1*2e0f8822SRafael J. WysockiWhat: /sys/devices/.../lpss_ltr/ 2*2e0f8822SRafael J. WysockiDate: March 2013 3*2e0f8822SRafael J. WysockiContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 4*2e0f8822SRafael J. WysockiDescription: 5*2e0f8822SRafael J. Wysocki The /sys/devices/.../lpss_ltr/ directory is only present for 6*2e0f8822SRafael J. Wysocki devices included into the Intel Lynxpoint Low Power Subsystem 7*2e0f8822SRafael J. Wysocki (LPSS). If present, it contains attributes containing the LTR 8*2e0f8822SRafael J. Wysocki mode and the values of LTR registers of the device. 9*2e0f8822SRafael J. Wysocki 10*2e0f8822SRafael J. WysockiWhat: /sys/devices/.../lpss_ltr/ltr_mode 11*2e0f8822SRafael J. WysockiDate: March 2013 12*2e0f8822SRafael J. WysockiContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 13*2e0f8822SRafael J. WysockiDescription: 14*2e0f8822SRafael J. Wysocki The /sys/devices/.../lpss_ltr/ltr_mode attribute contains an 15*2e0f8822SRafael J. Wysocki integer number (0 or 1) indicating whether or not the devices' 16*2e0f8822SRafael J. Wysocki LTR functionality is working in the software mode (1). 17*2e0f8822SRafael J. Wysocki 18*2e0f8822SRafael J. Wysocki This attribute is read-only. If the device's runtime PM status 19*2e0f8822SRafael J. Wysocki is not "active", attempts to read from this attribute cause 20*2e0f8822SRafael J. Wysocki -EAGAIN to be returned. 21*2e0f8822SRafael J. Wysocki 22*2e0f8822SRafael J. WysockiWhat: /sys/devices/.../lpss_ltr/auto_ltr 23*2e0f8822SRafael J. WysockiDate: March 2013 24*2e0f8822SRafael J. WysockiContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 25*2e0f8822SRafael J. WysockiDescription: 26*2e0f8822SRafael J. Wysocki The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the 27*2e0f8822SRafael J. Wysocki current value of the device's AUTO_LTR register (raw) 28*2e0f8822SRafael J. Wysocki represented as an 8-digit hexadecimal number. 29*2e0f8822SRafael J. Wysocki 30*2e0f8822SRafael J. Wysocki This attribute is read-only. If the device's runtime PM status 31*2e0f8822SRafael J. Wysocki is not "active", attempts to read from this attribute cause 32*2e0f8822SRafael J. Wysocki -EAGAIN to be returned. 33*2e0f8822SRafael J. Wysocki 34*2e0f8822SRafael J. WysockiWhat: /sys/devices/.../lpss_ltr/sw_ltr 35*2e0f8822SRafael J. WysockiDate: March 2013 36*2e0f8822SRafael J. WysockiContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 37*2e0f8822SRafael J. WysockiDescription: 38*2e0f8822SRafael J. Wysocki The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the 39*2e0f8822SRafael J. Wysocki current value of the device's SW_LTR register (raw) represented 40*2e0f8822SRafael J. Wysocki as an 8-digit hexadecimal number. 41*2e0f8822SRafael J. Wysocki 42*2e0f8822SRafael J. Wysocki This attribute is read-only. If the device's runtime PM status 43*2e0f8822SRafael J. Wysocki is not "active", attempts to read from this attribute cause 44*2e0f8822SRafael J. Wysocki -EAGAIN to be returned. 45