Commit 97028ce6 authored by Mika Westerberg's avatar Mika Westerberg Committed by Rafael J. Wysocki

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

ACPICA commit a06fdba686cefccd5dd5b93b52fa0f1e3f984906

ACPI 6.2 introduced a new resource that is used to specify fine-grained
configuration of a pin or set of pins used by a device. The ASL syntax of
this new resource looks like:

  PinConfig (Shared/Exclusive, PinConfigType, PinConfigValue,
             ResourceSource, ResourceSourceIndex, ResourceUsage,
             DescriptorName, Vendordata) {Pin List}

PinConfigType is an integer with following accepted values:

  0x00 (Default) - No configuration is applied to the pin
  0x01 (Bias Pull-up) - Pin is pulled up using certain size resistor
  0x02 (Bias Pull-down) - Pin is pulled down using certain size resistor
  0x03 (Bias Default) - Set to default biasing
  0x04 (Bias Disable) - All bias settings will be disabled
  0x05 (Bias High Impedance) - Configure the pin as hi_z
  0x06 (Bias Bus Hold) - Configure the pin in a weak latch state where
                         it drives the last value on a tristate bus
  0x07 (Drive Open Drain) - Configure the pin into open drain state
  0x08 (Drive Open Source) - Configure the pin into open source state
  0x09 (Drive Push Pull) - Configure the pin into push-pull state
  0x0a (Drive Strength) - How much the pin can supply current
  0x0b (Slew Rate) - Configure slew rate of the pin
  0x0c (Input Debounce) - Enable input debouncer for the pin
  0x0d (Input Schmitt Trigger) - Enable schmitt trigger for the pin
  0x0e - 0x7f - Reserved
  0x80 - 0xff - Vendor defined types

The PinConfigValue depends on the type and is expressed as units
suitable for that type (for example bias uses Ohms).

