2 * Synopsys DesignWare Multimedia Card Interface driver
3 * (Based on NXP driver for lpc 31xx)
5 * Copyright (C) 2009 NXP Semiconductors
6 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
8 * Copyright (C) 2014 Fuzhou Rockchip Electronics Co.Ltd.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
18 #include "rk_sdmmc_dbg.h"
20 #define DW_MMC_240A 0x240a
21 #define DW_MMC_270A 0x270a
23 #define SDMMC_CTRL 0x000
24 #define SDMMC_PWREN 0x004
25 #define SDMMC_CLKDIV 0x008
26 #define SDMMC_CLKSRC 0x00c
27 #define SDMMC_CLKENA 0x010
28 #define SDMMC_TMOUT 0x014
29 #define SDMMC_CTYPE 0x018
30 #define SDMMC_BLKSIZ 0x01c
31 #define SDMMC_BYTCNT 0x020
32 #define SDMMC_INTMASK 0x024
33 #define SDMMC_CMDARG 0x028
34 #define SDMMC_CMD 0x02c
35 #define SDMMC_RESP0 0x030
36 #define SDMMC_RESP1 0x034
37 #define SDMMC_RESP2 0x038
38 #define SDMMC_RESP3 0x03c
39 #define SDMMC_MINTSTS 0x040
40 #define SDMMC_RINTSTS 0x044
41 #define SDMMC_STATUS 0x048
42 #define SDMMC_FIFOTH 0x04c
43 #define SDMMC_CDETECT 0x050
44 #define SDMMC_WRTPRT 0x054
45 #define SDMMC_GPIO 0x058
46 #define SDMMC_TCBCNT 0x05c
47 #define SDMMC_TBBCNT 0x060
48 #define SDMMC_DEBNCE 0x064
49 #define SDMMC_USRID 0x068
50 #define SDMMC_VERID 0x06c
51 #define SDMMC_HCON 0x070
52 #define SDMMC_UHS_REG 0x074
53 #define SDMMC_RST_N 0x078
54 #define SDMMC_BMOD 0x080
55 #define SDMMC_PLDMND 0x084
56 #define SDMMC_DBADDR 0x088
57 #define SDMMC_IDSTS 0x08c
58 #define SDMMC_IDINTEN 0x090
59 #define SDMMC_DSCADDR 0x094
60 #define SDMMC_BUFADDR 0x098
61 #define SDMMC_CDTHRCTL 0x100
62 #define SDMMC_DATA(x) (x)
65 static const u8 tuning_blk_pattern_4bit[] = {
66 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
67 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
68 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
69 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
70 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
71 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
72 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
73 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
76 static const u8 tuning_blk_pattern_8bit[] = {
77 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
78 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
79 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
80 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
81 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
82 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
83 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
84 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
85 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
86 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
87 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
88 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
89 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
90 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
91 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
92 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
96 * Data offset is difference according to Version
97 * Lower than 2.40a : data register offest is 0x100
99 #define DATA_OFFSET 0x100
100 #define DATA_240A_OFFSET 0x200
102 /* shift bit field */
103 #define _SBF(f, v) ((v) << (f))
111 static const struct sdmmc_reg dw_mci_regs[] = {
114 { 0x0008, "CLKDIV" },
115 { 0x000C, "CLKSRC" },
116 { 0x0010, "CLKENA" },
119 { 0x001C, "BLKSIZ" },
120 { 0x0020, "BYTCNT" },
121 { 0x0024, "INTMASK" },
122 { 0x0028, "CMDARG" },
128 { 0x0040, "MINSTS" },
129 { 0x0044, "RINTSTS" },
130 { 0x0048, "STATUS" },
131 { 0x004C, "FIFOTH" },
132 { 0x0050, "CDETECT" },
133 { 0x0054, "WRTPRT" },
135 { 0x005C, "TCBCNT" },
136 { 0x0060, "TBBCNT" },
137 { 0x0064, "DEBNCE" },
141 { 0x0074, "UHS_REG" },
144 { 0x0084, "PLDMND" },
145 { 0x0088, "DBADDR" },
147 { 0x0090, "IDINTEN" },
148 { 0x0094, "DSCADDR" },
