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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
*/
#ifndef __SANDBOX_CLK_H
#define __SANDBOX_CLK_H
#include <clk.h>
#include <dt-structs.h>
#include <linux/clk-provider.h>
struct udevice;
/**
* enum sandbox_clk_id - Identity of clocks implemented by the sandbox clock
* provider.
*
* These IDs are within/relative-to the clock provider.
*/
enum sandbox_clk_id {
SANDBOX_CLK_ID_SPI,
SANDBOX_CLK_ID_I2C,
SANDBOX_CLK_ID_UART1,
SANDBOX_CLK_ID_UART2,
SANDBOX_CLK_ID_BUS,
SANDBOX_CLK_ID_COUNT,
};
/**
* enum sandbox_clk_test_id - Identity of the clocks consumed by the sandbox
* clock test device.
*
* These are the IDs the clock consumer knows the clocks as.
*/
enum sandbox_clk_test_id {
SANDBOX_CLK_TEST_ID_FIXED,
SANDBOX_CLK_TEST_ID_SPI,
SANDBOX_CLK_TEST_ID_I2C,
SANDBOX_CLK_TEST_ID_I2C_ROOT,
SANDBOX_CLK_TEST_ID_DEVM1,
SANDBOX_CLK_TEST_ID_DEVM2,
SANDBOX_CLK_TEST_ID_DEVM_NULL,
SANDBOX_CLK_TEST_ID_COUNT,
};
#define SANDBOX_CLK_TEST_NON_DEVM_COUNT SANDBOX_CLK_TEST_ID_DEVM1
struct sandbox_clk_priv {
bool probed;
ulong rate[SANDBOX_CLK_ID_COUNT];
bool enabled[SANDBOX_CLK_ID_COUNT];
bool requested[SANDBOX_CLK_ID_COUNT];
};
struct sandbox_clk_test {
struct clk clks[SANDBOX_CLK_TEST_NON_DEVM_COUNT];
struct clk *clkps[SANDBOX_CLK_TEST_ID_COUNT];
struct clk_bulk bulk;
};
/* Platform data for the sandbox fixed-rate clock driver */
struct sandbox_clk_fixed_rate_plat {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct dtd_sandbox_fixed_clock dtplat;
#endif
struct clk_fixed_rate fixed;
};
/**
* sandbox_clk_query_rate - Query the current rate of a sandbox clock.
*
* @dev: The sandbox clock provider device.
* @id: The clock to query.
* @return: The rate of the clock.
*/
ulong sandbox_clk_query_rate(struct udevice *dev, int id);
/**
* sandbox_clk_query_enable - Query the enable state of a sandbox clock.
*
* @dev: The sandbox clock provider device.
* @id: The clock to query.
* @return: The rate of the clock.
*/
int sandbox_clk_query_enable(struct udevice *dev, int id);
/**
* sandbox_clk_query_requested - Query the requested state of a sandbox clock.
*
* @dev: The sandbox clock provider device.
* @id: The clock to query.
* @return: The rate of the clock.
*/
int sandbox_clk_query_requested(struct udevice *dev, int id);
/**
* sandbox_clk_test_get - Ask the sandbox clock test device to request its
* clocks.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_get(struct udevice *dev);
/**
* sandbox_clk_test_devm_get - Ask the sandbox clock test device to request its
* clocks using the managed API.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_devm_get(struct udevice *dev);
/**
* sandbox_clk_test_get_bulk - Ask the sandbox clock test device to request its
* clocks with the bulk clk API.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_get_bulk(struct udevice *dev);
/**
* sandbox_clk_test_get_rate - Ask the sandbox clock test device to query a
* clock's rate.
*
* @dev: The sandbox clock test (client) device.
* @id: The test device's clock ID to query.
* @return: The rate of the clock.
*/
ulong sandbox_clk_test_get_rate(struct udevice *dev, int id);
/**
* sandbox_clk_test_round_rate - Ask the sandbox clock test device to round a
* clock's rate.
*
* @dev: The sandbox clock test (client) device.
* @id: The test device's clock ID to configure.
* @return: The rounded rate of the clock.
*/
ulong sandbox_clk_test_round_rate(struct udevice *dev, int id, ulong rate);
/**
* sandbox_clk_test_set_rate - Ask the sandbox clock test device to set a
* clock's rate.
*
* @dev: The sandbox clock test (client) device.
* @id: The test device's clock ID to configure.
* @return: The new rate of the clock.
*/
ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate);
/**
* sandbox_clk_test_enable - Ask the sandbox clock test device to enable a
* clock.
*
* @dev: The sandbox clock test (client) device.
* @id: The test device's clock ID to configure.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_enable(struct udevice *dev, int id);
/**
* sandbox_clk_test_enable_bulk - Ask the sandbox clock test device to enable
* all clocks in it's clock bulk struct.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_enable_bulk(struct udevice *dev);
/**
* sandbox_clk_test_disable - Ask the sandbox clock test device to disable a
* clock.
*
* @dev: The sandbox clock test (client) device.
* @id: The test device's clock ID to configure.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_disable(struct udevice *dev, int id);
/**
* sandbox_clk_test_disable_bulk - Ask the sandbox clock test device to disable
* all clocks in it's clock bulk struct.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_disable_bulk(struct udevice *dev);
/**
* sandbox_clk_test_release_bulk - Ask the sandbox clock test device to release
* all clocks in it's clock bulk struct.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_release_bulk(struct udevice *dev);
/**
* sandbox_clk_test_valid - Ask the sandbox clock test device to check its
* clocks are valid.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
int sandbox_clk_test_valid(struct udevice *dev);
/**
* sandbox_clk_test_valid - Ask the sandbox clock test device to check its
* clocks are valid.
*
* @dev: The sandbox clock test (client) device.
* @return: 0 if OK, or a negative error code.
*/
struct clk *sandbox_clk_test_get_devm_clk(struct udevice *dev, int id);
#endif
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