2 * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
4 * Header file for Host Controller registers and I/O accessors.
6 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
7 * Copyright (c) 2011-2015, NVIDIA CORPORATION. All Rights Reserved.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or (at
12 * your option) any later version.
17 #include <linux/scatterlist.h>
18 #include <linux/compiler.h>
19 #include <linux/types.h>
22 #include <linux/mmc/sdhci.h>
25 * Controller registers
28 #define SDHCI_DMA_ADDRESS 0x00
29 #define SDHCI_ARGUMENT2 SDHCI_DMA_ADDRESS
31 #define SDHCI_BLOCK_SIZE 0x04
32 #define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
34 #define SDHCI_BLOCK_COUNT 0x06
36 #define SDHCI_ARGUMENT 0x08
38 #define SDHCI_TRANSFER_MODE 0x0C
39 #define SDHCI_TRNS_DMA 0x01
40 #define SDHCI_TRNS_BLK_CNT_EN 0x02
41 #define SDHCI_TRNS_AUTO_CMD12 0x04
42 #define SDHCI_TRNS_AUTO_CMD23 0x08
43 #define SDHCI_TRNS_READ 0x10
44 #define SDHCI_TRNS_MULTI 0x20
45 #define SDHCI_TRNS_RESP_TYPE 0x40
46 #define SDHCI_TRNS_ERR_CHECK 0x80
47 #define SDHCI_TRNS_RES_INT_DIS 0x100
49 #define SDHCI_COMMAND 0x0E
50 #define SDHCI_CMD_RESP_MASK 0x03
51 #define SDHCI_CMD_CRC 0x08
52 #define SDHCI_CMD_INDEX 0x10
53 #define SDHCI_CMD_DATA 0x20
54 #define SDHCI_CMD_ABORTCMD 0xC0
56 #define SDHCI_CMD_RESP_NONE 0x00
57 #define SDHCI_CMD_RESP_LONG 0x01
58 #define SDHCI_CMD_RESP_SHORT 0x02
59 #define SDHCI_CMD_RESP_SHORT_BUSY 0x03
61 #define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
62 #define SDHCI_GET_CMD(c) ((c>>8) & 0x3f)
64 #define SDHCI_RESPONSE 0x10
66 #define SDHCI_BUFFER 0x20
68 #define SDHCI_PRESENT_STATE 0x24
69 #define SDHCI_CMD_INHIBIT 0x00000001
70 #define SDHCI_DATA_INHIBIT 0x00000002
71 #define SDHCI_RETUNING_REQUIRED 0x00000008
72 #define SDHCI_DATA_7_4_LVL 0x00000010
73 #define SDHCI_DATA_7_4_LVL_SHIFT 4
74 #define SDHCI_DOING_WRITE 0x00000100
75 #define SDHCI_DOING_READ 0x00000200
76 #define SDHCI_SPACE_AVAILABLE 0x00000400
77 #define SDHCI_DATA_AVAILABLE 0x00000800
78 #define SDHCI_CARD_PRESENT 0x00010000
79 #define SDHCI_WRITE_PROTECT 0x00080000
80 #define SDHCI_DATA_LVL_MASK 0x00F00000
81 #define SDHCI_DATA_LVL_SHIFT 20
82 #define SDHCI_IN_DORMANT_STATE 0x20000000
83 #define SDHCI_UHS2_LANE_SYNC_PHY_INITIALIZED 0x40000000
84 #define SDHCI_UHS2_IF_DETECTED 0x80000000
87 #define SDHCI_HOST_CONTROL 0x28
88 #define SDHCI_CTRL_LED 0x01
89 #define SDHCI_CTRL_4BITBUS 0x02
90 #define SDHCI_CTRL_HISPD 0x04
91 #define SDHCI_CTRL_DMA_MASK 0x18
92 #define SDHCI_CTRL_SDMA 0x00
93 #define SDHCI_CTRL_RSVD 0x08
94 #define SDHCI_CTRL_ADMA2 0x10
95 #define SDHCI_CTRL_ADMA3 0x18
96 #define SDHCI_CTRL_8BITBUS 0x20
97 #define SDHCI_CTRL_SD_BUS_POWER_ON 0x00000100
98 #define SDHCI_CTRL_SD_BUS_VOLTAGE_SELECT_SHIFT 9
99 #define SDHCI_CTRL_SD_BUS_VOLTAGE_SELECT_MASK 0x00000E00
100 #define SDHCI_CTRL_SD_BUS_POWER_ON_VDD2 0x00001000
101 #define SDHCI_CTRL_SD_BUS_VOLTAGE_SELECT_VDD2_SHIFT 13
102 #define SDHCI_CTRL_SD_BUS_VOLTAGE_SELECT_VDD2_MASK 0x0000E000
