+++ /dev/null
-/* 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/slot-gpio.h>
-#include <linux/mmc/sdhci-pci-data.h>
-
-#include "sdhci.h"
-#include "sdhci-pci.h"
-#include "sdhci-pci-o2micro.h"
-
-/*****************************************************************************\
- * *
- * 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 const struct sdhci_pci_fixes sdhci_intel_qrk = {
- .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
-};
-
-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
-
-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,
- .own_cd_for_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,
-};
-
-static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
-{
- u8 reg;
-
- reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
- reg |= 0x10;
- sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
- /* For eMMC, minimum is 1us but give it 9us for good measure */
- udelay(9);
- reg &= ~0x10;
- sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
- /* For eMMC, minimum is 200us but give it 300us for good measure */
- usleep_range(300, 1000);
-}
-
-static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
-{
- slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
- MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
- MMC_CAP_BUS_WIDTH_TEST |
- MMC_CAP_WAIT_WHILE_BUSY;
- slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
- slot->hw_reset = sdhci_pci_int_hw_reset;
- if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
- slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
- return 0;
-}
-
-static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
-{
- slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
- MMC_CAP_BUS_WIDTH_TEST |
- MMC_CAP_WAIT_WHILE_BUSY;
- return 0;
-}
-
-static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
-{
- slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST |
- MMC_CAP_WAIT_WHILE_BUSY;
- slot->cd_con_id = NULL;
- slot->cd_idx = 0;
- slot->cd_override_level = true;
- return 0;
-}
-
-static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
- .allow_runtime_pm = true,
- .probe_slot = byt_emmc_probe_slot,
- .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
- .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
- SDHCI_QUIRK2_STOP_WITH_TC,
-};
-
-static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
- .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
- .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
- SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
- .allow_runtime_pm = true,
- .probe_slot = byt_sdio_probe_slot,
-};
-
-static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
- .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
- .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
- SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
- SDHCI_QUIRK2_STOP_WITH_TC,
- .allow_runtime_pm = true,
- .own_cd_for_runtime_pm = true,
- .probe_slot = byt_sd_probe_slot,
-};
-
-/* Define Host controllers for Intel Merrifield platform */
-#define INTEL_MRFL_EMMC_0 0
-#define INTEL_MRFL_EMMC_1 1
-
-static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot)
-{
- if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_0) &&
- (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_1))
- /* SD support is not ready yet */
- return -ENODEV;
-
- slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
- MMC_CAP_1_8V_DDR;
-
- return 0;
-}
-
-static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = {
- .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
- .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
- SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
- .allow_runtime_pm = true,
- .probe_slot = intel_mrfl_mmc_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 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 = sdhci_pci_o2_probe,
- .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
- .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
- .probe_slot = sdhci_pci_o2_probe_slot,
- .resume = sdhci_pci_o2_resume,
-};
-
-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 int rtsx_probe_slot(struct sdhci_pci_slot *slot)
-{
- slot->host->mmc->caps2 |= MMC_CAP2_HS200;
- return 0;
-}
-
-static const struct sdhci_pci_fixes sdhci_rtsx = {
- .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
- SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
- SDHCI_QUIRK2_BROKEN_DDR50,
- .probe_slot = rtsx_probe_slot,
-};
-
-static int amd_probe(struct sdhci_pci_chip *chip)
-{
- struct pci_dev *smbus_dev;
-
- smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
- PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
-
- if (smbus_dev && (smbus_dev->revision < 0x51)) {
- chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
- chip->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
- }
-
- return 0;
-}
-
-static const struct sdhci_pci_fixes sdhci_amd = {
- .probe = amd_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_REALTEK,
- .device = 0x5250,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_rtsx,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_QRK_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_qrk,
- },
-
- {
- .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_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BYT_EMMC,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BYT_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BYT_EMMC2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BSW_EMMC,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BSW_SDIO,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BSW_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_CLV_SDIO0,
- .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_CLV_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_CLV_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_CLV_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_CLV_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_MRFL_MMC,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_mrfl_mmc,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_SPT_EMMC,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_SPT_SDIO,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
- },
-
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_SPT_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
- },
-
- {
- .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,
- },
-
- {
- .vendor = PCI_VENDOR_ID_O2,
- .device = PCI_DEVICE_ID_O2_FUJIN2,
- .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_SDS0,
- .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_SDS1,
- .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_SEABIRD0,
- .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_SEABIRD1,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_o2,
- },
- {
- .vendor = PCI_VENDOR_ID_AMD,
- .device = PCI_ANY_ID,
- .class = PCI_CLASS_SYSTEM_SDHCI << 8,
- .class_mask = 0xFFFF00,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = (kernel_ulong_t)&sdhci_amd,
- },
- { /* 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 = -1;
-
- 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");
- }
-
- if (host->flags & SDHCI_USE_64_BIT_DMA) {
- if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA) {
- host->flags &= ~SDHCI_USE_64_BIT_DMA;
- } else {
- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
- if (ret)
- dev_warn(&pdev->dev, "Failed to set 64-bit DMA mask\n");
- }
- }
- if (ret)
- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- pci_set_master(pdev);
-
- return 0;
-}
-
-static void sdhci_pci_set_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);
-}
-
-static void sdhci_pci_gpio_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 void sdhci_pci_hw_reset(struct sdhci_host *host)
-{
- struct sdhci_pci_slot *slot = sdhci_priv(host);
-
- if (slot->hw_reset)
- slot->hw_reset(host);
-}
-
-static const struct sdhci_ops sdhci_pci_ops = {
- .set_clock = sdhci_set_clock,
- .enable_dma = sdhci_pci_enable_dma,
- .set_bus_width = sdhci_pci_set_bus_width,
- .reset = sdhci_reset,
- .set_uhs_signaling = sdhci_set_uhs_signaling,
- .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;
- }
-
- if (pm_flags & MMC_PM_KEEP_POWER) {
- if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
- device_init_wakeup(dev, true);
- else
- device_init_wakeup(dev, false);
- } else
- device_init_wakeup(dev, false);
-
- 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;
-
- 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;
-}
-
-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;
-}
-
-#else /* CONFIG_PM */
-
-#define sdhci_pci_suspend NULL
-#define sdhci_pci_resume NULL
-
-#endif /* CONFIG_PM */
-
-static const struct dev_pm_ops sdhci_pci_pm_ops = {
- .suspend = sdhci_pci_suspend,
- .resume = sdhci_pci_resume,
- SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
- sdhci_pci_runtime_resume, NULL)
-};
-
-/*****************************************************************************\
- * *
- * 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;
- slot->cd_idx = -1;
-
- /* 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;
- slot->hw_reset = sdhci_pci_gpio_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;
- host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
-
- if (slot->cd_idx >= 0 &&
- mmc_gpiod_request_cd(host->mmc, slot->cd_con_id, slot->cd_idx,
- slot->cd_override_level, 0, NULL)) {
- dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
- slot->cd_idx = -1;
- }
-
- ret = sdhci_add_host(host);
- if (ret)
- goto remove;
-
- sdhci_pci_add_own_cd(slot);
-
- /*
- * Check if the chip needs a separate GPIO for card detect to wake up
- * from runtime suspend. If it is not there, don't allow runtime PM.
- * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
- */
- if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
- !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
- chip->allow_runtime_pm = false;
-
- 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");
Code Review / kvmfornfv.git / blobdiff