1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
5 */
6
7 #include <common.h>
8 #include <mmc.h>
9 #include <dm.h>
10 #include <dm/device-internal.h>
11 #include <dm/lists.h>
12 #include "mmc_private.h"
13
dm_mmc_send_cmd(struct udevice * dev,struct mmc_cmd * cmd,struct mmc_data * data)14 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
15 struct mmc_data *data)
16 {
17 struct mmc *mmc = mmc_get_mmc_dev(dev);
18 struct dm_mmc_ops *ops = mmc_get_ops(dev);
19 int ret;
20
21 mmmc_trace_before_send(mmc, cmd);
22 if (ops->send_cmd)
23 ret = ops->send_cmd(dev, cmd, data);
24 else
25 ret = -ENOSYS;
26 mmmc_trace_after_send(mmc, cmd, ret);
27
28 return ret;
29 }
30
mmc_send_cmd(struct mmc * mmc,struct mmc_cmd * cmd,struct mmc_data * data)31 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
32 {
33 return dm_mmc_send_cmd(mmc->dev, cmd, data);
34 }
35
dm_mmc_set_ios(struct udevice * dev)36 int dm_mmc_set_ios(struct udevice *dev)
37 {
38 struct dm_mmc_ops *ops = mmc_get_ops(dev);
39
40 if (!ops->set_ios)
41 return -ENOSYS;
42 return ops->set_ios(dev);
43 }
44
mmc_set_ios(struct mmc * mmc)45 int mmc_set_ios(struct mmc *mmc)
46 {
47 return dm_mmc_set_ios(mmc->dev);
48 }
49
dm_mmc_wait_dat0(struct udevice * dev,int state,int timeout_us)50 int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout_us)
51 {
52 struct dm_mmc_ops *ops = mmc_get_ops(dev);
53
54 if (!ops->wait_dat0)
55 return -ENOSYS;
56 return ops->wait_dat0(dev, state, timeout_us);
57 }
58
mmc_wait_dat0(struct mmc * mmc,int state,int timeout_us)59 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us)
60 {
61 return dm_mmc_wait_dat0(mmc->dev, state, timeout_us);
62 }
63
dm_mmc_get_wp(struct udevice * dev)64 int dm_mmc_get_wp(struct udevice *dev)
65 {
66 struct dm_mmc_ops *ops = mmc_get_ops(dev);
67
68 if (!ops->get_wp)
69 return -ENOSYS;
70 return ops->get_wp(dev);
71 }
72
mmc_getwp(struct mmc * mmc)73 int mmc_getwp(struct mmc *mmc)
74 {
75 return dm_mmc_get_wp(mmc->dev);
76 }
77
dm_mmc_get_cd(struct udevice * dev)78 int dm_mmc_get_cd(struct udevice *dev)
79 {
80 struct dm_mmc_ops *ops = mmc_get_ops(dev);
81
82 if (!ops->get_cd)
83 return -ENOSYS;
84 return ops->get_cd(dev);
85 }
86
mmc_getcd(struct mmc * mmc)87 int mmc_getcd(struct mmc *mmc)
88 {
89 return dm_mmc_get_cd(mmc->dev);
90 }
91
92 #ifdef MMC_SUPPORTS_TUNING
dm_mmc_execute_tuning(struct udevice * dev,uint opcode)93 int dm_mmc_execute_tuning(struct udevice *dev, uint opcode)
94 {
95 struct dm_mmc_ops *ops = mmc_get_ops(dev);
96
97 if (!ops->execute_tuning)
98 return -ENOSYS;
99 return ops->execute_tuning(dev, opcode);
100 }
101
mmc_execute_tuning(struct mmc * mmc,uint opcode)102 int mmc_execute_tuning(struct mmc *mmc, uint opcode)
103 {
104 return dm_mmc_execute_tuning(mmc->dev, opcode);
105 }
106 #endif
107
108 #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
dm_mmc_set_enhanced_strobe(struct udevice * dev)109 int dm_mmc_set_enhanced_strobe(struct udevice *dev)
110 {
111 struct dm_mmc_ops *ops = mmc_get_ops(dev);
112
113 if (ops->set_enhanced_strobe)
114 return ops->set_enhanced_strobe(dev);
115
116 return -ENOTSUPP;
117 }
118
mmc_set_enhanced_strobe(struct mmc * mmc)119 int mmc_set_enhanced_strobe(struct mmc *mmc)
120 {
121 return dm_mmc_set_enhanced_strobe(mmc->dev);
122 }
123 #endif
124
dm_mmc_host_power_cycle(struct udevice * dev)125 int dm_mmc_host_power_cycle(struct udevice *dev)
126 {
127 struct dm_mmc_ops *ops = mmc_get_ops(dev);
128
129 if (ops->host_power_cycle)
130 return ops->host_power_cycle(dev);
131 return 0;
132 }
133
mmc_host_power_cycle(struct mmc * mmc)134 int mmc_host_power_cycle(struct mmc *mmc)
135 {
136 return dm_mmc_host_power_cycle(mmc->dev);
137 }
138
mmc_of_parse(struct udevice * dev,struct mmc_config * cfg)139 int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
140 {
141 int val;
142
143 val = dev_read_u32_default(dev, "bus-width", 1);
144
145 switch (val) {
146 case 0x8:
147 cfg->host_caps |= MMC_MODE_8BIT;
148 /* fall through */
149 case 0x4:
150 cfg->host_caps |= MMC_MODE_4BIT;
151 /* fall through */
152 case 0x1:
153 cfg->host_caps |= MMC_MODE_1BIT;
