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soc: qcom: cmd-db: Add cmd_db_read_slave_id() & cmd_db_read_aux_data() functions

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Partially reverted commit "soc: qcom: cmd-db: drop unused
functions" by restoring only the cmd_db_read_slave_id() and
cmd_db_read_aux_data() functions, which were removed in that
commit. These functions are required for the RPMH Power Domain
Driver.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Casey Connolly <casey.connolly@linaro.org>
Signed-off-by: Balaji Selvanathan <balaji.selvanathan@oss.qualcomm.com>
Signed-off-by: Aswin Murugan <aswin.murugan@oss.qualcomm.com>
Reviewed-by: Casey Connolly <casey.connolly@linaro.org>> ---
Link: https://patch.msgid.link/20251113113427.2218045-2-aswin.murugan@oss.qualcomm.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Aswin Murugan
2025-11-13 17:04:23 +05:30
committed by Neil Armstrong
parent 96edadab54
commit a264c0454b
2 changed files with 47 additions and 0 deletions
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45
drivers/soc/qcom/cmd-db.c
View File

@@ -183,6 +183,51 @@ u32 cmd_db_read_addr(const char *id)
}
EXPORT_SYMBOL_GPL(cmd_db_read_addr);
/**
* cmd_db_read_slave_id - Get the slave ID for a given resource address
*
* @id: Resource id to query the DB for version
*
* Return: cmd_db_hw_type enum on success, CMD_DB_HW_INVALID on error
*/
enum cmd_db_hw_type cmd_db_read_slave_id(const char *id)
{
int ret;
const struct entry_header *ent;
u32 addr;
ret = cmd_db_get_header(id, &ent, NULL);
if (ret < 0)
return CMD_DB_HW_INVALID;
addr = le32_to_cpu(ent->addr);
return (addr >> SLAVE_ID_SHIFT) & SLAVE_ID_MASK;
}
/**
* cmd_db_read_aux_data() - Query command db for aux data.
*
* @id: Resource to retrieve AUX Data on
* @len: size of data buffer returned
*
* Return: pointer to data on success, error pointer otherwise
*/
const void *cmd_db_read_aux_data(const char *id, size_t *len)
{
int ret;
const struct entry_header *ent;
const struct rsc_hdr *rsc_hdr;
ret = cmd_db_get_header(id, &ent, &rsc_hdr);
if (ret)
return ERR_PTR(ret);
if (len)
*len = le16_to_cpu(ent->len);
return rsc_offset(rsc_hdr, ent);
}
static int cmd_db_bind(struct udevice *dev)
{
void __iomem *base;

2
include/soc/qcom/cmd-db.h
View File

@@ -21,6 +21,8 @@ enum cmd_db_hw_type {
#if IS_ENABLED(CONFIG_QCOM_COMMAND_DB)
u32 cmd_db_read_addr(const char *resource_id);
enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id);
const void *cmd_db_read_aux_data(const char *resource_id, size_t *len);
#else
static inline u32 cmd_db_read_addr(const char *resource_id)