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[6][3] = { 30 {0x94, 0x94, 0x94}, 31 {0x11, 0x11, 0x18}, 32 {0x55, 0x55, 0x5C}, 33 {0x94, 0x94, 0x94}, 34 {0x94, 0x94, 0x94}, 35 {0xFF, 0xFF, 0xFF}, 36 }; 37 u8 driving_1v8[6][3] = { 38 {0x9A, 0x89, 0x89}, 39 {0xC4, 0xC4, 0xC4}, 40 {0x3C, 0x3C, 0x3C}, 41 {0x9B, 0x99, 0x99}, 42 {0x9A, 0x89, 0x89}, 43 {0xFE, 0xFE, 0xFE}, 44 }; 45 u8 (*driving)[3], drive_sel; 46 47 if (voltage == OUTPUT_3V3) { 48 driving = driving_3v3; 49 drive_sel = pcr->sd30_drive_sel_3v3; 50 } else { 51 driving = driving_1v8; 52 drive_sel = pcr->sd30_drive_sel_1v8; 53 } 54 55 rtsx_pci_write_register(pcr, SD30_CLK_DRIVE_SEL, 56 0xFF, driving[drive_sel][0]); 57 58 rtsx_pci_write_register(pcr, SD30_CMD_DRIVE_SEL, 59 0xFF, driving[drive_sel][1]); 60 61 rtsx_pci_write_register(pcr, SD30_CMD_DRIVE_SEL, 62 0xFF, driving[drive_sel][2]); 63 } 64 65 static void rtsx_base_fetch_vendor_settings(struct rtsx_pcr *pcr) 66 { 67 u32 reg; 68 69 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, ®); 70 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg); 71 72 if (!rtsx_vendor_setting_valid(reg)) { 73 pcr_dbg(pcr, "skip fetch vendor setting\n"); 74 return; 75 } 76 77 pcr->aspm_en = rtsx_reg_to_aspm(reg); 78 pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg); 79 pcr->card_drive_sel &= 0x3F; 80 pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg); 81 82 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG2, ®); 83 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg); 84 pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg); 85 if (rtsx_reg_check_reverse_socket(reg)) 86 pcr->flags |= PCR_REVERSE_SOCKET; 87 } 88 89 static void rtsx_base_force_power_down(struct rtsx_pcr *pcr, u8 pm_state) 90 { 91 /* Set relink_time to 0 */ 92 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, MASK_8_BIT_DEF, 0); 93 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, MASK_8_BIT_DEF, 0); 94 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 95 RELINK_TIME_MASK, 0); 96 97 if (pm_state == HOST_ENTER_S3) 98 rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 99 D3_DELINK_MODE_EN, D3_DELINK_MODE_EN); 100 101 rtsx_pci_write_register(pcr, FPDCTL, ALL_POWER_DOWN, ALL_POWER_DOWN); 102 } 103 104 static int rtsx_base_enable_auto_blink(struct rtsx_pcr *pcr) 105 { 106 return rtsx_pci_write_register(pcr, OLT_LED_CTL, 107 LED_SHINE_MASK, LED_SHINE_EN); 108 } 109 110 static int rtsx_base_disable_auto_blink(struct rtsx_pcr *pcr) 111 { 112 return rtsx_pci_write_register(pcr, OLT_LED_CTL, 113 LED_SHINE_MASK, LED_SHINE_DISABLE); 114 } 115 116 static int rts5260_turn_on_led(struct rtsx_pcr *pcr) 117 { 118 return rtsx_pci_write_register(pcr, RTS5260_REG_GPIO_CTL0, 119 RTS5260_REG_GPIO_MASK, RTS5260_REG_GPIO_ON); 120 } 121 122 static int rts5260_turn_off_led(struct rtsx_pcr *pcr) 123 { 124 return rtsx_pci_write_register(pcr, RTS5260_REG_GPIO_CTL0, 125 RTS5260_REG_GPIO_MASK, RTS5260_REG_GPIO_OFF); 126 } 127 128 /* SD Pull Control Enable: 129 * SD_DAT[3:0] ==> pull up 130 * SD_CD ==> pull up 