312 lines
8.7 KiB
C
312 lines
8.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2012 SAMSUNG Electronics
|
|
* Jaehoon Chung <jh80.chung@samsung.com>
|
|
*/
|
|
|
|
#ifndef __DWMMC_HW_H
|
|
#define __DWMMC_HW_H
|
|
|
|
#include <asm/cache.h>
|
|
#include <asm/io.h>
|
|
#include <mmc.h>
|
|
#include <linux/bitops.h>
|
|
|
|
#define DWMCI_CTRL 0x000
|
|
#define DWMCI_PWREN 0x004
|
|
#define DWMCI_CLKDIV 0x008
|
|
#define DWMCI_CLKSRC 0x00C
|
|
#define DWMCI_CLKENA 0x010
|
|
#define DWMCI_TMOUT 0x014
|
|
#define DWMCI_CTYPE 0x018
|
|
#define DWMCI_BLKSIZ 0x01C
|
|
#define DWMCI_BYTCNT 0x020
|
|
#define DWMCI_INTMASK 0x024
|
|
#define DWMCI_CMDARG 0x028
|
|
#define DWMCI_CMD 0x02C
|
|
#define DWMCI_RESP0 0x030
|
|
#define DWMCI_RESP1 0x034
|
|
#define DWMCI_RESP2 0x038
|
|
#define DWMCI_RESP3 0x03C
|
|
#define DWMCI_MINTSTS 0x040
|
|
#define DWMCI_RINTSTS 0x044
|
|
#define DWMCI_STATUS 0x048
|
|
#define DWMCI_FIFOTH 0x04C
|
|
#define DWMCI_CDETECT 0x050
|
|
#define DWMCI_WRTPRT 0x054
|
|
#define DWMCI_GPIO 0x058
|
|
#define DWMCI_TCMCNT 0x05C
|
|
#define DWMCI_TBBCNT 0x060
|
|
#define DWMCI_DEBNCE 0x064
|
|
#define DWMCI_USRID 0x068
|
|
#define DWMCI_VERID 0x06C
|
|
#define DWMCI_HCON 0x070
|
|
#define DWMCI_UHS_REG 0x074
|
|
#define DWMCI_BMOD 0x080
|
|
#define DWMCI_PLDMND 0x084
|
|
#define DWMCI_DBADDR 0x088
|
|
#define DWMCI_IDSTS 0x08C
|
|
#define DWMCI_IDINTEN 0x090
|
|
#define DWMCI_DSCADDR 0x094
|
|
#define DWMCI_BUFADDR 0x098
|
|
#define DWMCI_DATA 0x200
|
|
|
|
/* Interrupt Mask register */
|
|
#define DWMCI_INTMSK_ALL 0xffffffff
|
|
#define DWMCI_INTMSK_RE (1 << 1)
|
|
#define DWMCI_INTMSK_CDONE (1 << 2)
|
|
#define DWMCI_INTMSK_DTO (1 << 3)
|
|
#define DWMCI_INTMSK_TXDR (1 << 4)
|
|
#define DWMCI_INTMSK_RXDR (1 << 5)
|
|
#define DWMCI_INTMSK_RCRC (1 << 6)
|
|
#define DWMCI_INTMSK_DCRC (1 << 7)
|
|
#define DWMCI_INTMSK_RTO (1 << 8)
|
|
#define DWMCI_INTMSK_DRTO (1 << 9)
|
|
#define DWMCI_INTMSK_HTO (1 << 10)
|
|
#define DWMCI_INTMSK_FRUN (1 << 11)
|
|
#define DWMCI_INTMSK_HLE (1 << 12)
|
|
#define DWMCI_INTMSK_SBE (1 << 13)
|
|
#define DWMCI_INTMSK_ACD (1 << 14)
|
|
#define DWMCI_INTMSK_EBE (1 << 15)
|
|
|
|
/* Raw interrupt Regsiter */
|
|
#define DWMCI_DATA_ERR (DWMCI_INTMSK_EBE | DWMCI_INTMSK_SBE | DWMCI_INTMSK_HLE |\
|
|
DWMCI_INTMSK_FRUN | DWMCI_INTMSK_EBE | DWMCI_INTMSK_DCRC)
|
|
#define DWMCI_DATA_TOUT (DWMCI_INTMSK_HTO | DWMCI_INTMSK_DRTO)
|
|
/* CTRL register */
|
|
#define DWMCI_CTRL_RESET (1 << 0)
|
|
#define DWMCI_CTRL_FIFO_RESET (1 << 1)
|
|
#define DWMCI_CTRL_DMA_RESET (1 << 2)
|
|
#define DWMCI_DMA_EN (1 << 5)
|
|
#define DWMCI_CTRL_SEND_AS_CCSD (1 << 10)
|
|
#define DWMCI_IDMAC_EN (1 << 25)
|
|
#define DWMCI_RESET_ALL (DWMCI_CTRL_RESET | DWMCI_CTRL_FIFO_RESET |\
|
|
DWMCI_CTRL_DMA_RESET)
|
|
|
|
/* CMD register */
|
|
#define DWMCI_CMD_RESP_EXP (1 << 6)
|
|
#define DWMCI_CMD_RESP_LENGTH (1 << 7)
|
|
#define DWMCI_CMD_CHECK_CRC (1 << 8)
|
|
#define DWMCI_CMD_DATA_EXP (1 << 9)
|
|
#define DWMCI_CMD_RW (1 << 10)
|
|
#define DWMCI_CMD_SEND_STOP (1 << 12)
|
|
#define DWMCI_CMD_ABORT_STOP (1 << 14)
|
|