154 break;
155 default:
156 dev_err(dev, "Invalid \"bus-width\" value %u!\n", val);
157 return -EINVAL;
158 }
159
160 /* f_max is obtained from the optional "max-frequency" property */
161 dev_read_u32(dev, "max-frequency", &cfg->f_max);
162
163 if (dev_read_bool(dev, "cap-sd-highspeed"))
164 cfg->host_caps |= MMC_CAP(SD_HS);
165 if (dev_read_bool(dev, "cap-mmc-highspeed"))
166 cfg->host_caps |= MMC_CAP(MMC_HS);
167 if (dev_read_bool(dev, "sd-uhs-sdr12"))
168 cfg->host_caps |= MMC_CAP(UHS_SDR12);
169 if (dev_read_bool(dev, "sd-uhs-sdr25"))
170 cfg->host_caps |= MMC_CAP(UHS_SDR25);
171 if (dev_read_bool(dev, "sd-uhs-sdr50"))
172 cfg->host_caps |= MMC_CAP(UHS_SDR50);
173 if (dev_read_bool(dev, "sd-uhs-sdr104"))
174 cfg->host_caps |= MMC_CAP(UHS_SDR104);
175 if (dev_read_bool(dev, "sd-uhs-ddr50"))
176 cfg->host_caps |= MMC_CAP(UHS_DDR50);
177 if (dev_read_bool(dev, "mmc-ddr-1_8v"))
178 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
179 if (dev_read_bool(dev, "mmc-ddr-1_2v"))
180 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
181 if (dev_read_bool(dev, "mmc-hs200-1_8v"))
182 cfg->host_caps |= MMC_CAP(MMC_HS_200);
183 if (dev_read_bool(dev, "mmc-hs200-1_2v"))
184 cfg->host_caps |= MMC_CAP(MMC_HS_200);
185 if (dev_read_bool(dev, "mmc-hs400-1_8v"))
186 cfg->host_caps |= MMC_CAP(MMC_HS_400);
187 if (dev_read_bool(dev, "mmc-hs400-1_2v"))
188 cfg->host_caps |= MMC_CAP(MMC_HS_400);
189 if (dev_read_bool(dev, "mmc-hs400-enhanced-strobe"))
190 cfg->host_caps |= MMC_CAP(MMC_HS_400_ES);
191
192 if (dev_read_bool(dev, "non-removable")) {
193 cfg->host_caps |= MMC_CAP_NONREMOVABLE;
194 } else {
195 if (dev_read_bool(dev, "cd-inverted"))
196 cfg->host_caps |= MMC_CAP_CD_ACTIVE_HIGH;
197 if (dev_read_bool(dev, "broken-cd"))
198 cfg->host_caps |= MMC_CAP_NEEDS_POLL;
199 }
200
201 if (dev_read_bool(dev, "no-1-8-v")) {
202 cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 |
203 MMC_MODE_HS400 | MMC_MODE_HS400_ES);
204 }
205
206 return 0;
207 }
208
mmc_get_mmc_dev(struct udevice * dev)209 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
210 {
211 struct mmc_uclass_priv *upriv;
212
213 if (!device_active(dev))
214 return NULL;
215 upriv = dev_get_uclass_priv(dev);
216 return upriv->mmc;
217 }
218
219 #if CONFIG_IS_ENABLED(BLK)
find_mmc_device(int dev_num)220 struct mmc *find_mmc_device(int dev_num)
221 {
222 struct udevice *dev, *mmc_dev;
223 int ret;
224
225 ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
226
227 if (ret) {
228 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
229 printf("MMC Device %d not found\n", dev_num);
230 #endif
231 return NULL;
232 }
233
234 mmc_dev = dev_get_parent(dev);
235
236 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
237
238 return mmc;
239 }
240
get_mmc_num(void)241 int get_mmc_num(void)
242 {
243 return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
244 }
245
mmc_get_next_devnum(void)246 int mmc_get_next_devnum(void)
247 {
248 return blk_find_max_devnum(IF_TYPE_MMC);
249 }
250
mmc_get_blk_desc(struct mmc * mmc)251 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
252 {
253 struct blk_desc *desc;
254 struct udevice *dev;
255
256 device_find_first_child(mmc->dev, &dev);
257 if (!dev)
258 return NULL;
259 desc = dev_get_uclass_platdata(dev);
260
261 return desc;
262 }
263
mmc_do_preinit(void)264 void mmc_do_preinit(void)
265 {
266 struct udevice *dev;
267 struct uclass *uc;
268 int ret;
269
270 ret = uclass_get(UCLASS_MMC, &uc);
271 if (ret)
272 return;
273 uclass_foreach_dev(dev, uc) {
274 struct mmc *m = mmc_get_mmc_dev(dev);
275
276 if (!m)
277 continue;
278 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
279 mmc_set_preinit(m, 1);
280 #endif
281 if (m->preinit)
282 mmc_start_init(m);
283 }
284 }
285
286 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
print_mmc_devices(char separator)287 void print_mmc_devices(char separator)
288 {
289 struct udevice *dev;
290 char *mmc_type;
291 bool first = true;
292
293 for (uclass_first_device(UCLASS_MMC, &dev);
294 dev;
295 uclass_next_device(&dev), first = false) {
