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 <linux/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 #include "rts5264.h" 30 31 static bool msi_en = true; 32 module_param(msi_en, bool, S_IRUGO | S_IWUSR); 33 MODULE_PARM_DESC(msi_en, "Enable MSI"); 34 35 static DEFINE_IDR(rtsx_pci_idr); 36 static DEFINE_SPINLOCK(rtsx_pci_lock); 37 38 static struct mfd_cell rtsx_pcr_cells[] = { 39 [RTSX_SD_CARD] = { 40 .name = DRV_NAME_RTSX_PCI_SDMMC, 41 }, 42 }; 43 44 static const struct pci_device_id rtsx_pci_ids[] = { 45 { PCI_DEVICE(0x10EC, 0x5209), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 46 { PCI_DEVICE(0x10EC, 0x5229), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 47 { PCI_DEVICE(0x10EC, 0x5289), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 48 { PCI_DEVICE(0x10EC, 0x5227), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 49 { PCI_DEVICE(0x10EC, 0x522A), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 50 { PCI_DEVICE(0x10EC, 0x5249), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 51 { PCI_DEVICE(0x10EC, 0x5287), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 52 { PCI_DEVICE(0x10EC, 0x5286), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 53 { PCI_DEVICE(0x10EC, 0x524A), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 54 { PCI_DEVICE(0x10EC, 0x525A), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 55 { PCI_DEVICE(0x10EC, 0x5260), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 56 { PCI_DEVICE(0x10EC, 0x5261), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 57 { PCI_DEVICE(0x10EC, 0x5228), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 58 { PCI_DEVICE(0x10EC, 0x5264), PCI_CLASS_OTHERS << 16, 0xFF0000 }, 59 { 0, } 60 }; 61 62 MODULE_DEVICE_TABLE(pci, rtsx_pci_ids); 63 rtsx_comm_set_ltr_latency(struct rtsx_pcr * pcr,u32 latency)64 static int rtsx_comm_set_ltr_latency(struct rtsx_pcr *pcr, u32 latency) 65 { 66 rtsx_pci_write_register(pcr, MSGTXDATA0, 67 MASK_8_BIT_DEF, (u8) (latency & 0xFF)); 68 rtsx_pci_write_register(pcr, MSGTXDATA1, 69 MASK_8_BIT_DEF, (u8)((latency >> 8) & 0xFF)); 70 rtsx_pci_write_register(pcr, MSGTXDATA2, 71 MASK_8_BIT_DEF, (u8)((latency >> 16) & 0xFF)); 72 rtsx_pci_write_register(pcr, MSGTXDATA3, 73 MASK_8_BIT_DEF, (u8)((latency >> 24) & 0xFF)); 74 rtsx_pci_write_register(pcr, LTR_CTL, LTR_TX_EN_MASK | 75 LTR_LATENCY_MODE_MASK, LTR_TX_EN_1 | LTR_LATENCY_MODE_SW); 76 77 return 0; 78 } 79 rtsx_set_ltr_latency(struct rtsx_pcr * pcr,u32 latency)80 int rtsx_set_ltr_latency(struct rtsx_pcr *pcr, u32 latency) 81 { 82 return rtsx_comm_set_ltr_latency(pcr, latency); 83 } 84 rtsx_comm_set_aspm(struct rtsx_pcr * pcr,bool enable)85 static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable) 86 { 87 if (pcr->aspm_enabled == enable) 88 return; 89 90 if (pcr->aspm_mode == ASPM_MODE_CFG) { 91 pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL, 92 PCI_EXP_LNKCTL_ASPMC, 93 enable ? pcr->aspm_en : 0); 94 } else if (pcr->aspm_mode == ASPM_MODE_REG) { 95 if (pcr->aspm_en & 0x02) 96 rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 | 97 FORCE_ASPM_CTL1, enable ? 0 : FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1); 98 else 99 rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 | 100 FORCE_ASPM_CTL1, FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1); 101 } 102 103 if (!enable && (pcr->aspm_en & 0x02)) 104 mdelay(10); 105 106 pcr->aspm_enabled = enable; 107 } 108 rtsx_disable_aspm(struct rtsx_pcr * pcr)109 static void rtsx_disable_aspm(struct rtsx_pcr *pcr) 110 { 111 if (pcr->ops->set_aspm) 112 pcr->ops->set_aspm(pcr, false); 113 else 114 rtsx_comm_set_aspm(pcr, false); 115 } 116 rtsx_set_l1off_sub(struct rtsx_pcr * pcr,u8 val)117 int rtsx_set_l1off_sub(struct rtsx_pcr *pcr, u8 val) 118 { 119 rtsx_pci_write_register(pcr, L1SUB_CONFIG3, 0xFF, val); 120 121 return 0; 122 } 123 rtsx_set_l1off_sub_cfg_d0(struct rtsx_pcr * pcr,int active)124 static void rtsx_set_l1off_sub_cfg_d0(struct rtsx_pcr *pcr, int active) 125 { 126 if (pcr->ops->set_l1off_cfg_sub_d0) 127 pcr->ops->set_l1off_cfg_sub_d0(pcr, active); 128 } 129 rtsx_comm_pm_full_on(struct rtsx_pcr * pcr)130 static void rtsx_comm_pm_full_on(struct rtsx_pcr *pcr) 131 { 132 struct rtsx_cr_option *option = &pcr->option; 133 134 rtsx_disable_aspm(pcr); 135 136 /* Fixes DMA transfer timeout issue after disabling ASPM on RTS5260 */ 137 msleep(1); 138 139 if (option->ltr_enabled) 140 rtsx_set_ltr_latency(pcr, option->ltr_active_latency); 141 142 if (rtsx_check_dev_flag(pcr, LTR_L1SS_PWR_GATE_EN)) 143 rtsx_set_l1off_sub_cfg_d0(pcr, 1); 144 } 145 rtsx_pm_full_on(struct rtsx_pcr * pcr)146 static void rtsx_pm_full_on(struct rtsx_pcr *pcr) 147 { 148 rtsx_comm_pm_full_on(pcr); 149 } 150 rtsx_pci_start_run(struct rtsx_pcr * pcr)151 void rtsx_pci_start_run(struct rtsx_pcr *pcr) 152 { 153 /* If pci device removed, don't queue idle work any more */ 154 if (pcr->remove_pci) 155 return; 156 157 if (pcr->state != PDEV_STAT_RUN) { 158 pcr->state = PDEV_STAT_RUN; 159 if (pcr->ops->enable_auto_blink) 160 pcr->ops->enable_auto_blink(pcr); 161 rtsx_pm_full_on(pcr); 162 } 163 } 164 EXPORT_SYMBOL_GPL(rtsx_pci_start_run); 165 rtsx_pci_write_register(struct rtsx_pcr * pcr,u16 addr,u8 mask,u8 data)166 int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data) 167 { 168 int i; 169 u32 val = HAIMR_WRITE_START; 170 171 val |= (u32)(addr & 0x3FFF) << 16; 172 val |= (u32)mask << 8; 173 val |= (u32)data; 174 175 rtsx_pci_writel(pcr, RTSX_HAIMR, val); 176 177 for (i = 0; i < MAX_RW_REG_CNT; i++) { 178 val = rtsx_pci_readl(pcr, RTSX_HAIMR); 179 if ((val & HAIMR_TRANS_END) == 0) { 180 if (data != (u8)val) 181 return -EIO; 182 return 0; 183 } 184 } 185 186 return -ETIMEDOUT; 187 } 188 EXPORT_SYMBOL_GPL(rtsx_pci_write_register); 189 rtsx_pci_read_register(struct rtsx_pcr * pcr,u16 addr,u8 * data)190 int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data) 191 { 192 u32 val = HAIMR_READ_START; 193 int i; 194 195 val |= (u32)(addr & 0x3FFF) << 16; 196 rtsx_pci_writel(pcr, RTSX_HAIMR, val); 197 198 for (i = 0; i < MAX_RW_REG_CNT; i++) { 199 val = rtsx_pci_readl(pcr, RTSX_HAIMR); 200 if ((val & HAIMR_TRANS_END) == 0) 201 break; 202 } 203 204 if (i >= MAX_RW_REG_CNT) 205 return -ETIMEDOUT; 206 207 if (data) 208 *data = (u8)(val & 0xFF); 209 210 return 0; 211 } 212 EXPORT_SYMBOL_GPL(rtsx_pci_read_register); 213 __rtsx_pci_write_phy_register(struct rtsx_pcr * pcr,u8 addr,u16 val)214 int __rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val) 215 { 216 int err, i, finished = 0; 217 u8 tmp; 218 219 rtsx_pci_write_register(pcr, PHYDATA0, 0xFF, (u8)val); 220 rtsx_pci_write_register(pcr, PHYDATA1, 0xFF, (u8)(val >> 8)); 221 rtsx_pci_write_register(pcr, PHYADDR, 0xFF, addr); 222 rtsx_pci_write_register(pcr, PHYRWCTL, 0xFF, 0x81); 223 224 for (i = 0; i < 100000; i++) { 225 err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp); 226 if (err < 0) 227 return err; 228 229 if (!