acpi/acpica/amlresrc.h

0001 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
0002 /******************************************************************************
0003  *
0004  * Module Name: amlresrc.h - AML resource descriptors
0005  *
0006  * Copyright (C) 2000 - 2022, Intel Corp.
0007  *
0008  *****************************************************************************/
0009
0010 /* acpisrc:struct_defs -- for acpisrc conversion */
0011
0012 #ifndef __AMLRESRC_H
0013 #define __AMLRESRC_H
0014
0015 /*
0016  * Resource descriptor tags, as defined in the ACPI specification.
0017  * Used to symbolically reference fields within a descriptor.
0018  */
0019 #define ACPI_RESTAG_ADDRESS                     "_ADR"
0020 #define ACPI_RESTAG_ALIGNMENT                   "_ALN"
0021 #define ACPI_RESTAG_ADDRESSSPACE                "_ASI"
0022 #define ACPI_RESTAG_ACCESSSIZE                  "_ASZ"
0023 #define ACPI_RESTAG_TYPESPECIFICATTRIBUTES      "_ATT"
0024 #define ACPI_RESTAG_BASEADDRESS                 "_BAS"
0025 #define ACPI_RESTAG_BUSMASTER                   "_BM_"  /* Master(1), Slave(0) */
0026 #define ACPI_RESTAG_DEBOUNCETIME                "_DBT"
0027 #define ACPI_RESTAG_DECODE                      "_DEC"
0028 #define ACPI_RESTAG_DEVICEPOLARITY              "_DPL"
0029 #define ACPI_RESTAG_DMA                         "_DMA"
0030 #define ACPI_RESTAG_DMATYPE                     "_TYP"  /* Compatible(0), A(1), B(2), F(3) */
0031 #define ACPI_RESTAG_DRIVESTRENGTH               "_DRS"
0032 #define ACPI_RESTAG_ENDIANNESS                  "_END"
0033 #define ACPI_RESTAG_FLOWCONTROL                 "_FLC"
0034 #define ACPI_RESTAG_FUNCTION                    "_FUN"
0035 #define ACPI_RESTAG_GRANULARITY                 "_GRA"
0036 #define ACPI_RESTAG_INTERRUPT                   "_INT"
0037 #define ACPI_RESTAG_INTERRUPTLEVEL              "_LL_"  /* active_lo(1), active_hi(0) */
0038 #define ACPI_RESTAG_INTERRUPTSHARE              "_SHR"  /* Shareable(1), no_share(0) */
0039 #define ACPI_RESTAG_INTERRUPTTYPE               "_HE_"  /* Edge(1), Level(0) */
0040 #define ACPI_RESTAG_IORESTRICTION               "_IOR"
0041 #define ACPI_RESTAG_LENGTH                      "_LEN"
0042 #define ACPI_RESTAG_LINE                        "_LIN"
0043 #define ACPI_RESTAG_LOCALPORT                   "_PRT"
0044 #define ACPI_RESTAG_MEMATTRIBUTES               "_MTP"  /* Memory(0), Reserved(1), ACPI(2), NVS(3) */
0045 #define ACPI_RESTAG_MEMTYPE                     "_MEM"  /* non_cache(0), Cacheable(1) Cache+combine(2), Cache+prefetch(3) */
0046 #define ACPI_RESTAG_MAXADDR                     "_MAX"
0047 #define ACPI_RESTAG_MINADDR                     "_MIN"
0048 #define ACPI_RESTAG_MAXTYPE                     "_MAF"
0049 #define ACPI_RESTAG_MINTYPE                     "_MIF"
0050 #define ACPI_RESTAG_MODE                        "_MOD"
0051 #define ACPI_RESTAG_PARITY                      "_PAR"
0052 #define ACPI_RESTAG_PHASE                       "_PHA"
0053 #define ACPI_RESTAG_PHYTYPE                     "_PHY"
0054 #define ACPI_RESTAG_PIN                         "_PIN"
0055 #define ACPI_RESTAG_PINCONFIG                   "_PPI"
0056 #define ACPI_RESTAG_PINCONFIG_TYPE              "_TYP"
0057 #define ACPI_RESTAG_PINCONFIG_VALUE             "_VAL"
0058 #define ACPI_RESTAG_POLARITY                    "_POL"
0059 #define ACPI_RESTAG_REGISTERBITOFFSET           "_RBO"
0060 #define ACPI_RESTAG_REGISTERBITWIDTH            "_RBW"
0061 #define ACPI_RESTAG_RANGETYPE                   "_RNG"
0062 #define ACPI_RESTAG_READWRITETYPE               "_RW_"  /* read_only(0), Writeable (1) */
0063 #define ACPI_RESTAG_LENGTH_RX                   "_RXL"
0064 #define ACPI_RESTAG_LENGTH_TX                   "_TXL"
0065 #define ACPI_RESTAG_SLAVEMODE                   "_SLV"
0066 #define ACPI_RESTAG_SPEED                       "_SPE"
0067 #define ACPI_RESTAG_STOPBITS                    "_STB"
0068 #define ACPI_RESTAG_TRANSLATION                 "_TRA"
0069 #define ACPI_RESTAG_TRANSTYPE                   "_TRS"  /* Sparse(1), Dense(0) */
0070 #define ACPI_RESTAG_TYPE                        "_TTP"  /* Translation(1), Static (0) */
0071 #define ACPI_RESTAG_XFERTYPE                    "_SIZ"  /* 8(0), 8And16(1), 16(2) */
0072 #define ACPI_RESTAG_VENDORDATA                  "_VEN"
0073
0074 /* Default sizes for "small" resource descriptors */
0075
0076 #define ASL_RDESC_IRQ_SIZE                      0x02
0077 #define ASL_RDESC_DMA_SIZE                      0x02
0078 #define ASL_RDESC_ST_DEPEND_SIZE                0x00
0079 #define ASL_RDESC_END_DEPEND_SIZE               0x00
0080 #define ASL_RDESC_IO_SIZE                       0x07
0081 #define ASL_RDESC_FIXED_IO_SIZE                 0x03
0082 #define ASL_RDESC_FIXED_DMA_SIZE                0x05
0083 #define ASL_RDESC_END_TAG_SIZE                  0x01
0084
0085 struct asl_resource_node {
0086     u32 buffer_length;
0087     void *buffer;
0088     struct asl_resource_node *next;
0089 };
0090
0091 struct asl_resource_info {
0092     union acpi_parse_object *descriptor_type_op;    /* Resource descriptor parse node */
0093     union acpi_parse_object *mapping_op;    /* Used for mapfile support */
0094     u32 current_byte_offset;    /* Offset in resource template */
0095 };
0096
0097 /* Macros used to generate AML resource length fields */
0098
0099 #define ACPI_AML_SIZE_LARGE(r)      (sizeof (r) - sizeof (struct aml_resource_large_header))
0100 #define ACPI_AML_SIZE_SMALL(r)      (sizeof (r) - sizeof (struct aml_resource_small_header))
0101
0102 /*
0103  * Resource descriptors defined in the ACPI specification.
0104  *
0105  * Packing/alignment must be BYTE because these descriptors
0106  * are used to overlay the raw AML byte stream.
0107  */
0108 #pragma pack(1)
0109
0110 /*
0111  * SMALL descriptors
0112  */
0113 #define AML_RESOURCE_SMALL_HEADER_COMMON \
0114     u8                              descriptor_type;
0115
0116 struct aml_resource_small_header {
0117 AML_RESOURCE_SMALL_HEADER_COMMON};
0118
0119 struct aml_resource_irq {
0120     AML_RESOURCE_SMALL_HEADER_COMMON u16 irq_mask;
0121     u8 flags;
0122 };
0123
0124 struct aml_resource_irq_noflags {
0125     AML_RESOURCE_SMALL_HEADER_COMMON u16 irq_mask;
0126 };
0127
0128 struct aml_resource_dma {
0129     AML_RESOURCE_SMALL_HEADER_COMMON u8 dma_channel_mask;
0130     u8 flags;
0131 };
0132
0133 struct aml_resource_start_dependent {
0134     AML_RESOURCE_SMALL_HEADER_COMMON u8 flags;
0135 };
0136
0137 struct aml_resource_start_dependent_noprio {
0138 AML_RESOURCE_SMALL_HEADER_COMMON};
0139
0140 struct aml_resource_end_dependent {
0141 AML_RESOURCE_SMALL_HEADER_COMMON};
0142
0143 struct aml_resource_io {
0144     AML_RESOURCE_SMALL_HEADER_COMMON u8 flags;
0145     u16 minimum;
0146     u16 maximum;
0147     u8 alignment;
0148     u8 address_length;
0149 };
0150
0151 struct aml_resource_fixed_io {
0152     AML_RESOURCE_SMALL_HEADER_COMMON u16 address;
0153     u8 address_length;
0154 };
0155
0156 struct aml_resource_vendor_small {
0157 AML_RESOURCE_SMALL_HEADER_COMMON};
0158
0159 struct aml_resource_end_tag {
0160     AML_RESOURCE_SMALL_HEADER_COMMON u8 checksum;
0161 };
0162
0163 struct aml_resource_fixed_dma {
0164     AML_RESOURCE_SMALL_HEADER_COMMON u16 request_lines;
0165     u16 channels;
0166     u8 width;
0167 };
0168
0169 /*
0170  * LARGE descriptors
0171  */
0172 #define AML_RESOURCE_LARGE_HEADER_COMMON \
0173     u8                              descriptor_type;\
0174     u16                             resource_length;
0175
0176 struct aml_resource_large_header {
0177 AML_RESOURCE_LARGE_HEADER_COMMON};
0178
0179 /* General Flags for address space resource descriptors */
0180
0181 #define ACPI_RESOURCE_FLAG_DEC      2
0182 #define ACPI_RESOURCE_FLAG_MIF      4
0183 #define ACPI_RESOURCE_FLAG_MAF      8
0184
0185 struct aml_resource_memory24 {
0186     AML_RESOURCE_LARGE_HEADER_COMMON u8 flags;
0187     u16 minimum;
0188     u16 maximum;
0189     u16 alignment;
0190     u16 address_length;
0191 };
0192
0193 struct aml_resource_vendor_large {
0194 AML_RESOURCE_LARGE_HEADER_COMMON};
0195
0196 struct aml_resource_memory32 {
0197     AML_RESOURCE_LARGE_HEADER_COMMON u8 flags;
0198     u32 minimum;
0199     u32 maximum;
0200     u32 alignment;
0201     u32 address_length;
0202 };
0203
0204 struct aml_resource_fixed_memory32 {
0205     AML_RESOURCE_LARGE_HEADER_COMMON u8 flags;
0206     u32 address;
0207     u32 address_length;
0208 };
0209
0210 #define AML_RESOURCE_ADDRESS_COMMON \
0211     u8                              resource_type; \
0212     u8                              flags; \
0213     u8                              specific_flags;
0214
0215 struct aml_resource_address {
0216 AML_RESOURCE_LARGE_HEADER_COMMON AML_RESOURCE_ADDRESS_COMMON};
0217
0218 struct aml_resource_extended_address64 {
0219     AML_RESOURCE_LARGE_HEADER_COMMON
0220         AML_RESOURCE_ADDRESS_COMMON u8 revision_ID;
0221     u8 reserved;
0222     u64 granularity;
0223     u64 minimum;
0224     u64 maximum;
0225     u64 translation_offset;
0226     u64 address_length;
0227     u64 type_specific;
0228 };
0229
0230 #define AML_RESOURCE_EXTENDED_ADDRESS_REVISION          1   /* ACPI 3.0 */
0231
0232 struct aml_resource_address64 {
0233     AML_RESOURCE_LARGE_HEADER_COMMON
0234         AML_RESOURCE_ADDRESS_COMMON u64 granularity;
0235     u64 minimum;
0236     u64 maximum;
0237     u64 translation_offset;
0238     u64 address_length;
0239 };
0240
0241 struct aml_resource_address32 {
0242     AML_RESOURCE_LARGE_HEADER_COMMON
