/*
 * Copyright (c) 2014-2015 MediaTek Inc.
 * Author: Chaotian.Jing <chaotian.jing@mediatek.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifdef CONFIG_PM_DEVFREQ
#include <linux/pm_qos.h>
#ifdef CONFIG_MACH_MT8168
#include "helio-dvfsrc-opp-mt8168.h"
#else
#ifdef CONFIG_MACH_MT8183
#include "helio-dvfsrc-opp-mt8183.h"
#endif
#endif
#endif

#define MAX_BD_NUM          1024

/* ddr208 mode used by SDIO3.0 plus */
#define MSDC_SDIO_DDR208    (1 << 7)

/*--------------------------------------------------------------------------*/
/* Common Definition                                                        */
/*--------------------------------------------------------------------------*/
#define MSDC_BUS_1BITS          0x0
#define MSDC_BUS_4BITS          0x1
#define MSDC_BUS_8BITS          0x2

#define MSDC_BURST_64B          0x6

/*--------------------------------------------------------------------------*/
/* Base Register Offset                                                          */
/*--------------------------------------------------------------------------*/
#define MSDC_CFG         0x0
#define MSDC_IOCON       0x04
#define MSDC_PS          0x08
#define MSDC_INT         0x0c
#define MSDC_INTEN       0x10
#define MSDC_FIFOCS      0x14
#define MSDC_TXDATA      0x18
#define MSDC_RXDATA      0x1c
#define SDC_CFG          0x30
#define SDC_CMD          0x34
#define SDC_ARG          0x38
#define SDC_STS          0x3c
#define SDC_RESP0        0x40
#define SDC_RESP1        0x44
#define SDC_RESP2        0x48
#define SDC_RESP3        0x4c
#define SDC_BLK_NUM      0x50
#define SDC_ADV_CFG0     0x64
#define EMMC_IOCON       0x7c
#define SDC_ACMD_RESP    0x80
#define DMA_SA_H4BIT     0x8c
#define MSDC_DMA_SA      0x90
#define MSDC_DMA_CTRL    0x98
#define MSDC_DMA_CFG     0x9c
#define MSDC_DBG_SEL     0xa0
#define MSDC_DBG_OUT	 0xa4
#define MSDC_DMA_LEN	 0xa8
#define MSDC_PATCH_BIT0	 0xb0
#define MSDC_PATCH_BIT1  0xb4
#define MSDC_PATCH_BIT2  0xb8
#define DAT0_TUNE_CRC	 0xc0
#define DAT1_TUNE_CRC	 0xc4
#define DAT2_TUNE_CRC	 0xc8
#define DAT3_TUNE_CRC	 0xcc
#define CMD_TUNE_CRC	 0xd0
#define SDIO_TUNE_WIND	 0xd4
#define MSDC_PAD_TUNE0   0xf0
#define MSDC_HW_DBG	 0x110
#define MSDC_VERSION	 0x114
#define MSDC_ECO_VER	 0x118
#define SDC_FIFO_CFG     0x228

/*--------------------------------------------------------------------------*/
/* for mt8173 mt8135 Only                                                   */
/*--------------------------------------------------------------------------*/
#define MSDC_PAD_TUNE    0xec

/*--------------------------------------------------------------------------*/
/* for IC with no top register                                              */
/*--------------------------------------------------------------------------*/
#define MSDC_PAD_TUNE1	 0xf4
#define PAD_DS_TUNE      0x188
#define PAD_CMD_TUNE     0x18c
#define EMMC50_PAD_DAT01_TUNE	0x190
#define EMMC50_PAD_DAT23_TUNE	0x194
#define EMMC50_PAD_DAT45_TUNE	0x198
#define EMMC50_PAD_DAT67_TUNE	0x19c
#define EMMC50_CFG0		0x208
#define EMMC50_CFG1		0x20c
#define EMMC50_CFG2		0x21c
#define EMMC50_CFG3		0x220
#define EMMC50_CFG4		0x224

#define MAX_REGISTER_ADDR	0x228

/*--------------------------------------------------------------------------*/
/* Top Register Offset                                                      */
/*--------------------------------------------------------------------------*/
#define SD_TOP_CONTROL		(0x00)
#define SD_TOP_CMD			(0x04)
#define SD_PAD_CTRL0		(0x08)
#define SD50_PAD_DAT0_TUNE	(0x10)
#define SD50_PAD_DAT1_TUNE	(0x14)
#define SD50_PAD_DAT2_TUNE	(0x18)
#define SD50_PAD_DAT3_TUNE	(0x1c)


