303 lines
9.9 KiB
C
303 lines
9.9 KiB
C
/*
|
|
* Synopsys DesignWare Multimedia Card Interface driver
|
|
* (Based on NXP driver for lpc 31xx)
|
|
*
|
|
* Copyright (C) 2009 NXP Semiconductors
|
|
* Copyright (C) 2009, 2010 Imagination Technologies Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _DW_MMC_H_
|
|
#define _DW_MMC_H_
|
|
|
|
#define DW_MMC_240A 0x240a
|
|
#define DW_MMC_280A 0x280a
|
|
|
|
#define SDMMC_CTRL 0x000
|
|
#define SDMMC_PWREN 0x004
|
|
#define SDMMC_CLKDIV 0x008
|
|
#define SDMMC_CLKSRC 0x00c
|
|
#define SDMMC_CLKENA 0x010
|
|
#define SDMMC_TMOUT 0x014
|
|
#define SDMMC_CTYPE 0x018
|
|
#define SDMMC_BLKSIZ 0x01c
|
|
#define SDMMC_BYTCNT 0x020
|
|
#define SDMMC_INTMASK 0x024
|
|
#define SDMMC_CMDARG 0x028
|
|
#define SDMMC_CMD 0x02c
|
|
#define SDMMC_RESP0 0x030
|
|
#define SDMMC_RESP1 0x034
|
|
#define SDMMC_RESP2 0x038
|
|
#define SDMMC_RESP3 0x03c
|
|
#define SDMMC_MINTSTS 0x040
|
|
#define SDMMC_RINTSTS 0x044
|
|
#define SDMMC_STATUS 0x048
|
|
#define SDMMC_FIFOTH 0x04c
|
|
#define SDMMC_CDETECT 0x050
|
|
#define SDMMC_WRTPRT 0x054
|
|
#define SDMMC_GPIO 0x058
|
|
#define SDMMC_TCBCNT 0x05c
|
|
#define SDMMC_TBBCNT 0x060
|
|
#define SDMMC_DEBNCE 0x064
|
|
#define SDMMC_USRID 0x068
|
|
#define SDMMC_VERID 0x06c
|
|
#define SDMMC_HCON 0x070
|
|
#define SDMMC_UHS_REG 0x074
|
|
#define SDMMC_RST_N 0x078
|
|
#define SDMMC_BMOD 0x080
|
|
#define SDMMC_PLDMND 0x084
|
|
#define SDMMC_DBADDR 0x088
|
|
#define SDMMC_IDSTS 0x08c
|
|
#define SDMMC_IDINTEN 0x090
|
|
#define SDMMC_DSCADDR 0x094
|
|
#define SDMMC_BUFADDR 0x098
|
|
#define SDMMC_CDTHRCTL 0x100
|
|
#define SDMMC_DATA(x) (x)
|
|
/*
|
|
* Registers to support idmac 64-bit address mode
|
|
*/
|
|
#define SDMMC_DBADDRL 0x088
|
|
#define SDMMC_DBADDRU 0x08c
|
|
#define SDMMC_IDSTS64 0x090
|
|
#define SDMMC_IDINTEN64 0x094
|
|
#define SDMMC_DSCADDRL 0x098
|
|
#define SDMMC_DSCADDRU 0x09c
|
|
#define SDMMC_BUFADDRL 0x0A0
|
|
#define SDMMC_BUFADDRU 0x0A4
|
|
|
|
/*
|
|
* Data offset is difference according to Version
|
|
* Lower than 2.40a : data register offest is 0x100
|
|
*/
|
|
#define DATA_OFFSET 0x100
|
|
#define DATA_240A_OFFSET 0x200
|
|
|
|
/* shift bit field */
|
|
#define _SBF(f, v) ((v) << (f))
|
|
|
|
/* Control register defines */
|
|
#define SDMMC_CTRL_USE_IDMAC BIT(25)
|
|
#define SDMMC_CTRL_CEATA_INT_EN BIT(11)
|
|
#define SDMMC_CTRL_SEND_AS_CCSD BIT(10)
|
|
#define SDMMC_CTRL_SEND_CCSD BIT(9)
|
|
#define SDMMC_CTRL_ABRT_READ_DATA BIT(8)
|
|
#define SDMMC_CTRL_SEND_IRQ_RESP BIT(7)
|
|
#define SDMMC_CTRL_READ_WAIT BIT(6)
