1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Driver for Realtek PCI-Express card reader
3  *
4  * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
5  *
6  * Author:
7  *   Wei WANG <wei_wang@realsil.com.cn>
8  */
9 
10 #include <linux/pci.h>
11 #include <linux/module.h>
12 #include <linux/slab.h>
13 #include <linux/dma-mapping.h>
14 #include <linux/highmem.h>
15 #include <linux/interrupt.h>
16 #include <linux/delay.h>
17 #include <linux/idr.h>
18 #include <linux/platform_device.h>
19 #include <linux/mfd/core.h>
20 #include <linux/rtsx_pci.h>
21 #include <linux/mmc/card.h>
22 #include <asm/unaligned.h>
23 #include <linux/pm.h>
24 #include <linux/pm_runtime.h>
25 
26 #include "rtsx_pcr.h"
27 #include "rts5261.h"
28 #include "rts5228.h"
29 
30 static bool msi_en = true;
31 module_param(msi_en, bool, S_IRUGO | S_IWUSR);
32 MODULE_PARM_DESC(msi_en, "Enable MSI");
33 
34 static DEFINE_IDR(rtsx_pci_idr);
35 static DEFINE_SPINLOCK(rtsx_pci_lock);
36 
37 static struct mfd_cell rtsx_pcr_cells[] = {
38 	[RTSX_SD_CARD] = {
39 		.name = DRV_NAME_RTSX_PCI_SDMMC,
40 	},
41 };
42 
43 static const struct pci_device_id rtsx_pci_ids[] = {
44 	{ PCI_DEVICE(0x10EC, 0x5209), PCI_CLASS_OTHERS << 16, 0xFF0000 },
45 	{ PCI_DEVICE(0x10EC, 0x5229), PCI_CLASS_OTHERS << 16, 0xFF0000 },
46 	{ PCI_DEVICE(0x10EC, 0x5289), PCI_CLASS_OTHERS << 16, 0xFF0000 },
47 	{ PCI_DEVICE(0x10EC, 0x5227), PCI_CLASS_OTHERS << 16, 0xFF0000 },
48 	{ PCI_DEVICE(0x10EC, 0x522A), PCI_CLASS_OTHERS << 16, 0xFF0000 },
49 	{ PCI_DEVICE(0x10EC, 0x5249), PCI_CLASS_OTHERS << 16, 0xFF0000 },
50 	{ PCI_DEVICE(0x10EC, 0x5287), PCI_CLASS_OTHERS << 16, 0xFF0000 },
51 	{ PCI_DEVICE(0x10EC, 0x5286), PCI_CLASS_OTHERS << 16, 0xFF0000 },
52 	{ PCI_DEVICE(0x10EC, 0x524A), PCI_CLASS_OTHERS << 16, 0xFF0000 },
53 	{ PCI_DEVICE(0x10EC, 0x525A), PCI_CLASS_OTHERS << 16, 0xFF0000 },
54 	{ PCI_DEVICE(0x10EC, 0x5260), PCI_CLASS_OTHERS << 16, 0xFF0000 },
55 	{ PCI_DEVICE(0x10EC, 0x5261), PCI_CLASS_OTHERS << 16, 0xFF0000 },
56 	{ PCI_DEVICE(0x10EC, 0x5228), PCI_CLASS_OTHERS << 16, 0xFF0000 },
57 	{ 0, }
58 };
59 
60 MODULE_DEVICE_TABLE(pci, rtsx_pci_ids);
61 
62 static int rtsx_comm_set_ltr_latency(struct rtsx_pcr *pcr, u32 latency)
63 {
64 	rtsx_pci_write_register(pcr, MSGTXDATA0,
65 				MASK_8_BIT_DEF, (u8) (latency & 0xFF));
66 	rtsx_pci_write_register(pcr, MSGTXDATA1,
67 				MASK_8_BIT_DEF, (u8)((latency >> 8) & 0xFF));
68 	rtsx_pci_write_register(pcr, MSGTXDATA2,
69 				MASK_8_BIT_DEF, (u8)((latency >> 16) & 0xFF));
70 	rtsx_pci_write_register(pcr, MSGTXDATA3,
71 				MASK_8_BIT_DEF, (u8)((latency >> 24) & 0xFF));
72 	rtsx_pci_write_register(pcr, LTR_CTL, LTR_TX_EN_MASK |
73 		LTR_LATENCY_MODE_MASK, LTR_TX_EN_1 | LTR_LATENCY_MODE_SW);
74 
75 	return 0;
76 }
77 
78 int rtsx_set_ltr_latency(struct rtsx_pcr *pcr, u32 latency)
79 {
80 	return rtsx_comm_set_ltr_latency(pcr, latency);
81 }
82 
83 static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable)
84 {
85 	if (pcr->aspm_enabled == enable)
86 		return;
87 
88 	if (pcr->aspm_mode == ASPM_MODE_CFG) {
89 		pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
90 						PCI_EXP_LNKCTL_ASPMC,
91 						enable ? pcr->aspm_en : 0);
92 	} else if (pcr->aspm_mode == ASPM_MODE_REG) {
93 		if (pcr->aspm_en & 0x02)
94 			rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
95 				FORCE_ASPM_CTL1, enable ? 0 : FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
96 		else
97 			rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
98 				FORCE_ASPM_CTL1, FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
99 	}
100 
101 	if (!enable && (pcr->aspm_en & 0x02))
102 		mdelay(10);
103 
104 	pcr->aspm_enabled = enable;
105 }
106 
107 static void rtsx_disable_aspm(struct rtsx_pcr *pcr)
108 {
109 	if (pcr->ops->set_aspm)
110 		pcr->ops->set_aspm(pcr, false);
111 	else
112 		rtsx_comm_set_aspm(pcr, false);
113 }
114 
115 int rtsx_set_l1off_sub(struct rtsx_pcr *pcr, u8 val)
116 {
117 	rtsx_pci_write_register(pcr, L1SUB_CONFIG3, 0xFF, val);
118 
119 	return 0;
120 }
121 
122 static void rtsx_set_l1off_sub_cfg_d0(struct rtsx_pcr *pcr, int active)
123 {
124 	if (pcr->ops->set_l1off_cfg_sub_d0)
125 		pcr->ops->set_l1off_cfg_sub_d0(pcr, active);
126 }
127 
128 static void rtsx_comm_pm_full_on(struct rtsx_pcr *pcr)
129 {
130 	struct rtsx_cr_option *option = &pcr->option;
131 
132 	rtsx_disable_aspm(pcr);
133 
134 	/* Fixes DMA transfer timout issue after disabling ASPM on RTS5260 */
135 	msleep(1);
136 
137 	if (option->ltr_enabled)
138 		rtsx_set_ltr_latency(pcr, option->ltr_active_latency);
139 
140 	if (rtsx_check_dev_flag(pcr, LTR_L1SS_PWR_GATE_EN))
141 		rtsx_set_l1off_sub_cfg_d0(pcr, 1);
142 }
143 
144 static void rtsx_pm_full_on(struct rtsx_pcr *pcr)
145 {
146 	rtsx_comm_pm_full_on(pcr);
147 }
148 
149 void rtsx_pci_start_run(struct rtsx_pcr *pcr)
150 {
151 	/* If pci device removed, don't queue idle work any more */
152 	if (pcr->remove_pci)
153 		return;
154 
155 	if (pcr->rtd3_en)
156 		if (pcr->is_runtime_suspended) {
157 			pm_runtime_get(&(pcr->pci->dev));
158 			pcr->is_runtime_suspended = false;
159 		}
160 
161 	if (pcr->state != PDEV_STAT_RUN) {
162 		pcr->state = PDEV_STAT_RUN;
163 		if (pcr->ops->enable_auto_blink)
164 			pcr->ops->enable_auto_blink(pcr);
165 		rtsx_pm_full_on(pcr);
166 	}
167 
168 	mod_delayed_work(system_wq, &pcr->idle_work, msecs_to_jiffies(200));
169 }
170 EXPORT_SYMBOL_GPL(rtsx_pci_start_run);
171 
172 int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data)
173 {
174 	int i;
175 	u32 val = HAIMR_WRITE_START;
176 
177 	val |= (u32)(addr & 0x3FFF) << 16;
178 	val |= (u32)mask << 8;
179 	val |= (u32)data;
180 
181 	rtsx_pci_writel(pcr, RTSX_HAIMR, val);
182 
183 	for (i = 0; i < MAX_RW_REG_CNT; i++) {
184 		val = rtsx_pci_readl(pcr, RTSX_HAIMR);
185 		if ((val & HAIMR_TRANS_END) == 0) {
186 			if (data != (u8)val)
187 				return -EIO;
188 			return 0;
189 		}
190 	}
191 
192 	return -ETIMEDOUT;
193 }
194 EXPORT_SYMBOL_GPL(rtsx_pci_write_register);
195 
196 int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data)
197 {
198 	u32 val = HAIMR_READ_START;
199 	int i;
200 
201 	val |= (u32)(addr & 0x3FFF) << 16;
202 	rtsx_pci_writel(pcr, RTSX_HAIMR, val);
203 
204 	for (i = 0; i < MAX_RW_REG_CNT; i++) {
205 		val = rtsx_pci_readl(pcr, RTSX_HAIMR);
206 		if ((val & HAIMR_TRANS_END) == 0)
207 			break;
208 	}
209 
210 	if (i >= MAX_RW_REG_CNT)
211 		return -ETIMEDOUT;
212 
213 	if (data)
214 		*data = (u8)(val & 0xFF);
215 
216 	return 0;
217 }
218 EXPORT_SYMBOL_GPL(rtsx_pci_read_register);
219 
220 int __rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val)
221 {
222 	int err, i, finished = 0;
223 	u8 tmp;
224 
225 	rtsx_pci_write_register(pcr, PHYDATA0, 0xFF, (u8)val);
226 	rtsx_pci_write_register(pcr, PHYDATA1, 0xFF, (u8)(val >> 8));
227 	rtsx_pci_write_register(pcr, PHYADDR, 0xFF, addr);