/*--------------------------------------------------------------------------*/
/* Register Mask                                                            */
/*--------------------------------------------------------------------------*/

/* MSDC_CFG mask */
#define MSDC_CFG_MODE           (0x1 << 0)	/* RW */
#define MSDC_CFG_CKPDN          (0x1 << 1)	/* RW */
#define MSDC_CFG_RST            (0x1 << 2)	/* RW */
#define MSDC_CFG_PIO            (0x1 << 3)	/* RW */
#define MSDC_CFG_CKDRVEN        (0x1 << 4)	/* RW */
#define MSDC_CFG_BV18SDT        (0x1 << 5)	/* RW */
#define MSDC_CFG_BV18PSS        (0x1 << 6)	/* R  */
#define MSDC_CFG_CKSTB          (0x1 << 7)	/* R  */
#define MSDC_CFG_CKDIV          (0xff << 8)	/* RW */
#define MSDC_CFG_CKMOD          (0x3 << 16)	/* RW */
#define MSDC_CFG_HS400_CK_MODE  (0x1 << 18)	/* RW */
#define MSDC_CFG_HS400_CK_MODE_EXTRA  (0x1 << 22)	/* RW */
#define MSDC_CFG_CKDIV_EXTRA    (0xfff << 8)	/* RW */
#define MSDC_CFG_CKMOD_EXTRA    (0x3 << 20)	/* RW */

/* MSDC_IOCON mask */
#define MSDC_IOCON_SDR104CKS    (0x1 << 0)	/* RW */
#define MSDC_IOCON_RSPL         (0x1 << 1)	/* RW */
#define MSDC_IOCON_DSPL         (0x1 << 2)	/* RW */
#define MSDC_IOCON_DDLSEL       (0x1 << 3)	/* RW */
#define MSDC_IOCON_DDR50CKD     (0x1 << 4)	/* RW */
#define MSDC_IOCON_DSPLSEL      (0x1 << 5)	/* RW */
#define MSDC_IOCON_W_DSPL       (0x1 << 8)	/* RW */
#define MSDC_IOCON_D0SPL        (0x1 << 16)	/* RW */
#define MSDC_IOCON_D1SPL        (0x1 << 17)	/* RW */
#define MSDC_IOCON_D2SPL        (0x1 << 18)	/* RW */
#define MSDC_IOCON_D3SPL        (0x1 << 19)	/* RW */
#define MSDC_IOCON_D4SPL        (0x1 << 20)	/* RW */
#define MSDC_IOCON_D5SPL        (0x1 << 21)	/* RW */
#define MSDC_IOCON_D6SPL        (0x1 << 22)	/* RW */
#define MSDC_IOCON_D7SPL        (0x1 << 23)	/* RW */
#define MSDC_IOCON_RISCSZ       (0x3 << 24)	/* RW */

/* MSDC_PS mask */
#define MSDC_PS_CDEN            (0x1 << 0)	/* RW */
#define MSDC_PS_CDSTS           (0x1 << 1)	/* R  */
#define MSDC_PS_CDDEBOUNCE      (0xf << 12)	/* RW */
#define MSDC_PS_DAT             (0xff << 16)	/* R  */
#define MSDC_PS_CMD             (0x1 << 24)	/* R  */
#define MSDC_PS_WP              (0x1 << 31)	/* R  */

/* MSDC_INT mask */
#define MSDC_INT_MMCIRQ         (0x1 << 0)	/* W1C */
#define MSDC_INT_CDSC           (0x1 << 1)	/* W1C */
#define MSDC_INT_ACMDRDY        (0x1 << 3)	/* W1C */
#define MSDC_INT_ACMDTMO        (0x1 << 4)	/* W1C */
#define MSDC_INT_ACMDCRCERR     (0x1 << 5)	/* W1C */
#define MSDC_INT_DMAQ_EMPTY     (0x1 << 6)	/* W1C */
#define MSDC_INT_SDIOIRQ        (0x1 << 7)	/* W1C */
#define MSDC_INT_CMDRDY         (0x1 << 8)	/* W1C */
#define MSDC_INT_CMDTMO         (0x1 << 9)	/* W1C */
#define MSDC_INT_RSPCRCERR      (0x1 << 10)	/* W1C */
#define MSDC_INT_CSTA           (0x1 << 11)	/* R */
#define MSDC_INT_XFER_COMPL     (0x1 << 12)	/* W1C */
#define MSDC_INT_DXFER_DONE     (0x1 << 13)	/* W1C */
#define MSDC_INT_DATTMO         (0x1 << 14)	/* W1C */
#define MSDC_INT_DATCRCERR      (0x1 << 15)	/* W1C */
#define MSDC_INT_ACMD19_DONE    (0x1 << 16)	/* W1C */
#define MSDC_INT_DMA_BDCSERR    (0x1 << 17)	/* W1C */
#define MSDC_INT_DMA_GPDCSERR   (0x1 << 18)	/* W1C */
#define MSDC_INT_DMA_PROTECT    (0x1 << 19)	/* W1C */