|
|
#define SDMMC_CTRL_DMA_ENABLE BIT(5)
|
|
#define SDMMC_CTRL_INT_ENABLE BIT(4)
|
|
#define SDMMC_CTRL_DMA_RESET BIT(2)
|
|
#define SDMMC_CTRL_FIFO_RESET BIT(1)
|
|
#define SDMMC_CTRL_RESET BIT(0)
|
|
/* Clock Enable register defines */
|
|
#define SDMMC_CLKEN_LOW_PWR BIT(16)
|
|
#define SDMMC_CLKEN_ENABLE BIT(0)
|
|
/* time-out register defines */
|
|
#define SDMMC_TMOUT_DATA(n) _SBF(8, (n))
|
|
#define SDMMC_TMOUT_DATA_MSK 0xFFFFFF00
|
|
#define SDMMC_TMOUT_RESP(n) ((n) & 0xFF)
|
|
#define SDMMC_TMOUT_RESP_MSK 0xFF
|
|
/* card-type register defines */
|
|
#define SDMMC_CTYPE_8BIT BIT(16)
|
|
#define SDMMC_CTYPE_4BIT BIT(0)
|
|
#define SDMMC_CTYPE_1BIT 0
|
|
/* Interrupt status & mask register defines */
|
|
#define SDMMC_INT_SDIO(n) BIT(16 + (n))
|
|
#define SDMMC_INT_EBE BIT(15)
|
|
#define SDMMC_INT_ACD BIT(14)
|
|
#define SDMMC_INT_SBE BIT(13)
|
|
#define SDMMC_INT_HLE BIT(12)
|
|
#define SDMMC_INT_FRUN BIT(11)
|
|
#define SDMMC_INT_HTO BIT(10)
|
|
#define SDMMC_INT_VOLT_SWITCH BIT(10) /* overloads bit 10! */
|
|
#define SDMMC_INT_DRTO BIT(9)
|
|
#define SDMMC_INT_RTO BIT(8)
|
|
#define SDMMC_INT_DCRC BIT(7)
|
|
#define SDMMC_INT_RCRC BIT(6)
|
|
#define SDMMC_INT_RXDR BIT(5)
|
|
#define SDMMC_INT_TXDR BIT(4)
|
|
#define SDMMC_INT_DATA_OVER BIT(3)
|
|
#define SDMMC_INT_CMD_DONE BIT(2)
|
|
#define SDMMC_INT_RESP_ERR BIT(1)
|
|
#define SDMMC_INT_CD BIT(0)
|
|
#define SDMMC_INT_ERROR 0xbfc2
|
|
/* Command register defines */
|
|
#define SDMMC_CMD_START BIT(31)
|
|
#define SDMMC_CMD_USE_HOLD_REG BIT(29)
|
|
#define SDMMC_CMD_VOLT_SWITCH BIT(28)
|
|
#define SDMMC_CMD_CCS_EXP BIT(23)
|
|
#define SDMMC_CMD_CEATA_RD BIT(22)
|
|
#define SDMMC_CMD_UPD_CLK BIT(21)
|
|
#define SDMMC_CMD_INIT BIT(15)
|
|
#define SDMMC_CMD_STOP BIT(14)
|
|
#define SDMMC_CMD_PRV_DAT_WAIT BIT(13)
|
|
#define SDMMC_CMD_SEND_STOP BIT(12)
|
|
#define SDMMC_CMD_STRM_MODE BIT(11)
|
|
#define SDMMC_CMD_DAT_WR BIT(10)
|
|
#define SDMMC_CMD_DAT_EXP BIT(9)
|
|
#define SDMMC_CMD_RESP_CRC BIT(8)
|
|
#define SDMMC_CMD_RESP_LONG BIT(7)
|
|
#define SDMMC_CMD_RESP_EXP BIT(6)
|
|
#define SDMMC_CMD_INDX(n) ((n) & 0x1F)
|
|
/* Status register defines */
|
|
#define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF)
|
|
#define SDMMC_STATUS_DMA_REQ BIT(31)
|
|
#define SDMMC_STATUS_BUSY BIT(9)
|
|
/* FIFOTH register defines */
|
|
#define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 | \
|
|
((r) & 0xFFF) << 16 | \
|
|
((t) & 0xFFF))
|
|
/* HCON register defines */
|
|
#define DMA_INTERFACE_IDMA (0x0)
|
|
#define DMA_INTERFACE_DWDMA (0x1)
|
|
