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