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Merge tag 'iwlwifi-next-for-kalle-2016-07-01' of git://git.kernel.org/pub/scm/linux...
[deliverable/linux.git] / drivers / mmc / host / toshsd.c
1 /*
2 * Toshiba PCI Secure Digital Host Controller Interface driver
3 *
4 * Copyright (C) 2014 Ondrej Zary
5 * Copyright (C) 2007 Richard Betts, All Rights Reserved.
6 *
7 * Based on asic3_mmc.c, copyright (c) 2005 SDG Systems, LLC and,
8 * sdhci.c, copyright (C) 2005-2006 Pierre Ossman
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or (at
13 * your option) any later version.
14 */
15
16 #include <linux/delay.h>
17 #include <linux/device.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
20 #include <linux/scatterlist.h>
21 #include <linux/interrupt.h>
22 #include <linux/io.h>
23 #include <linux/pm.h>
24 #include <linux/pm_runtime.h>
25 #include <linux/mmc/host.h>
26 #include <linux/mmc/mmc.h>
27
28 #include "toshsd.h"
29
30 #define DRIVER_NAME "toshsd"
31
32 static const struct pci_device_id pci_ids[] = {
33 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA, 0x0805) },
34 { /* end: all zeroes */ },
35 };
36
37 MODULE_DEVICE_TABLE(pci, pci_ids);
38
39 static void toshsd_init(struct toshsd_host *host)
40 {
41 /* enable clock */
42 pci_write_config_byte(host->pdev, SD_PCICFG_CLKSTOP,
43 SD_PCICFG_CLKSTOP_ENABLE_ALL);
44 pci_write_config_byte(host->pdev, SD_PCICFG_CARDDETECT, 2);
45
46 /* reset */
47 iowrite16(0, host->ioaddr + SD_SOFTWARERESET); /* assert */
48 mdelay(2);
49 iowrite16(1, host->ioaddr + SD_SOFTWARERESET); /* deassert */
50 mdelay(2);
51
52 /* Clear card registers */
53 iowrite16(0, host->ioaddr + SD_CARDCLOCKCTRL);
54 iowrite32(0, host->ioaddr + SD_CARDSTATUS);
55 iowrite32(0, host->ioaddr + SD_ERRORSTATUS0);
56 iowrite16(0, host->ioaddr + SD_STOPINTERNAL);
57
58 /* SDIO clock? */
59 iowrite16(0x100, host->ioaddr + SDIO_BASE + SDIO_CLOCKNWAITCTRL);
60
61 /* enable LED */
62 pci_write_config_byte(host->pdev, SD_PCICFG_SDLED_ENABLE1,
63 SD_PCICFG_LED_ENABLE1_START);
64 pci_write_config_byte(host->pdev, SD_PCICFG_SDLED_ENABLE2,
65 SD_PCICFG_LED_ENABLE2_START);
66
67 /* set interrupt masks */
68 iowrite32(~(u32)(SD_CARD_RESP_END | SD_CARD_RW_END
69 | SD_CARD_CARD_REMOVED_0 | SD_CARD_CARD_INSERTED_0
70 | SD_BUF_READ_ENABLE | SD_BUF_WRITE_ENABLE
71 | SD_BUF_CMD_TIMEOUT),
72 host->ioaddr + SD_INTMASKCARD);
73
74 iowrite16(0x1000, host->ioaddr + SD_TRANSACTIONCTRL);
75 }
76
77 /* Set MMC clock / power.
78 * Note: This controller uses a simple divider scheme therefore it cannot run
79 * SD/MMC cards at full speed (24/20MHz). HCLK (=33MHz PCI clock?) is too high
80 * and the next slowest is 16MHz (div=2).
81 */
82 static void __toshsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
83 {
84 struct toshsd_host *host = mmc_priv(mmc);
85
86 if (ios->clock) {
87 u16 clk;
88 int div = 1;
89
90 while (ios->clock < HCLK / div)
91 div *= 2;
92
93 clk = div >> 2;
94
95 if (div == 1) { /* disable the divider */
96 pci_write_config_byte(host->pdev, SD_PCICFG_CLKMODE,
97 SD_PCICFG_CLKMODE_DIV_DISABLE);
98 clk |= SD_CARDCLK_DIV_DISABLE;
99 } else
100 pci_write_config_byte(host->pdev, SD_PCICFG_CLKMODE, 0);
101
102 clk |= SD_CARDCLK_ENABLE_CLOCK;
103 iowrite16(clk, host->ioaddr + SD_CARDCLOCKCTRL);
104
105 mdelay(10);
106 } else
107 iowrite16(0, host->ioaddr + SD_CARDCLOCKCTRL);
108
109 switch (ios->power_mode) {
110 case MMC_POWER_OFF:
111 pci_write_config_byte(host->pdev, SD_PCICFG_POWER1,
112 SD_PCICFG_PWR1_OFF);
113 mdelay(1);
114 break;
115 case MMC_POWER_UP:
116 break;
117 case MMC_POWER_ON:
118 pci_write_config_byte(host->pdev, SD_PCICFG_POWER1,
119 SD_PCICFG_PWR1_33V);
120 pci_write_config_byte(host->pdev, SD_PCICFG_POWER2,
121 SD_PCICFG_PWR2_AUTO);
122 mdelay(20);
123 break;
124 }
125
126 switch (ios->bus_width) {
127 case MMC_BUS_WIDTH_1:
128 iowrite16(SD_CARDOPT_REQUIRED | SD_CARDOPT_DATA_RESP_TIMEOUT(14)
129 | SD_CARDOPT_C2_MODULE_ABSENT
130 | SD_CARDOPT_DATA_XFR_WIDTH_1,
131 host->ioaddr + SD_CARDOPTIONSETUP);
132 break;
133 case MMC_BUS_WIDTH_4:
134 iowrite16(SD_CARDOPT_REQUIRED | SD_CARDOPT_DATA_RESP_TIMEOUT(14)
135 | SD_CARDOPT_C2_MODULE_ABSENT
136 | SD_CARDOPT_DATA_XFR_WIDTH_4,
137 host->ioaddr + SD_CARDOPTIONSETUP);
138 break;
139 }
140 }
141
142 static void toshsd_set_led(struct toshsd_host *host, unsigned char state)
143 {
144 iowrite16(state, host->ioaddr + SDIO_BASE + SDIO_LEDCTRL);
145 }
146
147 static void toshsd_finish_request(struct toshsd_host *host)
148 {
149 struct mmc_request *mrq = host->mrq;
150
151 /* Write something to end the command */
152 host->mrq = NULL;
153 host->cmd = NULL;
154 host->data = NULL;
155
156 toshsd_set_led(host, 0);
157 mmc_request_done(host->mmc, mrq);
158 }
159
160 static irqreturn_t toshsd_thread_irq(int irq, void *dev_id)
161 {
162 struct toshsd_host *host = dev_id;
163 struct mmc_data *data = host->data;
164 struct sg_mapping_iter *sg_miter = &host->sg_miter;
165 unsigned short *buf;
166 int count;
167 unsigned long flags;
168
169 if (!data) {
170 dev_warn(&host->pdev->dev, "Spurious Data IRQ\n");
171 if (host->cmd) {
172 host->cmd->error = -EIO;
173 toshsd_finish_request(host);
174 }
175 return IRQ_NONE;
176 }
177 spin_lock_irqsave(&host->lock, flags);
178
179 if (!sg_miter_next(sg_miter))
180 goto done;
181
182 buf = sg_miter->addr;
183
184 /* Ensure we dont read more than one block. The chip will interrupt us
185 * When the next block is available.
