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Merge "drivers: qcom: cmd-db: Report if command DB is initialized as standalone"

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qctecmdr 2022-05-09 05:27:10 -07:00 committed by Gerrit - the friendly Code Review server
commit 3e081d68b4
2 changed files with 21 additions and 2 deletions
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16
drivers/soc/qcom/cmd-db.c
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@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2016-2018, 2020, The Linux Foundation. All rights reserved. */
/* Copyright (c) 2016-2018, 2020-2021, The Linux Foundation. All rights reserved. */
#include <linux/debugfs.h>
#include <linux/kernel.h>
@ -17,6 +17,7 @@
#define MAX_SLV_ID 8
#define SLAVE_ID_MASK 0x7
#define SLAVE_ID_SHIFT 16
#define CMD_DB_STANDALONE_MASK BIT(0)
/**
* struct entry_header: header for each entry in cmddb
@ -309,6 +310,16 @@ static const struct file_operations cmd_db_debugfs_ops = {
.release = single_release,
};
bool cmd_db_is_standalone(void)
{
int ret = cmd_db_ready();
u32 standalone = le32_to_cpu(cmd_db_header->reserved) &
CMD_DB_STANDALONE_MASK;
return !ret && standalone;
}
EXPORT_SYMBOL(cmd_db_is_standalone);
static int cmd_db_dev_probe(struct platform_device *pdev)
{
struct reserved_mem *rmem;
@ -334,6 +345,9 @@ static int cmd_db_dev_probe(struct platform_device *pdev)
debugfs_create_file("cmd-db", 0400, NULL, NULL, &cmd_db_debugfs_ops);
if (cmd_db_is_standalone())
pr_info("Command DB is initialized in standalone mode\n");
return 0;
}

7
include/soc/qcom/cmd-db.h
View File

@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. */
/* Copyright (c) 2016-2018, 2021, The Linux Foundation. All rights reserved. */
#ifndef __QCOM_COMMAND_DB_H__
#define __QCOM_COMMAND_DB_H__
@ -24,6 +24,8 @@ const void *cmd_db_read_aux_data(const char *resource_id, size_t *len);
enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id);
int cmd_db_ready(void);
bool cmd_db_is_standalone(void);
#else
static inline u32 cmd_db_read_addr(const char *resource_id)
{ return 0; }
@ -36,5 +38,8 @@ static inline enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id)
static inline int cmd_db_ready(void)
{ return -ENODEV; }
static inline bool cmd_db_is_standalone(void)
{ return true; }
#endif /* CONFIG_QCOM_COMMAND_DB */
#endif /* __QCOM_COMMAND_DB_H__ */