/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2022 Intel Corporation
*/
#ifndef __INTEL_GMBUS_REGS_H__
#define __INTEL_GMBUS_REGS_H__
#include "i915_reg_defs.h"
#define GMBUS_MMIO_BASE(__i915) ((__i915)->display.gmbus.mmio_base)
#define GPIO(__i915, gpio) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x5010 + 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(__i915) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x5100)
#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(__i915) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x5104)
#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 256U
#define GEN9_GMBUS_BYTE_COUNT_MAX 511U
#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(__i915) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x5108)
#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(__i915) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x510c)
/* interrupt mask (Pineview+) */
#define GMBUS4(__i915) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x5110)
#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(__i915) _MMIO(GMBUS_MMIO_BASE(__i915) + 0x5120)
#define GMBUS_2BYTE_INDEX_EN (1 << 31)
#endif /* __INTEL_GMBUS_REGS_H__ */
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