228 	rtsx_pci_write_register(pcr, PHYRWCTL, 0xFF, 0x81);
229 
230 	for (i = 0; i < 100000; i++) {
231 		err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp);
232 		if (err < 0)
233 			return err;
234 
235 		if (!(tmp & 0x80)) {
236 			finished = 1;
237 			break;
238 		}
239 	}
240 
241 	if (!finished)
242 		return -ETIMEDOUT;
243 
244 	return 0;
245 }
246 
247 int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val)
248 {
249 	if (pcr->ops->write_phy)
250 		return pcr->ops->write_phy(pcr, addr, val);
251 
252 	return __rtsx_pci_write_phy_register(pcr, addr, val);
253 }
254 EXPORT_SYMBOL_GPL(rtsx_pci_write_phy_register);
255 
256 int __rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val)
257 {
258 	int err, i, finished = 0;
259 	u16 data;
260 	u8 tmp, val1, val2;
261 
262 	rtsx_pci_write_register(pcr, PHYADDR, 0xFF, addr);
263 	rtsx_pci_write_register(pcr, PHYRWCTL, 0xFF, 0x80);
264 
265 	for (i = 0; i < 100000; i++) {
266 		err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp);
267 		if (err < 0)
268 			return err;
269 
270 		if (!(tmp & 0x80)) {
271 			finished = 1;
272 			break;
273 		}
274 	}
275 
276 	if (!finished)
277 		return -ETIMEDOUT;
278 
279 	rtsx_pci_read_register(pcr, PHYDATA0, &val1);
280 	rtsx_pci_read_register(pcr, PHYDATA1, &val2);
281 	data = val1 | (val2 << 8);
282 
283 	if (val)
284 		*val = data;
285 
286 	return 0;
287 }
288 
289 int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val)
290 {
291 	if (pcr->ops->read_phy)
292 		return pcr->ops->read_phy(pcr, addr, val);
293 
294 	return __rtsx_pci_read_phy_register(pcr, addr, val);
295 }
296 EXPORT_SYMBOL_GPL(rtsx_pci_read_phy_register);
297 
298 void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr)
299 {
300 	if (pcr->ops->stop_cmd)
301 		return pcr->ops->stop_cmd(pcr);
302 
303 	rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD);
304 	rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA);
305 
306 	rtsx_pci_write_register(pcr, DMACTL, 0x80, 0x80);
307 	rtsx_pci_write_register(pcr, RBCTL, 0x80, 0x80);
308 }
309 EXPORT_SYMBOL_GPL(rtsx_pci_stop_cmd);
310 
311 void rtsx_pci_add_cmd(struct rtsx_pcr *pcr,
312 		u8 cmd_type, u16 reg_addr, u8 mask, u8 data)
313 {
314 	unsigned long flags;
315 	u32 val = 0;
316 	u32 *ptr = (u32 *)(pcr->host_cmds_ptr);
317 
318 	val |= (u32)(cmd_type & 0x03) << 30;
319 	val |= (u32)(reg_addr & 0x3FFF) << 16;
320 	val |= (u32)mask << 8;
321 	val |= (u32)data;
322 
323 	spin_lock_irqsave(&pcr->lock, flags);
324 	ptr += pcr->ci;
325 	if (pcr->ci < (HOST_CMDS_BUF_LEN / 4)) {
326 		put_unaligned_le32(val, ptr);
327 		ptr++;
328 		pcr->ci++;
329 	}
330 	spin_unlock_irqrestore(&pcr->lock, flags);
331 }
332 EXPORT_SYMBOL_GPL(rtsx_pci_add_cmd);
333 
334 void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr)
335 {
336 	u32 val = 1 << 31;
337 
338 	rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
339 
340 	val |= (u32)(pcr->ci * 4) & 0x00FFFFFF;
341 	/* Hardware Auto Response */
342 	val |= 0x40000000;
343 	rtsx_pci_writel(pcr, RTSX_HCBCTLR, val);
344 }
345 EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd_no_wait);
346 
347 int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout)
348 {
349 	struct completion trans_done;
350 	u32 val = 1 << 31;
351 	long timeleft;
352 	unsigned long flags;
353 	int err = 0;
354 
355 	spin_lock_irqsave(&pcr->lock, flags);
356 
357 	/* set up data structures for the wakeup system */
358 	pcr->done = &trans_done;
359 	pcr->trans_result = TRANS_NOT_READY;
360 	init_completion(&trans_done);
361 
362 	rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
363 
364 	val |= (u32)(pcr->ci * 4) & 0x00FFFFFF;
365 	/* Hardware Auto Response */
366 	val |= 0x40000000;
367 	rtsx_pci_writel(pcr, RTSX_HCBCTLR, val);
368 
369 	spin_unlock_irqrestore(&pcr->lock, flags);
370 
371 	/* Wait for TRANS_OK_INT */
372 	timeleft = wait_for_completion_interruptible_timeout(
373 			&trans_done, msecs_to_jiffies(timeout));
374 	if (timeleft <= 0) {
375 		pcr_dbg(pcr, "Timeout (%s %d)\n", __func__, __LINE__);
376 		err = -ETIMEDOUT;
377 		goto finish_send_cmd;
378 	}
379 
380 	spin_lock_irqsave(&pcr->lock, flags);
381 	if (pcr->trans_result == TRANS_RESULT_FAIL)
382 		err = -EINVAL;
383 	else if (pcr->trans_result == TRANS_RESULT_OK)
384 		err = 0;
385 	else if (pcr->trans_result == TRANS_NO_DEVICE)
386 		err = -ENODEV;
387 	spin_unlock_irqrestore(&pcr->lock, flags);
388 
389 finish_send_cmd:
390 	spin_lock_irqsave(&pcr->lock, flags);
391 	pcr->done = NULL;
392 	spin_unlock_irqrestore(&pcr->lock, flags);
393 
394 	if ((err < 0) && (err != -ENODEV))
395 		rtsx_pci_stop_cmd(pcr);
396 
397 	if (pcr->finish_me)
398 		complete(pcr->finish_me);
399 
400 	return err;
401 }
402 EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd);
403 
404 static void rtsx_pci_add_sg_tbl(struct rtsx_pcr *pcr,
405 		dma_addr_t addr, unsigned int len, int end)
406 {
407 	u64 *ptr = (u64 *)(pcr->host_sg_tbl_ptr) + pcr->sgi;
408 	u64 val;
409 	u8 option = RTSX_SG_VALID | RTSX_SG_TRANS_DATA;
410 
411 	pcr_dbg(pcr, "DMA addr: 0x%x, Len: 0x%x\n", (unsigned int)addr, len);
412 
413 	if (end)
414 		option |= RTSX_SG_END;
415 
416 	if ((PCI_PID(pcr) == PID_5261) || (PCI_PID(pcr) == PID_5228)) {
417 		if (len > 0xFFFF)
418 			val = ((u64)addr << 32) | (((u64)len & 0xFFFF) << 16)
419 				| (((u64)len >> 16) << 6) | option;
420 		else
421 			val = ((u64)addr << 32) | ((u64)len << 16) | option;
422 	} else {
423 		val = ((u64)addr << 32) | ((u64)len << 12) | option;
424 	}
425 	put_unaligned_le64(val, ptr);
426 	pcr->sgi++;
427 }
428 
429 int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
430 		int num_sg, bool read, int timeout)
431 {
432 	int err = 0, count;
433 
434 	pcr_dbg(pcr, "--> %s: num_sg = %d\n", __func__, num_sg);
435 	count = rtsx_pci_dma_map_sg(pcr, sglist, num_sg, read);
436 	if (count < 1)
437 		return -EINVAL;
438 	pcr_dbg(pcr, "DMA mapping count: %d\n", count);
439 
440 	err = rtsx_pci_dma_transfer(pcr, sglist, count, read, timeout);
441 
442 	rtsx_pci_dma_unmap_sg(pcr, sglist, num_sg, read);
443 
444 	return err;
445 }
446 EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data);
447 
448 int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
449 		int num_sg, bool read)
450 {
451 	enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
452 
453 	if (pcr->remove_pci)
454 		return -EINVAL;
455 
456 	if ((sglist == NULL) || (num_sg <= 0))
457 		return -EINVAL;
458 
459 	return dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dir);
460 }
461 EXPORT_SYMBOL_GPL(rtsx_pci_dma_map_sg);
462 
463 void rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
464 		int num_sg, bool read)
465 {
466 	enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
467 
468 	dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dir);
469 }
470 EXPORT_SYMBOL_GPL(rtsx_pci_dma_unmap_sg);
471 