#define DWMCI_CMD_PRV_DAT_WAIT (1 << 13)
|
|
#define DWMCI_CMD_UPD_CLK (1 << 21)
|
|
#define DWMCI_CMD_USE_HOLD_REG (1 << 29)
|
|
#define DWMCI_CMD_START (1 << 31)
|
|
|
|
/* CLKENA register */
|
|
#define DWMCI_CLKEN_ENABLE (1 << 0)
|
|
#define DWMCI_CLKEN_LOW_PWR (1 << 16)
|
|
|
|
/* Card-type registe */
|
|
#define DWMCI_CTYPE_1BIT 0
|
|
#define DWMCI_CTYPE_4BIT (1 << 0)
|
|
#define DWMCI_CTYPE_8BIT (1 << 16)
|
|
|
|
/* Status Register */
|
|
#define DWMCI_FIFO_EMPTY (1 << 2)
|
|
#define DWMCI_FIFO_FULL (1 << 3)
|
|
#define DWMCI_BUSY (1 << 9)
|
|
#define DWMCI_FIFO_MASK 0x1fff
|
|
#define DWMCI_FIFO_SHIFT 17
|
|
|
|
/* FIFOTH Register */
|
|
#define MSIZE(x) ((x) << 28)
|
|
#define RX_WMARK(x) ((x) << 16)
|
|
#define TX_WMARK(x) (x)
|
|
#define RX_WMARK_SHIFT 16
|
|
#define RX_WMARK_MASK (0xfff << RX_WMARK_SHIFT)
|
|
|
|
#define DWMCI_IDMAC_OWN (1 << 31)
|
|
#define DWMCI_IDMAC_CH (1 << 4)
|
|
#define DWMCI_IDMAC_FS (1 << 3)
|
|
#define DWMCI_IDMAC_LD (1 << 2)
|
|
|
|
/* Bus Mode Register */
|
|
#define DWMCI_BMOD_IDMAC_RESET (1 << 0)
|
|
#define DWMCI_BMOD_IDMAC_FB (1 << 1)
|
|
#define DWMCI_BMOD_IDMAC_EN (1 << 7)
|
|
|
|
/* UHS register */
|
|
#define DWMCI_DDR_MODE (1 << 16)
|
|
|
|
/* Internal IDMAC interrupt defines */
|
|
#define DWMCI_IDINTEN_RI BIT(1)
|
|
#define DWMCI_IDINTEN_TI BIT(0)
|
|
|
|
#define DWMCI_IDINTEN_MASK (DWMCI_IDINTEN_TI | \
|
|
DWMCI_IDINTEN_RI)
|
|
|
|
/* quirks */
|
|
#define DWMCI_QUIRK_DISABLE_SMU (1 << 0)
|
|
|
|
/**
|
|
* struct dwmci_host - Information about a designware MMC host
|
|
*
|
|
* @name: Device name
|
|
* @ioaddr: Base I/O address of controller
|
|
* @quirks: Quick flags - see DWMCI_QUIRK_...
|
|
* @caps: Capabilities - see MMC_MODE_...
|
|
* @bus_hz: Bus speed in Hz, if @get_mmc_clk() is NULL
|
|
* @div: Arbitrary clock divider value for use by controller
|
|
* @dev_index: Arbitrary device index for use by controller
|
|
* @dev_id: Arbitrary device ID for use by controller
|
|
* @buswidth: Bus width in bits (8 or 4)
|
|
* @fifoth_val: Value for FIFOTH register (or 0 to leave unset)
|
|
* @mmc: Pointer to generic MMC structure for this device
|
|
* @priv: Private pointer for use by controller
|
|
*/
|
|
struct dwmci_host {
|
|
const char *name;
|
|
void *ioaddr;
|
|
unsigned int quirks;
|
|
unsigned int caps;
|
|
unsigned int version;
|
|
unsigned int clock;
|
|
unsigned int bus_hz;
|
|
unsigned int div;
|
|
int dev_index;
|
|
int dev_id;
|
|
int buswidth;
|
|
u32 fifoth_val;
|
|
struct mmc *mmc;
|
|
void *priv;
|
|
|
|
int (*clksel)(struct dwmci_host *host);
|
|
void (*board_init)(struct dwmci_host *host);
|
|
|
|
/**
|
|
* Get / set a particular MMC clock frequency
|
|
*
|
|
* This is used to request the current clock frequency of the clock
|
|
* that drives the DWMMC peripheral. The caller will then use this
|
|
* information to work out the divider it needs to achieve the
|
|
* required MMC bus clock frequency. If you want to handle the
|
|
* clock external to DWMMC, use @freq to select the frequency and
|
|
* return that value too. Then DWMMC will put itself in bypass mode.
