Device Tables (DT) for IP i2c and top earlgrey. More...

#include "hw/top/dt/dt_i2c.h"

Data Structures
struct	dt_desc_i2c
	Description of instances. More...

Macros
#define	TRY_GET_DT(dt, default)
	Return a pointer to the `dt_i2c_desc_t` structure of the requested `dt` if it's a valid index.

Typedefs
typedef struct dt_desc_i2c	dt_desc_i2c_t
	Description of instances.

Functions
dt_i2c_t	dt_i2c_from_instance_id (dt_instance_id_t inst_id)
	Get the i2c instance from an instance ID.

dt_instance_id_t	dt_i2c_instance_id (dt_i2c_t dt)
	Get the instance ID of an instance.

uint32_t	dt_i2c_reg_block (dt_i2c_t dt, dt_i2c_reg_block_t reg_block)
	Get the register base address of an instance.

dt_plic_irq_id_t	dt_i2c_irq_to_plic_id (dt_i2c_t dt, dt_i2c_irq_t irq)
	Get the PLIC ID of a i2c IRQ for a given instance.

dt_i2c_irq_t	dt_i2c_irq_from_plic_id (dt_i2c_t dt, dt_plic_irq_id_t irq)
	Convert a global IRQ ID to a local i2c IRQ type.

dt_alert_id_t	dt_i2c_alert_to_alert_id (dt_i2c_t dt, dt_i2c_alert_t alert)
	Get the alert ID of a i2c alert for a given instance.

dt_i2c_alert_t	dt_i2c_alert_from_alert_id (dt_i2c_t dt, dt_alert_id_t alert)
	Convert a global alert ID to a local i2c alert type.

dt_periph_io_t	dt_i2c_periph_io (dt_i2c_t dt, dt_i2c_periph_io_t sig)
	Get the peripheral I/O description of an instance.

dt_clock_t	dt_i2c_clock (dt_i2c_t dt, dt_i2c_clock_t clk)
	Get the clock signal connected to a clock port of an instance.

dt_reset_t	dt_i2c_reset (dt_i2c_t dt, dt_i2c_reset_t rst)
	Get the reset signal connected to a reset port of an instance.

Detailed Description

Device Tables (DT) for IP i2c and top earlgrey.

Definition in file dt_i2c.c.

Data Structure Documentation

◆ dt_desc_i2c

struct dt_desc_i2c

Description of instances.

Definition at line 19 of file dt_i2c.c.

Data Fields
uint32_t	base_addr[kDtI2cRegBlockCount]	Base address of each register block.
dt_clock_t	clock[kDtI2cClockCount]	Clock signal connected to each clock port.
top_darjeeling_alert_id_t	first_alert	Alert ID of the first Alert of this instance. This value is undefined if the block is not connected to the Alert Handler.
top_earlgrey_alert_id_t	first_alert	Alert ID of the first Alert of this instance. This value is undefined if the block is not connected to the Alert Handler.
top_darjeeling_plic_irq_id_t	first_irq	PLIC ID of the first IRQ of this instance. This can be `kDtPlicIrqIdNone` if the block is not connected to the PLIC.
top_earlgrey_plic_irq_id_t	first_irq	PLIC ID of the first IRQ of this instance. This can be `kDtPlicIrqIdNone` if the block is not connected to the PLIC.
dt_instance_id_t	inst_id	Instance ID.
dt_periph_io_t	periph_io[kDtI2cPeriphIoCount]	Description of each peripheral I/O.
dt_reset_t	reset[kDtI2cResetCount]	Reset signal connected to each reset port.

Macro Definition Documentation

◆ TRY_GET_DT

#define TRY_GET_DT	(		dt,
			default )

Value:

({ if ((dt) < (dt_i2c_t)0 || (dt) >= kDtI2cCount) return (default); &i2c_desc[dt]; })

Return a pointer to the dt_i2c_desc_t structure of the requested dt if it's a valid index.

Otherwise, this macro will return (i.e. exit the function) with the provided default value.

Definition at line 146 of file dt_i2c.c.

Function Documentation

◆ dt_i2c_alert_from_alert_id()

dt_i2c_alert_t dt_i2c_alert_from_alert_id	(	dt_i2c_t	dt,
		dt_alert_id_t	alert )

Convert a global alert ID to a local i2c alert type.

Parameters

dt	Instance of i2c.
alert	A global alert ID that belongs to this instance.

Returns: The i2c alert, or kDtI2cAlertCount.

Note: This function assumes that the global alert ID belongs to the instance of i2c passed in parameter. In other words, it must be the case that dt_i2c_instance_id(dt) == dt_alert_id_to_instance_id(alert). Otherwise, this function will return kDtI2cAlertCount.

