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
170 return 0;
171 }
172
mmc_get_mmc_dev(struct udevice * dev)173 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
174 {
175 struct mmc_uclass_priv *upriv;
176
177 if (!device_active(dev))
178 return NULL;
179 upriv = dev_get_uclass_priv(dev);
180 return upriv->mmc;
181 }
182
183 #if CONFIG_IS_ENABLED(BLK)
find_mmc_device(int dev_num)184 struct mmc *find_mmc_device(int dev_num)
185 {
186 struct udevice *dev, *mmc_dev;
187 int ret;
188
189 ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
190
191 if (ret) {
192 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
193 printf("MMC Device %d not found\n", dev_num);
194 #endif
195 return NULL;
196 }
197
198 mmc_dev = dev_get_parent(dev);
199
200 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
201
202 return mmc;
203 }
204
get_mmc_num(void)205 int get_mmc_num(void)
206 {
207 return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
208 }
209
mmc_get_next_devnum(void)210 int mmc_get_next_devnum(void)
211 {
212 return blk_find_max_devnum(IF_TYPE_MMC);
213 }
214
mmc_get_blk_desc(struct mmc * mmc)215 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
216 {
217 struct blk_desc *desc;
218 struct udevice *dev;
219
220 device_find_first_child(mmc->dev, &dev);
221 if (!dev)
222 return NULL;
223 desc = dev_get_uclass_platdata(dev);
224
225 return desc;
226 }
227
mmc_do_preinit(void)228 void mmc_do_preinit(void)
229 {
230 struct udevice *dev;
231 struct uclass *uc;
232 int ret;
233
234 ret = uclass_get(UCLASS_MMC, &uc);
235 if (ret)
236 return;
237 uclass_foreach_dev(dev, uc) {
238 struct mmc *m = mmc_get_mmc_dev(dev);
239
240 if (!m)
241 continue;
242 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
243 mmc_set_preinit(m, 1);
244 #endif
245 if (m->preinit)
246 mmc_start_init(m);
247 }
248 }
249
250 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
print_mmc_devices(char separator)251 void print_mmc_devices(char separator)
252 {
253 struct udevice *dev;
254 char *mmc_type;
255 bool first = true;
256
257 for (uclass_first_device(UCLASS_MMC, &dev);
258 dev;
259 uclass_next_device(&dev), first = false) {
260 struct mmc *m = mmc_get_mmc_dev(dev);
261
262 if (!first) {
263 printf("%c", separator);
264 if (separator != '\n')
265 puts(" ");
266 }
267 if (m->has_init)
268 mmc_type = IS_SD(m) ? "SD" : "eMMC";
269 else
270 mmc_type = NULL;
271
272 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
273 if (mmc_type)
274 printf(" (%s)", mmc_type);
275 }
276
277 printf("\n");
278 }
279
280 #else
print_mmc_devices(char separator)281 void print_mmc_devices(char separator) { }
282 #endif
283
mmc_bind(struct udevice * dev,struct mmc * mmc,const struct mmc_config * cfg)284 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
285 {
286 struct blk_desc *bdesc;
287 struct udevice *bdev;
288 int ret, devnum = -1;
289
290 if (!mmc_get_ops(dev))
291 return -ENOSYS;
292 #ifndef CONFIG_SPL_BUILD
293 /* Use the fixed index with aliase node's index */
294 ret = dev_read_alias_seq(dev, &devnum);
295 debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
296 #endif
297
298 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
299 devnum, 512, 0, &bdev);
300 if (ret) {
301 debug("Cannot create block device\n");
302 return ret;
303 }
304 bdesc = dev_get_uclass_platdata(bdev);
305 mmc->cfg = cfg;
306 mmc->priv = dev;
307
308 /* the following chunk was from mmc_register() */
309
310 /* Setup dsr related values */
311 mmc->dsr_imp = 0;
312 mmc->dsr = 0xffffffff;
313 /* Setup the universal parts of the block interface just once */
314 bdesc->removable = 1;
315
316 /* setup initial part type */
317 bdesc->part_type = cfg->part_type;
318 mmc->dev = dev;
319
320 return 0;
321 }
322
mmc_unbind(struct udevice * dev)323 int mmc_unbind(struct udevice *dev)
324 {
325 struct udevice *bdev;
326
327 device_find_first_child(dev, &bdev);
328 if (bdev) {
329 device_remove(bdev, DM_REMOVE_NORMAL);
330 device_unbind(bdev);
331 }
332
333 return 0;
334 }
335
mmc_select_hwpart(struct udevice * bdev,int hwpart)336 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
337 {
338 struct udevice *mmc_dev = dev_get_parent(bdev);
339 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
340 struct blk_desc *desc = dev_get_uclass_platdata(bdev);
341
342 if (desc->hwpart == hwpart)
343 return 0;
344
345 if (mmc->part_config == MMCPART_NOAVAILABLE)
346 return -EMEDIUMTYPE;
347
348 return mmc_switch_part(mmc, hwpart);
349 }
350
mmc_blk_probe(struct udevice * dev)351 static int mmc_blk_probe(struct udevice *dev)
352 {
353 struct udevice *mmc_dev = dev_get_parent(dev);
354 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
355 struct mmc *mmc = upriv->mmc;
356 int ret;
357
358 ret = mmc_init(mmc);
359 if (ret) {
360 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
361 return ret;
362 }
363
364 return 0;
365 }
366
367 static const struct blk_ops mmc_blk_ops = {
368 .read = mmc_bread,
369 #if CONFIG_IS_ENABLED(MMC_WRITE)
370 .write = mmc_bwrite,
371 .erase = mmc_berase,
372 #endif
373 .select_hwpart = mmc_select_hwpart,
374 };
375
376 U_BOOT_DRIVER(mmc_blk) = {
377 .name = "mmc_blk",
378 .id = UCLASS_BLK,
379 .ops = &mmc_blk_ops,
380 .probe = mmc_blk_probe,
381 };
382 #endif /* CONFIG_BLK */
383
384 U_BOOT_DRIVER(mmc) = {
385 .name = "mmc",
386 .id = UCLASS_MMC,
387 };
388
389 UCLASS_DRIVER(mmc) = {
390 .id = UCLASS_MMC,
391 .name = "mmc",
392 .flags = DM_UC_FLAG_SEQ_ALIAS,
393 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
394 };
395