472 int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist,
473 		int count, bool read, int timeout)
474 {
475 	struct completion trans_done;
476 	struct scatterlist *sg;
477 	dma_addr_t addr;
478 	long timeleft;
479 	unsigned long flags;
480 	unsigned int len;
481 	int i, err = 0;
482 	u32 val;
483 	u8 dir = read ? DEVICE_TO_HOST : HOST_TO_DEVICE;
484 
485 	if (pcr->remove_pci)
486 		return -ENODEV;
487 
488 	if ((sglist == NULL) || (count < 1))
489 		return -EINVAL;
490 
491 	val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE;
492 	pcr->sgi = 0;
493 	for_each_sg(sglist, sg, count, i) {
494 		addr = sg_dma_address(sg);
495 		len = sg_dma_len(sg);
496 		rtsx_pci_add_sg_tbl(pcr, addr, len, i == count - 1);
497 	}
498 
499 	spin_lock_irqsave(&pcr->lock, flags);
500 
501 	pcr->done = &trans_done;
502 	pcr->trans_result = TRANS_NOT_READY;
503 	init_completion(&trans_done);
504 	rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
505 	rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
506 
507 	spin_unlock_irqrestore(&pcr->lock, flags);
508 
509 	timeleft = wait_for_completion_interruptible_timeout(
510 			&trans_done, msecs_to_jiffies(timeout));
511 	if (timeleft <= 0) {
512 		pcr_dbg(pcr, "Timeout (%s %d)\n", __func__, __LINE__);
513 		err = -ETIMEDOUT;
514 		goto out;
515 	}
516 
517 	spin_lock_irqsave(&pcr->lock, flags);
518 	if (pcr->trans_result == TRANS_RESULT_FAIL) {
519 		err = -EILSEQ;
520 		if (pcr->dma_error_count < RTS_MAX_TIMES_FREQ_REDUCTION)
521 			pcr->dma_error_count++;
522 	}
523 
524 	else if (pcr->trans_result == TRANS_NO_DEVICE)
525 		err = -ENODEV;
526 	spin_unlock_irqrestore(&pcr->lock, flags);
527 
528 out:
529 	spin_lock_irqsave(&pcr->lock, flags);
530 	pcr->done = NULL;
531 	spin_unlock_irqrestore(&pcr->lock, flags);
532 
533 	if ((err < 0) && (err != -ENODEV))
534 		rtsx_pci_stop_cmd(pcr);
535 
536 	if (pcr->finish_me)
537 		complete(pcr->finish_me);
538 
539 	return err;
540 }
541 EXPORT_SYMBOL_GPL(rtsx_pci_dma_transfer);
542 
543 int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
544 {
545 	int err;
546 	int i, j;
547 	u16 reg;
548 	u8 *ptr;
549 
550 	if (buf_len > 512)
551 		buf_len = 512;
552 
553 	ptr = buf;
554 	reg = PPBUF_BASE2;
555 	for (i = 0; i < buf_len / 256; i++) {
556 		rtsx_pci_init_cmd(pcr);
557 
558 		for (j = 0; j < 256; j++)
559 			rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0);
560 
561 		err = rtsx_pci_send_cmd(pcr, 250);
562 		if (err < 0)
563 			return err;
564 
565 		memcpy(ptr, rtsx_pci_get_cmd_data(pcr), 256);
566 		ptr += 256;
567 	}
568 
569 	if (buf_len % 256) {
570 		rtsx_pci_init_cmd(pcr);
571 
572 		for (j = 0; j < buf_len % 256; j++)
573 			rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0);
574 
575 		err = rtsx_pci_send_cmd(pcr, 250);
576 		if (err < 0)
577 			return err;
578 	}
579 
580 	memcpy(ptr, rtsx_pci_get_cmd_data(pcr), buf_len % 256);
581 
582 	return 0;
583 }
584 EXPORT_SYMBOL_GPL(rtsx_pci_read_ppbuf);
585 
586 int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
587 {
588 	int err;
589 	int i, j;
590 	u16 reg;
591 	u8 *ptr;
592 
593 	if (buf_len > 512)
594 		buf_len = 512;
595 
596 	ptr = buf;
597 	reg = PPBUF_BASE2;
598 	for (i = 0; i < buf_len / 256; i++) {
599 		rtsx_pci_init_cmd(pcr);
600 
601 		for (j = 0; j < 256; j++) {
602 			rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
603 					reg++, 0xFF, *ptr);
604 			ptr++;
605 		}
606 
607 		err = rtsx_pci_send_cmd(pcr, 250);
608 		if (err < 0)
609 			return err;
610 	}
611 
612 	if (buf_len % 256) {
613 		rtsx_pci_init_cmd(pcr);
614 
615 		for (j = 0; j < buf_len % 256; j++) {
616 			rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
617 					reg++, 0xFF, *ptr);
618 			ptr++;
619 		}
620 
621 		err = rtsx_pci_send_cmd(pcr, 250);
622 		if (err < 0)
623 			return err;
624 	}
625 
626 	return 0;
627 }
628 EXPORT_SYMBOL_GPL(rtsx_pci_write_ppbuf);
629 
630 static int rtsx_pci_set_pull_ctl(struct rtsx_pcr *pcr, const u32 *tbl)
631 {
632 	rtsx_pci_init_cmd(pcr);
633 
634 	while (*tbl & 0xFFFF0000) {
635 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
636 				(u16)(*tbl >> 16), 0xFF, (u8)(*tbl));
637 		tbl++;
638 	}
639 
640 	return rtsx_pci_send_cmd(pcr, 100);
641 }
642 
643 int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card)
644 {
645 	const u32 *tbl;
646 
647 	if (card == RTSX_SD_CARD)
648 		tbl = pcr->sd_pull_ctl_enable_tbl;
649 	else if (card == RTSX_MS_CARD)
650 		tbl = pcr->ms_pull_ctl_enable_tbl;
651 	else
652 		return -EINVAL;
653 
654 	return rtsx_pci_set_pull_ctl(pcr, tbl);
655 }
656 EXPORT_SYMBOL_GPL(rtsx_pci_card_pull_ctl_enable);
657 
658 int rtsx_pci_card_pull_ctl_disable(struct rtsx_pcr *pcr, int card)
659 {
660 	const u32 *tbl;
661 
662 	if (card == RTSX_SD_CARD)
663 		tbl = pcr->sd_pull_ctl_disable_tbl;
664 	else if (card == RTSX_MS_CARD)
665 		tbl = pcr->ms_pull_ctl_disable_tbl;
666 	else
667 		return -EINVAL;
668 
669 	return rtsx_pci_set_pull_ctl(pcr, tbl);
670 }
671 EXPORT_SYMBOL_GPL(rtsx_pci_card_pull_ctl_disable);
672 
673 static void rtsx_pci_enable_bus_int(struct rtsx_pcr *pcr)
674 {
675 	struct rtsx_hw_param *hw_param = &pcr->hw_param;
676 
677 	pcr->bier = TRANS_OK_INT_EN | TRANS_FAIL_INT_EN | SD_INT_EN
678 		| hw_param->interrupt_en;
679 
680 	if (pcr->num_slots > 1)
681 		pcr->bier |= MS_INT_EN;
682 
683 	/* Enable Bus Interrupt */
684 	rtsx_pci_writel(pcr, RTSX_BIER, pcr->bier);
685 
686 	pcr_dbg(pcr, "RTSX_BIER: 0x%08x\n", pcr->bier);
687 }
688 
689 static inline u8 double_ssc_depth(u8 depth)
690 {
691 	return ((depth > 1) ? (depth - 1) : depth);
692 }
693 
694 static u8 revise_ssc_depth(u8 ssc_depth, u8 div)
695 {
696 	if (div > CLK_DIV_1) {
697 		if (ssc_depth > (div - 1))
698 			ssc_depth -= (div - 1);
699 		else
700 			ssc_depth = SSC_DEPTH_4M;
701 	}
702 
703 	return ssc_depth;
704 }
705 
706 int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
707 		u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk)
708 {
709 	int err, clk;
710 	u8 n, clk_divider, mcu_cnt, div;
711 	static const u8 depth[] = {
712 		[RTSX_SSC_DEPTH_4M] = SSC_DEPTH_4M,
713 		[RTSX_SSC_DEPTH_2M] = SSC_DEPTH_2M,
714 		[RTSX_SSC_DEPTH_1M] = SSC_DEPTH_1M,
715 		[RTSX_SSC_DEPTH_500K] = SSC_DEPTH_500K,
716 		[RTSX_SSC_DEPTH_250K] = SSC_DEPTH_250K,
717 	};
718 
719 	if (PCI_PID(pcr) == PID_5261)
720 		return rts5261_pci_switch_clock(pcr, card_clock,
721 				ssc_depth, initial_mode, double_clk, vpclk);
722 	if (PCI_PID(pcr) == PID_5228)
723 		return rts5228_pci_switch_clock(pcr, card_clock,
724 				ssc_depth, initial_mode, double_clk, vpclk);
725 
726 	if (initial_mode) {
727 		/* We use 250k(around) here, in initial stage */
728 		clk_divider = SD_CLK_DIVIDE_128;
729 		card_clock = 30000000;
730 	} else {
731 		clk_divider = SD_CLK_DIVIDE_0;
732 	}
733 	err = rtsx_pci_write_register(pcr, SD_CFG1,
734 			SD_CLK_DIVIDE_MASK, clk_divider);
