| /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface |
| * |
| * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| * |
| * Thanks to the following companies for their support: |
| * |
| * - JMicron (hardware and technical support) |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/highmem.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/slab.h> |
| #include <linux/device.h> |
| #include <linux/mmc/host.h> |
| #include <linux/scatterlist.h> |
| #include <linux/io.h> |
| #include <linux/gpio.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/mmc/sdhci-pci-data.h> |
| |
| #include "sdhci.h" |
| |
| /* |
| * PCI device IDs |
| */ |
| #define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809 |
| #define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a |
| |
| /* |
| * PCI registers |
| */ |
| |
| #define PCI_SDHCI_IFPIO 0x00 |
| #define PCI_SDHCI_IFDMA 0x01 |
| #define PCI_SDHCI_IFVENDOR 0x02 |
| |
| #define PCI_SLOT_INFO 0x40 /* 8 bits */ |
| #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7) |
| #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07 |
| |
| #define MAX_SLOTS 8 |
| |
| struct sdhci_pci_chip; |
| struct sdhci_pci_slot; |
| |
| struct sdhci_pci_fixes { |
| unsigned int quirks; |
| unsigned int quirks2; |
| bool allow_runtime_pm; |
| |
| int (*probe) (struct sdhci_pci_chip *); |
| |
| int (*probe_slot) (struct sdhci_pci_slot *); |
| void (*remove_slot) (struct sdhci_pci_slot *, int); |
| |
| int (*suspend) (struct sdhci_pci_chip *); |
| int (*resume) (struct sdhci_pci_chip *); |
| }; |
| |
| struct sdhci_pci_slot { |
| struct sdhci_pci_chip *chip; |
| struct sdhci_host *host; |
| struct sdhci_pci_data *data; |
| |
| int pci_bar; |
| int rst_n_gpio; |
| int cd_gpio; |
| int cd_irq; |
| }; |
| |
| struct sdhci_pci_chip { |
| struct pci_dev *pdev; |
| |
| unsigned int quirks; |
| unsigned int quirks2; |
| bool allow_runtime_pm; |
| const struct sdhci_pci_fixes *fixes; |
| |
| int num_slots; /* Slots on controller */ |
| struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */ |
| }; |
| |
| |
| /*****************************************************************************\ |
| * * |
| * Hardware specific quirk handling * |
| * * |
| \*****************************************************************************/ |
| |
| static int ricoh_probe(struct sdhci_pci_chip *chip) |
| { |
| if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG || |
| chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY) |
| chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; |
| return 0; |
| } |
| |
| static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| slot->host->caps = |
| ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT) |
| & SDHCI_TIMEOUT_CLK_MASK) | |
| |
| ((0x21 << SDHCI_CLOCK_BASE_SHIFT) |
| & SDHCI_CLOCK_BASE_MASK) | |
| |
| SDHCI_TIMEOUT_CLK_UNIT | |
| SDHCI_CAN_VDD_330 | |
| SDHCI_CAN_DO_HISPD | |
| SDHCI_CAN_DO_SDMA; |
| return 0; |
| } |
| |
| static int ricoh_mmc_resume(struct sdhci_pci_chip *chip) |
| { |
| /* Apply a delay to allow controller to settle */ |
| /* Otherwise it becomes confused if card state changed |
| during suspend */ |
| msleep(500); |
| return 0; |
| } |
| |
| static const struct sdhci_pci_fixes sdhci_ricoh = { |
| .probe = ricoh_probe, |
| .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | |
| SDHCI_QUIRK_FORCE_DMA | |
| SDHCI_QUIRK_CLOCK_BEFORE_RESET, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_ricoh_mmc = { |
| .probe_slot = ricoh_mmc_probe_slot, |
| .resume = ricoh_mmc_resume, |
| .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | |
| SDHCI_QUIRK_CLOCK_BEFORE_RESET | |
| SDHCI_QUIRK_NO_CARD_NO_RESET | |
| SDHCI_QUIRK_MISSING_CAPS |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_ene_712 = { |
| .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | |
| SDHCI_QUIRK_BROKEN_DMA, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_ene_714 = { |
| .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | |
| SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS | |
| SDHCI_QUIRK_BROKEN_DMA, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_cafe = { |
| .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER | |
| SDHCI_QUIRK_NO_BUSY_IRQ | |
| SDHCI_QUIRK_BROKEN_CARD_DETECTION | |
| SDHCI_QUIRK_BROKEN_TIMEOUT_VAL, |
| }; |
| |