131 * SD_WP ==> pull up 132 * SD_CMD ==> pull up 133 * SD_CLK ==> pull down 134 */ 135 static const u32 rts5260_sd_pull_ctl_enable_tbl[] = { 136 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x66), 137 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA), 138 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9), 139 RTSX_REG_PAIR(CARD_PULL_CTL4, 0xAA), 140 0, 141 }; 142 143 /* SD Pull Control Disable: 144 * SD_DAT[3:0] ==> pull down 145 * SD_CD ==> pull up 146 * SD_WP ==> pull down 147 * SD_CMD ==> pull down 148 * SD_CLK ==> pull down 149 */ 150 static const u32 rts5260_sd_pull_ctl_disable_tbl[] = { 151 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x66), 152 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), 153 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5), 154 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55), 155 0, 156 }; 157 158 /* MS Pull Control Enable: 159 * MS CD ==> pull up 160 * others ==> pull down 161 */ 162 static const u32 rts5260_ms_pull_ctl_enable_tbl[] = { 163 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55), 164 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55), 165 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15), 166 0, 167 }; 168 169 /* MS Pull Control Disable: 170 * MS CD ==> pull up 171 * others ==> pull down 172 */ 173 static const u32 rts5260_ms_pull_ctl_disable_tbl[] = { 174 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55), 175 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55), 176 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15), 177 0, 178 }; 179 180 static int sd_set_sample_push_timing_sd30(struct rtsx_pcr *pcr) 181 { 182 rtsx_pci_write_register(pcr, SD_CFG1, SD_MODE_SELECT_MASK 183 | SD_ASYNC_FIFO_NOT_RST, SD_30_MODE | SD_ASYNC_FIFO_NOT_RST); 184 rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, CLK_LOW_FREQ); 185 rtsx_pci_write_register(pcr, CARD_CLK_SOURCE, 0xFF, 186 CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); 187 rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0); 188 189 return 0; 190 } 191 192 static int rts5260_card_power_on(struct rtsx_pcr *pcr, int card) 193 { 194 struct rtsx_cr_option *option = &pcr->option; 195 196 if (option->ocp_en) 197 rtsx_pci_enable_ocp(pcr); 198 199 200 rtsx_pci_write_register(pcr, LDO_CONFIG2, DV331812_VDD1, DV331812_VDD1); 201 rtsx_pci_write_register(pcr, LDO_VCC_CFG0, 202 RTS5260_DVCC_TUNE_MASK, RTS5260_DVCC_33); 203 204 rtsx_pci_write_register(pcr, LDO_VCC_CFG1, LDO_POW_SDVDD1_MASK, 205 LDO_POW_SDVDD1_ON); 206 207 rtsx_pci_write_register(pcr, LDO_CONFIG2, 208 DV331812_POWERON, DV331812_POWERON); 209 msleep(20); 210 211 if (pcr->extra_caps & EXTRA_CAPS_SD_SDR50 || 212 pcr->extra_caps & EXTRA_CAPS_SD_SDR104) 213 sd_set_sample_push_timing_sd30(pcr); 214 215 /* Initialize SD_CFG1 register */ 216 rtsx_pci_write_register(pcr, SD_CFG1, 0xFF, 217 SD_CLK_DIVIDE_128 | SD_20_MODE); 218 219 rtsx_pci_write_register(pcr, SD_SAMPLE_POINT_CTL, 220 0xFF, SD20_RX_POS_EDGE); 221 rtsx_pci_write_register(pcr, SD_PUSH_POINT_CTL, 