103 #define SDHCI_CTRL_SD_BUS_VOLTAGE_V1_8 5
104 #define SDHCI_CTRL_SD_BUS_VOLTAGE_V3_0 6
105 #define SDHCI_CTRL_SD_BUS_VOLTAGE_V3_3 7
107 #define SDHCI_POWER_CONTROL 0x29
108 #define SDHCI_POWER_ON 0x01
109 #define SDHCI_POWER_180 0x0A
110 #define SDHCI_POWER_300 0x0C
111 #define SDHCI_POWER_330 0x0E
113 #define SDHCI_BLOCK_GAP_CONTROL 0x2A
115 #define SDHCI_WAKE_UP_CONTROL 0x2B
116 #define SDHCI_WAKE_ON_INT 0x01
117 #define SDHCI_WAKE_ON_INSERT 0x02
118 #define SDHCI_WAKE_ON_REMOVE 0x04
120 #define SDHCI_CLOCK_CONTROL 0x2C
121 #define SDHCI_DIVIDER_SHIFT 8
122 #define SDHCI_DIVIDER_HI_SHIFT 6
123 #define SDHCI_DIV_MASK 0xFF
124 #define SDHCI_DIV_MASK_LEN 8
125 #define SDHCI_DIV_HI_MASK 0x300
126 #define SDHCI_UPPER_SDCLK_FREQUENCYSELECT_MASK 0x00C0
127 #define SDHCI_PROG_CLOCK_MODE 0x0020
128 #define SDHCI_CLOCK_CARD_EN 0x0004
129 #define SDHCI_CLOCK_INT_STABLE 0x0002
130 #define SDHCI_CLOCK_INT_EN 0x0001
132 #define SDHCI_TIMEOUT_CONTROL 0x2E
134 #define SDHCI_SOFTWARE_RESET 0x2F
135 #define SDHCI_RESET_ALL 0x01
136 #define SDHCI_RESET_CMD 0x02
137 #define SDHCI_RESET_DATA 0x04
139 #define SDHCI_INT_STATUS 0x30
140 #define SDHCI_INT_ENABLE 0x34
141 #define SDHCI_SIGNAL_ENABLE 0x38
142 #define SDHCI_INT_RESPONSE 0x00000001
143 #define SDHCI_INT_DATA_END 0x00000002
144 #define SDHCI_INT_BLK_GAP 0x00000004
145 #define SDHCI_INT_DMA_END 0x00000008
146 #define SDHCI_INT_SPACE_AVAIL 0x00000010
147 #define SDHCI_INT_DATA_AVAIL 0x00000020
148 #define SDHCI_INT_CARD_INSERT 0x00000040
149 #define SDHCI_INT_CARD_REMOVE 0x00000080
150 #define SDHCI_INT_RETUNING_EVENT 0x00001000
151 #define SDHCI_INT_CARD_INT 0x00000100
152 #define SDHCI_INT_ERROR 0x00008000
153 #define SDHCI_INT_TIMEOUT 0x00010000
154 #define SDHCI_INT_CRC 0x00020000
155 #define SDHCI_INT_END_BIT 0x00040000
156 #define SDHCI_INT_INDEX 0x00080000
157 #define SDHCI_INT_DATA_TIMEOUT 0x00100000
158 #define SDHCI_INT_DATA_CRC 0x00200000
159 #define SDHCI_INT_DATA_END_BIT 0x00400000
160 #define SDHCI_INT_BUS_POWER 0x00800000
161 #define SDHCI_INT_ACMD12ERR 0x01000000
162 #define SDHCI_INT_ADMA_ERROR 0x02000000
163 #define SDHCI_INT_TUNING_ERROR 0x04000000
164 #define SDHCI_INT_RESP_ERROR 0x08000000
165 #define SDHCI_INT_SPI_ERROR 0x20000000
167 #define SDHCI_INT_NORMAL_MASK 0x00007FFF
168 #define SDHCI_INT_ERROR_MASK 0xFFFF8000
170 #define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
171 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
172 #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
173 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
174 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
175 SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \
177 #define SDHCI_INT_ALL_MASK ((unsigned int)-1)
179 #define SDHCI_ACMD12_ERR 0x3C
180 #define SDHCI_NOT_EXECUTED 0x00000001
181 #define SDHCI_TIMEOUT_ERR 0x00000002
182 #define SDHCI_CRC_ERR 0x00000004
183 #define SDHCI_END_BIT_ERR 0x00000008
