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# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from _hardware import HardwareException, Expectation
from _hardware_android import HardwareAndroid
CPU_CLOCK_RATE = 1836000
GPU_EMC_PROFILE = '0c: core 921 MHz emc 1600 MHz a A d D *'
GPU_EMC_PROFILE_ID = '0c'
class HardwarePixelC(HardwareAndroid):
def __init__(self, adb):
HardwareAndroid.__init__(self, adb)
def __enter__(self):
self._lock_clocks()
return HardwareAndroid.__enter__(self)
def __exit__(self, exception_type, exception_value, exception_traceback):
HardwareAndroid.__exit__(self, exception_type,
exception_value, exception_traceback)
self._unlock_clocks()
def _lock_clocks(self):
if not self._is_root:
return
# lock cpu clocks.
self._adb.shell('''\
for N in $(seq 0 3); do
echo userspace > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_governor
echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_setspeed
done''' % CPU_CLOCK_RATE)
# lock gpu/emc clocks.
self._adb.shell('''\
chown root:root /sys/devices/57000000.gpu/pstate
echo %s > /sys/devices/57000000.gpu/pstate''' % GPU_EMC_PROFILE_ID)
def _unlock_clocks(self):
if not self._is_root:
return
# unlock gpu/emc clocks.
self._adb.shell('''\
echo auto > /sys/devices/57000000.gpu/pstate
chown system:system /sys/devices/57000000.gpu/pstate''')
# unlock cpu clocks.
self._adb.shell('''\
for N in $(seq 0 3); do
echo 0 > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_setspeed
echo interactive > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_governor
done''')
def sanity_check(self):
HardwareAndroid.sanity_check(self)
if not self._is_root:
return
# only issue one shell command in an attempt to minimize interference.
result = self._adb.check_lines('''\
cat /sys/class/power_supply/bq27742-0/capacity \
/sys/class/thermal/thermal_zone7/temp \
/sys/class/thermal/thermal_zone0/temp \
/sys/class/thermal/thermal_zone1/temp \
/sys/class/thermal/thermal_zone7/cdev1/cur_state \
/sys/class/thermal/thermal_zone7/cdev0/cur_state
for N in $(seq 0 3); do
cat /sys/devices/system/cpu/cpu$N/cpufreq/scaling_cur_freq
done
cat /sys/devices/57000000.gpu/pstate | grep \*$''')
expectations = \
[Expectation(int, min_value=30, name='battery', sleeptime=30*60),
Expectation(int, max_value=40000, name='skin temperature'),
Expectation(int, max_value=86000, name='cpu temperature'),
Expectation(int, max_value=87000, name='gpu temperature'),
Expectation(int, exact_value=0, name='cpu throttle'),
Expectation(int, exact_value=0, name='gpu throttle')] + \
[Expectation(int, exact_value=CPU_CLOCK_RATE,
name='cpu_%i clock rate' % i, sleeptime=30)
for i in range(4)] + \
[Expectation(str, exact_value=GPU_EMC_PROFILE, name='gpu/emc profile')]
Expectation.check_all(expectations, result)
def sleep(self, sleeptime):
self._unlock_clocks()
HardwareAndroid.sleep(self, sleeptime)
self._lock_clocks()
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