drivers/misc/cardreader/rts5260.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* Driver for Realtek PCI-Express card reader
   3  *
   4  * Copyright(c) 2016-2017 Realtek Semiconductor Corp. All rights reserved.
   5  *
   6  * Author:
   7  *   Steven FENG <steven_feng@realsil.com.cn>
   8  *   Rui FENG <rui_feng@realsil.com.cn>
   9  *   Wei WANG <wei_wang@realsil.com.cn>
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/delay.h>
  14 #include <linux/rtsx_pci.h>
  15
  16 #include "rts5260.h"
  17 #include "rtsx_pcr.h"
  18
  19 static u8 rts5260_get_ic_version(struct rtsx_pcr *pcr)
  20 {
  21         u8 val;
  22
  23         rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val);
  24         return val & IC_VERSION_MASK;
  25 }
  26
  27 static void rts5260_fill_driving(struct rtsx_pcr *pcr, u8 voltage)
  28 {
  29         u8 driving_3v3[4][3] = {
  30                 {0x11, 0x11, 0x11},
  31                 {0x22, 0x22, 0x22},
  32                 {0x55, 0x55, 0x55},
  33                 {0x33, 0x33, 0x33},
  34         };
  35         u8 driving_1v8[4][3] = {
  36                 {0x35, 0x33, 0x33},
  37                 {0x8A, 0x88, 0x88},
  38                 {0xBD, 0xBB, 0xBB},
  39                 {0x9B, 0x99, 0x99},
  40         };
  41         u8 (*driving)[3], drive_sel;
  42
  43         if (voltage == OUTPUT_3V3) {
  44                 driving = driving_3v3;
  45                 drive_sel = pcr->sd30_drive_sel_3v3;
  46         } else {
  47                 driving = driving_1v8;
  48                 drive_sel = pcr->sd30_drive_sel_1v8;
  49         }
  50
  51         rtsx_pci_write_register(pcr, SD30_CLK_DRIVE_SEL,
  52                          0xFF, driving[drive_sel][0]);
  53
  54         rtsx_pci_write_register(pcr, SD30_CMD_DRIVE_SEL,
  55                          0xFF, driving[drive_sel][1]);
  56
  57         rtsx_pci_write_register(pcr, SD30_DAT_DRIVE_SEL,
  58                          0xFF, driving[drive_sel][2]);
  59 }
  60
  61 static void rtsx_base_fetch_vendor_settings(struct rtsx_pcr *pcr)
  62 {
  63         struct pci_dev *pdev = pcr->pci;
  64         u32 reg;
  65
  66         pci_read_config_dword(pdev, PCR_SETTING_REG1, &reg);
  67         pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
  68
  69         if (!rtsx_vendor_setting_valid(reg)) {
  70                 pcr_dbg(pcr, "skip fetch vendor setting\n");
  71                 return;
  72         }
  73
  74         pcr->aspm_en = rtsx_reg_to_aspm(reg);
  75         pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg);
  76         pcr->card_drive_sel &= 0x3F;
  77         pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg);
  78
  79         pci_read_config_dword(pdev, PCR_SETTING_REG2, &reg);
  80         pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
  81         if (rtsx_check_mmc_support(reg))
  82                 pcr->extra_caps |= EXTRA_CAPS_NO_MMC;
  83         pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg);
  84         if (rtsx_reg_check_reverse_socket(reg))
  85                 pcr->flags |= PCR_REVERSE_SOCKET;
  86 }
  87
  88 static int rtsx_base_enable_auto_blink(struct rtsx_pcr *pcr)
  89 {
  90         return rtsx_pci_write_register(pcr, OLT_LED_CTL,
  91                 LED_SHINE_MASK, LED_SHINE_EN);
  92 }
  93
  94 static int rtsx_base_disable_auto_blink(struct rtsx_pcr *pcr)
  95 {
  96         return rtsx_pci_write_register(pcr, OLT_LED_CTL,