0xFF, 0); 222 rtsx_pci_write_register(pcr, CARD_STOP, SD_STOP | SD_CLR_ERR, 223 SD_STOP | SD_CLR_ERR); 224 225 /* Reset SD_CFG3 register */ 226 rtsx_pci_write_register(pcr, SD_CFG3, SD30_CLK_END_EN, 0); 227 rtsx_pci_write_register(pcr, REG_SD_STOP_SDCLK_CFG, 228 SD30_CLK_STOP_CFG_EN | SD30_CLK_STOP_CFG1 | 229 SD30_CLK_STOP_CFG0, 0); 230 231 rtsx_pci_write_register(pcr, REG_PRE_RW_MODE, EN_INFINITE_MODE, 0); 232 233 return 0; 234 } 235 236 static int rts5260_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage) 237 { 238 switch (voltage) { 239 case OUTPUT_3V3: 240 rtsx_pci_write_register(pcr, LDO_CONFIG2, 241 DV331812_VDD1, DV331812_VDD1); 242 rtsx_pci_write_register(pcr, LDO_DV18_CFG, 243 DV331812_MASK, DV331812_33); 244 rtsx_pci_write_register(pcr, SD_PAD_CTL, SD_IO_USING_1V8, 0); 245 break; 246 case OUTPUT_1V8: 247 rtsx_pci_write_register(pcr, LDO_CONFIG2, 248 DV331812_VDD1, DV331812_VDD1); 249 rtsx_pci_write_register(pcr, LDO_DV18_CFG, 250 DV331812_MASK, DV331812_17); 251 rtsx_pci_write_register(pcr, SD_PAD_CTL, SD_IO_USING_1V8, 252 SD_IO_USING_1V8); 253 break; 254 default: 255 return -EINVAL; 256 } 257 258 /* set pad drive */ 259 rts5260_fill_driving(pcr, voltage); 260 261 return 0; 262 } 263 264 static void rts5260_stop_cmd(struct rtsx_pcr *pcr) 265 { 266 rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD); 267 rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA); 268 rtsx_pci_write_register(pcr, RTS5260_DMA_RST_CTL_0, 269 RTS5260_DMA_RST | RTS5260_ADMA3_RST, 270 RTS5260_DMA_RST | RTS5260_ADMA3_RST); 271 rtsx_pci_write_register(pcr, RBCTL, RB_FLUSH, RB_FLUSH); 272 } 273 274 static void rts5260_card_before_power_off(struct rtsx_pcr *pcr) 275 { 276 rts5260_stop_cmd(pcr); 277 rts5260_switch_output_voltage(pcr, OUTPUT_3V3); 278 279 } 280 281 static int rts5260_card_power_off(struct rtsx_pcr *pcr, int card) 282 { 283 int err = 0; 284 285 rts5260_card_before_power_off(pcr); 286 err = rtsx_pci_write_register(pcr, LDO_VCC_CFG1, 287 LDO_POW_SDVDD1_MASK, LDO_POW_SDVDD1_OFF); 288 err = rtsx_pci_write_register(pcr, LDO_CONFIG2, 289 DV331812_POWERON, DV331812_POWEROFF); 290 if (pcr->option.ocp_en) 291 rtsx_pci_disable_ocp(pcr); 292 293 return err; 294 } 295 296 static void rts5260_init_ocp(struct rtsx_pcr *pcr) 297 { 298 struct rtsx_cr_option *option = &pcr->option; 299 300 if (option->ocp_en) { 301 u8 mask, val; 302 303 304 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL, 305 RTS5260_DVCC_OCP_THD_MASK, 306 option->sd_800mA_ocp_thd); 307 308 rtsx_pci_write_register(pcr, RTS5260_DV331812_CFG, 309 RTS5260_DV331812_OCP_THD_MASK, 310 RTS5260_DV331812_OCP_THD_270); 311 312 mask = SD_OCP_GLITCH_MASK; 313 val = pcr->hw_param.ocp_glitch; 314 rtsx_pci_write_register(pcr, REG_OCPGLITCH, mask, val); 315 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL, 316 RTS5260_DVCC_OCP_EN | 317 RTS5260_DVCC_OCP_CL_EN, 318 RTS5260_DVCC_OCP_EN | 319 RTS5260_DVCC_OCP_CL_EN); 320 321 rtsx_pci_enable_ocp(pcr); 322 } else { 323 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL, 324 