1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * (C) Copyright 2012 SAMSUNG Electronics
4 * Jaehoon Chung <jh80.chung@samsung.com>
13 #define DWMCI_CTRL 0x000
14 #define DWMCI_PWREN 0x004
15 #define DWMCI_CLKDIV 0x008
16 #define DWMCI_CLKSRC 0x00C
17 #define DWMCI_CLKENA 0x010
18 #define DWMCI_TMOUT 0x014
19 #define DWMCI_CTYPE 0x018
20 #define DWMCI_BLKSIZ 0x01C
21 #define DWMCI_BYTCNT 0x020
22 #define DWMCI_INTMASK 0x024
23 #define DWMCI_CMDARG 0x028
24 #define DWMCI_CMD 0x02C
25 #define DWMCI_RESP0 0x030
26 #define DWMCI_RESP1 0x034
27 #define DWMCI_RESP2 0x038
28 #define DWMCI_RESP3 0x03C
29 #define DWMCI_MINTSTS 0x040
30 #define DWMCI_RINTSTS 0x044
31 #define DWMCI_STATUS 0x048
32 #define DWMCI_FIFOTH 0x04C
33 #define DWMCI_CDETECT 0x050
34 #define DWMCI_WRTPRT 0x054
35 #define DWMCI_GPIO 0x058
36 #define DWMCI_TCMCNT 0x05C
37 #define DWMCI_TBBCNT 0x060
38 #define DWMCI_DEBNCE 0x064
39 #define DWMCI_USRID 0x068
40 #define DWMCI_VERID 0x06C
41 #define DWMCI_HCON 0x070
42 #define DWMCI_UHS_REG 0x074
43 #define DWMCI_BMOD 0x080
44 #define DWMCI_PLDMND 0x084
45 #define DWMCI_DBADDR 0x088
46 #define DWMCI_IDSTS 0x08C
47 #define DWMCI_IDINTEN 0x090
48 #define DWMCI_DSCADDR 0x094
49 #define DWMCI_BUFADDR 0x098
50 #define DWMCI_DATA 0x200
52 /* Interrupt Mask register */
53 #define DWMCI_INTMSK_ALL 0xffffffff
54 #define DWMCI_INTMSK_RE (1 << 1)
55 #define DWMCI_INTMSK_CDONE (1 << 2)
56 #define DWMCI_INTMSK_DTO (1 << 3)
57 #define DWMCI_INTMSK_TXDR (1 << 4)
58 #define DWMCI_INTMSK_RXDR (1 << 5)
59 #define DWMCI_INTMSK_DCRC (1 << 7)
60 #define DWMCI_INTMSK_RTO (1 << 8)
61 #define DWMCI_INTMSK_DRTO (1 << 9)
62 #define DWMCI_INTMSK_HTO (1 << 10)
63 #define DWMCI_INTMSK_FRUN (1 << 11)
64 #define DWMCI_INTMSK_HLE (1 << 12)
65 #define DWMCI_INTMSK_SBE (1 << 13)
66 #define DWMCI_INTMSK_ACD (1 << 14)
67 #define DWMCI_INTMSK_EBE (1 << 15)
69 /* Raw interrupt Regsiter */
70 #define DWMCI_DATA_ERR (DWMCI_INTMSK_EBE | DWMCI_INTMSK_SBE | DWMCI_INTMSK_HLE |\
71 DWMCI_INTMSK_FRUN | DWMCI_INTMSK_EBE | DWMCI_INTMSK_DCRC)
72 #define DWMCI_DATA_TOUT (DWMCI_INTMSK_HTO | DWMCI_INTMSK_DRTO)
74 #define DWMCI_CTRL_RESET (1 << 0)
75 #define DWMCI_CTRL_FIFO_RESET (1 << 1)
76 #define DWMCI_CTRL_DMA_RESET (1 << 2)
77 #define DWMCI_DMA_EN (1 << 5)
78 #define DWMCI_CTRL_SEND_AS_CCSD (1 << 10)
79 #define DWMCI_IDMAC_EN (1 << 25)
80 #define DWMCI_RESET_ALL (DWMCI_CTRL_RESET | DWMCI_CTRL_FIFO_RESET |\
84 #define DWMCI_CMD_RESP_EXP (1 << 6)
85 #define DWMCI_CMD_RESP_LENGTH (1 << 7)
86 #define DWMCI_CMD_CHECK_CRC (1 << 8)
87 #define DWMCI_CMD_DATA_EXP (1 << 9)
88 #define DWMCI_CMD_RW (1 << 10)
89 #define DWMCI_CMD_SEND_STOP (1 << 12)
90 #define DWMCI_CMD_ABORT_STOP (1 << 14)
91 #define DWMCI_CMD_PRV_DAT_WAIT (1 << 13)
92 #define DWMCI_CMD_UPD_CLK (1 << 21)
93 #define DWMCI_CMD_USE_HOLD_REG (1 << 29)
94 #define DWMCI_CMD_START (1 << 31)
97 #define DWMCI_CLKEN_ENABLE (1 << 0)
98 #define DWMCI_CLKEN_LOW_PWR (1 << 16)
100 /* Card-type registe */
101 #define DWMCI_CTYPE_1BIT 0
102 #define DWMCI_CTYPE_4BIT (1 << 0)
103 #define DWMCI_CTYPE_8BIT (1 << 16)
105 /* Status Register */
106 #define DWMCI_FIFO_EMPTY (1 << 2)
107 #define DWMCI_FIFO_FULL (1 << 3)
108 #define DWMCI_BUSY (1 << 9)
109 #define DWMCI_FIFO_MASK 0x1fff
110 #define DWMCI_FIFO_SHIFT 17
112 /* FIFOTH Register */
113 #define MSIZE(x) ((x) << 28)
114 #define RX_WMARK(x) ((x) << 16)
115 #define TX_WMARK(x) (x)
116 #define RX_WMARK_SHIFT 16
117 #define RX_WMARK_MASK (0xfff << RX_WMARK_SHIFT)
119 #define DWMCI_IDMAC_OWN (1 << 31)
120 #define DWMCI_IDMAC_CH (1 << 4)
121 #define DWMCI_IDMAC_FS (1 << 3)
122 #define DWMCI_IDMAC_LD (1 << 2)
124 /* Bus Mode Register */
125 #define DWMCI_BMOD_IDMAC_RESET (1 << 0)
126 #define DWMCI_BMOD_IDMAC_FB (1 << 1)
127 #define DWMCI_BMOD_IDMAC_EN (1 << 7)
130 #define DWMCI_DDR_MODE (1 << 16)
133 #define DWMCI_QUIRK_DISABLE_SMU (1 << 0)
136 * struct dwmci_host - Information about a designware MMC host
139 * @ioaddr: Base I/O address of controller
140 * @quirks: Quick flags - see DWMCI_QUIRK_...