(tmp & 0x80)) { 230 finished = 1; 231 break; 232 } 233 } 234 235 if (!finished) 236 return -ETIMEDOUT; 237 238 return 0; 239 } 240 rtsx_pci_write_phy_register(struct rtsx_pcr * pcr,u8 addr,u16 val)241 int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val) 242 { 243 if (pcr->ops->write_phy) 244 return pcr->ops->write_phy(pcr, addr, val); 245 246 return __rtsx_pci_write_phy_register(pcr, addr, val); 247 } 248 EXPORT_SYMBOL_GPL(rtsx_pci_write_phy_register); 249 __rtsx_pci_read_phy_register(struct rtsx_pcr * pcr,u8 addr,u16 * val)250 int __rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val) 251 { 252 int err, i, finished = 0; 253 u16 data; 254 u8 tmp, val1, val2; 255 256 rtsx_pci_write_register(pcr, PHYADDR, 0xFF, addr); 257 rtsx_pci_write_register(pcr, PHYRWCTL, 0xFF, 0x80); 258 259 for (i = 0; i < 100000; i++) { 260 err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp); 261 if (err < 0) 262 return err; 263 264 if (!(tmp & 0x80)) { 265 finished = 1; 266 break; 267 } 268 } 269 270 if (!finished) 271 return -ETIMEDOUT; 272 273 rtsx_pci_read_register(pcr, PHYDATA0, &val1); 274 rtsx_pci_read_register(pcr, PHYDATA1, &val2); 275 data = val1 | (val2 << 8); 276 277 if (val) 278 *val = data; 279 280 return 0; 281 } 282 rtsx_pci_read_phy_register(struct rtsx_pcr * pcr,u8 addr,u16 * val)283 int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val) 284 { 285 if (pcr->ops->read_phy) 286 return pcr->ops->read_phy(pcr, addr, val); 287 288 return __rtsx_pci_read_phy_register(pcr, addr, val); 289 } 290 EXPORT_SYMBOL_GPL(rtsx_pci_read_phy_register); 291 rtsx_pci_stop_cmd(struct rtsx_pcr * pcr)292 void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr) 293 { 294 if (pcr->ops->stop_cmd) 295 return pcr->ops->stop_cmd(pcr); 296 297 rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD); 298 rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA); 299 300 rtsx_pci_write_register(pcr, DMACTL, 0x80, 0x80); 301 rtsx_pci_write_register(pcr, RBCTL, 0x80, 0x80); 302 } 303 EXPORT_SYMBOL_GPL(rtsx_pci_stop_cmd); 304 rtsx_pci_add_cmd(struct rtsx_pcr * pcr,u8 cmd_type,u16 reg_addr,u8 mask,u8 data)305 void rtsx_pci_add_cmd(struct rtsx_pcr *pcr, 306 u8 cmd_type, u16 reg_addr, u8 mask, u8 data) 307 { 308 unsigned long flags; 309 u32 val = 0; 310 u32 *ptr = (u32 *)(pcr->host_cmds_ptr); 311 312 val |= (u32)(cmd_type & 0x03) << 30; 313 val |= (u32)(reg_addr & 0x3FFF) << 16; 314 val |= (u32)mask << 8; 315 val |= (u32)data; 316 317 spin_lock_irqsave(&pcr->lock, flags); 318 ptr += pcr->ci; 319 if (pcr->ci < (HOST_CMDS_BUF_LEN / 4)) { 320 put_unaligned_le32(val, ptr); 321 ptr++; 322 pcr->ci++; 323 } 324 spin_unlock_irqrestore(&pcr->lock, flags); 325 } 326 EXPORT_SYMBOL_GPL(rtsx_pci_add_cmd); 327 rtsx_pci_send_cmd_no_wait(struct rtsx_pcr * pcr)328 void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr) 329 { 330 u32 val = 1 << 31; 331 332 rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr); 333 334 val |= (u32)(pcr->ci * 4) & 0x00FFFFFF; 335 /* Hardware Auto Response */ 336 val |= 0x40000000; 337 rtsx_pci_writel(pcr, RTSX_HCBCTLR, val); 338 } 339 EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd_no_wait); 340 rtsx_pci_send_cmd(struct rtsx_pcr * pcr,int timeout)341 int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout) 342 { 343 struct completion trans_done; 344 u32 val = 1 << 31; 345 long timeleft; 346 unsigned long flags; 347 int err = 0; 348 349 spin_lock_irqsave(&pcr->lock, flags); 350 351 /* set up data structures for the wakeup system */ 352 pcr->done = &trans_done; 353 pcr->trans_result = TRANS_NOT_READY; 354 init_completion(&trans_done); 355 356 rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr); 357 358 val |= (u32)(pcr->ci * 4) & 0x00FFFFFF; 359 /* Hardware Auto Response */ 360 val |= 0x40000000; 361 rtsx_pci_writel(pcr, RTSX_HCBCTLR, val); 362 363 spin_unlock_irqrestore(&pcr->lock, flags); 364 365 /* Wait for TRANS_OK_INT */ 366 timeleft = wait_for_completion_interruptible_timeout( 367 &trans_done, msecs_to_jiffies(timeout)); 368 if (timeleft <= 0) { 369 pcr_dbg(pcr, "Timeout (%s %d)\n", __func__, __LINE__); 370 err = -ETIMEDOUT; 371 goto finish_send_cmd; 372 } 373 374 spin_lock_irqsave(&pcr->lock, flags); 375 if (pcr->trans_result == TRANS_RESULT_FAIL) 376 err = -EINVAL; 377 else if (pcr->trans_result == TRANS_RESULT_OK) 378 err = 0; 379 else if (pcr->trans_result == TRANS_NO_DEVICE) 380 err = -ENODEV; 381 spin_unlock_irqrestore(&pcr->lock, flags); 382 383 finish_send_cmd: 384 spin_lock_irqsave(&pcr->lock, flags); 385 pcr->done = NULL; 386 spin_unlock_irqrestore(&pcr->lock, flags); 387 388 if ((err < 0) && (err != -ENODEV)) 389 rtsx_pci_stop_cmd(pcr); 390 391 if (pcr->finish_me) 392 complete(pcr->finish_me); 393 394 return err; 395 } 396 EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd); 397 rtsx_pci_add_sg_tbl(struct rtsx_pcr * pcr,dma_addr_t addr,unsigned int len,int end)398 static void rtsx_pci_add_sg_tbl(struct rtsx_pcr *pcr, 399 dma_addr_t addr, unsigned int len, int end) 400 { 401 u64 *ptr = (u64 *)(pcr->host_sg_tbl_ptr) + pcr->sgi; 402 u64 val; 403 u8 option = RTSX_SG_VALID | RTSX_SG_TRANS_DATA; 404 405 pcr_dbg(pcr, "DMA addr: 0x%x, Len: 0x%x\n", (unsigned int)addr, len); 406 407 if (end) 408 option |= RTSX_SG_END; 409 410 if ((PCI_PID(pcr) == PID_5261) || (PCI_PID(pcr) == PID_5228)) { 411 if (len > 0xFFFF) 412 val = ((u64)addr << 32) | (((u64)len & 0xFFFF) << 16) 413 | (((u64)len >> 16) << 6) | option; 414 else 415 val = ((u64)addr << 32) | ((u64)len << 16) | option; 416 } else { 417 val = ((u64)addr << 32) | ((u64)len << 12) | option; 418 } 419 put_unaligned_le64(val, ptr); 420 pcr->sgi++; 421 } 422 rtsx_pci_transfer_data(struct rtsx_pcr * pcr,struct scatterlist * sglist,int num_sg,bool read,int timeout)423 int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist, 424 int num_sg, bool read, int timeout) 425 { 426 int err = 0, count; 427 428 pcr_dbg(pcr, "--> %s: num_sg = %d\n", __func__, num_sg); 429 count = rtsx_pci_dma_map_sg(pcr, sglist, num_sg, read); 430 if (count < 1) 431 return -EINVAL; 432 pcr_dbg(pcr, "DMA mapping count: %d\n", count); 433 434 err = rtsx_pci_dma_transfer(pcr, sglist, count, read, timeout); 435 436 rtsx_pci_dma_unmap_sg(pcr, sglist, num_sg, read); 437 438 return err; 439 } 440 EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data); 441 rtsx_pci_dma_map_sg(struct rtsx_pcr * pcr,struct scatterlist * sglist,int num_sg,bool read)442 int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist, 443 int num_sg, bool read) 444 { 445 enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE; 