  97                 LED_SHINE_MASK, LED_SHINE_DISABLE);
  98 }
  99
 100 static int rts5260_turn_on_led(struct rtsx_pcr *pcr)
 101 {
 102         return rtsx_pci_write_register(pcr, RTS5260_REG_GPIO_CTL0,
 103                 RTS5260_REG_GPIO_MASK, RTS5260_REG_GPIO_ON);
 104 }
 105
 106 static int rts5260_turn_off_led(struct rtsx_pcr *pcr)
 107 {
 108         return rtsx_pci_write_register(pcr, RTS5260_REG_GPIO_CTL0,
 109                 RTS5260_REG_GPIO_MASK, RTS5260_REG_GPIO_OFF);
 110 }
 111
 112 /* SD Pull Control Enable:
 113  *     SD_DAT[3:0] ==> pull up
 114  *     SD_CD       ==> pull up
 115  *     SD_WP       ==> pull up
 116  *     SD_CMD      ==> pull up
 117  *     SD_CLK      ==> pull down
 118  */
 119 static const u32 rts5260_sd_pull_ctl_enable_tbl[] = {
 120         RTSX_REG_PAIR(CARD_PULL_CTL1, 0x66),
 121         RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
 122         RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
 123         RTSX_REG_PAIR(CARD_PULL_CTL4, 0xAA),
 124         0,
 125 };
 126
 127 /* SD Pull Control Disable:
 128  *     SD_DAT[3:0] ==> pull down
 129  *     SD_CD       ==> pull up
 130  *     SD_WP       ==> pull down
 131  *     SD_CMD      ==> pull down
 132  *     SD_CLK      ==> pull down
 133  */
 134 static const u32 rts5260_sd_pull_ctl_disable_tbl[] = {
 135         RTSX_REG_PAIR(CARD_PULL_CTL1, 0x66),
 136         RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
 137         RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
 138         RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
 139         0,
 140 };
 141
 142 /* MS Pull Control Enable:
 143  *     MS CD       ==> pull up
 144  *     others      ==> pull down
 145  */
 146 static const u32 rts5260_ms_pull_ctl_enable_tbl[] = {
 147         RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
 148         RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
 149         RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
 150         0,
 151 };
 152
 153 /* MS Pull Control Disable:
 154  *     MS CD       ==> pull up
 155  *     others      ==> pull down
 156  */
 157 static const u32 rts5260_ms_pull_ctl_disable_tbl[] = {
 158         RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
 159         RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
 160         RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
 161         0,
 162 };
 163
 164 static int sd_set_sample_push_timing_sd30(struct rtsx_pcr *pcr)
 165 {
 166         rtsx_pci_write_register(pcr, SD_CFG1, SD_MODE_SELECT_MASK
 167                 | SD_ASYNC_FIFO_NOT_RST, SD_30_MODE | SD_ASYNC_FIFO_NOT_RST);
 168         rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, CLK_LOW_FREQ);
 169         rtsx_pci_write_register(pcr, CARD_CLK_SOURCE, 0xFF,
 170                         CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
 171         rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0);
 172
 173         return 0;
 174 }
 175
 176 static int rts5260_card_power_on(struct rtsx_pcr *pcr, int card)
 177 {
 178         struct rtsx_cr_option *option = &pcr->option;
 179
 180         if (option->ocp_en)
 181                 rtsx_pci_enable_ocp(pcr);
 182
 183
 184         rtsx_pci_write_register(pcr, LDO_CONFIG2, DV331812_VDD1, DV331812_VDD1);
 185         rtsx_pci_write_register(pcr, LDO_VCC_CFG0,
 186                          RTS5260_DVCC_TUNE_MASK, RTS5260_DVCC_33);
