forked from rrcarlosr/Jetpack
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
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/*
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* Copyright (c) 2016, NVIDIA CORPORATION.
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#ifndef __SANDBOX_CLK_H
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#define __SANDBOX_CLK_H
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#include <common.h>
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struct udevice;
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/**
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* enum sandbox_clk_id - Identity of clocks implemented by the sandbox clock
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* provider.
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*
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* These IDs are within/relative-to the clock provider.
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*/
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enum sandbox_clk_id {
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SANDBOX_CLK_ID_SPI,
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SANDBOX_CLK_ID_I2C,
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SANDBOX_CLK_ID_COUNT,
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};
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/**
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* enum sandbox_clk_test_id - Identity of the clocks consumed by the sandbox
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* clock test device.
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*
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* These are the IDs the clock consumer knows the clocks as.
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*/
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enum sandbox_clk_test_id {
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SANDBOX_CLK_TEST_ID_FIXED,
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SANDBOX_CLK_TEST_ID_SPI,
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SANDBOX_CLK_TEST_ID_I2C,
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SANDBOX_CLK_TEST_ID_COUNT,
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};
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/**
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* sandbox_clk_query_rate - Query the current rate of a sandbox clock.
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*
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* @dev: The sandbox clock provider device.
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* @id: The clock to query.
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* @return: The rate of the clock.
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*/
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ulong sandbox_clk_query_rate(struct udevice *dev, int id);
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/**
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* sandbox_clk_query_enable - Query the enable state of a sandbox clock.
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*
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* @dev: The sandbox clock provider device.
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* @id: The clock to query.
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* @return: The rate of the clock.
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*/
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int sandbox_clk_query_enable(struct udevice *dev, int id);
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/**
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* sandbox_clk_test_get - Ask the sandbox clock test device to request its
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* clocks.
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*
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* @dev: The sandbox clock test (client) devivce.
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* @return: 0 if OK, or a negative error code.
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*/
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int sandbox_clk_test_get(struct udevice *dev);
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/**
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* sandbox_clk_test_get_rate - Ask the sandbox clock test device to query a
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* clock's rate.
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*
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* @dev: The sandbox clock test (client) devivce.
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* @id: The test device's clock ID to query.
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* @return: The rate of the clock.
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*/
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ulong sandbox_clk_test_get_rate(struct udevice *dev, int id);
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/**
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* sandbox_clk_test_set_rate - Ask the sandbox clock test device to set a
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* clock's rate.
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*
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* @dev: The sandbox clock test (client) devivce.
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* @id: The test device's clock ID to configure.
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* @return: The new rate of the clock.
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*/
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ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate);
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/**
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* sandbox_clk_test_enable - Ask the sandbox clock test device to enable a
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* clock.
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*
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* @dev: The sandbox clock test (client) devivce.
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* @id: The test device's clock ID to configure.
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* @return: 0 if OK, or a negative error code.
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*/
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int sandbox_clk_test_enable(struct udevice *dev, int id);
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/**
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* sandbox_clk_test_disable - Ask the sandbox clock test device to disable a
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* clock.
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*
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* @dev: The sandbox clock test (client) devivce.
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* @id: The test device's clock ID to configure.
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* @return: 0 if OK, or a negative error code.
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*/
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int sandbox_clk_test_disable(struct udevice *dev, int id);
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/**
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* sandbox_clk_test_free - Ask the sandbox clock test device to free its
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* clocks.
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*
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* @dev: The sandbox clock test (client) devivce.
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* @return: 0 if OK, or a negative error code.
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*/
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int sandbox_clk_test_free(struct udevice *dev);
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#endif
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