| Stephen Warren | a962243 | 2016-06-17 09:44:00 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, NVIDIA CORPORATION. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0 |
| 5 | */ |
| 6 | |
| 7 | #ifndef __SANDBOX_CLK_H |
| 8 | #define __SANDBOX_CLK_H |
| 9 | |
| 10 | #include <common.h> |
| 11 | |
| 12 | struct udevice; |
| 13 | |
| 14 | /** |
| 15 | * enum sandbox_clk_id - Identity of clocks implemented by the sandbox clock |
| 16 | * provider. |
| 17 | * |
| 18 | * These IDs are within/relative-to the clock provider. |
| 19 | */ |
| 20 | enum sandbox_clk_id { |
| 21 | SANDBOX_CLK_ID_SPI, |
| 22 | SANDBOX_CLK_ID_I2C, |
| 23 | |
| 24 | SANDBOX_CLK_ID_COUNT, |
| 25 | }; |
| 26 | |
| 27 | /** |
| 28 | * enum sandbox_clk_test_id - Identity of the clocks consumed by the sandbox |
| 29 | * clock test device. |
| 30 | * |
| 31 | * These are the IDs the clock consumer knows the clocks as. |
| 32 | */ |
| 33 | enum sandbox_clk_test_id { |
| 34 | SANDBOX_CLK_TEST_ID_FIXED, |
| 35 | SANDBOX_CLK_TEST_ID_SPI, |
| 36 | SANDBOX_CLK_TEST_ID_I2C, |
| 37 | |
| 38 | SANDBOX_CLK_TEST_ID_COUNT, |
| 39 | }; |
| 40 | |
| 41 | /** |
| 42 | * sandbox_clk_query_rate - Query the current rate of a sandbox clock. |
| 43 | * |
| 44 | * @dev: The sandbox clock provider device. |
| 45 | * @id: The clock to query. |
| 46 | * @return: The rate of the clock. |
| 47 | */ |
| 48 | ulong sandbox_clk_query_rate(struct udevice *dev, int id); |
| 49 | /** |
| 50 | * sandbox_clk_query_enable - Query the enable state of a sandbox clock. |
| 51 | * |
| 52 | * @dev: The sandbox clock provider device. |
| 53 | * @id: The clock to query. |
| 54 | * @return: The rate of the clock. |
| 55 | */ |
| 56 | int sandbox_clk_query_enable(struct udevice *dev, int id); |
| 57 | |
| 58 | /** |
| 59 | * sandbox_clk_test_get - Ask the sandbox clock test device to request its |
| 60 | * clocks. |
| 61 | * |
| 62 | * @dev: The sandbox clock test (client) devivce. |
| 63 | * @return: 0 if OK, or a negative error code. |
| 64 | */ |
| 65 | int sandbox_clk_test_get(struct udevice *dev); |
| 66 | /** |
| 67 | * sandbox_clk_test_get_rate - Ask the sandbox clock test device to query a |
| 68 | * clock's rate. |
| 69 | * |
| 70 | * @dev: The sandbox clock test (client) devivce. |
| 71 | * @id: The test device's clock ID to query. |
| 72 | * @return: The rate of the clock. |
| 73 | */ |
| 74 | ulong sandbox_clk_test_get_rate(struct udevice *dev, int id); |
| 75 | /** |
| 76 | * sandbox_clk_test_set_rate - Ask the sandbox clock test device to set a |
| 77 | * clock's rate. |
| 78 | * |
| 79 | * @dev: The sandbox clock test (client) devivce. |
| 80 | * @id: The test device's clock ID to configure. |
| 81 | * @return: The new rate of the clock. |
| 82 | */ |
| 83 | ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate); |
| 84 | /** |
| 85 | * sandbox_clk_test_enable - Ask the sandbox clock test device to enable a |
| 86 | * clock. |
| 87 | * |
| 88 | * @dev: The sandbox clock test (client) devivce. |
| 89 | * @id: The test device's clock ID to configure. |
| 90 | * @return: 0 if OK, or a negative error code. |
| 91 | */ |
| 92 | int sandbox_clk_test_enable(struct udevice *dev, int id); |
| 93 | /** |
| 94 | * sandbox_clk_test_disable - Ask the sandbox clock test device to disable a |
| 95 | * clock. |
| 96 | * |
| 97 | * @dev: The sandbox clock test (client) devivce. |
| 98 | * @id: The test device's clock ID to configure. |
| 99 | * @return: 0 if OK, or a negative error code. |
| 100 | */ |
| 101 | int sandbox_clk_test_disable(struct udevice *dev, int id); |
| 102 | /** |
| 103 | * sandbox_clk_test_free - Ask the sandbox clock test device to free its |
| 104 | * clocks. |
| 105 | * |
| 106 | * @dev: The sandbox clock test (client) devivce. |
| 107 | * @return: 0 if OK, or a negative error code. |
| 108 | */ |
| 109 | int sandbox_clk_test_free(struct udevice *dev); |
| 110 | |
| 111 | #endif |