0243         AML_RESOURCE_ADDRESS_COMMON u32 granularity;
0244     u32 minimum;
0245     u32 maximum;
0246     u32 translation_offset;
0247     u32 address_length;
0248 };
0249
0250 struct aml_resource_address16 {
0251     AML_RESOURCE_LARGE_HEADER_COMMON
0252         AML_RESOURCE_ADDRESS_COMMON u16 granularity;
0253     u16 minimum;
0254     u16 maximum;
0255     u16 translation_offset;
0256     u16 address_length;
0257 };
0258
0259 struct aml_resource_extended_irq {
0260     AML_RESOURCE_LARGE_HEADER_COMMON u8 flags;
0261     u8 interrupt_count;
0262     u32 interrupts[1];
0263     /* res_source_index, res_source optional fields follow */
0264 };
0265
0266 struct aml_resource_generic_register {
0267     AML_RESOURCE_LARGE_HEADER_COMMON u8 address_space_id;
0268     u8 bit_width;
0269     u8 bit_offset;
0270     u8 access_size;     /* ACPI 3.0, was previously Reserved */
0271     u64 address;
0272 };
0273
0274 /* Common descriptor for gpio_int and gpio_io (ACPI 5.0) */
0275
0276 struct aml_resource_gpio {
0277     AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
0278     u8 connection_type;
0279     u16 flags;
0280     u16 int_flags;
0281     u8 pin_config;
0282     u16 drive_strength;
0283     u16 debounce_timeout;
0284     u16 pin_table_offset;
0285     u8 res_source_index;
0286     u16 res_source_offset;
0287     u16 vendor_offset;
0288     u16 vendor_length;
0289     /*
0290      * Optional fields follow immediately:
0291      * 1) PIN list (Words)
0292      * 2) Resource Source String
0293      * 3) Vendor Data bytes
0294      */
0295 };
0296
0297 #define AML_RESOURCE_GPIO_REVISION              1   /* ACPI 5.0 */
0298
0299 /* Values for connection_type above */
0300
0301 #define AML_RESOURCE_GPIO_TYPE_INT              0
0302 #define AML_RESOURCE_GPIO_TYPE_IO               1
0303 #define AML_RESOURCE_MAX_GPIOTYPE               1
0304
0305 /* Common preamble for all serial descriptors (ACPI 5.0) */
0306
0307 #define AML_RESOURCE_SERIAL_COMMON \
0308     u8                              revision_id; \
0309     u8                              res_source_index; \
0310     u8                              type; \
0311     u8                              flags; \
0312     u16                             type_specific_flags; \
0313     u8                              type_revision_id; \
0314     u16                             type_data_length; \
0315
0316 /* Values for the type field above */
0317
0318 #define AML_RESOURCE_I2C_SERIALBUSTYPE          1
0319 #define AML_RESOURCE_SPI_SERIALBUSTYPE          2
0320 #define AML_RESOURCE_UART_SERIALBUSTYPE         3
0321 #define AML_RESOURCE_CSI2_SERIALBUSTYPE         4
0322 #define AML_RESOURCE_MAX_SERIALBUSTYPE          4
0323 #define AML_RESOURCE_VENDOR_SERIALBUSTYPE       192 /* Vendor defined is 0xC0-0xFF (NOT SUPPORTED) */
0324
0325 struct aml_resource_common_serialbus {
0326 AML_RESOURCE_LARGE_HEADER_COMMON AML_RESOURCE_SERIAL_COMMON};
0327
0328 struct aml_resource_csi2_serialbus {
0329     AML_RESOURCE_LARGE_HEADER_COMMON AML_RESOURCE_SERIAL_COMMON
0330         /*
0331          * Optional fields follow immediately:
0332          * 1) Vendor Data bytes
0333          * 2) Resource Source String
0334          */
0335 };
0336
0337 #define AML_RESOURCE_CSI2_REVISION              1   /* ACPI 6.4 */
0338 #define AML_RESOURCE_CSI2_TYPE_REVISION         1   /* ACPI 6.4 */
0339 #define AML_RESOURCE_CSI2_MIN_DATA_LEN          0   /* ACPI 6.4 */
0340
0341 struct aml_resource_i2c_serialbus {
0342     AML_RESOURCE_LARGE_HEADER_COMMON
0343         AML_RESOURCE_SERIAL_COMMON u32 connection_speed;
0344     u16 slave_address;
0345     /*
0346      * Optional fields follow immediately:
0347      * 1) Vendor Data bytes
0348      * 2) Resource Source String
0349      */
0350 };
0351
0352 #define AML_RESOURCE_I2C_REVISION               1   /* ACPI 5.0 */
0353 #define AML_RESOURCE_I2C_TYPE_REVISION          1   /* ACPI 5.0 */
0354 #define AML_RESOURCE_I2C_MIN_DATA_LEN           6
0355
0356 struct aml_resource_spi_serialbus {
0357     AML_RESOURCE_LARGE_HEADER_COMMON
0358         AML_RESOURCE_SERIAL_COMMON u32 connection_speed;
0359     u8 data_bit_length;
0360     u8 clock_phase;
0361     u8 clock_polarity;
0362     u16 device_selection;
0363     /*
0364      * Optional fields follow immediately:
0365      * 1) Vendor Data bytes
0366      * 2) Resource Source String
0367      */
0368 };
0369
0370 #define AML_RESOURCE_SPI_REVISION               1   /* ACPI 5.0 */
0371 #define AML_RESOURCE_SPI_TYPE_REVISION          1   /* ACPI 5.0 */
0372 #define AML_RESOURCE_SPI_MIN_DATA_LEN           9
0373
0374 struct aml_resource_uart_serialbus {
0375     AML_RESOURCE_LARGE_HEADER_COMMON
0376         AML_RESOURCE_SERIAL_COMMON u32 default_baud_rate;
0377     u16 rx_fifo_size;
0378     u16 tx_fifo_size;
0379     u8 parity;
0380     u8 lines_enabled;
0381     /*
0382      * Optional fields follow immediately:
0383      * 1) Vendor Data bytes
0384      * 2) Resource Source String
0385      */
0386 };
0387
0388 #define AML_RESOURCE_UART_REVISION              1   /* ACPI 5.0 */
0389 #define AML_RESOURCE_UART_TYPE_REVISION         1   /* ACPI 5.0 */
0390 #define AML_RESOURCE_UART_MIN_DATA_LEN          10
0391
0392 struct aml_resource_pin_function {
0393     AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
0394     u16 flags;
0395     u8 pin_config;
0396     u16 function_number;
0397     u16 pin_table_offset;
0398     u8 res_source_index;
0399     u16 res_source_offset;
0400     u16 vendor_offset;
0401     u16 vendor_length;
0402     /*
0403      * Optional fields follow immediately:
0404      * 1) PIN list (Words)
0405      * 2) Resource Source String
0406      * 3) Vendor Data bytes
0407      */
0408 };
0409
0410 #define AML_RESOURCE_PIN_FUNCTION_REVISION      1   /* ACPI 6.2 */
0411
0412 struct aml_resource_pin_config {
0413     AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
0414     u16 flags;
0415     u8 pin_config_type;
0416     u32 pin_config_value;
0417     u16 pin_table_offset;
0418     u8 res_source_index;
0419     u16 res_source_offset;
0420     u16 vendor_offset;
0421     u16 vendor_length;
0422     /*
0423      * Optional fields follow immediately:
0424      * 1) PIN list (Words)
0425      * 2) Resource Source String
0426      * 3) Vendor Data bytes
0427      */
0428 };
0429
0430 #define AML_RESOURCE_PIN_CONFIG_REVISION      1 /* ACPI 6.2 */
0431
0432 struct aml_resource_pin_group {
0433     AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
0434     u16 flags;
0435     u16 pin_table_offset;
0436     u16 label_offset;
0437     u16 vendor_offset;
0438     u16 vendor_length;
0439     /*
0440      * Optional fields follow immediately:
0441      * 1) PIN list (Words)
0442      * 2) Resource Label String
0443      * 3) Vendor Data bytes
0444      */
0445 };
0446
0447 #define AML_RESOURCE_PIN_GROUP_REVISION      1  /* ACPI 6.2 */
0448
0449 struct aml_resource_pin_group_function {
0450     AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
0451     u16 flags;
0452     u16 function_number;
0453     u8 res_source_index;
0454     u16 res_source_offset;
0455     u16 res_source_label_offset;
0456     u16 vendor_offset;
0457     u16 vendor_length;
0458     /*
0459      * Optional fields follow immediately:
0460      * 1) Resource Source String
0461      * 2) Resource Source Label String
0462      * 3) Vendor Data bytes
0463      */
0464 };
0465
0466 #define AML_RESOURCE_PIN_GROUP_FUNCTION_REVISION    1   /* ACPI 6.2 */
0467
0468 struct aml_resource_pin_group_config {
0469     AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
