From: Kieran Bingham <kieran@xxxxxxxxxxx>
From: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
To handle capturing frames through the RCar VIN subsystem we must
correctly configure the device links and identify the device nodes
to capture from.
Implement a helper class to abstract and handle the VIN objects
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
---
tests/rcar_vin.py | 107 +++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 107 insertions(+)
create mode 100755 tests/rcar_vin.py
diff --git a/tests/rcar_vin.py b/tests/rcar_vin.py
new file mode 100755
index 000000000000..77923617edb6
--- /dev/null
+++ b/tests/rcar_vin.py
@@ -0,0 +1,107 @@
+#!/usr/bin/python3
+
+import os
+import glob
+
+# model strings are null terminated:
+rcar_gen3_models = [
+ 'Renesas Salvator-X board based on r8a7795 ES1.x\0',
+ 'Renesas Salvator-X 2nd version board based on r8a7795 ES2.0+\0',
+ 'Renesas Salvator-X board based on r8a7796\0',
+ 'Renesas Eagle board based on r8a77970\0',
+]
+
+rcar_gen3_vin = [
+ 'e6ef0000',
+ 'e6ef1000',
+ 'e6ef2000',
+ 'e6ef3000',
+ 'e6ef4000',
+ 'e6ef5000',
+ 'e6ef6000',
+ 'e6ef7000',
+]
+
+rcar_gen3_csi2 = [
+ 'fea80000',
+ 'fea90000',
+ 'feaa0000',
+ 'feab0000',
+]
+
+
+class MediaController(object):
+ def __init__(self, device):
+ for f in glob.glob("/dev/media*"):
+ print(f)
+ self.cmd = "/usr/bin/media-ctl -d " + device + " "
+
+ def reset(self):
+ os.system(self.cmd + "-r")
+
+
+class ADV748x(object):
+ entities = ['afe', 'hdmi', 'txa', 'txb']
+
+ def __init__(self, i2c_addr):
+ self.basename = "adv748x " + i2c_addr
+
+ def entity_name(self, entity):
+ return self.basename + " " + entity
+
+
+class RCar_VIN_G3(object):
+ def __init__(self):
+ self.model = open('/proc/device-tree/model', 'r').read()
+ if self.model not in rcar_gen3_models:
+ raise ValueError('Not a supported R-Car Gen3 platform: ' + self.model)
+
+ # Perhaps we need an interface or python bindings for media controller
+ def mc_get_mdev(self):
+ for f in glob.glob("/dev/media*"):
+ print(f)
+
+ def vin_v4l2_device(self, idx):
+ ''' Return the V4L2 device path (such as /dev/video23) for a given VIN '''
+ path = "/sys/devices/platform/soc/" + rcar_gen3_vin[idx] + ".video/video4linux/video*"
+ path = glob.glob(path)[0]
+ return "/dev/" + os.path.basename(path)
+
+ def vin_name(self, idx):
+ return "rcar_vin " + rcar_gen3_vin[idx] + ".video"
+
+ def csi2_name(self, idx):
+ return "rcar_csi2 " + rcar_gen3_csi2[idx] + ".csi2"
+
+ def hdmi_in(self):
+ print("Configure for HDMI input")
+
+
+#######################################################################################################################
+# Selftesting
+
+def selftest_MediaController():
+ mc = MediaController("/dev/media0")
+ mc.reset()
+
+
+def selftest_RCar_VIN_G3():
+ target = RCar_VIN_G3()
+ print("Detected: " + target.model)
+ print("Identifying VIN devices:")
+ for i in range(8):
+ print(" vin" + str(i) + ": " + target.vin_v4l2_device(i))
+ target.mc_get_mdev()
+ target.hdmi_in()
+
+
+def selftest_ADV748x():
+ adv = ADV748x("4-0070")
+ print("ADV748x Entities:")
+ for e in adv.entities:
+ print(" " + e + ": " + adv.entity_name(e))
+
+if __name__ == "__main__":
+ selftest_MediaController()
+ selftest_ADV748x()
+ selftest_RCar_VIN_G3()
--
git-series 0.9.1