184 #define SDHCI_INDEX_ERR 0x00000010
185 #define SDHCI_COMMAND_NOT_ISSUED 0x0080
186 #define SDHCI_UHS_MODE_SEL_SHIFT 16
187 #define SDHCI_UHS_MODE_SEL_MASK 000x0700
188 #define SDHCI_UHS_SDR12 0
189 #define SDHCI_UHS_SDR25 1
190 #define SDHCI_UHS_SDR50 2
191 #define SDHCI_UHS_SDR104 3
192 #define SDHCI_UHS_DDR50 4
194 #define SDHCI_VOLT_18_EN 0x00080000
195 #define SDHCI_EXECUTE_TUNING 0x00400000
196 #define SDHCI_SAMPLING_CLK_TUNED 0x00800000
197 #define SDHCI_UHS2_IF_EN 0x01000000
198 #define SDHCI_HOST_VERSION_4_EN 0x10000000
199 #define SDHCI_ADDRESSING_64BIT_EN 0x20000000
200 #define SDHCI_ASYNC_INTR_EN 0x40000000
201 #define SDHCI_PRESET_VALUE_SW_SEL 0x80000000
203 #define SDHCI_HOST_CONTROL2 0x3E
204 #define SDHCI_CTRL_UHS_MASK 0x0007
205 #define SDHCI_CTRL_UHS_SDR12 0x0000
206 #define SDHCI_CTRL_UHS_SDR25 0x0001
207 #define SDHCI_CTRL_UHS_SDR50 0x0002
208 #define SDHCI_CTRL_UHS_SDR104 0x0003
209 #define SDHCI_CTRL_UHS_DDR50 0x0004
210 #define SDHCI_CTRL_UHS_HS400 0x0005
211 #define SDHCI_CTRL_HS_SDR200 0x0006 /* reserved value in SDIO spec */
212 #define SDHCI_CTRL_VDD_180 0x0008
213 #define SDHCI_CTRL_DRV_TYPE_MASK 0x0030
214 #define SDHCI_CTRL_DRV_TYPE_B 0x0000
215 #define SDHCI_CTRL_DRV_TYPE_A 0x0010
216 #define SDHCI_CTRL_DRV_TYPE_C 0x0020
217 #define SDHCI_CTRL_DRV_TYPE_D 0x0030
218 #define SDHCI_CTRL_EXEC_TUNING 0x0040
219 #define SDHCI_CTRL_TUNED_CLK 0x0080
220 #define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000
222 #define SDHCI_CAPABILITIES 0x40
223 #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
224 #define SDHCI_TIMEOUT_CLK_SHIFT 0
225 #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
226 #define SDHCI_CLOCK_BASE_MASK 0x0000FF00
227 #define SDHCI_CLOCK_V3_BASE_MASK 0x0000FF00
228 #define SDHCI_CLOCK_BASE_SHIFT 8
229 #define SDHCI_MAX_BLOCK_MASK 0x00030000
230 #define SDHCI_MAX_BLOCK_SHIFT 16
231 #define SDHCI_CAN_DO_8BIT 0x00040000
232 #define SDHCI_CAN_DO_ADMA2 0x00080000
233 #define SDHCI_CAN_DO_HISPD 0x00200000
234 #define SDHCI_CAN_DO_SDMA 0x00400000
235 #define SDHCI_CAN_VDD_330 0x01000000
236 #define SDHCI_CAN_VDD_300 0x02000000
237 #define SDHCI_CAN_VDD_180 0x04000000
238 #define SDHCI_CAN_64BIT 0x10000000
239 #define SDHCI_CAN_ASYNC_INTR 0x20000000
240 #define SDHCI_CAN_SLOT_TYPE 0x40000000
242 #define SDHCI_CAPABILITIES_1 0x44
243 #define SDHCI_SUPPORT_SDR50 0x00000001
244 #define SDHCI_SUPPORT_SDR104 0x00000002
245 #define SDHCI_SUPPORT_DDR50 0x00000004
246 #define SDHCI_SUPPORT_UHS2 0x00000008
247 #define SDHCI_DRIVER_TYPE_A 0x00000010
248 #define SDHCI_DRIVER_TYPE_C 0x00000020
249 #define SDHCI_DRIVER_TYPE_D 0x00000040
250 #define SDHCI_RETUNING_TIMER_COUNT_MASK 0x00000F00
251 #define SDHCI_RETUNING_TIMER_COUNT_SHIFT 8
252 #define SDHCI_USE_SDR50_TUNING 0x00002000
253 #define SDHCI_RETUNING_MODE_MASK 0x0000C000
254 #define SDHCI_RETUNING_MODE_SHIFT 14
255 #define SDHCI_CLOCK_MUL_MASK 0x00FF0000
256 #define SDHCI_CLOCK_MUL_SHIFT 16
257 #define SDHCI_SUPPORT_ADMA3 0x08000000
