1659c9bc1SBen Hutchings /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface 2659c9bc1SBen Hutchings * 3659c9bc1SBen Hutchings * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. 4659c9bc1SBen Hutchings * 5659c9bc1SBen Hutchings * This program is free software; you can redistribute it and/or modify 6659c9bc1SBen Hutchings * it under the terms of the GNU General Public License as published by 7659c9bc1SBen Hutchings * the Free Software Foundation; either version 2 of the License, or (at 8659c9bc1SBen Hutchings * your option) any later version. 9659c9bc1SBen Hutchings * 10659c9bc1SBen Hutchings * Thanks to the following companies for their support: 11659c9bc1SBen Hutchings * 12659c9bc1SBen Hutchings * - JMicron (hardware and technical support) 13659c9bc1SBen Hutchings */ 14659c9bc1SBen Hutchings 155305ec6aSAdrian Hunter #include <linux/bitfield.h> 16a72016a4SAdrian Hunter #include <linux/string.h> 17659c9bc1SBen Hutchings #include <linux/delay.h> 18659c9bc1SBen Hutchings #include <linux/highmem.h> 19659c9bc1SBen Hutchings #include <linux/module.h> 20659c9bc1SBen Hutchings #include <linux/pci.h> 21659c9bc1SBen Hutchings #include <linux/dma-mapping.h> 22659c9bc1SBen Hutchings #include <linux/slab.h> 23659c9bc1SBen Hutchings #include <linux/device.h> 24659c9bc1SBen Hutchings #include <linux/mmc/host.h> 25659c9bc1SBen Hutchings #include <linux/mmc/mmc.h> 26659c9bc1SBen Hutchings #include <linux/scatterlist.h> 27659c9bc1SBen Hutchings #include <linux/io.h> 28659c9bc1SBen Hutchings #include <linux/gpio.h> 29659c9bc1SBen Hutchings #include <linux/pm_runtime.h> 30659c9bc1SBen Hutchings #include <linux/mmc/slot-gpio.h> 31659c9bc1SBen Hutchings #include <linux/mmc/sdhci-pci-data.h> 323f23df72SZach Brown #include <linux/acpi.h> 33659c9bc1SBen Hutchings 348ee82bdaSAdrian Hunter #include "cqhci.h" 358ee82bdaSAdrian Hunter 36659c9bc1SBen Hutchings #include "sdhci.h" 37659c9bc1SBen Hutchings #include "sdhci-pci.h" 38659c9bc1SBen Hutchings 39fee686b7SAdrian Hunter static void sdhci_pci_hw_reset(struct sdhci_host *host); 40fee686b7SAdrian Hunter 4130cf2803SAdrian Hunter #ifdef CONFIG_PM_SLEEP 4230cf2803SAdrian Hunter static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip) 4330cf2803SAdrian Hunter { 4430cf2803SAdrian Hunter mmc_pm_flag_t pm_flags = 0; 45d56ee1ffSAdrian Hunter bool cap_cd_wake = false; 4630cf2803SAdrian Hunter int i; 4730cf2803SAdrian Hunter 4830cf2803SAdrian Hunter for (i = 0; i < chip->num_slots; i++) { 4930cf2803SAdrian Hunter struct sdhci_pci_slot *slot = chip->slots[i]; 5030cf2803SAdrian Hunter 51d56ee1ffSAdrian Hunter if (slot) { 5230cf2803SAdrian Hunter pm_flags |= slot->host->mmc->pm_flags; 53d56ee1ffSAdrian Hunter if (slot->host->mmc->caps & MMC_CAP_CD_WAKE) 54d56ee1ffSAdrian Hunter cap_cd_wake = true; 55d56ee1ffSAdrian Hunter } 5630cf2803SAdrian Hunter } 5730cf2803SAdrian Hunter 58d56ee1ffSAdrian Hunter if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ)) 59d56ee1ffSAdrian Hunter return device_wakeup_enable(&chip->pdev->dev); 60d56ee1ffSAdrian Hunter else if (!cap_cd_wake) 61d56ee1ffSAdrian Hunter return device_wakeup_disable(&chip->pdev->dev); 62d56ee1ffSAdrian Hunter 63d56ee1ffSAdrian Hunter return 0; 6430cf2803SAdrian Hunter } 6530cf2803SAdrian Hunter 6630cf2803SAdrian Hunter static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip) 6730cf2803SAdrian Hunter { 685c3c6126SAdrian Hunter int i, ret; 6930cf2803SAdrian Hunter 7030cf2803SAdrian Hunter sdhci_pci_init_wakeup(chip); 7130cf2803SAdrian Hunter 725c3c6126SAdrian Hunter for (i = 0; i < chip->num_slots; i++) { 735c3c6126SAdrian Hunter struct sdhci_pci_slot *slot = chip->slots[i]; 745c3c6126SAdrian Hunter struct sdhci_host *host; 755c3c6126SAdrian Hunter 765c3c6126SAdrian Hunter if (!slot) 775c3c6126SAdrian Hunter continue; 785c3c6126SAdrian Hunter 795c3c6126SAdrian Hunter host = slot->host; 805c3c6126SAdrian Hunter 815c3c6126SAdrian Hunter if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3) 825c3c6126SAdrian Hunter mmc_retune_needed(host->mmc); 835c3c6126SAdrian Hunter 845c3c6126SAdrian Hunter ret = sdhci_suspend_host(host); 855c3c6126SAdrian Hunter if (ret) 865c3c6126SAdrian Hunter goto err_pci_suspend; 87d56ee1ffSAdrian Hunter 88d56ee1ffSAdrian Hunter if (device_may_wakeup(&chip->pdev->dev)) 89d56ee1ffSAdrian Hunter mmc_gpio_set_cd_wake(host->mmc, true); 905c3c6126SAdrian Hunter } 915c3c6126SAdrian Hunter 9230cf2803SAdrian Hunter return 0; 935c3c6126SAdrian Hunter 945c3c6126SAdrian Hunter err_pci_suspend: 955c3c6126SAdrian Hunter while (--i >= 0) 965c3c6126SAdrian Hunter sdhci_resume_host(chip->slots[i]->host); 975c3c6126SAdrian Hunter return ret; 9830cf2803SAdrian Hunter } 9930cf2803SAdrian Hunter 10030cf2803SAdrian Hunter int sdhci_pci_resume_host(struct sdhci_pci_chip *chip) 10130cf2803SAdrian Hunter { 10230cf2803SAdrian Hunter struct sdhci_pci_slot *slot; 10330cf2803SAdrian Hunter int i, ret; 10430cf2803SAdrian Hunter 10530cf2803SAdrian Hunter for (i = 0; i < chip->num_slots; i++) { 10630cf2803SAdrian Hunter slot = chip->slots[i]; 10730cf2803SAdrian Hunter if (!slot) 10830cf2803SAdrian Hunter continue; 10930cf2803SAdrian Hunter 11030cf2803SAdrian Hunter ret = sdhci_resume_host(slot->host); 11130cf2803SAdrian Hunter if (ret) 11230cf2803SAdrian Hunter return ret; 113d56ee1ffSAdrian Hunter 114d56ee1ffSAdrian Hunter mmc_gpio_set_cd_wake(slot->host->mmc, false); 11530cf2803SAdrian Hunter } 11630cf2803SAdrian Hunter 11730cf2803SAdrian Hunter return 0; 11830cf2803SAdrian Hunter } 1198ee82bdaSAdrian Hunter 1208ee82bdaSAdrian Hunter static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip) 1218ee82bdaSAdrian Hunter { 1228ee82bdaSAdrian Hunter int ret; 1238ee82bdaSAdrian Hunter 1248ee82bdaSAdrian Hunter ret = cqhci_suspend(chip->slots[0]->host->mmc); 1258ee82bdaSAdrian Hunter if (ret) 1268ee82bdaSAdrian Hunter return ret; 1278ee82bdaSAdrian Hunter 1288ee82bdaSAdrian Hunter return sdhci_pci_suspend_host(chip); 1298ee82bdaSAdrian Hunter } 1308ee82bdaSAdrian Hunter 1318ee82bdaSAdrian Hunter static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip) 1328ee82bdaSAdrian Hunter { 1338ee82bdaSAdrian Hunter int ret; 1348ee82bdaSAdrian Hunter 1358ee82bdaSAdrian Hunter ret = sdhci_pci_resume_host(chip); 1368ee82bdaSAdrian Hunter if (ret) 1378ee82bdaSAdrian Hunter return ret; 1388ee82bdaSAdrian Hunter 1398ee82bdaSAdrian Hunter return cqhci_resume(chip->slots[0]->host->mmc); 1408ee82bdaSAdrian Hunter } 14130cf2803SAdrian Hunter #endif 14230cf2803SAdrian Hunter 143966d696aSAdrian Hunter #ifdef CONFIG_PM 144966d696aSAdrian Hunter static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip) 145966d696aSAdrian Hunter { 146966d696aSAdrian Hunter struct sdhci_pci_slot *slot; 147966d696aSAdrian Hunter struct sdhci_host *host; 148966d696aSAdrian Hunter int i, ret; 149966d696aSAdrian Hunter 150966d696aSAdrian Hunter for (i = 0; i < chip->num_slots; i++) { 151966d696aSAdrian Hunter slot = chip->slots[i]; 152966d696aSAdrian Hunter if (!slot) 153966d696aSAdrian Hunter continue; 154966d696aSAdrian Hunter 155966d696aSAdrian Hunter host = slot->host; 156966d696aSAdrian Hunter 157966d696aSAdrian Hunter ret = sdhci_runtime_suspend_host(host); 158966d696aSAdrian Hunter if (ret) 159966d696aSAdrian Hunter goto err_pci_runtime_suspend; 160966d696aSAdrian Hunter 161966d696aSAdrian Hunter if (chip->rpm_retune && 162966d696aSAdrian Hunter host->tuning_mode != SDHCI_TUNING_MODE_3) 163966d696aSAdrian Hunter mmc_retune_needed(host->mmc); 164966d696aSAdrian Hunter } 165966d696aSAdrian Hunter 166966d696aSAdrian Hunter return 0; 167966d696aSAdrian Hunter 168966d696aSAdrian Hunter err_pci_runtime_suspend: 169966d696aSAdrian Hunter while (--i >= 0) 170966d696aSAdrian Hunter sdhci_runtime_resume_host(chip->slots[i]->host); 171966d696aSAdrian Hunter return ret; 172966d696aSAdrian Hunter } 173966d696aSAdrian Hunter 174966d696aSAdrian Hunter static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip) 175966d696aSAdrian Hunter { 176966d696aSAdrian Hunter struct sdhci_pci_slot *slot; 177966d696aSAdrian Hunter int i, ret; 178966d696aSAdrian Hunter 179966d696aSAdrian Hunter for (i = 0; i < chip->num_slots; i++) { 180966d696aSAdrian Hunter slot = chip->slots[i]; 181966d696aSAdrian Hunter if (!slot) 182966d696aSAdrian Hunter continue; 183966d696aSAdrian Hunter 184966d696aSAdrian Hunter ret = sdhci_runtime_resume_host(slot->host); 185966d696aSAdrian Hunter if (ret) 186966d696aSAdrian Hunter return ret; 187966d696aSAdrian Hunter } 188966d696aSAdrian Hunter 189966d696aSAdrian Hunter return 0; 190966d696aSAdrian Hunter } 1918ee82bdaSAdrian Hunter 1928ee82bdaSAdrian Hunter static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip) 1938ee82bdaSAdrian Hunter { 1948ee82bdaSAdrian Hunter int ret; 1958ee82bdaSAdrian Hunter 1968ee82bdaSAdrian Hunter ret = cqhci_suspend(chip->slots[0]->host->mmc); 1978ee82bdaSAdrian Hunter if (ret) 1988ee82bdaSAdrian Hunter return ret; 1998ee82bdaSAdrian Hunter 2008ee82bdaSAdrian Hunter return sdhci_pci_runtime_suspend_host(chip); 2018ee82bdaSAdrian Hunter } 2028ee82bdaSAdrian Hunter 2038ee82bdaSAdrian Hunter static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip) 2048ee82bdaSAdrian Hunter { 2058ee82bdaSAdrian Hunter int ret; 2068ee82bdaSAdrian Hunter 2078ee82bdaSAdrian Hunter ret = sdhci_pci_runtime_resume_host(chip); 2088ee82bdaSAdrian Hunter if (ret) 2098ee82bdaSAdrian Hunter return ret; 2108ee82bdaSAdrian Hunter 2118ee82bdaSAdrian Hunter return cqhci_resume(chip->slots[0]->host->mmc); 2128ee82bdaSAdrian Hunter } 213966d696aSAdrian Hunter #endif 214966d696aSAdrian Hunter 2158ee82bdaSAdrian Hunter static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask) 2168ee82bdaSAdrian Hunter { 2178ee82bdaSAdrian Hunter int cmd_error = 0; 2188ee82bdaSAdrian Hunter int data_error = 0; 2198ee82bdaSAdrian Hunter 2208ee82bdaSAdrian Hunter if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error)) 2218ee82bdaSAdrian Hunter return intmask; 2228ee82bdaSAdrian Hunter 2238ee82bdaSAdrian Hunter cqhci_irq(host->mmc, intmask, cmd_error, data_error); 2248ee82bdaSAdrian Hunter 2258ee82bdaSAdrian Hunter return 0; 2268ee82bdaSAdrian Hunter } 2278ee82bdaSAdrian Hunter 2288ee82bdaSAdrian Hunter static void sdhci_pci_dumpregs(struct mmc_host *mmc) 2298ee82bdaSAdrian Hunter { 2308ee82bdaSAdrian Hunter sdhci_dumpregs(mmc_priv(mmc)); 2318ee82bdaSAdrian Hunter } 2328ee82bdaSAdrian Hunter 233659c9bc1SBen Hutchings /*****************************************************************************\ 234659c9bc1SBen Hutchings * * 235659c9bc1SBen Hutchings * Hardware specific quirk handling * 236659c9bc1SBen Hutchings * * 237659c9bc1SBen Hutchings \*****************************************************************************/ 238659c9bc1SBen Hutchings 239659c9bc1SBen Hutchings static int ricoh_probe(struct sdhci_pci_chip *chip) 240659c9bc1SBen Hutchings { 241659c9bc1SBen Hutchings if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG || 242659c9bc1SBen Hutchings chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY) 243659c9bc1SBen Hutchings chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; 244659c9bc1SBen Hutchings return 0; 245659c9bc1SBen Hutchings } 246659c9bc1SBen Hutchings 247659c9bc1SBen Hutchings static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot) 248659c9bc1SBen Hutchings { 249659c9bc1SBen Hutchings slot->host->caps = 250659c9bc1SBen Hutchings ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT) 251659c9bc1SBen Hutchings & SDHCI_TIMEOUT_CLK_MASK) | 252659c9bc1SBen Hutchings 253659c9bc1SBen Hutchings ((0x21 << SDHCI_CLOCK_BASE_SHIFT) 254659c9bc1SBen Hutchings & SDHCI_CLOCK_BASE_MASK) | 255659c9bc1SBen Hutchings 256659c9bc1SBen Hutchings SDHCI_TIMEOUT_CLK_UNIT | 257659c9bc1SBen Hutchings SDHCI_CAN_VDD_330 | 258659c9bc1SBen Hutchings SDHCI_CAN_DO_HISPD | 259659c9bc1SBen Hutchings SDHCI_CAN_DO_SDMA; 260659c9bc1SBen Hutchings return 0; 261659c9bc1SBen Hutchings } 262659c9bc1SBen Hutchings 263b7813f0fSAdrian Hunter #ifdef CONFIG_PM_SLEEP 264659c9bc1SBen Hutchings static int ricoh_mmc_resume(struct sdhci_pci_chip *chip) 265659c9bc1SBen Hutchings { 266659c9bc1SBen Hutchings /* Apply a delay to allow controller to settle */ 267659c9bc1SBen Hutchings /* Otherwise it becomes confused if card state changed 268659c9bc1SBen Hutchings during suspend */ 269659c9bc1SBen Hutchings msleep(500); 27030cf2803SAdrian Hunter return sdhci_pci_resume_host(chip); 271659c9bc1SBen Hutchings } 272b7813f0fSAdrian Hunter #endif 273659c9bc1SBen Hutchings 274659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_ricoh = { 275659c9bc1SBen Hutchings .probe = ricoh_probe, 276659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | 277659c9bc1SBen Hutchings SDHCI_QUIRK_FORCE_DMA | 278659c9bc1SBen Hutchings SDHCI_QUIRK_CLOCK_BEFORE_RESET, 279659c9bc1SBen Hutchings }; 280659c9bc1SBen Hutchings 281659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_ricoh_mmc = { 282659c9bc1SBen