| static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; |
| return 0; |
| } |
| |
| /* |
| * ADMA operation is disabled for Moorestown platform due to |
| * hardware bugs. |
| */ |
| static int mrst_hc_probe(struct sdhci_pci_chip *chip) |
| { |
| /* |
| * slots number is fixed here for MRST as SDIO3/5 are never used and |
| * have hardware bugs. |
| */ |
| chip->num_slots = 1; |
| return 0; |
| } |
| |
| static int pch_hc_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_RUNTIME |
| |
| static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id) |
| { |
| struct sdhci_pci_slot *slot = dev_id; |
| struct sdhci_host *host = slot->host; |
| |
| mmc_detect_change(host->mmc, msecs_to_jiffies(200)); |
| return IRQ_HANDLED; |
| } |
| |
| static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) |
| { |
| int err, irq, gpio = slot->cd_gpio; |
| |
| slot->cd_gpio = -EINVAL; |
| slot->cd_irq = -EINVAL; |
| |
| if (!gpio_is_valid(gpio)) |
| return; |
| |
| err = gpio_request(gpio, "sd_cd"); |
| if (err < 0) |
| goto out; |
| |
| err = gpio_direction_input(gpio); |
| if (err < 0) |
| goto out_free; |
| |
| irq = gpio_to_irq(gpio); |
| if (irq < 0) |
| goto out_free; |
| |
| err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING | |
| IRQF_TRIGGER_FALLING, "sd_cd", slot); |
| if (err) |
| goto out_free; |
| |
| slot->cd_gpio = gpio; |
| slot->cd_irq = irq; |
| |
| return; |
| |
| out_free: |
| gpio_free(gpio); |
| out: |
| dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n"); |
| } |
| |
| static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot) |
| { |
| if (slot->cd_irq >= 0) |
| free_irq(slot->cd_irq, slot); |
| if (gpio_is_valid(slot->cd_gpio)) |
| gpio_free(slot->cd_gpio); |
| } |
| |
| #else |
| |
| static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) |
| { |
| } |
| |
| static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot) |
| { |
| } |
| |
| #endif |
| |
| static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE; |
| slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC | |
| MMC_CAP2_HC_ERASE_SZ; |
| return 0; |
| } |
| |
| static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE; |
| return 0; |
| } |
| |
| static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = { |
| .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT, |
| .probe_slot = mrst_hc_probe_slot, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = { |
| .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT, |
| .probe = mrst_hc_probe, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = { |
| .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, |
| .allow_runtime_pm = true, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = { |
| .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, |
| .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, |
| .allow_runtime_pm = true, |
| .probe_slot = mfd_sdio_probe_slot, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = { |
| .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, |
| .allow_runtime_pm = true, |
| .probe_slot = mfd_emmc_probe_slot, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = { |
| .quirks = SDHCI_QUIRK_BROKEN_ADMA, |
| .probe_slot = pch_hc_probe_slot, |
| }; |
| |
| /* O2Micro extra registers */ |
| #define O2_SD_LOCK_WP 0xD3 |
| #define O2_SD_MULTI_VCC3V 0xEE |
| #define O2_SD_CLKREQ 0xEC |
| #define O2_SD_CAPS 0xE0 |
| #define O2_SD_ADMA1 0xE2 |
| #define O2_SD_ADMA2 0xE7 |
| #define O2_SD_INF_MOD 0xF1 |
| |
| static int o2_probe(struct sdhci_pci_chip *chip) |
| { |
| int ret; |
| u8 scratch; |
| |
| switch (chip->pdev->device) { |
| case PCI_DEVICE_ID_O2_8220: |
| case PCI_DEVICE_ID_O2_8221: |
| case PCI_DEVICE_ID_O2_8320: |
| case PCI_DEVICE_ID_O2_8321: |
| /* This extra setup is required due to broken ADMA. */ |
| ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); |
| if (ret) |
| return ret; |
| scratch &= 0x7f; |
| pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); |
| |
| /* Set Multi 3 to VCC3V# */ |
| pci_write_config_byte(chip->pdev, O2_SD_MULTI_VCC3V, 0x08); |
| |
| /* Disable CLK_REQ# support after media DET */ |
| ret = pci_read_config_byte(chip->pdev, O2_SD_CLKREQ, &scratch); |
| if (ret) |
| return ret; |
| scratch |= 0x20; |
| pci_write_config_byte(chip->pdev, O2_SD_CLKREQ, scratch); |
| |
| /* Choose capabilities, enable SDMA. We have to write 0x01 |
