1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * MMCIF driver.
4 *
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 */
7
8 #include <config.h>
9 #include <common.h>
10 #include <watchdog.h>
11 #include <command.h>
12 #include <mmc.h>
13 #include <clk.h>
14 #include <dm.h>
15 #include <malloc.h>
16 #include <linux/errno.h>
17 #include <linux/compat.h>
18 #include <linux/io.h>
19 #include <linux/sizes.h>
20 #include "sh_mmcif.h"
21
22 #define DRIVER_NAME "sh_mmcif"
23
sh_mmcif_intr(void * dev_id)24 static int sh_mmcif_intr(void *dev_id)
25 {
26 struct sh_mmcif_host *host = dev_id;
27 u32 state = 0;
28
29 state = sh_mmcif_read(&host->regs->ce_int);
30 state &= sh_mmcif_read(&host->regs->ce_int_mask);
31
32 if (state & INT_RBSYE) {
33 sh_mmcif_write(~(INT_RBSYE | INT_CRSPE), &host->regs->ce_int);
34 sh_mmcif_bitclr(MASK_MRBSYE, &host->regs->ce_int_mask);
35 goto end;
36 } else if (state & INT_CRSPE) {
37 sh_mmcif_write(~INT_CRSPE, &host->regs->ce_int);
38 sh_mmcif_bitclr(MASK_MCRSPE, &host->regs->ce_int_mask);
39 /* one more interrupt (INT_RBSYE) */
40 if (sh_mmcif_read(&host->regs->ce_cmd_set) & CMD_SET_RBSY)
41 return -EAGAIN;
42 goto end;
43 } else if (state & INT_BUFREN) {
44 sh_mmcif_write(~INT_BUFREN, &host->regs->ce_int);
45 sh_mmcif_bitclr(MASK_MBUFREN, &host->regs->ce_int_mask);
46 goto end;
47 } else if (state & INT_BUFWEN) {
48 sh_mmcif_write(~INT_BUFWEN, &host->regs->ce_int);
49 sh_mmcif_bitclr(MASK_MBUFWEN, &host->regs->ce_int_mask);
50 goto end;
51 } else if (state & INT_CMD12DRE) {
52 sh_mmcif_write(~(INT_CMD12DRE | INT_CMD12RBE | INT_CMD12CRE |
53 INT_BUFRE), &host->regs->ce_int);
54 sh_mmcif_bitclr(MASK_MCMD12DRE, &host->regs->ce_int_mask);
55 goto end;
56 } else if (state & INT_BUFRE) {
57 sh_mmcif_write(~INT_BUFRE, &host->regs->ce_int);
58 sh_mmcif_bitclr(MASK_MBUFRE, &host->regs->ce_int_mask);
59 goto end;
60 } else if (state & INT_DTRANE) {
61 sh_mmcif_write(~INT_DTRANE, &host->regs->ce_int);
62 sh_mmcif_bitclr(MASK_MDTRANE, &host->regs->ce_int_mask);
63 goto end;
64 } else if (state & INT_CMD12RBE) {
65 sh_mmcif_write(~(INT_CMD12RBE | INT_CMD12CRE),
66 &host->regs->ce_int);
67 sh_mmcif_bitclr(MASK_MCMD12RBE, &host->regs->ce_int_mask);
68 goto end;
69 } else if (state & INT_ERR_STS) {
70 /* err interrupts */
71 sh_mmcif_write(~state, &host->regs->ce_int);
72 sh_mmcif_bitclr(state, &host->regs->ce_int_mask);
73 goto err;
74 } else
75 return -EAGAIN;
76
77 err:
78 host->sd_error = 1;
79 debug("%s: int err state = %08x\n", DRIVER_NAME, state);
80 end:
81 host->wait_int = 1;
82 return 0;
83 }
84
mmcif_wait_interrupt_flag(struct sh_mmcif_host * host)85 static int mmcif_wait_interrupt_flag(struct sh_mmcif_host *host)
86 {
87 int timeout = 10000000;
88
89 while (1) {
90 timeout--;
91 if (timeout < 0) {
92 printf("timeout\n");
93 return 0;
94 }
95
96 if (!sh_mmcif_intr(host))
97 break;
98
99 udelay(1); /* 1 usec */
100 }
101
102 return 1; /* Return value: NOT 0 = complete waiting */
103 }
104
sh_mmcif_clock_control(struct sh_mmcif_host * host,unsigned int clk)105 static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
106 {