446 447 if (pcr->remove_pci) 448 return -EINVAL; 449 450 if ((sglist == NULL) || (num_sg <= 0)) 451 return -EINVAL; 452 453 return dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dir); 454 } 455 EXPORT_SYMBOL_GPL(rtsx_pci_dma_map_sg); 456 rtsx_pci_dma_unmap_sg(struct rtsx_pcr * pcr,struct scatterlist * sglist,int num_sg,bool read)457 void rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist, 458 int num_sg, bool read) 459 { 460 enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE; 461 462 dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dir); 463 } 464 EXPORT_SYMBOL_GPL(rtsx_pci_dma_unmap_sg); 465 rtsx_pci_dma_transfer(struct rtsx_pcr * pcr,struct scatterlist * sglist,int count,bool read,int timeout)466 int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist, 467 int count, bool read, int timeout) 468 { 469 struct completion trans_done; 470 struct scatterlist *sg; 471 dma_addr_t addr; 472 long timeleft; 473 unsigned long flags; 474 unsigned int len; 475 int i, err = 0; 476 u32 val; 477 u8 dir = read ? DEVICE_TO_HOST : HOST_TO_DEVICE; 478 479 if (pcr->remove_pci) 480 return -ENODEV; 481 482 if ((sglist == NULL) || (count < 1)) 483 return -EINVAL; 484 485 val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE; 486 pcr->sgi = 0; 487 for_each_sg(sglist, sg, count, i) { 488 addr = sg_dma_address(sg); 489 len = sg_dma_len(sg); 490 rtsx_pci_add_sg_tbl(pcr, addr, len, i == count - 1); 491 } 492 493 spin_lock_irqsave(&pcr->lock, flags); 494 495 pcr->done = &trans_done; 496 pcr->trans_result = TRANS_NOT_READY; 497 init_completion(&trans_done); 498 rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr); 499 rtsx_pci_writel(pcr, RTSX_HDBCTLR, val); 500 501 spin_unlock_irqrestore(&pcr->lock, flags); 502 503 timeleft = wait_for_completion_interruptible_timeout( 504 &trans_done, msecs_to_jiffies(timeout)); 505 if (timeleft <= 0) { 506 pcr_dbg(pcr, "Timeout (%s %d)\n", __func__, __LINE__); 507 err = -ETIMEDOUT; 508 goto out; 509 } 510 511 spin_lock_irqsave(&pcr->lock, flags); 512 if (pcr->trans_result == TRANS_RESULT_FAIL) { 513 err = -EILSEQ; 514 if (pcr->dma_error_count < RTS_MAX_TIMES_FREQ_REDUCTION) 515 pcr->dma_error_count++; 516 } 517 518 else if (pcr->trans_result == TRANS_NO_DEVICE) 519 err = -ENODEV; 520 spin_unlock_irqrestore(&pcr->lock, flags); 521 522 out: 523 spin_lock_irqsave(&pcr->lock, flags); 524 pcr->done = NULL; 525 spin_unlock_irqrestore(&pcr->lock, flags); 526 527 if ((err < 0) && (err != -ENODEV)) 528 rtsx_pci_stop_cmd(pcr); 529 530 if (pcr->finish_me) 531 complete(pcr->finish_me); 532 533 return err; 534 } 535 EXPORT_SYMBOL_GPL(rtsx_pci_dma_transfer); 536 rtsx_pci_read_ppbuf(struct rtsx_pcr * pcr,u8 * buf,int buf_len)537 int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len) 538 { 539 int err; 540 int i, j; 541 u16 reg; 542 u8 *ptr; 543 544 if (buf_len > 512) 545 buf_len = 512; 546 547 ptr = buf; 548 reg = PPBUF_BASE2; 549 for (i = 0; i < buf_len / 256; i++) { 550 rtsx_pci_init_cmd(pcr); 551 552 for (j = 0; j < 256; j++) 553 rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0); 554 555 err = rtsx_pci_send_cmd(pcr, 250); 556 if (err < 0) 557 return err; 558 559 memcpy(ptr, rtsx_pci_get_cmd_data(pcr), 256); 560 ptr += 256; 561 } 562 563 if (buf_len % 256) { 564 rtsx_pci_init_cmd(pcr); 565 566 for (j = 0; j < buf_len % 256; j++) 567 rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0); 568 569 err = rtsx_pci_send_cmd(pcr, 250); 570 if (err < 0) 571 return err; 572 } 573 574 memcpy(ptr, rtsx_pci_get_cmd_data(pcr), buf_len % 256); 575 576 return 0; 577 } 578 EXPORT_SYMBOL_GPL(rtsx_pci_read_ppbuf); 579 rtsx_pci_write_ppbuf(struct rtsx_pcr * pcr,u8 * buf,int buf_len)580 int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len) 581 { 582 int err; 583 int i, j; 584 u16 reg; 585 u8 *ptr; 586 587 if (buf_len > 512) 588 buf_len = 512; 589 590 ptr = buf; 591 reg = PPBUF_BASE2; 592 for (i = 0; i < buf_len / 256; i++) { 593 rtsx_pci_init_cmd(pcr); 594 595 for (j = 0; j < 256; j++) { 596 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 597 reg++, 0xFF, *ptr); 598 ptr++; 599 } 600 601 err = rtsx_pci_send_cmd(pcr, 250); 602 if (err < 0) 603 return err; 604 } 605 606 if (buf_len % 256) { 607 rtsx_pci_init_cmd(pcr); 608 609 for (j = 0; j < buf_len % 256; j++) { 610 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 611 reg++, 0xFF, *ptr); 612 ptr++; 613 } 614 615 err = rtsx_pci_send_cmd(pcr, 250); 616 if (err < 0) 617 return err; 618 } 619 620 return 0; 621 } 622 EXPORT_SYMBOL_GPL(rtsx_pci_write_ppbuf); 623 rtsx_pci_set_pull_ctl(struct rtsx_pcr * pcr,const u32 * tbl)624 static int rtsx_pci_set_pull_ctl(struct rtsx_pcr *pcr, const u32 *tbl) 625 { 626 rtsx_pci_init_cmd(pcr); 627 628 while (*tbl & 0xFFFF0000) { 629 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 630 (u16)(*tbl >> 16), 0xFF, (u8)(*tbl)); 631 tbl++; 632 } 633 634 return rtsx_pci_send_cmd(pcr, 100); 635 } 636 rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr * pcr,int card)637 int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card) 638 { 639 const u32 *tbl; 640 641 if (card == RTSX_SD_CARD) 642 tbl = pcr->sd_pull_ctl_enable_tbl; 643 else if (card == RTSX_MS_CARD) 644 tbl = pcr->ms_pull_ctl_enable_tbl; 645 else 646 return -EINVAL; 647 648 return rtsx_pci_set_pull_ctl(pcr, tbl); 649 } 650 EXPORT_SYMBOL_GPL(rtsx_pci_card_pull_ctl_enable); 651 rtsx_pci_card_pull_ctl_disable(struct rtsx_pcr * pcr,int card)652 int rtsx_pci_card_pull_ctl_disable(struct rtsx_pcr *pcr, int card) 653 { 654 const u32 *tbl; 655 656 if (card == RTSX_SD_CARD) 657 tbl = pcr->sd_pull_ctl_disable_tbl; 658 else if (card == RTSX_MS_CARD) 659 tbl = pcr->ms_pull_ctl_disable_tbl; 660 else 661 return -EINVAL; 662 663 return rtsx_pci_set_pull_ctl(pcr, tbl); 664 } 665 EXPORT_SYMBOL_GPL(rtsx_pci_card_pull_ctl_disable); 666 rtsx_pci_enable_bus_int(struct rtsx_pcr * pcr)667 static void rtsx_pci_enable_bus_int(struct rtsx_pcr *pcr) 668 { 669 struct rtsx_hw_param *hw_param = &pcr->hw_param; 670 671 pcr->bier = TRANS_OK_INT_EN | TRANS_FAIL_INT_EN | SD_INT_EN 672 | hw_param->interrupt_en; 673 674 if (pcr->num_slots > 1) 675 pcr->bier |= MS_INT_EN; 676 677 /* Enable Bus Interrupt */ 678 rtsx_pci_writel(pcr, RTSX_BIER, pcr->bier); 679 680 pcr_dbg(pcr, "RTSX_BIER: 0x%08x\n", pcr->bier); 681 } 682 double_ssc_depth(u8 depth)683 static inline u8 double_ssc_depth(u8 depth) 684 { 685 return ((depth > 1) ? (depth - 1) : depth); 686 } 687 revise_ssc_depth(u8 ssc_depth,u8 div)688 static u8 revise_ssc_depth(u8 ssc_depth, u8 div) 689 { 690 if (div > CLK_DIV_1) { 691 if (ssc_depth > (div - 1)) 692 ssc_depth -= (div - 1); 693 else 694 ssc_depth = SSC_DEPTH_4M; 695 } 696 697 return ssc_depth; 698 } 699 rtsx_pci_switch_clock(struct