/* MSDC_INTEN mask */
#define MSDC_INTEN_MMCIRQ       (0x1 << 0)	/* RW */
#define MSDC_INTEN_CDSC         (0x1 << 1)	/* RW */
#define MSDC_INTEN_ACMDRDY      (0x1 << 3)	/* RW */
#define MSDC_INTEN_ACMDTMO      (0x1 << 4)	/* RW */
#define MSDC_INTEN_ACMDCRCERR   (0x1 << 5)	/* RW */
#define MSDC_INTEN_DMAQ_EMPTY   (0x1 << 6)	/* RW */
#define MSDC_INTEN_SDIOIRQ      (0x1 << 7)	/* RW */
#define MSDC_INTEN_CMDRDY       (0x1 << 8)	/* RW */
#define MSDC_INTEN_CMDTMO       (0x1 << 9)	/* RW */
#define MSDC_INTEN_RSPCRCERR    (0x1 << 10)	/* RW */
#define MSDC_INTEN_CSTA         (0x1 << 11)	/* RW */
#define MSDC_INTEN_XFER_COMPL   (0x1 << 12)	/* RW */
#define MSDC_INTEN_DXFER_DONE   (0x1 << 13)	/* RW */
#define MSDC_INTEN_DATTMO       (0x1 << 14)	/* RW */
#define MSDC_INTEN_DATCRCERR    (0x1 << 15)	/* RW */
#define MSDC_INTEN_ACMD19_DONE  (0x1 << 16)	/* RW */
#define MSDC_INTEN_DMA_BDCSERR  (0x1 << 17)	/* RW */
#define MSDC_INTEN_DMA_GPDCSERR (0x1 << 18)	/* RW */
#define MSDC_INTEN_DMA_PROTECT  (0x1 << 19)	/* RW */

/* MSDC_FIFOCS mask */
#define MSDC_FIFOCS_RXCNT       (0xff << 0)	/* R */
#define MSDC_FIFOCS_TXCNT       (0xff << 16)	/* R */
#define MSDC_FIFOCS_CLR         (0x1 << 31)	/* RW */

/* SDC_CFG mask */
#define SDC_CFG_SDIOINTWKUP     (0x1 << 0)	/* RW */
#define SDC_CFG_INSWKUP         (0x1 << 1)	/* RW */
#define SDC_CFG_BUSWIDTH        (0x3 << 16)	/* RW */
#define SDC_CFG_SDIO            (0x1 << 19)	/* RW */
#define SDC_CFG_SDIOIDE         (0x1 << 20)	/* RW */
#define SDC_CFG_INTATGAP        (0x1 << 21)	/* RW */
#define SDC_CFG_DTOC            (0xff << 24)	/* RW */

/* SDC_STS mask */
#define SDC_STS_SDCBUSY         (0x1 << 0)	/* RW */
#define SDC_STS_CMDBUSY         (0x1 << 1)	/* RW */
#define SDC_STS_SWR_COMPL       (0x1 << 31)	/* RW */

/* SDC_ADV_CFG0 mask */
#define SDC_CMD_RESP_CRC        (0x7f  << 0) /* RW */
#define SDC_RX_ENHANCE_EN	(0x1 << 20)	/* RW */