Link: https://github.com/acpica/acpica/commit/a06fdba6Signed-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 2b726930
......@@ -1144,7 +1144,8 @@ struct acpi_port_info {
#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
#define ACPI_RESOURCE_NAME_PIN_CONFIG 0x8F
#define ACPI_RESOURCE_NAME_LARGE_MAX 0x8F
/*****************************************************************************
*
......
......@@ -330,6 +330,7 @@ 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[];
extern struct acpi_rsconvert_info acpi_rs_convert_pin_config[];
/* These resources require separate get/set tables */
......@@ -380,6 +381,7 @@ extern struct acpi_rsdump_info acpi_rs_dump_i2c_serial_bus[];
extern struct acpi_rsdump_info acpi_rs_dump_spi_serial_bus[];
extern struct acpi_rsdump_info acpi_rs_dump_uart_serial_bus[];
extern struct acpi_rsdump_info acpi_rs_dump_general_flags[];
extern struct acpi_rsdump_info acpi_rs_dump_pin_config[];
#endif
#endif /* __ACRESRC_H__ */
......@@ -85,6 +85,7 @@ extern const char *acpi_gbl_bpb_decode[];
extern const char *acpi_gbl_sb_decode[];
extern const char *acpi_gbl_fc_decode[];
extern const char *acpi_gbl_pt_decode[];
extern const char *acpi_gbl_ptyp_decode[];
#endif
/*
......
......@@ -85,6 +85,8 @@
#define ACPI_RESTAG_PHASE "_PHA"
#define ACPI_RESTAG_PIN "_PIN"
#define ACPI_RESTAG_PINCONFIG "_PPI"
#define ACPI_RESTAG_PINCONFIG_TYPE "_TYP"
#define ACPI_RESTAG_PINCONFIG_VALUE "_VAL"
#define ACPI_RESTAG_POLARITY "_POL"
#define ACPI_RESTAG_REGISTERBITOFFSET "_RBO"
#define ACPI_RESTAG_REGISTERBITWIDTH "_RBW"
......@@ -425,6 +427,26 @@ struct aml_resource_pin_function {
#define AML_RESOURCE_PIN_FUNCTION_REVISION 1 /* ACPI 6.2 */
struct aml_resource_pin_config {
AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
u16 flags;
u8 pin_config_type;
u32 pin_config_value;
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_CONFIG_REVISION 1 /* ACPI 6.2 */
/* restore default alignment */
#pragma pack()
......@@ -468,6 +490,7 @@ union aml_resource {
struct aml_resource_uart_serialbus uart_serial_bus;
struct aml_resource_common_serialbus common_serial_bus;
struct aml_resource_pin_function pin_function;
struct aml_resource_pin_config pin_config;
/* Utility overlays */
......
......@@ -375,6 +375,20 @@ acpi_rs_get_aml_length(struct acpi_resource *resource,
break;
case ACPI_RESOURCE_TYPE_PIN_CONFIG:
total_size = (acpi_rs_length)(total_size +
(resource->data.
pin_config.
pin_table_length * 2) +
resource->data.pin_config.
resource_source.
string_length +
resource->data.pin_config.
vendor_length);
break;
default:
break;
......@@ -581,6 +595,23 @@ acpi_rs_get_list_length(u8 *aml_buffer,
minimum_aml_resource_length;
break;
case ACPI_RESOURCE_NAME_PIN_CONFIG:
/* Vendor data is optional */
if (aml_resource->pin_config.vendor_length) {
extra_struct_bytes +=
aml_resource->pin_config.vendor_offset -
aml_resource->pin_config.pin_table_offset +
aml_resource->pin_config.vendor_length;
} else {
extra_struct_bytes +=
aml_resource->large_header.resource_length +
sizeof(struct aml_resource_large_header) -
aml_resource->pin_config.pin_table_offset;
}
break;
default:
break;
......
......@@ -337,6 +337,31 @@ struct acpi_rsdump_info acpi_rs_dump_pin_function[10] = {
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_config[11] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_config),
"PinConfig", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_config.revision_id), "RevisionId",
NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_config.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_config.sharable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_config.pin_config_type),
"PinConfigType", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(pin_config.pin_config_value),
"PinConfigValue", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(pin_config.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_config.pin_table_length),
"PinTableLength", NULL},
{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(pin_config.pin_table), "PinTable",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_config.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_config.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},
......
......@@ -81,6 +81,7 @@ struct acpi_rsconvert_info *acpi_gbl_set_resource_dispatch[] = {
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 */
acpi_rs_convert_pin_config, /* 0x15, ACPI_RESOURCE_TYPE_PIN_CONFIG */
};
/* Dispatch tables for AML-to-resource (Get Resource) conversion functions */
......@@ -122,6 +123,7 @@ struct acpi_rsconvert_info *acpi_gbl_get_resource_dispatch[] = {
acpi_rs_convert_gpio, /* 0x0C, ACPI_RESOURCE_NAME_GPIO */
acpi_rs_convert_pin_function, /* 0x0D, ACPI_RESOURCE_NAME_PIN_FUNCTION */
NULL, /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use subtype table below */
acpi_rs_convert_pin_config, /* 0x0F, ACPI_RESOURCE_NAME_PIN_CONFIG */
};
/* Subtype table for serial_bus -- I2C, SPI, and UART */
......@@ -159,6 +161,7 @@ struct acpi_rsdump_info *acpi_gbl_dump_resource_dispatch[] = {
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 */
acpi_rs_dump_pin_config, /* ACPI_RESOURCE_TYPE_PIN_CONFIG */
};
struct acpi_rsdump_info *acpi_gbl_dump_serial_bus_dispatch[] = {
......@@ -196,6 +199,7 @@ const u8 acpi_gbl_aml_resource_sizes[] = {
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 */
sizeof(struct aml_resource_pin_config), /* ACPI_RESOURCE_TYPE_PIN_CONFIG */
};
const u8 acpi_gbl_resource_struct_sizes[] = {
......@@ -234,7 +238,8 @@ const u8 acpi_gbl_resource_struct_sizes[] = {
