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linux/Documentation/ABI/testing/sysfs-platform-hidma

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dmaengine: qcom_hidma: add support for object hierarchy In order to create a relationship model between the channels and the management object, we are adding support for object hierarchy to the drivers. This patch simplifies the userspace application development. We will not have to traverse different firmware paths based on device tree or ACPI based kernels. No matter what flavor of kernel is used, objects will be represented as platform devices. The new layout is as follows: hidmam_10: hidma-mgmt@0x5A000000 { compatible = "qcom,hidma-mgmt-1.0"; ... hidma_10: hidma@0x5a010000 { compatible = "qcom,hidma-1.0"; ... } } The hidma_mgmt_init detects each instance of the hidma-mgmt-1.0 objects in device tree and calls into the channel driver to create platform devices for each child of the management object. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-05-01 04:25:28 +00:00
What: /sys/devices/platform/hidma-*/chid
/sys/devices/platform/QCOM8061:*/chid
Date: Dec 2015
KernelVersion: 4.4
dmaengine: qcom_hidma: Wrong domain name in the email address cudeaurora.org is used in place of codeaurora.org in the contact field. Signed-off-by: Amit Kumar <free.amit.kumar@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-20 13:37:35 +00:00
Contact: "Sinan Kaya <okaya@codeaurora.org>"
dmaengine: qcom_hidma: add support for object hierarchy In order to create a relationship model between the channels and the management object, we are adding support for object hierarchy to the drivers. This patch simplifies the userspace application development. We will not have to traverse different firmware paths based on device tree or ACPI based kernels. No matter what flavor of kernel is used, objects will be represented as platform devices. The new layout is as follows: hidmam_10: hidma-mgmt@0x5A000000 { compatible = "qcom,hidma-mgmt-1.0"; ... hidma_10: hidma@0x5a010000 { compatible = "qcom,hidma-1.0"; ... } } The hidma_mgmt_init detects each instance of the hidma-mgmt-1.0 objects in device tree and calls into the channel driver to create platform devices for each child of the management object. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-05-01 04:25:28 +00:00
Description:
Contains the ID of the channel within the HIDMA instance.
It is used to associate a given HIDMA channel with the
priority and weight calls in the management interface.
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