xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

of/device: Add input id to of_dma_configure()

Browse Source 
Devices sitting on proprietary busses have a device ID space that
is owned by the respective bus and related firmware bindings. In order
to let the generic OF layer handle the input translations to
an IOMMU id, for such busses the current of_dma_configure() interface
should be extended in order to allow the bus layer to provide the
device input id parameter - that is retrieved/assigned in bus
specific code and firmware.

Augment of_dma_configure() to add an optional input_id parameter,
leaving current functionality unchanged.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Link: https://lore.kernel.org/r/20200619082013.13661-8-lorenzo.pieralisi@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Lorenzo Pieralisi
2020-06-19 09:20:08 +01:00
committed by Catalin Marinas
parent 746a71d02b
commit a081bd4af4
5 changed files with 72 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
include/linux/of_device.h
View File

@@ -55,9 +55,15 @@ static inline struct device_node *of_cpu_device_node_get(int cpu)
return of_node_get(cpu_dev->of_node);
}
int of_dma_configure(struct device *dev,
int of_dma_configure_id(struct device *dev,
struct device_node *np,
bool force_dma);
bool force_dma, const u32 *id);
static inline int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma)
{
return of_dma_configure_id(dev, np, force_dma, NULL);
}
#else /* CONFIG_OF */
static inline int of_driver_match_device(struct device *dev,
@@ -106,6 +112,12 @@ static inline struct device_node *of_cpu_device_node_get(int cpu)
return NULL;
}
static inline int of_dma_configure_id(struct device *dev,
struct device_node *np,
bool force_dma)
{
return 0;
}
static inline int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma)