Author: hiren
Date: Fri May 17 17:16:29 2013
New Revision: 250743
URL: http://svnweb.freebsd.org/changeset/base/250743

Log:
  MFC: r250487
  
  Adding a detach method to p4tcc driver.
  
  PR:           118739
  Submitted by: Dan Lukes <d...@obluda.cz> (earlier version)
  Reviewed by:  jhb
  Approved by:  sbruno (mentor)

Modified:
  stable/8/sys/x86/cpufreq/p4tcc.c
Directory Properties:
  stable/8/   (props changed)
  stable/8/sys/   (props changed)
  stable/8/sys/x86/   (props changed)

Modified: stable/8/sys/x86/cpufreq/p4tcc.c
==============================================================================
--- stable/8/sys/x86/cpufreq/p4tcc.c    Fri May 17 15:20:45 2013        
(r250742)
+++ stable/8/sys/x86/cpufreq/p4tcc.c    Fri May 17 17:16:29 2013        
(r250743)
@@ -73,6 +73,7 @@ static int    p4tcc_features(driver_t *driv
 static void    p4tcc_identify(driver_t *driver, device_t parent);
 static int     p4tcc_probe(device_t dev);
 static int     p4tcc_attach(device_t dev);
+static int     p4tcc_detach(device_t dev);
 static int     p4tcc_settings(device_t dev, struct cf_setting *sets,
                    int *count);
 static int     p4tcc_set(device_t dev, const struct cf_setting *set);
@@ -84,6 +85,7 @@ static device_method_t p4tcc_methods[] =
        DEVMETHOD(device_identify,      p4tcc_identify),
        DEVMETHOD(device_probe,         p4tcc_probe),
        DEVMETHOD(device_attach,        p4tcc_attach),
+       DEVMETHOD(device_detach,        p4tcc_detach),
 
        /* cpufreq interface */
        DEVMETHOD(cpufreq_drv_set,      p4tcc_set),
@@ -213,6 +215,24 @@ p4tcc_attach(device_t dev)
 }
 
 static int
+p4tcc_detach(device_t dev)
+{
+       struct cf_setting set;
+       int error;
+
+       error = cpufreq_unregister(dev);
+       if (error)
+               return (error);
+
+       /*
+        * Before we finish detach, switch to Automatic mode.
+        */
+       set.freq = 10000;
+       p4tcc_set(dev, &set);
+       return(0);
+}
+
+static int
 p4tcc_settings(device_t dev, struct cf_setting *sets, int *count)
 {
        struct p4tcc_softc *sc;
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