141 * @caps: Capabilities - see MMC_MODE_...
142 * @bus_hz: Bus speed in Hz, if @get_mmc_clk() is NULL
143 * @div: Arbitrary clock divider value for use by controller
144 * @dev_index: Arbitrary device index for use by controller
145 * @dev_id: Arbitrary device ID for use by controller
146 * @buswidth: Bus width in bits (8 or 4)
147 * @fifoth_val: Value for FIFOTH register (or 0 to leave unset)
148 * @mmc: Pointer to generic MMC structure for this device
149 * @priv: Private pointer for use by controller
156 unsigned int version;
167 void (*clksel)(struct dwmci_host *host);
168 void (*board_init)(struct dwmci_host *host);
171 * Get / set a particular MMC clock frequency
173 * This is used to request the current clock frequency of the clock
174 * that drives the DWMMC peripheral. The caller will then use this
175 * information to work out the divider it needs to achieve the
176 * required MMC bus clock frequency. If you want to handle the
177 * clock external to DWMMC, use @freq to select the frequency and
178 * return that value too. Then DWMMC will put itself in bypass mode.
181 * @freq: Frequency the host is trying to achieve
183 unsigned int (*get_mmc_clk)(struct dwmci_host *host, uint freq);
185 struct mmc_config cfg;
188 /* use fifo mode to read and write data */
197 } __aligned(ARCH_DMA_MINALIGN);
199 static inline void dwmci_writel(struct dwmci_host *host, int reg, u32 val)
201 writel(val, host->ioaddr + reg);
204 static inline void dwmci_writew(struct dwmci_host *host, int reg, u16 val)
206 writew(val, host->ioaddr + reg);
209 static inline void dwmci_writeb(struct dwmci_host *host, int reg, u8 val)
211 writeb(val, host->ioaddr + reg);
213 static inline u32 dwmci_readl(struct dwmci_host *host, int reg)
215 return readl(host->ioaddr + reg);
218 static inline u16 dwmci_readw(struct dwmci_host *host, int reg)
220 return readw(host->ioaddr + reg);
223 static inline u8 dwmci_readb(struct dwmci_host *host, int reg)
225 return readb(host->ioaddr + reg);
230 * dwmci_setup_cfg() - Set up the configuration for DWMMC
232 * This is used to set up a DWMMC device when you are using CONFIG_BLK.
234 * This should be called from your MMC driver's probe() method once you have
235 * the information required.
237 * Generally your driver will have a platform data structure which holds both
238 * the configuration (struct mmc_config) and the MMC device info (struct mmc).
241 * struct rockchip_mmc_plat {
242 * struct mmc_config cfg;
248 * Inside U_BOOT_DRIVER():
249 * .platdata_auto_alloc_size = sizeof(struct rockchip_mmc_plat),
251 * To access platform data:
252 * struct rockchip_mmc_plat *plat = dev_get_platdata(dev);
254 * See rockchip_dw_mmc.c for an example.
256 * @cfg: Configuration structure to fill in (generally &plat->mmc)
258 * @max_clk: Maximum supported clock speed in HZ (e.g. 150000000)
259 * @min_clk: Minimum supported clock speed in HZ (e.g. 400000)
261 void dwmci_setup_cfg(struct mmc_config *cfg, struct dwmci_host *host,
262 u32 max_clk, u32 min_clk);
265 * dwmci_bind() - Set up a new MMC block device
267 * This is used to set up a DWMMC block device when you are using CONFIG_BLK.
268 * It should be called from your driver's bind() method.
270 * See rockchip_dw_mmc.c for an example.
272 * @dev: Device to set up
273 * @mmc: Pointer to mmc structure (normally &plat->mmc)
274 * @cfg: Empty configuration structure (generally &plat->cfg). This is
275 * normally all zeroes at this point. The only purpose of passing
276 * this in is to set mmc->cfg to it.
277 * @return 0 if OK, -ve if the block device could not be created
279 int dwmci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg);
283 * add_dwmci() - Add a new DWMMC interface
285 * This is used when you are not using CONFIG_BLK. Convert your driver over!
287 * @host: DWMMC host structure
288 * @max_clk: Maximum supported clock speed in HZ (e.g. 150000000)
289 * @min_clk: Minimum supported clock speed in HZ (e.g. 400000)
290 * @return 0 if OK, -ve on error
292 int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk);
293 #endif /* !CONFIG_BLK */
296 /* Export the operations to drivers */
297 int dwmci_probe(struct udevice *dev);
298 extern const struct dm_mmc_ops dm_dwmci_ops;
301 #endif /* __DWMMC_HW_H */