149 { 0x0098, "BUFADDR" },
150 { 0x0100, "CARDTHRCTL" },
151 { 0x0104, "BackEndPwr" },
156 /* Control register defines */
157 #define SDMMC_CTRL_USE_IDMAC BIT(25)
158 #define SDMMC_CTRL_CEATA_INT_EN BIT(11)
159 #define SDMMC_CTRL_SEND_AS_CCSD BIT(10)
160 #define SDMMC_CTRL_SEND_CCSD BIT(9)
161 #define SDMMC_CTRL_ABRT_READ_DATA BIT(8)
162 #define SDMMC_CTRL_SEND_IRQ_RESP BIT(7)
163 #define SDMMC_CTRL_READ_WAIT BIT(6)
164 #define SDMMC_CTRL_DMA_ENABLE BIT(5)
165 #define SDMMC_CTRL_INT_ENABLE BIT(4)
166 #define SDMMC_CTRL_DMA_RESET BIT(2)
167 #define SDMMC_CTRL_FIFO_RESET BIT(1)
168 #define SDMMC_CTRL_RESET BIT(0)
169 /* Clock Enable register defines */
170 #define SDMMC_CLKEN_LOW_PWR BIT(16)
171 #define SDMMC_CLKEN_ENABLE BIT(0)
172 /* time-out register defines */
173 #define SDMMC_TMOUT_DATA(n) _SBF(8, (n))
174 #define SDMMC_TMOUT_DATA_MSK 0xFFFFFF00
175 #define SDMMC_TMOUT_RESP(n) ((n) & 0xFF)
176 #define SDMMC_TMOUT_RESP_MSK 0xFF
177 /* card-type register defines */
178 #define SDMMC_CTYPE_8BIT BIT(16)
179 #define SDMMC_CTYPE_4BIT BIT(0)
180 #define SDMMC_CTYPE_1BIT 0
181 /* Interrupt status & mask register defines */
182 #define SDMMC_INT_SDIO(n) BIT(16 + (n))
183 #define SDMMC_INT_EBE BIT(15)
184 #define SDMMC_INT_ACD BIT(14)
185 #define SDMMC_INT_SBE BIT(13)
186 #define SDMMC_INT_HLE BIT(12)
187 #define SDMMC_INT_FRUN BIT(11)
188 #define SDMMC_INT_HTO BIT(10)
189 #define SDMMC_INT_VSI SDMMC_INT_HTO
190 #define SDMMC_INT_DRTO BIT(9)
191 #define SDMMC_INT_RTO BIT(8)
192 #define SDMMC_INT_DCRC BIT(7)
193 #define SDMMC_INT_RCRC BIT(6)
194 #define SDMMC_INT_RXDR BIT(5)
195 #define SDMMC_INT_TXDR BIT(4)
196 #define SDMMC_INT_DATA_OVER BIT(3)
197 #define SDMMC_INT_CMD_DONE BIT(2)
198 #define SDMMC_INT_RESP_ERR BIT(1)
199 #define SDMMC_INT_CD BIT(0)
200 #define SDMMC_INT_ERROR 0xbfc2
201 /* Command register defines */
202 #define SDMMC_CMD_START BIT(31)
203 #define SDMMC_CMD_USE_HOLD_REG BIT(29)
204 #define SDMMC_CMD_VOLT_SWITCH BIT(28)
205 #define SDMMC_CMD_BOOT_MODE BIT(27)
206 #define SDMMC_CMD_DISABLE_BOOT BIT(26)
207 #define SDMMC_CMD_EXPECT_BOOT_ACK BIT(25)
208 #define SDMMC_CMD_ENABLE_BOOT BIT(24)
209 #define SDMMC_CMD_CCS_EXP BIT(23)
210 #define SDMMC_CMD_CEATA_RD BIT(22)
211 #define SDMMC_CMD_UPD_CLK BIT(21)
212 #define SDMMC_CMD_INIT BIT(15)
213 #define SDMMC_CMD_STOP BIT(14)
214 #define SDMMC_CMD_PRV_DAT_WAIT BIT(13)
215 #define SDMMC_CMD_SEND_STOP BIT(12)
216 #define SDMMC_CMD_STRM_MODE BIT(11)
217 #define SDMMC_CMD_DAT_WR BIT(10)
218 #define SDMMC_CMD_DAT_EXP BIT(9)
219 #define SDMMC_CMD_RESP_CRC BIT(8)
220 #define SDMMC_CMD_RESP_LONG BIT(7)
221 #define SDMMC_CMD_RESP_EXP BIT(6)
222 #define SDMMC_CMD_INDX(n) ((n) & 0x1F)
223 /* Status register defines */
224 #define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF)
225 #define SDMMC_STAUTS_MC_BUSY BIT(10)
226 #define SDMMC_STAUTS_DATA_BUSY BIT(9)
227 #define SDMMC_CMD_FSM_MASK (0x0F << 4)
228 #define SDMMC_CMD_FSM_IDLE (0x00)
229 #define SDMMC_STAUTS_FIFO_FULL BIT(3)
230 #define SDMMC_STAUTS_FIFO_EMPTY BIT(2)
232 /* Control SDMMC_UHS_REG defines (base+ 0x74)*/
233 #define SDMMC_UHS_DDR_MODE BIT(16)
234 #define SDMMC_UHS_VOLT_REG_18 BIT(0)
236 /* FIFOTH register defines */
237 #define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 | \
238 ((r) & 0xFFF) << 16 | \
240 /* Internal DMAC interrupt defines */
241 #define SDMMC_IDMAC_INT_AI BIT(9)
242 #define SDMMC_IDMAC_INT_NI BIT(8)
243 #define SDMMC_IDMAC_INT_CES BIT(5)
244 #define SDMMC_IDMAC_INT_DU BIT(4)
245 #define SDMMC_IDMAC_INT_FBE BIT(2)
246 #define SDMMC_IDMAC_INT_RI BIT(1)
247 #define SDMMC_IDMAC_INT_TI BIT(0)
248 /* Internal DMAC bus mode bits */
249 #define SDMMC_IDMAC_ENABLE BIT(7)
250 #define SDMMC_IDMAC_FB BIT(1)
251 #define SDMMC_IDMAC_SWRESET BIT(0)
252 /* Version ID register define */
253 #define SDMMC_GET_VERID(x) ((x) & 0xFFFF)
254 /* Card read threshold */