Hutchings .probe_slot = ricoh_mmc_probe_slot, 283b7813f0fSAdrian Hunter #ifdef CONFIG_PM_SLEEP 284659c9bc1SBen Hutchings .resume = ricoh_mmc_resume, 285b7813f0fSAdrian Hunter #endif 286659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | 287659c9bc1SBen Hutchings SDHCI_QUIRK_CLOCK_BEFORE_RESET | 288659c9bc1SBen Hutchings SDHCI_QUIRK_NO_CARD_NO_RESET | 289659c9bc1SBen Hutchings SDHCI_QUIRK_MISSING_CAPS 290659c9bc1SBen Hutchings }; 291659c9bc1SBen Hutchings 292659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_ene_712 = { 293659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | 294659c9bc1SBen Hutchings SDHCI_QUIRK_BROKEN_DMA, 295659c9bc1SBen Hutchings }; 296659c9bc1SBen Hutchings 297659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_ene_714 = { 298659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | 299659c9bc1SBen Hutchings SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS | 300659c9bc1SBen Hutchings SDHCI_QUIRK_BROKEN_DMA, 301659c9bc1SBen Hutchings }; 302659c9bc1SBen Hutchings 303659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_cafe = { 304659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER | 305659c9bc1SBen Hutchings SDHCI_QUIRK_NO_BUSY_IRQ | 306659c9bc1SBen Hutchings SDHCI_QUIRK_BROKEN_CARD_DETECTION | 307659c9bc1SBen Hutchings SDHCI_QUIRK_BROKEN_TIMEOUT_VAL, 308659c9bc1SBen Hutchings }; 309659c9bc1SBen Hutchings 310659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_qrk = { 311659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_HISPD_BIT, 312659c9bc1SBen Hutchings }; 313659c9bc1SBen Hutchings 314659c9bc1SBen Hutchings static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot) 315659c9bc1SBen Hutchings { 316659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; 317659c9bc1SBen Hutchings return 0; 318659c9bc1SBen Hutchings } 319659c9bc1SBen Hutchings 320659c9bc1SBen Hutchings /* 321659c9bc1SBen Hutchings * ADMA operation is disabled for Moorestown platform due to 322659c9bc1SBen Hutchings * hardware bugs. 323659c9bc1SBen Hutchings */ 324659c9bc1SBen Hutchings static int mrst_hc_probe(struct sdhci_pci_chip *chip) 325659c9bc1SBen Hutchings { 326659c9bc1SBen Hutchings /* 327659c9bc1SBen Hutchings * slots number is fixed here for MRST as SDIO3/5 are never used and 328659c9bc1SBen Hutchings * have hardware bugs. 329659c9bc1SBen Hutchings */ 330659c9bc1SBen Hutchings chip->num_slots = 1; 331659c9bc1SBen Hutchings return 0; 332659c9bc1SBen Hutchings } 333659c9bc1SBen Hutchings 334659c9bc1SBen Hutchings static int pch_hc_probe_slot(struct sdhci_pci_slot *slot) 335659c9bc1SBen Hutchings { 336659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; 337659c9bc1SBen Hutchings return 0; 338659c9bc1SBen Hutchings } 339659c9bc1SBen Hutchings 340659c9bc1SBen Hutchings #ifdef CONFIG_PM 341659c9bc1SBen Hutchings 342659c9bc1SBen Hutchings static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id) 343659c9bc1SBen Hutchings { 344659c9bc1SBen Hutchings struct sdhci_pci_slot *slot = dev_id; 345659c9bc1SBen Hutchings struct sdhci_host *host = slot->host; 346659c9bc1SBen Hutchings 347659c9bc1SBen Hutchings mmc_detect_change(host->mmc, msecs_to_jiffies(200)); 348659c9bc1SBen Hutchings return IRQ_HANDLED; 349659c9bc1SBen Hutchings } 350659c9bc1SBen Hutchings 351659c9bc1SBen Hutchings static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) 352659c9bc1SBen Hutchings { 353659c9bc1SBen Hutchings int err, irq, gpio = slot->cd_gpio; 354659c9bc1SBen Hutchings 355659c9bc1SBen Hutchings slot->cd_gpio = -EINVAL; 356659c9bc1SBen Hutchings slot->cd_irq = -EINVAL; 357659c9bc1SBen Hutchings 358659c9bc1SBen Hutchings if (!gpio_is_valid(gpio)) 359659c9bc1SBen Hutchings return; 360659c9bc1SBen Hutchings 361c10bc372SAndy Shevchenko err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd"); 362659c9bc1SBen Hutchings if (err < 0) 363659c9bc1SBen Hutchings goto out; 364659c9bc1SBen Hutchings 365659c9bc1SBen Hutchings err = gpio_direction_input(gpio); 366659c9bc1SBen Hutchings if (err < 0) 367659c9bc1SBen Hutchings goto out_free; 368659c9bc1SBen Hutchings 369659c9bc1SBen Hutchings irq = gpio_to_irq(gpio); 370659c9bc1SBen Hutchings if (irq < 0) 371659c9bc1SBen Hutchings goto out_free; 372659c9bc1SBen Hutchings 373659c9bc1SBen Hutchings err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING | 374659c9bc1SBen Hutchings IRQF_TRIGGER_FALLING, "sd_cd", slot); 375659c9bc1SBen Hutchings if (err) 376659c9bc1SBen Hutchings goto out_free; 377659c9bc1SBen Hutchings 378659c9bc1SBen Hutchings slot->cd_gpio = gpio; 379659c9bc1SBen Hutchings slot->cd_irq = irq; 380659c9bc1SBen Hutchings 381659c9bc1SBen Hutchings return; 382659c9bc1SBen Hutchings 383659c9bc1SBen Hutchings out_free: 384c10bc372SAndy Shevchenko devm_gpio_free(&slot->chip->pdev->dev, gpio); 385659c9bc1SBen Hutchings out: 386659c9bc1SBen Hutchings dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n"); 387659c9bc1SBen Hutchings } 388659c9bc1SBen Hutchings 389659c9bc1SBen Hutchings static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot) 390659c9bc1SBen Hutchings { 391659c9bc1SBen Hutchings if (slot->cd_irq >= 0) 392659c9bc1SBen Hutchings free_irq(slot->cd_irq, slot); 393659c9bc1SBen Hutchings } 394659c9bc1SBen Hutchings 395659c9bc1SBen Hutchings #else 396659c9bc1SBen Hutchings 397659c9bc1SBen Hutchings static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) 398659c9bc1SBen Hutchings { 399659c9bc1SBen Hutchings } 400659c9bc1SBen Hutchings 401659c9bc1SBen Hutchings static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot) 402659c9bc1SBen Hutchings { 403659c9bc1SBen Hutchings } 404659c9bc1SBen Hutchings 405659c9bc1SBen Hutchings #endif 406659c9bc1SBen Hutchings 407659c9bc1SBen Hutchings static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot) 408659c9bc1SBen Hutchings { 409659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE; 410d2a47176SUlf Hansson slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC; 411659c9bc1SBen Hutchings return 0; 412659c9bc1SBen Hutchings } 413659c9bc1SBen Hutchings 414659c9bc1SBen Hutchings static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot) 415659c9bc1SBen Hutchings { 416659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE; 417659c9bc1SBen Hutchings return 0; 418659c9bc1SBen Hutchings } 419659c9bc1SBen Hutchings 420659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = { 421659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT, 422659c9bc1SBen Hutchings .probe_slot = mrst_hc_probe_slot, 423659c9bc1SBen Hutchings }; 424659c9bc1SBen Hutchings 425659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = { 426659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT, 427659c9bc1SBen Hutchings .probe = mrst_hc_probe, 428659c9bc1SBen Hutchings }; 429659c9bc1SBen Hutchings 430659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = { 431659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 432659c9bc1SBen Hutchings .allow_runtime_pm = true, 433659c9bc1SBen Hutchings .own_cd_for_runtime_pm = true, 434659c9bc1SBen Hutchings }; 435659c9bc1SBen Hutchings 436659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = { 437659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 438659c9bc1SBen Hutchings .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, 439659c9bc1SBen Hutchings .allow_runtime_pm = true, 440659c9bc1SBen Hutchings .probe_slot = mfd_sdio_probe_slot, 441659c9bc1SBen Hutchings }; 442659c9bc1SBen Hutchings 443659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = { 444659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 445659c9bc1SBen Hutchings .allow_runtime_pm = true, 446659c9bc1SBen Hutchings .probe_slot = mfd_emmc_probe_slot, 447659c9bc1SBen Hutchings }; 448659c9bc1SBen Hutchings 449659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = { 450659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_BROKEN_ADMA, 451659c9bc1SBen Hutchings .probe_slot = pch_hc_probe_slot, 452659c9bc1SBen Hutchings }; 453659c9bc1SBen Hutchings 454c959a6b0SAdrian Hunter enum { 455c959a6b0SAdrian Hunter INTEL_DSM_FNS = 0, 4566ae03368SAdrian Hunter INTEL_DSM_V18_SWITCH = 3, 457be17355aSAdrian Hunter INTEL_DSM_V33_SWITCH = 4, 45851ced59cSAdrian Hunter INTEL_DSM_DRV_STRENGTH = 9, 459c959a6b0SAdrian Hunter INTEL_DSM_D3_RETUNE = 10, 460c959a6b0SAdrian Hunter }; 461c959a6b0SAdrian Hunter 462c959a6b0SAdrian Hunter struct intel_host { 463c959a6b0SAdrian Hunter u32 dsm_fns; 46451ced59cSAdrian Hunter int drv_strength; 465c959a6b0SAdrian Hunter bool d3_retune; 4665305ec6aSAdrian Hunter bool rpm_retune_ok; 4675305ec6aSAdrian Hunter u32 glk_rx_ctrl1; 4685305ec6aSAdrian Hunter u32 glk_tun_val; 469c959a6b0SAdrian Hunter }; 470c959a6b0SAdrian Hunter 471c37f69ffSColin Ian King static const guid_t intel_dsm_guid = 47294116f81SAndy Shevchenko GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F, 47394116f81SAndy Shevchenko 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61); 474c959a6b0SAdrian Hunter 475c959a6b0SAdrian Hunter static int __intel_dsm(struct intel_host *intel_host, struct device *dev, 476c959a6b0SAdrian Hunter unsigned int fn, u32 *result) 477c959a6b0SAdrian Hunter { 478c959a6b0SAdrian Hunter union acpi_object *obj; 479c959a6b0SAdrian Hunter int err = 0; 480a72016a4SAdrian Hunter size_t len; 481c959a6b0SAdrian Hunter 48294116f81SAndy Shevchenko obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL); 483c959a6b0SAdrian Hunter if (!obj) 484c959a6b0SAdrian Hunter return -EOPNOTSUPP; 485c959a6b0SAdrian Hunter 486c959a6b0SAdrian Hunter if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) { 487c959a6b0SAdrian Hunter err = -EINVAL; 488c959a6b0SAdrian Hunter goto out; 489c959a6b0SAdrian Hunter } 490c959a6b0SAdrian Hunter 491a72016a4SAdrian Hunter len = min_t(size_t, obj->buffer.length, 4); 492a72016a4SAdrian Hunter 493a72016a4SAdrian Hunter *result = 0; 494a72016a4SAdrian Hunter memcpy(result, obj->buffer.pointer, len); 495c959a6b0SAdrian Hunter out: 496c959a6b0SAdrian Hunter ACPI_FREE(obj); 497c959a6b0SAdrian Hunter 498c959a6b0SAdrian Hunter return err; 499c959a6b0SAdrian Hunter } 500c959a6b0SAdrian Hunter 501c959a6b0SAdrian Hunter static int intel_dsm(struct intel_host *intel_host, struct device *dev, 502c959a6b0SAdrian Hunter unsigned int fn, u32 *result) 503c959a6b0SAdrian Hunter { 504c959a6b0SAdrian Hunter if (fn > 31 || !(intel_host->dsm_fns & (1 << fn))) 505c959a6b0SAdrian Hunter return -EOPNOTSUPP; 506c959a6b0SAdrian Hunter 507c959a6b0SAdrian Hunter return __intel_dsm(intel_host, dev, fn, result); 508c959a6b0SAdrian Hunter } 509c959a6b0SAdrian Hunter 510c959a6b0SAdrian Hunter static void intel_dsm_init(struct intel_host *intel_host, struct device *dev, 511c959a6b0SAdrian Hunter struct mmc_host *mmc) 512c959a6b0SAdrian Hunter { 513c959a6b0SAdrian Hunter int err; 514c959a6b0SAdrian Hunter u32 val; 515c959a6b0SAdrian Hunter 516eb701ce1SAdrian Hunter intel_host->d3_retune = true; 517eb701ce1SAdrian Hunter 518c959a6b0SAdrian Hunter err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns); 519c959a6b0SAdrian Hunter if (err) { 520c959a6b0SAdrian Hunter pr_debug("%s: DSM not supported, error %d\n", 521c959a6b0SAdrian Hunter mmc_hostname(mmc), err); 522c959a6b0SAdrian Hunter return; 523c959a6b0SAdrian Hunter } 524c959a6b0SAdrian Hunter 525c959a6b0SAdrian Hunter pr_debug("%s: DSM function mask %#x\n", 526c959a6b0SAdrian Hunter mmc_hostname(mmc), intel_host->dsm_fns); 527c959a6b0SAdrian Hunter 52851ced59cSAdrian Hunter err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val); 52951ced59cSAdrian Hunter intel_host->drv_strength = err ? 