Commit 2b726930 authored by Mika Westerberg's avatar Mika Westerberg Committed by Rafael J. Wysocki

ACPICA: ACPI 6.2: Add support for PinFunction() resource

ACPICA commit 6bbc6357f7061f1243601adde0ea45f7a89274e0

ACPI 6.2 introduced a new resource that is used to describe how certain
pins are muxed for a device. The ASL syntax of this new resource looks
like below:

  PinFunction(Shared, PinConfig, FunctionNumber, ResourceSource,
              ResourceSourceIndex, ResourceUsage, DescriptorName,
              VendorData) {Pin List}

Which is pretty similar to GpioIo()/GpioInt() resources.

Teach ACPICA about this new resource.

Link: https://github.com/acpica/acpica/commit/6bbc6357Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarLv Zheng <lv.zheng@intel.com>
Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent c7a1dfb9
......@@ -1142,6 +1142,7 @@ struct acpi_port_info {
#define ACPI_RESOURCE_NAME_ADDRESS64 0x8A
#define ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64 0x8B
#define ACPI_RESOURCE_NAME_GPIO 0x8C
#define ACPI_RESOURCE_NAME_PIN_FUNCTION 0x8D
#define ACPI_RESOURCE_NAME_SERIAL_BUS 0x8E
#define ACPI_RESOURCE_NAME_LARGE_MAX 0x8E
......
......@@ -329,6 +329,7 @@ extern struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[];
extern struct acpi_rsconvert_info acpi_rs_convert_i2c_serial_bus[];
extern struct acpi_rsconvert_info acpi_rs_convert_spi_serial_bus[];
extern struct acpi_rsconvert_info acpi_rs_convert_uart_serial_bus[];
extern struct acpi_rsconvert_info acpi_rs_convert_pin_function[];
/* These resources require separate get/set tables */
......@@ -372,6 +373,7 @@ extern struct acpi_rsdump_info acpi_rs_dump_ext_address64[];
extern struct acpi_rsdump_info acpi_rs_dump_ext_irq[];
extern struct acpi_rsdump_info acpi_rs_dump_generic_reg[];
extern struct acpi_rsdump_info acpi_rs_dump_gpio[];
extern struct acpi_rsdump_info acpi_rs_dump_pin_function[];
extern struct acpi_rsdump_info acpi_rs_dump_fixed_dma[];
extern struct acpi_rsdump_info acpi_rs_dump_common_serial_bus[];
extern struct acpi_rsdump_info acpi_rs_dump_i2c_serial_bus[];
......
......@@ -65,6 +65,7 @@
#define ACPI_RESTAG_DRIVESTRENGTH "_DRS"
#define ACPI_RESTAG_ENDIANNESS "_END"
#define ACPI_RESTAG_FLOWCONTROL "_FLC"
#define ACPI_RESTAG_FUNCTION "_FUN"
#define ACPI_RESTAG_GRANULARITY "_GRA"
#define ACPI_RESTAG_INTERRUPT "_INT"
#define ACPI_RESTAG_INTERRUPTLEVEL "_LL_" /* active_lo(1), active_hi(0) */
......@@ -404,6 +405,26 @@ struct aml_resource_uart_serialbus {
#define AML_RESOURCE_UART_TYPE_REVISION 1 /* ACPI 5.0 */
#define AML_RESOURCE_UART_MIN_DATA_LEN 10
struct aml_resource_pin_function {
AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
u16 flags;
u8 pin_config;
u16 function_number;
u16 pin_table_offset;
u8 res_source_index;
u16 res_source_offset;
u16 vendor_offset;
u16 vendor_length;
/*
* Optional fields follow immediately:
* 1) PIN list (Words)
* 2) Resource Source String
* 3) Vendor Data bytes
*/
};
#define AML_RESOURCE_PIN_FUNCTION_REVISION 1 /* ACPI 6.2 */
/* restore default alignment */
#pragma pack()
......@@ -446,6 +467,7 @@ union aml_resource {
struct aml_resource_spi_serialbus spi_serial_bus;
struct aml_resource_uart_serialbus uart_serial_bus;
struct aml_resource_common_serialbus common_serial_bus;
struct aml_resource_pin_function pin_function;
/* Utility overlays */
......
......@@ -340,6 +340,22 @@ acpi_rs_get_aml_length(struct acpi_resource *resource,
break;
case ACPI_RESOURCE_TYPE_PIN_FUNCTION:
total_size = (acpi_rs_length)(total_size +
(resource->data.
pin_function.
pin_table_length * 2) +
resource->data.
pin_function.
resource_source.
string_length +
resource->data.
pin_function.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_SERIAL_BUS:
total_size =
......@@ -537,6 +553,24 @@ acpi_rs_get_list_length(u8 *aml_buffer,
}
break;
case ACPI_RESOURCE_NAME_PIN_FUNCTION:
/* Vendor data is optional */
if (aml_resource->pin_function.vendor_length) {
