1 /* 2 * Synopsys DesignWare Multimedia Card Interface driver 3 * (Based on NXP driver for lpc 31xx) 4 * 5 * Copyright (C) 2009 NXP Semiconductors 6 * Copyright (C) 2009, 2010 Imagination Technologies Ltd. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14 #ifndef _DW_MMC_H_ 15 #define _DW_MMC_H_ 16 17 #define DW_MMC_240A 0x240a 18 19 #define SDMMC_CTRL 0x000 20 #define SDMMC_PWREN 0x004 21 #define SDMMC_CLKDIV 0x008 22 #define SDMMC_CLKSRC 0x00c 23 #define SDMMC_CLKENA 0x010 24 #define SDMMC_TMOUT 0x014 25 #define SDMMC_CTYPE 0x018 26 #define SDMMC_BLKSIZ 0x01c 27 #define SDMMC_BYTCNT 0x020 28 #define SDMMC_INTMASK 0x024 29 #define SDMMC_CMDARG 0x028 30 #define SDMMC_CMD 0x02c 31 #define SDMMC_RESP0 0x030 32 #define SDMMC_RESP1 0x034 33 #define SDMMC_RESP2 0x038 34 #define SDMMC_RESP3 0x03c 35 #define SDMMC_MINTSTS 0x040 36 #define SDMMC_RINTSTS 0x044 37 #define SDMMC_STATUS 0x048 38 #define SDMMC_FIFOTH 0x04c 39 #define SDMMC_CDETECT 0x050 40 #define SDMMC_WRTPRT 0x054 41 #define SDMMC_GPIO 0x058 42 #define SDMMC_TCBCNT 0x05c 43 #define SDMMC_TBBCNT 0x060 44 #define SDMMC_DEBNCE 0x064 45 #define SDMMC_USRID 0x068 46 #define SDMMC_VERID 0x06c 47 #define SDMMC_HCON 0x070 48 #define SDMMC_UHS_REG 0x074 49 #define SDMMC_BMOD 0x080 50 #define SDMMC_PLDMND 0x084 51 #define SDMMC_DBADDR 0x088 52 #define SDMMC_IDSTS 0x08c 53 #define SDMMC_IDINTEN 0x090 54 #define SDMMC_DSCADDR 0x094 55 #define SDMMC_BUFADDR 0x098 56 #define SDMMC_CDTHRCTL 0x100 57 #define SDMMC_DATA(x) (x) 58 59 /* 60 * Data offset is difference according to Version 61 * Lower than 2.40a : data register offest is 0x100 62 */ 63 #define DATA_OFFSET 0x100 64 #define DATA_240A_OFFSET 0x200 65 66 /* shift bit field */ 67 #define _SBF(f, v) ((v) << (f)) 68 69 /* Control register defines */ 70 #define SDMMC_CTRL_USE_IDMAC BIT(25) 71 #define SDMMC_CTRL_CEATA_INT_EN BIT(11) 72 #define SDMMC_CTRL_SEND_AS_CCSD BIT(10) 73 #define SDMMC_CTRL_SEND_CCSD BIT(9) 74 #define SDMMC_CTRL_ABRT_READ_DATA BIT(8) 75 #define SDMMC_CTRL_SEND_IRQ_RESP BIT(7) 76 #define SDMMC_CTRL_READ_WAIT BIT(6) 77 #define SDMMC_CTRL_DMA_ENABLE BIT(5) 78 #define SDMMC_CTRL_INT_ENABLE BIT(4) 79 #define SDMMC_CTRL_DMA_RESET BIT(2) 80 #define SDMMC_CTRL_FIFO_RESET BIT(1) 81 #define SDMMC_CTRL_RESET BIT(0) 82 /* Clock Enable register defines */ 83 #define SDMMC_CLKEN_LOW_PWR BIT(16) 84 #define SDMMC_CLKEN_ENABLE BIT(0) 85 /* time-out register defines */ 86 #define SDMMC_TMOUT_DATA(n) _SBF(8, (n)) 87 #define SDMMC_TMOUT_DATA_MSK 0xFFFFFF00 88 #define SDMMC_TMOUT_RESP(n) ((n) & 0xFF) 89 #define SDMMC_TMOUT_RESP_MSK 0xFF 90 /* card-type register defines */ 91 #define SDMMC_CTYPE_8BIT BIT(16) 92 #define SDMMC_CTYPE_4BIT BIT(0) 93 #define SDMMC_CTYPE_1BIT 0 94 /* Interrupt status & mask register defines */ 95 #define SDMMC_INT_SDIO(n) BIT(16 + (n)) 96 #define SDMMC_INT_EBE BIT(15) 97 #define SDMMC_INT_ACD BIT(14) 98 #define SDMMC_INT_SBE BIT(13) 99 #define SDMMC_INT_HLE BIT(12) 100 #define SDMMC_INT_FRUN BIT(11) 101 #define SDMMC_INT_HTO BIT(10) 102 #define SDMMC_INT_DRTO BIT(9) 103 #define SDMMC_INT_RTO BIT(8) 104 #define SDMMC_INT_DCRC BIT(7) 105 #define SDMMC_INT_RCRC BIT(6) 106 #define SDMMC_INT_RXDR BIT(5) 107 #define SDMMC_INT_TXDR BIT(4) 108 #define SDMMC_INT_DATA_OVER BIT(3) 109 #define SDMMC_INT_CMD_DONE BIT(2) 110 #define SDMMC_INT_RESP_ERR BIT(1) 111 #define SDMMC_INT_CD BIT(0) 112 #define SDMMC_INT_ERROR 0xbfc2 113 /* Command register defines */ 114 #define SDMMC_CMD_START BIT(31) 115 #define SDMMC_CMD_USE_HOLD_REG BIT(29) 116 #define SDMMC_CMD_CCS_EXP BIT(23) 117 #define SDMMC_CMD_CEATA_RD BIT(22) 118 #define SDMMC_CMD_UPD_CLK BIT(21) 119 #define SDMMC_CMD_INIT BIT(15) 120 #define SDMMC_CMD_STOP BIT(14) 121 #define SDMMC_CMD_PRV_DAT_WAIT BIT(13) 122 #define SDMMC_CMD_SEND_STOP BIT(12) 123 #define SDMMC_CMD_STRM_MODE BIT(11) 124 #define SDMMC_CMD_DAT_WR BIT(10) 125 #define SDMMC_CMD_DAT_EXP BIT(9) 126 #define SDMMC_CMD_RESP_CRC BIT(8) 127 #define SDMMC_CMD_RESP_LONG BIT(7) 128 #define SDMMC_CMD_RESP_EXP BIT(6) 129 #define SDMMC_CMD_INDX(n) ((n) & 0x1F) 130 /* Status register defines */ 131 #define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF) 132 /* FIFOTH register defines */ 133 #define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 | \ 134 ((r) & 0xFFF) << 16 | \ 135 ((t) & 0xFFF)) 136 /* Internal DMAC interrupt defines */ 137 #define SDMMC_IDMAC_INT_AI BIT(9) 138 #define SDMMC_IDMAC_INT_NI BIT(8) 139 #define SDMMC_IDMAC_INT_CES BIT(5) 140 #define SDMMC_IDMAC_INT_DU BIT(4) 141 #define SDMMC_IDMAC_INT_FBE BIT(2) 142 #define SDMMC_IDMAC_INT_RI BIT(1) 143 #define SDMMC_IDMAC_INT_TI BIT(0) 144 /* Internal DMAC bus mode bits */ 145 #define SDMMC_IDMAC_ENABLE BIT(7) 146 #define SDMMC_IDMAC_FB BIT(1) 147 #define SDMMC_IDMAC_SWRESET BIT(0) 148 /* Version ID register define */ 149 #define SDMMC_GET_VERID(x) ((x) & 0xFFFF) 150 /* Card read threshold */ 151 #define SDMMC_SET_RD_THLD(v, x) (((v) & 0x1FFF) << 16 | (x)) 152 153 /* Register access macros */ 154 #define mci_readl(dev, reg) \ 155 __raw_readl((dev)->regs + SDMMC_##reg) 156 #define mci_writel(dev, reg, value) \ 157 __raw_writel((value), (dev)->regs + SDMMC_##reg) 158 159 /* 16-bit FIFO access macros */ 160 #define mci_readw(dev, reg) \ 161 __raw_readw((dev)->regs + SDMMC_##reg) 162 #define mci_writew(dev, reg, value) \ 163 __raw_writew((value), (dev)->regs + SDMMC_##reg) 164 165 /* 64-bit FIFO access macros */ 166 #ifdef readq 167 #define mci_readq(dev, reg) \ 168 __raw_readq((dev)->regs + SDMMC_##reg) 169 #define mci_writeq(dev, reg, value) \ 170 __raw_writeq((value), (dev)->regs + SDMMC_##reg) 171 #else 172 /* 173 * Dummy readq implementation for architectures that don't define it. 174 * 175 * We would assume that none of these architectures would configure 176 * the IP block with a 64bit FIFO width, so this code will never be 177 * executed on those machines. Defining these macros here keeps the 178 * rest of the code free from ifdefs. 