| * to the capabilities register first to unlock it. |
| */ |
| ret = pci_read_config_byte(chip->pdev, O2_SD_CAPS, &scratch); |
| if (ret) |
| return ret; |
| scratch |= 0x01; |
| pci_write_config_byte(chip->pdev, O2_SD_CAPS, scratch); |
| pci_write_config_byte(chip->pdev, O2_SD_CAPS, 0x73); |
| |
| /* Disable ADMA1/2 */ |
| pci_write_config_byte(chip->pdev, O2_SD_ADMA1, 0x39); |
| pci_write_config_byte(chip->pdev, O2_SD_ADMA2, 0x08); |
| |
| /* Disable the infinite transfer mode */ |
| ret = pci_read_config_byte(chip->pdev, O2_SD_INF_MOD, &scratch); |
| if (ret) |
| return ret; |
| scratch |= 0x08; |
| pci_write_config_byte(chip->pdev, O2_SD_INF_MOD, scratch); |
| |
| /* Lock WP */ |
| ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); |
| if (ret) |
| return ret; |
| scratch |= 0x80; |
| pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); |
| } |
| |
| return 0; |
| } |
| |
| static int jmicron_pmos(struct sdhci_pci_chip *chip, int on) |
| { |
| u8 scratch; |
| int ret; |
| |
| ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch); |
| if (ret) |
| return ret; |
| |
| /* |
| * Turn PMOS on [bit 0], set over current detection to 2.4 V |
| * [bit 1:2] and enable over current debouncing [bit 6]. |
| */ |
| if (on) |
| scratch |= 0x47; |
| else |
| scratch &= ~0x47; |
| |
| ret = pci_write_config_byte(chip->pdev, 0xAE, scratch); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int jmicron_probe(struct sdhci_pci_chip *chip) |
| { |
| int ret; |
| u16 mmcdev = 0; |
| |
| if (chip->pdev->revision == 0) { |
| chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR | |
| SDHCI_QUIRK_32BIT_DMA_SIZE | |
| SDHCI_QUIRK_32BIT_ADMA_SIZE | |
| SDHCI_QUIRK_RESET_AFTER_REQUEST | |
| SDHCI_QUIRK_BROKEN_SMALL_PIO; |
| } |
| |
| /* |
| * JMicron chips can have two interfaces to the same hardware |
| * in order to work around limitations in Microsoft's driver. |
| * We need to make sure we only bind to one of them. |
| * |
| * This code assumes two things: |
| * |
| * 1. The PCI code adds subfunctions in order. |
| * |
| * 2. The MMC interface has a lower subfunction number |
| * than the SD interface. |
| */ |
| if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) |
| mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC; |
| else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD) |
| mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD; |
| |
| if (mmcdev) { |
| struct pci_dev *sd_dev; |
| |
| sd_dev = NULL; |
| while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON, |
| mmcdev, sd_dev)) != NULL) { |
| if ((PCI_SLOT(chip->pdev->devfn) == |
| PCI_SLOT(sd_dev->devfn)) && |
| (chip->pdev->bus == sd_dev->bus)) |
| break; |
| } |
| |
| if (sd_dev) { |
| pci_dev_put(sd_dev); |
| dev_info(&chip->pdev->dev, "Refusing to bind to " |
| "secondary interface.\n"); |
| return -ENODEV; |
| } |
| } |
| |
| /* |
| * JMicron chips need a bit of a nudge to enable the power |
| * output pins. |
| */ |
| ret = jmicron_pmos(chip, 1); |
| if (ret) { |
| dev_err(&chip->pdev->dev, "Failure enabling card power\n"); |
| return ret; |
| } |
| |
| /* quirk for unsable RO-detection on JM388 chips */ |
| if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD || |
| chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) |
| chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT; |
| |
| return 0; |
| } |
| |
| static void jmicron_enable_mmc(struct sdhci_host *host, int on) |
| { |
| u8 scratch; |
| |
| scratch = readb(host->ioaddr + 0xC0); |
| |
| if (on) |
| scratch |= 0x01; |
| else |
| scratch &= ~0x01; |
| |
| writeb(scratch, host->ioaddr + 0xC0); |
| } |
| |
| static int jmicron_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| if (slot->chip->pdev->revision == 0) { |
| u16 version; |
| |
| version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION); |
| version = (version & SDHCI_VENDOR_VER_MASK) >> |
| SDHCI_VENDOR_VER_SHIFT; |
| |
| /* |
| * Older versions of the chip have lots of nasty glitches |
| * in the ADMA engine. It's best just to avoid it |
| * completely. |
| */ |
| if (version < 0xAC) |
| slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA; |
| } |
| |
| /* JM388 MMC doesn't support 1.8V while SD supports it */ |
| if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { |
| slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 | |
