sdio

Probes all SDIO devices listed in the sysfs /sys/bus/sdio/devices/.

Function Arguments

Name	Type	Description
dir_path	str, None	(optional; default: None) The path used to search for device sysfs data. First all symlinks are resolved, to the the “real” path. Then iteratively search toward parent folder until the remaining path contains the relevent data fields.

Description

This function goes through /sys/bus/sdio/devices/ to read attributes of each SDIO device listed there. Each result should contain these fields:

• device_path: Pathname of the sysfs directory.

• vendor

• device

Examples

Let’s say the Chromebook has two SDIO devices. One of which (at /sys/bus/sdio/devices/mmc1:0001:1) has the attributes:

• vendor=0x0123

• device=0x4567

And the other one (at /sys/bus/sdio/devices/mmc1:0002:1) has the attributes:

• vendor=0x0246

• device=0x1357

Then the probe statement:

{
  "eval": "sdio"
}

will have the corresponding probed result:

[
  {
    "bus_type": "sdio",
    "vendor": "0123",
    "device": "4567"
  },
  {
    "bus_type": "sdio",
    "vendor": "0246",
    "device": "1357"
  }
]

To verify if the Chromebook has SDIO device which vendor is 0x0246, you can write a probe statement like:

{
  "eval": "sdio",
  "expect": {
    "vendor": "0246"
  }
}

The corresponding probed result will be empty if and only if there’s no SDIO device which vendor is 0x0246 found.