|
|
*
|
|
* @host: DWMMC host
|
|
* @freq: Frequency the host is trying to achieve
|
|
*/
|
|
unsigned int (*get_mmc_clk)(struct dwmci_host *host, uint freq);
|
|
#ifndef CONFIG_BLK
|
|
struct mmc_config cfg;
|
|
#endif
|
|
|
|
/* use fifo mode to read and write data */
|
|
bool fifo_mode;
|
|
};
|
|
|
|
struct dwmci_idmac {
|
|
u32 flags;
|
|
u32 cnt;
|
|
u32 addr;
|
|
u32 next_addr;
|
|
} __aligned(ARCH_DMA_MINALIGN);
|
|
|
|
static inline void dwmci_writel(struct dwmci_host *host, int reg, u32 val)
|
|
{
|
|
writel(val, host->ioaddr + reg);
|
|
}
|
|
|
|
static inline void dwmci_writew(struct dwmci_host *host, int reg, u16 val)
|
|
{
|
|
writew(val, host->ioaddr + reg);
|
|
}
|
|
|
|
static inline void dwmci_writeb(struct dwmci_host *host, int reg, u8 val)
|
|
{
|
|
writeb(val, host->ioaddr + reg);
|
|
}
|
|
static inline u32 dwmci_readl(struct dwmci_host *host, int reg)
|
|
{
|
|
return readl(host->ioaddr + reg);
|
|
}
|
|
|
|
static inline u16 dwmci_readw(struct dwmci_host *host, int reg)
|
|
{
|
|
return readw(host->ioaddr + reg);
|
|
}
|
|
|
|
static inline u8 dwmci_readb(struct dwmci_host *host, int reg)
|
|
{
|
|
return readb(host->ioaddr + reg);
|
|
}
|
|
|
|
#ifdef CONFIG_BLK
|
|
/**
|
|
* dwmci_setup_cfg() - Set up the configuration for DWMMC
|
|
*
|
|
* This is used to set up a DWMMC device when you are using CONFIG_BLK.
|
|
*
|
|
* This should be called from your MMC driver's probe() method once you have
|
|
* the information required.
|
|
*
|
|
* Generally your driver will have a platform data structure which holds both
|
|
* the configuration (struct mmc_config) and the MMC device info (struct mmc).
|
|
* For example:
|
|
*
|
|
* struct rockchip_mmc_plat {
|
|
* struct mmc_config cfg;
|
|
* struct mmc mmc;
|
|
* };
|
|
*
|
|
* ...
|
|
*
|
|
* Inside U_BOOT_DRIVER():
|
|
* .plat_auto = sizeof(struct rockchip_mmc_plat),
|
|
*
|
|
* To access platform data:
|
|
* struct rockchip_mmc_plat *plat = dev_get_plat(dev);
|
|
*
|
|
* See rockchip_dw_mmc.c for an example.
|
|
*
|
|
* @cfg: Configuration structure to fill in (generally &plat->mmc)
|
|
* @host: DWMMC host
|
|
* @max_clk: Maximum supported clock speed in HZ (e.g. 150000000)
|
|
* @min_clk: Minimum supported clock speed in HZ (e.g. 400000)
|
|
*/
|
|
void dwmci_setup_cfg(struct mmc_config *cfg, struct dwmci_host *host,
|
|
u32 max_clk, u32 min_clk);
|
|
|
|
/**
|
|
* dwmci_bind() - Set up a new MMC block device
|
|
*
|
|
* This is used to set up a DWMMC block device when you are using CONFIG_BLK.
|
|
* It should be called from your driver's bind() method.
|
|
*
|
|
* See rockchip_dw_mmc.c for an example.
|
|
*
|
|
* @dev: Device to set up
|
|
* @mmc: Pointer to mmc structure (normally &plat->mmc)
|
|
* @cfg: Empty configuration structure (generally &plat->cfg). This is
|
|
* normally all zeroes at this point. The only purpose of passing
|
|
* this in is to set mmc->cfg to it.
|
|
* @return 0 if OK, -ve if the block device could not be created
|
|
*/
|
|
int dwmci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg);
|
|
|
|
#else
|
|
/**
|
|
* add_dwmci() - Add a new DWMMC interface
|
|
*
|
|
* This is used when you are not using CONFIG_BLK. Convert your driver over!
|
|
*
|
|
* @host: DWMMC host structure
|
|
* @max_clk: Maximum supported clock speed in HZ (e.g. 150000000)
|
|
* @min_clk: Minimum supported clock speed in HZ (e.g. 400000)
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk);
|
|
#endif /* !CONFIG_BLK */
|
|
|
|
#ifdef CONFIG_DM_MMC
|
|
/* Export the operations to drivers */
|
|
int dwmci_probe(struct udevice *dev);
|
|
extern const struct dm_mmc_ops dm_dwmci_ops;
|
|
#endif
|
|
|
|
#endif /* __DWMMC_HW_H */
|