| MMC_VDD_29_30 | MMC_VDD_30_31 | |
| MMC_VDD_165_195; /* allow 1.8V */ |
| slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 | |
| MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */ |
| } |
| |
| /* |
| * The secondary interface requires a bit set to get the |
| * interrupts. |
| */ |
| if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || |
| slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) |
| jmicron_enable_mmc(slot->host, 1); |
| |
| slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST; |
| |
| return 0; |
| } |
| |
| static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead) |
| { |
| if (dead) |
| return; |
| |
| if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || |
| slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) |
| jmicron_enable_mmc(slot->host, 0); |
| } |
| |
| static int jmicron_suspend(struct sdhci_pci_chip *chip) |
| { |
| int i; |
| |
| if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || |
| chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { |
| for (i = 0; i < chip->num_slots; i++) |
| jmicron_enable_mmc(chip->slots[i]->host, 0); |
| } |
| |
| return 0; |
| } |
| |
| static int jmicron_resume(struct sdhci_pci_chip *chip) |
| { |
| int ret, i; |
| |
| if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || |
| chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { |
| for (i = 0; i < chip->num_slots; i++) |
| jmicron_enable_mmc(chip->slots[i]->host, 1); |
| } |
| |
| ret = jmicron_pmos(chip, 1); |
| if (ret) { |
| dev_err(&chip->pdev->dev, "Failure enabling card power\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static const struct sdhci_pci_fixes sdhci_o2 = { |
| .probe = o2_probe, |
| }; |
| |
| static const struct sdhci_pci_fixes sdhci_jmicron = { |
| .probe = jmicron_probe, |
| |
| .probe_slot = jmicron_probe_slot, |
| .remove_slot = jmicron_remove_slot, |
| |
| .suspend = jmicron_suspend, |
| .resume = jmicron_resume, |
| }; |
| |
| /* SysKonnect CardBus2SDIO extra registers */ |
| #define SYSKT_CTRL 0x200 |
| #define SYSKT_RDFIFO_STAT 0x204 |
| #define SYSKT_WRFIFO_STAT 0x208 |
| #define SYSKT_POWER_DATA 0x20c |
| #define SYSKT_POWER_330 0xef |
| #define SYSKT_POWER_300 0xf8 |
| #define SYSKT_POWER_184 0xcc |
| #define SYSKT_POWER_CMD 0x20d |
| #define SYSKT_POWER_START (1 << 7) |
| #define SYSKT_POWER_STATUS 0x20e |
| #define SYSKT_POWER_STATUS_OK (1 << 0) |
| #define SYSKT_BOARD_REV 0x210 |
| #define SYSKT_CHIP_REV 0x211 |
| #define SYSKT_CONF_DATA 0x212 |
| #define SYSKT_CONF_DATA_1V8 (1 << 2) |
| #define SYSKT_CONF_DATA_2V5 (1 << 1) |
| #define SYSKT_CONF_DATA_3V3 (1 << 0) |
| |
| static int syskt_probe(struct sdhci_pci_chip *chip) |
| { |
| if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { |
| chip->pdev->class &= ~0x0000FF; |
| chip->pdev->class |= PCI_SDHCI_IFDMA; |
| } |
| return 0; |
| } |
| |
| static int syskt_probe_slot(struct sdhci_pci_slot *slot) |
| { |
| int tm, ps; |
| |
| u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV); |
| u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV); |
| dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, " |
| "board rev %d.%d, chip rev %d.%d\n", |
| board_rev >> 4, board_rev & 0xf, |
| chip_rev >> 4, chip_rev & 0xf); |
| if (chip_rev >= 0x20) |
| slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA; |
| |
| writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA); |
| writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD); |
| udelay(50); |
| tm = 10; /* Wait max 1 ms */ |
| do { |
| ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS); |
| if (ps & SYSKT_POWER_STATUS_OK) |
| break; |
| udelay(100); |
| } while (--tm); |
| if (!tm) { |
| dev_err(&slot->chip->pdev->dev, |
| "power regulator never stabilized"); |
| writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |
| |
| static const struct sdhci_pci_fixes sdhci_syskt = { |
| .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER, |
| .probe = syskt_probe, |
| .probe_slot = syskt_probe_slot, |
| }; |
| |
| static int via_probe(struct sdhci_pci_chip *chip) |
| { |
| if (chip->pdev->revision == 0x10) |
| chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER; |
| |
| return 0; |
| } |
| |
| static const struct sdhci_pci_fixes sdhci_via = { |
| .probe = via_probe, |
| }; |
| |