rtsx_pcr * pcr,unsigned int card_clock,u8 ssc_depth,bool initial_mode,bool double_clk,bool vpclk)700 int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, 701 u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk) 702 { 703 int err, clk; 704 u8 n, clk_divider, mcu_cnt, div; 705 static const u8 depth[] = { 706 [RTSX_SSC_DEPTH_4M] = SSC_DEPTH_4M, 707 [RTSX_SSC_DEPTH_2M] = SSC_DEPTH_2M, 708 [RTSX_SSC_DEPTH_1M] = SSC_DEPTH_1M, 709 [RTSX_SSC_DEPTH_500K] = SSC_DEPTH_500K, 710 [RTSX_SSC_DEPTH_250K] = SSC_DEPTH_250K, 711 }; 712 713 if (PCI_PID(pcr) == PID_5261) 714 return rts5261_pci_switch_clock(pcr, card_clock, 715 ssc_depth, initial_mode, double_clk, vpclk); 716 if (PCI_PID(pcr) == PID_5228) 717 return rts5228_pci_switch_clock(pcr, card_clock, 718 ssc_depth, initial_mode, double_clk, vpclk); 719 if (PCI_PID(pcr) == PID_5264) 720 return rts5264_pci_switch_clock(pcr, card_clock, 721 ssc_depth, initial_mode, double_clk, vpclk); 722 723 if (initial_mode) { 724 /* We use 250k(around) here, in initial stage */ 725 clk_divider = SD_CLK_DIVIDE_128; 726 card_clock = 30000000; 727 } else { 728 clk_divider = SD_CLK_DIVIDE_0; 729 } 730 err = rtsx_pci_write_register(pcr, SD_CFG1, 731 SD_CLK_DIVIDE_MASK, clk_divider); 732 if (err < 0) 733 return err; 734 735 /* Reduce card clock by 20MHz each time a DMA transfer error occurs */ 736 if (card_clock == UHS_SDR104_MAX_DTR && 737 pcr->dma_error_count && 738 PCI_PID(pcr) == RTS5227_DEVICE_ID) 739 card_clock = UHS_SDR104_MAX_DTR - 740 (pcr->dma_error_count * 20000000); 741 742 card_clock /= 1000000; 743 pcr_dbg(pcr, "Switch card clock to %dMHz\n", card_clock); 744 745 clk = card_clock; 746 if (!initial_mode && double_clk) 747 clk = card_clock * 2; 748 pcr_dbg(pcr, "Internal SSC clock: %dMHz (cur_clock = %d)\n", 749 clk, pcr->cur_clock); 750 751 if (clk == pcr->cur_clock) 752 return 0; 753 754 if (pcr->ops->conv_clk_and_div_n) 755 n = (u8)pcr->ops->conv_clk_and_div_n(clk, CLK_TO_DIV_N); 756 else 757 n = (u8)(clk - 2); 758 if ((clk <= 2) || (n > MAX_DIV_N_PCR)) 759 return -EINVAL; 760 761 mcu_cnt = (u8)(125/clk + 3); 762 if (mcu_cnt > 15) 763 mcu_cnt = 15; 764 765 /* Make sure that the SSC clock div_n is not less than MIN_DIV_N_PCR */ 766 div = CLK_DIV_1; 767 while ((n < MIN_DIV_N_PCR) && (div < CLK_DIV_8)) { 768 if (pcr->ops->conv_clk_and_div_n) { 769 int dbl_clk = pcr->ops->conv_clk_and_div_n(n, 770 DIV_N_TO_CLK) * 2; 771 n = (u8)pcr->ops->conv_clk_and_div_n(dbl_clk, 772 CLK_TO_DIV_N); 773 } else { 774 n = (n + 2) * 2 - 2; 775 } 776 div++; 777 } 778 pcr_dbg(pcr, "n = %d, div = %d\n", n, div); 779 780 ssc_depth = depth[ssc_depth]; 781 if (double_clk) 782 ssc_depth = double_ssc_depth(ssc_depth); 783 784 ssc_depth = revise_ssc_depth(ssc_depth, div); 785 pcr_dbg(pcr, "ssc_depth = %d\n", ssc_depth); 786 787 rtsx_pci_init_cmd(pcr); 788 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, 789 CLK_LOW_FREQ, CLK_LOW_FREQ); 790 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV, 791 0xFF, (div << 4) | mcu_cnt); 792 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0); 793 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 794 SSC_DEPTH_MASK, ssc_depth); 795 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n); 796 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB); 797 if (vpclk) { 798 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL, 799 PHASE_NOT_RESET, 0); 800 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL, 801 PHASE_NOT_RESET, PHASE_NOT_RESET); 802 } 803 804 err = rtsx_pci_send_cmd(pcr, 2000); 805 if (err < 0) 806 return err; 807 808 /* Wait SSC clock stable */ 809 udelay(SSC_CLOCK_STABLE_WAIT); 810 err = rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0); 811 if (err < 0) 812 return err; 813 814 pcr->cur_clock = clk; 815 return 0; 816 } 817 EXPORT_SYMBOL_GPL(rtsx_pci_switch_clock); 818 rtsx_pci_card_power_on(struct rtsx_pcr * pcr,int card)819 int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card) 820 { 821 if (pcr->ops->card_power_on) 822 return pcr->ops->card_power_on(pcr, card); 823 824 return 0; 825 } 826 EXPORT_SYMBOL_GPL(rtsx_pci_card_power_on); 827 rtsx_pci_card_power_off(struct rtsx_pcr * pcr,int card)828 int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card) 829 { 830 if (pcr->ops->card_power_off) 831 return pcr->ops->card_power_off(pcr, card); 832 833 return 0; 834 } 835 EXPORT_SYMBOL_GPL(rtsx_pci_card_power_off); 836 rtsx_pci_card_exclusive_check(struct rtsx_pcr * pcr,int card)837 int rtsx_pci_card_exclusive_check(struct rtsx_pcr *pcr, int card) 838 { 839 static const unsigned int cd_mask[] = { 840 [RTSX_SD_CARD] = SD_EXIST, 841 [RTSX_MS_CARD] = MS_EXIST 842 }; 843 844 if (!(pcr->flags & PCR_MS_PMOS)) { 845 /* When using single PMOS, accessing card is not permitted 846 * if the existing card is not the designated one. 847 */ 848 if (pcr->card_exist & (~cd_mask[card])) 849 return -EIO; 850 } 851 852 return 0; 853 } 854 EXPORT_SYMBOL_GPL(rtsx_pci_card_exclusive_check); 855 rtsx_pci_switch_output_voltage(struct rtsx_pcr * pcr,u8 voltage)856 int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage) 857 { 858 if (pcr->ops->switch_output_voltage) 859 return pcr->ops->switch_output_voltage(pcr, voltage); 860 861 return 0; 862 } 863 EXPORT_SYMBOL_GPL(rtsx_pci_switch_output_voltage); 864 rtsx_pci_card_exist(struct rtsx_pcr * pcr)865 unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr) 866 { 867 unsigned int val; 868 869 val = rtsx_pci_readl(pcr, RTSX_BIPR); 870 if (pcr->ops->cd_deglitch) 871 val = pcr->ops->cd_deglitch(pcr); 872 873 return val; 874 } 875 EXPORT_SYMBOL_GPL(rtsx_pci_card_exist); 876 rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr * pcr)877 void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr) 878 { 879 struct completion finish; 880 881 pcr->finish_me = &finish; 882 init_completion(&finish); 883 884 if (pcr->done) 885 complete(pcr->done); 886 887 if (!pcr->remove_pci) 888 rtsx_pci_stop_cmd(pcr); 889 890 wait_for_completion_interruptible_timeout(&finish, 891 msecs_to_jiffies(2)); 892 pcr->finish_me = NULL; 893 } 894 EXPORT_SYMBOL_GPL(rtsx_pci_complete_unfinished_transfer); 895 rtsx_pci_card_detect(struct work_struct * work)896 static void rtsx_pci_card_detect(struct work_struct *work) 897 { 898 struct delayed_work *dwork; 899 struct rtsx_pcr *pcr; 900 unsigned long flags; 901 unsigned int card_detect = 0, card_inserted, card_removed; 902 u32 irq_status; 903 904 dwork = to_delayed_work(work); 905 pcr = container_of(dwork, struct rtsx_pcr, carddet_work); 906 907 pcr_dbg(pcr, "--> %s\n", __func__); 908 909 mutex_lock(&pcr->pcr_mutex); 910 spin_lock_irqsave(&pcr->lock, flags); 911 912 irq_status = rtsx_pci_readl(pcr, RTSX_BIPR); 913 pcr_dbg(pcr, "irq_status: 0x%08x\n", irq_status); 914 915 irq_status &= CARD_EXIST; 916 card_inserted = pcr->card_inserted & irq_status; 917 card_removed = pcr->card_removed; 918 pcr->card_inserted = 0; 919 pcr->card_removed = 0; 920 921 spin_unlock_irqrestore(&pcr->lock, flags); 922 923 if (card_inserted || card_removed) { 924 pcr_dbg(pcr, "card_inserted: 0x%x, card_removed: 0x%x\n", 925 card_inserted, card_removed); 926 927 if (pcr->ops->cd_deglitch) 928 card_inserted = pcr->ops->cd_deglitch(pcr); 929 930 card_detect = card_inserted | card_removed; 931 932 pcr->card_exist |= card_inserted; 933 pcr->card_exist &= ~card_removed; 934 } 935 936 mutex_unlock(&pcr->pcr_mutex); 937 938 if ((card_detect & SD_EXIST) && pcr->slots[RTSX_SD_CARD].card_event) 939 pcr->slots[RTSX_SD_CARD].card_event( 940 pcr->slots[RTSX_SD_CARD].p_dev); 941 if ((card_detect & MS_EXIST) && pcr->slots[RTSX_MS_CARD].card_event) 942 pcr->slots[RTSX_MS_CARD].card_event( 943 pcr->slots[RTSX_MS_CARD].p_dev); 944 } 945 rtsx_pci_process_ocp(struct rtsx_pcr * pcr)946 static void rtsx_pci_process_ocp(struct rtsx_pcr *pcr) 947 { 948 if (pcr->ops->process_ocp) { 949 pcr->ops->process_ocp(pcr); 950 } else { 951 if (!pcr->option.ocp_en) 952 return; 953 rtsx_pci_get_ocpstat(pcr, &pcr->ocp_stat); 954 if (pcr->ocp_stat & (SD_OC_NOW | SD_OC_EVER)) { 955 rtsx_pci_card_power_off(pcr, RTSX_SD_CARD); 956 rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0); 957 rtsx_pci_clear_ocpstat(pcr); 958 pcr->ocp_stat = 0; 959 } 960 } 961 } 962 rtsx_pci_process_ocp_interrupt(struct rtsx_pcr * pcr)963 static int rtsx_pci_process_ocp_interrupt(struct rtsx_pcr *pcr) 964 { 965 if (pcr->option.ocp_en) 966 rtsx_pci_process_ocp(pcr); 967 968 return 0; 969 } 970 rtsx_pci_isr(int irq,void * dev_id)971 static irqreturn_t rtsx_pci_isr(int irq, void *dev_id) 972 { 973 struct rtsx_pcr *pcr = dev_id; 974 u32 int_reg; 975 976 if (!pcr) 977 return IRQ_NONE; 978 979 spin_lock(&pcr->lock); 980 981 int_reg = rtsx_pci_readl(pcr, RTSX_BIPR); 982 /* Clear interrupt flag */ 983 rtsx_pci_writel(pcr, RTSX_BIPR, int_reg); 984 if ((int_reg & pcr->bier) == 0) { 985 spin_unlock(&pcr->lock); 986 return IRQ_NONE; 987 } 988 if (int_reg == 0xFFFFFFFF) { 989 spin_unlock(&pcr->lock); 990 return IRQ_HANDLED; 991 } 992 993 int_reg &= (pcr->bier | 0x7FFFFF); 994 995 if ((int_reg & SD_OC_INT) || 996 ((int_reg & SD_OVP_INT) && (PCI_PID(pcr) == PID_5264))) 997 rtsx_pci_process_ocp_interrupt(pcr); 998 999 if (int_reg & SD_INT) { 1000 if (int_reg & SD_EXIST) { 1001 pcr->card_inserted |= SD_EXIST; 1002 } else { 1003 pcr->card_removed |= SD_EXIST; 1004 pcr->card_inserted &= ~SD_EXIST; 1005 } 1006 1007 if ((PCI_PID(pcr) == PID_5261) || (PCI_PID(pcr) == PID_5264)) { 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 rtsx_pci_acquire_irq(struct rtsx_pcr * pcr)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 rtsx_base_force_power_down(struct rtsx_pcr * pcr)1065 static void rtsx_base_force_power_down(struct rtsx_pcr *pcr) 1066 { 1067 /* Set relink_time to 0 */ 1068 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, MASK_8_BIT_DEF, 0); 1069 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, MASK_8_BIT_DEF, 0); 1070 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 1071 RELINK_TIME_MASK, 0); 1072 1073 rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 1074 D3_DELINK_MODE_EN, D3_DELINK_MODE_EN); 1075 1076 rtsx_pci_write_register(pcr, FPDCTL, ALL_POWER_DOWN, ALL_POWER_DOWN); 1077 } 1078 rtsx_pci_power_off(struct rtsx_pcr * pcr,u8 pm_state,bool runtime)1079 static void __maybe_unused rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state, bool runtime) 1080 { 1081 if (pcr->ops->turn_off_led) 1082 pcr->ops->turn_off_led(pcr); 1083 1084 rtsx_pci_writel(pcr, RTSX_BIER, 0); 1085 pcr->bier = 0; 1086 1087 rtsx_pci_write_register(pcr, PETXCFG, 0x08, 0x08); 1088 rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, pm_state); 1089 1090 if (pcr->ops->force_power_down) 1091 pcr->ops->force_power_down(pcr, pm_state, runtime); 1092 else 1093 rtsx_base_force_power_down(pcr); 1094 } 1095 rtsx_pci_enable_ocp(struct rtsx_pcr * pcr)1096 void rtsx_pci_enable_ocp(struct rtsx_pcr *pcr) 1097 { 1098 u8 val = SD_OCP_INT_EN | SD_DETECT_EN; 1099 1100 if (pcr->ops->enable_ocp) { 1101 pcr->ops->enable_ocp(pcr); 1102 } else { 1103 rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN, 0); 1104 rtsx_pci_write_register(pcr, REG_OCPCTL, 0xFF, val); 1105 } 1106 1107 } 1108 rtsx_pci_disable_ocp(struct rtsx_pcr * pcr)1109 void rtsx_pci_disable_ocp(struct rtsx_pcr *pcr) 1110 { 1111 u8 mask = SD_OCP_INT_EN | SD_DETECT_EN; 1112 1113 if (pcr->ops->disable_ocp) { 1114 pcr->ops->disable_ocp(pcr); 1115 } else { 1116 rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0); 1117 rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN, 1118 OC_POWER_DOWN); 1119 } 1120 } 1121 rtsx_pci_init_ocp(struct rtsx_pcr * pcr)1122 void rtsx_pci_init_ocp(struct rtsx_pcr *pcr) 1123 { 1124 if (pcr->ops->init_ocp) { 1125 pcr->ops->init_ocp(pcr); 1126 } else { 1127 struct rtsx_cr_option *option = &(pcr->option); 1128 1129 if (option->ocp_en) { 1130 u8 val = option->sd_800mA_ocp_thd; 1131 1132 rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN, 0); 1133 rtsx_pci_write_register(pcr, REG_OCPPARA1, 1134 SD_OCP_TIME_MASK, SD_OCP_TIME_800); 1135 rtsx_pci_write_register(pcr, REG_OCPPARA2, 1136 SD_OCP_THD_MASK, val); 1137 rtsx_pci_write_register(pcr, REG_OCPGLITCH, 1138 SD_OCP_GLITCH_MASK, pcr->hw_param.ocp_glitch); 1139 rtsx_pci_enable_ocp(pcr); 1140 } 1141 } 1142 } 1143 rtsx_pci_get_ocpstat(struct rtsx_pcr * pcr,u8 * val)1144 int rtsx_pci_get_ocpstat(struct rtsx_pcr *pcr, u8 *val) 1145 { 1146 if (pcr->ops->get_ocpstat) 1147 return pcr->ops->get_ocpstat(pcr, val); 1148 else 1149 return rtsx_pci_read_register(pcr, REG_OCPSTAT, val); 1150 } 1151 rtsx_pci_clear_ocpstat(struct rtsx_pcr * pcr)1152 void rtsx_pci_clear_ocpstat(struct rtsx_pcr *pcr) 1153 { 1154 if (pcr->ops->clear_ocpstat) { 1155 pcr->ops->clear_ocpstat(pcr); 1156 } else { 1157 u8 mask = SD_OCP_INT_CLR | SD_OC_CLR; 1158 u8 val = SD_OCP_INT_CLR | SD_OC_CLR; 1159 1160 rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val); 1161 udelay(100); 1162 rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0); 1163 } 1164 } 1165 rtsx_pci_enable_oobs_polling(struct rtsx_pcr * pcr)1166 void rtsx_pci_enable_oobs_polling(struct rtsx_pcr *pcr) 1167 { 1168 u16 val; 1169 1170 if ((PCI_PID(pcr) != PID_525A) && 1171 (PCI_PID(pcr) != PID_5260) && 1172 (PCI_PID(pcr) != PID_5264)) { 1173 rtsx_pci_read_phy_register(pcr, 0x01, &val); 1174 val |= 1<<9; 1175 rtsx_pci_write_phy_register(pcr, 0x01, val); 1176 } 1177 rtsx_pci_write_register(pcr, REG_CFG_OOBS_OFF_TIMER, 0xFF, 0x32); 1178 rtsx_pci_write_register(pcr, REG_CFG_OOBS_ON_TIMER, 0xFF, 0x05); 1179 rtsx_pci_write_register(pcr, REG_CFG_VCM_ON_TIMER, 