RTS5260_DVCC_OCP_EN | 325 RTS5260_DVCC_OCP_CL_EN, 0); 326 } 327 } 328 329 static void rts5260_enable_ocp(struct rtsx_pcr *pcr) 330 { 331 u8 val = 0; 332 333 val = SD_OCP_INT_EN | SD_DETECT_EN; 334 rtsx_pci_write_register(pcr, REG_OCPCTL, 0xFF, val); 335 336 } 337 338 static void rts5260_disable_ocp(struct rtsx_pcr *pcr) 339 { 340 u8 mask = 0; 341 342 mask = SD_OCP_INT_EN | SD_DETECT_EN; 343 rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0); 344 345 } 346 347 348 static int rts5260_get_ocpstat(struct rtsx_pcr *pcr, u8 *val) 349 { 350 return rtsx_pci_read_register(pcr, REG_OCPSTAT, val); 351 } 352 353 static int rts5260_get_ocpstat2(struct rtsx_pcr *pcr, u8 *val) 354 { 355 return rtsx_pci_read_register(pcr, REG_DV3318_OCPSTAT, val); 356 } 357 358 static void rts5260_clear_ocpstat(struct rtsx_pcr *pcr) 359 { 360 u8 mask = 0; 361 u8 val = 0; 362 363 mask = SD_OCP_INT_CLR | SD_OC_CLR; 364 val = SD_OCP_INT_CLR | SD_OC_CLR; 365 366 rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val); 367 rtsx_pci_write_register(pcr, REG_DV3318_OCPCTL, 368 DV3318_OCP_INT_CLR | DV3318_OCP_CLR, 369 DV3318_OCP_INT_CLR | DV3318_OCP_CLR); 370 udelay(10); 371 rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0); 372 rtsx_pci_write_register(pcr, REG_DV3318_OCPCTL, 373 DV3318_OCP_INT_CLR | DV3318_OCP_CLR, 0); 374 } 375 376 static void rts5260_process_ocp(struct rtsx_pcr *pcr) 377 { 378 if (!pcr->option.ocp_en) 379 return; 380 381 rtsx_pci_get_ocpstat(pcr, &pcr->ocp_stat); 382 rts5260_get_ocpstat2(pcr, &pcr->ocp_stat2); 383 384 if ((pcr->ocp_stat & (SD_OC_NOW | SD_OC_EVER)) || 385 (pcr->ocp_stat2 & (DV3318_OCP_NOW | DV3318_OCP_EVER))) { 386 rtsx_pci_card_power_off(pcr, RTSX_SD_CARD); 387 rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0); 388 rtsx_pci_clear_ocpstat(pcr); 389 pcr->ocp_stat = 0; 390 pcr->ocp_stat2 = 0; 391 } 392 393 } 394 395 static int rts5260_init_hw(struct rtsx_pcr *pcr) 396 { 397 int err; 398 399 rtsx_pci_init_cmd(pcr); 400 401 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, L1SUB_CONFIG1, 402 AUX_CLK_ACTIVE_SEL_MASK, MAC_CKSW_DONE); 403 /* Rest L1SUB Config */ 404 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, L1SUB_CONFIG3, 0xFF, 0x00); 405 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CLK_FORCE_CTL, 406 CLK_PM_EN, CLK_PM_EN); 407 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWD_SUSPEND_EN, 0xFF, 0xFF); 408 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL, 409 PWR_GATE_EN, PWR_GATE_EN); 410 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, REG_VREF, 411 PWD_SUSPND_EN, PWD_SUSPND_EN); 412 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RBCTL, 413 U_AUTO_DMA_EN_MASK, U_AUTO_DMA_DISABLE); 414 415 if (pcr->flags & PCR_REVERSE_SOCKET) 416 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB0, 0xB0); 417 else 418 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB0, 0x80); 419 420 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OBFF_CFG, 421 OBFF_EN_MASK, OBFF_DISABLE); 422 423 err = rtsx_pci_send_cmd(pcr, CMD_TIMEOUT_DEF); 424 if (err < 0) 425 return err; 426 427 rtsx_pci_init_ocp(pcr); 428 429 return 0; 430 } 431 432 static void rts5260_pwr_saving_setting(struct rtsx_pcr *pcr) 433 { 434 int lss_l1_1, lss_l1_2; 435 436 lss_l1_1 = rtsx_check_dev_flag(pcr, ASPM_L1_1_EN) 437 | rtsx_check_dev_flag(pcr, PM_L1_1_EN); 438 lss_l1_2 = rtsx_check_dev_flag(pcr, ASPM_L1_2_EN) 439 | rtsx_check_dev_flag(pcr, PM_L1_2_EN); 440 441 rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0xFF, 0); 442 if (lss_l1_2) { 443 pcr_dbg(pcr, "Set parameters for L1.2."); 444 rtsx_pci_write_register(pcr, PWR_GLOBAL_CTRL, 445 0xFF, PCIE_L1_2_EN); 446 rtsx_pci_write_register(pcr, RTS5260_DVCC_CTRL, 447 RTS5260_DVCC_OCP_EN | 448 RTS5260_DVCC_OCP_CL_EN, 449 RTS5260_DVCC_OCP_EN | 450 RTS5260_DVCC_OCP_CL_EN); 451 452 rtsx_pci_write_register(pcr, PWR_FE_CTL, 453 0xFF, PCIE_L1_2_PD_FE_EN); 454 } else if (lss_l1_1) { 455 pcr_dbg(pcr, "Set parameters for L1.1."); 456 rtsx_pci_write_register(pcr, PWR_GLOBAL_CTRL, 457 0xFF, PCIE_L1_1_EN); 458 rtsx_pci_write_register(pcr, PWR_FE_CTL, 459 0xFF, PCIE_L1_1_PD_FE_EN); 460 } else { 461 pcr_dbg(pcr, "Set parameters for L1."); 462 rtsx_pci_write_register(pcr, PWR_GLOBAL_CTRL, 463 0xFF, PCIE_L1_0_EN); 464 rtsx_pci_write_register(pcr, PWR_FE_CTL, 465 0xFF, PCIE_L1_0_PD_FE_EN); 466 } 467 468 rtsx_pci_write_register(pcr, CFG_L1_0_PCIE_DPHY_RET_VALUE, 469 0xFF, CFG_L1_0_RET_VALUE_DEFAULT); 470 rtsx_pci_write_register(pcr, CFG_L1_0_PCIE_MAC_RET_VALUE, 471 0xFF, CFG_L1_0_RET_VALUE_DEFAULT); 472 rtsx_pci_write_register(pcr, CFG_L1_0_CRC_SD30_RET_VALUE, 473 0xFF, CFG_L1_0_RET_VALUE_DEFAULT); 474 rtsx_pci_write_register(pcr, CFG_L1_0_CRC_SD40_RET_VALUE, 475 0xFF, CFG_L1_0_RET_VALUE_DEFAULT); 476 rtsx_pci_write_register(pcr, CFG_L1_0_SYS_RET_VALUE, 477 0xFF, CFG_L1_0_RET_VALUE_DEFAULT); 478 /*Option cut APHY*/ 479 rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_0, 480 0xFF, CFG_PCIE_APHY_OFF_0_DEFAULT); 481 rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_1, 482 0xFF, CFG_PCIE_APHY_OFF_1_DEFAULT); 483 rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_2, 484 0xFF, CFG_PCIE_APHY_OFF_2_DEFAULT); 485 rtsx_pci_write_register(pcr, CFG_PCIE_APHY_OFF_3, 486 0xFF, CFG_PCIE_APHY_OFF_3_DEFAULT); 487 /*CDR DEC*/ 488 rtsx_pci_write_register(pcr, PWC_CDR, 0xFF, PWC_CDR_DEFAULT); 489 /*PWMPFM*/ 490 rtsx_pci_write_register(pcr, CFG_LP_FPWM_VALUE, 491 0xFF, CFG_LP_FPWM_VALUE_DEFAULT); 492 /*No Power Saving WA*/ 493 rtsx_pci_write_register(pcr, CFG_L1_0_CRC_MISC_RET_VALUE, 494 0xFF, CFG_L1_0_CRC_MISC_RET_VALUE_DEFAULT); 495 } 496 497 static void rts5260_init_from_cfg(struct rtsx_pcr *pcr) 498 { 499 struct rtsx_cr_option *option = &pcr->option; 500 u32 lval; 501 502 rtsx_pci_read_config_dword(pcr, PCR_ASPM_SETTING_5260, &lval); 503 504 if (lval & ASPM_L1_1_EN_MASK) 505 rtsx_set_dev_flag(pcr, ASPM_L1_1_EN); 506 507 if (lval & ASPM_L1_2_EN_MASK) 508 rtsx_set_dev_flag(pcr, ASPM_L1_2_EN); 509 510 if (lval & PM_L1_1_EN_MASK) 511 rtsx_set_dev_flag(pcr, PM_L1_1_EN); 512 513 if (lval & PM_L1_2_EN_MASK) 514 rtsx_set_dev_flag(pcr, PM_L1_2_EN); 