0 : val; 53051ced59cSAdrian Hunter 531c959a6b0SAdrian Hunter err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val); 532c959a6b0SAdrian Hunter intel_host->d3_retune = err ? true : !!val; 533c959a6b0SAdrian Hunter } 534c959a6b0SAdrian Hunter 535659c9bc1SBen Hutchings static void sdhci_pci_int_hw_reset(struct sdhci_host *host) 536659c9bc1SBen Hutchings { 537659c9bc1SBen Hutchings u8 reg; 538659c9bc1SBen Hutchings 539659c9bc1SBen Hutchings reg = sdhci_readb(host, SDHCI_POWER_CONTROL); 540659c9bc1SBen Hutchings reg |= 0x10; 541659c9bc1SBen Hutchings sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 542659c9bc1SBen Hutchings /* For eMMC, minimum is 1us but give it 9us for good measure */ 543659c9bc1SBen Hutchings udelay(9); 544659c9bc1SBen Hutchings reg &= ~0x10; 545659c9bc1SBen Hutchings sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 546659c9bc1SBen Hutchings /* For eMMC, minimum is 200us but give it 300us for good measure */ 547659c9bc1SBen Hutchings usleep_range(300, 1000); 548659c9bc1SBen Hutchings } 549659c9bc1SBen Hutchings 55051ced59cSAdrian Hunter static int intel_select_drive_strength(struct mmc_card *card, 55151ced59cSAdrian Hunter unsigned int max_dtr, int host_drv, 55251ced59cSAdrian Hunter int card_drv, int *drv_type) 553659c9bc1SBen Hutchings { 55451ced59cSAdrian Hunter struct sdhci_host *host = mmc_priv(card->host); 55551ced59cSAdrian Hunter struct sdhci_pci_slot *slot = sdhci_priv(host); 55651ced59cSAdrian Hunter struct intel_host *intel_host = sdhci_pci_priv(slot); 557659c9bc1SBen Hutchings 55851ced59cSAdrian Hunter return intel_host->drv_strength; 559659c9bc1SBen Hutchings } 560659c9bc1SBen Hutchings 561163cbe31SAdrian Hunter static int bxt_get_cd(struct mmc_host *mmc) 562163cbe31SAdrian Hunter { 563163cbe31SAdrian Hunter int gpio_cd = mmc_gpio_get_cd(mmc); 564163cbe31SAdrian Hunter struct sdhci_host *host = mmc_priv(mmc); 565163cbe31SAdrian Hunter unsigned long flags; 566163cbe31SAdrian Hunter int ret = 0; 567163cbe31SAdrian Hunter 568163cbe31SAdrian Hunter if (!gpio_cd) 569163cbe31SAdrian Hunter return 0; 570163cbe31SAdrian Hunter 571163cbe31SAdrian Hunter spin_lock_irqsave(&host->lock, flags); 572163cbe31SAdrian Hunter 573163cbe31SAdrian Hunter if (host->flags & SDHCI_DEVICE_DEAD) 574163cbe31SAdrian Hunter goto out; 575163cbe31SAdrian Hunter 576163cbe31SAdrian Hunter ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); 577163cbe31SAdrian Hunter out: 578163cbe31SAdrian Hunter spin_unlock_irqrestore(&host->lock, flags); 579163cbe31SAdrian Hunter 580163cbe31SAdrian Hunter return ret; 581163cbe31SAdrian Hunter } 582163cbe31SAdrian Hunter 58348d685a2SAdrian Hunter #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20 58448d685a2SAdrian Hunter #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100 58548d685a2SAdrian Hunter 58648d685a2SAdrian Hunter static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode, 58748d685a2SAdrian Hunter unsigned short vdd) 58848d685a2SAdrian Hunter { 58948d685a2SAdrian Hunter int cntr; 59048d685a2SAdrian Hunter u8 reg; 59148d685a2SAdrian Hunter 59248d685a2SAdrian Hunter sdhci_set_power(host, mode, vdd); 59348d685a2SAdrian Hunter 59448d685a2SAdrian Hunter if (mode == MMC_POWER_OFF) 59548d685a2SAdrian Hunter return; 59648d685a2SAdrian Hunter 59748d685a2SAdrian Hunter /* 59848d685a2SAdrian Hunter * Bus power might not enable after D3 -> D0 transition due to the 59948d685a2SAdrian Hunter * present state not yet having propagated. Retry for up to 2ms. 60048d685a2SAdrian Hunter */ 60148d685a2SAdrian Hunter for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) { 60248d685a2SAdrian Hunter reg = sdhci_readb(host, SDHCI_POWER_CONTROL); 60348d685a2SAdrian Hunter if (reg & SDHCI_POWER_ON) 60448d685a2SAdrian Hunter break; 60548d685a2SAdrian Hunter udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY); 60648d685a2SAdrian Hunter reg |= SDHCI_POWER_ON; 60748d685a2SAdrian Hunter sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 60848d685a2SAdrian Hunter } 60948d685a2SAdrian Hunter } 61048d685a2SAdrian Hunter 611bc55dcd8SAdrian Hunter #define INTEL_HS400_ES_REG 0x78 612bc55dcd8SAdrian Hunter #define INTEL_HS400_ES_BIT BIT(0) 613bc55dcd8SAdrian Hunter 614bc55dcd8SAdrian Hunter static void intel_hs400_enhanced_strobe(struct mmc_host *mmc, 615bc55dcd8SAdrian Hunter struct mmc_ios *ios) 616bc55dcd8SAdrian Hunter { 617bc55dcd8SAdrian Hunter struct sdhci_host *host = mmc_priv(mmc); 618bc55dcd8SAdrian Hunter u32 val; 619bc55dcd8SAdrian Hunter 620bc55dcd8SAdrian Hunter val = sdhci_readl(host, INTEL_HS400_ES_REG); 621bc55dcd8SAdrian Hunter if (ios->enhanced_strobe) 622bc55dcd8SAdrian Hunter val |= INTEL_HS400_ES_BIT; 623bc55dcd8SAdrian Hunter else 624bc55dcd8SAdrian Hunter val &= ~INTEL_HS400_ES_BIT; 625bc55dcd8SAdrian Hunter sdhci_writel(host, val, INTEL_HS400_ES_REG); 626bc55dcd8SAdrian Hunter } 627bc55dcd8SAdrian Hunter 628be17355aSAdrian Hunter static int intel_start_signal_voltage_switch(struct mmc_host *mmc, 629be17355aSAdrian Hunter struct mmc_ios *ios) 6306ae03368SAdrian Hunter { 631be17355aSAdrian Hunter struct device *dev = mmc_dev(mmc); 632be17355aSAdrian Hunter struct sdhci_host *host = mmc_priv(mmc); 6336ae03368SAdrian Hunter struct sdhci_pci_slot *slot = sdhci_priv(host); 6346ae03368SAdrian Hunter struct intel_host *intel_host = sdhci_pci_priv(slot); 635be17355aSAdrian Hunter unsigned int fn; 6366ae03368SAdrian Hunter u32 result = 0; 6376ae03368SAdrian Hunter int err; 6386ae03368SAdrian Hunter 639be17355aSAdrian Hunter err = sdhci_start_signal_voltage_switch(mmc, ios); 640be17355aSAdrian Hunter if (err) 641be17355aSAdrian Hunter return err; 642be17355aSAdrian Hunter 643be17355aSAdrian Hunter switch (ios->signal_voltage) { 644be17355aSAdrian Hunter case MMC_SIGNAL_VOLTAGE_330: 645be17355aSAdrian Hunter fn = INTEL_DSM_V33_SWITCH; 646be17355aSAdrian Hunter break; 647be17355aSAdrian Hunter case MMC_SIGNAL_VOLTAGE_180: 648be17355aSAdrian Hunter fn = INTEL_DSM_V18_SWITCH; 649be17355aSAdrian Hunter break; 650be17355aSAdrian Hunter default: 651be17355aSAdrian Hunter return 0; 652be17355aSAdrian Hunter } 653be17355aSAdrian Hunter 654be17355aSAdrian Hunter err = intel_dsm(intel_host, dev, fn, &result); 655be17355aSAdrian Hunter pr_debug("%s: %s DSM fn %u error %d result %u\n", 656be17355aSAdrian Hunter mmc_hostname(mmc), __func__, fn, err, result); 657be17355aSAdrian Hunter 658be17355aSAdrian Hunter return 0; 6596ae03368SAdrian Hunter } 6606ae03368SAdrian Hunter 66148d685a2SAdrian Hunter static const struct sdhci_ops sdhci_intel_byt_ops = { 66248d685a2SAdrian Hunter .set_clock = sdhci_set_clock, 66348d685a2SAdrian Hunter .set_power = sdhci_intel_set_power, 66448d685a2SAdrian Hunter .enable_dma = sdhci_pci_enable_dma, 665adc16398SMichał Mirosław .set_bus_width = sdhci_set_bus_width, 66648d685a2SAdrian Hunter .reset = sdhci_reset, 66748d685a2SAdrian Hunter .set_uhs_signaling = sdhci_set_uhs_signaling, 66848d685a2SAdrian Hunter .hw_reset = sdhci_pci_hw_reset, 66948d685a2SAdrian Hunter }; 67048d685a2SAdrian Hunter 6718ee82bdaSAdrian Hunter static const struct sdhci_ops sdhci_intel_glk_ops = { 6728ee82bdaSAdrian Hunter .set_clock = sdhci_set_clock, 6738ee82bdaSAdrian Hunter .set_power = sdhci_intel_set_power, 6748ee82bdaSAdrian Hunter .enable_dma = sdhci_pci_enable_dma, 6758ee82bdaSAdrian Hunter .set_bus_width = sdhci_set_bus_width, 6768ee82bdaSAdrian Hunter .reset = sdhci_reset, 6778ee82bdaSAdrian Hunter .set_uhs_signaling = sdhci_set_uhs_signaling, 6788ee82bdaSAdrian Hunter .hw_reset = sdhci_pci_hw_reset, 6798ee82bdaSAdrian Hunter .irq = sdhci_cqhci_irq, 6808ee82bdaSAdrian Hunter }; 6818ee82bdaSAdrian Hunter 682c959a6b0SAdrian Hunter static void byt_read_dsm(struct sdhci_pci_slot *slot) 683c959a6b0SAdrian Hunter { 684c959a6b0SAdrian Hunter struct intel_host *intel_host = sdhci_pci_priv(slot); 685c959a6b0SAdrian Hunter struct device *dev = &slot->chip->pdev->dev; 686c959a6b0SAdrian Hunter struct mmc_host *mmc = slot->host->mmc; 687c959a6b0SAdrian Hunter 688c959a6b0SAdrian Hunter intel_dsm_init(intel_host, dev, mmc); 689c959a6b0SAdrian Hunter slot->chip->rpm_retune = intel_host->d3_retune; 690c959a6b0SAdrian Hunter } 691c959a6b0SAdrian Hunter 692f8870ae6SAdrian Hunter static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode) 693f8870ae6SAdrian Hunter { 694f8870ae6SAdrian Hunter int err = sdhci_execute_tuning(mmc, opcode); 695f8870ae6SAdrian Hunter struct sdhci_host *host = mmc_priv(mmc); 696f8870ae6SAdrian Hunter 697f8870ae6SAdrian Hunter if (err) 698f8870ae6SAdrian Hunter return err; 699f8870ae6SAdrian Hunter 700f8870ae6SAdrian Hunter /* 701f8870ae6SAdrian Hunter * Tuning can leave the IP in an active state (Buffer Read Enable bit 702f8870ae6SAdrian Hunter * set) which prevents the entry to low power states (i.e. S0i3). Data 703f8870ae6SAdrian Hunter * reset will clear it. 704f8870ae6SAdrian Hunter */ 705f8870ae6SAdrian Hunter sdhci_reset(host, SDHCI_RESET_DATA); 706f8870ae6SAdrian Hunter 707f8870ae6SAdrian Hunter return 0; 708f8870ae6SAdrian Hunter } 709f8870ae6SAdrian Hunter 710f8870ae6SAdrian Hunter static void byt_probe_slot(struct sdhci_pci_slot *slot) 711f8870ae6SAdrian Hunter { 712f8870ae6SAdrian Hunter struct mmc_host_ops *ops = &slot->host->mmc_host_ops; 713809090e8SAdrian Hunter struct device *dev = &slot->chip->pdev->dev; 714809090e8SAdrian Hunter struct mmc_host *mmc = slot->host->mmc; 715f8870ae6SAdrian Hunter 716f8870ae6SAdrian Hunter byt_read_dsm(slot); 717f8870ae6SAdrian Hunter 718f8870ae6SAdrian Hunter ops->execute_tuning = intel_execute_tuning; 719be17355aSAdrian Hunter ops->start_signal_voltage_switch = intel_start_signal_voltage_switch; 720809090e8SAdrian Hunter 721809090e8SAdrian Hunter device_property_read_u32(dev, "max-frequency", &mmc->f_max); 722f8870ae6SAdrian Hunter } 723f8870ae6SAdrian Hunter 724659c9bc1SBen Hutchings static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) 725659c9bc1SBen Hutchings { 726f8870ae6SAdrian Hunter byt_probe_slot(slot); 727659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | 728659c9bc1SBen Hutchings MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR | 72932828857SAdrian Hunter MMC_CAP_CMD_DURING_TFR | 730659c9bc1SBen Hutchings MMC_CAP_WAIT_WHILE_BUSY; 731659c9bc1SBen Hutchings slot->hw_reset = sdhci_pci_int_hw_reset; 732659c9bc1SBen Hutchings if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC) 733659c9bc1SBen Hutchings slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ 73451ced59cSAdrian Hunter slot->host->mmc_host_ops.select_drive_strength = 73551ced59cSAdrian Hunter intel_select_drive_strength; 736659c9bc1SBen Hutchings return 0; 737659c9bc1SBen Hutchings } 738659c9bc1SBen Hutchings 739bc55dcd8SAdrian Hunter static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot) 740bc55dcd8SAdrian Hunter { 741bc55dcd8SAdrian Hunter int ret = byt_emmc_probe_slot(slot); 742bc55dcd8SAdrian Hunter 7438ee82bdaSAdrian Hunter slot->host->mmc->caps2 |= MMC_CAP2_CQE; 7448ee82bdaSAdrian Hunter 745bc55dcd8SAdrian Hunter if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) { 746bc55dcd8SAdrian Hunter slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES, 747bc55dcd8SAdrian Hunter slot->host->mmc_host_ops.hs400_enhanced_strobe = 748bc55dcd8SAdrian Hunter intel_hs400_enhanced_strobe; 7498ee82bdaSAdrian Hunter slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD; 750bc55dcd8SAdrian Hunter } 751bc55dcd8SAdrian Hunter 752bc55dcd8SAdrian Hunter return ret; 753bc55dcd8SAdrian Hunter } 754bc55dcd8SAdrian Hunter 7558ee82bdaSAdrian Hunter static const struct cqhci_host_ops glk_cqhci_ops = { 7567b7d57fdSAdrian Hunter .enable = sdhci_cqe_enable, 7578ee82bdaSAdrian Hunter .disable = sdhci_cqe_disable, 7588ee82bdaSAdrian Hunter .dumpregs = sdhci_pci_dumpregs, 7598ee82bdaSAdrian Hunter }; 7608ee82bdaSAdrian Hunter 7618ee82bdaSAdrian Hunter static int glk_emmc_add_host(struct sdhci_pci_slot *slot) 7628ee82bdaSAdrian Hunter { 7638ee82bdaSAdrian Hunter struct device *dev = &slot->chip->pdev->dev; 7648ee82bdaSAdrian Hunter struct sdhci_host *host = slot->host; 7658ee82bdaSAdrian Hunter struct cqhci_host *cq_host; 7668ee82bdaSAdrian Hunter bool dma64; 7678ee82bdaSAdrian Hunter int ret; 7688ee82bdaSAdrian Hunter 7698ee82bdaSAdrian Hunter ret = sdhci_setup_host(host); 7708ee82bdaSAdrian Hunter if (ret) 7718ee82bdaSAdrian Hunter return ret; 7728ee82bdaSAdrian Hunter 7738ee82bdaSAdrian Hunter cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL); 7748ee82bdaSAdrian Hunter if (!cq_host) { 7758ee82bdaSAdrian Hunter ret = -ENOMEM; 7768ee82bdaSAdrian Hunter goto cleanup; 7778ee82bdaSAdrian Hunter } 7788ee82bdaSAdrian Hunter 7798ee82bdaSAdrian Hunter cq_host->mmio = host->ioaddr + 0x200; 7808ee82bdaSAdrian Hunter cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ; 7818ee82bdaSAdrian Hunter cq_host->ops = &glk_cqhci_ops; 7828ee82bdaSAdrian Hunter 7838ee82bdaSAdrian Hunter dma64 = host->flags & SDHCI_USE_64_BIT_DMA; 7848ee82bdaSAdrian Hunter if (dma64) 7858ee82bdaSAdrian Hunter cq_host->caps |= CQHCI_TASK_DESC_SZ_128; 7868ee82bdaSAdrian Hunter 7878ee82bdaSAdrian Hunter ret = cqhci_init(cq_host, host->mmc, dma64); 7888ee82bdaSAdrian Hunter if (ret) 7898ee82bdaSAdrian Hunter goto cleanup; 7908ee82bdaSAdrian Hunter 7918ee82bdaSAdrian Hunter ret = __sdhci_add_host(host); 7928ee82bdaSAdrian Hunter if (ret) 7938ee82bdaSAdrian Hunter goto cleanup; 7948ee82bdaSAdrian Hunter 7958ee82bdaSAdrian Hunter return 0; 7968ee82bdaSAdrian Hunter 7978ee82bdaSAdrian Hunter cleanup: 7988ee82bdaSAdrian Hunter sdhci_cleanup_host(host); 7998ee82bdaSAdrian Hunter return ret; 8008ee82bdaSAdrian Hunter } 8018ee82bdaSAdrian Hunter 8025305ec6aSAdrian Hunter #ifdef CONFIG_PM 8035305ec6aSAdrian Hunter #define GLK_RX_CTRL1 0x834 8045305ec6aSAdrian Hunter #define GLK_TUN_VAL 0x840 8055305ec6aSAdrian Hunter #define GLK_PATH_PLL GENMASK(13, 8) 8065305ec6aSAdrian Hunter #define GLK_DLY GENMASK(6, 0) 8075305ec6aSAdrian Hunter /* Workaround firmware failing to restore the tuning value */ 8085305ec6aSAdrian Hunter static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp) 8095305ec6aSAdrian Hunter { 8105305ec6aSAdrian Hunter struct sdhci_pci_slot *slot = chip->slots[0]; 8115305ec6aSAdrian Hunter struct intel_host *intel_host = sdhci_pci_priv(slot); 8125305ec6aSAdrian Hunter struct sdhci_host *host = slot->host; 8135305ec6aSAdrian Hunter u32 glk_rx_ctrl1; 8145305ec6aSAdrian Hunter u32 glk_tun_val; 8155305ec6aSAdrian Hunter u32 dly; 8165305ec6aSAdrian Hunter 8175305ec6aSAdrian Hunter if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc)) 8185305ec6aSAdrian Hunter return; 8195305ec6aSAdrian Hunter 8205305ec6aSAdrian Hunter glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1); 8215305ec6aSAdrian Hunter glk_tun_val = sdhci_readl(host, GLK_TUN_VAL); 8225305ec6aSAdrian Hunter 8235305ec6aSAdrian Hunter if (susp) { 8245305ec6aSAdrian Hunter intel_host->glk_rx_ctrl1 = glk_rx_ctrl1; 8255305ec6aSAdrian Hunter intel_host->glk_tun_val = glk_tun_val; 8265305ec6aSAdrian Hunter return; 8275305ec6aSAdrian Hunter } 8285305ec6aSAdrian Hunter 8295305ec6aSAdrian Hunter if (!intel_host->glk_tun_val) 8305305ec6aSAdrian Hunter return; 8315305ec6aSAdrian Hunter 8325305ec6aSAdrian Hunter if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) { 8335305ec6aSAdrian Hunter intel_host->rpm_retune_ok = true; 8345305ec6aSAdrian Hunter return; 8355305ec6aSAdrian Hunter } 8365305ec6aSAdrian Hunter 8375305ec6aSAdrian Hunter dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) + 8385305ec6aSAdrian Hunter (intel_host->glk_tun_val << 1)); 8395305ec6aSAdrian Hunter if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1)) 8405305ec6aSAdrian Hunter return; 8415305ec6aSAdrian Hunter 8425305ec6aSAdrian Hunter glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly; 8435305ec6aSAdrian Hunter sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1); 8445305ec6aSAdrian Hunter 8455305ec6aSAdrian Hunter intel_host->rpm_retune_ok = true; 8465305ec6aSAdrian Hunter chip->rpm_retune = true; 8475305ec6aSAdrian Hunter mmc_retune_needed(host->mmc); 8485305ec6aSAdrian Hunter pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc)); 8495305ec6aSAdrian Hunter } 8505305ec6aSAdrian Hunter 8515305ec6aSAdrian Hunter static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp) 8525305ec6aSAdrian Hunter { 8535305ec6aSAdrian Hunter if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC && 8545305ec6aSAdrian Hunter !chip->rpm_retune) 8555305ec6aSAdrian Hunter glk_rpm_retune_wa(chip, susp); 8565305ec6aSAdrian Hunter } 8575305ec6aSAdrian Hunter 8585305ec6aSAdrian Hunter static int glk_runtime_suspend(struct sdhci_pci_chip *chip) 8595305ec6aSAdrian Hunter { 8605305ec6aSAdrian Hunter glk_rpm_retune_chk(chip, true); 8615305ec6aSAdrian Hunter 8625305ec6aSAdrian Hunter return sdhci_cqhci_runtime_suspend(chip); 8635305ec6aSAdrian Hunter } 8645305ec6aSAdrian Hunter 8655305ec6aSAdrian Hunter static int glk_runtime_resume(struct sdhci_pci_chip *chip) 8665305ec6aSAdrian Hunter { 8675305ec6aSAdrian Hunter glk_rpm_retune_chk(chip, false); 8685305ec6aSAdrian Hunter 8695305ec6aSAdrian Hunter return sdhci_cqhci_runtime_resume(chip); 8705305ec6aSAdrian Hunter } 8715305ec6aSAdrian Hunter #endif 8725305ec6aSAdrian Hunter 8733f23df72SZach Brown #ifdef CONFIG_ACPI 8743f23df72SZach Brown static int ni_set_max_freq(struct sdhci_pci_slot *slot) 8753f23df72SZach Brown { 8763f23df72SZach Brown acpi_status status; 8773f23df72SZach Brown unsigned long long max_freq; 8783f23df72SZach Brown 8793f23df72SZach Brown status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev), 8803f23df72SZach Brown "MXFQ", NULL, &max_freq); 8813f23df72SZach Brown if (ACPI_FAILURE(status)) { 8823f23df72SZach Brown dev_err(&slot->chip->pdev->dev, 8833f23df72SZach Brown "MXFQ not found in acpi table\n"); 8843f23df72SZach Brown return -EINVAL; 8853f23df72SZach Brown } 8863f23df72SZach Brown 8873f23df72SZach Brown slot->host->mmc->f_max = max_freq * 1000000; 8883f23df72SZach Brown 8893f23df72SZach Brown return 0; 8903f23df72SZach Brown } 8913f23df72SZach Brown #else 8923f23df72SZach Brown static inline int ni_set_max_freq(struct sdhci_pci_slot *slot) 8933f23df72SZach Brown { 8943f23df72SZach Brown return 0; 8953f23df72SZach Brown } 8963f23df72SZach Brown #endif 8973f23df72SZach Brown 89842b06496SZach Brown static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot) 89942b06496SZach Brown { 9003f23df72SZach Brown int err; 9013f23df72SZach Brown 902f8870ae6SAdrian Hunter byt_probe_slot(slot); 903c959a6b0SAdrian Hunter 9043f23df72SZach Brown err = ni_set_max_freq(slot); 9053f23df72SZach Brown if (err) 9063f23df72SZach Brown return err; 9073f23df72SZach Brown 90842b06496SZach Brown slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE | 90942b06496SZach Brown MMC_CAP_WAIT_WHILE_BUSY; 91042b06496SZach Brown return 0; 91142b06496SZach Brown } 91242b06496SZach Brown 913659c9bc1SBen Hutchings static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot) 914659c9bc1SBen Hutchings { 915f8870ae6SAdrian Hunter byt_probe_slot(slot); 916659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE | 917659c9bc1SBen Hutchings MMC_CAP_WAIT_WHILE_BUSY; 918659c9bc1SBen Hutchings return 0; 919659c9bc1SBen Hutchings } 920659c9bc1SBen Hutchings 921659c9bc1SBen Hutchings static int byt_sd_probe_slot(struct sdhci_pci_slot *slot) 922659c9bc1SBen Hutchings { 923f8870ae6SAdrian Hunter byt_probe_slot(slot); 924c2c49a2eSAzhar Shaikh slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | 9256cf4156cSAdrian Hunter MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE; 926659c9bc1SBen Hutchings slot->cd_idx = 0; 927659c9bc1SBen Hutchings slot->cd_override_level = true; 928163cbe31SAdrian Hunter if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD || 92901d6b2a4SAdrian Hunter slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD || 9302d1956d0SAdrian Hunter slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD || 931c2c49a2eSAzhar Shaikh slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD) 932163cbe31SAdrian Hunter slot->host->mmc_host_ops.get_cd = bxt_get_cd; 933163cbe31SAdrian Hunter 934bb26b841SKyle Roeschley if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI && 935bb26b841SKyle Roeschley slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3) 936bb26b841SKyle Roeschley slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V; 937bb26b841SKyle Roeschley 938659c9bc1SBen Hutchings return 0; 939659c9bc1SBen Hutchings } 940659c9bc1SBen Hutchings 941659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { 942659c9bc1SBen Hutchings .allow_runtime_pm = true, 943659c9bc1SBen Hutchings .probe_slot = byt_emmc_probe_slot, 944aeae6ad3SAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 945aeae6ad3SAdrian Hunter SDHCI_QUIRK_NO_LED, 946659c9bc1SBen Hutchings .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 947659c9bc1SBen Hutchings SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 | 948659c9bc1SBen Hutchings SDHCI_QUIRK2_STOP_WITH_TC, 949fee686b7SAdrian Hunter .ops = &sdhci_intel_byt_ops, 950c959a6b0SAdrian Hunter .priv_size = sizeof(struct intel_host), 951659c9bc1SBen Hutchings }; 952659c9bc1SBen Hutchings 953bc55dcd8SAdrian Hunter static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = { 954bc55dcd8SAdrian Hunter .allow_runtime_pm = true, 955bc55dcd8SAdrian Hunter .probe_slot = glk_emmc_probe_slot, 9568ee82bdaSAdrian Hunter .add_host = glk_emmc_add_host, 9578ee82bdaSAdrian Hunter #ifdef CONFIG_PM_SLEEP 9588ee82bdaSAdrian Hunter .suspend = sdhci_cqhci_suspend, 9598ee82bdaSAdrian Hunter .resume = sdhci_cqhci_resume, 9608ee82bdaSAdrian Hunter #endif 9618ee82bdaSAdrian Hunter #ifdef CONFIG_PM 9625305ec6aSAdrian Hunter .runtime_suspend = glk_runtime_suspend, 9635305ec6aSAdrian Hunter .runtime_resume = glk_runtime_resume, 9648ee82bdaSAdrian Hunter #endif 965aeae6ad3SAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 966aeae6ad3SAdrian Hunter SDHCI_QUIRK_NO_LED, 967bc55dcd8SAdrian Hunter .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 968bc55dcd8SAdrian Hunter SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 | 969bc55dcd8SAdrian Hunter SDHCI_QUIRK2_STOP_WITH_TC, 9708ee82bdaSAdrian Hunter .ops = &sdhci_intel_glk_ops, 971bc55dcd8SAdrian Hunter .priv_size = sizeof(struct intel_host), 972bc55dcd8SAdrian Hunter }; 973bc55dcd8SAdrian Hunter 97442b06496SZach Brown static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = { 975aeae6ad3SAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 976aeae6ad3SAdrian Hunter SDHCI_QUIRK_NO_LED, 97742b06496SZach Brown .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON | 97842b06496SZach Brown SDHCI_QUIRK2_PRESET_VALUE_BROKEN, 97942b06496SZach Brown .allow_runtime_pm = true, 98042b06496SZach Brown .probe_slot = ni_byt_sdio_probe_slot, 98142b06496SZach Brown .ops = &sdhci_intel_byt_ops, 982c959a6b0SAdrian Hunter .priv_size = sizeof(struct intel_host), 98342b06496SZach Brown }; 98442b06496SZach Brown 985659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = { 986aeae6ad3SAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 987aeae6ad3SAdrian Hunter SDHCI_QUIRK_NO_LED, 988659c9bc1SBen Hutchings .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON | 989659c9bc1SBen Hutchings SDHCI_QUIRK2_PRESET_VALUE_BROKEN, 990659c9bc1SBen Hutchings .allow_runtime_pm = true, 991659c9bc1SBen Hutchings .probe_slot = byt_sdio_probe_slot, 992fee686b7SAdrian Hunter .ops = &sdhci_intel_byt_ops, 993c959a6b0SAdrian Hunter .priv_size = sizeof(struct intel_host), 994659c9bc1SBen Hutchings }; 995659c9bc1SBen Hutchings 996659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_intel_byt_sd = { 997aeae6ad3SAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 998aeae6ad3SAdrian Hunter SDHCI_QUIRK_NO_LED, 999659c9bc1SBen Hutchings .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON | 1000659c9bc1SBen Hutchings SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 1001659c9bc1SBen Hutchings SDHCI_QUIRK2_STOP_WITH_TC, 1002659c9bc1SBen Hutchings .allow_runtime_pm = true, 1003659c9bc1SBen Hutchings .own_cd_for_runtime_pm = true, 1004659c9bc1SBen Hutchings .probe_slot = byt_sd_probe_slot, 1005fee686b7SAdrian Hunter .ops = &sdhci_intel_byt_ops, 1006c959a6b0SAdrian Hunter .priv_size = sizeof(struct intel_host), 1007659c9bc1SBen Hutchings }; 1008659c9bc1SBen Hutchings 1009659c9bc1SBen Hutchings /* Define Host controllers for Intel Merrifield platform */ 10101f64cec2SAndy Shevchenko #define INTEL_MRFLD_EMMC_0 0 10111f64cec2SAndy Shevchenko #define INTEL_MRFLD_EMMC_1 1 10124674b6c8SAndy Shevchenko #define INTEL_MRFLD_SD 2 1013d5565577SAndy Shevchenko #define INTEL_MRFLD_SDIO 3 1014659c9bc1SBen Hutchings 10150e39220eSAndy Shevchenko #ifdef CONFIG_ACPI 10160e39220eSAndy Shevchenko static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) 10170e39220eSAndy Shevchenko { 10180e39220eSAndy Shevchenko struct acpi_device *device, *child; 10190e39220eSAndy Shevchenko 10200e39220eSAndy Shevchenko device = ACPI_COMPANION(&slot->chip->pdev->dev); 10210e39220eSAndy Shevchenko if (!device) 10220e39220eSAndy Shevchenko return; 10230e39220eSAndy Shevchenko 10240e39220eSAndy Shevchenko acpi_device_fix_up_power(device); 10250e39220eSAndy Shevchenko list_for_each_entry(child, &device->children, node) 10260e39220eSAndy Shevchenko if (child->status.present && child->status.enabled) 10270e39220eSAndy Shevchenko acpi_device_fix_up_power(child); 10280e39220eSAndy Shevchenko } 10290e39220eSAndy Shevchenko #else 10300e39220eSAndy Shevchenko static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {} 10310e39220eSAndy Shevchenko #endif 10320e39220eSAndy Shevchenko 10331f64cec2SAndy Shevchenko static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot) 1034659c9bc1SBen Hutchings { 10352e57bbe2SAndy Shevchenko unsigned int func = PCI_FUNC(slot->chip->pdev->devfn); 10362e57bbe2SAndy Shevchenko 10372e57bbe2SAndy Shevchenko switch (func) { 10382e57bbe2SAndy Shevchenko case INTEL_MRFLD_EMMC_0: 10392e57bbe2SAndy Shevchenko case INTEL_MRFLD_EMMC_1: 10402e57bbe2SAndy Shevchenko slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE | 10412e57bbe2SAndy Shevchenko MMC_CAP_8_BIT_DATA | 10422e57bbe2SAndy Shevchenko MMC_CAP_1_8V_DDR; 10432e57bbe2SAndy Shevchenko break; 10444674b6c8SAndy Shevchenko case INTEL_MRFLD_SD: 10454674b6c8SAndy Shevchenko slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; 10464674b6c8SAndy Shevchenko break; 1047d5565577SAndy Shevchenko case INTEL_MRFLD_SDIO: 10482a609abeSAndy Shevchenko /* Advertise 2.0v for compatibility with the SDIO card's OCR */ 10492a609abeSAndy Shevchenko slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195; 1050d5565577SAndy Shevchenko slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE | 1051d5565577SAndy Shevchenko MMC_CAP_POWER_OFF_CARD; 1052d5565577SAndy Shevchenko break; 10532e57bbe2SAndy Shevchenko default: 1054659c9bc1SBen Hutchings return -ENODEV; 10552e57bbe2SAndy Shevchenko } 10560e39220eSAndy Shevchenko 10570e39220eSAndy Shevchenko intel_mrfld_mmc_fix_up_power_slot(slot); 1058659c9bc1SBen Hutchings return 0; 1059659c9bc1SBen Hutchings } 1060659c9bc1SBen Hutchings 10611f64cec2SAndy Shevchenko static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = { 1062659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 1063659c9bc1SBen Hutchings .