/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2022 Intel Corporation
*/
#ifndef __INTEL_GMBUS_REGS_H__
#define __INTEL_GMBUS_REGS_H__
#include "intel_display_reg_defs.h"
#define __GMBUS_MMIO_BASE(__display) ((__display)->gmbus.mmio_base)
#define GPIO(__display, gpio) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x5010 + 4 * (gpio))
#define GPIO_CLOCK_DIR_MASK (1 << 0 )
#define GPIO_CLOCK_DIR_IN (0 << 1 )
#define GPIO_CLOCK_DIR_OUT (1 << 1 )
#define GPIO_CLOCK_VAL_MASK (1 << 2 )
#define GPIO_CLOCK_VAL_OUT (1 << 3 )
#define GPIO_CLOCK_VAL_IN (1 << 4 )
#define GPIO_CLOCK_PULLUP_DISABLE (1 << 5 )
#define GPIO_DATA_DIR_MASK (1 << 8 )
#define GPIO_DATA_DIR_IN (0 << 9 )
#define GPIO_DATA_DIR_OUT (1 << 9 )
#define GPIO_DATA_VAL_MASK (1 << 10 )
#define GPIO_DATA_VAL_OUT (1 << 11 )
#define GPIO_DATA_VAL_IN (1 << 12 )
#define GPIO_DATA_PULLUP_DISABLE (1 << 13 )
/* clock/port select */
#define GMBUS0(__display) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x5100)
#define GMBUS_AKSV_SELECT (1 << 11 )
#define GMBUS_RATE_100KHZ (0 << 8 )
#define GMBUS_RATE_50KHZ (1 << 8 )
#define GMBUS_RATE_400KHZ (2 << 8 ) /* reserved on Pineview */
#define GMBUS_RATE_1MHZ (3 << 8 ) /* reserved on Pineview */
#define GMBUS_HOLD_EXT (1 << 7 ) /* 300ns hold time, rsvd on Pineview */
#define GMBUS_BYTE_CNT_OVERRIDE (1 << 6 )
/* command/status */
#define GMBUS1(__display) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x5104)
#define GMBUS_SW_CLR_INT (1 << 31 )
#define GMBUS_SW_RDY (1 << 30 )
#define GMBUS_ENT (1 << 29 ) /* enable timeout */
#define GMBUS_CYCLE_NONE (0 << 25 )
#define GMBUS_CYCLE_WAIT (1 << 25 )
#define GMBUS_CYCLE_INDEX (2 << 25 )
#define GMBUS_CYCLE_STOP (4 << 25 )
#define GMBUS_BYTE_COUNT_SHIFT 16
#define GMBUS_BYTE_COUNT_MAX 256 U
#define GEN9_GMBUS_BYTE_COUNT_MAX 511 U
#define GMBUS_SLAVE_INDEX_SHIFT 8
#define GMBUS_SLAVE_ADDR_SHIFT 1
#define GMBUS_SLAVE_READ (1 << 0 )
#define GMBUS_SLAVE_WRITE (0 << 0 )
/* status */
#define GMBUS2(__display) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x5108)
#define GMBUS_INUSE (1 << 15 )
#define GMBUS_HW_WAIT_PHASE (1 << 14 )
#define GMBUS_STALL_TIMEOUT (1 << 13 )
#define GMBUS_INT (1 << 12 )
#define GMBUS_HW_RDY (1 << 11 )
#define GMBUS_SATOER (1 << 10 )
#define GMBUS_ACTIVE (1 << 9 )
/* data buffer bytes 3-0 */
#define GMBUS3(__display) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x510c)
/* interrupt mask (Pineview+) */
#define GMBUS4(__display) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x5110)
#define GMBUS_SLAVE_TIMEOUT_EN (1 << 4 )
#define GMBUS_NAK_EN (1 << 3 )
#define GMBUS_IDLE_EN (1 << 2 )
#define GMBUS_HW_WAIT_EN (1 << 1 )
#define GMBUS_HW_RDY_EN (1 << 0 )
/* byte index */
#define GMBUS5(__display) _MMIO(__GMBUS_MMIO_BASE(__display) + 0 x5120)
#define GMBUS_2BYTE_INDEX_EN (1 << 31 )
#endif /* __INTEL_GMBUS_REGS_H__ */
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(vorverarbeitet am 2026-06-08)
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