From: Corey Minyard <cminy...@mvista.com> Signed-off-by: Corey Minyard <cminy...@mvista.com> --- hw/acpi/aml-build.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/hw/acpi/aml-build.h | 11 +++++++++++ 2 files changed, 53 insertions(+)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index ab89ca6..7a3874b 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -1563,3 +1563,45 @@ build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets, build_header(linker, table_data, (void *)rsdt, "RSDT", rsdt_len, 1, oem_id, oem_table_id); } + +static Aml *aml_serial_bus_device(AmlSerialBusType type, uint8_t flags, + uint16_t type_flags, + uint8_t revid, uint16_t data_length, + uint16_t resource_source_length) +{ + Aml *var = aml_alloc(); + uint16_t length = data_length + resource_source_length + 9; + + build_append_byte(var->buf, 0x8e); /* Serial Bus Connection Descriptor */ + build_append_byte(var->buf, length & 0xff); + build_append_byte(var->buf, length >> 8); + build_append_byte(var->buf, 1); /* Revision */ + build_append_byte(var->buf, 0); /* Resource source index */ + build_append_byte(var->buf, type); /* Serial bus type */ + build_append_byte(var->buf, flags); /* Serial bus type */ + build_append_byte(var->buf, type_flags & 0xff); + build_append_byte(var->buf, type_flags >> 8); + build_append_byte(var->buf, revid); + build_append_byte(var->buf, data_length & 0xff); + build_append_byte(var->buf, data_length >> 8); + + return var; +} + +Aml *aml_i2c_serial_bus_device(uint8_t flags, uint32_t con_speed, + uint16_t address, const char *resource_source) +{ + unsigned int resource_source_len = strlen(resource_source) + 1; + Aml *var = aml_serial_bus_device(aml_serial_bus_type_i2c, flags, 0, 1, + 6, resource_source_len); + + build_append_byte(var->buf, con_speed & 0xff); + build_append_byte(var->buf, (con_speed >> 8) & 0xff); + build_append_byte(var->buf, (con_speed >> 16) & 0xff); + build_append_byte(var->buf, (con_speed >> 24) & 0xff); + build_append_byte(var->buf, address & 0xff); + build_append_byte(var->buf, address >> 8); + g_array_append_vals(var->buf, resource_source, resource_source_len); + + return var; +} diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index 2c994b3..1eb3ebd 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -206,6 +206,15 @@ struct AcpiBuildTables { GArray *linker; } AcpiBuildTables; +typedef enum { + aml_serial_bus_type_i2c = 1, + aml_serial_bus_type_spi = 2, + aml_serial_bus_type_uart = 3 +} AmlSerialBusType; + +#define AML_SERIAL_BUS_FLAG_MASTER_DEVICE (1 << 0) +#define AML_SERIAL_BUS_FLAG_CONSUME_ONLY (1 << 1) + /** * init_aml_allocator: * @@ -327,6 +336,8 @@ Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed, Aml *aml_dma(AmlDmaType typ, AmlDmaBusMaster bm, AmlTransferSize sz, uint8_t channel); Aml *aml_sleep(uint64_t msec); +Aml *aml_i2c_serial_bus_device(uint8_t flags, uint32_t con_speed, + uint16_t address, const char *resource_source); /* Block AML object primitives */ Aml *aml_scope(const char *name_format, ...) GCC_FMT_ATTR(1, 2); -- 2.7.4