255 #define SDMMC_SET_RD_THLD(v, x) (((v) & 0x1FFF) << 16 | (x))
257 /* Register access macros */
258 #define mci_readl(dev, reg) \
259 __raw_readl((dev)->regs + SDMMC_##reg)
260 #define mci_writel(dev, reg, value) \
261 __raw_writel((value), (dev)->regs + SDMMC_##reg)
262 #define mci_readreg(dev, addr) \
263 __raw_readl((dev)->regs + addr)
264 #define mci_writereg(dev, addr, value) \
265 __raw_writel((value), (dev)->regs + addr)
268 /* 16-bit FIFO access macros */
269 #define mci_readw(dev, reg) \
270 __raw_readw((dev)->regs + SDMMC_##reg)
271 #define mci_writew(dev, reg, value) \
272 __raw_writew((value), (dev)->regs + SDMMC_##reg)
274 /* 64-bit FIFO access macros */
276 #define mci_readq(dev, reg) \
277 __raw_readq((dev)->regs + SDMMC_##reg)
278 #define mci_writeq(dev, reg, value) \
279 __raw_writeq((value), (dev)->regs + SDMMC_##reg)
282 * Dummy readq implementation for architectures that don't define it.
284 * We would assume that none of these architectures would configure
285 * the IP block with a 64bit FIFO width, so this code will never be
286 * executed on those machines. Defining these macros here keeps the
287 * rest of the code free from ifdefs.
289 #define mci_readq(dev, reg) \
290 (*(u64 __force *)((dev)->regs + SDMMC_##reg))
291 #define mci_writeq(dev, reg, value) \
292 (*(u64 __force *)((dev)->regs + SDMMC_##reg) = (value))
295 extern int dw_mci_suspend(struct dw_mci *host);
296 extern int dw_mci_resume(struct dw_mci *host);
298 static const struct dw_mci_rst_ops dw_mci_pdrst_ops;
301 * struct dw_mci_slot - MMC slot state
302 * @mmc: The mmc_host representing this slot.
303 * @host: The MMC controller this slot is using.
304 * @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX)
305 * @wp_gpio: If gpio_is_valid() we'll use this to read write protect.
306 * @ctype: Card type for this slot.
307 * @mrq: mmc_request currently being processed or waiting to be
308 * processed, or NULL when the slot is idle.
309 * @queue_node: List node for placing this node in the @queue list of
311 * @clock: Clock rate configured by set_ios(). Protected by host->lock.
312 * @__clk_old: The last updated clock with reflecting clock divider.
313 * Keeping track of this helps us to avoid spamming the console
314 * with CONFIG_MMC_CLKGATE.
315 * @flags: Random state bits associated with the slot.
316 * @id: Number of this slot.
317 * @last_detect_state: Most recently observed card detect state.
320 struct mmc_host *mmc;
329 struct mmc_request *mrq;
330 struct list_head queue_node;
333 unsigned int __clk_old;
336 #define DW_MMC_CARD_PRESENT 0
337 #define DW_MMC_CARD_NEED_INIT 1
339 int last_detect_state;
342 struct dw_mci_tuning_data {
343 const u8 *blk_pattern;
348 * dw_mci driver data - dw-mshc implementation specific driver data.
349 * @caps: mmc subsystem specified capabilities of the controller(s).
350 * @hold_reg_flag: Fixed the value of HOLG_REG
351 * @init: early implementation specific initialization.
352 * @setup_clock: implementation specific clock configuration.
353 * @prepare_command: handle CMD register extensions.
354 * @set_ios: handle bus specific extensions.
355 * @parse_dt: parse implementation specific device tree properties.
357 * Provide controller implementation specific extensions. The usage of this
358 * data structure is fully optional and usage of each member in this structure
359 * is optional as well.
362 struct dw_mci_drv_data {
364 unsigned int *hold_reg_flag;
366 int (*init)(struct dw_mci *host);
367 int (*setup_clock)(struct dw_mci *host);
368 void (*prepare_command)(struct dw_mci *host, u32 *cmdr);
369 void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
370 int (*parse_dt)(struct dw_mci *host);
371 int (*execute_tuning)(struct dw_mci_slot *slot,
373 struct dw_mci_tuning_data
377 /* Variations in Rockchip specific dw-mshc controller */
378 enum dw_mci_rockchip_type {
386 #endif /* _DW_MMC_H_ */