| static const struct pci_device_id pci_ids[] = { |
| { |
| .vendor = PCI_VENDOR_ID_RICOH, |
| .device = PCI_DEVICE_ID_RICOH_R5C822, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ricoh, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_RICOH, |
| .device = 0x843, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_RICOH, |
| .device = 0xe822, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_RICOH, |
| .device = 0xe823, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_ENE, |
| .device = PCI_DEVICE_ID_ENE_CB712_SD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ene_712, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_ENE, |
| .device = PCI_DEVICE_ID_ENE_CB712_SD_2, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ene_712, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_ENE, |
| .device = PCI_DEVICE_ID_ENE_CB714_SD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ene_714, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_ENE, |
| .device = PCI_DEVICE_ID_ENE_CB714_SD_2, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_ene_714, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_MARVELL, |
| .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_cafe, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_JMICRON, |
| .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_jmicron, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_JMICRON, |
| .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_jmicron, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_JMICRON, |
| .device = PCI_DEVICE_ID_JMICRON_JMB388_SD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_jmicron, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_JMICRON, |
| .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_jmicron, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_SYSKONNECT, |
| .device = 0x8000, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_syskt, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_VIA, |
| .device = 0x95d0, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_via, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MRST_SD0, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MRST_SD1, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MRST_SD2, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MFD_SD, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_O2, |
| .device = PCI_DEVICE_ID_O2_8120, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_o2, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_O2, |
| .device = PCI_DEVICE_ID_O2_8220, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_o2, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_O2, |
| .device = PCI_DEVICE_ID_O2_8221, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_o2, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_O2, |
| .device = PCI_DEVICE_ID_O2_8320, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_o2, |
| }, |
| |
| { |
| .vendor = PCI_VENDOR_ID_O2, |
| .device = PCI_DEVICE_ID_O2_8321, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| .driver_data = (kernel_ulong_t)&sdhci_o2, |
| }, |
| |
| { /* Generic SD host controller */ |
| PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) |
| }, |
| |
| { /* end: all zeroes */ }, |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, pci_ids); |
| |
| /*****************************************************************************\ |
| * * |
| * SDHCI core callbacks * |
| * * |
| \*****************************************************************************/ |
| |
| static int sdhci_pci_enable_dma(struct sdhci_host *host) |
| { |
| struct sdhci_pci_slot *slot; |
| struct pci_dev *pdev; |
| int ret; |
| |
| slot = sdhci_priv(host); |
| pdev = slot->chip->pdev; |
| |
| if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) && |
| ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) && |
| (host->flags & SDHCI_USE_SDMA)) { |
| dev_warn(&pdev->dev, "Will use DMA mode even though HW " |
| "doesn't fully claim to support it.\n"); |
| } |
| |
| ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| if (ret) |
| return ret; |
| |
| pci_set_master(pdev); |
| |
| return 0; |
| } |
| |
| static int sdhci_pci_bus_width(struct sdhci_host *host, int width) |
| { |
| u8 ctrl; |
| |
| ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); |
| |
| switch (width) { |