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 | 1064659c9bc1SBen Hutchings SDHCI_QUIRK2_PRESET_VALUE_BROKEN, 1065659c9bc1SBen Hutchings .allow_runtime_pm = true, 10661f64cec2SAndy Shevchenko .probe_slot = intel_mrfld_mmc_probe_slot, 1067659c9bc1SBen Hutchings }; 1068659c9bc1SBen Hutchings 1069659c9bc1SBen Hutchings static int jmicron_pmos(struct sdhci_pci_chip *chip, int on) 1070659c9bc1SBen Hutchings { 1071659c9bc1SBen Hutchings u8 scratch; 1072659c9bc1SBen Hutchings int ret; 1073659c9bc1SBen Hutchings 1074659c9bc1SBen Hutchings ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch); 1075659c9bc1SBen Hutchings if (ret) 1076659c9bc1SBen Hutchings return ret; 1077659c9bc1SBen Hutchings 1078659c9bc1SBen Hutchings /* 1079659c9bc1SBen Hutchings * Turn PMOS on [bit 0], set over current detection to 2.4 V 1080659c9bc1SBen Hutchings * [bit 1:2] and enable over current debouncing [bit 6]. 1081659c9bc1SBen Hutchings */ 1082659c9bc1SBen Hutchings if (on) 1083659c9bc1SBen Hutchings scratch |= 0x47; 1084659c9bc1SBen Hutchings else 1085659c9bc1SBen Hutchings scratch &= ~0x47; 1086659c9bc1SBen Hutchings 10877582041fSkbuild test robot return pci_write_config_byte(chip->pdev, 0xAE, scratch); 1088659c9bc1SBen Hutchings } 1089659c9bc1SBen Hutchings 1090659c9bc1SBen Hutchings static int jmicron_probe(struct sdhci_pci_chip *chip) 1091659c9bc1SBen Hutchings { 1092659c9bc1SBen Hutchings int ret; 1093659c9bc1SBen Hutchings u16 mmcdev = 0; 1094659c9bc1SBen Hutchings 1095659c9bc1SBen Hutchings if (chip->pdev->revision == 0) { 1096659c9bc1SBen Hutchings chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR | 1097659c9bc1SBen Hutchings SDHCI_QUIRK_32BIT_DMA_SIZE | 1098659c9bc1SBen Hutchings SDHCI_QUIRK_32BIT_ADMA_SIZE | 1099659c9bc1SBen Hutchings SDHCI_QUIRK_RESET_AFTER_REQUEST | 1100659c9bc1SBen Hutchings SDHCI_QUIRK_BROKEN_SMALL_PIO; 1101659c9bc1SBen Hutchings } 1102659c9bc1SBen Hutchings 1103659c9bc1SBen Hutchings /* 1104659c9bc1SBen Hutchings * JMicron chips can have two interfaces to the same hardware 1105659c9bc1SBen Hutchings * in order to work around limitations in Microsoft's driver. 1106659c9bc1SBen Hutchings * We need to make sure we only bind to one of them. 1107659c9bc1SBen Hutchings * 1108659c9bc1SBen Hutchings * This code assumes two things: 1109659c9bc1SBen Hutchings * 1110659c9bc1SBen Hutchings * 1. The PCI code adds subfunctions in order. 1111659c9bc1SBen Hutchings * 1112659c9bc1SBen Hutchings * 2. The MMC interface has a lower subfunction number 1113659c9bc1SBen Hutchings * than the SD interface. 1114659c9bc1SBen Hutchings */ 1115659c9bc1SBen Hutchings if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) 1116659c9bc1SBen Hutchings mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC; 1117659c9bc1SBen Hutchings else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD) 1118659c9bc1SBen Hutchings mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD; 1119659c9bc1SBen Hutchings 1120659c9bc1SBen Hutchings if (mmcdev) { 1121659c9bc1SBen Hutchings struct pci_dev *sd_dev; 1122659c9bc1SBen Hutchings 1123659c9bc1SBen Hutchings sd_dev = NULL; 1124659c9bc1SBen Hutchings while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON, 1125659c9bc1SBen Hutchings mmcdev, sd_dev)) != NULL) { 1126659c9bc1SBen Hutchings if ((PCI_SLOT(chip->pdev->devfn) == 1127659c9bc1SBen Hutchings PCI_SLOT(sd_dev->devfn)) && 1128659c9bc1SBen Hutchings (chip->pdev->bus == sd_dev->bus)) 1129659c9bc1SBen Hutchings break; 1130659c9bc1SBen Hutchings } 1131659c9bc1SBen Hutchings 1132659c9bc1SBen Hutchings if (sd_dev) { 1133659c9bc1SBen Hutchings pci_dev_put(sd_dev); 1134659c9bc1SBen Hutchings dev_info(&chip->pdev->dev, "Refusing to bind to " 1135659c9bc1SBen Hutchings "secondary interface.\n"); 1136659c9bc1SBen Hutchings return -ENODEV; 1137659c9bc1SBen Hutchings } 1138659c9bc1SBen Hutchings } 1139659c9bc1SBen Hutchings 1140659c9bc1SBen Hutchings /* 1141659c9bc1SBen Hutchings * JMicron chips need a bit of a nudge to enable the power 1142659c9bc1SBen Hutchings * output pins. 1143659c9bc1SBen Hutchings */ 1144659c9bc1SBen Hutchings ret = jmicron_pmos(chip, 1); 1145659c9bc1SBen Hutchings if (ret) { 1146659c9bc1SBen Hutchings dev_err(&chip->pdev->dev, "Failure enabling card power\n"); 1147659c9bc1SBen Hutchings return ret; 1148659c9bc1SBen Hutchings } 1149659c9bc1SBen Hutchings 1150659c9bc1SBen Hutchings /* quirk for unsable RO-detection on JM388 chips */ 1151659c9bc1SBen Hutchings if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD || 1152659c9bc1SBen Hutchings chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) 1153659c9bc1SBen Hutchings chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT; 1154659c9bc1SBen Hutchings 1155659c9bc1SBen Hutchings return 0; 1156659c9bc1SBen Hutchings } 1157659c9bc1SBen Hutchings 1158659c9bc1SBen Hutchings static void jmicron_enable_mmc(struct sdhci_host *host, int on) 1159659c9bc1SBen Hutchings { 1160659c9bc1SBen Hutchings u8 scratch; 1161659c9bc1SBen Hutchings 1162659c9bc1SBen Hutchings scratch = readb(host->ioaddr + 0xC0); 1163659c9bc1SBen Hutchings 1164659c9bc1SBen Hutchings if (on) 1165659c9bc1SBen Hutchings scratch |= 0x01; 1166659c9bc1SBen Hutchings else 1167659c9bc1SBen Hutchings scratch &= ~0x01; 1168659c9bc1SBen Hutchings 1169659c9bc1SBen Hutchings writeb(scratch, host->ioaddr + 0xC0); 1170659c9bc1SBen Hutchings } 1171659c9bc1SBen Hutchings 1172659c9bc1SBen Hutchings static int jmicron_probe_slot(struct sdhci_pci_slot *slot) 1173659c9bc1SBen Hutchings { 1174659c9bc1SBen Hutchings if (slot->chip->pdev->revision == 0) { 1175659c9bc1SBen Hutchings u16 version; 1176659c9bc1SBen Hutchings 1177659c9bc1SBen Hutchings version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION); 1178659c9bc1SBen Hutchings version = (version & SDHCI_VENDOR_VER_MASK) >> 1179659c9bc1SBen Hutchings SDHCI_VENDOR_VER_SHIFT; 1180659c9bc1SBen Hutchings 1181659c9bc1SBen Hutchings /* 1182659c9bc1SBen Hutchings * Older versions of the chip have lots of nasty glitches 1183659c9bc1SBen Hutchings * in the ADMA engine. It's best just to avoid it 1184659c9bc1SBen Hutchings * completely. 1185659c9bc1SBen Hutchings */ 1186659c9bc1SBen Hutchings if (version < 0xAC) 1187659c9bc1SBen Hutchings slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA; 1188659c9bc1SBen Hutchings } 1189659c9bc1SBen Hutchings 1190659c9bc1SBen Hutchings /* JM388 MMC doesn't support 1.8V while SD supports it */ 1191659c9bc1SBen Hutchings if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { 1192659c9bc1SBen Hutchings slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 | 1193659c9bc1SBen Hutchings MMC_VDD_29_30 | MMC_VDD_30_31 | 1194659c9bc1SBen Hutchings MMC_VDD_165_195; /* allow 1.8V */ 1195659c9bc1SBen Hutchings slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 | 1196659c9bc1SBen Hutchings MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */ 1197659c9bc1SBen Hutchings } 1198659c9bc1SBen Hutchings 1199659c9bc1SBen Hutchings /* 1200659c9bc1SBen Hutchings * The secondary interface requires a bit set to get the 1201659c9bc1SBen Hutchings * interrupts. 1202659c9bc1SBen Hutchings */ 1203659c9bc1SBen Hutchings if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1204659c9bc1SBen Hutchings slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) 1205659c9bc1SBen Hutchings jmicron_enable_mmc(slot->host, 1); 1206659c9bc1SBen Hutchings 1207659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST; 1208659c9bc1SBen Hutchings 1209659c9bc1SBen Hutchings return 0; 1210659c9bc1SBen Hutchings } 1211659c9bc1SBen Hutchings 1212659c9bc1SBen Hutchings static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead) 1213659c9bc1SBen Hutchings { 1214659c9bc1SBen Hutchings if (dead) 1215659c9bc1SBen Hutchings return; 1216659c9bc1SBen Hutchings 1217659c9bc1SBen Hutchings if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1218659c9bc1SBen Hutchings slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) 1219659c9bc1SBen Hutchings jmicron_enable_mmc(slot->host, 0); 1220659c9bc1SBen Hutchings } 1221659c9bc1SBen Hutchings 1222b7813f0fSAdrian Hunter #ifdef CONFIG_PM_SLEEP 1223659c9bc1SBen Hutchings static int jmicron_suspend(struct sdhci_pci_chip *chip) 1224659c9bc1SBen Hutchings { 122530cf2803SAdrian Hunter int i, ret; 122630cf2803SAdrian Hunter 12275c3c6126SAdrian Hunter ret = sdhci_pci_suspend_host(chip); 122830cf2803SAdrian Hunter if (ret) 122930cf2803SAdrian Hunter return ret; 1230659c9bc1SBen Hutchings 1231659c9bc1SBen Hutchings if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1232659c9bc1SBen Hutchings chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { 1233659c9bc1SBen Hutchings for (i = 0; i < chip->num_slots; i++) 1234659c9bc1SBen Hutchings jmicron_enable_mmc(chip->slots[i]->host, 0); 1235659c9bc1SBen Hutchings } 1236659c9bc1SBen Hutchings 1237659c9bc1SBen Hutchings return 0; 1238659c9bc1SBen Hutchings } 1239659c9bc1SBen Hutchings 1240659c9bc1SBen Hutchings static int jmicron_resume(struct sdhci_pci_chip *chip) 1241659c9bc1SBen Hutchings { 1242659c9bc1SBen Hutchings int ret, i; 1243659c9bc1SBen Hutchings 1244659c9bc1SBen Hutchings if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1245659c9bc1SBen Hutchings chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { 1246659c9bc1SBen Hutchings for (i = 0; i < chip->num_slots; i++) 1247659c9bc1SBen Hutchings jmicron_enable_mmc(chip->slots[i]->host, 1); 1248659c9bc1SBen Hutchings } 1249659c9bc1SBen Hutchings 1250659c9bc1SBen Hutchings ret = jmicron_pmos(chip, 1); 1251659c9bc1SBen Hutchings if (ret) { 1252659c9bc1SBen Hutchings dev_err(&chip->pdev->dev, "Failure enabling card power\n"); 1253659c9bc1SBen Hutchings return ret; 1254659c9bc1SBen Hutchings } 1255659c9bc1SBen Hutchings 125630cf2803SAdrian Hunter return sdhci_pci_resume_host(chip); 1257659c9bc1SBen Hutchings } 1258b7813f0fSAdrian Hunter #endif 1259659c9bc1SBen Hutchings 1260659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_jmicron = { 1261659c9bc1SBen Hutchings .probe = jmicron_probe, 1262659c9bc1SBen Hutchings 1263659c9bc1SBen Hutchings .probe_slot = jmicron_probe_slot, 1264659c9bc1SBen Hutchings .remove_slot = jmicron_remove_slot, 1265659c9bc1SBen Hutchings 1266b7813f0fSAdrian Hunter #ifdef CONFIG_PM_SLEEP 1267659c9bc1SBen Hutchings .suspend = jmicron_suspend, 1268659c9bc1SBen Hutchings .resume = jmicron_resume, 1269b7813f0fSAdrian Hunter #endif 1270659c9bc1SBen Hutchings }; 1271659c9bc1SBen Hutchings 1272659c9bc1SBen Hutchings /* SysKonnect CardBus2SDIO extra registers */ 1273659c9bc1SBen Hutchings #define SYSKT_CTRL 0x200 1274659c9bc1SBen Hutchings #define SYSKT_RDFIFO_STAT 0x204 1275659c9bc1SBen Hutchings #define SYSKT_WRFIFO_STAT 0x208 1276659c9bc1SBen Hutchings #define SYSKT_POWER_DATA 0x20c 1277659c9bc1SBen Hutchings #define SYSKT_POWER_330 0xef 1278659c9bc1SBen Hutchings #define SYSKT_POWER_300 0xf8 1279659c9bc1SBen Hutchings #define SYSKT_POWER_184 0xcc 1280659c9bc1SBen Hutchings #define SYSKT_POWER_CMD 0x20d 1281659c9bc1SBen Hutchings #define SYSKT_POWER_START (1 << 7) 1282659c9bc1SBen Hutchings #define SYSKT_POWER_STATUS 0x20e 1283659c9bc1SBen Hutchings #define SYSKT_POWER_STATUS_OK (1 << 0) 1284659c9bc1SBen Hutchings #define SYSKT_BOARD_REV 0x210 1285659c9bc1SBen Hutchings #define SYSKT_CHIP_REV 0x211 1286659c9bc1SBen Hutchings #define SYSKT_CONF_DATA 0x212 1287659c9bc1SBen Hutchings #define SYSKT_CONF_DATA_1V8 (1 << 2) 1288659c9bc1SBen Hutchings #define SYSKT_CONF_DATA_2V5 (1 << 1) 1289659c9bc1SBen Hutchings #define SYSKT_CONF_DATA_3V3 (1 << 0) 1290659c9bc1SBen Hutchings 1291659c9bc1SBen Hutchings static int syskt_probe(struct sdhci_pci_chip *chip) 1292659c9bc1SBen Hutchings { 1293659c9bc1SBen Hutchings if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { 1294659c9bc1SBen Hutchings chip->pdev->class &= ~0x0000FF; 1295659c9bc1SBen Hutchings chip->pdev->class |= PCI_SDHCI_IFDMA; 1296659c9bc1SBen Hutchings } 1297659c9bc1SBen Hutchings return 0; 1298659c9bc1SBen Hutchings } 1299659c9bc1SBen Hutchings 1300659c9bc1SBen Hutchings static int syskt_probe_slot(struct sdhci_pci_slot *slot) 1301659c9bc1SBen Hutchings { 1302659c9bc1SBen Hutchings int tm, ps; 1303659c9bc1SBen Hutchings 1304659c9bc1SBen Hutchings u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV); 1305659c9bc1SBen Hutchings u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV); 1306659c9bc1SBen Hutchings dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, " 1307659c9bc1SBen Hutchings "board rev %d.%d, chip rev %d.