258 #define SDHCI_SUPPORT_VDD2_1_8V 0x10000000
260 #define SDHCI_MAX_CURRENT 0x48
261 #define SDHCI_MAX_CURRENT_LIMIT 0xFF
262 #define SDHCI_MAX_CURRENT_330_MASK 0x0000FF
263 #define SDHCI_MAX_CURRENT_330_SHIFT 0
264 #define SDHCI_MAX_CURRENT_300_MASK 0x00FF00
265 #define SDHCI_MAX_CURRENT_300_SHIFT 8
266 #define SDHCI_MAX_CURRENT_180_MASK 0xFF0000
267 #define SDHCI_MAX_CURRENT_180_SHIFT 16
268 #define SDHCI_MAX_CURRENT_MULTIPLIER 4
270 /* 4C-4F reserved for more max current */
272 #define SDHCI_SET_ACMD12_ERROR 0x50
273 #define SDHCI_SET_INT_ERROR 0x52
275 #define SDHCI_ADMA_ERROR 0x54
279 #define SDHCI_ADMA_ADDRESS 0x58
280 #define SDHCI_UPPER_ADMA_ADDRESS 0x5C
282 #define SDHCI_PRESET_DEFAULT_AND_INIT 0x60
283 #define SDHCI_PRESET_SDR12_AND_HIGH 0x64
284 #define SDHCI_PRESET_SDR50_AND_SDR25 0x68
285 #define SDHCI_PRESET_DDR50_AND_SDR104 0x6C
286 #define SDHCI_PRESET_DDR50_AND_SDR104 0x6C
287 #define SDHCI_SDCLK_FREQ_VAL_LOW_SHIFT 0
288 #define SDHCI_SDCLK_FREQ_VAL_LOW_MASK 0x000003FF
289 #define SDHCI_SDCLK_FREQ_VAL_HIGH_SHIFT 16
290 #define SDHCI_SDCLK_FREQ_VAL_HIGH_MASK 0x03FF0000
291 #define SDHCI_CLK_GEN_VAL_LOW_SHIFT 10
292 #define SDHCI_CLK_GEN_VAL_LOW_MASK 0x00000400
293 #define SDHCI_CLK_GEN_VAL_HIGH_SHIFT 26
294 #define SDHCI_CLK_GEN_VAL_HIGH_MASK 0x04000000
295 #define SDHCI_DRIVE_STRENGTH_VAL_LOW_SHIFT 14
296 #define SDHCI_DRIVE_STRENGTH_VAL_LOW_MASK 0x0000C000
297 #define SDHCI_DRIVE_STRENGTH_VAL_HIGH_SHIFT 30
298 #define SDHCI_DRIVE_STRENGTH_VAL_HIGH_MASK 0xC0000000
300 #define SDHCI_PRESET_FOR_SDR12 0x66
301 #define SDHCI_PRESET_FOR_SDR25 0x68
302 #define SDHCI_PRESET_FOR_SDR50 0x6A
303 #define SDHCI_PRESET_FOR_SDR104 0x6C
304 #define SDHCI_PRESET_FOR_DDR50 0x6E
305 #define SDHCI_PRESET_DRV_MASK 0xC000
306 #define SDHCI_PRESET_DRV_SHIFT 14
307 #define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400
308 #define SDHCI_PRESET_CLKGEN_SEL_SHIFT 10
309 #define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF
310 #define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0
312 #define SDHCI_SLOT_INT_STATUS 0xFC
314 #define SDHCI_HOST_VERSION 0xFE
315 #define SDHCI_VENDOR_VER_MASK 0xFF00
316 #define SDHCI_VENDOR_VER_SHIFT 8
317 #define SDHCI_SPEC_VER_MASK 0x00FF
318 #define SDHCI_SPEC_VER_SHIFT 0
319 #define SDHCI_SPEC_100 0
320 #define SDHCI_SPEC_200 1
321 #define SDHCI_SPEC_300 2
322 #define SDHCI_SPEC_400 3
325 * End of controller registers.
328 #define SDHCI_MAX_DIV_SPEC_200 256
329 #define SDHCI_MAX_DIV_SPEC_300 2046
331 /* Time (in milli sec) interval to run auto calibration */
332 #define SDHCI_PERIODIC_CALIB_TIMEOUT 100
335 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
337 #define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
338 #define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12)
341 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
342 u32 (*read_l)(struct sdhci_host *host, int reg);
343 u16 (*read_w)(struct sdhci_host *host, int reg);
