xref: /openbmc/u-boot/drivers/mmc/mmc-uclass.c (revision da206916)
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