| case MMC_BUS_WIDTH_8: |
| ctrl |= SDHCI_CTRL_8BITBUS; |
| ctrl &= ~SDHCI_CTRL_4BITBUS; |
| break; |
| case MMC_BUS_WIDTH_4: |
| ctrl |= SDHCI_CTRL_4BITBUS; |
| ctrl &= ~SDHCI_CTRL_8BITBUS; |
| break; |
| default: |
| ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS); |
| break; |
| } |
| |
| sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); |
| |
| return 0; |
| } |
| |
| static void sdhci_pci_hw_reset(struct sdhci_host *host) |
| { |
| struct sdhci_pci_slot *slot = sdhci_priv(host); |
| int rst_n_gpio = slot->rst_n_gpio; |
| |
| if (!gpio_is_valid(rst_n_gpio)) |
| return; |
| gpio_set_value_cansleep(rst_n_gpio, 0); |
| /* For eMMC, minimum is 1us but give it 10us for good measure */ |
| udelay(10); |
| gpio_set_value_cansleep(rst_n_gpio, 1); |
| /* For eMMC, minimum is 200us but give it 300us for good measure */ |
| usleep_range(300, 1000); |
| } |
| |
| static const struct sdhci_ops sdhci_pci_ops = { |
| .enable_dma = sdhci_pci_enable_dma, |
| .platform_bus_width = sdhci_pci_bus_width, |
| .hw_reset = sdhci_pci_hw_reset, |
| }; |
| |
| /*****************************************************************************\ |
| * * |
| * Suspend/resume * |
| * * |
| \*****************************************************************************/ |
| |
| #ifdef CONFIG_PM |
| |
| static int sdhci_pci_suspend(struct device *dev) |
| { |
| struct pci_dev *pdev = to_pci_dev(dev); |
| struct sdhci_pci_chip *chip; |
| struct sdhci_pci_slot *slot; |
| mmc_pm_flag_t slot_pm_flags; |
| mmc_pm_flag_t pm_flags = 0; |
| int i, ret; |
| |
| chip = pci_get_drvdata(pdev); |
| if (!chip) |
| return 0; |
| |
| for (i = 0; i < chip->num_slots; i++) { |
| slot = chip->slots[i]; |
| if (!slot) |
| continue; |
| |
| ret = sdhci_suspend_host(slot->host); |
| |
| if (ret) |
| goto err_pci_suspend; |
| |
| slot_pm_flags = slot->host->mmc->pm_flags; |
| if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ) |
| sdhci_enable_irq_wakeups(slot->host); |
| |
| pm_flags |= slot_pm_flags; |
| } |
| |
| if (chip->fixes && chip->fixes->suspend) { |
| ret = chip->fixes->suspend(chip); |
| if (ret) |
| goto err_pci_suspend; |
| } |
| |
| pci_save_state(pdev); |
| if (pm_flags & MMC_PM_KEEP_POWER) { |
| if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) { |
| pci_pme_active(pdev, true); |
| pci_enable_wake(pdev, PCI_D3hot, 1); |
| } |
| pci_set_power_state(pdev, PCI_D3hot); |
| } else { |
| pci_enable_wake(pdev, PCI_D3hot, 0); |
| pci_disable_device(pdev); |
| pci_set_power_state(pdev, PCI_D3hot); |
| } |
| |
| return 0; |
| |
| err_pci_suspend: |
| while (--i >= 0) |
| sdhci_resume_host(chip->slots[i]->host); |
| return ret; |
| } |
| |
| static int sdhci_pci_resume(struct device *dev) |
| { |
| struct pci_dev *pdev = to_pci_dev(dev); |
| struct sdhci_pci_chip *chip; |
| struct sdhci_pci_slot *slot; |
| int i, ret; |
| |
| chip = pci_get_drvdata(pdev); |
| if (!chip) |
| return 0; |
| |
| pci_set_power_state(pdev, PCI_D0); |
| pci_restore_state(pdev); |
| ret = pci_enable_device(pdev); |
| if (ret) |
| return ret; |
| |
| if (chip->fixes && chip->fixes->resume) { |
| ret = chip->fixes->resume(chip); |
| if (ret) |
| return ret; |
| } |
| |
| for (i = 0; i < chip->num_slots; i++) { |
| slot = chip->slots[i]; |
| if (!slot) |
| continue; |
| |
| ret = sdhci_resume_host(slot->host); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| #else /* CONFIG_PM */ |
| |
| #define sdhci_pci_suspend NULL |
| #define sdhci_pci_resume NULL |
| |
| #endif /* CONFIG_PM */ |
| |
| #ifdef CONFIG_PM_RUNTIME |
| |
| static int sdhci_pci_runtime_suspend(struct device *dev) |
| { |
| struct pci_dev *pdev = container_of(dev, struct pci_dev, dev); |
| struct sdhci_pci_chip *chip; |
| struct sdhci_pci_slot *slot; |
| int i, ret; |
| |
| chip = pci_get_drvdata(pdev); |
| if (!chip) |
| return 0; |
| |
| for (i = 0; i < chip->num_slots; i++) { |
| slot = chip->slots[i]; |
| if (!slot) |
| continue; |
| |
| ret = sdhci_runtime_suspend_host(slot->host); |
| |
| if (ret) |
| goto err_pci_runtime_suspend; |
| } |
| |
| if (chip->fixes && chip->fixes->suspend) { |
| ret = chip->fixes->suspend(chip); |
| if (ret) |
| goto err_pci_runtime_suspend; |
| } |
| |
| return 0; |
| |
| err_pci_runtime_suspend: |
| while (--i >= 0) |
| sdhci_runtime_resume_host(chip->slots[i]->host); |
| return ret; |
| } |
| |
