From 96ca7ee67a36605a33de8d57eb8e8d3998bc6427 Mon Sep 17 00:00:00 2001
From: Michał Masłowski <mtjm@mtjm.eu>
Date: Wed, 03 Sep 2014 14:30:21 -0400
Subject: Merge libreboot-6b6.
Conflicts:
buildrom-withgrub
---
(limited to 'resources/utilities/i945gpu')
diff --git a/resources/utilities/i945gpu/intel-regs.py b/resources/utilities/i945gpu/intel-regs.py
index f16a8d7..5767d4a 100755
--- a/resources/utilities/i945gpu/intel-regs.py
+++ b/resources/utilities/i945gpu/intel-regs.py
@@ -27,17 +27,31 @@ _MEMORY = re.compile(r"^\s+Memory\s+at\s+([0-9a-f]+)\s+\(32-bit, non-prefetchabl
def get_pci_data():
# lspci has a machine readable format, but it doesn't have the needed data.
- for devid in "8086:27a2", "8086:27a6":
+ for devid in ("8086:27a2",):
lspci = subprocess.Popen(("lspci", "-vn", "-d", devid),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
+ address = None
+ memory = None
for line in lspci.communicate()[0].split("\n"):
+ if line and line[0] == "0":
+ address = line.split()[0]
match = _MEMORY.match(line)
if match is not None:
- yield int(match.group(1), 16)
+ memory = int(match.group(1), 16)
break
+ yield (address, memory)
-func0, func1 = list(get_pci_data())
+
+def config_byte(address, offset):
+ """Return byte at specified offset in PCI config space of device
+ identified by address."""
+ with open("/sys/bus/pci/devices/0000:%s/config" % address, "rb") as f:
+ f.seek(offset)
+ return struct.unpack("=B", f.read(1))
+
+
+addr0, func0 = list(get_pci_data())[0]
def read32(fo, base, offset):
@@ -91,3 +105,4 @@ if __name__ == "__main__":
print "backlight modulation frequency = %f Hz" % mod_freq
print "duty cycle = %d%%" % (100.0 * (backlight & 0xffff)
/ (backlight >> 16))
+ print "legacy backlight brightness = 0x%02x" % config_byte(addr0, 0xf4)
--
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