735 	if (err < 0)
736 		return err;
737 
738 	/* Reduce card clock by 20MHz each time a DMA transfer error occurs */
739 	if (card_clock == UHS_SDR104_MAX_DTR &&
740 	    pcr->dma_error_count &&
741 	    PCI_PID(pcr) == RTS5227_DEVICE_ID)
742 		card_clock = UHS_SDR104_MAX_DTR -
743 			(pcr->dma_error_count * 20000000);
744 
745 	card_clock /= 1000000;
746 	pcr_dbg(pcr, "Switch card clock to %dMHz\n", card_clock);
747 
748 	clk = card_clock;
749 	if (!initial_mode && double_clk)
750 		clk = card_clock * 2;
751 	pcr_dbg(pcr, "Internal SSC clock: %dMHz (cur_clock = %d)\n",
752 		clk, pcr->cur_clock);
753 
754 	if (clk == pcr->cur_clock)
755 		return 0;
756 
757 	if (pcr->ops->conv_clk_and_div_n)
758 		n = (u8)pcr->ops->conv_clk_and_div_n(clk, CLK_TO_DIV_N);
759 	else
760 		n = (u8)(clk - 2);
761 	if ((clk <= 2) || (n > MAX_DIV_N_PCR))
762 		return -EINVAL;
763 
764 	mcu_cnt = (u8)(125/clk + 3);
765 	if (mcu_cnt > 15)
766 		mcu_cnt = 15;
767 
768 	/* Make sure that the SSC clock div_n is not less than MIN_DIV_N_PCR */
769 	div = CLK_DIV_1;
770 	while ((n < MIN_DIV_N_PCR) && (div < CLK_DIV_8)) {
771 		if (pcr->ops->conv_clk_and_div_n) {
772 			int dbl_clk = pcr->ops->conv_clk_and_div_n(n,
773 					DIV_N_TO_CLK) * 2;
774 			n = (u8)pcr->ops->conv_clk_and_div_n(dbl_clk,
775 					CLK_TO_DIV_N);
776 		} else {
777 			n = (n + 2) * 2 - 2;
778 		}
779 		div++;
780 	}
781 	pcr_dbg(pcr, "n = %d, div = %d\n", n, div);
782 
783 	ssc_depth = depth[ssc_depth];
784 	if (double_clk)
785 		ssc_depth = double_ssc_depth(ssc_depth);
786 
787 	ssc_depth = revise_ssc_depth(ssc_depth, div);
788 	pcr_dbg(pcr, "ssc_depth = %d\n", ssc_depth);
789 
790 	rtsx_pci_init_cmd(pcr);
791 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
792 			CLK_LOW_FREQ, CLK_LOW_FREQ);
793 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV,
794 			0xFF, (div << 4) | mcu_cnt);
795 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
796 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2,
797 			SSC_DEPTH_MASK, ssc_depth);
798 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n);
799 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
800 	if (vpclk) {
801 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
802 				PHASE_NOT_RESET, 0);
803 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
804 				PHASE_NOT_RESET, PHASE_NOT_RESET);
805 	}
806 
807 	err = rtsx_pci_send_cmd(pcr, 2000);
808 	if (err < 0)
809 		return err;
810 
811 	/* Wait SSC clock stable */
812 	udelay(SSC_CLOCK_STABLE_WAIT);
813 	err = rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0);
814 	if (err < 0)
815 		return err;
816 
817 	pcr->cur_clock = clk;
818 	return 0;
819 }
820 EXPORT_SYMBOL_GPL(rtsx_pci_switch_clock);
821 
822 int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card)
823 {
824 	if (pcr->ops->card_power_on)
825 		return pcr->ops->card_power_on(pcr, card);
826 
827 	return 0;
828 }
829 EXPORT_SYMBOL_GPL(rtsx_pci_card_power_on);
830 
831 int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card)
832 {
833 	if (pcr->ops->card_power_off)
834 		return pcr->ops->card_power_off(pcr, card);
835 
836 	return 0;
837 }
838 EXPORT_SYMBOL_GPL(rtsx_pci_card_power_off);
839 
840 int rtsx_pci_card_exclusive_check(struct rtsx_pcr *pcr, int card)
841 {
842 	static const unsigned int cd_mask[] = {
843 		[RTSX_SD_CARD] = SD_EXIST,
844 		[RTSX_MS_CARD] = MS_EXIST
845 	};
846 
847 	if (!(pcr->flags & PCR_MS_PMOS)) {
848 		/* When using single PMOS, accessing card is not permitted
849 		 * if the existing card is not the designated one.
850 		 */
851 		if (pcr->card_exist & (~cd_mask[card]))
852 			return -EIO;
853 	}
854 
855 	return 0;
856 }
857 EXPORT_SYMBOL_GPL(rtsx_pci_card_exclusive_check);
858 
859 int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
860 {
861 	if (pcr->ops->switch_output_voltage)
862 		return pcr->ops->switch_output_voltage(pcr, voltage);
863 
864 	return 0;
865 }
866 EXPORT_SYMBOL_GPL(rtsx_pci_switch_output_voltage);
867 
868 unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr)
869 {
870 	unsigned int val;
871 
872 	val = rtsx_pci_readl(pcr, RTSX_BIPR);
873 	if (pcr->ops->cd_deglitch)
874 		val = pcr->ops->cd_deglitch(pcr);
875 
876 	return val;
877 }
878 EXPORT_SYMBOL_GPL(rtsx_pci_card_exist);
879 
880 void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr)
881 {
882 	struct completion finish;
883 
884 	pcr->finish_me = &finish;
885 	init_completion(&finish);
886 
887 	if (pcr->done)
888 		complete(pcr->done);
889 
890 	if (!pcr->remove_pci)
891 		rtsx_pci_stop_cmd(pcr);
892 
893 	wait_for_completion_interruptible_timeout(&finish,
894 			msecs_to_jiffies(2));
895 	pcr->finish_me = NULL;
896 }
897 EXPORT_SYMBOL_GPL(rtsx_pci_complete_unfinished_transfer);
898 
899 static void rtsx_pci_card_detect(struct work_struct *work)
900 {
901 	struct delayed_work *dwork;
902 	struct rtsx_pcr *pcr;
903 	unsigned long flags;
904 	unsigned int card_detect = 0, card_inserted, card_removed;
905 	u32 irq_status;
906 
907 	dwork = to_delayed_work(work);
908 	pcr = container_of(dwork, struct rtsx_pcr, carddet_work);
909 
910 	pcr_dbg(pcr, "--> %s\n", __func__);
911 
912 	mutex_lock(&pcr->pcr_mutex);
913 	spin_lock_irqsave(&pcr->lock, flags);
914 
915 	irq_status = rtsx_pci_readl(pcr, RTSX_BIPR);
916 	pcr_dbg(pcr, "irq_status: 0x%08x\n", irq_status);
917 
918 	irq_status &= CARD_EXIST;
919 	card_inserted = pcr->card_inserted & irq_status;
920 	card_removed = pcr->card_removed;
921 	pcr->card_inserted = 0;
922 	pcr->card_removed = 0;
923 
924 	spin_unlock_irqrestore(&pcr->lock, flags);
925 
926 	if (card_inserted || card_removed) {
927 		pcr_dbg(pcr, "card_inserted: 0x%x, card_removed: 0x%x\n",
928 			card_inserted, card_removed);
929 
930 		if (pcr->ops->cd_deglitch)
931 			card_inserted = pcr->ops->cd_deglitch(pcr);
932 
933 		card_detect = card_inserted | card_removed;
934 
935 		pcr->card_exist |= card_inserted;
936 		pcr->card_exist &= ~card_removed;
937 	}
938 
939 	mutex_unlock(&pcr->pcr_mutex);
940 
941 	if ((card_detect & SD_EXIST) && pcr->slots[RTSX_SD_CARD].card_event)
942 		pcr->slots[RTSX_SD_CARD].card_event(
943 				pcr->slots[RTSX_SD_CARD].p_dev);
944 	if ((card_detect & MS_EXIST) && pcr->slots[RTSX_MS_CARD].card_event)
945 		pcr->slots[RTSX_MS_CARD].card_event(
946 				pcr->slots[RTSX_MS_CARD].p_dev);
947 }
948 
949 static void rtsx_pci_process_ocp(struct rtsx_pcr *pcr)
950 {
951 	if (pcr->ops->process_ocp) {
952 		pcr->ops->process_ocp(pcr);
953 	} else {
954 		if (!pcr->option.ocp_en)
955 			return;
956 		rtsx_pci_get_ocpstat(pcr, &pcr->ocp_stat);
957 		if (pcr->ocp_stat & (SD_OC_NOW | SD_OC_EVER)) {
958 			rtsx_pci_card_power_off(pcr, RTSX_SD_CARD);
959 			rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0);
960 			rtsx_pci_clear_ocpstat(pcr);
961 			pcr->ocp_stat = 0;
962 		}
963 	}
964 }
965 
966 static int rtsx_pci_process_ocp_interrupt(struct rtsx_pcr *pcr)