186 */
187 count = sg_miter->length;
188 if (count > data->blksz)
189 count = data->blksz;
190
191 dev_dbg(&host->pdev->dev, "count: %08x, flags %08x\n", count,
192 data->flags);
193
194 /* Transfer the data */
195 if (data->flags & MMC_DATA_READ)
196 ioread32_rep(host->ioaddr + SD_DATAPORT, buf, count >> 2);
197 else
198 iowrite32_rep(host->ioaddr + SD_DATAPORT, buf, count >> 2);
199
200 sg_miter->consumed = count;
201 sg_miter_stop(sg_miter);
202
203 done:
204 spin_unlock_irqrestore(&host->lock, flags);
205
206 return IRQ_HANDLED;
207 }
208
209 static void toshsd_cmd_irq(struct toshsd_host *host)
210 {
211 struct mmc_command *cmd = host->cmd;
212 u8 *buf;
213 u16 data;
214
215 if (!host->cmd) {
216 dev_warn(&host->pdev->dev, "Spurious CMD irq\n");
217 return;
218 }
219 buf = (u8 *)cmd->resp;
220 host->cmd = NULL;
221
222 if (cmd->flags & MMC_RSP_PRESENT && cmd->flags & MMC_RSP_136) {
223 /* R2 */
224 buf[12] = 0xff;
225 data = ioread16(host->ioaddr + SD_RESPONSE0);
226 buf[13] = data & 0xff;
227 buf[14] = data >> 8;
228 data = ioread16(host->ioaddr + SD_RESPONSE1);
229 buf[15] = data & 0xff;
230 buf[8] = data >> 8;
231 data = ioread16(host->ioaddr + SD_RESPONSE2);
232 buf[9] = data & 0xff;
233 buf[10] = data >> 8;
234 data = ioread16(host->ioaddr + SD_RESPONSE3);
235 buf[11] = data & 0xff;
236 buf[4] = data >> 8;
237 data = ioread16(host->ioaddr + SD_RESPONSE4);
238 buf[5] = data & 0xff;
239 buf[6] = data >> 8;
240 data = ioread16(host->ioaddr + SD_RESPONSE5);
241 buf[7] = data & 0xff;
242 buf[0] = data >> 8;
243 data = ioread16(host->ioaddr + SD_RESPONSE6);
244 buf[1] = data & 0xff;
245 buf[2] = data >> 8;
246 data = ioread16(host->ioaddr + SD_RESPONSE7);
247 buf[3] = data & 0xff;
248 } else if (cmd->flags & MMC_RSP_PRESENT) {
249 /* R1, R1B, R3, R6, R7 */
250 data = ioread16(host->ioaddr + SD_RESPONSE0);
251 buf[0] = data & 0xff;
252 buf[1] = data >> 8;
253 data = ioread16(host->ioaddr + SD_RESPONSE1);
254 buf[2] = data & 0xff;
255 buf[3] = data >> 8;
256 }
257
258 dev_dbg(&host->pdev->dev, "Command IRQ complete %d %d %x\n",
259 cmd->opcode, cmd->error, cmd->flags);
260
261 /* If there is data to handle we will
262 * finish the request in the mmc_data_end_irq handler.*/
263 if (host->data)
264 return;
265
266 toshsd_finish_request(host);
267 }
268
269 static void toshsd_data_end_irq(struct toshsd_host *host)
270 {
271 struct mmc_data *data = host->data;
272
273 host->data = NULL;
274
275 if (!data) {
276 dev_warn(&host->pdev->dev, "Spurious data end IRQ\n");
277 return;
278 }
279
280 if (data->error == 0)
281 data->bytes_xfered = data->blocks * data->blksz;
282 else
283 data->bytes_xfered = 0;
284
285 dev_dbg(&host->pdev->dev, "Completed data request xfr=%d\n",
286 data->bytes_xfered);
287
288 iowrite16(0, host->ioaddr + SD_STOPINTERNAL);
289
290 toshsd_finish_request(host);
291 }
292
293 static irqreturn_t toshsd_irq(int irq, void *dev_id)