%d\n", 1308659c9bc1SBen Hutchings board_rev >> 4, board_rev & 0xf, 1309659c9bc1SBen Hutchings chip_rev >> 4, chip_rev & 0xf); 1310659c9bc1SBen Hutchings if (chip_rev >= 0x20) 1311659c9bc1SBen Hutchings slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA; 1312659c9bc1SBen Hutchings 1313659c9bc1SBen Hutchings writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA); 1314659c9bc1SBen Hutchings writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD); 1315659c9bc1SBen Hutchings udelay(50); 1316659c9bc1SBen Hutchings tm = 10; /* Wait max 1 ms */ 1317659c9bc1SBen Hutchings do { 1318659c9bc1SBen Hutchings ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS); 1319659c9bc1SBen Hutchings if (ps & SYSKT_POWER_STATUS_OK) 1320659c9bc1SBen Hutchings break; 1321659c9bc1SBen Hutchings udelay(100); 1322659c9bc1SBen Hutchings } while (--tm); 1323659c9bc1SBen Hutchings if (!tm) { 1324659c9bc1SBen Hutchings dev_err(&slot->chip->pdev->dev, 1325659c9bc1SBen Hutchings "power regulator never stabilized"); 1326659c9bc1SBen Hutchings writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD); 1327659c9bc1SBen Hutchings return -ENODEV; 1328659c9bc1SBen Hutchings } 1329659c9bc1SBen Hutchings 1330659c9bc1SBen Hutchings return 0; 1331659c9bc1SBen Hutchings } 1332659c9bc1SBen Hutchings 1333659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_syskt = { 1334659c9bc1SBen Hutchings .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER, 1335659c9bc1SBen Hutchings .probe = syskt_probe, 1336659c9bc1SBen Hutchings .probe_slot = syskt_probe_slot, 1337659c9bc1SBen Hutchings }; 1338659c9bc1SBen Hutchings 1339659c9bc1SBen Hutchings static int via_probe(struct sdhci_pci_chip *chip) 1340659c9bc1SBen Hutchings { 1341659c9bc1SBen Hutchings if (chip->pdev->revision == 0x10) 1342659c9bc1SBen Hutchings chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER; 1343659c9bc1SBen Hutchings 1344659c9bc1SBen Hutchings return 0; 1345659c9bc1SBen Hutchings } 1346659c9bc1SBen Hutchings 1347659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_via = { 1348659c9bc1SBen Hutchings .probe = via_probe, 1349659c9bc1SBen Hutchings }; 1350659c9bc1SBen Hutchings 1351659c9bc1SBen Hutchings static int rtsx_probe_slot(struct sdhci_pci_slot *slot) 1352659c9bc1SBen Hutchings { 1353659c9bc1SBen Hutchings slot->host->mmc->caps2 |= MMC_CAP2_HS200; 1354659c9bc1SBen Hutchings return 0; 1355659c9bc1SBen Hutchings } 1356659c9bc1SBen Hutchings 1357659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_rtsx = { 1358659c9bc1SBen Hutchings .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 1359659c9bc1SBen Hutchings SDHCI_QUIRK2_BROKEN_64_BIT_DMA | 1360659c9bc1SBen Hutchings SDHCI_QUIRK2_BROKEN_DDR50, 1361659c9bc1SBen Hutchings .probe_slot = rtsx_probe_slot, 1362659c9bc1SBen Hutchings }; 1363659c9bc1SBen Hutchings 1364659c9bc1SBen Hutchings /*AMD chipset generation*/ 1365659c9bc1SBen Hutchings enum amd_chipset_gen { 1366659c9bc1SBen Hutchings AMD_CHIPSET_BEFORE_ML, 1367659c9bc1SBen Hutchings AMD_CHIPSET_CZ, 1368659c9bc1SBen Hutchings AMD_CHIPSET_NL, 1369659c9bc1SBen Hutchings AMD_CHIPSET_UNKNOWN, 1370659c9bc1SBen Hutchings }; 1371659c9bc1SBen Hutchings 1372c31165d7SShyam Sundar S K /* AMD registers */ 1373c31165d7SShyam Sundar S K #define AMD_SD_AUTO_PATTERN 0xB8 1374c31165d7SShyam Sundar S K #define AMD_MSLEEP_DURATION 4 1375c31165d7SShyam Sundar S K #define AMD_SD_MISC_CONTROL 0xD0 1376c31165d7SShyam Sundar S K #define AMD_MAX_TUNE_VALUE 0x0B 1377c31165d7SShyam Sundar S K #define AMD_AUTO_TUNE_SEL 0x10800 1378c31165d7SShyam Sundar S K #define AMD_FIFO_PTR 0x30 1379c31165d7SShyam Sundar S K #define AMD_BIT_MASK 0x1F 1380c31165d7SShyam Sundar S K 1381c31165d7SShyam Sundar S K static void amd_tuning_reset(struct sdhci_host *host) 1382c31165d7SShyam Sundar S K { 1383c31165d7SShyam Sundar S K unsigned int val; 1384c31165d7SShyam Sundar S K 1385c31165d7SShyam Sundar S K val = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1386c31165d7SShyam Sundar S K val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING; 1387c31165d7SShyam Sundar S K sdhci_writew(host, val, SDHCI_HOST_CONTROL2); 1388c31165d7SShyam Sundar S K 1389c31165d7SShyam Sundar S K val = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1390c31165d7SShyam Sundar S K val &= ~SDHCI_CTRL_EXEC_TUNING; 1391c31165d7SShyam Sundar S K sdhci_writew(host, val, SDHCI_HOST_CONTROL2); 1392c31165d7SShyam Sundar S K } 1393c31165d7SShyam Sundar S K 1394c31165d7SShyam Sundar S K static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase) 1395c31165d7SShyam Sundar S K { 1396c31165d7SShyam Sundar S K unsigned int val; 1397c31165d7SShyam Sundar S K 1398c31165d7SShyam Sundar S K pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val); 1399c31165d7SShyam Sundar S K val &= ~AMD_BIT_MASK; 1400c31165d7SShyam Sundar S K val |= (AMD_AUTO_TUNE_SEL | (phase << 1)); 1401c31165d7SShyam Sundar S K pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val); 1402c31165d7SShyam Sundar S K } 1403c31165d7SShyam Sundar S K 1404c31165d7SShyam Sundar S K static void amd_enable_manual_tuning(struct pci_dev *pdev) 1405c31165d7SShyam Sundar S K { 1406c31165d7SShyam Sundar S K unsigned int val; 1407c31165d7SShyam Sundar S K 1408c31165d7SShyam Sundar S K pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val); 1409c31165d7SShyam Sundar S K val |= AMD_FIFO_PTR; 1410c31165d7SShyam Sundar S K pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val); 1411c31165d7SShyam Sundar S K } 1412c31165d7SShyam Sundar S K 1413300ad899SDaniel Kurtz static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode) 1414c31165d7SShyam Sundar S K { 1415c31165d7SShyam Sundar S K struct sdhci_pci_slot *slot = sdhci_priv(host); 1416c31165d7SShyam Sundar S K struct pci_dev *pdev = slot->chip->pdev; 1417c31165d7SShyam Sundar S K u8 valid_win = 0; 1418c31165d7SShyam Sundar S K u8 valid_win_max = 0; 1419c31165d7SShyam Sundar S K u8 valid_win_end = 0; 1420c31165d7SShyam Sundar S K u8 ctrl, tune_around; 1421c31165d7SShyam Sundar S K 1422c31165d7SShyam Sundar S K amd_tuning_reset(host); 1423c31165d7SShyam Sundar S K 1424c31165d7SShyam Sundar S K for (tune_around = 0; tune_around < 12; tune_around++) { 1425c31165d7SShyam Sundar S K amd_config_tuning_phase(pdev, tune_around); 1426c31165d7SShyam Sundar S K 1427c31165d7SShyam Sundar S K if (mmc_send_tuning(host->mmc, opcode, NULL)) { 1428c31165d7SShyam Sundar S K valid_win = 0; 1429c31165d7SShyam Sundar S K msleep(AMD_MSLEEP_DURATION); 1430c31165d7SShyam Sundar S K ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA; 1431c31165d7SShyam Sundar S K sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET); 1432c31165d7SShyam Sundar S K } else if (++valid_win > valid_win_max) { 1433c31165d7SShyam Sundar S K valid_win_max = valid_win; 1434c31165d7SShyam Sundar S K valid_win_end = tune_around; 1435c31165d7SShyam Sundar S K } 1436c31165d7SShyam Sundar S K } 1437c31165d7SShyam Sundar S K 1438c31165d7SShyam Sundar S K if (!valid_win_max) { 1439c31165d7SShyam Sundar S K dev_err(&pdev->dev, "no tuning point found\n"); 1440c31165d7SShyam Sundar S K return -EIO; 1441c31165d7SShyam Sundar S K } 1442c31165d7SShyam Sundar S K 1443c31165d7SShyam Sundar S K amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2); 1444c31165d7SShyam Sundar S K 1445c31165d7SShyam Sundar S K amd_enable_manual_tuning(pdev); 1446c31165d7SShyam Sundar S K 1447c31165d7SShyam Sundar S K host->mmc->retune_period = 0; 1448c31165d7SShyam Sundar S K 1449c31165d7SShyam Sundar S K return 0; 1450c31165d7SShyam Sundar S K } 1451c31165d7SShyam Sundar S K 1452300ad899SDaniel Kurtz static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode) 1453300ad899SDaniel Kurtz { 1454300ad899SDaniel Kurtz struct sdhci_host *host = mmc_priv(mmc); 1455300ad899SDaniel Kurtz 1456300ad899SDaniel Kurtz /* AMD requires custom HS200 tuning */ 1457300ad899SDaniel Kurtz if (host->timing == MMC_TIMING_MMC_HS200) 1458300ad899SDaniel Kurtz return amd_execute_tuning_hs200(host, opcode); 1459300ad899SDaniel Kurtz 1460300ad899SDaniel Kurtz /* Otherwise perform standard SDHCI tuning */ 1461300ad899SDaniel Kurtz return sdhci_execute_tuning(mmc, opcode); 1462300ad899SDaniel Kurtz } 1463300ad899SDaniel Kurtz 1464300ad899SDaniel Kurtz static int amd_probe_slot(struct sdhci_pci_slot *slot) 1465300ad899SDaniel Kurtz { 1466300ad899SDaniel Kurtz struct mmc_host_ops *ops = &slot->host->mmc_host_ops; 1467300ad899SDaniel Kurtz 1468300ad899SDaniel Kurtz ops->execute_tuning = amd_execute_tuning; 1469300ad899SDaniel Kurtz 1470300ad899SDaniel Kurtz return 0; 1471300ad899SDaniel Kurtz } 1472300ad899SDaniel Kurtz 1473659c9bc1SBen Hutchings static int amd_probe(struct sdhci_pci_chip *chip) 1474659c9bc1SBen Hutchings { 1475659c9bc1SBen Hutchings struct pci_dev *smbus_dev; 1476659c9bc1SBen Hutchings enum amd_chipset_gen gen; 1477659c9bc1SBen Hutchings 1478659c9bc1SBen Hutchings smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, 1479659c9bc1SBen Hutchings PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL); 1480659c9bc1SBen Hutchings if (smbus_dev) { 1481659c9bc1SBen Hutchings gen = AMD_CHIPSET_BEFORE_ML; 1482659c9bc1SBen Hutchings } else { 1483659c9bc1SBen Hutchings smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, 1484659c9bc1SBen Hutchings PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL); 1485659c9bc1SBen Hutchings if (smbus_dev) { 1486659c9bc1SBen Hutchings if (smbus_dev->revision < 0x51) 1487659c9bc1SBen Hutchings gen = AMD_CHIPSET_CZ; 1488659c9bc1SBen Hutchings else 1489659c9bc1SBen Hutchings gen = AMD_CHIPSET_NL; 1490659c9bc1SBen Hutchings } else { 1491659c9bc1SBen Hutchings gen = AMD_CHIPSET_UNKNOWN; 1492659c9bc1SBen Hutchings } 1493659c9bc1SBen Hutchings } 1494659c9bc1SBen Hutchings 1495c31165d7SShyam Sundar S K if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ) 1496659c9bc1SBen Hutchings chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD; 1497659c9bc1SBen Hutchings 1498659c9bc1SBen Hutchings return 0; 1499659c9bc1SBen Hutchings } 1500659c9bc1SBen Hutchings 1501c31165d7SShyam Sundar S K static const struct sdhci_ops amd_sdhci_pci_ops = { 1502c31165d7SShyam Sundar S K .set_clock = sdhci_set_clock, 1503c31165d7SShyam Sundar S K .enable_dma = sdhci_pci_enable_dma, 1504adc16398SMichał Mirosław .set_bus_width = sdhci_set_bus_width, 1505c31165d7SShyam Sundar S K .reset = sdhci_reset, 1506c31165d7SShyam Sundar S K .set_uhs_signaling = sdhci_set_uhs_signaling, 1507c31165d7SShyam Sundar S K }; 1508c31165d7SShyam Sundar S K 1509659c9bc1SBen Hutchings static const struct sdhci_pci_fixes sdhci_amd = { 1510659c9bc1SBen Hutchings .probe = amd_probe, 1511c31165d7SShyam Sundar S K .ops = &amd_sdhci_pci_ops, 1512300ad899SDaniel Kurtz .probe_slot = amd_probe_slot, 1513659c9bc1SBen Hutchings }; 1514659c9bc1SBen Hutchings 1515659c9bc1SBen Hutchings static const struct pci_device_id pci_ids[] = { 1516c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(RICOH, R5C822, ricoh), 1517c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(RICOH, R5C843, ricoh_mmc), 1518c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc), 1519c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc), 1520c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(ENE, CB712_SD, ene_712), 1521c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712), 1522c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(ENE, CB714_SD, ene_714), 1523c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714), 1524c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe), 1525c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD, jmicron), 1526c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron), 1527c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(JMICRON, JMB388_SD, jmicron), 1528c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron), 1529c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt), 1530c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(VIA, 95D0, via), 1531c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx), 1532c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, QRK_SD, intel_qrk), 1533c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MRST_SD0, intel_mrst_hc0), 1534c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MRST_SD1, intel_mrst_hc1_hc2), 1535c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MRST_SD2, intel_mrst_hc1_hc2), 1536c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MFD_SD, intel_mfd_sd), 1537c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio), 1538c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio), 1539c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc), 1540c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc), 1541c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio), 1542c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio), 1543c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BYT_EMMC, intel_byt_emmc), 1544c949c907SMatthias Kraemer SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio), 1545c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BYT_SDIO, intel_byt_sdio), 1546c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BYT_SD, intel_byt_sd), 1547c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc), 