/* SPDX-License-Identifier: MIT */
/* Copyright © 2025 Intel Corporation */

#ifndef __INTEL_SBI_REGS_H__
#define __INTEL_SBI_REGS_H__

#include "intel_display_reg_defs.h"

/*
 * Sideband Interface (SBI) is programmed indirectly, via SBI_ADDR, which
 * contains the register offset; and SBI_DATA, which contains the payload.
 */
#define SBI_ADDR                        _MMIO(0xC6000)
#define   SBI_ADDR_MASK                 REG_GENMASK(31, 16)
#define   SBI_ADDR_VALUE(addr)          REG_FIELD_PREP(SBI_ADDR_MASK, (addr))

#define SBI_DATA                        _MMIO(0xC6004)

#define SBI_CTL_STAT                    _MMIO(0xC6008)
#define   SBI_CTL_DEST_MASK             REG_GENMASK(16, 16)
#define   SBI_CTL_DEST_ICLK             REG_FIELD_PREP(SBI_CTL_DEST_MASK, 0)
#define   SBI_CTL_DEST_MPHY             REG_FIELD_PREP(SBI_CTL_DEST_MASK, 1)
#define   SBI_CTL_OP_MASK               REG_GENMASK(15, 8)
#define   SBI_CTL_OP_IORD               REG_FIELD_PREP(SBI_CTL_OP_MASK, 2)
#define   SBI_CTL_OP_IOWR               REG_FIELD_PREP(SBI_CTL_OP_MASK, 3)
#define   SBI_CTL_OP_CRRD               REG_FIELD_PREP(SBI_CTL_OP_MASK, 6)
#define   SBI_CTL_OP_CRWR               REG_FIELD_PREP(SBI_CTL_OP_MASK, 7)
#define   SBI_CTL_OP_WR                 REG_BIT(8)
#define   SBI_RESPONSE_MASK             REG_GENMASK(2, 1)
#define   SBI_RESPONSE_FAIL             REG_FIELD_PREP(SBI_RESPONSE_MASK, 1)
#define   SBI_RESPONSE_SUCCESS          REG_FIELD_PREP(SBI_RESPONSE_MASK, 0)
#define   SBI_STATUS_MASK               REG_GENMASK(0, 0)
#define   SBI_STATUS_BUSY               REG_FIELD_PREP(SBI_STATUS_MASK, 1)
#define   SBI_STATUS_READY              REG_FIELD_PREP(SBI_STATUS_MASK, 0)

/* SBI offsets */
#define SBI_SSCDIVINTPHASE                      0x0200

#define SBI_SSCDIVINTPHASE6                     0x0600
#define   SBI_SSCDIVINTPHASE_DIVSEL_SHIFT       1
#define   SBI_SSCDIVINTPHASE_DIVSEL_MASK        (0x7f << 1)
#define   SBI_SSCDIVINTPHASE_DIVSEL(x)          ((x) << 1)
#define   SBI_SSCDIVINTPHASE_INCVAL_SHIFT       8
#define   SBI_SSCDIVINTPHASE_INCVAL_MASK        (0x7f << 8)
#define   SBI_SSCDIVINTPHASE_INCVAL(x)          ((x) << 8)
#define   SBI_SSCDIVINTPHASE_DIR(x)             ((x) << 15)
#define   SBI_SSCDIVINTPHASE_PROPAGATE          (1 << 0)

#define SBI_SSCDITHPHASE                        0x0204
#define SBI_SSCCTL                              0x020c
#define SBI_SSCCTL6                             0x060C
#define   SBI_SSCCTL_PATHALT                    (1 << 3)
#define   SBI_SSCCTL_DISABLE                    (1 << 0)

#define SBI_SSCAUXDIV6                          0x0610
#define   SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT      4
#define   SBI_SSCAUXDIV_FINALDIV2SEL_MASK       (1 << 4)
#define   SBI_SSCAUXDIV_FINALDIV2SEL(x)         ((x) << 4)

#define SBI_DBUFF0                              0x2a00

#define SBI_GEN0                                0x1f00
#define   SBI_GEN0_CFG_BUFFENABLE_DISABLE       (1 << 0)

#endif /* __INTEL_SBI_REGS_H__ */