Re: [SeaBIOS] [RFC][PATCH 1/2] acpi: add ASL for Embedded Controller

[li guang]

在 2013-04-17三的 07:46 -0600，Marc Jones写道：
> What EC is this for? The device and interface is defined by the spec,
> but the offsets and methods are custom for every EC.

you're mostly right,
the specific content ACPI space will vary 
for different boards, this one just for
a common case
> Marc
>
> On Wed, Apr 17, 2013 at 1:22 AM, liguang 
> wrote:
>         defined at ACPI SPEC v5 chapter 12:
>         "ACPI Embedded Controller Interface Specification"
>     Signed-off-by: liguang <[e-mail]>
>     ---
>      src/acpi-dsdt-ec.dsl |  106
>     ++++++++++++++++++++++++++++++++++++++++++++++++++
>      1 files changed, 106 insertions(+), 0 deletions(-)
>      create mode 100644 src/acpi-dsdt-ec.dsl
>
>     diff --git a/src/acpi-dsdt-ec.dsl b/src/acpi-dsdt-ec.dsl
>     new file mode 100644
>     index 0000000..6bd8edd
>     --- /dev/null
>     +++ b/src/acpi-dsdt-ec.dsl
>     @@ -0,0 +1,106 @@
>     +/*
>     + * This program is free software; you can redistribute it
>     and/or modify
>     + * it under the terms of the GNU General Public License as
>     published by
>     + * the Free Software Foundation; version 2 of the License.
>     + *
>     + * This program is distributed in the hope that it will be
>     useful,
>     + * but WITHOUT ANY WARRANTY; without even the implied
>     warranty of
>     + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
>     the
>     + * GNU General Public License for more details.
>     + *
>     + * You should have received a copy of the GNU General Public
>     License
>     + * along with this program; if not, write to the Free
>     Software
>     + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
>     02110-1301 USA
>     + */
>     +
>     +
>     +Device (EC0)
>     +{
>     +       Name (_HID, EISAID ("PNP0C09"))
>     +       Name(_UID, 1)
>     +
>     +       Method(_CRS, 0)
>     +       {
>     +       Name(BFFR, ResourceTemplate()
>     +       {
>     +               IO(Decode16, 0x62, 0x62, 0, 1)      // ACPI
>     DATA IN/OUT
>     +               IO(Decode16, 0x66, 0x66, 0, 1)      // CMD/STS
>     +               IRQ(Edge, ActiveHigh, Exclusive) {0x0B}
>     +       })
>     +    Return(BFFR)
>     +       }
>     +
>     +       OperationRegion(ECF0, EmbeddedControl, 0, 0xFF)
>     +    Field(ECF2, ByteAcc, Lock, Preserve)
>     +       {
>     +               Offset(1),
>     +               STMP,   8,      // 1,      Sensor Temperature
>     +               ACPW,   8,      // 2,      AC Power (AC
>     Present = 1, else 0)
>     +               LIDS,   8,      // 3,      Lid State (Lid Open
>     = 1, else 0)
>     +               PBNS,   8,      // 4,      Power Button State
>     (Pressed = 1, else 0)
>     +               BTST,   8,      // 5,      Battery Status
>     +               BTCR,   8,      // 6,      Battery Current
>     Rate
>     +               BTCC,   8,      // 7,      Battery Current
>     Capacity
>     +               BTVT,   8,      // 8,      Battery Voltage
>     +               offset(0x10),
>     +               SPTR,   8,      // 5,      SMBus Protocol
>     Register
>     +               SSTS,   8,      // 5,      SMBus Status
>     Register
>     +               SADR,   8,      // 6,      SMBus Address
>     Register
>     +               SCMD,   8,      // 7,      SMBus Command
>     Register
>     +               SBFR,   256,    // 8,      SMBus Block Buffer
>     +               SCNT,   8,      // 40,     SMBus Block Count
>     +       }
>     +
>     +       Method(_REG, 2)
>     +       {
>     +       }
>     +
>     +       /* AC status: present */
>     +       Method(_Q01, 0, NotSerialized)
>     +       {
>     +               Notify (AC, 0x80)
>     +       }
>     +
>     +       /* AC status: dispear*/
>     +       Method(_Q02, 0, NotSerialized)
>     +       {
>     +               Notify (AC, 0x80)
>     +       }
>     +
>     +    Method(_Q04, 0, NotSerialized)
>     +    {
>     +       Notify(LID, 0x80)
>     +    }
>     +
>     +    Method(_Q04, 0, NotSerialized)
>     +    {
>     +       Notify(LID, 0x80)
>     +    }
>     +
>     +       Device(AC)
>     +       {
>     +               Name(_HID, "ACPI0003")
>     +               Name(_UID, 0x00)
>     +               Name(_PCL, Package() { \_SB } )
>     +
>     +               Method(_PSR, 0, NotSerialized)
>     +               {
>     +                       return (ACPW)
>     +               }
>     +
>     +               Method(_STA, 0, NotSerialized)
>     +               {
>     +                       Return (0x0f)
>     +               }
>     +       }
>     +
>     +       Device(LID)
>     +       {
>     +               Name(_HID, "PNP0C0D")
>     +
>     +               Method(_LID, 0, NotSerialized)
>     +               {
>     +                       return (LIDS)
>     +               }
>     +       }
>     +}
>     --
>     1.7.2.5
>
>
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