Loading Documentation/devicetree/bindings/arm/msm/cmd-db.txt 0 → 100644 +33 −0 Original line number Diff line number Diff line Command DB --------- Command DB is a database that provides a mapping between resource key and the resource address for a system resource managed by RPMh. The data is stored in a shared memory region and is loaded by the remote processor. Some of the "Qualcomm Technologies Inc" SOC's have hardware accelerators for controlling shared resources. The HW accelerator associated to a given resource could change between builds when accelerators are added/removed. To remove dependencies between multiple images in a SoC, Command DB allows drivers to query resource parameters based on predetermined key strings. The devicetree representation of the command DB driver should be: PROPERTIES: - compatible: Usage: required Value type: <string> Definition: Should be "qcom,cmd-db" - reg: Usage: required Value type: <prop-encoded-array> Definition: First element is the base address of shared memory Second element is the size of the shared memory region Example: qcom,cmd-db@861e0000 { compatible = "qcom,cmd-db"; reg = <0x861e0000 0x4000>; } drivers/soc/qcom/Kconfig +7 −1 Original line number Diff line number Diff line Loading @@ -450,3 +450,9 @@ config ICNSS_DEBUG primarily consists of logs consisting of information related to hardware register access and enabling BUG_ON for certain cases to aid the debugging. config QCOM_COMMAND_DB bool "Command DB" help Command DB queries shared memory by key string for shared system resources drivers/soc/qcom/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -54,3 +54,4 @@ ifdef CONFIG_MSM_SUBSYSTEM_RESTART obj-y += subsystem_restart.o obj-y += ramdump.o endif obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o drivers/soc/qcom/cmd-db.c 0 → 100644 +284 −0 Original line number Diff line number Diff line /* Copyright (c) 2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/module.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/kernel.h> #include <soc/qcom/cmd-db.h> #define RESOURCE_ID_LEN 8 #define NUM_PRIORITY 2 #define MAX_SLV_ID 8 #define CMD_DB_MAGIC 0x0C0330DBUL #define SLAVE_ID_MASK 0x7 #define SLAVE_ID_SHIFT 16 struct entry_header { uint64_t res_id; u32 priority[NUM_PRIORITY]; u32 addr; u16 len; u16 offset; }; struct rsc_hdr { u16 slv_id; u16 header_offset; /* Entry header offset from data */ u16 data_offset; /* Entry offset for data location */ u16 cnt; /* Number of entries for HW type */ u16 version; /* MSB is Major and LSB is Minor version * identifies the HW type of Aux Data */ u16 reserved[3]; }; struct cmd_db_header { u32 version; u32 magic_num; struct rsc_hdr header[MAX_SLV_ID]; u32 check_sum; u32 reserved; u8 data[]; }; struct cmd_db_entry { const char resource_id[RESOURCE_ID_LEN + 1]; /* Unique id per entry */ const u32 addr; /* TCS Addr Slave ID + Offset address */ const u32 priority[NUM_PRIORITY]; /* Bitmask for DRV IDs */ u32 len; /* Aux data len */ u16 version; u8 data[]; }; /* CMD DB QUERY TYPES */ enum cmd_db_query_type { CMD_DB_QUERY_RES_ID = 0, CMD_DB_QUERY_ADDRESS, CMD_DB_QUERY_INVALID, CMD_DB_QUERY_MAX = 0x7ffffff, }; static void __iomem *start_addr; static struct cmd_db_header *cmd_db_header; static int cmd_db_status = -EPROBE_DEFER; static u64 cmd_db_get_u64_id(const char *id) { uint64_t rsc_id = 0; uint8_t *ch = (uint8_t *)&rsc_id; int i; for (i = 0; ((i < sizeof(rsc_id)) && id[i]); i++) ch[i] = id[i]; return rsc_id; } static int cmd_db_get_header(u64 query, struct entry_header *eh, struct rsc_hdr *rh, bool use_addr) { struct rsc_hdr *rsc_hdr; int i, j; if (!cmd_db_header) return -EPROBE_DEFER; if (!eh || !rh) return -EINVAL; rsc_hdr = &cmd_db_header->header[0]; for (i = 0; i < MAX_SLV_ID ; i++, rsc_hdr++) { struct entry_header *ent; if (!rsc_hdr->slv_id) break; ent = (struct entry_header *)(start_addr + sizeof(*cmd_db_header) + rsc_hdr->header_offset); for (j = 0; j < rsc_hdr->cnt; j++, ent++) { if (use_addr) { if (ent->addr == (u32)(query)) break; } else if (ent->res_id == query) break; } if (j < rsc_hdr->cnt) { memcpy(eh, ent, sizeof(*ent)); memcpy(rh, &cmd_db_header->header[i], sizeof(*rh)); return 0; } } return -ENODEV; } static int cmd_db_get_header_by_addr(u32 addr, struct entry_header *ent_hdr, struct rsc_hdr *rsc_hdr) { return cmd_db_get_header((u64)addr, ent_hdr, rsc_hdr, true); } static int cmd_db_get_header_by_rsc_id(const char *resource_id, struct entry_header *ent_hdr, struct rsc_hdr *rsc_hdr) { u64 rsc_id = cmd_db_get_u64_id(resource_id); return cmd_db_get_header(rsc_id, ent_hdr, rsc_hdr, false); } u32 cmd_db_get_addr(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : ent.addr; } bool cmd_db_get_priority(u32 addr, u8 drv_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_addr(addr, &ent, &rsc_hdr); return ret < 0 ? false : (bool)(ent.priority[0] & (1 << drv_id)); } int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; if (!data) return -EINVAL; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); if (ret) return ret; if (ent.len < len) return -EINVAL; len = (ent.len < len) ? ent.len : len; memcpy_fromio(data, start_addr + sizeof(*cmd_db_header) + rsc_hdr.data_offset + ent.offset, len); return len; } int cmd_db_get_aux_data_len(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : ent.len; } u16 cmd_db_get_version(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : rsc_hdr.version; } int cmd_db_ready(void) { return cmd_db_status; } int cmd_db_get_slave_id(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : (ent.addr >> SLAVE_ID_SHIFT) & SLAVE_ID_MASK; } static int cmd_db_dev_probe(struct platform_device *pdev) { struct resource *res; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { cmd_db_status = -ENOMEM; goto failed; } start_addr = devm_ioremap_resource(&pdev->dev, res); cmd_db_header = devm_kzalloc(&pdev->dev, sizeof(*cmd_db_header), GFP_KERNEL); if (!cmd_db_header) { cmd_db_status = -ENOMEM; goto failed; } memcpy(cmd_db_header, start_addr, sizeof(*cmd_db_header)); if (cmd_db_header->magic_num != CMD_DB_MAGIC) { pr_err("%s(): Invalid Magic\n", __func__); cmd_db_status = -EINVAL; goto failed; } cmd_db_status = 0; of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); failed: return cmd_db_status; } static const struct of_device_id cmd_db_match_table[] = { {.compatible = "qcom,cmd-db"}, {}, }; static struct platform_driver cmd_db_dev_driver = { .probe = cmd_db_dev_probe, .driver = { .name = "cmd-db", .owner = THIS_MODULE, .of_match_table = cmd_db_match_table, }, }; int __init cmd_db_device_init(void) { return platform_driver_register(&cmd_db_dev_driver); } arch_initcall(cmd_db_device_init); include/soc/qcom/cmd-db.h 0 → 100644 +136 −0 Original line number Diff line number Diff line /* Copyright (c) 2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef COMMAND_DB_H #define COMMAND_DB_H enum cmd_db_hw_type { CMD_DB_HW_MIN = 3, CMD_DB_HW_ARC = CMD_DB_HW_MIN, CMD_DB_HW_VRM = 4, CMD_DB_HW_BCM = 5, CMD_DB_HW_MAX = CMD_DB_HW_BCM, CMD_DB_HW_ALL = 0xff, }; #ifdef CONFIG_QCOM_COMMAND_DB /** * cmd_db_get_addr() - Query command db for resource id address. * * This is used to retrieve resource address based on resource * id. * * @resource_id : resource id to query for address * * @return address on success or 0 on error otherwise */ u32 cmd_db_get_addr(const char *resource_id); /** * cmd_db_get_priority() - Query command db for resource address priority * from command DB. * * This is used to retrieve a command DB entry based resource address. * * @addr : resource addr to query for priority. * @drv_id : DRV ID to query resource for priority on. * @type: HW type of ID being queried for faster lookups. Clients could * pass in CMD_DB_HW_ALL if type field is unknown * * @return true if priority bit is set for the DRV ID/address */ bool cmd_db_get_priority(u32 addr, u8 drv_id); /** * cmd_db_get_aux_data() - Query command db for aux data. This is used to * retrieve a command DB entry based resource address. * * @resource_id : Resource to retrieve AUX Data on. * @data : Data buffer to copy returned aux data to. Returns size on NULL * @len : Caller provides size of data buffer passed in. * * returns size of data on success, errno on error */ int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len); /** * cmd_db_get_aux_data_len - Get the length of the auxllary data stored in DB. * * @resource_id: Resource to retrieve AUX Data. * * returns size on success, errno on error */ int cmd_db_get_aux_data_len(const char *resource_id); /** * cmd_db_get_version - Get the version of the command DB data * * @resource_id: Resource id to query the DB for version * * returns version on success, 0 on error. * Major number in MSB, minor number in LSB */ u16 cmd_db_get_version(const char *resource_id); /** * cmd_db_ready - Indicates if command DB is probed * * returns 0 on success , errno otherwise */ int cmd_db_ready(void); /** * cmd_db_get_slave_id - Get the slave ID for a given resource address * * @resource_id: Resource id to query the DB for version * * return cmd_db_hw_type enum on success, errno on error */ int cmd_db_get_slave_id(const char *resource_id); #else static inline u32 cmd_db_get_addr(const char *resource_id) { return 0; } bool cmd_db_get_priority(u32 addr, u8 drv_id) { return false; } int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len) { return -ENODEV; } int cmd_db_get_aux_data_len(const char *resource_id) { return -ENODEV; } u16 cmd_db_get_version(const char *resource_id) { return 0; } int cmd_db_ready(void) { return -ENODEV; } int cmd_db_get_slave_id(const char *resource_id) { return -ENODEV; } #endif #endif Loading
Documentation/devicetree/bindings/arm/msm/cmd-db.txt 0 → 100644 +33 −0 Original line number Diff line number Diff line Command DB --------- Command DB is a database that provides a mapping between resource key and the resource address for a system resource managed by RPMh. The data is stored in a shared memory region and is loaded by the remote processor. Some of the "Qualcomm Technologies Inc" SOC's have hardware accelerators for controlling shared resources. The HW accelerator associated to a given resource could change between builds when accelerators are added/removed. To remove dependencies between multiple images in a SoC, Command DB allows drivers to query resource parameters based on predetermined key strings. The devicetree representation of the command DB driver should be: PROPERTIES: - compatible: Usage: required Value type: <string> Definition: Should be "qcom,cmd-db" - reg: Usage: required Value type: <prop-encoded-array> Definition: First element is the base address of shared memory Second element is the size of the shared memory region Example: qcom,cmd-db@861e0000 { compatible = "qcom,cmd-db"; reg = <0x861e0000 0x4000>; }
drivers/soc/qcom/Kconfig +7 −1 Original line number Diff line number Diff line Loading @@ -450,3 +450,9 @@ config ICNSS_DEBUG primarily consists of logs consisting of information related to hardware register access and enabling BUG_ON for certain cases to aid the debugging. config QCOM_COMMAND_DB bool "Command DB" help Command DB queries shared memory by key string for shared system resources
drivers/soc/qcom/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -54,3 +54,4 @@ ifdef CONFIG_MSM_SUBSYSTEM_RESTART obj-y += subsystem_restart.o obj-y += ramdump.o endif obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o
