64591 2004-09-18 22:21 0000 pbbuttonsd ambient light sensor fix 2004-10-05 19:29:57 0000 1 1 1 Unclassified Gentoo Linux Applications 2004.0 PPC Linux RESOLVED UPSTREAM P2 normal --- 1 jrray@jrray.org ppc@gentoo.org jrray@jrray.org 2004-09-18 22:21:26 0000 On my new 15" powerbook g4, pbbuttonsd fails to properly detect the correct i2c device for the ambient light sensor and also the keyboard illumination controls. Both the unmasked 0.6.1 and masked 0.6.5 versions have the same problem. When it goes to detect which device to use, it starts with dev 0 and works up. /dev/i2c-0 looks valid but the ambient light sensor always reports a light level of 0. When I change the code so that it starts searching at dev 1, it discovers the correct device at /dev/i2c-4. The ambient light sensor reports valid data and the keyboard illumination works properly. E.g.: diff -rNu pbbuttonsd-0.6.5/src/module_pmac.c pbbuttonsd-0.6.5-jrray/src/module_pmac.c --- pbbuttonsd-0.6.5/src/module_pmac.c 2004-09-08 13:01:41.000000000 -0700 +++ pbbuttonsd-0.6.5-jrray/src/module_pmac.c 2004-09-18 21:26:35.431804672 -0700 @@ -979,7 +979,7 @@ char i2cdevice[20], buf[4]; int n, fd, rc = -E_NOCHAR; - for(n=0; n < 256; n++) { + for(n=1; n < 256; n++) { snprintf(i2cdevice, 19, "/dev/i2c-%d", n ); if ((fd = open (i2cdevice, O_RDWR)) >= 0 ) { if (ioctl (fd, I2C_SLAVE, LMU_ADDR) >= 0 ) { Based on this mailing list thread: http://lists.debian.org/debian-powerpc/2004/01/msg00546.html It seems that some powerbooks require /dev/i2c-4 and some require /dev/i2c-0. The pbbuttonsd code should probably be modified to make this a user-configurable option. - Robert puggy@gentoo.org 2004-09-20 05:02:42 0000 This should be reported upstream. pvdabeel@gentoo.org 2004-09-22 14:40:11 0000 Puggy, can you apply this one-line patch in cvs and report upstream? jrray@jrray.org 2004-09-23 00:13:55 0000 I'm fairly certain that applying my patch will break pbbuttonsd for some people while fixing it for others. The upstream developer will probably know better how to fix it for everyone. pvdabeel@gentoo.org 2004-09-24 15:25:51 0000 I've pointed the upstream developer to this bug & patch. Thnxs for the feedback. pvdabeel@gentoo.org 2004-09-25 04:17:32 0000 Created an attachment (id=40364) upstream patch Upstream test request pylon@gentoo.org 2004-10-05 19:29:57 0000 I added the patch as long as it is not resolved upstream. 40364 2004-09-25 04:17 0000 upstream patch pbbuttonsd.patch text/plain ZGlmZiAtTmF1ciBwYmJ1dHRvbnNkLTAuNi41L3NyYy9pbnB1dF9tYW5hZ2VyLmMgcGJidXR0b25z ZC0wLjYuNS1maXhlZC9zcmMvaW5wdXRfbWFuYWdlci5jCi0tLSBwYmJ1dHRvbnNkLTAuNi41L3Ny Yy9pbnB1dF9tYW5hZ2VyLmMJRnJpIEp1bCAxNiAxODo1MjowMiAyMDA0CisrKyBwYmJ1dHRvbnNk LTAuNi41LWZpeGVkL3NyYy9pbnB1dF9tYW5hZ2VyLmMJRnJpIFNlcCAyNCAxNzoyNTo1MSAyMDA0 CkBAIC0yMDQsNyArMjA0LDcgQEAKIAkJc3ByaW50ZihmaWxlbmFtZSwgIi9kZXYvaW5wdXQvZXZl bnQlZCIsIG4pOwogCQlpZiAoKGZkID0gb3BlbihmaWxlbmFtZSwgT19SRE9OTFkpKSA+PSAwKSB7 CiAJCQlpb2N0bChmZCwgRVZJT0NHQklUKDAsIEVWX01BWCksIGJpdCk7Ci0JCSAgICBpZiAodGVz dF9iaXQoRVZfS0VZLCBiaXQpICYmIHRlc3RfYml0KEVWX1JFUCwgYml0KSkgeworCQkJaWYgKHRl 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