| /* 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> |
| |
| #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; |
| |
| void (*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(): |
| * .platdata_auto_alloc_size = sizeof(struct rockchip_mmc_plat), |
| * |
| * To access platform data: |
| * struct rockchip_mmc_plat *plat = dev_get_platdata(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 */ |