def set_rate(min_rate, max_rate):
current, lower, upper = get_rate()
#
# If an attempt is made to set the minimum rate higher than the
# currently configured maximum rate, the common clock framework will
# return an error because the new range would be invalid.
#
# Fix this by updating the maximum rate before the minimum rate in
# that case.
#
if min_rate > upper:
with debugfs.open('emc/max_rate', 'w') as fobj:
fobj.write('%u' % max_rate)
with debugfs.open('emc/min_rate', 'w') as fobj:
fobj.write('%u' % min_rate)
#
# If the new minimum rate is lower than the currently configured
# maximum rate, it's safe to write the maximum rate second.
#
if min_rate <= upper:
with debugfs.open('emc/max_rate', 'w') as fobj:
fobj.write('%u' % max_rate)
#
# Read the actual clock rate from the standard debugfs files. This
# should always be within the range given by the minimum and maximum
# rates.
#
with debugfs.open('clk/emc/clk_rate', 'r') as fobj:
rate = int(fobj.read().strip())
return rate
def emc_set_rate(rate):
with debugfs.open('emc/rate', 'w') as f:
f.write(rate)
with debugfs.open('emc/rate', 'r') as f:
rate = f.read().strip();
return rate
def get_rate():
with debugfs.open('clk/emc/clk_rate', 'r') as fobj:
current = int(fobj.read().strip())
with debugfs.open('emc/min_rate', 'r') as fobj:
min_rate = int(fobj.read().strip())
with debugfs.open('emc/max_rate', 'r') as fobj:
max_rate = int(fobj.read().strip())
return current, min_rate, max_rate
def emc_legacy(log, *args, **kwargs):
def set_rate(rate):
with debugfs.open('emc/rate', 'w') as f:
f.write(rate)
with debugfs.open('emc/rate', 'r') as f:
rate = f.read().strip()
supported_rates = []
errors = 0
with debugfs.open('emc/supported_rates') as fobj:
for line in fobj:
supported_rates.extend(line.split())
width = max([len(x) for x in supported_rates])
with debugfs.open('emc/rate') as fobj:
current = f.read().strip()
log.debug('- supported rates: (* = current)')
for rate in supported_rates:
if rate == current:
log.debug(' - %*s' % (width, rate), '*')
else:
log.debug(' - %*s' % (width, rate))
log.debug('- testing:')
for rate in supported_rates:
log.debug(' - %*s...' % (width, rate), end='')
actual = set_rate(rate)
if actual != rate:
log.cont('reported %s' % actual)
errors += 1
else:
log.cont('done')
log.debug('- resetting to old rate: %s...' % current, end='')
actual = set_rate(current)
if actual != current:
log.cont('reported %s' % actual)
else:
log.cont()
if errors != 0:
raise runner.Error('not all rate changes succeeded')
def test_set_rates(self):
supported_rates = []
errors = 0
print('EMC frequency scaling:')
print('======================')
with debugfs.open('emc/supported_rates') as f:
for line in f:
supported_rates.extend(line.split())
width = max([len(x) for x in supported_rates])
with debugfs.open('emc/rate') as f:
current = f.read().strip()
print('- supported rates: (* = current)');
for rate in supported_rates:
if rate == current:
print(' - %*s' % (width, rate), '*')
else:
print(' - %*s' % (width, rate))
print('- testing:')
for rate in supported_rates:
log.begin(' - %*s...' % (width, rate))
actual = emc_set_rate(rate)
if actual != rate:
log.end('reported %s' % actual)
errors += 1
else:
log.end()
log.begin('- resetting to old rate: %s...' % current)
actual = emc_set_rate(current)
if actual != current:
log.end('reported %s' % actual)
else:
log.end()
self.longMessage = False
self.assertEqual(errors, 0, 'not all rate changes succeeded')
def __call__(self, log, *args, **kwargs):
supported_rates = []
errors = 0
with debugfs.open('emc/supported_rates') as f:
for line in f:
supported_rates.extend(line.split())
width = max([len(x) for x in supported_rates])
with debugfs.open('emc/rate') as f:
current = f.read().strip()
log.debug('- supported rates: (* = current)');
for rate in supported_rates:
if rate == current:
log.debug(' - %*s' % (width, rate), '*')
else:
log.debug(' - %*s' % (width, rate))
log.debug('- testing:')
for rate in supported_rates:
log.debug(' - %*s...' % (width, rate), end = '')
actual = self.set_rate(rate)
if actual != rate:
log.cont('reported %s' % actual)
errors += 1
else:
log.cont('done')
log.debug('- resetting to old rate: %s...' % current, end = '')
actual = self.set_rate(current)
if actual != current:
log.cont('reported %s' % actual)
else:
log.cont()
if errors != 0:
raise runner.Error('not all rate changes succeeded')
def emc_modern(log, *args, **kwargs):
def get_rate():
with debugfs.open('clk/emc/clk_rate', 'r') as fobj:
current = int(fobj.read().strip())
with debugfs.open('emc/min_rate', 'r') as fobj:
min_rate = int(fobj.read().strip())
with debugfs.open('emc/max_rate', 'r') as fobj:
max_rate = int(fobj.read().strip())
return current, min_rate, max_rate
def set_rate(min_rate, max_rate):
current, lower, upper = get_rate()