/* DMA_SA_H4BIT mask */
#define DMA_ADDR_HIGH_4BIT      (0xf << 0)      /* RW */

/* MSDC_DMA_CTRL mask */
#define MSDC_DMA_CTRL_START     (0x1 << 0)	/* W */
#define MSDC_DMA_CTRL_STOP      (0x1 << 1)	/* W */
#define MSDC_DMA_CTRL_RESUME    (0x1 << 2)	/* W */
#define MSDC_DMA_CTRL_MODE      (0x1 << 8)	/* RW */
#define MSDC_DMA_CTRL_LASTBUF   (0x1 << 10)	/* RW */
#define MSDC_DMA_CTRL_BRUSTSZ   (0x7 << 12)	/* RW */

/* MSDC_DMA_CFG mask */
#define MSDC_DMA_CFG_STS        (0x1 << 0)	/* R */
#define MSDC_DMA_CFG_DECSEN     (0x1 << 1)	/* RW */
#define MSDC_DMA_CFG_AHBHPROT2  (0x2 << 8)	/* RW */
#define MSDC_DMA_CFG_ACTIVEEN   (0x2 << 12)	/* RW */
#define MSDC_DMA_CFG_CS12B16B   (0x1 << 16)	/* RW */

/* MSDC_PATCH_BIT0 mask */
#define MSDC_PB0_RESV1                  (0x1 << 0)
#define MSDC_PB0_EN_8BITSUP             (0x1 << 1)
#define MSDC_PB0_DIS_RECMDWR            (0x1 << 2)
#define MSDC_PB0_RD_DAT_SEL             (0x1 << 3)
#define MSDC_PB0_RESV2                  (0x3 << 4)
#define MSDC_PB0_DESCUP                 (0x1 << 6)
#define MSDC_PB0_INT_DAT_LATCH_CK_SEL   (0x7 << 7)
#define MSDC_PB0_CKGEN_MSDC_DLY_SEL     (0x1F<<10)
#define MSDC_PB0_FIFORD_DIS             (0x1 << 15)
#define MSDC_PB0_BLKNUM_SEL             (0x1 << 16)
#define MSDC_PB0_SDIO_INTCSEL           (0x1 << 17)
#define MSDC_PB0_SDC_BSYDLY             (0xf << 18)
#define MSDC_PB0_SDC_WDOD               (0xf << 22)
#define MSDC_PB0_CMDIDRTSEL             (0x1 << 26)
#define MSDC_PB0_CMDFAILSEL             (0x1 << 27)
#define MSDC_PB0_SDIO_INTDLYSEL         (0x1 << 28)
#define MSDC_PB0_SPCPUSH                (0x1 << 29)
#define MSDC_PB0_DETWR_CRCTMO           (0x1 << 30)
#define MSDC_PB0_EN_DRVRSP              (0x1UL << 31)

/* MSDC_PATCH_BIT1 mask */
#define MSDC_PB1_WRDAT_CRCS_TA_CNTR     (0x7 << 0)
#define MSDC_PB1_CMD_RSP_TA_CNTR        (0x7 << 3)
#define MSDC_PB1_GET_BUSY_MA            (0x1 << 6)
#define MSDC_PB1_GET_CRC_MA             (0x1 << 7)
#define MSDC_PB1_STOP_DLY_SEL           (0xf << 8)
#define MSDC_PB1_BIAS_EN18IO_28NM       (0x1 << 12)
#define MSDC_PB1_BIAS_EXT_28NM          (0x1 << 13)
#define MSDC_PB1_RESV2                  (0x1 << 14)
#define MSDC_PB1_DDR_CMD_FIX_SEL	(0x1 << 14)
#define MSDC_PB1_RESET_GDMA             (0x1 << 15)
#define MSDC_PB1_SINGLE_BURST           (0x1 << 16)
#define MSDC_PB1_FROCE_STOP             (0x1 << 17)
#define MSDC_PB1_POP_MARK_WATER         (0x1 << 19)
#define MSDC_PB1_STATE_CLEAR            (0x1 << 20)
#define MSDC_PB1_DCM_EN                 (0x1 << 21)
#define MSDC_PB1_AXI_WRAP_CKEN          (0x1 << 22)
#define MSDC_PB1_CKCLK_GDMA_EN          (0x1 << 23)
#define MSDC_PB1_CKSPCEN                (0x1 << 24)
#define MSDC_PB1_CKPSCEN                (0x1 << 25)
#define MSDC_PB1_CKVOLDETEN             (0x1 << 26)
#define MSDC_PB1_CKACMDEN               (0x1 << 27)
#define MSDC_PB1_CKSDEN                 (0x1 << 28)
#define MSDC_PB1_CKWCTLEN               (0x1 << 29)
#define MSDC_PB1_CKRCTLEN               (0x1 << 30)
#define MSDC_PB1_CKSHBFFEN              (0x1UL << 31)