0470     u16 flags;
0471     u8 pin_config_type;
0472     u32 pin_config_value;
0473     u8 res_source_index;
0474     u16 res_source_offset;
0475     u16 res_source_label_offset;
0476     u16 vendor_offset;
0477     u16 vendor_length;
0478     /*
0479      * Optional fields follow immediately:
0480      * 1) Resource Source String
0481      * 2) Resource Source Label String
0482      * 3) Vendor Data bytes
0483      */
0484 };
0485
0486 #define AML_RESOURCE_PIN_GROUP_CONFIG_REVISION    1 /* ACPI 6.2 */
0487
0488 /* restore default alignment */
0489
0490 #pragma pack()
0491
0492 /* Union of all resource descriptors, so we can allocate the worst case */
0493
0494 union aml_resource {
0495     /* Descriptor headers */
0496
0497     u8 descriptor_type;
0498     struct aml_resource_small_header small_header;
0499     struct aml_resource_large_header large_header;
0500
0501     /* Small resource descriptors */
0502
0503     struct aml_resource_irq irq;
0504     struct aml_resource_dma dma;
0505     struct aml_resource_start_dependent start_dpf;
0506     struct aml_resource_end_dependent end_dpf;
0507     struct aml_resource_io io;
0508     struct aml_resource_fixed_io fixed_io;
0509     struct aml_resource_fixed_dma fixed_dma;
0510     struct aml_resource_vendor_small vendor_small;
0511     struct aml_resource_end_tag end_tag;
0512
0513     /* Large resource descriptors */
0514
0515     struct aml_resource_memory24 memory24;
0516     struct aml_resource_generic_register generic_reg;
0517     struct aml_resource_vendor_large vendor_large;
0518     struct aml_resource_memory32 memory32;
0519     struct aml_resource_fixed_memory32 fixed_memory32;
0520     struct aml_resource_address16 address16;
0521     struct aml_resource_address32 address32;
0522     struct aml_resource_address64 address64;
0523     struct aml_resource_extended_address64 ext_address64;
0524     struct aml_resource_extended_irq extended_irq;
0525     struct aml_resource_gpio gpio;
0526     struct aml_resource_i2c_serialbus i2c_serial_bus;
0527     struct aml_resource_spi_serialbus spi_serial_bus;
0528     struct aml_resource_uart_serialbus uart_serial_bus;
0529     struct aml_resource_csi2_serialbus csi2_serial_bus;
0530     struct aml_resource_common_serialbus common_serial_bus;
0531     struct aml_resource_pin_function pin_function;
0532     struct aml_resource_pin_config pin_config;
0533     struct aml_resource_pin_group pin_group;
0534     struct aml_resource_pin_group_function pin_group_function;
0535     struct aml_resource_pin_group_config pin_group_config;
0536
0537     /* Utility overlays */
0538
0539     struct aml_resource_address address;
0540     u32 dword_item;
0541     u16 word_item;
0542     u8 byte_item;
0543 };
0544
0545 /* Interfaces used by both the disassembler and compiler */
0546
0547 void
0548 mp_save_gpio_info(union acpi_parse_object *op,
0549           union aml_resource *resource,
0550           u32 pin_count, u16 *pin_list, char *device_name);
0551
0552 void
0553 mp_save_serial_info(union acpi_parse_object *op,
0554             union aml_resource *resource, char *device_name);
0555
0556 char *mp_get_hid_from_parse_tree(struct acpi_namespace_node *hid_node);
0557
0558 char *mp_get_hid_via_namestring(char *device_name);
0559
0560 char *mp_get_connection_info(union acpi_parse_object *op,
0561                  u32 pin_index,
0562                  struct acpi_namespace_node **target_node,
0563                  char **target_name);
0564
0565 char *mp_get_parent_device_hid(union acpi_parse_object *op,
0566                    struct acpi_namespace_node **target_node,
0567                    char **parent_device_name);
0568
0569 char *mp_get_ddn_value(char *device_name);
0570
0571 char *mp_get_hid_value(struct acpi_namespace_node *device_node);
0572
0573 #endif