967 {
968 	if (pcr->option.ocp_en)
969 		rtsx_pci_process_ocp(pcr);
970 
971 	return 0;
972 }
973 
974 static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
975 {
976 	struct rtsx_pcr *pcr = dev_id;
977 	u32 int_reg;
978 
979 	if (!pcr)
980 		return IRQ_NONE;
981 
982 	spin_lock(&pcr->lock);
983 
984 	int_reg = rtsx_pci_readl(pcr, RTSX_BIPR);
985 	/* Clear interrupt flag */
986 	rtsx_pci_writel(pcr, RTSX_BIPR, int_reg);
987 	if ((int_reg & pcr->bier) == 0) {
988 		spin_unlock(&pcr->lock);
989 		return IRQ_NONE;
990 	}
991 	if (int_reg == 0xFFFFFFFF) {
992 		spin_unlock(&pcr->lock);
993 		return IRQ_HANDLED;
994 	}
995 
996 	int_reg &= (pcr->bier | 0x7FFFFF);
997 
998 	if (int_reg & SD_OC_INT)
999 		rtsx_pci_process_ocp_interrupt(pcr);
1000 
1001 	if (int_reg & SD_INT) {
1002 		if (int_reg & SD_EXIST) {
1003 			pcr->card_inserted |= SD_EXIST;
1004 		} else {
1005 			pcr->card_removed |= SD_EXIST;
1006 			pcr->card_inserted &= ~SD_EXIST;
1007 			if (PCI_PID(pcr) == PID_5261) {
1008 				rtsx_pci_write_register(pcr, RTS5261_FW_STATUS,
1009 					RTS5261_EXPRESS_LINK_FAIL_MASK, 0);
1010 				pcr->extra_caps |= EXTRA_CAPS_SD_EXPRESS;
1011 			}
1012 		}
1013 		pcr->dma_error_count = 0;
1014 	}
1015 
1016 	if (int_reg & MS_INT) {
1017 		if (int_reg & MS_EXIST) {
1018 			pcr->card_inserted |= MS_EXIST;
1019 		} else {
1020 			pcr->card_removed |= MS_EXIST;
1021 			pcr->card_inserted &= ~MS_EXIST;
1022 		}
1023 	}
1024 
1025 	if (int_reg & (NEED_COMPLETE_INT | DELINK_INT)) {
1026 		if (int_reg & (TRANS_FAIL_INT | DELINK_INT)) {
1027 			pcr->trans_result = TRANS_RESULT_FAIL;
1028 			if (pcr->done)
1029 				complete(pcr->done);
1030 		} else if (int_reg & TRANS_OK_INT) {
1031 			pcr->trans_result = TRANS_RESULT_OK;
1032 			if (pcr->done)
1033 				complete(pcr->done);
1034 		}
1035 	}
1036 
1037 	if ((pcr->card_inserted || pcr->card_removed) && !(int_reg & SD_OC_INT))
1038 		schedule_delayed_work(&pcr->carddet_work,
1039 				msecs_to_jiffies(200));
1040 
1041 	spin_unlock(&pcr->lock);
1042 	return IRQ_HANDLED;
1043 }
1044 
1045 static int rtsx_pci_acquire_irq(struct rtsx_pcr *pcr)
1046 {
1047 	pcr_dbg(pcr, "%s: pcr->msi_en = %d, pci->irq = %d\n",
1048 			__func__, pcr->msi_en, pcr->pci->irq);
1049 
1050 	if (request_irq(pcr->pci->irq, rtsx_pci_isr,
1051 			pcr->msi_en ? 0 : IRQF_SHARED,
1052 			DRV_NAME_RTSX_PCI, pcr)) {
1053 		dev_err(&(pcr->pci->dev),
1054 			"rtsx_sdmmc: unable to grab IRQ %d, disabling device\n",
1055 			pcr->pci->irq);
1056 		return -1;
1057 	}
1058 
1059 	pcr->irq = pcr->pci->irq;
1060 	pci_intx(pcr->pci, !pcr->msi_en);
1061 
1062 	return 0;
1063 }
1064 
1065 static void rtsx_enable_aspm(struct rtsx_pcr *pcr)
1066 {
1067 	if (pcr->ops->set_aspm)
1068 		pcr->ops->set_aspm(pcr, true);
1069 	else
1070 		rtsx_comm_set_aspm(pcr, true);
1071 }
1072 
1073 static void rtsx_comm_pm_power_saving(struct rtsx_pcr *pcr)
1074 {
1075 	struct rtsx_cr_option *option = &pcr->option;
1076 
1077 	if (option->ltr_enabled) {
1078 		u32 latency = option->ltr_l1off_latency;
1079 
1080 		if (rtsx_check_dev_flag(pcr, L1_SNOOZE_TEST_EN))
1081 			mdelay(option->l1_snooze_delay);
1082 
1083 		rtsx_set_ltr_latency(pcr, latency);
1084 	}
1085 
1086 	if (rtsx_check_dev_flag(pcr, LTR_L1SS_PWR_GATE_EN))
1087 		rtsx_set_l1off_sub_cfg_d0(pcr, 0);
1088 
1089 	rtsx_enable_aspm(pcr);
1090 }
1091 
1092 static void rtsx_pm_power_saving(struct rtsx_pcr *pcr)
1093 {
1094 	rtsx_comm_pm_power_saving(pcr);
1095 }
1096 
1097 static void rtsx_pci_rtd3_work(struct work_struct *work)
1098 {
1099 	struct delayed_work *dwork = to_delayed_work(work);
1100 	struct rtsx_pcr *pcr = container_of(dwork, struct rtsx_pcr, rtd3_work);
1101 
1102 	pcr_dbg(pcr, "--> %s\n", __func__);
1103 	if (!pcr->is_runtime_suspended)
1104 		pm_runtime_put(&(pcr->pci->dev));
1105 }
1106 
1107 static void rtsx_pci_idle_work(struct work_struct *work)
1108 {
1109 	struct delayed_work *dwork = to_delayed_work(work);
1110 	struct rtsx_pcr *pcr = container_of(dwork, struct rtsx_pcr, idle_work);
1111 
1112 	pcr_dbg(pcr, "--> %s\n", __func__);
1113 
1114 	mutex_lock(&pcr->pcr_mutex);
1115 
1116 	pcr->state = PDEV_STAT_IDLE;
1117 
1118 	if (pcr->ops->disable_auto_blink)
1119 		pcr->ops->disable_auto_blink(pcr);
1120 	if (pcr->ops->turn_off_led)
1121 		pcr->ops->turn_off_led(pcr);
1122 
1123 	rtsx_pm_power_saving(pcr);
1124 
1125 	mutex_unlock(&pcr->pcr_mutex);
1126 
1127 	if (pcr->rtd3_en)
1128 		mod_delayed_work(system_wq, &pcr->rtd3_work, msecs_to_jiffies(10000));
1129 }
1130 
1131 static void rtsx_base_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
1132 {
1133 	/* Set relink_time to 0 */
1134 	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, MASK_8_BIT_DEF, 0);
1135 	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, MASK_8_BIT_DEF, 0);
1136 	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3,
1137 			RELINK_TIME_MASK, 0);
1138 
1139 	rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
1140 			D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);
1141 
1142 	rtsx_pci_write_register(pcr, FPDCTL, ALL_POWER_DOWN, ALL_POWER_DOWN);
1143 }
1144 
1145 static void __maybe_unused rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state)
1146 {
1147 	if (pcr->ops->turn_off_led)
1148 		pcr->ops->turn_off_led(pcr);
1149 
1150 	rtsx_pci_writel(pcr, RTSX_BIER, 0);
1151 	pcr->bier = 0;
1152 
1153 	rtsx_pci_write_register(pcr, PETXCFG, 0x08, 0x08);
1154 	rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, pm_state);
1155 
1156 	if (pcr->ops->force_power_down)
1157 		pcr->ops->force_power_down(pcr, pm_state);
1158 	else
1159 		rtsx_base_force_power_down(pcr, pm_state);
1160 }
1161 
1162 void rtsx_pci_enable_ocp(struct rtsx_pcr *pcr)
1163 {
1164 	u8 val = SD_OCP_INT_EN | SD_DETECT_EN;
1165 
1166 	if (pcr->ops->enable_ocp) {
1167 		pcr->ops->enable_ocp(pcr);
1168 	} else {
1169 		rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN, 0);
1170 		rtsx_pci_write_register(pcr, REG_OCPCTL, 0xFF, val);
1171 	}
1172 
1173 }
1174 
1175 void rtsx_pci_disable_ocp(struct rtsx_pcr *pcr)
1176 {
1177 	u8 mask = SD_OCP_INT_EN | SD_DETECT_EN;
1178 
1179 	if (pcr->ops->disable_ocp) {
1180 		pcr->ops->disable_ocp(pcr);
1181 	} else {
1182 		rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
1183 		rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN,
1184 				OC_POWER_DOWN);
1185 	}
1186 }
1187 
1188 void rtsx_pci_init_ocp(struct rtsx_pcr *pcr)
1189 {
1190 	if (pcr->ops->init_ocp) {
1191 		pcr->ops->init_ocp(pcr);
1192 	} else {
1193 		struct rtsx_cr_option *option = &(pcr->option);
1194 
1195 		if (option->ocp_en) {
1196 			u8 val = option->sd_800mA_ocp_thd;
1197 
1198 			rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN, 0);
1199 			rtsx_pci_write_register(pcr, REG_OCPPARA1,
1200 				SD_OCP_TIME_MASK, SD_OCP_TIME_800);
1201 			rtsx_pci_write_register(pcr, REG_OCPPARA2,