#
# If an attempt is made to set the minimum rate higher than the
# currently configured maximum rate, the common clock framework will
# return an error because the new range would be invalid.
#
# Fix this by updating the maximum rate before the minimum rate in
# that case.
#
if min_rate > upper:
with debugfs.open('emc/max_rate', 'w') as fobj:
fobj.write('%u' % max_rate)
with debugfs.open('emc/min_rate', 'w') as fobj:
fobj.write('%u' % min_rate)
#
# If the new minimum rate is lower than the currently configured
# maximum rate, it's safe to write the maximum rate second.
#
if min_rate <= upper:
with debugfs.open('emc/max_rate', 'w') as fobj:
fobj.write('%u' % max_rate)
#
# Read the actual clock rate from the standard debugfs files. This
# should always be within the range given by the minimum and maximum
# rates.
#
with debugfs.open('clk/emc/clk_rate', 'r') as fobj:
rate = int(fobj.read().strip())
return rate
available_rates = []
errors = 0
with debugfs.open('emc/available_rates', 'r') as fobj:
for line in fobj:
rates = [int(rate) for rate in line.strip().split()]
available_rates.extend(rates)
width = max([len(str(x)) for x in available_rates])
current, min_rate, max_rate = get_rate()
log.debug('- available rates: (* = current)')
for rate in available_rates:
if rate == current:
log.debug(' - %*u' % (width, rate), '*')
else:
log.debug(' - %*u' % (width, rate))
log.debug('- testing:')
for rate in available_rates:
log.debug(' - %*u...' % (width, rate), end='')
actual = set_rate(rate, rate)
if actual != rate:
log.cont('reported %u' % actual)
errors += 1
else:
log.cont('done')
log.debug('- resetting rate: %u...' % current, end='')
actual = set_rate(current, current)
if actual != current:
log.cont('reported %u' % actual)
else:
log.cont('done')
log.debug('- resetting range: %u-%u...' % (min_rate, max_rate), end='')
actual = set_rate(min_rate, max_rate)
if actual != current:
log.cont('reported %u' % actual)
else:
log.cont('done')
if errors != 0:
raise runner.Error('not all rate changes succeeded')
def set_rate(rate):
with debugfs.open('emc/rate', 'w') as f:
f.write(rate)
with debugfs.open('emc/rate', 'r') as f:
rate = f.read().strip()
def __call__(self, log, *args, **kwargs):
board = boards.detect()
failed = False
log.debug('board:', board.name)
for device in board.devices:
path = os.path.join('/sys', 'bus', device.bus, 'devices',
device.name)
log.debug(' device: %s ... ' % path, end='', flush=True)
if os.path.exists(path):
log.cont('exists')
else:
log.cont('failed')
failed = True
continue
path = os.path.join(path, 'driver')
if os.path.exists(path):
path = os.path.realpath(path)
driver = os.path.basename(path)
log.debug(' bound: %s ... ' % driver, end='', flush=True)
if isinstance(device.driver, str):
drivers = [device.driver]
else:
drivers = device.driver
for match in drivers:
if driver == match:
log.cont('done')
break
else:
log.cont('failed')
failed = True
else:
log.debug(' unbound')
if device.driver:
failed = True
# no devices should be left in the deferred probe pending list
if debugfs.exists('devices_deferred'):
count = 0
log.debug('deferred:')
with debugfs.open('devices_deferred', 'r') as devices:
for line in devices:
log.debug(' deferred: %s' % line.strip())
count += 1
if count == 0:
log.debug(' none')
else:
failed = True
if failed:
raise runner.Error()
