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* hwmon: (max6639) Fix PPR register initialization to set both channelsChris D Schimp2012-03-26
| | | | | | | | | | | | | | | BugLink: http://bugs.launchpad.net/bugs/954576 commit 2f2da1ac0ba5b6cc6e1957c4da5ff20e67d8442b upstream. Initialize PPR register for both channels, and set correct PPR register bits. Also remove unnecessary variable initializations. Signed-off-by: Chris D Schimp <silverchris@gmail.com> [guenter.roeck@ericsson.com: Merged two patches into one] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (max6639) Fix FAN_FROM_REG calculationChris D Schimp2012-03-26
| | | | | | | | | | | | | | | BugLink: http://bugs.launchpad.net/bugs/954576 commit b63d97a36edb1aecf8c13e5f5783feff4d64c24b upstream. RPM calculation from tachometer value does not depend on PPR. Also, do not report negative RPM values. Signed-off-by: Chris D Schimp <silverchris@gmail.com> [guenter.roeck@ericsson.com: do not report negative RPM values] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (max6639) Set reasonable default PWM frequencystigge@antcom.de2011-03-15
| | | | | | | | This patch initializes register CONFIG3 to a reasonable default PWM frequency of 25kHz, to prevent audible sound in fan. Signed-off-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: Driver for Maxim MAX6639stigge@antcom.de2011-03-15
2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller Signed-off-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>