294 {
295 struct toshsd_host *host = dev_id;
296 u32 int_reg, int_mask, int_status, detail;
297 int error = 0, ret = IRQ_HANDLED;
298
299 spin_lock(&host->lock);
300 int_status = ioread32(host->ioaddr + SD_CARDSTATUS);
301 int_mask = ioread32(host->ioaddr + SD_INTMASKCARD);
302 int_reg = int_status & ~int_mask & ~IRQ_DONT_CARE_BITS;
303
304 dev_dbg(&host->pdev->dev, "IRQ status:%x mask:%x\n",
305 int_status, int_mask);
306
307 /* nothing to do: it's not our IRQ */
308 if (!int_reg) {
309 ret = IRQ_NONE;
310 goto irq_end;
311 }
312
313 if (int_reg & SD_BUF_CMD_TIMEOUT) {
314 error = -ETIMEDOUT;
315 dev_dbg(&host->pdev->dev, "Timeout\n");
316 } else if (int_reg & SD_BUF_CRC_ERR) {
317 error = -EILSEQ;
318 dev_err(&host->pdev->dev, "BadCRC\n");
319 } else if (int_reg & (SD_BUF_ILLEGAL_ACCESS
320 | SD_BUF_CMD_INDEX_ERR
321 | SD_BUF_STOP_BIT_END_ERR
322 | SD_BUF_OVERFLOW
323 | SD_BUF_UNDERFLOW
324 | SD_BUF_DATA_TIMEOUT)) {
325 dev_err(&host->pdev->dev, "Buffer status error: { %s%s%s%s%s%s}\n",
326 int_reg & SD_BUF_ILLEGAL_ACCESS ? "ILLEGAL_ACC " : "",
327 int_reg & SD_BUF_CMD_INDEX_ERR ? "CMD_INDEX " : "",
328 int_reg & SD_BUF_STOP_BIT_END_ERR ? "STOPBIT_END " : "",
329 int_reg & SD_BUF_OVERFLOW ? "OVERFLOW " : "",
330 int_reg & SD_BUF_UNDERFLOW ? "UNDERFLOW " : "",
331 int_reg & SD_BUF_DATA_TIMEOUT ? "DATA_TIMEOUT " : "");
332
333 detail = ioread32(host->ioaddr + SD_ERRORSTATUS0);
334 dev_err(&host->pdev->dev, "detail error status { %s%s%s%s%s%s%s%s%s%s%s%s%s}\n",
335 detail & SD_ERR0_RESP_CMD_ERR ? "RESP_CMD " : "",
336 detail & SD_ERR0_RESP_NON_CMD12_END_BIT_ERR ? "RESP_END_BIT " : "",
337 detail & SD_ERR0_RESP_CMD12_END_BIT_ERR ? "RESP_END_BIT " : "",
338 detail & SD_ERR0_READ_DATA_END_BIT_ERR ? "READ_DATA_END_BIT " : "",
339 detail & SD_ERR0_WRITE_CRC_STATUS_END_BIT_ERR ? "WRITE_CMD_END_BIT " : "",
340 detail & SD_ERR0_RESP_NON_CMD12_CRC_ERR ? "RESP_CRC " : "",
341 detail & SD_ERR0_RESP_CMD12_CRC_ERR ? "RESP_CRC " : "",
342 detail & SD_ERR0_READ_DATA_CRC_ERR ? "READ_DATA_CRC " : "",
343 detail & SD_ERR0_WRITE_CMD_CRC_ERR ? "WRITE_CMD_CRC " : "",
344 detail & SD_ERR1_NO_CMD_RESP ? "NO_CMD_RESP " : "",
345 detail & SD_ERR1_TIMEOUT_READ_DATA ? "READ_DATA_TIMEOUT " : "",
346 detail & SD_ERR1_TIMEOUT_CRS_STATUS ? "CRS_STATUS_TIMEOUT " : "",
347 detail & SD_ERR1_TIMEOUT_CRC_BUSY ? "CRC_BUSY_TIMEOUT " : "");
348 error = -EIO;
349 }
350
351 if (error) {
352 if (host->cmd)
353 host->cmd->error = error;
354
355 if (error == -ETIMEDOUT) {
356 iowrite32(int_status &
357 ~(SD_BUF_CMD_TIMEOUT | SD_CARD_RESP_END),
358 host->ioaddr + SD_CARDSTATUS);
359 } else {
360 toshsd_init(host);
361 __toshsd_set_ios(host->mmc, &host->mmc->ios);
362 goto irq_end;
363 }
364 }
365
366 /* Card insert/remove. The mmc controlling code is stateless. */
367 if (int_reg & (SD_CARD_CARD_INSERTED_0 | SD_CARD_CARD_REMOVED_0)) {
368 iowrite32(int_status &