 187
 188         rtsx_pci_write_register(pcr, LDO_VCC_CFG1, LDO_POW_SDVDD1_MASK,
 189                         LDO_POW_SDVDD1_ON);
 190
 191         rtsx_pci_write_register(pcr, LDO_CONFIG2,
 192                          DV331812_POWERON, DV331812_POWERON);
 193         msleep(20);
 194
 195         if (pcr->extra_caps & EXTRA_CAPS_SD_SDR50 ||
 196             pcr->extra_caps & EXTRA_CAPS_SD_SDR104)
 197                 sd_set_sample_push_timing_sd30(pcr);
 198
 199         /* Initialize SD_CFG1 register */
 200         rtsx_pci_write_register(pcr, SD_CFG1, 0xFF,
 201                                 SD_CLK_DIVIDE_128 | SD_20_MODE);
 202
 203         rtsx_pci_write_register(pcr, SD_SAMPLE_POINT_CTL,
 204                                 0xFF, SD20_RX_POS_EDGE);
 205         rtsx_pci_write_register(pcr, SD_PUSH_POINT_CTL, 0xFF, 0);
 206         rtsx_pci_write_register(pcr, CARD_STOP, SD_STOP | SD_CLR_ERR,
 207                                 SD_STOP | SD_CLR_ERR);
 208
 209         /* Reset SD_CFG3 register */
 210         rtsx_pci_write_register(pcr, SD_CFG3, SD30_CLK_END_EN, 0);
 211         rtsx_pci_write_register(pcr, REG_SD_STOP_SDCLK_CFG,
 212                         SD30_CLK_STOP_CFG_EN | SD30_CLK_STOP_CFG1 |
 213                         SD30_CLK_STOP_CFG0, 0);
 214
 215         rtsx_pci_write_register(pcr, REG_PRE_RW_MODE, EN_INFINITE_MODE, 0);
 216
 217         return 0;
 218 }
 219
 220 static int rts5260_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
 221 {
 222         switch (voltage) {
 223         case OUTPUT_3V3:
 224                 rtsx_pci_write_register(pcr, LDO_CONFIG2,
 225                                         DV331812_VDD1, DV331812_VDD1);
 226                 rtsx_pci_write_register(pcr, LDO_DV18_CFG,
 227                                         DV331812_MASK, DV331812_33);
 228                 rtsx_pci_write_register(pcr, SD_PAD_CTL, SD_IO_USING_1V8, 0);
 229                 break;
 230         case OUTPUT_1V8:
 231                 rtsx_pci_write_register(pcr, LDO_CONFIG2,
 232                                         DV331812_VDD1, DV331812_VDD1);
 233                 rtsx_pci_write_register(pcr, LDO_DV18_CFG,
 234                                         DV331812_MASK, DV331812_17);
 235                 rtsx_pci_write_register(pcr, SD_PAD_CTL, SD_IO_USING_1V8,
 236                                         SD_IO_USING_1V8);
 237                 break;
 238         default:
 239                 return -EINVAL;
 240         }
 241
 242         /* set pad drive */
 243         rts5260_fill_driving(pcr, voltage);
 244
 245         return 0;
 246 }
 247
 248 static void rts5260_stop_cmd(struct rtsx_pcr *pcr)
 249 {
 250         rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD);
 251         rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA);
 252         rtsx_pci_write_register(pcr, RTS5260_DMA_RST_CTL_0,
 253                                 RTS5260_DMA_RST | RTS5260_ADMA3_RST,
 254                                 RTS5260_DMA_RST | RTS5260_ADMA3_RST);
 255         rtsx_pci_write_register(pcr, RBCTL, RB_FLUSH, RB_FLUSH);
 256 }
 257
 258 static void rts5260_card_before_power_off(struct rtsx_pcr *pcr)
 259 {
 260         rts5260_stop_cmd(pcr);
 261         rts5260_switch_output_voltage(pcr, OUTPUT_3V3);
 262
 263 }
 264
 265 static int rts5260_card_power_off(struct rtsx_pcr *pcr, int card)
 266 {
 267         int err = 0;
 268
 269         rts5260_card_before_power_off(pcr);