107 sh_mmcif_bitclr(CLK_ENABLE, &host->regs->ce_clk_ctrl);
108 sh_mmcif_bitclr(CLK_CLEAR, &host->regs->ce_clk_ctrl);
109
110 if (!clk)
111 return;
112
113 if (clk == CLKDEV_EMMC_DATA)
114 sh_mmcif_bitset(CLK_PCLK, &host->regs->ce_clk_ctrl);
115 else
116 sh_mmcif_bitset((fls(DIV_ROUND_UP(host->clk,
117 clk) - 1) - 1) << 16,
118 &host->regs->ce_clk_ctrl);
119 sh_mmcif_bitset(CLK_ENABLE, &host->regs->ce_clk_ctrl);
120 }
121
sh_mmcif_sync_reset(struct sh_mmcif_host * host)122 static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
123 {
124 u32 tmp;
125
126 tmp = sh_mmcif_read(&host->regs->ce_clk_ctrl) & (CLK_ENABLE |
127 CLK_CLEAR);
128
129 sh_mmcif_write(SOFT_RST_ON, &host->regs->ce_version);
130 sh_mmcif_write(SOFT_RST_OFF, &host->regs->ce_version);
131 sh_mmcif_bitset(tmp | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | SCCSTO_29,
132 &host->regs->ce_clk_ctrl);
133 /* byte swap on */
134 sh_mmcif_bitset(BUF_ACC_ATYP, &host->regs->ce_buf_acc);
135 }
136
sh_mmcif_error_manage(struct sh_mmcif_host * host)137 static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
138 {
139 u32 state1, state2;
140 int ret, timeout = 10000000;
141
142 host->sd_error = 0;
143 host->wait_int = 0;
144
145 state1 = sh_mmcif_read(&host->regs->ce_host_sts1);
146 state2 = sh_mmcif_read(&host->regs->ce_host_sts2);
147 debug("%s: ERR HOST_STS1 = %08x\n", \
148 DRIVER_NAME, sh_mmcif_read(&host->regs->ce_host_sts1));
149 debug("%s: ERR HOST_STS2 = %08x\n", \
150 DRIVER_NAME, sh_mmcif_read(&host->regs->ce_host_sts2));
151
152 if (state1 & STS1_CMDSEQ) {
153 debug("%s: Forced end of command sequence\n", DRIVER_NAME);
154 sh_mmcif_bitset(CMD_CTRL_BREAK, &host->regs->ce_cmd_ctrl);
155 sh_mmcif_bitset(~CMD_CTRL_BREAK, &host->regs->ce_cmd_ctrl);
156 while (1) {
157 timeout--;
158 if (timeout < 0) {
159 printf(DRIVER_NAME": Forceed end of " \
160 "command sequence timeout err\n");
161 return -EILSEQ;
162 }
163 if (!(sh_mmcif_read(&host->regs->ce_host_sts1)
164 & STS1_CMDSEQ))
165 break;
166 }
167 sh_mmcif_sync_reset(host);
168 return -EILSEQ;
169 }
170
171 if (state2 & STS2_CRC_ERR)
172 ret = -EILSEQ;
173 else if (state2 & STS2_TIMEOUT_ERR)
174 ret = -ETIMEDOUT;
175 else
176 ret = -EILSEQ;
177 return ret;
178 }
179
sh_mmcif_single_read(struct sh_mmcif_host * host,struct mmc_data * data)180 static int sh_mmcif_single_read(struct sh_mmcif_host *host,
181 struct mmc_data *data)
182 {
183 long time;
184 u32 blocksize, i;
185 unsigned long *p = (unsigned long *)data->dest;
186
187 if ((unsigned long)p & 0x00000001) {
188 printf("%s: The data pointer is unaligned.", __func__);
189 return -EIO;
190 }
191
192 host->wait_int = 0;
193
194 /* buf read enable */
195 sh_mmcif_bitset(MASK_MBUFREN, &host->regs->ce_int_mask);
196 time = mmcif_wait_interrupt_flag(host);
197 if (time == 0 || host->sd_error != 0)
198 return sh_mmcif_error_manage(host);
199
200 host->wait_int = 0;
201 blocksize = (BLOCK_SIZE_MASK &
202 sh_mmcif_read(&host->regs->ce_block_set)) + 3;
203 for (i = 0; i < blocksize / 4; i++)
204 *p++ = sh_mmcif_read(&host->regs->ce_data);
205
206 /* buffer read end */
207 sh_mmcif_bitset(MASK_MBUFRE, &host->regs->ce_int_mask);