1548c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BSW_EMMC, intel_byt_emmc), 1549c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BSW_SDIO, intel_byt_sdio), 1550c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BSW_SD, intel_byt_sd), 1551c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd), 1552c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio), 1553c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio), 1554c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc), 1555c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc), 1556c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc), 1557c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, SPT_EMMC, intel_byt_emmc), 1558c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, SPT_SDIO, intel_byt_sdio), 1559c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, SPT_SD, intel_byt_sd), 1560c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, DNV_EMMC, intel_byt_emmc), 1561cdaba732SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, CDF_EMMC, intel_glk_emmc), 1562c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BXT_EMMC, intel_byt_emmc), 1563c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BXT_SDIO, intel_byt_sdio), 1564c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BXT_SD, intel_byt_sd), 1565c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc), 1566c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio), 1567c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, BXTM_SD, intel_byt_sd), 1568c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc), 1569c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio), 1570c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd), 1571bc55dcd8SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc), 1572c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio), 1573c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd), 1574bc55dcd8SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc), 1575bc55dcd8SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd), 1576bc55dcd8SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd), 15775637ffadSAdrian Hunter SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc), 15785637ffadSAdrian Hunter SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd), 1579*765c5967SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, CML_EMMC, intel_glk_emmc), 1580*765c5967SAdrian Hunter SDHCI_PCI_DEVICE(INTEL, CML_SD, intel_byt_sd), 1581c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, 8120, o2), 1582c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, 8220, o2), 1583c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, 8221, o2), 1584c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, 8320, o2), 1585c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, 8321, o2), 1586c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, FUJIN2, o2), 1587c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, SDS0, o2), 1588c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, SDS1, o2), 1589c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, SEABIRD0, o2), 1590c949c907SMatthias Kraemer SDHCI_PCI_DEVICE(O2, SEABIRD1, o2), 1591d72d72cdSAtul Garg SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan), 1592152f8204SPrabu Thangamuthu SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps), 1593c949c907SMatthias Kraemer SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd), 1594c949c907SMatthias Kraemer /* Generic SD host controller */ 1595c949c907SMatthias Kraemer {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)}, 1596659c9bc1SBen Hutchings { /* end: all zeroes */ }, 1597659c9bc1SBen Hutchings }; 1598659c9bc1SBen Hutchings 1599659c9bc1SBen Hutchings MODULE_DEVICE_TABLE(pci, pci_ids); 1600659c9bc1SBen Hutchings 1601659c9bc1SBen Hutchings /*****************************************************************************\ 1602659c9bc1SBen Hutchings * * 1603659c9bc1SBen Hutchings * SDHCI core callbacks * 1604659c9bc1SBen Hutchings * * 1605659c9bc1SBen Hutchings \*****************************************************************************/ 1606659c9bc1SBen Hutchings 1607d72d72cdSAtul Garg int sdhci_pci_enable_dma(struct sdhci_host *host) 1608659c9bc1SBen Hutchings { 1609659c9bc1SBen Hutchings struct sdhci_pci_slot *slot; 1610659c9bc1SBen Hutchings struct pci_dev *pdev; 1611659c9bc1SBen Hutchings 1612659c9bc1SBen Hutchings slot = sdhci_priv(host); 1613659c9bc1SBen Hutchings pdev = slot->chip->pdev; 1614659c9bc1SBen Hutchings 1615659c9bc1SBen Hutchings if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) && 1616659c9bc1SBen Hutchings ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) && 1617659c9bc1SBen Hutchings (host->flags & SDHCI_USE_SDMA)) { 1618659c9bc1SBen Hutchings dev_warn(&pdev->dev, "Will use DMA mode even though HW " 1619659c9bc1SBen Hutchings "doesn't fully claim to support it.\n"); 1620659c9bc1SBen Hutchings } 1621659c9bc1SBen Hutchings 1622659c9bc1SBen Hutchings pci_set_master(pdev); 1623659c9bc1SBen Hutchings 1624659c9bc1SBen Hutchings return 0; 1625659c9bc1SBen Hutchings } 1626659c9bc1SBen Hutchings 1627659c9bc1SBen Hutchings static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host) 1628659c9bc1SBen Hutchings { 1629659c9bc1SBen Hutchings struct sdhci_pci_slot *slot = sdhci_priv(host); 1630659c9bc1SBen Hutchings int rst_n_gpio = slot->rst_n_gpio; 1631659c9bc1SBen Hutchings 1632659c9bc1SBen Hutchings if (!gpio_is_valid(rst_n_gpio)) 1633659c9bc1SBen Hutchings return; 1634659c9bc1SBen Hutchings gpio_set_value_cansleep(rst_n_gpio, 0); 1635659c9bc1SBen Hutchings /* For eMMC, minimum is 1us but give it 10us for good measure */ 1636659c9bc1SBen Hutchings udelay(10); 1637659c9bc1SBen Hutchings gpio_set_value_cansleep(rst_n_gpio, 1); 1638659c9bc1SBen Hutchings /* For eMMC, minimum is 200us but give it 300us for good measure */ 1639659c9bc1SBen Hutchings usleep_range(300, 1000); 1640659c9bc1SBen Hutchings } 1641659c9bc1SBen Hutchings 1642659c9bc1SBen Hutchings static void sdhci_pci_hw_reset(struct sdhci_host *host) 1643659c9bc1SBen Hutchings { 1644659c9bc1SBen Hutchings struct sdhci_pci_slot *slot = sdhci_priv(host); 1645659c9bc1SBen Hutchings 1646659c9bc1SBen Hutchings if (slot->hw_reset) 1647659c9bc1SBen Hutchings slot->hw_reset(host); 1648659c9bc1SBen Hutchings } 1649659c9bc1SBen Hutchings 1650659c9bc1SBen Hutchings static const struct sdhci_ops sdhci_pci_ops = { 1651659c9bc1SBen Hutchings .set_clock = sdhci_set_clock, 1652659c9bc1SBen Hutchings .enable_dma = sdhci_pci_enable_dma, 1653adc16398SMichał Mirosław .set_bus_width = sdhci_set_bus_width, 1654659c9bc1SBen Hutchings .reset = sdhci_reset, 1655659c9bc1SBen Hutchings .set_uhs_signaling = sdhci_set_uhs_signaling, 1656659c9bc1SBen Hutchings .hw_reset = sdhci_pci_hw_reset, 1657659c9bc1SBen Hutchings }; 1658659c9bc1SBen Hutchings 1659659c9bc1SBen Hutchings /*****************************************************************************\ 1660659c9bc1SBen Hutchings * * 1661659c9bc1SBen Hutchings * Suspend/resume * 1662659c9bc1SBen Hutchings * * 1663659c9bc1SBen Hutchings \*****************************************************************************/ 1664659c9bc1SBen Hutchings 1665f9900f15SUlf Hansson #ifdef CONFIG_PM_SLEEP 1666659c9bc1SBen Hutchings static int sdhci_pci_suspend(struct device *dev) 1667659c9bc1SBen Hutchings { 1668659c9bc1SBen Hutchings struct pci_dev *pdev = to_pci_dev(dev); 166930cf2803SAdrian Hunter struct sdhci_pci_chip *chip = pci_get_drvdata(pdev); 1670659c9bc1SBen Hutchings 1671659c9bc1SBen Hutchings if (!chip) 1672659c9bc1SBen Hutchings return 0; 1673659c9bc1SBen Hutchings 167430cf2803SAdrian Hunter if (chip->fixes && chip->fixes->suspend) 167530cf2803SAdrian Hunter return chip->fixes->suspend(chip); 1676659c9bc1SBen Hutchings 167730cf2803SAdrian Hunter return sdhci_pci_suspend_host(chip); 1678659c9bc1SBen Hutchings } 1679659c9bc1SBen Hutchings 1680659c9bc1SBen Hutchings static int sdhci_pci_resume(struct device *dev) 1681659c9bc1SBen Hutchings { 1682659c9bc1SBen Hutchings struct pci_dev *pdev = to_pci_dev(dev); 168330cf2803SAdrian Hunter struct sdhci_pci_chip *chip = pci_get_drvdata(pdev); 1684659c9bc1SBen Hutchings 1685659c9bc1SBen Hutchings if (!chip) 1686659c9bc1SBen Hutchings return 0; 1687659c9bc1SBen Hutchings 168830cf2803SAdrian Hunter if (chip->fixes && chip->fixes->resume) 168930cf2803SAdrian Hunter return chip->fixes->resume(chip); 1690659c9bc1SBen Hutchings 169130cf2803SAdrian Hunter return sdhci_pci_resume_host(chip); 1692659c9bc1SBen Hutchings } 1693f9900f15SUlf Hansson #endif 1694659c9bc1SBen Hutchings 1695f9900f15SUlf Hansson #ifdef CONFIG_PM 1696659c9bc1SBen Hutchings static int sdhci_pci_runtime_suspend(struct device *dev) 1697659c9bc1SBen Hutchings { 1698923a231cSGeliang Tang struct pci_dev *pdev = to_pci_dev(dev); 1699966d696aSAdrian Hunter struct sdhci_pci_chip *chip = pci_get_drvdata(pdev); 1700659c9bc1SBen Hutchings 1701659c9bc1SBen Hutchings if (!chip) 1702659c9bc1SBen Hutchings return 0; 1703659c9bc1SBen Hutchings 1704966d696aSAdrian Hunter if (chip->fixes && chip->fixes->runtime_suspend) 1705966d696aSAdrian Hunter return chip->fixes->runtime_suspend(chip); 1706659c9bc1SBen Hutchings 1707966d696aSAdrian Hunter return sdhci_pci_runtime_suspend_host(chip); 1708659c9bc1SBen Hutchings } 1709659c9bc1SBen Hutchings 1710659c9bc1SBen Hutchings static int sdhci_pci_runtime_resume(struct device *dev) 1711659c9bc1SBen Hutchings { 1712923a231cSGeliang Tang struct pci_dev *pdev = to_pci_dev(dev); 1713966d696aSAdrian Hunter struct sdhci_pci_chip *chip = pci_get_drvdata(pdev); 1714659c9bc1SBen Hutchings 1715659c9bc1SBen Hutchings if (!chip) 1716659c9bc1SBen Hutchings return 0; 1717659c9bc1SBen Hutchings 1718966d696aSAdrian Hunter if (chip->fixes && chip->fixes->runtime_resume) 1719966d696aSAdrian Hunter return chip->fixes->runtime_resume(chip); 1720659c9bc1SBen Hutchings 1721966d696aSAdrian Hunter return sdhci_pci_runtime_resume_host(chip); 1722659c9bc1SBen Hutchings } 1723f9900f15SUlf Hansson #endif 1724659c9bc1SBen Hutchings 1725659c9bc1SBen Hutchings static const struct dev_pm_ops sdhci_pci_pm_ops = { 1726f9900f15SUlf Hansson SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume) 1727659c9bc1SBen Hutchings SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend, 1728659c9bc1SBen Hutchings sdhci_pci_runtime_resume, NULL) 1729659c9bc1SBen Hutchings }; 1730659c9bc1SBen Hutchings 1731659c9bc1SBen Hutchings /*****************************************************************************\ 1732659c9bc1SBen Hutchings * * 1733659c9bc1SBen Hutchings * Device probing/removal * 1734659c9bc1SBen Hutchings * * 1735659c9bc1SBen Hutchings \*****************************************************************************/ 1736659c9bc1SBen Hutchings 1737659c9bc1SBen Hutchings static struct sdhci_pci_slot *sdhci_pci_probe_slot( 1738659c9bc1SBen Hutchings struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar, 1739659c9bc1SBen Hutchings int slotno) 1740659c9bc1SBen Hutchings { 1741659c9bc1SBen Hutchings struct sdhci_pci_slot *slot; 1742659c9bc1SBen Hutchings struct sdhci_host *host; 1743659c9bc1SBen Hutchings int ret, bar = first_bar + slotno; 1744ac9f67b5SAdrian Hunter size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0; 1745659c9bc1SBen Hutchings 1746659c9bc1SBen Hutchings if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { 1747659c9bc1SBen Hutchings dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); 1748659c9bc1SBen Hutchings return ERR_PTR(-ENODEV); 1749659c9bc1SBen Hutchings } 1750659c9bc1SBen Hutchings 1751659c9bc1SBen Hutchings if (pci_resource_len(pdev, bar) < 0x100) { 1752659c9bc1SBen Hutchings dev_err(&pdev->dev, "Invalid iomem size. You may " 1753659c9bc1SBen Hutchings "experience problems.\n"); 1754659c9bc1SBen Hutchings } 1755659c9bc1SBen Hutchings 1756659c9bc1SBen Hutchings if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { 1757659c9bc1SBen Hutchings dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n"); 1758659c9bc1SBen Hutchings return ERR_PTR(-ENODEV); 1759659c9bc1SBen Hutchings } 1760659c9bc1SBen Hutchings 1761659c9bc1SBen Hutchings if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { 1762659c9bc1SBen Hutchings dev_err(&pdev->dev, "Unknown interface. Aborting.