| static int sdhci_pci_runtime_resume(struct device *dev) |
| { |
| struct pci_dev *pdev = container_of(dev, struct pci_dev, dev); |
| struct sdhci_pci_chip *chip; |
| struct sdhci_pci_slot *slot; |
| int i, ret; |
| |
| chip = pci_get_drvdata(pdev); |
| if (!chip) |
| return 0; |
| |
| if (chip->fixes && chip->fixes->resume) { |
| ret = chip->fixes->resume(chip); |
| if (ret) |
| return ret; |
| } |
| |
| for (i = 0; i < chip->num_slots; i++) { |
| slot = chip->slots[i]; |
| if (!slot) |
| continue; |
| |
| ret = sdhci_runtime_resume_host(slot->host); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int sdhci_pci_runtime_idle(struct device *dev) |
| { |
| return 0; |
| } |
| |
| #else |
| |
| #define sdhci_pci_runtime_suspend NULL |
| #define sdhci_pci_runtime_resume NULL |
| #define sdhci_pci_runtime_idle NULL |
| |
| #endif |
| |
| static const struct dev_pm_ops sdhci_pci_pm_ops = { |
| .suspend = sdhci_pci_suspend, |
| .resume = sdhci_pci_resume, |
| .runtime_suspend = sdhci_pci_runtime_suspend, |
| .runtime_resume = sdhci_pci_runtime_resume, |
| .runtime_idle = sdhci_pci_runtime_idle, |
| }; |
| |
| /*****************************************************************************\ |
| * * |
| * Device probing/removal * |
| * * |
| \*****************************************************************************/ |
| |
| static struct sdhci_pci_slot *sdhci_pci_probe_slot( |
| struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar, |
| int slotno) |
| { |
| struct sdhci_pci_slot *slot; |
| struct sdhci_host *host; |
| int ret, bar = first_bar + slotno; |
| |
| if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { |
| dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); |
| return ERR_PTR(-ENODEV); |
| } |
| |
| if (pci_resource_len(pdev, bar) < 0x100) { |
| dev_err(&pdev->dev, "Invalid iomem size. You may " |
| "experience problems.\n"); |
| } |
| |
| if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { |
| dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n"); |
| return ERR_PTR(-ENODEV); |
| } |
| |
| if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { |
| dev_err(&pdev->dev, "Unknown interface. Aborting.\n"); |
| return ERR_PTR(-ENODEV); |
| } |
| |
| host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot)); |
| if (IS_ERR(host)) { |
| dev_err(&pdev->dev, "cannot allocate host\n"); |
| return ERR_CAST(host); |
| } |
| |
| slot = sdhci_priv(host); |
| |
| slot->chip = chip; |
| slot->host = host; |
| slot->pci_bar = bar; |
| slot->rst_n_gpio = -EINVAL; |
| slot->cd_gpio = -EINVAL; |
| |
| /* Retrieve platform data if there is any */ |
| if (*sdhci_pci_get_data) |
| slot->data = sdhci_pci_get_data(pdev, slotno); |
| |
| if (slot->data) { |
| if (slot->data->setup) { |
| ret = slot->data->setup(slot->data); |
| if (ret) { |
| dev_err(&pdev->dev, "platform setup failed\n"); |
| goto free; |
| } |
| } |
| slot->rst_n_gpio = slot->data->rst_n_gpio; |
| slot->cd_gpio = slot->data->cd_gpio; |
| } |
| |
| host->hw_name = "PCI"; |
| host->ops = &sdhci_pci_ops; |
| host->quirks = chip->quirks; |
| host->quirks2 = chip->quirks2; |
| |
| host->irq = pdev->irq; |
| |
| ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc)); |
| if (ret) { |
| dev_err(&pdev->dev, "cannot request region\n"); |
| goto cleanup; |
| } |
| |
| host->ioaddr = pci_ioremap_bar(pdev, bar); |
| if (!host->ioaddr) { |
| dev_err(&pdev->dev, "failed to remap registers\n"); |
| ret = -ENOMEM; |
| goto release; |
| } |
| |
| if (chip->fixes && chip->fixes->probe_slot) { |
| ret = chip->fixes->probe_slot(slot); |
| if (ret) |
| goto unmap; |
| } |
| |
| if (gpio_is_valid(slot->rst_n_gpio)) { |
| if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) { |
| gpio_direction_output(slot->rst_n_gpio, 1); |
| slot->host->mmc->caps |= MMC_CAP_HW_RESET; |
| } else { |
| dev_warn(&pdev->dev, "failed to request rst_n_gpio\n"); |
| slot->rst_n_gpio = -EINVAL; |
| } |
| } |
| |
| host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ; |
| host->mmc->slotno = slotno; |
| |
| ret = sdhci_add_host(host); |
| if (ret) |
| goto remove; |
| |
| sdhci_pci_add_own_cd(slot); |
| |
| return slot; |
| |
| remove: |
| if (gpio_is_valid(slot->rst_n_gpio)) |
| gpio_free(slot->rst_n_gpio); |
| |
| if (chip->fixes && chip->fixes->remove_slot) |
| chip->fixes->remove_slot(slot, 0); |
| |
| unmap: |