208 time = mmcif_wait_interrupt_flag(host);
209 if (time == 0 || host->sd_error != 0)
210 return sh_mmcif_error_manage(host);
211
212 host->wait_int = 0;
213 return 0;
214 }
215
sh_mmcif_multi_read(struct sh_mmcif_host * host,struct mmc_data * data)216 static int sh_mmcif_multi_read(struct sh_mmcif_host *host,
217 struct mmc_data *data)
218 {
219 long time;
220 u32 blocksize, i, j;
221 unsigned long *p = (unsigned long *)data->dest;
222
223 if ((unsigned long)p & 0x00000001) {
224 printf("%s: The data pointer is unaligned.", __func__);
225 return -EIO;
226 }
227
228 host->wait_int = 0;
229 blocksize = BLOCK_SIZE_MASK & sh_mmcif_read(&host->regs->ce_block_set);
230 for (j = 0; j < data->blocks; j++) {
231 sh_mmcif_bitset(MASK_MBUFREN, &host->regs->ce_int_mask);
232 time = mmcif_wait_interrupt_flag(host);
233 if (time == 0 || host->sd_error != 0)
234 return sh_mmcif_error_manage(host);
235
236 host->wait_int = 0;
237 for (i = 0; i < blocksize / 4; i++)
238 *p++ = sh_mmcif_read(&host->regs->ce_data);
239
240 WATCHDOG_RESET();
241 }
242 return 0;
243 }
244
sh_mmcif_single_write(struct sh_mmcif_host * host,struct mmc_data * data)245 static int sh_mmcif_single_write(struct sh_mmcif_host *host,
246 struct mmc_data *data)
247 {
248 long time;
249 u32 blocksize, i;
250 const unsigned long *p = (unsigned long *)data->dest;
251
252 if ((unsigned long)p & 0x00000001) {
253 printf("%s: The data pointer is unaligned.", __func__);
254 return -EIO;
255 }
256
257 host->wait_int = 0;
258 sh_mmcif_bitset(MASK_MBUFWEN, &host->regs->ce_int_mask);
259
260 time = mmcif_wait_interrupt_flag(host);
261 if (time == 0 || host->sd_error != 0)
262 return sh_mmcif_error_manage(host);
263
264 host->wait_int = 0;
265 blocksize = (BLOCK_SIZE_MASK &
266 sh_mmcif_read(&host->regs->ce_block_set)) + 3;
267 for (i = 0; i < blocksize / 4; i++)
268 sh_mmcif_write(*p++, &host->regs->ce_data);
269
270 /* buffer write end */
271 sh_mmcif_bitset(MASK_MDTRANE, &host->regs->ce_int_mask);
272
273 time = mmcif_wait_interrupt_flag(host);
274 if (time == 0 || host->sd_error != 0)
275 return sh_mmcif_error_manage(host);
276
277 host->wait_int = 0;
278 return 0;
279 }
280
sh_mmcif_multi_write(struct sh_mmcif_host * host,struct mmc_data * data)281 static int sh_mmcif_multi_write(struct sh_mmcif_host *host,
282 struct mmc_data *data)
283 {
284 long time;
285 u32 i, j, blocksize;
286 const unsigned long *p = (unsigned long *)data->dest;
287
288 if ((unsigned long)p & 0x00000001) {
289 printf("%s: The data pointer is unaligned.", __func__);
290 return -EIO;
291 }
292
293 host->wait_int = 0;
294 blocksize = BLOCK_SIZE_MASK & sh_mmcif_read(&host->regs->ce_block_set);
295 for (j = 0; j < data->blocks; j++) {
296 sh_mmcif_bitset(MASK_MBUFWEN, &host->regs->ce_int_mask);
297
298 time = mmcif_wait_interrupt_flag(host);
299
300 if (time == 0 || host->sd_error != 0)
301 return sh_mmcif_error_manage(host);
302
303 host->wait_int = 0;
304 for (i = 0; i < blocksize / 4; i++)
305 sh_mmcif_write(*p++, &host->regs->ce_data);
306
307 WATCHDOG_RESET();
308 }
309 return 0;
310 }
311
sh_mmcif_get_response(struct sh_mmcif_host * host,struct mmc_cmd * cmd)312 static void sh_mmcif_get_response(struct sh_mmcif_host *host,