1202 				SD_OCP_THD_MASK, val);
1203 			rtsx_pci_write_register(pcr, REG_OCPGLITCH,
1204 				SD_OCP_GLITCH_MASK, pcr->hw_param.ocp_glitch);
1205 			rtsx_pci_enable_ocp(pcr);
1206 		}
1207 	}
1208 }
1209 
1210 int rtsx_pci_get_ocpstat(struct rtsx_pcr *pcr, u8 *val)
1211 {
1212 	if (pcr->ops->get_ocpstat)
1213 		return pcr->ops->get_ocpstat(pcr, val);
1214 	else
1215 		return rtsx_pci_read_register(pcr, REG_OCPSTAT, val);
1216 }
1217 
1218 void rtsx_pci_clear_ocpstat(struct rtsx_pcr *pcr)
1219 {
1220 	if (pcr->ops->clear_ocpstat) {
1221 		pcr->ops->clear_ocpstat(pcr);
1222 	} else {
1223 		u8 mask = SD_OCP_INT_CLR | SD_OC_CLR;
1224 		u8 val = SD_OCP_INT_CLR | SD_OC_CLR;
1225 
1226 		rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val);
1227 		udelay(100);
1228 		rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
1229 	}
1230 }
1231 
1232 void rtsx_pci_enable_oobs_polling(struct rtsx_pcr *pcr)
1233 {
1234 	u16 val;
1235 
1236 	if ((PCI_PID(pcr) != PID_525A) && (PCI_PID(pcr) != PID_5260)) {
1237 		rtsx_pci_read_phy_register(pcr, 0x01, &val);
1238 		val |= 1<<9;
1239 		rtsx_pci_write_phy_register(pcr, 0x01, val);
1240 	}
1241 	rtsx_pci_write_register(pcr, REG_CFG_OOBS_OFF_TIMER, 0xFF, 0x32);
1242 	rtsx_pci_write_register(pcr, REG_CFG_OOBS_ON_TIMER, 0xFF, 0x05);
1243 	rtsx_pci_write_register(pcr, REG_CFG_VCM_ON_TIMER, 0xFF, 0x83);
1244 	rtsx_pci_write_register(pcr, REG_CFG_OOBS_POLLING, 0xFF, 0xDE);
1245 
1246 }
1247 
1248 void rtsx_pci_disable_oobs_polling(struct rtsx_pcr *pcr)
1249 {
1250 	u16 val;
1251 
1252 	if ((PCI_PID(pcr) != PID_525A) && (PCI_PID(pcr) != PID_5260)) {
1253 		rtsx_pci_read_phy_register(pcr, 0x01, &val);
1254 		val &= ~(1<<9);
1255 		rtsx_pci_write_phy_register(pcr, 0x01, val);
1256 	}
1257 	rtsx_pci_write_register(pcr, REG_CFG_VCM_ON_TIMER, 0xFF, 0x03);
1258 	rtsx_pci_write_register(pcr, REG_CFG_OOBS_POLLING, 0xFF, 0x00);
1259 
1260 }
1261 
1262 int rtsx_sd_power_off_card3v3(struct rtsx_pcr *pcr)
1263 {
1264 	rtsx_pci_write_register(pcr, CARD_CLK_EN, SD_CLK_EN |
1265 		MS_CLK_EN | SD40_CLK_EN, 0);
1266 	rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0);
1267 	rtsx_pci_card_power_off(pcr, RTSX_SD_CARD);
1268 
1269 	msleep(50);
1270 
1271 	rtsx_pci_card_pull_ctl_disable(pcr, RTSX_SD_CARD);
1272 
1273 	return 0;
1274 }
1275 
1276 int rtsx_ms_power_off_card3v3(struct rtsx_pcr *pcr)
1277 {
1278 	rtsx_pci_write_register(pcr, CARD_CLK_EN, SD_CLK_EN |
1279 		MS_CLK_EN | SD40_CLK_EN, 0);
1280 
1281 	rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD);
1282 
1283 	rtsx_pci_write_register(pcr, CARD_OE, MS_OUTPUT_EN, 0);
1284 	rtsx_pci_card_power_off(pcr, RTSX_MS_CARD);
1285 
1286 	return 0;
1287 }
1288 
1289 static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
1290 {
1291 	struct pci_dev *pdev = pcr->pci;
1292 	int err;
1293 
1294 	if (PCI_PID(pcr) == PID_5228)
1295 		rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG1, RTS5228_LDO1_SR_TIME_MASK,
1296 				RTS5228_LDO1_SR_0_5);
1297 
1298 	rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
1299 
1300 	rtsx_pci_enable_bus_int(pcr);
1301 
1302 	/* Power on SSC */
1303 	if (PCI_PID(pcr) == PID_5261) {
1304 		/* Gating real mcu clock */
1305 		err = rtsx_pci_write_register(pcr, RTS5261_FW_CFG1,
1306 			RTS5261_MCU_CLOCK_GATING, 0);
1307 		err = rtsx_pci_write_register(pcr, RTS5261_REG_FPDCTL,
1308 			SSC_POWER_DOWN, 0);
1309 	} else {
1310 		err = rtsx_pci_write_register(pcr, FPDCTL, SSC_POWER_DOWN, 0);
1311 	}
1312 	if (err < 0)
1313 		return err;
1314 
1315 	/* Wait SSC power stable */
1316 	udelay(200);
1317 
1318 	rtsx_disable_aspm(pcr);
1319 	if (pcr->ops->optimize_phy) {
1320 		err = pcr->ops->optimize_phy(pcr);
1321 		if (err < 0)
1322 			return err;
1323 	}
1324 
1325 	rtsx_pci_init_cmd(pcr);
1326 
1327 	/* Set mcu_cnt to 7 to ensure data can be sampled properly */
1328 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV, 0x07, 0x07);
1329 
1330 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, HOST_SLEEP_STATE, 0x03, 0x00);
1331 	/* Disable card clock */
1332 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, 0x1E, 0);
1333 	/* Reset delink mode */
1334 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CHANGE_LINK_STATE, 0x0A, 0);
1335 	/* Card driving select */
1336 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DRIVE_SEL,
1337 			0xFF, pcr->card_drive_sel);
1338 	/* Enable SSC Clock */
1339 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1,
1340 			0xFF, SSC_8X_EN | SSC_SEL_4M);
1341 	if (PCI_PID(pcr) == PID_5261)
1342 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF,
1343 			RTS5261_SSC_DEPTH_2M);
1344 	else if (PCI_PID(pcr) == PID_5228)
1345 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF,
1346 			RTS5228_SSC_DEPTH_2M);
1347 	else
1348 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF, 0x12);
1349 
1350 	/* Disable cd_pwr_save */
1351 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CHANGE_LINK_STATE, 0x16, 0x10);
1352 	/* Clear Link Ready Interrupt */
1353 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
1354 			LINK_RDY_INT, LINK_RDY_INT);
1355 	/* Enlarge the estimation window of PERST# glitch
1356 	 * to reduce the chance of invalid card interrupt
1357 	 */
1358 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PERST_GLITCH_WIDTH, 0xFF, 0x80);
1359 	/* Update RC oscillator to 400k
1360 	 * bit[0] F_HIGH: for RC oscillator, Rst_value is 1'b1
1361 	 *                1: 2M  0: 400k
1362 	 */
1363 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RCCTL, 0x01, 0x00);
1364 	/* Set interrupt write clear
1365 	 * bit 1: U_elbi_if_rd_clr_en
1366 	 *	1: Enable ELBI interrupt[31:22] & [7:0] flag read clear
1367 	 *	0: ELBI interrupt flag[31:22] & [7:0] only can be write clear
1368 	 */
1369 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, NFTS_TX_CTRL, 0x02, 0);
1370 
1371 	err = rtsx_pci_send_cmd(pcr, 100);
1372 	if (err < 0)
1373 		return err;
1374 
1375 	switch (PCI_PID(pcr)) {
1376 	case PID_5250:
1377 	case PID_524A:
1378 	case PID_525A:
1379 	case PID_5260:
1380 	case PID_5261:
1381 	case PID_5228:
1382 		rtsx_pci_write_register(pcr, PM_CLK_FORCE_CTL, 1, 1);
1383 		break;
1384 	default:
1385 		break;
1386 	}
1387 
1388 	/*init ocp*/
1389 	rtsx_pci_init_ocp(pcr);
1390 
1391 	/* Enable clk_request_n to enable clock power management */
1392 	pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
1393 					0, PCI_EXP_LNKCTL_CLKREQ_EN);
1394 	/* Enter L1 when host tx idle */
1395 	pci_write_config_byte(pdev, 0x70F, 0x5B);
1396 
1397 	if (pcr->ops->extra_init_hw) {
1398 		err = pcr->ops->extra_init_hw(pcr);
1399 		if (err < 0)
1400 			return err;
1401 	}
1402 
1403 	if (pcr->aspm_mode == ASPM_MODE_REG)
1404 		rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0x30, 0x30);
1405 
1406 	/* No CD interrupt if probing driver with card inserted.