\n"); 1763659c9bc1SBen Hutchings return ERR_PTR(-ENODEV); 1764659c9bc1SBen Hutchings } 1765659c9bc1SBen Hutchings 1766ac9f67b5SAdrian Hunter host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size); 1767659c9bc1SBen Hutchings if (IS_ERR(host)) { 1768659c9bc1SBen Hutchings dev_err(&pdev->dev, "cannot allocate host\n"); 1769659c9bc1SBen Hutchings return ERR_CAST(host); 1770659c9bc1SBen Hutchings } 1771659c9bc1SBen Hutchings 1772659c9bc1SBen Hutchings slot = sdhci_priv(host); 1773659c9bc1SBen Hutchings 1774659c9bc1SBen Hutchings slot->chip = chip; 1775659c9bc1SBen Hutchings slot->host = host; 1776659c9bc1SBen Hutchings slot->rst_n_gpio = -EINVAL; 1777659c9bc1SBen Hutchings slot->cd_gpio = -EINVAL; 1778659c9bc1SBen Hutchings slot->cd_idx = -1; 1779659c9bc1SBen Hutchings 1780659c9bc1SBen Hutchings /* Retrieve platform data if there is any */ 1781659c9bc1SBen Hutchings if (*sdhci_pci_get_data) 1782659c9bc1SBen Hutchings slot->data = sdhci_pci_get_data(pdev, slotno); 1783659c9bc1SBen Hutchings 1784659c9bc1SBen Hutchings if (slot->data) { 1785659c9bc1SBen Hutchings if (slot->data->setup) { 1786659c9bc1SBen Hutchings ret = slot->data->setup(slot->data); 1787659c9bc1SBen Hutchings if (ret) { 1788659c9bc1SBen Hutchings dev_err(&pdev->dev, "platform setup failed\n"); 1789659c9bc1SBen Hutchings goto free; 1790659c9bc1SBen Hutchings } 1791659c9bc1SBen Hutchings } 1792659c9bc1SBen Hutchings slot->rst_n_gpio = slot->data->rst_n_gpio; 1793659c9bc1SBen Hutchings slot->cd_gpio = slot->data->cd_gpio; 1794659c9bc1SBen Hutchings } 1795659c9bc1SBen Hutchings 1796659c9bc1SBen Hutchings host->hw_name = "PCI"; 17976bc09063SAdrian Hunter host->ops = chip->fixes && chip->fixes->ops ? 17986bc09063SAdrian Hunter chip->fixes->ops : 17996bc09063SAdrian Hunter &sdhci_pci_ops; 1800659c9bc1SBen Hutchings host->quirks = chip->quirks; 1801659c9bc1SBen Hutchings host->quirks2 = chip->quirks2; 1802659c9bc1SBen Hutchings 1803659c9bc1SBen Hutchings host->irq = pdev->irq; 1804659c9bc1SBen Hutchings 1805c10bc372SAndy Shevchenko ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc)); 1806659c9bc1SBen Hutchings if (ret) { 1807659c9bc1SBen Hutchings dev_err(&pdev->dev, "cannot request region\n"); 1808659c9bc1SBen Hutchings goto cleanup; 1809659c9bc1SBen Hutchings } 1810659c9bc1SBen Hutchings 1811c10bc372SAndy Shevchenko host->ioaddr = pcim_iomap_table(pdev)[bar]; 1812659c9bc1SBen Hutchings 1813659c9bc1SBen Hutchings if (chip->fixes && chip->fixes->probe_slot) { 1814659c9bc1SBen Hutchings ret = chip->fixes->probe_slot(slot); 1815659c9bc1SBen Hutchings if (ret) 1816c10bc372SAndy Shevchenko goto cleanup; 1817659c9bc1SBen Hutchings } 1818659c9bc1SBen Hutchings 1819659c9bc1SBen Hutchings if (gpio_is_valid(slot->rst_n_gpio)) { 1820c10bc372SAndy Shevchenko if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) { 1821659c9bc1SBen Hutchings gpio_direction_output(slot->rst_n_gpio, 1); 1822659c9bc1SBen Hutchings slot->host->mmc->caps |= MMC_CAP_HW_RESET; 1823659c9bc1SBen Hutchings slot->hw_reset = sdhci_pci_gpio_hw_reset; 1824659c9bc1SBen Hutchings } else { 1825659c9bc1SBen Hutchings dev_warn(&pdev->dev, "failed to request rst_n_gpio\n"); 1826659c9bc1SBen Hutchings slot->rst_n_gpio = -EINVAL; 1827659c9bc1SBen Hutchings } 1828659c9bc1SBen Hutchings } 1829659c9bc1SBen Hutchings 1830e92cc35dSAdrian Hunter host->mmc->pm_caps = MMC_PM_KEEP_POWER; 1831659c9bc1SBen Hutchings host->mmc->slotno = slotno; 1832659c9bc1SBen Hutchings host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; 1833659c9bc1SBen Hutchings 1834e92cc35dSAdrian Hunter if (device_can_wakeup(&pdev->dev)) 1835e92cc35dSAdrian Hunter host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; 1836e92cc35dSAdrian Hunter 1837d56ee1ffSAdrian Hunter if (host->mmc->caps & MMC_CAP_CD_WAKE) 1838d56ee1ffSAdrian Hunter device_init_wakeup(&pdev->dev, true); 1839d56ee1ffSAdrian Hunter 18408f743d03SDavid E. Box if (slot->cd_idx >= 0) { 1841cdcefe6bSRajat Jain ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx, 18428f743d03SDavid E. Box slot->cd_override_level, 0, NULL); 1843cdcefe6bSRajat Jain if (ret && ret != -EPROBE_DEFER) 1844cdcefe6bSRajat Jain ret = mmc_gpiod_request_cd(host->mmc, NULL, 1845cdcefe6bSRajat Jain slot->cd_idx, 1846cdcefe6bSRajat Jain slot->cd_override_level, 1847cdcefe6bSRajat Jain 0, NULL); 18488f743d03SDavid E. Box if (ret == -EPROBE_DEFER) 18498f743d03SDavid E. Box goto remove; 18508f743d03SDavid E. Box 18518f743d03SDavid E. Box if (ret) { 1852659c9bc1SBen Hutchings dev_warn(&pdev->dev, "failed to setup card detect gpio\n"); 1853659c9bc1SBen Hutchings slot->cd_idx = -1; 1854659c9bc1SBen Hutchings } 18558f743d03SDavid E. Box } 1856659c9bc1SBen Hutchings 185761c951deSAdrian Hunter if (chip->fixes && chip->fixes->add_host) 185861c951deSAdrian Hunter ret = chip->fixes->add_host(slot); 185961c951deSAdrian Hunter else 1860659c9bc1SBen Hutchings ret = sdhci_add_host(host); 1861659c9bc1SBen Hutchings if (ret) 1862659c9bc1SBen Hutchings goto remove; 1863659c9bc1SBen Hutchings 1864659c9bc1SBen Hutchings sdhci_pci_add_own_cd(slot); 1865659c9bc1SBen Hutchings 1866659c9bc1SBen Hutchings /* 1867659c9bc1SBen Hutchings * Check if the chip needs a separate GPIO for card detect to wake up 1868659c9bc1SBen Hutchings * from runtime suspend. If it is not there, don't allow runtime PM. 1869659c9bc1SBen Hutchings * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure. 1870659c9bc1SBen Hutchings */ 1871659c9bc1SBen Hutchings if (chip->fixes && chip->fixes->own_cd_for_runtime_pm && 1872659c9bc1SBen Hutchings !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0) 1873659c9bc1SBen Hutchings chip->allow_runtime_pm = false; 1874659c9bc1SBen Hutchings 1875659c9bc1SBen Hutchings return slot; 1876659c9bc1SBen Hutchings 1877659c9bc1SBen Hutchings remove: 1878659c9bc1SBen Hutchings if (chip->fixes && chip->fixes->remove_slot) 1879659c9bc1SBen Hutchings chip->fixes->remove_slot(slot, 0); 1880659c9bc1SBen Hutchings 1881659c9bc1SBen Hutchings cleanup: 1882659c9bc1SBen Hutchings if (slot->data && slot->data->cleanup) 1883659c9bc1SBen Hutchings slot->data->cleanup(slot->data); 1884659c9bc1SBen Hutchings 1885659c9bc1SBen Hutchings free: 1886659c9bc1SBen Hutchings sdhci_free_host(host); 1887659c9bc1SBen Hutchings 1888659c9bc1SBen Hutchings return ERR_PTR(ret); 1889659c9bc1SBen Hutchings } 1890659c9bc1SBen Hutchings 1891659c9bc1SBen Hutchings static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) 1892659c9bc1SBen Hutchings { 1893659c9bc1SBen Hutchings int dead; 1894659c9bc1SBen Hutchings u32 scratch; 1895659c9bc1SBen Hutchings 1896659c9bc1SBen Hutchings sdhci_pci_remove_own_cd(slot); 1897659c9bc1SBen Hutchings 1898659c9bc1SBen Hutchings dead = 0; 1899659c9bc1SBen Hutchings scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS); 1900659c9bc1SBen Hutchings if (scratch == (u32)-1) 1901659c9bc1SBen Hutchings dead = 1; 1902659c9bc1SBen Hutchings 1903659c9bc1SBen Hutchings sdhci_remove_host(slot->host, dead); 1904659c9bc1SBen Hutchings 1905659c9bc1SBen Hutchings if (slot->chip->fixes && slot->chip->fixes->remove_slot) 1906659c9bc1SBen Hutchings slot->chip->fixes->remove_slot(slot, dead); 1907659c9bc1SBen Hutchings 1908659c9bc1SBen Hutchings if (slot->data && slot->data->cleanup) 1909659c9bc1SBen Hutchings slot->data->cleanup(slot->data); 1910659c9bc1SBen Hutchings 1911659c9bc1SBen Hutchings sdhci_free_host(slot->host); 1912659c9bc1SBen Hutchings } 1913659c9bc1SBen Hutchings 1914659c9bc1SBen Hutchings static void sdhci_pci_runtime_pm_allow(struct device *dev) 1915659c9bc1SBen Hutchings { 191600884b61SAdrian Hunter pm_suspend_ignore_children(dev, 1); 1917659c9bc1SBen Hutchings pm_runtime_set_autosuspend_delay(dev, 50); 1918659c9bc1SBen Hutchings pm_runtime_use_autosuspend(dev); 191900884b61SAdrian Hunter pm_runtime_allow(dev); 192000884b61SAdrian Hunter /* Stay active until mmc core scans for a card */ 192100884b61SAdrian Hunter pm_runtime_put_noidle(dev); 1922659c9bc1SBen Hutchings } 1923659c9bc1SBen Hutchings 1924659c9bc1SBen Hutchings static void sdhci_pci_runtime_pm_forbid(struct device *dev) 1925659c9bc1SBen Hutchings { 1926659c9bc1SBen Hutchings pm_runtime_forbid(dev); 1927659c9bc1SBen Hutchings pm_runtime_get_noresume(dev); 1928659c9bc1SBen Hutchings } 1929659c9bc1SBen Hutchings 1930659c9bc1SBen Hutchings static int sdhci_pci_probe(struct pci_dev *pdev, 1931659c9bc1SBen Hutchings const struct pci_device_id *ent) 1932659c9bc1SBen Hutchings { 1933659c9bc1SBen Hutchings struct sdhci_pci_chip *chip; 1934659c9bc1SBen Hutchings struct sdhci_pci_slot *slot; 1935659c9bc1SBen Hutchings 1936659c9bc1SBen Hutchings u8 slots, first_bar; 1937659c9bc1SBen Hutchings int ret, i; 1938659c9bc1SBen Hutchings 1939659c9bc1SBen Hutchings BUG_ON(pdev == NULL); 1940659c9bc1SBen Hutchings BUG_ON(ent == NULL); 1941659c9bc1SBen Hutchings 1942659c9bc1SBen Hutchings dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n", 1943659c9bc1SBen Hutchings (int)pdev->vendor, (int)pdev->device, (int)pdev->revision); 1944659c9bc1SBen Hutchings 1945659c9bc1SBen Hutchings ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); 1946659c9bc1SBen Hutchings if (ret) 1947659c9bc1SBen Hutchings return ret; 1948659c9bc1SBen Hutchings 1949659c9bc1SBen Hutchings slots = PCI_SLOT_INFO_SLOTS(slots) + 1; 1950659c9bc1SBen Hutchings dev_dbg(&pdev->dev, "found %d slot(s)\n", slots); 1951659c9bc1SBen Hutchings if (slots == 0) 1952659c9bc1SBen Hutchings return -ENODEV; 1953659c9bc1SBen Hutchings 1954659c9bc1SBen Hutchings BUG_ON(slots > MAX_SLOTS); 1955659c9bc1SBen Hutchings 1956659c9bc1SBen Hutchings ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); 1957659c9bc1SBen Hutchings if (ret) 1958659c9bc1SBen Hutchings return ret; 1959659c9bc1SBen Hutchings 1960659c9bc1SBen Hutchings first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; 1961659c9bc1SBen Hutchings 1962659c9bc1SBen Hutchings if (first_bar > 5) { 1963659c9bc1SBen Hutchings dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n"); 1964659c9bc1SBen Hutchings return -ENODEV; 1965659c9bc1SBen Hutchings } 1966659c9bc1SBen Hutchings 196752ac7acfSAndy Shevchenko ret = pcim_enable_device(pdev); 1968659c9bc1SBen Hutchings if (ret) 1969659c9bc1SBen Hutchings return ret; 1970659c9bc1SBen Hutchings 197152ac7acfSAndy Shevchenko chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); 197252ac7acfSAndy Shevchenko if (!chip) 197352ac7acfSAndy Shevchenko return -ENOMEM; 1974659c9bc1SBen Hutchings 1975659c9bc1SBen Hutchings chip->pdev = pdev; 1976659c9bc1SBen Hutchings chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data; 1977659c9bc1SBen Hutchings if (chip->fixes) { 1978659c9bc1SBen Hutchings chip->quirks = chip->fixes->quirks; 1979659c9bc1SBen Hutchings chip->quirks2 = chip->fixes->quirks2; 1980659c9bc1SBen Hutchings chip->allow_runtime_pm = chip->fixes->allow_runtime_pm; 1981659c9bc1SBen Hutchings } 1982659c9bc1SBen Hutchings chip->num_slots = slots; 1983d38dcad4SAdrian Hunter chip->pm_retune = true; 1984d38dcad4SAdrian Hunter chip->rpm_retune = true; 1985659c9bc1SBen Hutchings 1986659c9bc1SBen Hutchings pci_set_drvdata(pdev, chip); 1987659c9bc1SBen Hutchings 1988659c9bc1SBen Hutchings if (chip->fixes && chip->fixes->probe) { 1989659c9bc1SBen Hutchings ret = chip->fixes->probe(chip); 1990659c9bc1SBen Hutchings if (ret) 199152ac7acfSAndy Shevchenko return ret; 1992659c9bc1SBen Hutchings } 1993659c9bc1SBen Hutchings 1994659c9bc1SBen Hutchings slots = chip->num_slots; /* Quirk may have changed this */ 1995659c9bc1SBen Hutchings 1996659c9bc1SBen Hutchings for (i = 0; i < slots; i++) { 1997659c9bc1SBen Hutchings slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i); 1998659c9bc1SBen Hutchings if (IS_ERR(slot)) { 1999659c9bc1SBen Hutchings for (i--; i >= 0; i--) 2000659c9bc1SBen Hutchings sdhci_pci_remove_slot(chip->slots[i]); 200152ac7acfSAndy Shevchenko return PTR_ERR(slot); 2002659c9bc1SBen Hutchings } 2003659c9bc1SBen Hutchings 2004659c9bc1SBen Hutchings chip->slots[i] = slot; 2005659c9bc1SBen Hutchings } 2006659c9bc1SBen Hutchings 2007659c9bc1SBen Hutchings if (chip->allow_runtime_pm) 2008659c9bc1SBen Hutchings sdhci_pci_runtime_pm_allow(&pdev->dev); 2009659c9bc1SBen Hutchings 2010659c9bc1SBen Hutchings return 0; 2011659c9bc1SBen Hutchings } 2012659c9bc1SBen Hutchings 2013659c9bc1SBen Hutchings static void sdhci_pci_remove(struct pci_dev *pdev) 2014659c9bc1SBen Hutchings { 2015659c9bc1SBen Hutchings int i; 201652ac7acfSAndy Shevchenko struct sdhci_pci_chip *chip = pci_get_drvdata(pdev); 2017659c9bc1SBen Hutchings 2018659c9bc1SBen Hutchings if (chip->allow_runtime_pm) 2019659c9bc1SBen Hutchings sdhci_pci_runtime_pm_forbid(&pdev->dev); 2020659c9bc1SBen Hutchings 2021659c9bc1SBen Hutchings for (i = 0; i < chip->num_slots; i++) 2022659c9bc1SBen Hutchings sdhci_pci_remove_slot(chip->slots[i]); 2023659c9bc1SBen Hutchings } 2024659c9bc1SBen Hutchings 2025659c9bc1SBen Hutchings static struct pci_driver sdhci_driver = { 2026659c9bc1SBen Hutchings .name = "sdhci-pci", 2027659c9bc1SBen Hutchings .id_table = pci_ids, 2028659c9bc1SBen Hutchings .probe = sdhci_pci_probe, 2029659c9bc1SBen Hutchings .remove = sdhci_pci_remove, 2030659c9bc1SBen Hutchings .driver = { 2031659c9bc1SBen Hutchings .pm = &sdhci_pci_pm_ops 2032659c9bc1SBen Hutchings }, 2033659c9bc1SBen Hutchings }; 2034659c9bc1SBen Hutchings 2035659c9bc1SBen Hutchings module_pci_driver(sdhci_driver); 2036659c9bc1SBen Hutchings 2037659c9bc1SBen Hutchings MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 2038659c9bc1SBen Hutchings MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver"); 2039659c9bc1SBen Hutchings MODULE_LICENSE("GPL"); 2040