369 ~(SD_CARD_CARD_REMOVED_0 | SD_CARD_CARD_INSERTED_0),
370 host->ioaddr + SD_CARDSTATUS);
371
372 if (int_reg & SD_CARD_CARD_INSERTED_0)
373 toshsd_init(host);
374
375 mmc_detect_change(host->mmc, 1);
376 }
377
378 /* Data transfer */
379 if (int_reg & (SD_BUF_READ_ENABLE | SD_BUF_WRITE_ENABLE)) {
380 iowrite32(int_status &
381 ~(SD_BUF_WRITE_ENABLE | SD_BUF_READ_ENABLE),
382 host->ioaddr + SD_CARDSTATUS);
383
384 ret = IRQ_WAKE_THREAD;
385 goto irq_end;
386 }
387
388 /* Command completion */
389 if (int_reg & SD_CARD_RESP_END) {
390 iowrite32(int_status & ~(SD_CARD_RESP_END),
391 host->ioaddr + SD_CARDSTATUS);
392 toshsd_cmd_irq(host);
393 }
394
395 /* Data transfer completion */
396 if (int_reg & SD_CARD_RW_END) {
397 iowrite32(int_status & ~(SD_CARD_RW_END),
398 host->ioaddr + SD_CARDSTATUS);
399 toshsd_data_end_irq(host);
400 }
401 irq_end:
402 spin_unlock(&host->lock);
403 return ret;
404 }
405
406 static void toshsd_start_cmd(struct toshsd_host *host, struct mmc_command *cmd)
407 {
408 struct mmc_data *data = host->data;
409 int c = cmd->opcode;
410
411 dev_dbg(&host->pdev->dev, "Command opcode: %d\n", cmd->opcode);
412
413 if (cmd->opcode == MMC_STOP_TRANSMISSION) {
414 iowrite16(SD_STOPINT_ISSUE_CMD12,
415 host->ioaddr + SD_STOPINTERNAL);
416
417 cmd->resp[0] = cmd->opcode;
418 cmd->resp[1] = 0;
419 cmd->resp[2] = 0;
420 cmd->resp[3] = 0;
421
422 toshsd_finish_request(host);
423 return;
424 }
425
426 switch (mmc_resp_type(cmd)) {
427 case MMC_RSP_NONE:
428 c |= SD_CMD_RESP_TYPE_NONE;
429 break;
430
431 case MMC_RSP_R1:
432 c |= SD_CMD_RESP_TYPE_EXT_R1;
433 break;
434 case MMC_RSP_R1B:
435 c |= SD_CMD_RESP_TYPE_EXT_R1B;
436 break;
437 case MMC_RSP_R2:
438 c |= SD_CMD_RESP_TYPE_EXT_R2;
439 break;
440 case MMC_RSP_R3:
441 c |= SD_CMD_RESP_TYPE_EXT_R3;
442 break;
443
444 default:
445 dev_err(&host->pdev->dev, "Unknown response type %d\n",
446 mmc_resp_type(cmd));
447 break;
448 }
449
450 host->cmd = cmd;
451
452 if (cmd->opcode == MMC_APP_CMD)
453 c |= SD_CMD_TYPE_ACMD;
454
455 if (cmd->opcode == MMC_GO_IDLE_STATE)
456 c |= (3 << 8); /* removed from ipaq-asic3.h for some reason */
457
458 if (data) {
459 c |= SD_CMD_DATA_PRESENT;
460
461 if (data->blocks > 1) {
462 iowrite16(SD_STOPINT_AUTO_ISSUE_CMD12,
463 host->ioaddr + SD_STOPINTERNAL);
464 c |= SD_CMD_MULTI_BLOCK;
465 }
466
467 if (data->flags & MMC_DATA_READ)
468 c |= SD_CMD_TRANSFER_READ;
469
470 /* MMC_DATA_WRITE does not require a bit to be set */
471 }
472
473 /* Send the command */
474 iowrite32(cmd->arg, host->ioaddr + SD_ARG0);
475 iowrite16(c, host->ioaddr + SD_CMD);
476 }
477
478 static void toshsd_start_data(struct toshsd_host *host, struct mmc_data *data)
479 {
480 unsigned int flags = SG_MITER_ATOMIC;
481
482 dev_dbg(&host->pdev->dev, "setup data transfer: blocksize %08x nr_blocks %d, offset: %08x\n",
483 data->blksz, data->blocks, data->sg->offset);