313 struct mmc_cmd *cmd)
314 {
315 if (cmd->resp_type & MMC_RSP_136) {
316 cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp3);
317 cmd->response[1] = sh_mmcif_read(&host->regs->ce_resp2);
318 cmd->response[2] = sh_mmcif_read(&host->regs->ce_resp1);
319 cmd->response[3] = sh_mmcif_read(&host->regs->ce_resp0);
320 debug(" RESP %08x, %08x, %08x, %08x\n", cmd->response[0],
321 cmd->response[1], cmd->response[2], cmd->response[3]);
322 } else {
323 cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp0);
324 }
325 }
326
sh_mmcif_get_cmd12response(struct sh_mmcif_host * host,struct mmc_cmd * cmd)327 static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host,
328 struct mmc_cmd *cmd)
329 {
330 cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp_cmd12);
331 }
332
sh_mmcif_set_cmd(struct sh_mmcif_host * host,struct mmc_data * data,struct mmc_cmd * cmd)333 static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
334 struct mmc_data *data, struct mmc_cmd *cmd)
335 {
336 u32 tmp = 0;
337 u32 opc = cmd->cmdidx;
338
339 /* Response Type check */
340 switch (cmd->resp_type) {
341 case MMC_RSP_NONE:
342 tmp |= CMD_SET_RTYP_NO;
343 break;
344 case MMC_RSP_R1:
345 case MMC_RSP_R1b:
346 case MMC_RSP_R3:
347 tmp |= CMD_SET_RTYP_6B;
348 break;
349 case MMC_RSP_R2:
350 tmp |= CMD_SET_RTYP_17B;
351 break;
352 default:
353 printf(DRIVER_NAME": Not support type response.\n");
354 break;
355 }
356
357 /* RBSY */
358 if (opc == MMC_CMD_SWITCH)
359 tmp |= CMD_SET_RBSY;
360
361 /* WDAT / DATW */
362 if (host->data) {
363 tmp |= CMD_SET_WDAT;
364 switch (host->bus_width) {
365 case MMC_BUS_WIDTH_1:
366 tmp |= CMD_SET_DATW_1;
367 break;
368 case MMC_BUS_WIDTH_4:
369 tmp |= CMD_SET_DATW_4;
370 break;
371 case MMC_BUS_WIDTH_8:
372 tmp |= CMD_SET_DATW_8;
373 break;
374 default:
375 printf(DRIVER_NAME": Not support bus width.\n");
376 break;
377 }
378 }
379 /* DWEN */
380 if (opc == MMC_CMD_WRITE_SINGLE_BLOCK ||
381 opc == MMC_CMD_WRITE_MULTIPLE_BLOCK)
382 tmp |= CMD_SET_DWEN;
383 /* CMLTE/CMD12EN */
384 if (opc == MMC_CMD_READ_MULTIPLE_BLOCK ||
385 opc == MMC_CMD_WRITE_MULTIPLE_BLOCK) {
386 tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN;
387 sh_mmcif_bitset(data->blocks << 16, &host->regs->ce_block_set);
388 }
389 /* RIDXC[1:0] check bits */
390 if (opc == MMC_CMD_SEND_OP_COND || opc == MMC_CMD_ALL_SEND_CID ||
391 opc == MMC_CMD_SEND_CSD || opc == MMC_CMD_SEND_CID)
392 tmp |= CMD_SET_RIDXC_BITS;
393 /* RCRC7C[1:0] check bits */
394 if (opc == MMC_CMD_SEND_OP_COND)
395 tmp |= CMD_SET_CRC7C_BITS;
396 /* RCRC7C[1:0] internal CRC7 */
397 if (opc == MMC_CMD_ALL_SEND_CID ||
398 opc == MMC_CMD_SEND_CSD || opc == MMC_CMD_SEND_CID)
399 tmp |= CMD_SET_CRC7C_INTERNAL;
400
401 return opc = ((opc << 24) | tmp);
402 }
403
sh_mmcif_data_trans(struct sh_mmcif_host * host,struct mmc_data * data,u16 opc)404 static u32 sh_mmcif_data_trans(struct sh_mmcif_host *host,
405 struct mmc_data *data, u16 opc)
406 {
407 u32 ret;
408
409 switch (opc) {
410 case MMC_CMD_READ_MULTIPLE_BLOCK:
411 ret = sh_mmcif_multi_read(host, data);
412 break;
