src/ec/compal/ene932/acpi/battery.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 // Scope (EC0)
   4
   5 Device (BATX)
   6 {
   7         Name (_HID, EISAID ("PNP0C0A"))
   8         Name (_UID, 1)
   9         Name (_PCL, Package () { \_SB })
  10
  11         Name (PBIF, Package () {
  12                 0x00000001,  // Power Unit: mAh
  13                 0xFFFFFFFF,  // Design Capacity
  14                 0xFFFFFFFF,  // Last Full Charge Capacity
  15                 0x00000001,  // Battery Technology: Rechargeable
  16                 0xFFFFFFFF,  // Design Voltage
  17                 0x00000003,  // Design Capacity of Warning
  18                 0xFFFFFFFF,  // Design Capacity of Low
  19                 0x00000001,  // Capacity Granularity 1
  20                 0x00000001,  // Capacity Granularity 2
  21                 "",          // Model Number
  22                 "",          // Serial Number
  23                 "LION",      // Battery Type
  24                 ""           // OEM Information
  25         })
  26
  27         Name (PBST, Package () {
  28                 0x00000000,  // Battery State
  29                 0xFFFFFFFF,  // Battery Present Rate
  30                 0xFFFFFFFF,  // Battery Remaining Capacity
  31                 0xFFFFFFFF,  // Battery Present Voltage
  32         })
  33         Name (BTNM, 0)  // Battery number
  34
  35         // Workaround for full battery status, enabled by default
  36         Name (BFWK, 1)
  37
  38         // Method to enable full battery workaround
  39         Method (BFWE)
  40         {
  41                 BFWK = 1
  42         }
  43
  44         // Method to disable full battery workaround
  45         Method (BFWD)
  46         {
  47                 BFWK = 0
  48         }
  49
  50         Method (_STA, 0, Serialized)
  51         {
  52                 If (BOL0) {
  53                         Return (0x1F)
  54                 } Else {
  55                         Return (0x0F)
  56                 }
  57         }
  58
  59         Method (_BIF, 0, Serialized)
  60         {
  61                 // Update fields from EC
  62                 PBIF [0] = BAM0
  63                 PBIF [1] = BDC0
  64                 PBIF [2] = BFC0
  65                 PBIF [4] = BDV0
  66                 Local1 = BFC0 / 100
  67                 Local1 *= 10
  68                 PBIF [5] = Local1
  69                 Local1 = BFC0 / 100
  70                 Local1 *= 3
  71                 PBIF [6] = Local1
  72
  73                 PBIF [9] = ToString (Concatenate (BATD, 0x00))  // model
  74                 PBIF [10] = ToHexString (BSN0)  // serial
  75                 PBIF [12] = ToString (BMFN)  // vendor
  76
  77                 BTNM = BDN0     // Save the battery number
  78
  79                 Return (PBIF)
  80         }
  81
  82         Method (_BST, 0, Serialized)
  83         {
  84                 //
  85                 // 0: BATTERY STATE
  86                 //
  87                 // bit 0 = discharging
  88                 // bit 1 = charging
  89                 // bit 2 = critical level
  90                 //
  91
  92                 // Get battery state from EC and save it for the charging workaround
  93                 Local0 = BST0
  94                 PBST [0] = Local0
  95
  96                 //
  97                 // 1: BATTERY PRESENT RATE/CURRENT
  98                 //
  99
 100                 Local1 = BAC0
 101                 Local1 = 0xFFFF - Local1
 102                 PBST [1] = Local1
 103
 104                 //
 105                 // 2: BATTERY REMAINING CAPACITY
 106                 //
 107                 Local1 = BFC0 * GAU0
 108                 Local2 = Local1 % 100
 109                 Local1 /= 100
 110
 111                 If (BFWK && ADPT && !Local0) {
 112                         // On AC power and battery is neither charging
 113                         // nor discharging.  Linux expects a full battery
 114                         // to report same capacity as last full charge.
 115                         // https://bugzilla.kernel.org/show_bug.cgi?id=12632
 116                         Local2 = GAU0
 117
 118                         // See if within ~3% of full
 119                         Local3 = Local2 >> 5
 120                         If ((Local1 > (Local2 - Local3)) && (Local1 < (Local2 + Local3)))
 121                         {
 122                                 Local1 = Local2
 123                         }
 124                 }
 125                 PBST [2] = Local1
 126
 127                 //
 128                 // 3: BATTERY PRESENT VOLTAGE
 129                 //
 130                 PBST [3] = BPV0
 131
 132                 // Check the Battery Number
 133                 If(BDN0 != BTNM) {
 134                         Notify(BATX, 0x81)
 135                 }
 136
 137                 Return (PBST)
 138         }
 139 }