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)
ACPI_RS_SIZE(struct acpi_resource_common_serialbus),
ACPI_RS_SIZE(struct acpi_resource_pin_config),
};
const u8 acpi_gbl_aml_resource_serial_bus_sizes[] = {
......
......@@ -534,3 +534,81 @@ struct acpi_rsconvert_info acpi_rs_convert_uart_serial_bus[23] = {
AML_OFFSET(uart_serial_bus.default_baud_rate),
1},
};
/*******************************************************************************
*
* acpi_rs_convert_pin_config
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_pin_config[14] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_PIN_CONFIG,
ACPI_RS_SIZE(struct acpi_resource_pin_config),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_pin_config)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_PIN_CONFIG,
sizeof(struct aml_resource_pin_config),
0},
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.pin_config.revision_id),
AML_OFFSET(pin_config.revision_id),
1},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.pin_config.sharable),
AML_OFFSET(pin_config.flags),
0},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.pin_config.producer_consumer),
AML_OFFSET(pin_config.flags),
1},
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.pin_config.pin_config_type),
AML_OFFSET(pin_config.pin_config_type),
1},
{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.pin_config.pin_config_value),
AML_OFFSET(pin_config.pin_config_value),
1},
/* 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_config.pin_table_length),
AML_OFFSET(pin_config.pin_table_offset),
AML_OFFSET(pin_config.res_source_offset)},
{ACPI_RSC_MOVE_GPIO_PIN, ACPI_RS_OFFSET(data.pin_config.pin_table),
AML_OFFSET(pin_config.pin_table_offset),
0},
/* Resource Source */
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.pin_config.resource_source.index),
AML_OFFSET(pin_config.res_source_index),
1},
{ACPI_RSC_COUNT_GPIO_RES,
ACPI_RS_OFFSET(data.pin_config.resource_source.string_length),
AML_OFFSET(pin_config.res_source_offset),
AML_OFFSET(pin_config.vendor_offset)},
{ACPI_RSC_MOVE_GPIO_RES,
ACPI_RS_OFFSET(data.pin_config.resource_source.string_ptr),
AML_OFFSET(pin_config.res_source_offset),
0},
/* Vendor Data */
{ACPI_RSC_COUNT_GPIO_VEN, ACPI_RS_OFFSET(data.pin_config.vendor_length),
AML_OFFSET(pin_config.vendor_length),
1},
{ACPI_RSC_MOVE_GPIO_RES, ACPI_RS_OFFSET(data.pin_config.vendor_data),
AML_OFFSET(pin_config.vendor_offset),
0},
};
......@@ -291,6 +291,25 @@ const char *acpi_gbl_pt_decode[] = {
"/* UNKNOWN parity keyword */"
};
/* pin_config type */
const char *acpi_gbl_ptyp_decode[] = {
"Default",
"Bias Pull-up",
"Bias Pull-down",
"Bias Default",
"Bias Disable",
"Bias High Impedance",
"Bias Bus Hold",
"Drive Open Drain",
"Drive Open Source",
"Drive Push Pull",
"Drive Strength",
"Slew Rate",
"Input Debounce",
"Input Schmitt Trigger",
};
#endif
/*
......@@ -334,6 +353,7 @@ const u8 acpi_gbl_resource_aml_sizes[] = {
ACPI_AML_SIZE_LARGE(struct aml_resource_gpio),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_function),
ACPI_AML_SIZE_LARGE(struct aml_resource_common_serialbus),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_config),
};
const u8 acpi_gbl_resource_aml_serial_bus_sizes[] = {
......@@ -385,7 +405,8 @@ static const u8 acpi_gbl_resource_types[] = {
ACPI_FIXED_LENGTH, /* 0B Extended* address */
ACPI_VARIABLE_LENGTH, /* 0C Gpio* */
ACPI_VARIABLE_LENGTH, /* 0D pin_function */
ACPI_VARIABLE_LENGTH /* 0E *serial_bus */
ACPI_VARIABLE_LENGTH, /* 0E *serial_bus */
ACPI_VARIABLE_LENGTH, /* 0F pin_config */
};
/*******************************************************************************
......
......@@ -546,6 +546,36 @@ struct acpi_resource_pin_function {
u8 *vendor_data;
};
struct acpi_resource_pin_config {
u8 revision_id;
u8 producer_consumer; /* For values, see Producer/Consumer above */
u8 sharable; /* For values, see Interrupt Attributes above */
u8 pin_config_type;
u32 pin_config_value;
u16 pin_table_length;
u16 vendor_length;
struct acpi_resource_source resource_source;
u16 *pin_table;
u8 *vendor_data;
};
/* Values for pin_config_type field above */
#define ACPI_PIN_CONFIG_DEFAULT 0
#define ACPI_PIN_CONFIG_BIAS_PULL_UP 1
#define ACPI_PIN_CONFIG_BIAS_PULL_DOWN 2
#define ACPI_PIN_CONFIG_BIAS_DEFAULT 3
#define ACPI_PIN_CONFIG_BIAS_DISABLE 4
#define ACPI_PIN_CONFIG_BIAS_HIGH_IMPEDANCE 5
#define ACPI_PIN_CONFIG_BIAS_BUS_HOLD 6
#define ACPI_PIN_CONFIG_DRIVE_OPEN_DRAIN 7
#define ACPI_PIN_CONFIG_DRIVE_OPEN_SOURCE 8
#define ACPI_PIN_CONFIG_DRIVE_PUSH_PULL 9
#define ACPI_PIN_CONFIG_DRIVE_STRENGTH 10
#define ACPI_PIN_CONFIG_SLEW_RATE 11
#define ACPI_PIN_CONFIG_INPUT_DEBOUNCE 12
#define ACPI_PIN_CONFIG_INPUT_SCHMITT_TRIGGER 13
/* ACPI_RESOURCE_TYPEs */
#define ACPI_RESOURCE_TYPE_IRQ 0
......@@ -569,7 +599,8 @@ struct acpi_resource_pin_function {
#define ACPI_RESOURCE_TYPE_FIXED_DMA 18 /* ACPI 5.0 */
#define ACPI_RESOURCE_TYPE_SERIAL_BUS 19 /* ACPI 5.0 */
#define ACPI_RESOURCE_TYPE_PIN_FUNCTION 20 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_MAX 20
#define ACPI_RESOURCE_TYPE_PIN_CONFIG 21 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_MAX 21
/* Master union for resource descriptors */
......@@ -598,6 +629,7 @@ union acpi_resource_data {
struct acpi_resource_uart_serialbus uart_serial_bus;
struct acpi_resource_common_serialbus common_serial_bus;
struct acpi_resource_pin_function pin_function;
struct acpi_resource_pin_config pin_config;
/* Common fields */
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment