2 * (C) Copyright 2012 SAMSUNG Electronics
3 * Jaehoon Chung <jh80.chung@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
14 #define DWMCI_CTRL 0x000
15 #define DWMCI_PWREN 0x004
16 #define DWMCI_CLKDIV 0x008
17 #define DWMCI_CLKSRC 0x00C
18 #define DWMCI_CLKENA 0x010
19 #define DWMCI_TMOUT 0x014
20 #define DWMCI_CTYPE 0x018
21 #define DWMCI_BLKSIZ 0x01C
22 #define DWMCI_BYTCNT 0x020
23 #define DWMCI_INTMASK 0x024
24 #define DWMCI_CMDARG 0x028
25 #define DWMCI_CMD 0x02C
26 #define DWMCI_RESP0 0x030
27 #define DWMCI_RESP1 0x034
28 #define DWMCI_RESP2 0x038
29 #define DWMCI_RESP3 0x03C
30 #define DWMCI_MINTSTS 0x040
31 #define DWMCI_RINTSTS 0x044
32 #define DWMCI_STATUS 0x048
33 #define DWMCI_FIFOTH 0x04C
34 #define DWMCI_CDETECT 0x050
35 #define DWMCI_WRTPRT 0x054
36 #define DWMCI_GPIO 0x058
37 #define DWMCI_TCMCNT 0x05C
38 #define DWMCI_TBBCNT 0x060
39 #define DWMCI_DEBNCE 0x064
40 #define DWMCI_USRID 0x068
41 #define DWMCI_VERID 0x06C
42 #define DWMCI_HCON 0x070
43 #define DWMCI_UHS_REG 0x074
44 #define DWMCI_BMOD 0x080
45 #define DWMCI_PLDMND 0x084
46 #define DWMCI_DBADDR 0x088
47 #define DWMCI_IDSTS 0x08C
48 #define DWMCI_IDINTEN 0x090
49 #define DWMCI_DSCADDR 0x094
50 #define DWMCI_BUFADDR 0x098
51 #define DWMCI_DATA 0x200
53 /* Interrupt Mask register */
54 #define DWMCI_INTMSK_ALL 0xffffffff
55 #define DWMCI_INTMSK_RE (1 << 1)
56 #define DWMCI_INTMSK_CDONE (1 << 2)
57 #define DWMCI_INTMSK_DTO (1 << 3)
58 #define DWMCI_INTMSK_TXDR (1 << 4)
59 #define DWMCI_INTMSK_RXDR (1 << 5)
60 #define DWMCI_INTMSK_DCRC (1 << 7)
61 #define DWMCI_INTMSK_RTO (1 << 8)
62 #define DWMCI_INTMSK_DRTO (1 << 9)
63 #define DWMCI_INTMSK_HTO (1 << 10)
64 #define DWMCI_INTMSK_FRUN (1 << 11)
65 #define DWMCI_INTMSK_HLE (1 << 12)
66 #define DWMCI_INTMSK_SBE (1 << 13)
67 #define DWMCI_INTMSK_ACD (1 << 14)
68 #define DWMCI_INTMSK_EBE (1 << 15)
70 /* Raw interrupt Regsiter */
71 #define DWMCI_DATA_ERR (DWMCI_INTMSK_EBE | DWMCI_INTMSK_SBE | DWMCI_INTMSK_HLE |\
72 DWMCI_INTMSK_FRUN | DWMCI_INTMSK_EBE | DWMCI_INTMSK_DCRC)
73 #define DWMCI_DATA_TOUT (DWMCI_INTMSK_HTO | DWMCI_INTMSK_DRTO)
75 #define DWMCI_CTRL_RESET (1 << 0)
76 #define DWMCI_CTRL_FIFO_RESET (1 << 1)
77 #define DWMCI_CTRL_DMA_RESET (1 << 2)
78 #define DWMCI_DMA_EN (1 << 5)
79 #define DWMCI_CTRL_SEND_AS_CCSD (1 << 10)
80 #define DWMCI_IDMAC_EN (1 << 25)
81 #define DWMCI_RESET_ALL (DWMCI_CTRL_RESET | DWMCI_CTRL_FIFO_RESET |\
85 #define DWMCI_CMD_RESP_EXP (1 << 6)
86 #define DWMCI_CMD_RESP_LENGTH (1 << 7)
87 #define DWMCI_CMD_CHECK_CRC (1 << 8)
88 #define DWMCI_CMD_DATA_EXP (1 << 9)
89 #define DWMCI_CMD_RW (1 << 10)
90 #define DWMCI_CMD_SEND_STOP (1 << 12)
91 #define DWMCI_CMD_ABORT_STOP (1 << 14)
92 #define DWMCI_CMD_PRV_DAT_WAIT (1 << 13)
93 #define DWMCI_CMD_UPD_CLK (1 << 21)
94 #define DWMCI_CMD_USE_HOLD_REG (1 << 29)
95 #define DWMCI_CMD_START (1 << 31)
98 #define DWMCI_CLKEN_ENABLE (1 << 0)
99 #define DWMCI_CLKEN_LOW_PWR (1 << 16)
101 /* Card-type registe */
102 #define DWMCI_CTYPE_1BIT 0
103 #define DWMCI_CTYPE_4BIT (1 << 0)
104 #define DWMCI_CTYPE_8BIT (1 << 16)
106 /* Status Register */
107 #define DWMCI_BUSY (1 << 9)
109 /* FIFOTH Register */
110 #define MSIZE(x) ((x) << 28)
111 #define RX_WMARK(x) ((x) << 16)
112 #define TX_WMARK(x) (x)
113 #define RX_WMARK_SHIFT 16
114 #define RX_WMARK_MASK (0xfff << RX_WMARK_SHIFT)
116 #define DWMCI_IDMAC_OWN (1 << 31)
117 #define DWMCI_IDMAC_CH (1 << 4)
118 #define DWMCI_IDMAC_FS (1 << 3)
119 #define DWMCI_IDMAC_LD (1 << 2)
121 /* Bus Mode Register */
122 #define DWMCI_BMOD_IDMAC_RESET (1 << 0)
123 #define DWMCI_BMOD_IDMAC_FB (1 << 1)
124 #define DWMCI_BMOD_IDMAC_EN (1 << 7)
127 #define DWMCI_DDR_MODE (1 << 16)
130 #define DWMCI_QUIRK_DISABLE_SMU (1 << 0)
133 * struct dwmci_host - Information about a designware MMC host
136 * @ioaddr: Base I/O address of controller
137 * @quirks: Quick flags - see DWMCI_QUIRK_...
138 * @caps: Capabilities - see MMC_MODE_...
139 * @bus_hz: Bus speed in Hz, if @get_mmc_clk() is NULL
140 * @div: Arbitrary clock divider value for use by controller
141 * @dev_index: Arbitrary device index for use by controller
142 * @dev_id: Arbitrary device ID for use by controller
143 * @buswidth: Bus width in bits (8 or 4)
144 * @fifoth_val: Value for FIFOTH register (or 0 to leave unset)
145 * @mmc: Pointer to generic MMC structure for this device
146 * @priv: Private pointer for use by controller
153 unsigned int version;
164 void (*clksel)(struct dwmci_host *host);
165 void (*board_init)(struct dwmci_host *host);
168 * Get / set a particular MMC clock frequency
170 * This is used to request the current clock frequency of the clock
171 * that drives the DWMMC peripheral. The caller will then use this
172 * information to work out the divider it needs to achieve the
173 * required MMC bus clock frequency. If you want to handle the
174 * clock external to DWMMC, use @freq to select the frequency and
175 * return that value too. Then DWMMC will put itself in bypass mode.
178 * @freq: Frequency the host is trying to achieve
180 unsigned int (*get_mmc_clk)(struct dwmci_host *host, uint freq);
182 struct mmc_config cfg;
190 } __aligned(ARCH_DMA_MINALIGN);
192 static inline void dwmci_writel(struct dwmci_host *host, int reg, u32 val)
194 writel(val, host->ioaddr + reg);
197 static inline void dwmci_writew(struct dwmci_host *host, int reg, u16 val)
199 writew(val, host->ioaddr + reg);
202 static inline void dwmci_writeb(struct dwmci_host *host, int reg, u8 val)
204 writeb(val, host->ioaddr + reg);
206 static inline u32 dwmci_readl(struct dwmci_host *host, int reg)
208 return readl(host->ioaddr + reg);
211 static inline u16 dwmci_readw(struct dwmci_host *host, int reg)
213 return readw(host->ioaddr + reg);
216 static inline u8 dwmci_readb(struct dwmci_host *host, int reg)
218 return readb(host->ioaddr + reg);
221 int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk);
222 #endif /* __DWMMC_HW_H */