From a8c16b7593bd1a4e613164a47c526ca9d1be764b Mon Sep 17 00:00:00 2001 From: Mihail Atanassov Date: Mon, 5 Aug 2019 09:56:25 +0000 Subject: [PATCH] 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 Signed-off-by: Ayan Kumar Halder Reviewed-by: James Qian Wang (Arm Technology China) Link:- https://patchwork.kernel.org/patch/11076413/ --- drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 9 +++++++++ 1 file changed, 9 insertions(+) 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 #include #include +#include #include #include #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); -- 2.30.2