413 case MMC_CMD_WRITE_MULTIPLE_BLOCK:
414 ret = sh_mmcif_multi_write(host, data);
415 break;
416 case MMC_CMD_WRITE_SINGLE_BLOCK:
417 ret = sh_mmcif_single_write(host, data);
418 break;
419 case MMC_CMD_READ_SINGLE_BLOCK:
420 case MMC_CMD_SEND_EXT_CSD:
421 ret = sh_mmcif_single_read(host, data);
422 break;
423 default:
424 printf(DRIVER_NAME": NOT SUPPORT CMD = d'%08d\n", opc);
425 ret = -EINVAL;
426 break;
427 }
428 return ret;
429 }
430
sh_mmcif_start_cmd(struct sh_mmcif_host * host,struct mmc_data * data,struct mmc_cmd * cmd)431 static int sh_mmcif_start_cmd(struct sh_mmcif_host *host,
432 struct mmc_data *data, struct mmc_cmd *cmd)
433 {
434 long time;
435 int ret = 0, mask = 0;
436 u32 opc = cmd->cmdidx;
437
438 if (opc == MMC_CMD_STOP_TRANSMISSION) {
439 /* MMCIF sends the STOP command automatically */
440 if (host->last_cmd == MMC_CMD_READ_MULTIPLE_BLOCK)
441 sh_mmcif_bitset(MASK_MCMD12DRE,
442 &host->regs->ce_int_mask);
443 else
444 sh_mmcif_bitset(MASK_MCMD12RBE,
445 &host->regs->ce_int_mask);
446
447 time = mmcif_wait_interrupt_flag(host);
448 if (time == 0 || host->sd_error != 0)
449 return sh_mmcif_error_manage(host);
450
451 sh_mmcif_get_cmd12response(host, cmd);
452 return 0;
453 }
454 if (opc == MMC_CMD_SWITCH)
455 mask = MASK_MRBSYE;
456 else
457 mask = MASK_MCRSPE;
458
459 mask |= MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR |
460 MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR |
461 MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO |
462 MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO;
463
464 if (host->data) {
465 sh_mmcif_write(0, &host->regs->ce_block_set);
466 sh_mmcif_write(data->blocksize, &host->regs->ce_block_set);
467 }
468 opc = sh_mmcif_set_cmd(host, data, cmd);
469
470 sh_mmcif_write(INT_START_MAGIC, &host->regs->ce_int);
471 sh_mmcif_write(mask, &host->regs->ce_int_mask);
472
473 debug("CMD%d ARG:%08x\n", cmd->cmdidx, cmd->cmdarg);
474 /* set arg */
475 sh_mmcif_write(cmd->cmdarg, &host->regs->ce_arg);
476 host->wait_int = 0;
477 /* set cmd */
478 sh_mmcif_write(opc, &host->regs->ce_cmd_set);
479
480 time = mmcif_wait_interrupt_flag(host);
481 if (time == 0)
482 return sh_mmcif_error_manage(host);
483
484 if (host->sd_error) {
485 switch (cmd->cmdidx) {
486 case MMC_CMD_ALL_SEND_CID:
487 case MMC_CMD_SELECT_CARD:
488 case MMC_CMD_APP_CMD:
489 ret = -ETIMEDOUT;
490 break;
491 default:
492 printf(DRIVER_NAME": Cmd(d'%d) err\n", cmd->cmdidx);
493 ret = sh_mmcif_error_manage(host);
494 break;
495 }
496 host->sd_error = 0;
497 host->wait_int = 0;
498 return ret;
499 }
500
501 /* if no response */
502 if (!(opc & 0x00C00000))
503 return 0;
504
505 if (host->wait_int == 1) {
506 sh_mmcif_get_response(host, cmd);
507 host->wait_int = 0;
508 }
509 if (host->data)
510 ret = sh_mmcif_data_trans(host, data, cmd->cmdidx);
511 host->last_cmd = cmd->cmdidx;
512
513 return ret;
514 }
515
sh_mmcif_send_cmd_common(struct sh_mmcif_host * host,struct mmc_cmd * cmd,struct mmc_data * data)516 static int sh_mmcif_send_cmd_common(struct sh_mmcif_host *host,
517 struct mmc_cmd *cmd, struct mmc_data *data)
518 {
519 int ret;
520
521 WATCHDOG_RESET();
