@ static void komeda_unbind(struct device *dev)
> return;
>
> komeda_kms_detach(mdrv->kms);
> + of_reserved_mem_device_release(dev);
> komeda_dev_destroy(mdrv->mdev);
>
> dev_set_drvdata(dev, NULL);
> @@ -53,6 +55,11 @@ static int komeda_bind(struct device *dev)
> goto free_mdrv;
> }
>
> + /* Get the optional framebuffer memory resource */
> + err = of_reserved_mem_device_init(dev);
> + if (err && err != -ENODEV)
> + goto destroy_mdev;
> +
Hi Mihail:
Thanks for your patch.
Since we have a dedicated function for DT parsing: "komeda_parse_dt",
seems we'd move this into it as well.
thank you
James
> mdrv->kms = komeda_kms_attach(mdrv->mdev);
> if (IS_ERR(mdrv->kms)) {
> err = PTR_ERR(mdrv->kms);
> --
> 2.22.0
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