0xFF, 0x83); 1180 rtsx_pci_write_register(pcr, REG_CFG_OOBS_POLLING, 0xFF, 0xDE); 1181 1182 } 1183 rtsx_pci_disable_oobs_polling(struct rtsx_pcr * pcr)1184 void rtsx_pci_disable_oobs_polling(struct rtsx_pcr *pcr) 1185 { 1186 u16 val; 1187 1188 if ((PCI_PID(pcr) != PID_525A) && 1189 (PCI_PID(pcr) != PID_5260) && 1190 (PCI_PID(pcr) != PID_5264)) { 1191 rtsx_pci_read_phy_register(pcr, 0x01, &val); 1192 val &= ~(1<<9); 1193 rtsx_pci_write_phy_register(pcr, 0x01, val); 1194 } 1195 rtsx_pci_write_register(pcr, REG_CFG_VCM_ON_TIMER, 0xFF, 0x03); 1196 rtsx_pci_write_register(pcr, REG_CFG_OOBS_POLLING, 0xFF, 0x00); 1197 1198 } 1199 rtsx_sd_power_off_card3v3(struct rtsx_pcr * pcr)1200 int rtsx_sd_power_off_card3v3(struct rtsx_pcr *pcr) 1201 { 1202 rtsx_pci_write_register(pcr, CARD_CLK_EN, SD_CLK_EN | 1203 MS_CLK_EN | SD40_CLK_EN, 0); 1204 rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0); 1205 rtsx_pci_card_power_off(pcr, RTSX_SD_CARD); 1206 1207 msleep(50); 1208 1209 rtsx_pci_card_pull_ctl_disable(pcr, RTSX_SD_CARD); 1210 1211 return 0; 1212 } 1213 rtsx_ms_power_off_card3v3(struct rtsx_pcr * pcr)1214 int rtsx_ms_power_off_card3v3(struct rtsx_pcr *pcr) 1215 { 1216 rtsx_pci_write_register(pcr, CARD_CLK_EN, SD_CLK_EN | 1217 MS_CLK_EN | SD40_CLK_EN, 0); 1218 1219 rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD); 1220 1221 rtsx_pci_write_register(pcr, CARD_OE, MS_OUTPUT_EN, 0); 1222 rtsx_pci_card_power_off(pcr, RTSX_MS_CARD); 1223 1224 return 0; 1225 } 1226 rtsx_pci_init_hw(struct rtsx_pcr * pcr)1227 static int rtsx_pci_init_hw(struct rtsx_pcr *pcr) 1228 { 1229 struct pci_dev *pdev = pcr->pci; 1230 int err; 1231 1232 if (PCI_PID(pcr) == PID_5228) 1233 rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG1, RTS5228_LDO1_SR_TIME_MASK, 1234 RTS5228_LDO1_SR_0_5); 1235 1236 rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr); 1237 1238 rtsx_pci_enable_bus_int(pcr); 1239 1240 /* Power on SSC */ 1241 if ((PCI_PID(pcr) == PID_5261) || (PCI_PID(pcr) == PID_5264)) { 1242 /* Gating real mcu clock */ 1243 err = rtsx_pci_write_register(pcr, RTS5261_FW_CFG1, 1244 RTS5261_MCU_CLOCK_GATING, 0); 1245 err = rtsx_pci_write_register(pcr, RTS5261_REG_FPDCTL, 1246 SSC_POWER_DOWN, 0); 1247 } else { 1248 err = rtsx_pci_write_register(pcr, FPDCTL, SSC_POWER_DOWN, 0); 1249 } 1250 if (err < 0) 1251 return err; 1252 1253 /* Wait SSC power stable */ 1254 udelay(200); 1255 1256 rtsx_disable_aspm(pcr); 1257 if (pcr->ops->optimize_phy) { 1258 err = pcr->ops->optimize_phy(pcr); 1259 if (err < 0) 1260 return err; 1261 } 1262 1263 rtsx_pci_init_cmd(pcr); 1264 1265 /* Set mcu_cnt to 7 to ensure data can be sampled properly */ 1266 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV, 0x07, 0x07); 1267 1268 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, HOST_SLEEP_STATE, 0x03, 0x00); 1269 /* Disable card clock */ 1270 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, 0x1E, 0); 1271 /* Reset delink mode */ 1272 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CHANGE_LINK_STATE, 0x0A, 0); 1273 /* Card driving select */ 1274 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DRIVE_SEL, 1275 0xFF, pcr->card_drive_sel); 1276 /* Enable SSC Clock */ 1277 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, 1278 0xFF, SSC_8X_EN | SSC_SEL_4M); 1279 if (PCI_PID(pcr) == PID_5261) 1280 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF, 1281 RTS5261_SSC_DEPTH_2M); 1282 else if (PCI_PID(pcr) == PID_5228) 1283 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF, 1284 RTS5228_SSC_DEPTH_2M); 1285 else if (is_version(pcr, 0x5264, IC_VER_A)) 1286 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0); 1287 else if (PCI_PID(pcr) == PID_5264) 1288 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF, 1289 RTS5264_SSC_DEPTH_2M); 1290 else 1291 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF, 0x12); 1292 1293 /* Disable cd_pwr_save */ 1294 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CHANGE_LINK_STATE, 0x16, 0x10); 1295 /* Clear Link Ready Interrupt */ 1296 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0, 1297 LINK_RDY_INT, LINK_RDY_INT); 1298 /* Enlarge the estimation window of PERST# glitch 1299 * to reduce the chance of invalid card interrupt 1300 */ 1301 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PERST_GLITCH_WIDTH, 0xFF, 0x80); 1302 /* Update RC oscillator to 400k 1303 * bit[0] F_HIGH: for RC oscillator, Rst_value is 1'b1 1304 * 1: 2M 0: 400k 1305 */ 1306 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RCCTL, 0x01, 0x00); 1307 /* Set interrupt write clear 1308 * bit 1: U_elbi_if_rd_clr_en 1309 * 1: Enable ELBI interrupt[31:22] & [7:0] flag read clear 1310 * 0: ELBI interrupt flag[31:22] & [7:0] only can be write clear 1311 */ 1312 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, NFTS_TX_CTRL, 0x02, 0); 1313 1314 err = rtsx_pci_send_cmd(pcr, 100); 1315 if (err < 0) 1316 return err; 1317 1318 switch (PCI_PID(pcr)) { 1319 case PID_5250: 1320 case PID_524A: 1321 case PID_525A: 1322 case PID_5260: 1323 case PID_5261: 1324 case PID_5228: 1325 case PID_5264: 1326 rtsx_pci_write_register(pcr, PM_CLK_FORCE_CTL, 1, 1); 1327 break; 1328 default: 1329 break; 1330 } 1331 1332 /*init ocp*/ 1333 rtsx_pci_init_ocp(pcr); 1334 1335 /* Enable clk_request_n to enable clock power management */ 1336 pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL, 1337 0, PCI_EXP_LNKCTL_CLKREQ_EN); 1338 /* Enter L1 when host tx idle */ 1339 pci_write_config_byte(pdev, 0x70F, 0x5B); 1340 1341 if (pcr->ops->extra_init_hw) { 1342 err = pcr->ops->extra_init_hw(pcr); 1343 if (err < 0) 1344 return err; 1345 } 1346 1347 if (pcr->aspm_mode == ASPM_MODE_REG) 1348 rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0x30, 0x30); 1349 1350 /* No CD interrupt if probing driver with card inserted. 