344 u8 (*read_b)(struct sdhci_host *host, int reg);
345 void (*write_l)(struct sdhci_host *host, u32 val, int reg);
346 void (*write_w)(struct sdhci_host *host, u16 val, int reg);
347 void (*write_b)(struct sdhci_host *host, u8 val, int reg);
350 void (*set_clock)(struct sdhci_host *host, unsigned int clock);
352 int (*enable_dma)(struct sdhci_host *host);
353 unsigned int (*get_max_clock)(struct sdhci_host *host);
354 unsigned int (*get_min_clock)(struct sdhci_host *host);
355 unsigned int (*get_timeout_clock)(struct sdhci_host *host);
356 int (*platform_bus_width)(struct sdhci_host *host,
358 void (*platform_send_init_74_clocks)(struct sdhci_host *host,
360 unsigned int (*get_ro)(struct sdhci_host *host);
361 unsigned int (*get_cd)(struct sdhci_host *host);
362 void (*platform_reset_enter)(struct sdhci_host *host, u8 mask);
363 void (*platform_reset_exit)(struct sdhci_host *host, u8 mask);
364 int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
365 void (*hw_reset)(struct sdhci_host *host);
366 void (*platform_suspend)(struct sdhci_host *host);
367 void (*platform_resume)(struct sdhci_host *host);
368 void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
369 void (*platform_init)(struct sdhci_host *host);
370 void (*platform_get_bus)(struct sdhci_host *host);
371 void (*platform_ios_config_enter)(struct sdhci_host *host,
372 struct mmc_ios *ios);
373 void (*platform_ios_config_exit)(struct sdhci_host *host,
374 struct mmc_ios *ios);
375 int (*switch_signal_voltage)(struct sdhci_host *host,
376 unsigned int signal_voltage);
377 void (*switch_signal_voltage_exit)(struct sdhci_host *host,
378 unsigned char signal_voltage);
379 int (*suspend)(struct sdhci_host *host);
380 int (*resume)(struct sdhci_host *host);
381 int (*execute_freq_tuning)(struct sdhci_host *sdhci, u32 opcode);
382 int (*get_tuning_counter)(struct sdhci_host *sdhci);
383 int (*sd_error_stats)(struct sdhci_host *host, u32 int_status);
384 int (*dfs_gov_init)(struct sdhci_host *host);
385 void (*dfs_gov_exit)(struct sdhci_host *host);
386 unsigned long (*dfs_gov_get_target_freq)(struct sdhci_host *host,
387 struct devfreq_dev_status *dev_status);
388 int (*get_drive_strength)(struct sdhci_host *host,
389 unsigned int max_dtr, int host_drv, int card_drv);
390 void (*post_init)(struct sdhci_host *host);
391 void (*dump_host_cust_regs)(struct sdhci_host *host);
392 int (*get_max_tuning_loop_counter)(struct sdhci_host *sdhci);
393 void (*config_tap_delay)(struct sdhci_host *host, u8 option);
394 bool (*is_tuning_done)(struct sdhci_host *sdhci);
395 int (*validate_sd2_0)(struct sdhci_host *sdhci);
396 void (*get_max_pio_transfer_limits)(struct sdhci_host *sdhci);
399 static inline void sdhci_check_host_clock(struct sdhci_host *host)
401 if (!host->is_clk_on) {
402 if (host->ops->set_clock) {
403 if (host->mmc->ios.clock) {
404 host->ops->set_clock(host,
405 host->mmc->ios.clock);
407 host->ops->set_clock(host, 400000);
413 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