drivers/soc/qcom/cmd-db.c 0 → 100644 +284 −0 Original line number Diff line number Diff line /* Copyright (c) 2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/module.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/kernel.h> #include <soc/qcom/cmd-db.h> #define RESOURCE_ID_LEN 8 #define NUM_PRIORITY 2 #define MAX_SLV_ID 8 #define CMD_DB_MAGIC 0x0C0330DBUL #define SLAVE_ID_MASK 0x7 #define SLAVE_ID_SHIFT 16 struct entry_header { uint64_t res_id; u32 priority[NUM_PRIORITY]; u32 addr; u16 len; u16 offset; }; struct rsc_hdr { u16 slv_id; u16 header_offset; /* Entry header offset from data */ u16 data_offset; /* Entry offset for data location */ u16 cnt; /* Number of entries for HW type */ u16 version; /* MSB is Major and LSB is Minor version * identifies the HW type of Aux Data */ u16 reserved[3]; }; struct cmd_db_header { u32 version; u32 magic_num; struct rsc_hdr header[MAX_SLV_ID]; u32 check_sum; u32 reserved; u8 data[]; }; struct cmd_db_entry { const char resource_id[RESOURCE_ID_LEN + 1]; /* Unique id per entry */ const u32 addr; /* TCS Addr Slave ID + Offset address */ const u32 priority[NUM_PRIORITY]; /* Bitmask for DRV IDs */ u32 len; /* Aux data len */ u16 version; u8 data[]; }; /* CMD DB QUERY TYPES */ enum cmd_db_query_type { CMD_DB_QUERY_RES_ID = 0, CMD_DB_QUERY_ADDRESS, CMD_DB_QUERY_INVALID, CMD_DB_QUERY_MAX = 0x7ffffff, }; static void __iomem *start_addr; static struct cmd_db_header *cmd_db_header; static int cmd_db_status = -EPROBE_DEFER; static u64 cmd_db_get_u64_id(const char *id) { uint64_t rsc_id = 0; uint8_t *ch = (uint8_t *)&rsc_id; int i; for (i = 0; ((i < sizeof(rsc_id)) && id[i]); i++) ch[i] = id[i]; return rsc_id; } static int cmd_db_get_header(u64 query, struct entry_header *eh, struct rsc_hdr *rh, bool use_addr) { struct rsc_hdr *rsc_hdr; int i, j; if (!cmd_db_header) return -EPROBE_DEFER; if (!eh || !rh) return -EINVAL; rsc_hdr = &cmd_db_header->header[0]; for (i = 0; i < MAX_SLV_ID ; i++, rsc_hdr++) { struct entry_header *ent; if (!rsc_hdr->slv_id) break; ent = (struct entry_header *)(start_addr + sizeof(*cmd_db_header) + rsc_hdr->header_offset); for (j = 0; j < rsc_hdr->cnt; j++, ent++) { if (use_addr) { if (ent->addr == (u32)(query)) break; } else if (ent->res_id == query) break; } if (j < rsc_hdr->cnt) { memcpy(eh, ent, sizeof(*ent)); memcpy(rh, &cmd_db_header->header[i], sizeof(*rh)); return 0; } } return -ENODEV; } static int cmd_db_get_header_by_addr(u32 addr, struct entry_header *ent_hdr, struct rsc_hdr *rsc_hdr) { return cmd_db_get_header((u64)addr, ent_hdr, rsc_hdr, true); } static int cmd_db_get_header_by_rsc_id(const char *resource_id, struct entry_header *ent_hdr, struct rsc_hdr *rsc_hdr) { u64 rsc_id = cmd_db_get_u64_id(resource_id); return cmd_db_get_header(rsc_id, ent_hdr, rsc_hdr, false); } u32 cmd_db_get_addr(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : ent.addr; } bool cmd_db_get_priority(u32 addr, u8 drv_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_addr(addr, &ent, &rsc_hdr); return ret < 0 ? false : (bool)(ent.priority[0] & (1 << drv_id)); } int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; if (!data) return -EINVAL; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); if (ret) return ret; if (ent.len < len) return -EINVAL; len = (ent.len < len) ? ent.len : len; memcpy_fromio(data, start_addr + sizeof(*cmd_db_header) + rsc_hdr.data_offset + ent.offset, len); return len; } int cmd_db_get_aux_data_len(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : ent.len; } u16 cmd_db_get_version(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : rsc_hdr.version; } int cmd_db_ready(void) { return cmd_db_status; } int cmd_db_get_slave_id(const char *resource_id) { int ret; struct entry_header ent; struct rsc_hdr rsc_hdr; ret = cmd_db_get_header_by_rsc_id(resource_id, &ent, &rsc_hdr); return ret < 0 ? 