1407 	 * So we need to initialize pcr->card_exist here.
1408 	 */
1409 	if (pcr->ops->cd_deglitch)
1410 		pcr->card_exist = pcr->ops->cd_deglitch(pcr);
1411 	else
1412 		pcr->card_exist = rtsx_pci_readl(pcr, RTSX_BIPR) & CARD_EXIST;
1413 
1414 	return 0;
1415 }
1416 
1417 static int rtsx_pci_init_chip(struct rtsx_pcr *pcr)
1418 {
1419 	int err;
1420 	u16 cfg_val;
1421 	u8 val;
1422 
1423 	spin_lock_init(&pcr->lock);
1424 	mutex_init(&pcr->pcr_mutex);
1425 
1426 	switch (PCI_PID(pcr)) {
1427 	default:
1428 	case 0x5209:
1429 		rts5209_init_params(pcr);
1430 		break;
1431 
1432 	case 0x5229:
1433 		rts5229_init_params(pcr);
1434 		break;
1435 
1436 	case 0x5289:
1437 		rtl8411_init_params(pcr);
1438 		break;
1439 
1440 	case 0x5227:
1441 		rts5227_init_params(pcr);
1442 		break;
1443 
1444 	case 0x522A:
1445 		rts522a_init_params(pcr);
1446 		break;
1447 
1448 	case 0x5249:
1449 		rts5249_init_params(pcr);
1450 		break;
1451 
1452 	case 0x524A:
1453 		rts524a_init_params(pcr);
1454 		break;
1455 
1456 	case 0x525A:
1457 		rts525a_init_params(pcr);
1458 		break;
1459 
1460 	case 0x5287:
1461 		rtl8411b_init_params(pcr);
1462 		break;
1463 
1464 	case 0x5286:
1465 		rtl8402_init_params(pcr);
1466 		break;
1467 
1468 	case 0x5260:
1469 		rts5260_init_params(pcr);
1470 		break;
1471 
1472 	case 0x5261:
1473 		rts5261_init_params(pcr);
1474 		break;
1475 
1476 	case 0x5228:
1477 		rts5228_init_params(pcr);
1478 		break;
1479 	}
1480 
1481 	pcr_dbg(pcr, "PID: 0x%04x, IC version: 0x%02x\n",
1482 			PCI_PID(pcr), pcr->ic_version);
1483 
1484 	pcr->slots = kcalloc(pcr->num_slots, sizeof(struct rtsx_slot),
1485 			GFP_KERNEL);
1486 	if (!pcr->slots)
1487 		return -ENOMEM;
1488 
1489 	if (pcr->aspm_mode == ASPM_MODE_CFG) {
1490 		pcie_capability_read_word(pcr->pci, PCI_EXP_LNKCTL, &cfg_val);
1491 		if (cfg_val & PCI_EXP_LNKCTL_ASPM_L1)
1492 			pcr->aspm_enabled = true;
1493 		else
1494 			pcr->aspm_enabled = false;
1495 
1496 	} else if (pcr->aspm_mode == ASPM_MODE_REG) {
1497 		rtsx_pci_read_register(pcr, ASPM_FORCE_CTL, &val);
1498 		if (val & FORCE_ASPM_CTL0 && val & FORCE_ASPM_CTL1)
1499 			pcr->aspm_enabled = false;
1500 		else
1501 			pcr->aspm_enabled = true;
1502 	}
1503 
1504 	if (pcr->ops->fetch_vendor_settings)
1505 		pcr->ops->fetch_vendor_settings(pcr);
1506 
1507 	pcr_dbg(pcr, "pcr->aspm_en = 0x%x\n", pcr->aspm_en);
1508 	pcr_dbg(pcr, "pcr->sd30_drive_sel_1v8 = 0x%x\n",
1509 			pcr->sd30_drive_sel_1v8);
1510 	pcr_dbg(pcr, "pcr->sd30_drive_sel_3v3 = 0x%x\n",
1511 			pcr->sd30_drive_sel_3v3);
1512 	pcr_dbg(pcr, "pcr->card_drive_sel = 0x%x\n",
1513 			pcr->card_drive_sel);
1514 	pcr_dbg(pcr, "pcr->flags = 0x%x\n", pcr->flags);
1515 
1516 	pcr->state = PDEV_STAT_IDLE;
1517 	err = rtsx_pci_init_hw(pcr);
1518 	if (err < 0) {
1519 		kfree(pcr->slots);
1520 		return err;
1521 	}
1522 
1523 	return 0;
1524 }
1525 
1526 static int rtsx_pci_probe(struct pci_dev *pcidev,
1527 			  const struct pci_device_id *id)
1528 {
1529 	struct rtsx_pcr *pcr;
1530 	struct pcr_handle *handle;
1531 	u32 base, len;
1532 	int ret, i, bar = 0;
1533 
1534 	dev_dbg(&(pcidev->dev),
1535 		": Realtek PCI-E Card Reader found at %s [%04x:%04x] (rev %x)\n",
1536 		pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
1537 		(int)pcidev->revision);
1538 
1539 	ret = dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32));
1540 	if (ret < 0)
1541 		return ret;
1542 
1543 	ret = pci_enable_device(pcidev);
1544 	if (ret)
1545 		return ret;
1546 
1547 	ret = pci_request_regions(pcidev, DRV_NAME_RTSX_PCI);
1548 	if (ret)
1549 		goto disable;
1550 
1551 	pcr = kzalloc(sizeof(*pcr), GFP_KERNEL);
1552 	if (!pcr) {
1553 		ret = -ENOMEM;
1554 		goto release_pci;
1555 	}
1556 
1557 	handle = kzalloc(sizeof(*handle), GFP_KERNEL);
1558 	if (!handle) {
1559 		ret = -ENOMEM;
1560 		goto free_pcr;
1561 	}
1562 	handle->pcr = pcr;
1563 
1564 	idr_preload(GFP_KERNEL);
1565 	spin_lock(&rtsx_pci_lock);
1566 	ret = idr_alloc(&rtsx_pci_idr, pcr, 0, 0, GFP_NOWAIT);
1567 	if (ret >= 0)
1568 		pcr->id = ret;
1569 	spin_unlock(&rtsx_pci_lock);
1570 	idr_preload_end();
1571 	if (ret < 0)
1572 		goto free_handle;
1573 
1574 	pcr->pci = pcidev;
1575 	dev_set_drvdata(&pcidev->dev, handle);
1576 
1577 	if (CHK_PCI_PID(pcr, 0x525A))
1578 		bar = 1;
1579 	len = pci_resource_len(pcidev, bar);
1580 	base = pci_resource_start(pcidev, bar);
1581 	pcr->remap_addr = ioremap(base, len);
1582 	if (!pcr->remap_addr) {
1583 		ret = -ENOMEM;
1584 		goto free_handle;
1585 	}
1586 
1587 	pcr->rtsx_resv_buf = dma_alloc_coherent(&(pcidev->dev),
1588 			RTSX_RESV_BUF_LEN, &(pcr->rtsx_resv_buf_addr),
1589 			GFP_KERNEL);
1590 	if (pcr->rtsx_resv_buf == NULL) {
1591 		ret = -ENXIO;
1592 		goto unmap;
1593 	}
1594 	pcr->host_cmds_ptr = pcr->rtsx_resv_buf;
1595 	pcr->host_cmds_addr = pcr->rtsx_resv_buf_addr;
1596 	pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
1597 	pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN;
1598 	pcr->card_inserted = 0;
1599 	pcr->card_removed = 0;
1600 	INIT_DELAYED_WORK(&pcr->carddet_work, rtsx_pci_card_detect);
1601 	INIT_DELAYED_WORK(&pcr->idle_work, rtsx_pci_idle_work);
1602 
1603 	pcr->msi_en = msi_en;
1604 	if (pcr->msi_en) {
1605 		ret = pci_enable_msi(pcidev);
1606 		if (ret)
1607 			pcr->msi_en = false;
1608 	}
1609 
1610 	ret = rtsx_pci_acquire_irq(pcr);
1611 	if (ret < 0)
1612 		goto disable_msi;
1613 
1614 	pci_set_master(pcidev);
1615 	synchronize_irq(pcr->irq);
1616 
1617 	ret = rtsx_pci_init_chip(pcr);
1618 	if (ret < 0)
1619 		goto disable_irq;
1620 
1621 	for (i = 0; i < ARRAY_SIZE(rtsx_pcr_cells); i++) {
1622 		rtsx_pcr_cells[i].platform_data = handle;
1623 		rtsx_pcr_cells[i].pdata_size = sizeof(*handle);
1624 	}
1625 
1626 	if (pcr->rtd3_en) {
1627 		INIT_DELAYED_WORK(&pcr->rtd3_work, rtsx_pci_rtd3_work);
1628 		pm_runtime_allow(&pcidev->dev);
1629 		pm_runtime_enable(&pcidev->dev);
1630 		pcr->is_runtime_suspended = false;
1631 	}
1632 
1633 
1634 	ret = mfd_add_devices(&pcidev->dev, pcr->id, rtsx_pcr_cells,
1635 			ARRAY_SIZE(rtsx_pcr_cells), NULL, 0, NULL);
1636 	if (ret < 0)
1637 		goto free_slots;
1638 
1639 	schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200));
1640 
1641 	return 0;
1642 
1643 free_slots:
1644 	kfree(pcr->slots);
1645 disable_irq:
