diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-06-01 12:10:07 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-06-20 10:30:38 +0200 |
| commit | bc55dcd822f98cd7c170d0aeac4ed4fb79c86bda (patch) | |
| tree | 7375dbd4a8fb4187ef5eb51dd958f22ea088f64f /drivers/mmc/host/sdhci-pci-core.c | |
| parent | 87317c4d28a762510b273601f00e77423bb3518f (diff) | |
| download | linux-bc55dcd822f98cd7c170d0aeac4ed4fb79c86bda.tar.bz2 | |
mmc: sdhci-pci: Add support for Intel CNP
Add PCI ids and enhanced strobe support for Intel CNP. This is combined
with GLK due to the pending CMDQ support which they both share.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-pci-core.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-pci-core.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index b3ddc32fa00b..8fa84a013be4 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -543,6 +543,23 @@ static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode, } } +#define INTEL_HS400_ES_REG 0x78 +#define INTEL_HS400_ES_BIT BIT(0) + +static void intel_hs400_enhanced_strobe(struct mmc_host *mmc, + struct mmc_ios *ios) +{ + struct sdhci_host *host = mmc_priv(mmc); + u32 val; + + val = sdhci_readl(host, INTEL_HS400_ES_REG); + if (ios->enhanced_strobe) + val |= INTEL_HS400_ES_BIT; + else + val &= ~INTEL_HS400_ES_BIT; + sdhci_writel(host, val, INTEL_HS400_ES_REG); +} + static const struct sdhci_ops sdhci_intel_byt_ops = { .set_clock = sdhci_set_clock, .set_power = sdhci_intel_set_power, @@ -579,6 +596,19 @@ static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) return 0; } +static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot) +{ + int ret = byt_emmc_probe_slot(slot); + + if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) { + slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES, + slot->host->mmc_host_ops.hs400_enhanced_strobe = + intel_hs400_enhanced_strobe; + } + + return ret; +} + #ifdef CONFIG_ACPI static int ni_set_max_freq(struct sdhci_pci_slot *slot) { @@ -654,6 +684,17 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { .priv_size = sizeof(struct intel_host), }; +static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = { + .allow_runtime_pm = true, + .probe_slot = glk_emmc_probe_slot, + .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, + .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 | + SDHCI_QUIRK2_STOP_WITH_TC, + .ops = &sdhci_intel_byt_ops, + .priv_size = sizeof(struct intel_host), +}; + static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON | @@ -1225,9 +1266,12 @@ static const struct pci_device_id pci_ids[] = { SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc), SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio), SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd), - SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_byt_emmc), + SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc), SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio), SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd), + SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc), + SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd), + SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd), SDHCI_PCI_DEVICE(O2, 8120, o2), SDHCI_PCI_DEVICE(O2, 8220, o2), SDHCI_PCI_DEVICE(O2, 8221, o2), |