extra_struct_bytes +=
aml_resource->pin_function.vendor_offset -
aml_resource->pin_function.
pin_table_offset +
aml_resource->pin_function.vendor_length;
} else {
extra_struct_bytes +=
aml_resource->large_header.resource_length +
sizeof(struct aml_resource_large_header) -
aml_resource->pin_function.pin_table_offset;
}
break;
case ACPI_RESOURCE_NAME_SERIAL_BUS:
minimum_aml_resource_length =
......
......@@ -314,6 +314,29 @@ struct acpi_rsdump_info acpi_rs_dump_gpio[16] = {
NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_function[10] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_function),
"PinFunction", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_function.revision_id),
"RevisionId", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_function.pin_config), "PinConfig",
acpi_gbl_ppc_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_function.sharable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_function.function_number),
"FunctionNumber", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(pin_function.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_function.pin_table_length),
"PinTableLength", NULL},
{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(pin_function.pin_table), "PinTable",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_function.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_function.vendor_data),
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_fixed_dma[4] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_fixed_dma),
"FixedDma", NULL},
......
......@@ -80,6 +80,7 @@ struct acpi_rsconvert_info *acpi_gbl_set_resource_dispatch[] = {
acpi_rs_convert_gpio, /* 0x11, ACPI_RESOURCE_TYPE_GPIO */
acpi_rs_convert_fixed_dma, /* 0x12, ACPI_RESOURCE_TYPE_FIXED_DMA */
NULL, /* 0x13, ACPI_RESOURCE_TYPE_SERIAL_BUS - Use subtype table below */
acpi_rs_convert_pin_function, /* 0x14, ACPI_RESOURCE_TYPE_PIN_FUNCTION */
};
/* Dispatch tables for AML-to-resource (Get Resource) conversion functions */
......@@ -119,7 +120,7 @@ struct acpi_rsconvert_info *acpi_gbl_get_resource_dispatch[] = {
acpi_rs_convert_address64, /* 0x0A, ACPI_RESOURCE_NAME_ADDRESS64 */
acpi_rs_convert_ext_address64, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64 */
acpi_rs_convert_gpio, /* 0x0C, ACPI_RESOURCE_NAME_GPIO */
NULL, /* 0x0D, Reserved */
acpi_rs_convert_pin_function, /* 0x0D, ACPI_RESOURCE_NAME_PIN_FUNCTION */
NULL, /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use subtype table below */
};
......@@ -157,6 +158,7 @@ struct acpi_rsdump_info *acpi_gbl_dump_resource_dispatch[] = {
acpi_rs_dump_gpio, /* ACPI_RESOURCE_TYPE_GPIO */
acpi_rs_dump_fixed_dma, /* ACPI_RESOURCE_TYPE_FIXED_DMA */
NULL, /* ACPI_RESOURCE_TYPE_SERIAL_BUS */
acpi_rs_dump_pin_function, /* ACPI_RESOURCE_TYPE_PIN_FUNCTION */
};
struct acpi_rsdump_info *acpi_gbl_dump_serial_bus_dispatch[] = {
......@@ -193,6 +195,7 @@ const u8 acpi_gbl_aml_resource_sizes[] = {
sizeof(struct aml_resource_gpio), /* ACPI_RESOURCE_TYPE_GPIO */
sizeof(struct aml_resource_fixed_dma), /* ACPI_RESOURCE_TYPE_FIXED_DMA */
sizeof(struct aml_resource_common_serialbus), /* ACPI_RESOURCE_TYPE_SERIAL_BUS */
sizeof(struct aml_resource_pin_function), /* ACPI_RESOURCE_TYPE_PIN_FUNCTION */
};
const u8 acpi_gbl_resource_struct_sizes[] = {
......@@ -230,6 +233,7 @@ const u8 acpi_gbl_resource_struct_sizes[] = {
ACPI_RS_SIZE(struct acpi_resource_address64),
ACPI_RS_SIZE(struct acpi_resource_extended_address64),
ACPI_RS_SIZE(struct acpi_resource_gpio),
ACPI_RS_SIZE(struct acpi_resource_pin_function),
ACPI_RS_SIZE(struct acpi_resource_common_serialbus)
};
......
......@@ -145,6 +145,82 @@ struct acpi_rsconvert_info acpi_rs_convert_gpio[18] = {
0},
};
/*******************************************************************************
*
* acpi_rs_convert_pinfunction
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_pin_function[13] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_PIN_FUNCTION,
