270 lines
8.6 KiB
C
270 lines
8.6 KiB
C
/*
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* Synopsys DesignWare Multimedia Card Interface driver
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* (Based on NXP driver for lpc 31xx)
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*
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* Copyright (C) 2009 NXP Semiconductors
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* Copyright (C) 2009, 2010 Imagination Technologies Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _DW_MMC_H_
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#define _DW_MMC_H_
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#define DW_MMC_240A 0x240a
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#define SDMMC_CTRL 0x000
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#define SDMMC_PWREN 0x004
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#define SDMMC_CLKDIV 0x008
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#define SDMMC_CLKSRC 0x00c
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#define SDMMC_CLKENA 0x010
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#define SDMMC_TMOUT 0x014
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#define SDMMC_CTYPE 0x018
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#define SDMMC_BLKSIZ 0x01c
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#define SDMMC_BYTCNT 0x020
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#define SDMMC_INTMASK 0x024
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#define SDMMC_CMDARG 0x028
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#define SDMMC_CMD 0x02c
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#define SDMMC_RESP0 0x030
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#define SDMMC_RESP1 0x034
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#define SDMMC_RESP2 0x038
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#define SDMMC_RESP3 0x03c
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#define SDMMC_MINTSTS 0x040
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#define SDMMC_RINTSTS 0x044
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#define SDMMC_STATUS 0x048
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#define SDMMC_FIFOTH 0x04c
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#define SDMMC_CDETECT 0x050
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#define SDMMC_WRTPRT 0x054
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#define SDMMC_GPIO 0x058
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#define SDMMC_TCBCNT 0x05c
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#define SDMMC_TBBCNT 0x060
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#define SDMMC_DEBNCE 0x064
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#define SDMMC_USRID 0x068
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#define SDMMC_VERID 0x06c
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#define SDMMC_HCON 0x070
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#define SDMMC_UHS_REG 0x074
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#define SDMMC_BMOD 0x080
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#define SDMMC_PLDMND 0x084
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#define SDMMC_DBADDR 0x088
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#define SDMMC_IDSTS 0x08c
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#define SDMMC_IDINTEN 0x090
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#define SDMMC_DSCADDR 0x094
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#define SDMMC_BUFADDR 0x098
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#define SDMMC_CDTHRCTL 0x100
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#define SDMMC_DATA(x) (x)
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/*
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* Data offset is difference according to Version
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* Lower than 2.40a : data register offest is 0x100
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*/
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#define DATA_OFFSET 0x100
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#define DATA_240A_OFFSET 0x200
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/* shift bit field */
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#define _SBF(f, v) ((v) << (f))
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/* Control register defines */
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#define SDMMC_CTRL_USE_IDMAC BIT(25)
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#define SDMMC_CTRL_CEATA_INT_EN BIT(11)
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#define SDMMC_CTRL_SEND_AS_CCSD BIT(10)
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#define SDMMC_CTRL_SEND_CCSD BIT(9)
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#define SDMMC_CTRL_ABRT_READ_DATA BIT(8)
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#define SDMMC_CTRL_SEND_IRQ_RESP BIT(7)
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#define SDMMC_CTRL_READ_WAIT BIT(6)
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#define SDMMC_CTRL_DMA_ENABLE BIT(5)
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#define SDMMC_CTRL_INT_ENABLE BIT(4)
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#define SDMMC_CTRL_DMA_RESET BIT(2)
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#define SDMMC_CTRL_FIFO_RESET BIT(1)
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#define SDMMC_CTRL_RESET BIT(0)
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/* Clock Enable register defines */
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#define SDMMC_CLKEN_LOW_PWR BIT(16)
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#define SDMMC_CLKEN_ENABLE BIT(0)
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/* time-out register defines */
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#define SDMMC_TMOUT_DATA(n) _SBF(8, (n))
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#define SDMMC_TMOUT_DATA_MSK 0xFFFFFF00
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#define SDMMC_TMOUT_RESP(n) ((n) & 0xFF)
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#define SDMMC_TMOUT_RESP_MSK 0xFF
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/* card-type register defines */
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#define SDMMC_CTYPE_8BIT BIT(16)
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#define SDMMC_CTYPE_4BIT BIT(0)
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#define SDMMC_CTYPE_1BIT 0
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/* Interrupt status & mask register defines */
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#define SDMMC_INT_SDIO(n) BIT(16 + (n))
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#define SDMMC_INT_EBE BIT(15)
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#define SDMMC_INT_ACD BIT(14)
