diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-pci-core.c')
-rw-r--r-- | drivers/mmc/host/sdhci-pci-core.c | 116 |
1 files changed, 80 insertions, 36 deletions
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index 897cfd24ca2e..1d9e00a00e9f 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -32,6 +32,14 @@ #include "sdhci-pci.h" #include "sdhci-pci-o2micro.h" +static int sdhci_pci_enable_dma(struct sdhci_host *host); +static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width); +static void sdhci_pci_hw_reset(struct sdhci_host *host); +static int sdhci_pci_select_drive_strength(struct sdhci_host *host, + struct mmc_card *card, + unsigned int max_dtr, int host_drv, + int card_drv, int *drv_type); + /*****************************************************************************\ * * * Hardware specific quirk handling * @@ -156,7 +164,7 @@ static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) if (!gpio_is_valid(gpio)) return; - err = gpio_request(gpio, "sd_cd"); + err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd"); if (err < 0) goto out; @@ -179,7 +187,7 @@ static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) return; out_free: - gpio_free(gpio); + devm_gpio_free(&slot->chip->pdev->dev, gpio); out: dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n"); } @@ -188,8 +196,6 @@ 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 @@ -356,6 +362,7 @@ 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_CMD_DURING_TFR | MMC_CAP_WAIT_WHILE_BUSY; slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ; slot->hw_reset = sdhci_pci_int_hw_reset; @@ -391,6 +398,45 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot) return 0; } +#define SDHCI_INTEL_PWR_TIMEOUT_CNT 20 +#define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100 + +static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode, + unsigned short vdd) +{ + int cntr; + u8 reg; + + sdhci_set_power(host, mode, vdd); + + if (mode == MMC_POWER_OFF) + return; + + /* + * Bus power might not enable after D3 -> D0 transition due to the + * present state not yet having propagated. Retry for up to 2ms. + */ + for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) { + reg = sdhci_readb(host, SDHCI_POWER_CONTROL); + if (reg & SDHCI_POWER_ON) + break; + udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY); + reg |= SDHCI_POWER_ON; + sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); + } +} + +static const struct sdhci_ops sdhci_intel_byt_ops = { + .set_clock = sdhci_set_clock, + .set_power = sdhci_intel_set_power, + .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, + .select_drive_strength = sdhci_pci_select_drive_strength, +}; + static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { .allow_runtime_pm = true, .probe_slot = byt_emmc_probe_slot, @@ -398,6 +444,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 | SDHCI_QUIRK2_STOP_WITH_TC, + .ops = &sdhci_intel_byt_ops, }; static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = { @@ -406,6 +453,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = { SDHCI_QUIRK2_PRESET_VALUE_BROKEN, .allow_runtime_pm = true, .probe_slot = byt_sdio_probe_slot, + .ops = &sdhci_intel_byt_ops, }; static const struct sdhci_pci_fixes sdhci_intel_byt_sd = { @@ -416,22 +464,36 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = { .allow_runtime_pm = true, .own_cd_for_runtime_pm = true, .probe_slot = byt_sd_probe_slot, + .ops = &sdhci_intel_byt_ops, }; /* Define Host controllers for Intel Merrifield platform */ #define INTEL_MRFLD_EMMC_0 0 #define INTEL_MRFLD_EMMC_1 1 +#define INTEL_MRFLD_SD 2 +#define INTEL_MRFLD_SDIO 3 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot) { - if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFLD_EMMC_0) && - (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFLD_EMMC_1)) - /* SD support is not ready yet */ + unsigned int func = PCI_FUNC(slot->chip->pdev->devfn); + + switch (func) { + case INTEL_MRFLD_EMMC_0: + case INTEL_MRFLD_EMMC_1: + slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE | + MMC_CAP_8_BIT_DATA | + MMC_CAP_1_8V_DDR; + break; + case INTEL_MRFLD_SD: + slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; + break; + case INTEL_MRFLD_SDIO: + slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE | + MMC_CAP_POWER_OFF_CARD; + break; + default: return -ENODEV; - - slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | - MMC_CAP_1_8V_DDR; - + } return 0; } @@ -1615,7 +1677,6 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( slot->chip = chip; slot->host = host; - slot->pci_bar = bar; slot->rst_n_gpio = -EINVAL; slot->cd_gpio = -EINVAL; slot->cd_idx = -1; @@ -1637,33 +1698,30 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( } host->hw_name = "PCI"; - host->ops = &sdhci_pci_ops; + host->ops = chip->fixes && chip->fixes->ops ? + chip->fixes->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)); + ret = pcim_iomap_regions(pdev, BIT(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; - } + host->ioaddr = pcim_iomap_table(pdev)[bar]; if (chip->fixes && chip->fixes->probe_slot) { ret = chip->fixes->probe_slot(slot); if (ret) - goto unmap; + goto cleanup; } if (gpio_is_valid(slot->rst_n_gpio)) { - if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) { + if (!devm_gpio_request(&pdev->dev, 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; @@ -1702,18 +1760,9 @@ static struct sdhci_pci_slot *sdhci_pci_probe_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); @@ -1738,17 +1787,12 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) 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); } |