1351 * So we need to initialize pcr->card_exist here. 1352 */ 1353 if (pcr->ops->cd_deglitch) 1354 pcr->card_exist = pcr->ops->cd_deglitch(pcr); 1355 else 1356 pcr->card_exist = rtsx_pci_readl(pcr, RTSX_BIPR) & CARD_EXIST; 1357 1358 return 0; 1359 } 1360 rtsx_pci_init_chip(struct rtsx_pcr * pcr)1361 static int rtsx_pci_init_chip(struct rtsx_pcr *pcr) 1362 { 1363 struct rtsx_cr_option *option = &(pcr->option); 1364 int err, l1ss; 1365 u32 lval; 1366 u16 cfg_val; 1367 u8 val; 1368 1369 spin_lock_init(&pcr->lock); 1370 mutex_init(&pcr->pcr_mutex); 1371 1372 switch (PCI_PID(pcr)) { 1373 default: 1374 case 0x5209: 1375 rts5209_init_params(pcr); 1376 break; 1377 1378 case 0x5229: 1379 rts5229_init_params(pcr); 1380 break; 1381 1382 case 0x5289: 1383 rtl8411_init_params(pcr); 1384 break; 1385 1386 case 0x5227: 1387 rts5227_init_params(pcr); 1388 break; 1389 1390 case 0x522A: 1391 rts522a_init_params(pcr); 1392 break; 1393 1394 case 0x5249: 1395 rts5249_init_params(pcr); 1396 break; 1397 1398 case 0x524A: 1399 rts524a_init_params(pcr); 1400 break; 1401 1402 case 0x525A: 1403 rts525a_init_params(pcr); 1404 break; 1405 1406 case 0x5287: 1407 rtl8411b_init_params(pcr); 1408 break; 1409 1410 case 0x5286: 1411 rtl8402_init_params(pcr); 1412 break; 1413 1414 case 0x5260: 1415 rts5260_init_params(pcr); 1416 break; 1417 1418 case 0x5261: 1419 rts5261_init_params(pcr); 1420 break; 1421 1422 case 0x5228: 1423 rts5228_init_params(pcr); 1424 break; 1425 1426 case 0x5264: 1427 rts5264_init_params(pcr); 1428 break; 1429 } 1430 1431 pcr_dbg(pcr, "PID: 0x%04x, IC version: 0x%02x\n", 1432 PCI_PID(pcr), pcr->ic_version); 1433 1434 pcr->slots = kcalloc(pcr->num_slots, sizeof(struct rtsx_slot), 1435 GFP_KERNEL); 1436 if (!pcr->slots) 1437 return -ENOMEM; 1438 1439 if (pcr->aspm_mode == ASPM_MODE_CFG) { 1440 pcie_capability_read_word(pcr->pci, PCI_EXP_LNKCTL, &cfg_val); 1441 if (cfg_val & PCI_EXP_LNKCTL_ASPM_L1) 1442 pcr->aspm_enabled = true; 1443 else 1444 pcr->aspm_enabled = false; 1445 1446 } else if (pcr->aspm_mode == ASPM_MODE_REG) { 1447 rtsx_pci_read_register(pcr, ASPM_FORCE_CTL, &val); 1448 if (val & FORCE_ASPM_CTL0 && val & FORCE_ASPM_CTL1) 1449 pcr->aspm_enabled = false; 1450 else 1451 pcr->aspm_enabled = true; 1452 } 1453 1454 l1ss = pci_find_ext_capability(pcr->pci, PCI_EXT_CAP_ID_L1SS); 1455 if (l1ss) { 1456 pci_read_config_dword(pcr->pci, l1ss + PCI_L1SS_CTL1, &lval); 1457 1458 if (lval & PCI_L1SS_CTL1_ASPM_L1_1) 1459 rtsx_set_dev_flag(pcr, ASPM_L1_1_EN); 1460 else 1461 rtsx_clear_dev_flag(pcr, ASPM_L1_1_EN); 1462 1463 if (lval & PCI_L1SS_CTL1_ASPM_L1_2) 1464 rtsx_set_dev_flag(pcr, ASPM_L1_2_EN); 1465 else 1466 rtsx_clear_dev_flag(pcr, ASPM_L1_2_EN); 1467 1468 if (lval & PCI_L1SS_CTL1_PCIPM_L1_1) 1469 rtsx_set_dev_flag(pcr, PM_L1_1_EN); 1470 else 1471 rtsx_clear_dev_flag(pcr, PM_L1_1_EN); 1472 1473 if (lval & PCI_L1SS_CTL1_PCIPM_L1_2) 1474 rtsx_set_dev_flag(pcr, PM_L1_2_EN); 1475 else 1476 rtsx_clear_dev_flag(pcr, PM_L1_2_EN); 1477 1478 pcie_capability_read_word(pcr->pci, PCI_EXP_DEVCTL2, &cfg_val); 1479 if (cfg_val & PCI_EXP_DEVCTL2_LTR_EN) { 1480 option->ltr_enabled = true; 1481 option->ltr_active = true; 1482 } else { 1483 option->ltr_enabled = false; 1484 } 1485 1486 if (rtsx_check_dev_flag(pcr, ASPM_L1_1_EN | ASPM_L1_2_EN 1487 | PM_L1_1_EN | PM_L1_2_EN)) 1488 option->force_clkreq_0 = false; 1489 else 1490 option->force_clkreq_0 = true; 1491 } else { 1492 option->ltr_enabled = false; 1493 option->force_clkreq_0 = true; 1494 } 1495 1496 if (pcr->ops->fetch_vendor_settings) 1497 pcr->ops->fetch_vendor_settings(pcr); 1498 1499 pcr_dbg(pcr, "pcr->aspm_en = 0x%x\n", pcr->aspm_en); 1500 pcr_dbg(pcr, "pcr->sd30_drive_sel_1v8 = 0x%x\n", 1501 pcr->sd30_drive_sel_1v8); 1502 pcr_dbg(pcr, "pcr->sd30_drive_sel_3v3 = 0x%x\n", 1503 pcr->sd30_drive_sel_3v3); 1504 pcr_dbg(pcr, "pcr->card_drive_sel = 0x%x\n", 1505 pcr->card_drive_sel); 1506 pcr_dbg(pcr, "pcr->flags = 0x%x\n", pcr->flags); 1507 1508 pcr->state = PDEV_STAT_IDLE; 1509 err = rtsx_pci_init_hw(pcr); 1510 if (err < 0) { 1511 kfree(pcr->slots); 1512 return err; 1513 } 1514 1515 return 0; 1516 } 1517 rtsx_pci_probe(struct pci_dev * pcidev,const struct pci_device_id * id)1518 static int rtsx_pci_probe(struct pci_dev *pcidev, 1519 const struct pci_device_id *id) 1520 { 1521 struct rtsx_pcr *pcr; 1522 struct pcr_handle *handle; 1523 u32 base, len; 1524 int ret, i, bar = 0; 1525 1526 dev_dbg(&(pcidev->dev), 1527 ": Realtek PCI-E Card Reader found at %s [%04x:%04x] (rev %x)\n", 1528 pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device, 1529 (int)pcidev->revision); 1530 1531 ret = dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32)); 1532 if (ret < 0) 1533 return ret; 1534 1535 ret = pci_enable_device(pcidev); 1536 if (ret) 1537 return ret; 1538 1539 ret = pci_request_regions(pcidev, DRV_NAME_RTSX_PCI); 1540 if (ret) 1541 goto disable; 1542 1543 pcr = kzalloc(sizeof(*pcr), GFP_KERNEL); 1544 if (!pcr) { 1545 ret = -ENOMEM; 1546 goto release_pci; 1547 } 1548 1549 handle = kzalloc(sizeof(*handle), GFP_KERNEL); 1550 if (!handle) { 1551 ret = -ENOMEM; 1552 goto free_pcr; 1553 } 1554 handle->pcr = pcr; 1555 1556 idr_preload(GFP_KERNEL); 1557 spin_lock(&rtsx_pci_lock); 1558 ret = idr_alloc(&rtsx_pci_idr, pcr, 0, 0, GFP_NOWAIT); 1559 if (ret >= 0) 1560 pcr->id = ret; 1561 spin_unlock(&rtsx_pci_lock); 1562 idr_preload_end(); 1563 if (ret < 0) 1564 goto free_handle; 1565 1566 pcr->pci = pcidev; 1567 dev_set_drvdata(&pcidev->dev, handle); 1568 1569 if ((CHK_PCI_PID(pcr, 0x525A)) || (CHK_PCI_PID(pcr, 0x5264))) 1570 bar = 1; 1571 len = pci_resource_len(pcidev, bar); 1572 base = pci_resource_start(pcidev, bar); 1573 pcr->remap_addr = ioremap(base, len); 1574 if (!pcr->remap_addr) { 1575 ret = -ENOMEM; 1576 goto free_idr; 1577 } 1578 1579 pcr->rtsx_resv_buf = dma_alloc_coherent(&(pcidev->dev), 1580 RTSX_RESV_BUF_LEN, &(pcr->rtsx_resv_buf_addr), 1581 GFP_KERNEL); 1582 if (pcr->rtsx_resv_buf == NULL) { 1583 ret = -ENXIO; 1584 goto unmap; 1585 } 1586 pcr->host_cmds_ptr = pcr->rtsx_resv_buf; 1587 pcr->host_cmds_addr = pcr->rtsx_resv_buf_addr; 1588 pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN; 1589 pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN; 1590 pcr->card_inserted = 0; 1591 pcr->card_removed = 0; 1592 INIT_DELAYED_WORK(&pcr->carddet_work, rtsx_pci_card_detect); 1593 1594 pcr->msi_en = msi_en; 1595 if (pcr->msi_en) { 1596 ret = pci_enable_msi(pcidev); 1597 if (ret) 1598 pcr->msi_en = false; 1599 } 1600 1601 ret = rtsx_pci_acquire_irq(pcr); 1602 if (ret < 0) 1603 goto disable_msi; 1604 1605 pci_set_master(pcidev); 1606 synchronize_irq(pcr->irq); 1607 1608 ret = rtsx_pci_init_chip(pcr); 1609 if (ret < 0) 1610 goto disable_irq; 1611 1612 for (i = 0; i < ARRAY_SIZE(rtsx_pcr_cells); i++) { 1613 rtsx_pcr_cells[i].platform_data = handle; 1614 rtsx_pcr_cells[i].pdata_size = sizeof(*handle); 1615 } 1616 1617 1618 ret = mfd_add_devices(&pcidev->dev, pcr->id, rtsx_pcr_cells, 1619 ARRAY_SIZE(rtsx_pcr_cells), NULL, 0, NULL); 1620 if (ret < 0) 1621 goto free_slots; 1622 1623 pm_runtime_allow(&pcidev->dev); 1624 pm_runtime_put(&pcidev->dev); 1625 1626 return 0; 1627 1628 free_slots: 1629 kfree(pcr->slots); 1630 disable_irq: 1631 free_irq(pcr->irq, (void *)pcr); 1632 disable_msi: 1633 if (pcr->msi_en) 1634 pci_disable_msi(pcr->pci); 1635 dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN, 1636 pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr); 1637 unmap: 1638 iounmap(pcr->remap_addr); 1639 free_idr: 1640 spin_lock(&rtsx_pci_lock); 1641 idr_remove(&rtsx_pci_idr, pcr->id); 1642 spin_unlock(&rtsx_pci_lock); 1643 free_handle: 1644 kfree(handle); 1645 free_pcr: 1646 kfree(pcr); 