mpm: mpm reorganization

1 files changed, 42 insertions, 0 deletions

diff --git a/mpm/python/usrp_mpm/periph_manager/udev.py b/mpm/python/usrp_mpm/periph_manager/udev.py
new file mode 100644
index 000000000..014e18ede
--- /dev/null
+++ b/mpm/python/usrp_mpm/periph_manager/udev.py
@@ -0,0 +1,42 @@
+#
+# Copyright 2017 Ettus Research (National Instruments)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import pyudev
+
+
+def get_eeprom(address):
+    """
+    Return EEPROM device path for a given I2C address
+    """
+    context = pyudev.Context()
+    parent = pyudev.Device.from_name(context, "platform", address)
+    paths = [device.dev_node if device.dev_node is not None else device.sys_path
+             for device in context.list_devices(parent=parent, subsystem="nvmem")]
+    if len(paths) != 1:
+        raise Exception("{0} paths to EEPROM found!".format(len(paths)))
+    return paths[0]
+
+
+def get_spidev_nodes(spi_master):
+    """
+    Return found spidev device paths for a given SPI master
+    """
+    context = pyudev.Context()
+    parent = pyudev.Device.from_name(context, "platform", spi_master)
+    paths = [device.dev_node if device.dev_node is not None else device.sys_path
+             for device in context.list_devices(parent=parent, subsystem="spidev")]
+    return paths