484
485 host->data = data;
486
487 if (data->flags & MMC_DATA_READ)
488 flags |= SG_MITER_TO_SG;
489 else
490 flags |= SG_MITER_FROM_SG;
491
492 sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
493
494 /* Set transfer length and blocksize */
495 iowrite16(data->blocks, host->ioaddr + SD_BLOCKCOUNT);
496 iowrite16(data->blksz, host->ioaddr + SD_CARDXFERDATALEN);
497 }
498
499 /* Process requests from the MMC layer */
500 static void toshsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
501 {
502 struct toshsd_host *host = mmc_priv(mmc);
503 unsigned long flags;
504
505 /* abort if card not present */
506 if (!(ioread16(host->ioaddr + SD_CARDSTATUS) & SD_CARD_PRESENT_0)) {
507 mrq->cmd->error = -ENOMEDIUM;
508 mmc_request_done(mmc, mrq);
509 return;
510 }
511
512 spin_lock_irqsave(&host->lock, flags);
513
514 WARN_ON(host->mrq != NULL);
515
516 host->mrq = mrq;
517
518 if (mrq->data)
519 toshsd_start_data(host, mrq->data);
520
521 toshsd_set_led(host, 1);
522
523 toshsd_start_cmd(host, mrq->cmd);
524
525 spin_unlock_irqrestore(&host->lock, flags);
526 }
527
528 static void toshsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
529 {
530 struct toshsd_host *host = mmc_priv(mmc);
531 unsigned long flags;
532
533 spin_lock_irqsave(&host->lock, flags);
534 __toshsd_set_ios(mmc, ios);
535 spin_unlock_irqrestore(&host->lock, flags);
536 }
537
538 static int toshsd_get_ro(struct mmc_host *mmc)
539 {
540 struct toshsd_host *host = mmc_priv(mmc);
541
542 /* active low */
543 return !(ioread16(host->ioaddr + SD_CARDSTATUS) & SD_CARD_WRITE_PROTECT);
544 }
545
546 static int toshsd_get_cd(struct mmc_host *mmc)
547 {
548 struct toshsd_host *host = mmc_priv(mmc);
549
550 return !!(ioread16(host->ioaddr + SD_CARDSTATUS) & SD_CARD_PRESENT_0);
551 }
552
553 static struct mmc_host_ops toshsd_ops = {
554 .request = toshsd_request,
555 .set_ios = toshsd_set_ios,
556 .get_ro = toshsd_get_ro,
557 .get_cd = toshsd_get_cd,
558 };
559
560
561 static void toshsd_powerdown(struct toshsd_host *host)
562 {
563 /* mask all interrupts */
564 iowrite32(0xffffffff, host->ioaddr + SD_INTMASKCARD);
565 /* disable card clock */
566 iowrite16(0x000, host->ioaddr + SDIO_BASE + SDIO_CLOCKNWAITCTRL);
567 iowrite16(0, host->ioaddr + SD_CARDCLOCKCTRL);
568 /* power down card */
569 pci_write_config_byte(host->pdev, SD_PCICFG_POWER1, SD_PCICFG_PWR1_OFF);
570 /* disable clock */
571 pci_write_config_byte(host->pdev, SD_PCICFG_CLKSTOP, 0);
572 }
573
574 #ifdef CONFIG_PM_SLEEP
575 static int toshsd_pm_suspend(struct device *dev)
576 {
577 struct pci_dev *pdev = to_pci_dev(dev);
578 struct toshsd_host *host = pci_get_drvdata(pdev);
579
580 toshsd_powerdown(host);
581
582 pci_save_state(pdev);
583 pci_enable_wake(pdev, PCI_D3hot, 0);
584 pci_disable_device(pdev);
585 pci_set_power_state(pdev, PCI_D3hot);
586
587 return 0;
588 }
589