/* MSDC_PATCH_BIT2 mask */
#define MSDC_PB2_ENHANCEGPD             (0x1 << 0)
#define MSDC_PB2_SUPPORT64G             (0x1 << 1)
#define MSDC_PB2_RESPWAITCNT            (0x3 << 2)
#define MSDC_PB2_CFGRDATCNT             (0x1f << 4)
#define MSDC_PB2_CFGRDAT                (0x1 << 9)
#define MSDC_PB2_INTCRESPSEL            (0x1 << 11)
#define MSDC_PB2_CFGRESPCNT             (0x7 << 12)
#define MSDC_PB2_CFGRESP                (0x1 << 15)
#define MSDC_PB2_DDR50_SEL		(0x1 << 19)   /* RW */
#define MSDC_PB2_RESPSTENSEL            (0x7 << 16)
#define MSDC_PB2_POPENCNT               (0xf << 20)
#define MSDC_PB2_CFG_CRCSTS_SEL         (0x1 << 24)
#define MSDC_PB2_CFGCRCSTSEDGE          (0x1 << 25)
#define MSDC_PB2_CFGCRCSTSCNT           (0x3 << 26)
#define MSDC_PB2_CFGCRCSTS              (0x1 << 28)
#define MSDC_PB2_CRCSTSENSEL            (0x7UL << 29)

#define MSDC_MASK_ACMD53_CRC_ERR_INTR   (0x1<<4)
#define MSDC_ACMD53_FAIL_ONE_SHOT       (0X1<<5)

/* MSDC_PAD_TUNE mask */
#define MSDC_PAD_TUNE0_DATWRDLY         (0x1F <<  0)     /* RW */
#define MSDC_PAD_TUNE0_DELAYEN          (0x1  <<  7)     /* RW */
#define MSDC_PAD_TUNE0_DATRRDLY         (0x1F <<  8)     /* RW */
#define MSDC_PAD_TUNE0_DATRRDLYSEL      (0x1  << 13)     /* RW */
#define MSDC_PAD_TUNE0_RXDLYSEL         (0x1  << 15)     /* RW */
#define MSDC_PAD_TUNE0_CMDRDLY          (0x1F << 16)     /* RW */
#define MSDC_PAD_TUNE0_CMDRRDLYSEL      (0x1  << 21)     /* RW */
#define MSDC_PAD_TUNE0_CMDRRDLY         (0x1FUL << 22)   /* RW */
#define MSDC_PAD_TUNE0_CLKTXDLY         (0x1FUL << 27)   /* RW */

/* MSDC_PAD_TUNE1 mask */
#define MSDC_PAD_TUNE1_DATRRDLY2        (0x1F <<  8)     /* RW */
#define MSDC_PAD_TUNE1_DATRRDLY2SEL     (0x1  << 13)     /* RW */
#define MSDC_PAD_TUNE1_CMDRDLY2         (0x1F << 16)     /* RW */
#define MSDC_PAD_TUNE1_CMDRRDLY2SEL     (0x1  << 21)     /* RW */

/* MSDC_DAT_RDDLY0/1/2/3 mask */
#define MSDC_DAT_RDDLY0_D3              (0x1F << 0)     /* RW */
#define MSDC_DAT_RDDLY0_D2              (0x1F << 8)     /* RW */
#define MSDC_DAT_RDDLY0_D1              (0x1F << 16)    /* RW */
#define MSDC_DAT_RDDLY0_D0              (0x1FUL << 24)  /* RW */

#define MSDC_DAT_RDDLY1_D7              (0x1F << 0)     /* RW */
#define MSDC_DAT_RDDLY1_D6              (0x1F << 8)     /* RW */
#define MSDC_DAT_RDDLY1_D5              (0x1F << 16)    /* RW */
#define MSDC_DAT_RDDLY1_D4              (0x1FUL << 24)  /* RW */

#define MSDC_DAT_RDDLY2_D3              (0x1F << 0)     /* RW */
#define MSDC_DAT_RDDLY2_D2              (0x1F << 8)     /* RW */
#define MSDC_DAT_RDDLY2_D1              (0x1F << 16)    /* RW */
#define MSDC_DAT_RDDLY2_D0              (0x1FUL << 24)  /* RW */