| iounmap(host->ioaddr); |
| |
| release: |
| pci_release_region(pdev, bar); |
| |
| cleanup: |
| if (slot->data && slot->data->cleanup) |
| slot->data->cleanup(slot->data); |
| |
| free: |
| sdhci_free_host(host); |
| |
| return ERR_PTR(ret); |
| } |
| |
| static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) |
| { |
| int dead; |
| u32 scratch; |
| |
| sdhci_pci_remove_own_cd(slot); |
| |
| dead = 0; |
| scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS); |
| if (scratch == (u32)-1) |
| dead = 1; |
| |
| sdhci_remove_host(slot->host, dead); |
| |
| if (gpio_is_valid(slot->rst_n_gpio)) |
| gpio_free(slot->rst_n_gpio); |
| |
| if (slot->chip->fixes && slot->chip->fixes->remove_slot) |
| slot->chip->fixes->remove_slot(slot, dead); |
| |
| if (slot->data && slot->data->cleanup) |
| slot->data->cleanup(slot->data); |
| |
| pci_release_region(slot->chip->pdev, slot->pci_bar); |
| |
| sdhci_free_host(slot->host); |
| } |
| |
| static void sdhci_pci_runtime_pm_allow(struct device *dev) |
| { |
| pm_runtime_put_noidle(dev); |
| pm_runtime_allow(dev); |
| pm_runtime_set_autosuspend_delay(dev, 50); |
| pm_runtime_use_autosuspend(dev); |
| pm_suspend_ignore_children(dev, 1); |
| } |
| |
| static void sdhci_pci_runtime_pm_forbid(struct device *dev) |
| { |
| pm_runtime_forbid(dev); |
| pm_runtime_get_noresume(dev); |
| } |
| |
| static int sdhci_pci_probe(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct sdhci_pci_chip *chip; |
| struct sdhci_pci_slot *slot; |
| |
| u8 slots, first_bar; |
| int ret, i; |
| |
| BUG_ON(pdev == NULL); |
| BUG_ON(ent == NULL); |
| |
| dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n", |
| (int)pdev->vendor, (int)pdev->device, (int)pdev->revision); |
| |
| ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); |
| if (ret) |
| return ret; |
| |
| slots = PCI_SLOT_INFO_SLOTS(slots) + 1; |
| dev_dbg(&pdev->dev, "found %d slot(s)\n", slots); |
| if (slots == 0) |
| return -ENODEV; |
| |
| BUG_ON(slots > MAX_SLOTS); |
| |
| ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); |
| if (ret) |
| return ret; |
| |
| first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; |
| |
| if (first_bar > 5) { |
| dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n"); |
| return -ENODEV; |
| } |
| |
| ret = pci_enable_device(pdev); |
| if (ret) |
| return ret; |
| |
| chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL); |
| if (!chip) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| chip->pdev = pdev; |
| chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data; |
| if (chip->fixes) { |
| chip->quirks = chip->fixes->quirks; |
| chip->quirks2 = chip->fixes->quirks2; |
| chip->allow_runtime_pm = chip->fixes->allow_runtime_pm; |
| } |
| chip->num_slots = slots; |
| |
| pci_set_drvdata(pdev, chip); |
| |
| if (chip->fixes && chip->fixes->probe) { |
| ret = chip->fixes->probe(chip); |
| if (ret) |
| goto free; |
| } |
| |
| slots = chip->num_slots; /* Quirk may have changed this */ |
| |
| for (i = 0; i < slots; i++) { |
| slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i); |
| if (IS_ERR(slot)) { |
| for (i--; i >= 0; i--) |
| sdhci_pci_remove_slot(chip->slots[i]); |
| ret = PTR_ERR(slot); |
| goto free; |
| } |
| |
| chip->slots[i] = slot; |
| } |
| |
| if (chip->allow_runtime_pm) |
| sdhci_pci_runtime_pm_allow(&pdev->dev); |
| |
| return 0; |
| |
| free: |
| pci_set_drvdata(pdev, NULL); |
| kfree(chip); |
| |
| err: |
| pci_disable_device(pdev); |
| return ret; |
| } |
| |
| static void sdhci_pci_remove(struct pci_dev *pdev) |
| { |
| int i; |
| struct sdhci_pci_chip *chip; |
| |
| chip = pci_get_drvdata(pdev); |
| |
| if (chip) { |
| if (chip->allow_runtime_pm) |
| sdhci_pci_runtime_pm_forbid(&pdev->dev); |
| |
| for (i = 0; i < chip->num_slots; i++) |
| sdhci_pci_remove_slot(chip->slots[i]); |
| |
| pci_set_drvdata(pdev, NULL); |
| kfree(chip); |
| } |
| |
| pci_disable_device(pdev); |
| } |
| |
| static struct pci_driver sdhci_driver = { |
| .name = "sdhci-pci", |
| .id_table = pci_ids, |
| .probe = sdhci_pci_probe, |
| .remove = sdhci_pci_remove, |
| .driver = { |
| .pm = &sdhci_pci_pm_ops |
| }, |
| }; |
| |
| module_pci_driver(sdhci_driver); |
| |
| MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); |
| MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver"); |
| MODULE_LICENSE("GPL"); |