diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci-pci-gli.c | 54 |
1 files changed, 29 insertions, 25 deletions
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c index 33d7039c1916..3b5b5c139206 100644 --- a/drivers/mmc/host/sdhci-pci-gli.c +++ b/drivers/mmc/host/sdhci-pci-gli.c @@ -801,6 +801,32 @@ static void gl9763e_hs400_enhanced_strobe(struct mmc_host *mmc, sdhci_writel(host, val, SDHCI_GLI_9763E_HS400_ES_REG); } +static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, + bool enable) +{ + struct pci_dev *pdev = slot->chip->pdev; + u32 value; + + pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); + value &= ~GLI_9763E_VHS_REV; + value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W); + pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); + + pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value); + + if (enable) + value &= ~GLI_9763E_CFG_LPSN_DIS; + else + value |= GLI_9763E_CFG_LPSN_DIS; + + pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value); + + pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); + value &= ~GLI_9763E_VHS_REV; + value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R); + pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); +} + static void sdhci_set_gl9763e_signaling(struct sdhci_host *host, unsigned int timing) { @@ -909,6 +935,9 @@ static int gl9763e_add_host(struct sdhci_pci_slot *slot) if (ret) goto cleanup; + /* Disable LPM negotiation to avoid entering L1 state. */ + gl9763e_set_low_power_negotiation(slot, false); + return 0; cleanup: @@ -960,31 +989,6 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot) } #ifdef CONFIG_PM -static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, bool enable) -{ - struct pci_dev *pdev = slot->chip->pdev; - u32 value; - - pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); - value &= ~GLI_9763E_VHS_REV; - value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W); - pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); - - pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value); - - if (enable) - value &= ~GLI_9763E_CFG_LPSN_DIS; - else - value |= GLI_9763E_CFG_LPSN_DIS; - - pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value); - - pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); - value &= ~GLI_9763E_VHS_REV; - value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R); - pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); -} - static int gl9763e_runtime_suspend(struct sdhci_pci_chip *chip) { struct sdhci_pci_slot *slot = chip->slots[0]; |