0 : (ent.addr >> SLAVE_ID_SHIFT) & SLAVE_ID_MASK; } static int cmd_db_dev_probe(struct platform_device *pdev) { struct resource *res; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { cmd_db_status = -ENOMEM; goto failed; } start_addr = devm_ioremap_resource(&pdev->dev, res); cmd_db_header = devm_kzalloc(&pdev->dev, sizeof(*cmd_db_header), GFP_KERNEL); if (!cmd_db_header) { cmd_db_status = -ENOMEM; goto failed; } memcpy(cmd_db_header, start_addr, sizeof(*cmd_db_header)); if (cmd_db_header->magic_num != CMD_DB_MAGIC) { pr_err("%s(): Invalid Magic\n", __func__); cmd_db_status = -EINVAL; goto failed; } cmd_db_status = 0; of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); failed: return cmd_db_status; } static const struct of_device_id cmd_db_match_table[] = { {.compatible = "qcom,cmd-db"}, {}, }; static struct platform_driver cmd_db_dev_driver = { .probe = cmd_db_dev_probe, .driver = { .name = "cmd-db", .owner = THIS_MODULE, .of_match_table = cmd_db_match_table, }, }; int __init cmd_db_device_init(void) { return platform_driver_register(&cmd_db_dev_driver); } arch_initcall(cmd_db_device_init);
include/soc/qcom/cmd-db.h 0 → 100644 +136 −0 Original line number Diff line number Diff line /* Copyright (c) 2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef COMMAND_DB_H #define COMMAND_DB_H enum cmd_db_hw_type { CMD_DB_HW_MIN = 3, CMD_DB_HW_ARC = CMD_DB_HW_MIN, CMD_DB_HW_VRM = 4, CMD_DB_HW_BCM = 5, CMD_DB_HW_MAX = CMD_DB_HW_BCM, CMD_DB_HW_ALL = 0xff, }; #ifdef CONFIG_QCOM_COMMAND_DB /** * cmd_db_get_addr() - Query command db for resource id address. * * This is used to retrieve resource address based on resource * id. * * @resource_id : resource id to query for address * * @return address on success or 0 on error otherwise */ u32 cmd_db_get_addr(const char *resource_id); /** * cmd_db_get_priority() - Query command db for resource address priority * from command DB. * * This is used to retrieve a command DB entry based resource address. * * @addr : resource addr to query for priority. * @drv_id : DRV ID to query resource for priority on. * @type: HW type of ID being queried for faster lookups. Clients could * pass in CMD_DB_HW_ALL if type field is unknown * * @return true if priority bit is set for the DRV ID/address */ bool cmd_db_get_priority(u32 addr, u8 drv_id); /** * cmd_db_get_aux_data() - Query command db for aux data. This is used to * retrieve a command DB entry based resource address. * * @resource_id : Resource to retrieve AUX Data on. * @data : Data buffer to copy returned aux data to. Returns size on NULL * @len : Caller provides size of data buffer passed in. * * returns size of data on success, errno on error */ int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len); /** * cmd_db_get_aux_data_len - Get the length of the auxllary data stored in DB. * * @resource_id: Resource to retrieve AUX Data. * * returns size on success, errno on error */ int cmd_db_get_aux_data_len(const char *resource_id); /** * cmd_db_get_version - Get the version of the command DB data * * @resource_id: Resource id to query the DB for version * * returns version on success, 0 on error. * Major number in MSB, minor number in LSB */ u16 cmd_db_get_version(const char *resource_id); /** * cmd_db_ready - Indicates if command DB is probed * * returns 0 on success , errno otherwise */ int cmd_db_ready(void); /** * cmd_db_get_slave_id - Get the slave ID for a given resource address * * @resource_id: Resource id to query the DB for version * * return cmd_db_hw_type enum on success, errno on error */ int cmd_db_get_slave_id(const char *resource_id); #else static inline u32 cmd_db_get_addr(const char *resource_id) { return 0; } bool cmd_db_get_priority(u32 addr, u8 drv_id) { return false; } int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len) { return -ENODEV; } int cmd_db_get_aux_data_len(const char *resource_id) { return -ENODEV; } u16 cmd_db_get_version(const char *resource_id) { return 0; } int cmd_db_ready(void) { return -ENODEV; } int cmd_db_get_slave_id(const char *resource_id) { return -ENODEV; } #endif #endif