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#define SDMMC_INT_SBE BIT(13)
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#define SDMMC_INT_HLE BIT(12)
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#define SDMMC_INT_FRUN BIT(11)
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#define SDMMC_INT_HTO BIT(10)
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#define SDMMC_INT_VOLT_SWITCH BIT(10) /* overloads bit 10! */
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#define SDMMC_INT_DRTO BIT(9)
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#define SDMMC_INT_RTO BIT(8)
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#define SDMMC_INT_DCRC BIT(7)
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#define SDMMC_INT_RCRC BIT(6)
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#define SDMMC_INT_RXDR BIT(5)
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#define SDMMC_INT_TXDR BIT(4)
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#define SDMMC_INT_DATA_OVER BIT(3)
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#define SDMMC_INT_CMD_DONE BIT(2)
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#define SDMMC_INT_RESP_ERR BIT(1)
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#define SDMMC_INT_CD BIT(0)
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#define SDMMC_INT_ERROR 0xbfc2
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/* Command register defines */
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#define SDMMC_CMD_START BIT(31)
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#define SDMMC_CMD_USE_HOLD_REG BIT(29)
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#define SDMMC_CMD_VOLT_SWITCH BIT(28)
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#define SDMMC_CMD_CCS_EXP BIT(23)
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#define SDMMC_CMD_CEATA_RD BIT(22)
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#define SDMMC_CMD_UPD_CLK BIT(21)
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#define SDMMC_CMD_INIT BIT(15)
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#define SDMMC_CMD_STOP BIT(14)
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#define SDMMC_CMD_PRV_DAT_WAIT BIT(13)
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#define SDMMC_CMD_SEND_STOP BIT(12)
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#define SDMMC_CMD_STRM_MODE BIT(11)
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#define SDMMC_CMD_DAT_WR BIT(10)
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#define SDMMC_CMD_DAT_EXP BIT(9)
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#define SDMMC_CMD_RESP_CRC BIT(8)
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#define SDMMC_CMD_RESP_LONG BIT(7)
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#define SDMMC_CMD_RESP_EXP BIT(6)
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#define SDMMC_CMD_INDX(n) ((n) & 0x1F)
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/* Status register defines */
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#define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF)
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#define SDMMC_STATUS_DMA_REQ BIT(31)
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#define SDMMC_STATUS_BUSY BIT(9)
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/* FIFOTH register defines */
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#define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 | \
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((r) & 0xFFF) << 16 | \
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((t) & 0xFFF))
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/* Internal DMAC interrupt defines */
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#define SDMMC_IDMAC_INT_AI BIT(9)
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#define SDMMC_IDMAC_INT_NI BIT(8)
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#define SDMMC_IDMAC_INT_CES BIT(5)
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#define SDMMC_IDMAC_INT_DU BIT(4)
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#define SDMMC_IDMAC_INT_FBE BIT(2)
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#define SDMMC_IDMAC_INT_RI BIT(1)
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#define SDMMC_IDMAC_INT_TI BIT(0)
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/* Internal DMAC bus mode bits */
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#define SDMMC_IDMAC_ENABLE BIT(7)
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#define SDMMC_IDMAC_FB BIT(1)
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#define SDMMC_IDMAC_SWRESET BIT(0)
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/* Version ID register define */
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#define SDMMC_GET_VERID(x) ((x) & 0xFFFF)
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/* Card read threshold */
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#define SDMMC_SET_RD_THLD(v, x) (((v) & 0x1FFF) << 16 | (x))
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#define SDMMC_UHS_18V BIT(0)
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/* All ctrl reset bits */
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#define SDMMC_CTRL_ALL_RESET_FLAGS \
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(SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET)
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/* Register access macros */
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#define mci_readl(dev, reg) \
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__raw_readl((dev)->regs + SDMMC_##reg)
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#define mci_writel(dev, reg, value) \
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__raw_writel((value), (dev)->regs + SDMMC_##reg)
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/* 16-bit FIFO access macros */
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#define mci_readw(dev, reg) \
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__raw_readw((dev)->regs + SDMMC_##reg)
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#define mci_writew(dev, reg, value) \
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__raw_writew((value), (dev)->regs + SDMMC_##reg)
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/* 64-bit FIFO access macros */
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#ifdef readq
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#define mci_readq(dev, reg) \
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__raw_readq((dev)->regs + SDMMC_##reg)
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#define mci_writeq(dev, reg, value) \
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__raw_writeq((value), (dev)->regs + SDMMC_##reg)
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#else
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/*
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* Dummy readq implementation for architectures that don't define it.