#define MSDC_DAT_RDDLY3_D7              (0x1F << 0)     /* RW */
#define MSDC_DAT_RDDLY3_D6              (0x1F << 8)     /* RW */
#define MSDC_DAT_RDDLY3_D5              (0x1F << 16)    /* RW */
#define MSDC_DAT_RDDLY3_D4              (0x1FUL << 24)  /* RW */

/* MSDC_HW_DBG_SEL mask */
#define MSDC_HW_DBG0_SEL                (0xFF << 0)
#define MSDC_HW_DBG1_SEL                (0x3F << 8)
#define MSDC_HW_DBG2_SEL                (0xFF << 16)
#define MSDC_HW_DBG3_SEL                (0x3F << 24)
#define MSDC_HW_DBG_WRAPTYPE_SEL        (0x1  << 30)


#define MSDC_PAD_TUNE_DATWRDLY	  (0x1f <<  0)	/* RW */
#define MSDC_PAD_TUNE_DATRRDLY	  (0x1f <<  8)	/* RW */
#define MSDC_PAD_TUNE_CMDRDLY	  (0x1f << 16)  /* RW */
#define MSDC_PAD_TUNE_CMDRRDLY	  (0x1f << 22)	/* RW */
#define MSDC_PAD_TUNE_CLKTDLY	  (0x1f << 27)  /* RW */
#define MSDC_PAD_TUNE_RXDLYSEL	  (0x1 << 15)   /* RW */
#define MSDC_PAD_TUNE_RD_SEL	  (0x1 << 13)   /* RW */
#define MSDC_PAD_TUNE_CMD_SEL	  (0x1 << 21)   /* RW */

#define PAD_DS_TUNE_DLY1	  (0x1f << 2)   /* RW */
#define PAD_DS_TUNE_DLY2	  (0x1f << 7)   /* RW */
#define PAD_DS_TUNE_DLY3	  (0x1f << 12)  /* RW */

#define PAD_CMD_TUNE_RX_DLY3	  (0x1f << 1)  /* RW */

#define EMMC50_CFG_PADCMD_LATCHCK (0x1 << 0)   /* RW */
#define EMMC50_CFG_CRCSTS_EDGE    (0x1 << 3)   /* RW */
#define EMMC50_CFG_CFCSTS_SEL     (0x1 << 4)   /* RW */

#define EMMC50_CFG3_OUTS_WR       (0x1f << 0)  /* RW */

#define SDC_FIFO_CFG_WRVALIDSEL   (0x1 << 24)  /* RW */
#define SDC_FIFO_CFG_RDVALIDSEL   (0x1 << 25)  /* RW */

/* SD_TOP_CONTROL mask */
#define PAD_RXDLY_SEL           (0x1 << 0)      /* RW */
#define DELAY_EN                (0x1 << 1)      /* RW */
#define PAD_DAT_RD_RXDLY2       (0x1F << 2)     /* RW */
#define PAD_DAT_RD_RXDLY        (0x1F << 7)     /* RW */
#define PAD_DAT_RD_RXDLY2_SEL   (0x1 << 12)     /* RW */
#define PAD_DAT_RD_RXDLY_SEL    (0x1 << 13)     /* RW */
#define DATA_K_VALUE_SEL        (0x1 << 14)     /* RW */
#define SDC_RX_ENH_EN           (0x1 << 15)     /* TW */

/* SD_TOP_CMD mask */
#define PAD_CMD_RXDLY2          (0x1F << 0)     /* RW */
#define PAD_CMD_RXDLY           (0x1F << 5)     /* RW */
#define PAD_CMD_RD_RXDLY2_SEL   (0x1 << 10)     /* RW */
#define PAD_CMD_RD_RXDLY_SEL    (0x1 << 11)     /* RW */
#define PAD_CMD_TX_DLY          (0x1F << 12)    /* RW */
/* TOP_SD50_PAD_CTL0 mask */
#define MSDC_PAD_CLK_TXDLY      (0x1F << 10)    /* RW */
/* TOP_SD50_PAD_DS_TUNE mask */
#define PAD_DS_DLY3             (0x1F << 0)     /* RW */
#define PAD_DS_DLY2             (0x1F << 5)     /* RW */
#define PAD_DS_DLY1             (0x1F << 10)    /* RW */
#define PAD_DS_DLY2_SEL         (0x1 << 15)     /* RW */
#define PAD_DS_DLY_SEL          (0x1 << 16)     /* RW */

