diff options
Diffstat (limited to 'src/arch/x86/include')
| -rw-r--r-- | src/arch/x86/include/arch/acpi_device.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/arch/x86/include/arch/acpi_device.h b/src/arch/x86/include/arch/acpi_device.h index a81cee0087..7b5001f65a 100644 --- a/src/arch/x86/include/arch/acpi_device.h +++ b/src/arch/x86/include/arch/acpi_device.h @@ -16,11 +16,13 @@ #ifndef __ACPI_DEVICE_H #define __ACPI_DEVICE_H +#include <device/i2c.h> #include <stdint.h> #define ACPI_DESCRIPTOR_LARGE (1 << 7) #define ACPI_DESCRIPTOR_INTERRUPT (ACPI_DESCRIPTOR_LARGE | 9) #define ACPI_DESCRIPTOR_GPIO (ACPI_DESCRIPTOR_LARGE | 12) +#define ACPI_DESCRIPTOR_SERIAL_BUS (ACPI_DESCRIPTOR_LARGE | 14) struct device; const char *acpi_device_name(struct device *dev); @@ -157,4 +159,29 @@ struct acpi_gpio { /* Write GpioIo() or GpioInt() descriptor to SSDT AML output */ void acpi_device_write_gpio(const struct acpi_gpio *gpio); +/* + * ACPI Descriptors for Serial Bus interfaces + */ + +#define ACPI_SERIAL_BUS_TYPE_I2C 1 +#define ACPI_SERIAL_BUS_REVISION_ID 1 + +/* + * ACPI I2C Bus + */ + +struct acpi_i2c { + /* I2C Address */ + uint16_t address; + /* 7 or 10 bit Address Mode */ + enum i2c_address_mode mode_10bit; + /* I2C Bus Speed in Hz */ + enum i2c_speed speed; + /* Reference to I2C controller */ + const char *resource; +}; + +/* Write I2cSerialBus() descriptor to SSDT AML output */ +void acpi_device_write_i2c(const struct acpi_i2c *i2c); + #endif |