Definition at line 198 of file dt_i2c.c.

◆ dt_i2c_alert_to_alert_id()

dt_alert_id_t dt_i2c_alert_to_alert_id	(	dt_i2c_t	dt,
		dt_i2c_alert_t	alert )

Get the alert ID of a i2c alert for a given instance.

Note: This function only makes sense if the instance is connected to the Alert Handler. For any instances where the instance is not connected, the return value is unspecified.

Parameters

dt	Instance of i2c.
alert	A i2c alert.

Returns: The Alert Handler alert ID of the alert of this instance.

Definition at line 192 of file dt_i2c.c.

◆ dt_i2c_clock()

dt_clock_t dt_i2c_clock	(	dt_i2c_t	dt,
		dt_i2c_clock_t	clk )

Get the clock signal connected to a clock port of an instance.

Parameters

dt	Instance of i2c.
clk	Clock port.

Returns: Clock signal.

Definition at line 216 of file dt_i2c.c.

◆ dt_i2c_from_instance_id()

dt_i2c_t dt_i2c_from_instance_id ( dt_instance_id_t inst_id )

Get the i2c instance from an instance ID.

For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.

Parameters

inst_id Instance ID.

Returns: A i2c instance.

Note: This function only makes sense if the instance ID has device type i2c, otherwise the returned value is unspecified.

Definition at line 148 of file dt_i2c.c.

◆ dt_i2c_instance_id()

dt_instance_id_t dt_i2c_instance_id ( dt_i2c_t dt )

Get the instance ID of an instance.

Parameters

dt	Instance of i2c.

Returns: The instance ID of that instance.

Definition at line 155 of file dt_i2c.c.

◆ dt_i2c_irq_from_plic_id()

dt_i2c_irq_t dt_i2c_irq_from_plic_id	(	dt_i2c_t	dt,
		dt_plic_irq_id_t	irq )

Convert a global IRQ ID to a local i2c IRQ type.

Parameters

dt	Instance of i2c.
irq	A PLIC ID that belongs to this instance.

Returns: The i2c IRQ, or kDtI2cIrqCount.

Note: This function assumes that the PLIC ID belongs to the instance of i2c passed in parameter. In other words, it must be the case that dt_i2c_instance_id(dt) == dt_plic_id_to_instance_id(irq). Otherwise, this function will return kDtI2cIrqCount.

Definition at line 177 of file dt_i2c.c.

◆ dt_i2c_irq_to_plic_id()

dt_plic_irq_id_t dt_i2c_irq_to_plic_id	(	dt_i2c_t	dt,
		dt_i2c_irq_t	irq )

Get the PLIC ID of a i2c IRQ for a given instance.

If the instance is not connected to the PLIC, this function will return kDtPlicIrqIdNone.

Parameters

dt	Instance of i2c.
irq	A i2c IRQ.

Returns: The PLIC ID of the IRQ of this instance.

Definition at line 167 of file dt_i2c.c.

◆ dt_i2c_periph_io()

dt_periph_io_t dt_i2c_periph_io	(	dt_i2c_t	dt,
		dt_i2c_periph_io_t	sig )

Get the peripheral I/O description of an instance.

Parameters

dt	Instance of i2c.
sig	Requested peripheral I/O.

Returns: Description of the requested peripheral I/O for this instance.

Definition at line 209 of file dt_i2c.c.

◆ dt_i2c_reg_block()

uint32_t dt_i2c_reg_block	(	dt_i2c_t	dt,
		dt_i2c_reg_block_t	reg_block )

Get the register base address of an instance.

Parameters

dt	Instance of i2c.
reg_block	The register block requested.

Returns: The register base address of the requested block.

Definition at line 160 of file dt_i2c.c.

◆ dt_i2c_reset()

dt_reset_t dt_i2c_reset	(	dt_i2c_t	dt,
		dt_i2c_reset_t	rst )

Get the reset signal connected to a reset port of an instance.

Parameters

dt	Instance of i2c.
rst	Reset port.

Returns: Reset signal.

Definition at line 223 of file dt_i2c.c.

Data Structures

Macros

Typedefs

Functions

Detailed Description

Data Structure Documentation

◆ dt_desc_i2c

Macro Definition Documentation

◆ TRY_GET_DT

Function Documentation

◆ dt_i2c_alert_from_alert_id()

◆ dt_i2c_alert_to_alert_id()

◆ dt_i2c_clock()

◆ dt_i2c_from_instance_id()

◆ dt_i2c_instance_id()

◆ dt_i2c_irq_from_plic_id()

◆ dt_i2c_irq_to_plic_id()

◆ dt_i2c_periph_io()

◆ dt_i2c_reg_block()

◆ dt_i2c_reset()