296 struct mmc *m = mmc_get_mmc_dev(dev);
297
298 if (!first) {
299 printf("%c", separator);
300 if (separator != '\n')
301 puts(" ");
302 }
303 if (m->has_init)
304 mmc_type = IS_SD(m) ? "SD" : "eMMC";
305 else
306 mmc_type = NULL;
307
308 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
309 if (mmc_type)
310 printf(" (%s)", mmc_type);
311 }
312
313 printf("\n");
314 }
315
316 #else
print_mmc_devices(char separator)317 void print_mmc_devices(char separator) { }
318 #endif
319
mmc_bind(struct udevice * dev,struct mmc * mmc,const struct mmc_config * cfg)320 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
321 {
322 struct blk_desc *bdesc;
323 struct udevice *bdev;
324 int ret, devnum = -1;
325
326 if (!mmc_get_ops(dev))
327 return -ENOSYS;
328 #ifndef CONFIG_SPL_BUILD
329 /* Use the fixed index with aliase node's index */
330 ret = dev_read_alias_seq(dev, &devnum);
331 debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
332 #endif
333
334 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
335 devnum, 512, 0, &bdev);
336 if (ret) {
337 debug("Cannot create block device\n");
338 return ret;
339 }
340 bdesc = dev_get_uclass_platdata(bdev);
341 mmc->cfg = cfg;
342 mmc->priv = dev;
343
344 /* the following chunk was from mmc_register() */
345
346 /* Setup dsr related values */
347 mmc->dsr_imp = 0;
348 mmc->dsr = 0xffffffff;
349 /* Setup the universal parts of the block interface just once */
350 bdesc->removable = 1;
351
352 /* setup initial part type */
353 bdesc->part_type = cfg->part_type;
354 mmc->dev = dev;
355
356 return 0;
357 }
358
mmc_unbind(struct udevice * dev)359 int mmc_unbind(struct udevice *dev)
360 {
361 struct udevice *bdev;
362
363 device_find_first_child(dev, &bdev);
364 if (bdev) {
365 device_remove(bdev, DM_REMOVE_NORMAL);
366 device_unbind(bdev);
367 }
368
369 return 0;
370 }
371
mmc_select_hwpart(struct udevice * bdev,int hwpart)372 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
373 {
374 struct udevice *mmc_dev = dev_get_parent(bdev);
375 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
376 struct blk_desc *desc = dev_get_uclass_platdata(bdev);
377 int ret;
378
379 if (desc->hwpart == hwpart)
380 return 0;
381
382 if (mmc->part_config == MMCPART_NOAVAILABLE)
383 return -EMEDIUMTYPE;
384
385 ret = mmc_switch_part(mmc, hwpart);
386 if (!ret)
387 blkcache_invalidate(desc->if_type, desc->devnum);
388
389 return ret;
390 }
391
mmc_blk_probe(struct udevice * dev)392 static int mmc_blk_probe(struct udevice *dev)
393 {
394 struct udevice *mmc_dev = dev_get_parent(dev);
395 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
396 struct mmc *mmc = upriv->mmc;
397 int ret;
398
399 ret = mmc_init(mmc);
400 if (ret) {
401 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
402 return ret;
403 }
404
405 return 0;
406 }
407
408 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
409 CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
410 CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
mmc_blk_remove(struct udevice * dev)411 static int mmc_blk_remove(struct udevice *dev)
412 {
413 struct udevice *mmc_dev = dev_get_parent(dev);
414 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
415 struct mmc *mmc = upriv->mmc;
416
417 return mmc_deinit(mmc);
418 }
419 #endif
420
421 static const struct blk_ops mmc_blk_ops = {
422 .read = mmc_bread,
423 #if CONFIG_IS_ENABLED(MMC_WRITE)
424 .write = mmc_bwrite,
425 .erase = mmc_berase,
426 #endif
427 .select_hwpart = mmc_select_hwpart,
428 };
429
430 U_BOOT_DRIVER(mmc_blk) = {
431 .name = "mmc_blk",
432 .id = UCLASS_BLK,
433 .ops = &mmc_blk_ops,
434 .probe = mmc_blk_probe,
435 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
436 CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
437 CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
438 .remove = mmc_blk_remove,
439 .flags = DM_FLAG_OS_PREPARE,
440 #endif
441 };
442 #endif /* CONFIG_BLK */
443
444
445 UCLASS_DRIVER(mmc) = {
446 .id = UCLASS_MMC,
447 .name = "mmc",
448 .flags = DM_UC_FLAG_SEQ_ALIAS,
449 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
450 };
451