 270         err = rtsx_pci_write_register(pcr, LDO_VCC_CFG1,
 271                          LDO_POW_SDVDD1_MASK, LDO_POW_SDVDD1_OFF);
 272         err = rtsx_pci_write_register(pcr, LDO_CONFIG2,
 273                          DV331812_POWERON, DV331812_POWEROFF);
 274         if (pcr->option.ocp_en)
 275                 rtsx_pci_disable_ocp(pcr);
 276
 277         return err;
 278 }
 279
 280 static void rts5260_init_ocp(struct rtsx_pcr *pcr)
 281 {
 282         struct rtsx_cr_option *option = &pcr->option;
 283
 284         if (option->ocp_en) {
 285                 u8 mask, val;
 286
 287
 288                 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL,
 289                                 RTS5260_DVCC_OCP_THD_MASK,
 290                                 option->sd_800mA_ocp_thd);
 291
 292                 rtsx_pci_write_register(pcr, RTS5260_DV331812_CFG,
 293                                 RTS5260_DV331812_OCP_THD_MASK,
 294                                 RTS5260_DV331812_OCP_THD_270);
 295
 296                 mask = SD_OCP_GLITCH_MASK;
 297                 val = pcr->hw_param.ocp_glitch;
 298                 rtsx_pci_write_register(pcr, REG_OCPGLITCH, mask, val);
 299                 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL,
 300                                         RTS5260_DVCC_OCP_EN |
 301                                         RTS5260_DVCC_OCP_CL_EN,
 302                                         RTS5260_DVCC_OCP_EN |
 303                                         RTS5260_DVCC_OCP_CL_EN);
 304
 305                 rtsx_pci_enable_ocp(pcr);
 306         } else {
 307                 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL,
 308                                         RTS5260_DVCC_OCP_EN |
 309                                         RTS5260_DVCC_OCP_CL_EN, 0);
 310         }
 311 }
 312
 313 static void rts5260_enable_ocp(struct rtsx_pcr *pcr)
 314 {
 315         u8 val = 0;
 316
 317         val = SD_OCP_INT_EN | SD_DETECT_EN;
 318         rtsx_pci_write_register(pcr, REG_OCPCTL, 0xFF, val);
 319
 320 }
 321
 322 static void rts5260_disable_ocp(struct rtsx_pcr *pcr)
 323 {
 324         u8 mask = 0;
 325
 326         mask = SD_OCP_INT_EN | SD_DETECT_EN;
 327         rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
 328
 329 }
 330
 331
 332 static int rts5260_get_ocpstat(struct rtsx_pcr *pcr, u8 *val)
 333 {
 334         return rtsx_pci_read_register(pcr, REG_OCPSTAT, val);
 335 }
 336
 337 static int rts5260_get_ocpstat2(struct rtsx_pcr *pcr, u8 *val)
 338 {
 339         return rtsx_pci_read_register(pcr, REG_DV3318_OCPSTAT, val);
 340 }
 341
 342 static void rts5260_clear_ocpstat(struct rtsx_pcr *pcr)
 343 {
 344         u8 mask = 0;
 345         u8 val = 0;
 346
 347         mask = SD_OCP_INT_CLR | SD_OC_CLR;
 348         val = SD_OCP_INT_CLR | SD_OC_CLR;
 349
 350         rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val);
 351         rtsx_pci_write_register(pcr, REG_DV3318_OCPCTL,
 352                                 DV3318_OCP_INT_CLR | DV3318_OCP_CLR,
 353                                 DV3318_OCP_INT_CLR | DV3318_OCP_CLR);
 354         udelay(10);
 355         rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
 356         rtsx_pci_write_register(pcr, REG_DV3318_OCPCTL,
 357                                 DV3318_OCP_INT_CLR | DV3318_OCP_CLR, 0);
 358 }
 359
 360 static void rts5260_process_ocp(struct rtsx_pcr *pcr)
 361 {
 362         if (!pcr->option.ocp_en)
 363                 return;
 364
 365         rtsx_pci_get_ocpstat(pcr, &pcr->ocp_stat);
 366         rts5260_get_ocpstat2(pcr, &pcr->ocp_stat2);
 367
 368         if ((pcr->ocp_stat & (SD_OC_NOW | SD_OC_EVER)) ||
 369                 (pcr->ocp_stat2 & (DV3318_OCP_NOW | DV3318_OCP_EVER))) {
 370                 rtsx_pci_card_power_off(pcr, RTSX_SD_CARD);
 371                 rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0);
 372                 rtsx_pci_clear_ocpstat(pcr);
 373                 pcr->ocp_stat = 0;
 374                 pcr->ocp_stat2 = 0;
 375         }
 376
 377 }
 378
 379 static int rts5260_init_hw(struct rtsx_pcr *pcr)
 380 {
 381         int err;
 382
 383         rtsx_pci_init_cmd(pcr);
 384
 385         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, L1SUB_CONFIG1,
 386                          AUX_CLK_ACTIVE_SEL_MASK, MAC_CKSW_DONE);
 387         /* Rest L1SUB Config */
 388         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, L1SUB_CONFIG3, 0xFF, 0x00);
 389         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CLK_FORCE_CTL,
 390                          CLK_PM_EN, CLK_PM_EN);
 391         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWD_SUSPEND_EN, 0xFF, 0xFF);
 392         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
 393                          PWR_GATE_EN, PWR_GATE_EN);
 394         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, REG_VREF,
 395                          PWD_SUSPND_EN, PWD_SUSPND_EN);
 396         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RBCTL,
 397                          U_AUTO_DMA_EN_MASK, U_AUTO_DMA_DISABLE);
 398
 399         if (pcr->flags & PCR_REVERSE_SOCKET)
 400                 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB0, 0xB0);
 401         else
 402                 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB0, 0x80);
 403
 404         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OBFF_CFG,
 405                          OBFF_EN_MASK, OBFF_DISABLE);
 406
 407         err = rtsx_pci_send_cmd(pcr, CMD_TIMEOUT_DEF);
 408         if (err < 0)
 409                 return err;
 410
 411         rtsx_pci_init_ocp(pcr);
 412
 413         return 0;
 414 }
 415
 416 static void rts5260_pwr_saving_setting(struct rtsx_pcr *pcr)
 417 {
 418         int lss_l1_1, lss_l1_2;
 419
 420         lss_l1_1 = rtsx_check_dev_flag(pcr, ASPM_L1_1_EN)
 421                         | rtsx_check_dev_flag(pcr, PM_L1_1_EN);
 422         lss_l1_2 = rtsx_check_dev_flag(pcr, ASPM_L1_2_EN)
 423                         | rtsx_check_dev_flag(pcr, PM_L1_2_EN);
 424
 425         rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0xFF, 0);
 426         if (lss_l1_2) {
 427                 pcr_dbg(pcr, "Set parameters for L1.2.");
 428                 rtsx_pci_write_register(pcr, PWR_GLOBAL_CTRL,
 429                                         0xFF, PCIE_L1_2_EN);
 430                 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL,
 431                                         RTS5260_DVCC_OCP_EN |
 432                                         RTS5260_DVCC_OCP_CL_EN,
 433                                         RTS5260_DVCC_OCP_EN |
 434                                         RTS5260_DVCC_OCP_CL_EN);
 435
 436                 rtsx_pci_write_register(pcr, PWR_FE_CTL,
 437                                         0xFF, PCIE_L1_2_PD_FE_EN);
 438         } else if (lss_l1_1) {
 439                 pcr_dbg(pcr, "Set parameters for L1.1.");
 440                 rtsx_pci_write_register(pcr, PWR_GLOBAL_CTRL,
 441                                         0xFF, PCIE_L1_1_EN);
 442                 rtsx_pci_write_register(pcr, PWR_FE_CTL,
 443                                         0xFF, PCIE_L1_1_PD_FE_EN);
 444         } else {
 445                 pcr_dbg(pcr, "Set parameters for L1.");
 446                 rtsx_pci_write_register(pcr, PWR_GLOBAL_CTRL,
 447                                         0xFF, PCIE_L1_0_EN);
 448                 rtsx_pci_write_register(pcr, PWR_FE_CTL,
 449                                         0xFF, PCIE_L1_0_PD_FE_EN);
 450         }
 451
 452         rtsx_pci_write_register(pcr, CFG_L1_0_PCIE_DPHY_RET_VALUE,
 453                                 0xFF, CFG_L1_0_RET_VALUE_DEFAULT);
 454         rtsx_pci_write_register(pcr, CFG_L1_0_PCIE_MAC_RET_VALUE,
 455                                 0xFF, CFG_L1_0_RET_VALUE_DEFAULT);
 456         rtsx_pci_write_register(pcr, CFG_L1_0_CRC_SD30_RET_VALUE,
 457                                 0xFF, CFG_L1_0_RET_VALUE_DEFAULT);
 458         rtsx_pci_write_register(pcr, CFG_L1_0_CRC_SD40_RET_VALUE,
 459                                 0xFF, CFG_L1_0_RET_VALUE_DEFAULT);
 460         rtsx_pci_write_register(pcr, CFG_L1_0_SYS_RET_VALUE,
 461                                 0xFF, CFG_L1_0_RET_VALUE_DEFAULT);
 462         /*Option cut APHY*/
 463         rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_0,
 464                                 0xFF, CFG_PCIE_APHY_OFF_0_DEFAULT);
 465         rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_1,
 466                                 0xFF, CFG_PCIE_APHY_OFF_1_DEFAULT);
 467         rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_2,
 468                                 0xFF, CFG_PCIE_APHY_OFF_2_DEFAULT);
 469         rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_3,
 470                                 0xFF, CFG_PCIE_APHY_OFF_3_DEFAULT);
 471         /*CDR DEC*/
 472         rtsx_pci_write_register(pcr, PWC_CDR, 0xFF, PWC_CDR_DEFAULT);
 473         /*PWMPFM*/
 474         rtsx_pci_write_register(pcr, CFG_LP_FPWM_VALUE,
 475                                 0xFF, CFG_LP_FPWM_VALUE_DEFAULT);
 476         /*No Power Saving WA*/
 477         rtsx_pci_write_register(pcr, CFG_L1_0_CRC_MISC_RET_VALUE,
 478                                 0xFF, CFG_L1_0_CRC_MISC_RET_VALUE_DEFAULT);
 479 }
 480
 481 static void rts5260_init_from_cfg(struct rtsx_pcr *pcr)
 482 {
 483         struct pci_dev *pdev = pcr->pci;
 484         int l1ss;
 485         struct rtsx_cr_option *option = &pcr->option;
 486         u32 lval;
 487
 488         l1ss = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_L1SS);
 489         if (!l1ss)
 490                 return;
 491
 492         pci_read_config_dword(pdev, l1ss + PCI_L1SS_CTL1, &lval);
 493
 494         if (lval & PCI_L1SS_CTL1_ASPM_L1_1)
 495                 rtsx_set_dev_flag(pcr, ASPM_L1_1_EN);
 496
 497         if (lval & PCI_L1SS_CTL1_ASPM_L1_2)
 498                 rtsx_set_dev_flag(pcr, ASPM_L1_2_EN);
 499
 500         if (lval & PCI_L1SS_CTL1_PCIPM_L1_1)
 501                 rtsx_set_dev_flag(pcr, PM_L1_1_EN);
 502
 503         if (lval & PCI_L1SS_CTL1_PCIPM_L1_2)
 504                 rtsx_set_dev_flag(pcr, PM_L1_2_EN);
 505
 506         rts5260_pwr_saving_setting(pcr);
 507
 508         if (option->ltr_en) {
 509                 u16 val;
 510
 511                 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &val);
 512                 if (val & PCI_EXP_DEVCTL2_LTR_EN) {
 513                         option->ltr_enabled = true;
 514                         option->ltr_active = true;
 515                         rtsx_set_ltr_latency(pcr, option->ltr_active_latency);
 516                 } else {
 517                         option->ltr_enabled = false;
 518                 }
 519         }
 520
 521         if (rtsx_check_dev_flag(pcr, ASPM_L1_1_EN | ASPM_L1_2_EN
 522                                 | PM_L1_1_EN | PM_L1_2_EN))
 523                 option->force_clkreq_0 = false;
 524         else
 525                 option->force_clkreq_0 = true;
 526 }
 527
 528 static int rts5260_extra_init_hw(struct rtsx_pcr *pcr)
 529 {
 530         struct rtsx_cr_option *option = &pcr->option;
 531
 532         /* Set mcu_cnt to 7 to ensure data can be sampled properly */
 533         rtsx_pci_write_register(pcr, 0xFC03, 0x7F, 0x07);
 534         rtsx_pci_write_register(pcr, SSC_DIV_N_0, 0xFF, 0x5D);
 535
 536         rts5260_init_from_cfg(pcr);
 537
 538         /* force no MDIO*/
 539         rtsx_pci_write_register(pcr, RTS5260_AUTOLOAD_CFG4,
 540                                 0xFF, RTS5260_MIMO_DISABLE);
 541         /*Modify SDVCC Tune Default Parameters!*/
 542         rtsx_pci_write_register(pcr, LDO_VCC_CFG0,
 543                                 RTS5260_DVCC_TUNE_MASK, RTS5260_DVCC_33);
 544
 545         rtsx_pci_write_register(pcr, PCLK_CTL, PCLK_MODE_SEL, PCLK_MODE_SEL);
 546
 547         rts5260_init_hw(pcr);
 548
 549         /*
 550          * If u_force_clkreq_0 is enabled, CLKREQ# PIN will be forced
 551          * to drive low, and we forcibly request clock.
 552          */
 553         if (option->force_clkreq_0)
 554                 rtsx_pci_write_register(pcr, PETXCFG,
 555                                  FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_LOW);
 556         else
 557                 rtsx_pci_write_register(pcr, PETXCFG,
 558                                  FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_HIGH);
 559
 560         rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x10, 0x00);
 561
 562         return 0;
 563 }
 564
 565 static void rts5260_set_l1off_cfg_sub_d0(struct rtsx_pcr *pcr, int active)
 566 {
 567         struct rtsx_cr_option *option = &pcr->option;
 568         u32 interrupt = rtsx_pci_readl(pcr, RTSX_BIPR);
 569         int card_exist = (interrupt & SD_EXIST) | (interrupt & MS_EXIST);
 570         int aspm_L1_1, aspm_L1_2;
 571         u8 val = 0;
 572
 573         aspm_L1_1 = rtsx_check_dev_flag(pcr, ASPM_L1_1_EN);
 574         aspm_L1_2 = rtsx_check_dev_flag(pcr, ASPM_L1_2_EN);
 575
 576         if (active) {
 577                 /* run, latency: 60us */
 578                 if (aspm_L1_1)
 579                         val = option->ltr_l1off_snooze_sspwrgate;
 580         } else {
 581                 /* l1off, latency: 300us */
 582                 if (aspm_L1_2)
 583                         val = option->ltr_l1off_sspwrgate;
 584         }
 585
 586         if (aspm_L1_1 || aspm_L1_2) {
 587                 if (rtsx_check_dev_flag(pcr,
 588                                         LTR_L1SS_PWR_GATE_CHECK_CARD_EN)) {
 589                         if (card_exist)
 590                                 val &= ~L1OFF_MBIAS2_EN_5250;
 591                         else
 592                                 val |= L1OFF_MBIAS2_EN_5250;
 593                 }
 594         }
 595         rtsx_set_l1off_sub(pcr, val);
 596 }
 597
 598 static const struct pcr_ops rts5260_pcr_ops = {
 599         .fetch_vendor_settings = rtsx_base_fetch_vendor_settings,
 600         .turn_on_led = rts5260_turn_on_led,
 601         .turn_off_led = rts5260_turn_off_led,
 602         .extra_init_hw = rts5260_extra_init_hw,
 603         .enable_auto_blink = rtsx_base_enable_auto_blink,
 604         .disable_auto_blink = rtsx_base_disable_auto_blink,
 605         .card_power_on = rts5260_card_power_on,
 606         .card_power_off = rts5260_card_power_off,
 607         .switch_output_voltage = rts5260_switch_output_voltage,
 608         .stop_cmd = rts5260_stop_cmd,
 609         .set_l1off_cfg_sub_d0 = rts5260_set_l1off_cfg_sub_d0,
 610         .enable_ocp = rts5260_enable_ocp,
 611         .disable_ocp = rts5260_disable_ocp,
 612         .init_ocp = rts5260_init_ocp,
 613         .process_ocp = rts5260_process_ocp,
 614         .get_ocpstat = rts5260_get_ocpstat,
 615         .clear_ocpstat = rts5260_clear_ocpstat,
 616 };
 617
 618 void rts5260_init_params(struct rtsx_pcr *pcr)
 619 {
 620         struct rtsx_cr_option *option = &pcr->option;
 621         struct rtsx_hw_param *hw_param = &pcr->hw_param;
 622
 623         pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
 624         pcr->num_slots = 2;
 625
 626         pcr->flags = 0;
 627         pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT;
 628         pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
 629         pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
 630         pcr->aspm_en = ASPM_L1_EN;
 631         pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 29, 11);
 632         pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
 633
 634         pcr->ic_version = rts5260_get_ic_version(pcr);
 635         pcr->sd_pull_ctl_enable_tbl = rts5260_sd_pull_ctl_enable_tbl;
 636         pcr->sd_pull_ctl_disable_tbl = rts5260_sd_pull_ctl_disable_tbl;
 637         pcr->ms_pull_ctl_enable_tbl = rts5260_ms_pull_ctl_enable_tbl;
 638         pcr->ms_pull_ctl_disable_tbl = rts5260_ms_pull_ctl_disable_tbl;
 639
 640         pcr->reg_pm_ctrl3 = RTS524A_PM_CTRL3;
 641
 642         pcr->ops = &rts5260_pcr_ops;
 643
 644         option->dev_flags = (LTR_L1SS_PWR_GATE_CHECK_CARD_EN
 645                                 | LTR_L1SS_PWR_GATE_EN);
 646         option->ltr_en = true;
 647
 648         /* init latency of active, idle, L1OFF to 60us, 300us, 3ms */
 649         option->ltr_active_latency = LTR_ACTIVE_LATENCY_DEF;
 650         option->ltr_idle_latency = LTR_IDLE_LATENCY_DEF;
 651         option->ltr_l1off_latency = LTR_L1OFF_LATENCY_DEF;
 652         option->l1_snooze_delay = L1_SNOOZE_DELAY_DEF;
 653         option->ltr_l1off_sspwrgate = LTR_L1OFF_SSPWRGATE_5250_DEF;
 654         option->ltr_l1off_snooze_sspwrgate =
 655                 LTR_L1OFF_SNOOZE_SSPWRGATE_5250_DEF;
 656
 657         option->ocp_en = 1;
 658         if (option->ocp_en)
 659                 hw_param->interrupt_en |= SD_OC_INT_EN;
 660         hw_param->ocp_glitch =  SD_OCP_GLITCH_100U | SDVIO_OCP_GLITCH_800U;
 661         option->sd_400mA_ocp_thd = RTS5260_DVCC_OCP_THD_550;
 662         option->sd_800mA_ocp_thd = RTS5260_DVCC_OCP_THD_970;
 663 }