#define DMA_INTERFACE_GDMA (0x2)
|
|
#define DMA_INTERFACE_NODMA (0x3)
|
|
#define SDMMC_GET_TRANS_MODE(x) (((x)>>16) & 0x3)
|
|
#define SDMMC_GET_SLOT_NUM(x) ((((x)>>1) & 0x1F) + 1)
|
|
#define SDMMC_GET_HDATA_WIDTH(x) (((x)>>7) & 0x7)
|
|
#define SDMMC_GET_ADDR_CONFIG(x) (((x)>>27) & 0x1)
|
|
/* Internal DMAC interrupt defines */
|
|
#define SDMMC_IDMAC_INT_AI BIT(9)
|
|
#define SDMMC_IDMAC_INT_NI BIT(8)
|
|
#define SDMMC_IDMAC_INT_CES BIT(5)
|
|
#define SDMMC_IDMAC_INT_DU BIT(4)
|
|
#define SDMMC_IDMAC_INT_FBE BIT(2)
|
|
#define SDMMC_IDMAC_INT_RI BIT(1)
|
|
#define SDMMC_IDMAC_INT_TI BIT(0)
|
|
/* Internal DMAC bus mode bits */
|
|
#define SDMMC_IDMAC_ENABLE BIT(7)
|
|
#define SDMMC_IDMAC_FB BIT(1)
|
|
#define SDMMC_IDMAC_SWRESET BIT(0)
|
|
/* H/W reset */
|
|
#define SDMMC_RST_HWACTIVE 0x1
|
|
/* Version ID register define */
|
|
#define SDMMC_GET_VERID(x) ((x) & 0xFFFF)
|
|
/* Card read threshold */
|
|
#define SDMMC_SET_THLD(v, x) (((v) & 0xFFF) << 16 | (x))
|
|
#define SDMMC_CARD_WR_THR_EN BIT(2)
|
|
#define SDMMC_CARD_RD_THR_EN BIT(0)
|
|
/* UHS-1 register defines */
|
|
#define SDMMC_UHS_18V BIT(0)
|
|
/* All ctrl reset bits */
|
|
#define SDMMC_CTRL_ALL_RESET_FLAGS \
|
|
(SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET)
|
|
|
|
/* FIFO register access macros. These should not change the data endian-ness
|
|
* as they are written to memory to be dealt with by the upper layers */
|
|
#define mci_fifo_readw(__reg) __raw_readw(__reg)
|
|
#define mci_fifo_readl(__reg) __raw_readl(__reg)
|
|
#define mci_fifo_readq(__reg) __raw_readq(__reg)
|
|
|
|
#define mci_fifo_writew(__value, __reg) __raw_writew(__reg, __value)
|
|
#define mci_fifo_writel(__value, __reg) __raw_writel(__reg, __value)
|
|
#define mci_fifo_writeq(__value, __reg) __raw_writeq(__reg, __value)
|
|
|
|
/* Register access macros */
|
|
#define mci_readl(dev, reg) \
|
|
readl_relaxed((dev)->regs + SDMMC_##reg)
|
|
#define mci_writel(dev, reg, value) \
|
|
writel_relaxed((value), (dev)->regs + SDMMC_##reg)
|
|
|
|
/* 16-bit FIFO access macros */
|
|
#define mci_readw(dev, reg) \
|
|
readw_relaxed((dev)->regs + SDMMC_##reg)
|
|
#define mci_writew(dev, reg, value) \
|
|
writew_relaxed((value), (dev)->regs + SDMMC_##reg)
|
|
|
|
/* 64-bit FIFO access macros */
|
|
#ifdef readq
|
|
#define mci_readq(dev, reg) \
|
|
readq_relaxed((dev)->regs + SDMMC_##reg)
|
|
#define mci_writeq(dev, reg, value) \
|
|
writeq_relaxed((value), (dev)->regs + SDMMC_##reg)
|
|
#else
|
|
/*
|
|
* Dummy readq implementation for architectures that don't define it.