1647 release_pci: 1648 pci_release_regions(pcidev); 1649 disable: 1650 pci_disable_device(pcidev); 1651 1652 return ret; 1653 } 1654 rtsx_pci_remove(struct pci_dev * pcidev)1655 static void rtsx_pci_remove(struct pci_dev *pcidev) 1656 { 1657 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1658 struct rtsx_pcr *pcr = handle->pcr; 1659 1660 pcr->remove_pci = true; 1661 1662 pm_runtime_get_sync(&pcidev->dev); 1663 pm_runtime_forbid(&pcidev->dev); 1664 1665 /* Disable interrupts at the pcr level */ 1666 spin_lock_irq(&pcr->lock); 1667 rtsx_pci_writel(pcr, RTSX_BIER, 0); 1668 pcr->bier = 0; 1669 spin_unlock_irq(&pcr->lock); 1670 1671 cancel_delayed_work_sync(&pcr->carddet_work); 1672 1673 mfd_remove_devices(&pcidev->dev); 1674 1675 dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN, 1676 pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr); 1677 free_irq(pcr->irq, (void *)pcr); 1678 if (pcr->msi_en) 1679 pci_disable_msi(pcr->pci); 1680 iounmap(pcr->remap_addr); 1681 1682 pci_release_regions(pcidev); 1683 pci_disable_device(pcidev); 1684 1685 spin_lock(&rtsx_pci_lock); 1686 idr_remove(&rtsx_pci_idr, pcr->id); 1687 spin_unlock(&rtsx_pci_lock); 1688 1689 kfree(pcr->slots); 1690 kfree(pcr); 1691 kfree(handle); 1692 1693 dev_dbg(&(pcidev->dev), 1694 ": Realtek PCI-E Card Reader at %s [%04x:%04x] has been removed\n", 1695 pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device); 1696 } 1697 rtsx_pci_suspend(struct device * dev_d)1698 static int __maybe_unused rtsx_pci_suspend(struct device *dev_d) 1699 { 1700 struct pci_dev *pcidev = to_pci_dev(dev_d); 1701 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1702 struct rtsx_pcr *pcr = handle->pcr; 1703 1704 dev_dbg(&(pcidev->dev), "--> %s\n", __func__); 1705 1706 cancel_delayed_work_sync(&pcr->carddet_work); 1707 1708 mutex_lock(&pcr->pcr_mutex); 1709 1710 rtsx_pci_power_off(pcr, HOST_ENTER_S3, false); 1711 1712 mutex_unlock(&pcr->pcr_mutex); 1713 return 0; 1714 } 1715 rtsx_pci_resume(struct device * dev_d)1716 static int __maybe_unused rtsx_pci_resume(struct device *dev_d) 1717 { 1718 struct pci_dev *pcidev = to_pci_dev(dev_d); 1719 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1720 struct rtsx_pcr *pcr = handle->pcr; 1721 int ret = 0; 1722 1723 dev_dbg(&(pcidev->dev), "--> %s\n", __func__); 1724 1725 mutex_lock(&pcr->pcr_mutex); 1726 1727 ret = rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x00); 1728 if (ret) 1729 goto out; 1730 1731 ret = rtsx_pci_init_hw(pcr); 1732 if (ret) 1733 goto out; 1734 1735 out: 1736 mutex_unlock(&pcr->pcr_mutex); 1737 return ret; 1738 } 1739 1740 #ifdef CONFIG_PM 1741 rtsx_enable_aspm(struct rtsx_pcr * pcr)1742 static void rtsx_enable_aspm(struct rtsx_pcr *pcr) 1743 { 1744 if (pcr->ops->set_aspm) 1745 pcr->ops->set_aspm(pcr, true); 1746 else 1747 rtsx_comm_set_aspm(pcr, true); 1748 } 1749 rtsx_comm_pm_power_saving(struct rtsx_pcr * pcr)1750 static void rtsx_comm_pm_power_saving(struct rtsx_pcr *pcr) 1751 { 1752 struct rtsx_cr_option *option = &pcr->option; 1753 1754 if (option->ltr_enabled) { 1755 u32 latency = option->ltr_l1off_latency; 1756 1757 if (rtsx_check_dev_flag(pcr, L1_SNOOZE_TEST_EN)) 1758 mdelay(option->l1_snooze_delay); 1759 1760 rtsx_set_ltr_latency(pcr, latency); 1761 } 1762 1763 if (rtsx_check_dev_flag(pcr, LTR_L1SS_PWR_GATE_EN)) 1764 rtsx_set_l1off_sub_cfg_d0(pcr, 0); 1765 1766 rtsx_enable_aspm(pcr); 1767 } 1768 rtsx_pm_power_saving(struct rtsx_pcr * pcr)1769 static void rtsx_pm_power_saving(struct rtsx_pcr *pcr) 1770 { 1771 rtsx_comm_pm_power_saving(pcr); 1772 } 1773 rtsx_pci_shutdown(struct pci_dev * pcidev)1774 static void rtsx_pci_shutdown(struct pci_dev *pcidev) 1775 { 1776 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1777 struct rtsx_pcr *pcr = handle->pcr; 1778 1779 dev_dbg(&(pcidev->dev), "--> %s\n", __func__); 1780 1781 rtsx_pci_power_off(pcr, HOST_ENTER_S1, false); 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 rtsx_pci_runtime_idle(struct device * device)1789 static int rtsx_pci_runtime_idle(struct device *device) 1790 { 1791 struct pci_dev *pcidev = to_pci_dev(device); 1792 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1793 struct rtsx_pcr *pcr = handle->pcr; 1794 1795 dev_dbg(device, "--> %s\n", __func__); 1796 1797 mutex_lock(&pcr->pcr_mutex); 1798 1799 pcr->state = PDEV_STAT_IDLE; 1800 1801 if (pcr->ops->disable_auto_blink) 1802 pcr->ops->disable_auto_blink(pcr); 1803 if (pcr->ops->turn_off_led) 1804 pcr->ops->turn_off_led(pcr); 1805 1806 rtsx_pm_power_saving(pcr); 1807 1808 mutex_unlock(&pcr->pcr_mutex); 1809 1810 if (pcr->rtd3_en) 1811 pm_schedule_suspend(device, 10000); 1812 1813 return -EBUSY; 1814 } 1815 rtsx_pci_runtime_suspend(struct device * device)1816 static int rtsx_pci_runtime_suspend(struct device *device) 1817 { 1818 struct pci_dev *pcidev = to_pci_dev(device); 1819 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1820 struct rtsx_pcr *pcr = handle->pcr; 1821 1822 dev_dbg(device, "--> %s\n", __func__); 1823 1824 cancel_delayed_work_sync(&pcr->carddet_work); 1825 1826 mutex_lock(&pcr->pcr_mutex); 1827 rtsx_pci_power_off(pcr, HOST_ENTER_S3, true); 1828 1829 mutex_unlock(&pcr->pcr_mutex); 1830 1831 return 0; 1832 } 1833 rtsx_pci_runtime_resume(struct device * device)1834 static int rtsx_pci_runtime_resume(struct device *device) 1835 { 1836 struct pci_dev *pcidev = to_pci_dev(device); 1837 struct pcr_handle *handle = pci_get_drvdata(pcidev); 1838 struct rtsx_pcr *pcr = handle->pcr; 1839 1840 dev_dbg(device, "--> %s\n", __func__); 1841 1842 mutex_lock(&pcr->pcr_mutex); 1843 1844 rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x00); 1845 1846 rtsx_pci_init_hw(pcr); 1847 1848 if (pcr->slots[RTSX_SD_CARD].p_dev != NULL) { 1849 pcr->slots[RTSX_SD_CARD].card_event( 1850 pcr->slots[RTSX_SD_CARD].p_dev); 1851 } 1852 1853 mutex_unlock(&pcr->pcr_mutex); 1854 return 0; 1855 } 1856 1857 #else /* CONFIG_PM */ 1858 1859 #define rtsx_pci_shutdown NULL 1860 #define rtsx_pci_runtime_suspend NULL 1861 #define rtsx_pic_runtime_resume NULL 1862 1863 #endif /* CONFIG_PM */ 1864 1865 static const struct dev_pm_ops rtsx_pci_pm_ops = { 1866 SET_SYSTEM_SLEEP_PM_OPS(rtsx_pci_suspend, rtsx_pci_resume) 1867 SET_RUNTIME_PM_OPS(rtsx_pci_runtime_suspend, rtsx_pci_runtime_resume, rtsx_pci_runtime_idle) 1868 }; 1869 1870 static struct pci_driver rtsx_pci_driver = { 1871 .name = DRV_NAME_RTSX_PCI, 1872 .id_table = rtsx_pci_ids, 1873 .probe = rtsx_pci_probe, 1874 .remove = rtsx_pci_remove, 1875 .driver.pm = &rtsx_pci_pm_ops, 1876 .shutdown = rtsx_pci_shutdown, 1877 }; 1878 module_pci_driver(rtsx_pci_driver); 1879 1880 MODULE_LICENSE("GPL"); 1881 MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>"); 1882 MODULE_DESCRIPTION("Realtek PCI-E Card Reader Driver"); 1883