590 static int toshsd_pm_resume(struct device *dev)
591 {
592 struct pci_dev *pdev = to_pci_dev(dev);
593 struct toshsd_host *host = pci_get_drvdata(pdev);
594 int ret;
595
596 pci_set_power_state(pdev, PCI_D0);
597 pci_restore_state(pdev);
598 ret = pci_enable_device(pdev);
599 if (ret)
600 return ret;
601
602 toshsd_init(host);
603
604 return 0;
605 }
606 #endif /* CONFIG_PM_SLEEP */
607
608 static int toshsd_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
609 {
610 int ret;
611 struct toshsd_host *host;
612 struct mmc_host *mmc;
613 resource_size_t base;
614
615 ret = pci_enable_device(pdev);
616 if (ret)
617 return ret;
618
619 mmc = mmc_alloc_host(sizeof(struct toshsd_host), &pdev->dev);
620 if (!mmc) {
621 ret = -ENOMEM;
622 goto err;
623 }
624
625 host = mmc_priv(mmc);
626 host->mmc = mmc;
627
628 host->pdev = pdev;
629 pci_set_drvdata(pdev, host);
630
631 ret = pci_request_regions(pdev, DRIVER_NAME);
632 if (ret)
633 goto free;
634
635 host->ioaddr = pci_iomap(pdev, 0, 0);
636 if (!host->ioaddr) {
637 ret = -ENOMEM;
638 goto release;
639 }
640
641 /* Set MMC host parameters */
642 mmc->ops = &toshsd_ops;
643 mmc->caps = MMC_CAP_4_BIT_DATA;
644 mmc->ocr_avail = MMC_VDD_32_33;
645
646 mmc->f_min = HCLK / 512;
647 mmc->f_max = HCLK;
648
649 spin_lock_init(&host->lock);
650
651 toshsd_init(host);
652
653 ret = request_threaded_irq(pdev->irq, toshsd_irq, toshsd_thread_irq,
654 IRQF_SHARED, DRIVER_NAME, host);
655 if (ret)
656 goto unmap;
657
658 mmc_add_host(mmc);
659
660 base = pci_resource_start(pdev, 0);
661 dev_dbg(&pdev->dev, "MMIO %pa, IRQ %d\n", &base, pdev->irq);
662
663 pm_suspend_ignore_children(&pdev->dev, 1);
664
665 return 0;
666
667 unmap:
668 pci_iounmap(pdev, host->ioaddr);
669 release:
670 pci_release_regions(pdev);
671 free:
672 mmc_free_host(mmc);
673 pci_set_drvdata(pdev, NULL);
674 err:
675 pci_disable_device(pdev);
676 return ret;
677 }
678
679 static void toshsd_remove(struct pci_dev *pdev)
680 {
681 struct toshsd_host *host = pci_get_drvdata(pdev);
682
683 mmc_remove_host(host->mmc);
684 toshsd_powerdown(host);
685 free_irq(pdev->irq, host);
686 pci_iounmap(pdev, host->ioaddr);
687 pci_release_regions(pdev);
688 mmc_free_host(host->mmc);
689 pci_set_drvdata(pdev, NULL);
690 pci_disable_device(pdev);
691 }
692
693 static const struct dev_pm_ops toshsd_pm_ops = {
694 SET_SYSTEM_SLEEP_PM_OPS(toshsd_pm_suspend, toshsd_pm_resume)
695 };
696
697 static struct pci_driver toshsd_driver = {
698 .name = DRIVER_NAME,
699 .id_table = pci_ids,
700 .probe = toshsd_probe,
701 .remove = toshsd_remove,
702 .driver.pm = &toshsd_pm_ops,
703 };
704
705 module_pci_driver(toshsd_driver);
706
707 MODULE_AUTHOR("Ondrej Zary, Richard Betts");
708 MODULE_DESCRIPTION("Toshiba PCI Secure Digital Host Controller Interface driver");
709 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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