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*
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* We would assume that none of these architectures would configure
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* the IP block with a 64bit FIFO width, so this code will never be
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* executed on those machines. Defining these macros here keeps the
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* rest of the code free from ifdefs.
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*/
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#define mci_readq(dev, reg) \
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(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg))
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#define mci_writeq(dev, reg, value) \
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(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value))
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#endif
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extern int dw_mci_probe(struct dw_mci *host);
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extern void dw_mci_remove(struct dw_mci *host);
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#ifdef CONFIG_PM_SLEEP
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extern int dw_mci_suspend(struct dw_mci *host);
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extern int dw_mci_resume(struct dw_mci *host);
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#endif
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/**
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* struct dw_mci_slot - MMC slot state
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* @mmc: The mmc_host representing this slot.
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* @host: The MMC controller this slot is using.
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* @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX)
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* @ctype: Card type for this slot.
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* @mrq: mmc_request currently being processed or waiting to be
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* processed, or NULL when the slot is idle.
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* @queue_node: List node for placing this node in the @queue list of
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* &struct dw_mci.
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* @clock: Clock rate configured by set_ios(). Protected by host->lock.
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* @__clk_old: The last updated clock with reflecting clock divider.
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* Keeping track of this helps us to avoid spamming the console
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* with CONFIG_MMC_CLKGATE.
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* @flags: Random state bits associated with the slot.
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* @id: Number of this slot.
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* @last_detect_state: Most recently observed card detect state.
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*/
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struct dw_mci_slot {
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struct mmc_host *mmc;
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struct dw_mci *host;
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int quirks;
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u32 ctype;
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struct mmc_request *mrq;
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struct list_head queue_node;
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unsigned int clock;
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unsigned int __clk_old;
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unsigned long flags;
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#define DW_MMC_CARD_PRESENT 0
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#define DW_MMC_CARD_NEED_INIT 1
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int id;
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int last_detect_state;
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};
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struct dw_mci_tuning_data {
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const u8 *blk_pattern;
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unsigned int blksz;
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};
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/**
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* dw_mci driver data - dw-mshc implementation specific driver data.
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* @caps: mmc subsystem specified capabilities of the controller(s).
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* @init: early implementation specific initialization.
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* @setup_clock: implementation specific clock configuration.
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* @prepare_command: handle CMD register extensions.
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* @set_ios: handle bus specific extensions.
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* @parse_dt: parse implementation specific device tree properties.
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* @execute_tuning: implementation specific tuning procedure.
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*
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* Provide controller implementation specific extensions. The usage of this
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* data structure is fully optional and usage of each member in this structure
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* is optional as well.
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*/
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struct dw_mci_drv_data {
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unsigned long *caps;
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int (*init)(struct dw_mci *host);
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int (*setup_clock)(struct dw_mci *host);
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void (*prepare_command)(struct dw_mci *host, u32 *cmdr);
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void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
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int (*parse_dt)(struct dw_mci *host);
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int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode,
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struct dw_mci_tuning_data *tuning_data);
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};
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#endif /* _DW_MMC_H_ */
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