415 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
417 sdhci_check_host_clock(host);
418 if (unlikely(host->ops->write_l))
419 host->ops->write_l(host, val, reg);
421 writel(val, host->ioaddr + reg);
424 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
426 sdhci_check_host_clock(host);
427 if (unlikely(host->ops->write_w))
428 host->ops->write_w(host, val, reg);
430 writew(val, host->ioaddr + reg);
433 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
435 sdhci_check_host_clock(host);
436 if (unlikely(host->ops->write_b))
437 host->ops->write_b(host, val, reg);
439 writeb(val, host->ioaddr + reg);
442 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
444 sdhci_check_host_clock(host);
445 if (unlikely(host->ops->read_l))
446 return host->ops->read_l(host, reg);
448 return readl(host->ioaddr + reg);
451 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
453 sdhci_check_host_clock(host);
454 if (unlikely(host->ops->read_w))
455 return host->ops->read_w(host, reg);
457 return readw(host->ioaddr + reg);
460 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
462 sdhci_check_host_clock(host);
463 if (unlikely(host->ops->read_b))
464 return host->ops->read_b(host, reg);
466 return readb(host->ioaddr + reg);
471 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
473 sdhci_check_host_clock(host);
474 writel(val, host->ioaddr + reg);
477 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
479 sdhci_check_host_clock(host);
480 writew(val, host->ioaddr + reg);
483 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
485 sdhci_check_host_clock(host);
486 writeb(val, host->ioaddr + reg);
489 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
491 sdhci_check_host_clock(host);
492 return readl(host->ioaddr + reg);
495 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
497 sdhci_check_host_clock(host);
498 return readw(host->ioaddr + reg);
501 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
503 sdhci_check_host_clock(host);
504 return readb(host->ioaddr + reg);
507 #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
509 extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
511 extern void sdhci_free_host(struct sdhci_host *host);
513 static inline void *sdhci_priv(struct sdhci_host *host)
515 return (void *)host->private;
518 extern void sdhci_card_detect(struct sdhci_host *host);
519 extern int sdhci_add_host(struct sdhci_host *host);
520 extern void sdhci_runtime_forbid(struct sdhci_host *host);
521 extern void sdhci_remove_host(struct sdhci_host *host, int dead);
524 extern int sdhci_suspend_host(struct sdhci_host *host);
525 extern int sdhci_resume_host(struct sdhci_host *host);
526 extern void sdhci_enable_irq_wakeups(struct sdhci_host *host);
529 #ifdef CONFIG_PM_RUNTIME
530 extern int sdhci_runtime_suspend_host(struct sdhci_host *host);
531 extern int sdhci_runtime_resume_host(struct sdhci_host *host);
533 extern struct task_struct *suspend_task;
535 #endif /* __SDHCI_HW_H */