#define REQ_CMD_EIO  (0x1 << 0)
#define REQ_CMD_TMO  (0x1 << 1)
#define REQ_DAT_ERR  (0x1 << 2)
#define REQ_STOP_EIO (0x1 << 3)
#define REQ_STOP_TMO (0x1 << 4)
#define REQ_CMD_BUSY (0x1 << 5)

#define MSDC_PREPARE_FLAG (0x1 << 0)
#define MSDC_ASYNC_FLAG (0x1 << 1)
#define MSDC_MMAP_FLAG (0x1 << 2)

#define MTK_MMC_AUTOSUSPEND_DELAY	50
#define CMD_TIMEOUT         (HZ/10 * 5)	/* 100ms x5 */
#define DAT_TIMEOUT         (HZ    * 5)	/* 1000ms x5 */

#define PAD_DELAY_MAX	32 /* PAD delay cells */

/* SDIO3.0 PLUS mask */
#define SDIO_CCCR_MTK_DDR208	0xF2
#define SDIO_MTK_DDR208		0x3
#define SDIO_MTK_DDR208_SUPPORT	0x2

/*--------------------------------------------------------------------------*/
/* Descriptor Structure                                                     */
/*--------------------------------------------------------------------------*/
struct mt_gpdma_desc {
	u32 gpd_info;
#define GPDMA_DESC_HWO		(0x1 << 0)
#define GPDMA_DESC_BDP		(0x1 << 1)
#define GPDMA_DESC_CHECKSUM	(0xff << 8) /* bit8 ~ bit15 */
#define GPDMA_DESC_INT		(0x1 << 16)
#define GPDMA_DESC_NEXT_H4	(0xf << 24)
#define GPDMA_DESC_PTR_H4	(0xf << 28)
	u32 next;
	u32 ptr;
	u32 gpd_data_len;
#define GPDMA_DESC_BUFLEN	(0xffff) /* bit0 ~ bit15 */
#define GPDMA_DESC_EXTLEN	(0xff << 16) /* bit16 ~ bit23 */
	u32 arg;
	u32 blknum;
	u32 cmd;
};

struct mt_bdma_desc {
	u32 bd_info;
#define BDMA_DESC_EOL		(0x1 << 0)
#define BDMA_DESC_CHECKSUM	(0xff << 8) /* bit8 ~ bit15 */
#define BDMA_DESC_BLKPAD	(0x1 << 17)
#define BDMA_DESC_DWPAD		(0x1 << 18)
#define BDMA_DESC_NEXT_H4	(0xf << 24)
#define BDMA_DESC_PTR_H4	(0xf << 28)
	u32 next;
	u32 ptr;
	u32 bd_data_len;
#define BDMA_DESC_BUFLEN	(0xffff) /* bit0 ~ bit15 */
};

struct msdc_dma {
	struct scatterlist *sg;	/* I/O scatter list */
	struct mt_gpdma_desc *gpd;		/* pointer to gpd array */
	struct mt_bdma_desc *bd;		/* pointer to bd array */
	dma_addr_t gpd_addr;	/* the physical address of gpd array */
	dma_addr_t bd_addr;	/* the physical address of bd array */
};

struct msdc_save_para {
	u32 msdc_cfg;
	u32 msdc_inten;
	u32 iocon;
	u32 sdc_cfg;
	u32 pad_tune;
	u32 patch_bit0;
	u32 patch_bit1;
	u32 patch_bit2;
	u32 pad_ds_tune;
	u32 pad_cmd_tune;
	u32 emmc50_cfg0;
	u32 emmc50_cfg3;
	u32 sdc_fifo_cfg;
	u32 sd_top_control;
	u32 sd_top_cmd;
};

struct mtk_mmc_compatible {
	u8 clk_div_bits;
	bool hs400_tune; /* only used for MT8173 */
	u32 pad_tune_reg;
	bool async_fifo;
	bool data_tune;
	bool busy_check;
	bool stop_clk_fix;
	bool enhance_rx;
	bool support_64g;
	bool tune_resp_data_together;
	bool v3_plus;
};

struct msdc_tune_para {
	u32 iocon;
	u32 pad_tune;
	u32 pad_cmd_tune;
	u32 sd_top_control;
	u32 sd_top_cmd;
};