522
523 switch (cmd->cmdidx) {
524 case MMC_CMD_APP_CMD:
525 return -ETIMEDOUT;
526 case MMC_CMD_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
527 if (data)
528 /* ext_csd */
529 break;
530 else
531 /* send_if_cond cmd (not support) */
532 return -ETIMEDOUT;
533 default:
534 break;
535 }
536 host->sd_error = 0;
537 host->data = data;
538 ret = sh_mmcif_start_cmd(host, data, cmd);
539 host->data = NULL;
540
541 return ret;
542 }
543
sh_mmcif_set_ios_common(struct sh_mmcif_host * host,struct mmc * mmc)544 static int sh_mmcif_set_ios_common(struct sh_mmcif_host *host, struct mmc *mmc)
545 {
546 if (mmc->clock)
547 sh_mmcif_clock_control(host, mmc->clock);
548
549 if (mmc->bus_width == 8)
550 host->bus_width = MMC_BUS_WIDTH_8;
551 else if (mmc->bus_width == 4)
552 host->bus_width = MMC_BUS_WIDTH_4;
553 else
554 host->bus_width = MMC_BUS_WIDTH_1;
555
556 debug("clock = %d, buswidth = %d\n", mmc->clock, mmc->bus_width);
557
558 return 0;
559 }
560
sh_mmcif_initialize_common(struct sh_mmcif_host * host)561 static int sh_mmcif_initialize_common(struct sh_mmcif_host *host)
562 {
563 sh_mmcif_sync_reset(host);
564 sh_mmcif_write(MASK_ALL, &host->regs->ce_int_mask);
565 return 0;
566 }
567
568 #ifndef CONFIG_DM_MMC
mmc_priv(struct mmc * mmc)569 static void *mmc_priv(struct mmc *mmc)
570 {
571 return (void *)mmc->priv;
572 }
573
sh_mmcif_send_cmd(struct mmc * mmc,struct mmc_cmd * cmd,struct mmc_data * data)574 static int sh_mmcif_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
575 struct mmc_data *data)
576 {
577 struct sh_mmcif_host *host = mmc_priv(mmc);
578
579 return sh_mmcif_send_cmd_common(host, cmd, data);
580 }
581
sh_mmcif_set_ios(struct mmc * mmc)582 static int sh_mmcif_set_ios(struct mmc *mmc)
583 {
584 struct sh_mmcif_host *host = mmc_priv(mmc);
585
586 return sh_mmcif_set_ios_common(host, mmc);
587 }
588
sh_mmcif_initialize(struct mmc * mmc)589 static int sh_mmcif_initialize(struct mmc *mmc)
590 {
591 struct sh_mmcif_host *host = mmc_priv(mmc);
592
593 return sh_mmcif_initialize_common(host);
594 }
595
596 static const struct mmc_ops sh_mmcif_ops = {
597 .send_cmd = sh_mmcif_send_cmd,
598 .set_ios = sh_mmcif_set_ios,
599 .init = sh_mmcif_initialize,
600 };
601
602 static struct mmc_config sh_mmcif_cfg = {
603 .name = DRIVER_NAME,
604 .ops = &sh_mmcif_ops,
605 .host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT |
606 MMC_MODE_8BIT,
607 .voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
608 .b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT,
609 };
610
mmcif_mmc_init(void)611 int mmcif_mmc_init(void)
612 {
613 struct mmc *mmc;
614 struct sh_mmcif_host *host = NULL;
615
616 host = malloc(sizeof(struct sh_mmcif_host));
617 if (!host)
618 return -ENOMEM;
619 memset(host, 0, sizeof(*host));
620
621 host->regs = (struct sh_mmcif_regs *)CONFIG_SH_MMCIF_ADDR;
622 host->clk = CONFIG_SH_MMCIF_CLK;
623
624 sh_mmcif_cfg.f_min = MMC_CLK_DIV_MIN(host->clk);
625 sh_mmcif_cfg.f_max = MMC_CLK_DIV_MAX(host->clk);
626
627 mmc = mmc_create(&sh_mmcif_cfg, host);
628 if (mmc == NULL) {
629 free(host);
630 return -ENOMEM;
631 }
632
633 return 0;
634 }
635
636 #else