|
|
*
|
|
* We would assume that none of these architectures would configure
|
|
* the IP block with a 64bit FIFO width, so this code will never be
|
|
* executed on those machines. Defining these macros here keeps the
|
|
* rest of the code free from ifdefs.
|
|
*/
|
|
#define mci_readq(dev, reg) \
|
|
(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg))
|
|
#define mci_writeq(dev, reg, value) \
|
|
(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value))
|
|
|
|
#define __raw_writeq(__value, __reg) \
|
|
(*(volatile u64 __force *)(__reg) = (__value))
|
|
#define __raw_readq(__reg) (*(volatile u64 __force *)(__reg))
|
|
#endif
|
|
|
|
extern int dw_mci_probe(struct dw_mci *host);
|
|
extern void dw_mci_remove(struct dw_mci *host);
|
|
#ifdef CONFIG_PM_SLEEP
|
|
extern int dw_mci_suspend(struct dw_mci *host);
|
|
extern int dw_mci_resume(struct dw_mci *host);
|
|
#endif
|
|
|
|
/**
|
|
* struct dw_mci_slot - MMC slot state
|
|
* @mmc: The mmc_host representing this slot.
|
|
* @host: The MMC controller this slot is using.
|
|
* @ctype: Card type for this slot.
|
|
* @mrq: mmc_request currently being processed or waiting to be
|
|
* processed, or NULL when the slot is idle.
|
|
* @queue_node: List node for placing this node in the @queue list of
|
|
* &struct dw_mci.
|
|
* @clock: Clock rate configured by set_ios(). Protected by host->lock.
|
|
* @__clk_old: The last clock value that was requested from core.
|
|
* Keeping track of this helps us to avoid spamming the console.
|
|
* @flags: Random state bits associated with the slot.
|
|
* @id: Number of this slot.
|
|
* @sdio_id: Number of this slot in the SDIO interrupt registers.
|
|
*/
|
|
struct dw_mci_slot {
|
|
struct mmc_host *mmc;
|
|
struct dw_mci *host;
|
|
|
|
u32 ctype;
|
|
|
|
struct mmc_request *mrq;
|
|
struct list_head queue_node;
|
|
|
|
unsigned int clock;
|
|
unsigned int __clk_old;
|
|
|
|
unsigned long flags;
|
|
#define DW_MMC_CARD_PRESENT 0
|
|
#define DW_MMC_CARD_NEED_INIT 1
|
|
#define DW_MMC_CARD_NO_LOW_PWR 2
|
|
#define DW_MMC_CARD_NO_USE_HOLD 3
|
|
int id;
|
|
int sdio_id;
|
|
};
|
|
|
|
/**
|
|
* dw_mci driver data - dw-mshc implementation specific driver data.
|
|
* @caps: mmc subsystem specified capabilities of the controller(s).
|
|
* @init: early implementation specific initialization.
|
|
* @set_ios: handle bus specific extensions.
|
|
* @parse_dt: parse implementation specific device tree properties.
|
|
* @execute_tuning: implementation specific tuning procedure.
|
|
*
|
|
* Provide controller implementation specific extensions. The usage of this
|
|
* data structure is fully optional and usage of each member in this structure
|
|
* is optional as well.
|
|
*/
|
|
struct dw_mci_drv_data {
|
|
unsigned long *caps;
|
|
int (*init)(struct dw_mci *host);
|
|
void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
|
|
int (*parse_dt)(struct dw_mci *host);
|
|
int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode);
|
|
int (*prepare_hs400_tuning)(struct dw_mci *host,
|
|
struct mmc_ios *ios);
|
|
int (*switch_voltage)(struct mmc_host *mmc,
|
|
struct mmc_ios *ios);
|
|
};
|
|
#endif /* _DW_MMC_H_ */
|