96 lines
3.0 KiB
Plaintext
96 lines
3.0 KiB
Plaintext
/** @file
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ACPI functions that drive pin states
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2017 - 2019 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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#define PIN_GPIO_PAD_INDEX 0
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#define PIN_GPIO_POLARITY_INDEX 1
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//
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// This library provides functions that configure pin states.
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//
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// GPIO package definition:
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// Package() {
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// GpioPad : IntObj
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// GpioActiveStatePolarity : IntObj
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// }
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//
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//
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// GPIO library imports
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//
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Scope(\) {
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//
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// Note this is not a real power resource we simply use this to declare new named scope
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//
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PowerResource(PIN, 0, 0) {
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//
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// Check pin status function
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// @param[in] Arg0 Pin descriptor package
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//
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// @return GPIO pin status relative to GpioActiveStatePolarity value
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//
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Method(STA, 1, Serialized) {
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If(LEqual(\_SB.GGOV(DeRefOf(Index(Arg0, PIN_GPIO_PAD_INDEX))), DeRefOf(Index(Arg0, PIN_GPIO_POLARITY_INDEX)))) {
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Return(1)
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} Else {
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Return(0)
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}
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}
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//
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// Drive pin to active state function.
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// @param[in] Arg0 Pin descriptor package
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//
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Method(ON, 1, Serialized) {
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\_SB.SGOV(DeRefOf(Index(Arg0, PIN_GPIO_PAD_INDEX)), DeRefOf(Index(Arg0, PIN_GPIO_POLARITY_INDEX)))
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}
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//
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// Drive pin to inactive state.
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// @param[in] Arg0 Pin descriptor package
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//
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Method(OFF, 1, Serialized) {
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\_SB.SGOV(DeRefOf(Index(Arg0, PIN_GPIO_PAD_INDEX)), Not(DeRefOf(Index(Arg0, PIN_GPIO_POLARITY_INDEX))))
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}
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// Dummy standard methods for OSPM.
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// PowerResource is required to implement those.
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Method(_STA) {Return(0)}
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Method(_ON) {}
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Method(_OFF) {}
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}
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}
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