637 struct sh_mmcif_plat {
638 struct mmc_config cfg;
639 struct mmc mmc;
640 };
641
sh_mmcif_dm_send_cmd(struct udevice * dev,struct mmc_cmd * cmd,struct mmc_data * data)642 int sh_mmcif_dm_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
643 struct mmc_data *data)
644 {
645 struct sh_mmcif_host *host = dev_get_priv(dev);
646
647 return sh_mmcif_send_cmd_common(host, cmd, data);
648 }
649
sh_mmcif_dm_set_ios(struct udevice * dev)650 int sh_mmcif_dm_set_ios(struct udevice *dev)
651 {
652 struct sh_mmcif_host *host = dev_get_priv(dev);
653 struct mmc *mmc = mmc_get_mmc_dev(dev);
654
655 return sh_mmcif_set_ios_common(host, mmc);
656 }
657
658 static const struct dm_mmc_ops sh_mmcif_dm_ops = {
659 .send_cmd = sh_mmcif_dm_send_cmd,
660 .set_ios = sh_mmcif_dm_set_ios,
661 };
662
sh_mmcif_dm_bind(struct udevice * dev)663 static int sh_mmcif_dm_bind(struct udevice *dev)
664 {
665 struct sh_mmcif_plat *plat = dev_get_platdata(dev);
666
667 return mmc_bind(dev, &plat->mmc, &plat->cfg);
668 }
669
sh_mmcif_dm_probe(struct udevice * dev)670 static int sh_mmcif_dm_probe(struct udevice *dev)
671 {
672 struct sh_mmcif_plat *plat = dev_get_platdata(dev);
673 struct sh_mmcif_host *host = dev_get_priv(dev);
674 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
675 struct clk sh_mmcif_clk;
676 fdt_addr_t base;
677 int ret;
678
679 base = devfdt_get_addr(dev);
680 if (base == FDT_ADDR_T_NONE)
681 return -EINVAL;
682
683 host->regs = (struct sh_mmcif_regs *)devm_ioremap(dev, base, SZ_2K);
684 if (!host->regs)
685 return -ENOMEM;
686
687 ret = clk_get_by_index(dev, 0, &sh_mmcif_clk);
688 if (ret) {
689 debug("failed to get clock, ret=%d\n", ret);
690 return ret;
691 }
692
693 ret = clk_enable(&sh_mmcif_clk);
694 if (ret) {
695 debug("failed to enable clock, ret=%d\n", ret);
696 return ret;
697 }
698
699 host->clk = clk_get_rate(&sh_mmcif_clk);
700
701 plat->cfg.name = dev->name;
702 plat->cfg.host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS;
703
704 switch (fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "bus-width",
705 1)) {
706 case 8:
707 plat->cfg.host_caps |= MMC_MODE_8BIT;
708 break;
709 case 4:
710 plat->cfg.host_caps |= MMC_MODE_4BIT;
711 break;
712 case 1:
713 break;
714 default:
715 dev_err(dev, "Invalid \"bus-width\" value\n");
716 return -EINVAL;
717 }
718
719 sh_mmcif_initialize_common(host);
720
721 plat->cfg.voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
722 plat->cfg.f_min = MMC_CLK_DIV_MIN(host->clk);
723 plat->cfg.f_max = MMC_CLK_DIV_MAX(host->clk);
724 plat->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
725
726 upriv->mmc = &plat->mmc;
727
728 return 0;
729 }
730
731 static const struct udevice_id sh_mmcif_sd_match[] = {
732 { .compatible = "renesas,sh-mmcif" },
733 { /* sentinel */ }
734 };
735
736 U_BOOT_DRIVER(sh_mmcif_mmc) = {
737 .name = "sh-mmcif",
738 .id = UCLASS_MMC,
739 .of_match = sh_mmcif_sd_match,
740 .bind = sh_mmcif_dm_bind,
741 .probe = sh_mmcif_dm_probe,
742 .priv_auto_alloc_size = sizeof(struct sh_mmcif_host),
743 .platdata_auto_alloc_size = sizeof(struct sh_mmcif_plat),
744 .ops = &sh_mmcif_dm_ops,
745 };
746 #endif
747