struct msdc_delay_phase {
	u8 maxlen;
	u8 start;
	u8 final_phase;
};

struct msdc_host {
	struct device *dev;
	const struct mtk_mmc_compatible *dev_comp;
	struct mmc_host *mmc;	/* mmc structure */
	int cmd_rsp;

	spinlock_t lock;
	struct mmc_request *mrq;
	struct mmc_command *cmd;
	struct mmc_data *data;
	int error;

	void __iomem *base;		/* host base address */
	void __iomem *top_base;		/* host top register base address */

	struct msdc_dma dma;	/* dma channel */
	u64 dma_mask;

	u32 timeout_ns;		/* data timeout ns */
	u32 timeout_clks;	/* data timeout clks */

	struct pinctrl *pinctrl;
	struct pinctrl_state *pins_default;
	struct pinctrl_state *pins_uhs;
	struct pinctrl_state *pins_eint;
	struct pinctrl_state *pins_dat1;
	struct delayed_work req_timeout;
	int irq;		/* host interrupt */
	int eint_irq;	/* device interrupt */
	int sdio_irq_cnt; /* irq enable cnt */

	struct clk *ext_clk;	/* msdc0 AP clock */
	struct clk *bus_clk;	/* msdc bus clock */
	struct clk *src_clk;	/* msdc source clock */
	struct clk *h_clk;      /* msdc h_clk */
	struct clk *src_clk_cg; /* msdc source clock control gate */
	u32 mclk;		/* mmc subsystem clock frequency */
	u32 src_clk_freq;	/* source clock frequency */
	u32 sclk;		/* SD/MS bus clock frequency */
	unsigned char timing;
	bool vqmmc_enabled;
	u32 latch_ck;
	u32 hs400_ds_delay;
	u32 hs200_cmd_int_delay; /* cmd internal delay for HS200/SDR104 */
	u32 hs400_cmd_int_delay; /* cmd internal delay for HS400 */
	bool hs400_cmd_resp_sel_rising;
				 /* cmd response sample selection for HS400 */
	bool hs400_mode;	/* current eMMC will run at hs400 mode */
	bool is_ddr208;
	struct msdc_save_para save_para; /* used when gate HCLK */
	struct msdc_tune_para def_tune_para; /* default tune setting */
	struct msdc_tune_para saved_tune_para; /* tune result of CMD21/CMD19 */
#ifdef CONFIG_PM_DEVFREQ
	struct pm_qos_request pm_qos;
#endif
};

static const struct mtk_mmc_compatible mt8135_compat = {
	.clk_div_bits = 8,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE,
	.async_fifo = false,
	.data_tune = false,
	.busy_check = false,
	.stop_clk_fix = false,
	.enhance_rx = false,
	.support_64g = false,
	.tune_resp_data_together = false,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt8173_compat = {
	.clk_div_bits = 8,
	.hs400_tune = true,
	.pad_tune_reg = MSDC_PAD_TUNE,
	.async_fifo = false,
	.data_tune = false,
	.busy_check = false,
	.stop_clk_fix = false,
	.enhance_rx = false,
	.support_64g = false,
	.tune_resp_data_together = false,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt8167_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = false,
	.support_64g = false,
	.tune_resp_data_together = true,
	.v3_plus = false,
};

static const struct mtk_mmc_compatible mt8168_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = true,
	.tune_resp_data_together = true,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt2701_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = false,
	.stop_clk_fix = false,
	.enhance_rx = false,
	.support_64g = false,
	.tune_resp_data_together = false,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt2712_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = true,
	.tune_resp_data_together = true,
	.v3_plus = false,
};

static const struct mtk_mmc_compatible mt8695_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = false,
	.tune_resp_data_together = true,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt8512_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = false,
	.tune_resp_data_together = true,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt8518_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = false,
	.tune_resp_data_together = true,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt7622_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = false,
	.tune_resp_data_together = false,
	.v3_plus = true,
};

static const struct mtk_mmc_compatible mt8183_compat = {
	.clk_div_bits = 12,
	.hs400_tune = false,
	.pad_tune_reg = MSDC_PAD_TUNE0,
	.async_fifo = true,
	.data_tune = true,
	.busy_check = true,
	.stop_clk_fix = true,
	.enhance_rx = true,
	.support_64g = true,
	.tune_resp_data_together = true,
	.v3_plus = true,
};