ACPI_RS_SIZE(struct acpi_resource_pin_function),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_pin_function)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_PIN_FUNCTION,
sizeof(struct aml_resource_pin_function),
0},
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.pin_function.revision_id),
AML_OFFSET(pin_function.revision_id),
1},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.pin_function.sharable),
AML_OFFSET(pin_function.flags),
0},
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.pin_function.pin_config),
AML_OFFSET(pin_function.pin_config),
1},
{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.pin_function.function_number),
AML_OFFSET(pin_function.function_number),
2},
/* Pin Table */
/*
* It is OK to use GPIO operations here because none of them refer GPIO
* structures directly but instead use offsets given here.
*/
{ACPI_RSC_COUNT_GPIO_PIN,
ACPI_RS_OFFSET(data.pin_function.pin_table_length),
AML_OFFSET(pin_function.pin_table_offset),
AML_OFFSET(pin_function.res_source_offset)},
{ACPI_RSC_MOVE_GPIO_PIN, ACPI_RS_OFFSET(data.pin_function.pin_table),
AML_OFFSET(pin_function.pin_table_offset),
0},
/* Resource Source */
{ACPI_RSC_MOVE8,
ACPI_RS_OFFSET(data.pin_function.resource_source.index),
AML_OFFSET(pin_function.res_source_index),
1},
{ACPI_RSC_COUNT_GPIO_RES,
ACPI_RS_OFFSET(data.pin_function.resource_source.string_length),
AML_OFFSET(pin_function.res_source_offset),
AML_OFFSET(pin_function.vendor_offset)},
{ACPI_RSC_MOVE_GPIO_RES,
ACPI_RS_OFFSET(data.pin_function.resource_source.string_ptr),
AML_OFFSET(pin_function.res_source_offset),
0},
/* Vendor Data */
{ACPI_RSC_COUNT_GPIO_VEN,
ACPI_RS_OFFSET(data.pin_function.vendor_length),
AML_OFFSET(pin_function.vendor_length),
1},
{ACPI_RSC_MOVE_GPIO_RES, ACPI_RS_OFFSET(data.pin_function.vendor_data),
AML_OFFSET(pin_function.vendor_offset),
0},
};
/*******************************************************************************
*
* acpi_rs_convert_i2c_serial_bus
......
......@@ -332,7 +332,7 @@ const u8 acpi_gbl_resource_aml_sizes[] = {
ACPI_AML_SIZE_LARGE(struct aml_resource_address64),
ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64),
ACPI_AML_SIZE_LARGE(struct aml_resource_gpio),
0,
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_function),
ACPI_AML_SIZE_LARGE(struct aml_resource_common_serialbus),
};
......@@ -384,7 +384,7 @@ static const u8 acpi_gbl_resource_types[] = {
ACPI_VARIABLE_LENGTH, /* 0A Qword* address */
ACPI_FIXED_LENGTH, /* 0B Extended* address */
ACPI_VARIABLE_LENGTH, /* 0C Gpio* */
0,
ACPI_VARIABLE_LENGTH, /* 0D pin_function */
ACPI_VARIABLE_LENGTH /* 0E *serial_bus */
};
......
......@@ -534,6 +534,18 @@ struct acpi_resource_uart_serialbus {
#define ACPI_UART_CLEAR_TO_SEND (1<<6)
#define ACPI_UART_REQUEST_TO_SEND (1<<7)
struct acpi_resource_pin_function {
u8 revision_id;
u8 pin_config;
u8 sharable; /* For values, see Interrupt Attributes above */
u16 function_number;
u16 pin_table_length;
u16 vendor_length;
struct acpi_resource_source resource_source;
u16 *pin_table;
u8 *vendor_data;
};
/* ACPI_RESOURCE_TYPEs */
#define ACPI_RESOURCE_TYPE_IRQ 0
......@@ -556,7 +568,8 @@ struct acpi_resource_uart_serialbus {
#define ACPI_RESOURCE_TYPE_GPIO 17 /* ACPI 5.0 */
#define ACPI_RESOURCE_TYPE_FIXED_DMA 18 /* ACPI 5.0 */
#define ACPI_RESOURCE_TYPE_SERIAL_BUS 19 /* ACPI 5.0 */
#define ACPI_RESOURCE_TYPE_MAX 19
#define ACPI_RESOURCE_TYPE_PIN_FUNCTION 20 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_MAX 20
/* Master union for resource descriptors */
......@@ -584,6 +597,7 @@ union acpi_resource_data {
struct acpi_resource_spi_serialbus spi_serial_bus;
struct acpi_resource_uart_serialbus uart_serial_bus;
struct acpi_resource_common_serialbus common_serial_bus;
struct acpi_resource_pin_function pin_function;
/* Common fields */
......
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