From: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
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/a06fdba6
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
---
drivers/acpi/acpica/aclocal.h | 3 +-
drivers/acpi/acpica/acresrc.h | 2 ++
drivers/acpi/acpica/acutils.h | 1 +
drivers/acpi/acpica/amlresrc.h | 23 ++++++++++++
drivers/acpi/acpica/rscalc.c | 31 ++++++++++++++++
drivers/acpi/acpica/rsdumpinfo.c | 25 +++++++++++++
drivers/acpi/acpica/rsinfo.c | 7 +++-
drivers/acpi/acpica/rsserial.c | 78 ++++++++++++++++++++++++++++++++++++++++
drivers/acpi/acpica/utresrc.c | 23 +++++++++++-
include/acpi/acrestyp.h | 34 +++++++++++++++++-
10 files changed, 223 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index b73db9b..115cadd 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -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
/*****************************************************************************
*
diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h
index bd238b41..61d2ef3 100644
--- a/drivers/acpi/acpica/acresrc.h
+++ b/drivers/acpi/acpica/acresrc.h
@@ -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__ */
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 6f28cfa..2a3cc429 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.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
/*
diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h
index e34396c..6f8d8f90 100644
--- a/drivers/acpi/acpica/amlresrc.h
+++ b/drivers/acpi/acpica/amlresrc.h
@@ -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 */
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index 167ece9..9fdc9c1 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -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;
diff --git a/drivers/acpi/acpica/rsdumpinfo.c b/drivers/acpi/acpica/rsdumpinfo.c
index afc0441..e684722 100644
--- a/drivers/acpi/acpica/rsdumpinfo.c
+++ b/drivers/acpi/acpica/rsdumpinfo.c
@@ -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},
diff --git a/drivers/acpi/acpica/rsinfo.c b/drivers/acpi/acpica/rsinfo.c
index e7310712..5634bd6 100644
--- a/drivers/acpi/acpica/rsinfo.c
+++ b/drivers/acpi/acpica/rsinfo.c
@@ -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[] = {
diff --git a/drivers/acpi/acpica/rsserial.c b/drivers/acpi/acpica/rsserial.c
index fd11d0c..01bc851 100644
--- a/drivers/acpi/acpica/rsserial.c
+++ b/drivers/acpi/acpica/rsserial.c
@@ -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},
+};
diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c
index 8dd0995..2d3e988 100644
--- a/drivers/acpi/acpica/utresrc.c
+++ b/drivers/acpi/acpica/utresrc.c
@@ -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 */
};
/*******************************************************************************
diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h
index cf6996e..2b41ed1 100644
--- a/include/acpi/acrestyp.h
+++ b/include/acpi/acrestyp.h
@@ -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 */
--
2.7.4
--
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