515 516 rts5260_pwr_saving_setting(pcr); 517 518 if (option->ltr_en) { 519 u16 val; 520 521 pcie_capability_read_word(pcr->pci, PCI_EXP_DEVCTL2, &val); 522 if (val & PCI_EXP_DEVCTL2_LTR_EN) { 523 option->ltr_enabled = true; 524 option->ltr_active = true; 525 rtsx_set_ltr_latency(pcr, option->ltr_active_latency); 526 } else { 527 option->ltr_enabled = false; 528 } 529 } 530 531 if (rtsx_check_dev_flag(pcr, ASPM_L1_1_EN | ASPM_L1_2_EN 532 | PM_L1_1_EN | PM_L1_2_EN)) 533 option->force_clkreq_0 = false; 534 else 535 option->force_clkreq_0 = true; 536 } 537 538 static int rts5260_extra_init_hw(struct rtsx_pcr *pcr) 539 { 540 struct rtsx_cr_option *option = &pcr->option; 541 542 /* Set mcu_cnt to 7 to ensure data can be sampled properly */ 543 rtsx_pci_write_register(pcr, 0xFC03, 0x7F, 0x07); 544 rtsx_pci_write_register(pcr, SSC_DIV_N_0, 0xFF, 0x5D); 545 546 rts5260_init_from_cfg(pcr); 547 548 /* force no MDIO*/ 549 rtsx_pci_write_register(pcr, RTS5260_AUTOLOAD_CFG4, 550 0xFF, RTS5260_MIMO_DISABLE); 551 /*Modify SDVCC Tune Default Parameters!*/ 552 rtsx_pci_write_register(pcr, LDO_VCC_CFG0, 553 RTS5260_DVCC_TUNE_MASK, RTS5260_DVCC_33); 554 555 rtsx_pci_write_register(pcr, PCLK_CTL, PCLK_MODE_SEL, PCLK_MODE_SEL); 556 557 rts5260_init_hw(pcr); 558 559 /* 560 * If u_force_clkreq_0 is enabled, CLKREQ# PIN will be forced 561 * to drive low, and we forcibly request clock. 562 */ 563 if (option->force_clkreq_0) 564 rtsx_pci_write_register(pcr, PETXCFG, 565 FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_LOW); 566 else 567 rtsx_pci_write_register(pcr, PETXCFG, 568 FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_HIGH); 569 570 return 0; 571 } 572 573 static void rts5260_set_aspm(struct rtsx_pcr *pcr, bool enable) 574 { 575 struct rtsx_cr_option *option = &pcr->option; 576 u8 val = 0; 577 578 if (pcr->aspm_enabled == enable) 579 return; 580 581 if (option->dev_aspm_mode == DEV_ASPM_DYNAMIC) { 582 if (enable) 583 val = pcr->aspm_en; 584 rtsx_pci_update_cfg_byte(pcr, pcr->pcie_cap + PCI_EXP_LNKCTL, 585 ASPM_MASK_NEG, val); 586 } else if (option->dev_aspm_mode == DEV_ASPM_BACKDOOR) { 587 u8 mask = FORCE_ASPM_VAL_MASK | FORCE_ASPM_CTL0; 588 589 if (!enable) 590 val = FORCE_ASPM_CTL0; 591 rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val); 592 } 593 594 pcr->aspm_enabled = enable; 595 } 596 597 static void rts5260_set_l1off_cfg_sub_d0(struct rtsx_pcr *pcr, int active) 598 { 599 struct rtsx_cr_option *option = &pcr->option; 600 u32 interrupt = rtsx_pci_readl(pcr, RTSX_BIPR); 601 int card_exist = (interrupt & SD_EXIST) | (interrupt & MS_EXIST); 602 int aspm_L1_1, aspm_L1_2; 603 u8 val = 0; 604 605 aspm_L1_1 = rtsx_check_dev_flag(pcr, ASPM_L1_1_EN); 606 aspm_L1_2 = rtsx_check_dev_flag(pcr, ASPM_L1_2_EN); 607 608 if (active) { 609 /* run, latency: 60us */ 610 if (aspm_L1_1) 611 val = option->ltr_l1off_snooze_sspwrgate; 612 } else { 613 /* l1off, latency: 300us */ 614 if (aspm_L1_2) 615 val = option->ltr_l1off_sspwrgate; 616 } 617 618 if (aspm_L1_1 || aspm_L1_2) { 619 if (rtsx_check_dev_flag(pcr, 620 LTR_L1SS_PWR_GATE_CHECK_CARD_EN)) { 621 if (card_exist) 622 val &= ~L1OFF_MBIAS2_EN_5250; 623 else 624 val |= L1OFF_MBIAS2_EN_5250; 625 } 626 } 627 rtsx_set_l1off_sub(pcr, val); 628 } 629 630 static const struct pcr_ops rts5260_pcr_ops = { 631 .fetch_vendor_settings = rtsx_base_fetch_vendor_settings, 632 .turn_on_led = rts5260_turn_on_led, 633 .turn_off_led = rts5260_turn_off_led, 634 .extra_init_hw = rts5260_extra_init_hw, 635 .enable_auto_blink = rtsx_base_enable_auto_blink, 636 .disable_auto_blink = rtsx_base_disable_auto_blink, 637 .card_power_on = rts5260_card_power_on, 638 .card_power_off = rts5260_card_power_off, 639 .switch_output_voltage = rts5260_switch_output_voltage, 640 .force_power_down = rtsx_base_force_power_down, 641 .stop_cmd = rts5260_stop_cmd, 642 .set_aspm = rts5260_set_aspm, 643 .set_l1off_cfg_sub_d0 = rts5260_set_l1off_cfg_sub_d0, 644 .enable_ocp = rts5260_enable_ocp, 645 .disable_ocp = rts5260_disable_ocp, 646 .init_ocp = rts5260_init_ocp, 647 .process_ocp = rts5260_process_ocp, 648 .get_ocpstat = rts5260_get_ocpstat, 649 .clear_ocpstat = rts5260_clear_ocpstat, 650 }; 651 652 void rts5260_init_params(struct rtsx_pcr *pcr) 653 { 654 struct rtsx_cr_option *option = &pcr->option; 655 struct rtsx_hw_param *hw_param = &pcr->hw_param; 656 657 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104; 658 pcr->num_slots = 2; 659 660 pcr->flags = 0; 661 pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT; 662 pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B; 663 pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B; 664 pcr->aspm_en = ASPM_L1_EN; 665 pcr->tx_initial_phase = SET_CLOCK_PHASE(1, 29, 16); 666 pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5); 667 668 pcr->ic_version = rts5260_get_ic_version(pcr); 669 pcr->sd_pull_ctl_enable_tbl = rts5260_sd_pull_ctl_enable_tbl; 670 pcr->sd_pull_ctl_disable_tbl = rts5260_sd_pull_ctl_disable_tbl; 671 pcr->ms_pull_ctl_enable_tbl = rts5260_ms_pull_ctl_enable_tbl; 672 pcr->ms_pull_ctl_disable_tbl = rts5260_ms_pull_ctl_disable_tbl; 673 674 pcr->reg_pm_ctrl3 = RTS524A_PM_CTRL3; 675 676 pcr->ops = &rts5260_pcr_ops; 677 678 option->dev_flags = (LTR_L1SS_PWR_GATE_CHECK_CARD_EN 679 | LTR_L1SS_PWR_GATE_EN); 680 option->ltr_en = true; 681 682 /* init latency of active, idle, L1OFF to 60us, 300us, 3ms */ 683 option->ltr_active_latency = LTR_ACTIVE_LATENCY_DEF; 684 option->ltr_idle_latency = LTR_IDLE_LATENCY_DEF; 685 option->ltr_l1off_latency = LTR_L1OFF_LATENCY_DEF; 686 option->dev_aspm_mode = DEV_ASPM_DYNAMIC; 687 option->l1_snooze_delay = L1_SNOOZE_DELAY_DEF; 688 option->ltr_l1off_sspwrgate = LTR_L1OFF_SSPWRGATE_5250_DEF; 689 option->ltr_l1off_snooze_sspwrgate = 690 LTR_L1OFF_SNOOZE_SSPWRGATE_5250_DEF; 691 692 option->ocp_en = 1; 693 if (option->ocp_en) 694 hw_param->interrupt_en |= SD_OC_INT_EN; 695 hw_param->ocp_glitch = SD_OCP_GLITCH_100U | SDVIO_OCP_GLITCH_800U; 696 option->sd_400mA_ocp_thd = RTS5260_DVCC_OCP_THD_550; 697 option->sd_800mA_ocp_thd = RTS5260_DVCC_OCP_THD_970; 698 } 699