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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