1646 	free_irq(pcr->irq, (void *)pcr);
1647 disable_msi:
1648 	if (pcr->msi_en)
1649 		pci_disable_msi(pcr->pci);
1650 	dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN,
1651 			pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
1652 unmap:
1653 	iounmap(pcr->remap_addr);
1654 free_handle:
1655 	kfree(handle);
1656 free_pcr:
1657 	kfree(pcr);
1658 release_pci:
1659 	pci_release_regions(pcidev);
1660 disable:
1661 	pci_disable_device(pcidev);
1662 
1663 	return ret;
1664 }
1665 
1666 static void rtsx_pci_remove(struct pci_dev *pcidev)
1667 {
1668 	struct pcr_handle *handle = pci_get_drvdata(pcidev);
1669 	struct rtsx_pcr *pcr = handle->pcr;
1670 
1671 	if (pcr->rtd3_en)
1672 		pm_runtime_get_noresume(&pcr->pci->dev);
1673 
1674 	pcr->remove_pci = true;
1675 
1676 	/* Disable interrupts at the pcr level */
1677 	spin_lock_irq(&pcr->lock);
1678 	rtsx_pci_writel(pcr, RTSX_BIER, 0);
1679 	pcr->bier = 0;
1680 	spin_unlock_irq(&pcr->lock);
1681 
1682 	cancel_delayed_work_sync(&pcr->carddet_work);
1683 	cancel_delayed_work_sync(&pcr->idle_work);
1684 	if (pcr->rtd3_en)
1685 		cancel_delayed_work_sync(&pcr->rtd3_work);
1686 
1687 	mfd_remove_devices(&pcidev->dev);
1688 
1689 	dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN,
1690 			pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
1691 	free_irq(pcr->irq, (void *)pcr);
1692 	if (pcr->msi_en)
1693 		pci_disable_msi(pcr->pci);
1694 	iounmap(pcr->remap_addr);
1695 
1696 	pci_release_regions(pcidev);
1697 	pci_disable_device(pcidev);
1698 
1699 	spin_lock(&rtsx_pci_lock);
1700 	idr_remove(&rtsx_pci_idr, pcr->id);
1701 	spin_unlock(&rtsx_pci_lock);
1702 
1703 	if (pcr->rtd3_en) {
1704 		pm_runtime_disable(&pcr->pci->dev);
1705 		pm_runtime_put_noidle(&pcr->pci->dev);
1706 	}
1707 
1708 	kfree(pcr->slots);
1709 	kfree(pcr);
1710 	kfree(handle);
1711 
1712 	dev_dbg(&(pcidev->dev),
1713 		": Realtek PCI-E Card Reader at %s [%04x:%04x] has been removed\n",
1714 		pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device);
1715 }
1716 
1717 static int __maybe_unused rtsx_pci_suspend(struct device *dev_d)
1718 {
1719 	struct pci_dev *pcidev = to_pci_dev(dev_d);
1720 	struct pcr_handle *handle;
1721 	struct rtsx_pcr *pcr;
1722 
1723 	dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
1724 
1725 	handle = pci_get_drvdata(pcidev);
1726 	pcr = handle->pcr;
1727 
1728 	cancel_delayed_work(&pcr->carddet_work);
1729 	cancel_delayed_work(&pcr->idle_work);
1730 
1731 	mutex_lock(&pcr->pcr_mutex);
1732 
1733 	rtsx_pci_power_off(pcr, HOST_ENTER_S3);
1734 
1735 	device_wakeup_disable(dev_d);
1736 
1737 	mutex_unlock(&pcr->pcr_mutex);
1738 	return 0;
1739 }
1740 
1741 static int __maybe_unused rtsx_pci_resume(struct device *dev_d)
1742 {
1743 	struct pci_dev *pcidev = to_pci_dev(dev_d);
1744 	struct pcr_handle *handle;
1745 	struct rtsx_pcr *pcr;
1746 	int ret = 0;
1747 
1748 	dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
1749 
1750 	handle = pci_get_drvdata(pcidev);
1751 	pcr = handle->pcr;
1752 
1753 	mutex_lock(&pcr->pcr_mutex);
1754 
1755 	ret = rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x00);
1756 	if (ret)
1757 		goto out;
1758 
1759 	ret = rtsx_pci_init_hw(pcr);
1760 	if (ret)
1761 		goto out;
1762 
1763 	schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200));
1764 
1765 out:
1766 	mutex_unlock(&pcr->pcr_mutex);
1767 	return ret;
1768 }
1769 
1770 #ifdef CONFIG_PM
1771 
1772 static void rtsx_pci_shutdown(struct pci_dev *pcidev)
1773 {
1774 	struct pcr_handle *handle;
1775 	struct rtsx_pcr *pcr;
1776 
1777 	dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
1778 
1779 	handle = pci_get_drvdata(pcidev);
1780 	pcr = handle->pcr;
1781 	rtsx_pci_power_off(pcr, HOST_ENTER_S1);
1782 
1783 	pci_disable_device(pcidev);
1784 	free_irq(pcr->irq, (void *)pcr);
1785 	if (pcr->msi_en)
1786 		pci_disable_msi(pcr->pci);
1787 }
1788 
1789 static int rtsx_pci_runtime_suspend(struct device *device)
1790 {
1791 	struct pci_dev *pcidev = to_pci_dev(device);
1792 	struct pcr_handle *handle;
1793 	struct rtsx_pcr *pcr;
1794 
1795 	handle = pci_get_drvdata(pcidev);
1796 	pcr = handle->pcr;
1797 	dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
1798 
1799 	cancel_delayed_work(&pcr->carddet_work);
1800 	cancel_delayed_work(&pcr->rtd3_work);
1801 	cancel_delayed_work(&pcr->idle_work);
1802 
1803 	mutex_lock(&pcr->pcr_mutex);
1804 	rtsx_pci_power_off(pcr, HOST_ENTER_S3);
1805 
1806 	mutex_unlock(&pcr->pcr_mutex);
1807 
1808 	pcr->is_runtime_suspended = true;
1809 
1810 	return 0;
1811 }
1812 
1813 static int rtsx_pci_runtime_resume(struct device *device)
1814 {
1815 	struct pci_dev *pcidev = to_pci_dev(device);
1816 	struct pcr_handle *handle;
1817 	struct rtsx_pcr *pcr;
1818 
1819 	handle = pci_get_drvdata(pcidev);
1820 	pcr = handle->pcr;
1821 	dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
1822 
1823 	mutex_lock(&pcr->pcr_mutex);
1824 
1825 	rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x00);
1826 
1827 	if (pcr->ops->fetch_vendor_settings)
1828 		pcr->ops->fetch_vendor_settings(pcr);
1829 
1830 	rtsx_pci_init_hw(pcr);
1831 
1832 	if (pcr->slots[RTSX_SD_CARD].p_dev != NULL) {
1833 		pcr->slots[RTSX_SD_CARD].card_event(
1834 				pcr->slots[RTSX_SD_CARD].p_dev);
1835 	}
1836 
1837 	schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200));
1838 
1839 	mutex_unlock(&pcr->pcr_mutex);
1840 	return 0;
1841 }
1842 
1843 #else /* CONFIG_PM */
1844 
1845 #define rtsx_pci_shutdown NULL
1846 #define rtsx_pci_runtime_suspend NULL
1847 #define rtsx_pic_runtime_resume NULL
1848 
1849 #endif /* CONFIG_PM */
1850 
1851 static const struct dev_pm_ops rtsx_pci_pm_ops = {
1852 	SET_SYSTEM_SLEEP_PM_OPS(rtsx_pci_suspend, rtsx_pci_resume)
1853 	SET_RUNTIME_PM_OPS(rtsx_pci_runtime_suspend, rtsx_pci_runtime_resume, NULL)
1854 };
1855 
1856 static struct pci_driver rtsx_pci_driver = {
1857 	.name = DRV_NAME_RTSX_PCI,
1858 	.id_table = rtsx_pci_ids,
1859 	.probe = rtsx_pci_probe,
1860 	.remove = rtsx_pci_remove,
1861 	.driver.pm = &rtsx_pci_pm_ops,
1862 	.shutdown = rtsx_pci_shutdown,
1863 };
1864 module_pci_driver(rtsx_pci_driver);
1865 
1866 MODULE_LICENSE("GPL");
1867 MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>");
1868 MODULE_DESCRIPTION("Realtek PCI-E Card Reader Driver");
1869