179 */ 180 #define mci_readq(dev, reg) \ 181 (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg)) 182 #define mci_writeq(dev, reg, value) \ 183 (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value)) 184 #endif 185 186 extern int dw_mci_probe(struct dw_mci *host); 187 extern void dw_mci_remove(struct dw_mci *host); 188 #ifdef CONFIG_PM 189 extern int dw_mci_suspend(struct dw_mci *host); 190 extern int dw_mci_resume(struct dw_mci *host); 191 #endif 192 193 /** 194 * struct dw_mci_slot - MMC slot state 195 * @mmc: The mmc_host representing this slot. 196 * @host: The MMC controller this slot is using. 197 * @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX) 198 * @wp_gpio: If gpio_is_valid() we'll use this to read write protect. 199 * @ctype: Card type for this slot. 200 * @mrq: mmc_request currently being processed or waiting to be 201 * processed, or NULL when the slot is idle. 202 * @queue_node: List node for placing this node in the @queue list of 203 * &struct dw_mci. 204 * @clock: Clock rate configured by set_ios(). Protected by host->lock. 205 * @__clk_old: The last updated clock with reflecting clock divider. 206 * Keeping track of this helps us to avoid spamming the console 207 * with CONFIG_MMC_CLKGATE. 208 * @flags: Random state bits associated with the slot. 209 * @id: Number of this slot. 210 * @last_detect_state: Most recently observed card detect state. 211 */ 212 struct dw_mci_slot { 213 struct mmc_host *mmc; 214 struct dw_mci *host; 215 216 int quirks; 217 int wp_gpio; 218 219 u32 ctype; 220 221 struct mmc_request *mrq; 222 struct list_head queue_node; 223 224 unsigned int clock; 225 unsigned int __clk_old; 226 227 unsigned long flags; 228 #define DW_MMC_CARD_PRESENT 0 229 #define DW_MMC_CARD_NEED_INIT 1 230 int id; 231 int last_detect_state; 232 }; 233 234 struct dw_mci_tuning_data { 235 const u8 *blk_pattern; 236 unsigned int blksz; 237 }; 238 239 /** 240 * dw_mci driver data - dw-mshc implementation specific driver data. 241 * @caps: mmc subsystem specified capabilities of the controller(s). 242 * @init: early implementation specific initialization. 243 * @setup_clock: implementation specific clock configuration. 244 * @prepare_command: handle CMD register extensions. 245 * @set_ios: handle bus specific extensions. 246 * @parse_dt: parse implementation specific device tree properties. 247 * 248 * Provide controller implementation specific extensions. The usage of this 249 * data structure is fully optional and usage of each member in this structure 250 * is optional as well. 251 */ 252 struct dw_mci_drv_data { 253 unsigned long *caps; 254 int (*init)(struct dw_mci *host); 255 int (*setup_clock)(struct dw_mci *host); 256 void (*prepare_command)(struct dw_mci *host, u32 *cmdr); 257 void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); 258 int (*parse_dt)(struct dw_mci *host); 259 int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode, 260 struct dw_mci_tuning_data *tuning_data); 261 }; 262 #endif /* _DW_MMC_H_ */ 263