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Command DB is a simple database in the shared memory of QCOM SoCs, that provides information regarding shared resources. Some shared resources in the SoC have properties that are probed dynamically at boot by the remote processor. The information pertaining to the SoC and the platform are made available in the shared memory. Drivers can query this information using predefined strings. Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org> Signed-off-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. */
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#ifndef __QCOM_COMMAND_DB_H__
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#define __QCOM_COMMAND_DB_H__
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enum cmd_db_hw_type {
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CMD_DB_HW_INVALID = 0,
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CMD_DB_HW_MIN = 3,
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CMD_DB_HW_ARC = CMD_DB_HW_MIN,
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CMD_DB_HW_VRM = 4,
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CMD_DB_HW_BCM = 5,
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CMD_DB_HW_MAX = CMD_DB_HW_BCM,
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CMD_DB_HW_ALL = 0xff,
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};
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#if IS_ENABLED(CONFIG_QCOM_COMMAND_DB)
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u32 cmd_db_read_addr(const char *resource_id);
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int cmd_db_read_aux_data(const char *resource_id, u8 *data, size_t len);
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size_t cmd_db_read_aux_data_len(const char *resource_id);
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enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id);
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int cmd_db_ready(void);
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#else
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static inline u32 cmd_db_read_addr(const char *resource_id)
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{ return 0; }
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static inline int cmd_db_read_aux_data(const char *resource_id, u8 *data,
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size_t len)
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{ return -ENODEV; }
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static inline size_t cmd_db_read_aux_data_len(const char *resource_id)
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{ return -ENODEV; }
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static inline enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id)
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{ return -ENODEV; }
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static inline int cmd_db_ready(void)
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{ return -ENODEV; }
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#endif /* CONFIG_QCOM_COMMAND_DB */
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#endif /* __QCOM_COMMAND_DB_H__ */
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