diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-pci-gli.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-pci-gli.c | 150 |
1 files changed, 148 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c index 5da2b06d84ae..9887485a4134 100644 --- a/drivers/mmc/host/sdhci-pci-gli.c +++ b/drivers/mmc/host/sdhci-pci-gli.c @@ -14,6 +14,7 @@ #include <linux/delay.h> #include "sdhci.h" #include "sdhci-pci.h" +#include "cqhci.h" /* Genesys Logic extra registers */ #define SDHCI_GLI_9750_WT 0x800 @@ -81,9 +82,16 @@ #define GLI_9763E_VHS_REV_R 0x0 #define GLI_9763E_VHS_REV_M 0x1 #define GLI_9763E_VHS_REV_W 0x2 +#define PCIE_GLI_9763E_MB 0x888 +#define GLI_9763E_MB_CMDQ_OFF BIT(19) #define PCIE_GLI_9763E_SCR 0x8E0 #define GLI_9763E_SCR_AXI_REQ BIT(9) +#define SDHCI_GLI_9763E_CQE_BASE_ADDR 0x200 +#define GLI_9763E_CQE_TRNS_MODE (SDHCI_TRNS_MULTI | \ + SDHCI_TRNS_BLK_CNT_EN | \ + SDHCI_TRNS_DMA) + #define PCI_GLI_9755_WT 0x800 #define PCI_GLI_9755_WT_EN BIT(0) #define GLI_9755_WT_EN_ON 0x1 @@ -578,6 +586,30 @@ static int sdhci_pci_gli_resume(struct sdhci_pci_chip *chip) return sdhci_pci_resume_host(chip); } + +static int sdhci_cqhci_gli_resume(struct sdhci_pci_chip *chip) +{ + struct sdhci_pci_slot *slot = chip->slots[0]; + int ret; + + ret = sdhci_pci_gli_resume(chip); + if (ret) + return ret; + + return cqhci_resume(slot->host->mmc); +} + +static int sdhci_cqhci_gli_suspend(struct sdhci_pci_chip *chip) +{ + struct sdhci_pci_slot *slot = chip->slots[0]; + int ret; + + ret = cqhci_suspend(slot->host->mmc); + if (ret) + return ret; + + return sdhci_suspend_host(slot->host); +} #endif static void gl9763e_hs400_enhanced_strobe(struct mmc_host *mmc, @@ -614,6 +646,110 @@ static void sdhci_set_gl9763e_signaling(struct sdhci_host *host, sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); } +static void sdhci_gl9763e_dumpregs(struct mmc_host *mmc) +{ + sdhci_dumpregs(mmc_priv(mmc)); +} + +static void sdhci_gl9763e_cqe_pre_enable(struct mmc_host *mmc) +{ + struct cqhci_host *cq_host = mmc->cqe_private; + u32 value; + + value = cqhci_readl(cq_host, CQHCI_CFG); + value |= CQHCI_ENABLE; + cqhci_writel(cq_host, value, CQHCI_CFG); +} + +static void sdhci_gl9763e_cqe_enable(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + + sdhci_writew(host, GLI_9763E_CQE_TRNS_MODE, SDHCI_TRANSFER_MODE); + sdhci_cqe_enable(mmc); +} + +static u32 sdhci_gl9763e_cqhci_irq(struct sdhci_host *host, u32 intmask) +{ + int cmd_error = 0; + int data_error = 0; + + if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error)) + return intmask; + + cqhci_irq(host->mmc, intmask, cmd_error, data_error); + + return 0; +} + +static void sdhci_gl9763e_cqe_post_disable(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + struct cqhci_host *cq_host = mmc->cqe_private; + u32 value; + + value = cqhci_readl(cq_host, CQHCI_CFG); + value &= ~CQHCI_ENABLE; + cqhci_writel(cq_host, value, CQHCI_CFG); + sdhci_writew(host, 0x0, SDHCI_TRANSFER_MODE); +} + +static const struct cqhci_host_ops sdhci_gl9763e_cqhci_ops = { + .enable = sdhci_gl9763e_cqe_enable, + .disable = sdhci_cqe_disable, + .dumpregs = sdhci_gl9763e_dumpregs, + .pre_enable = sdhci_gl9763e_cqe_pre_enable, + .post_disable = sdhci_gl9763e_cqe_post_disable, +}; + +static int gl9763e_add_host(struct sdhci_pci_slot *slot) +{ + struct device *dev = &slot->chip->pdev->dev; + struct sdhci_host *host = slot->host; + struct cqhci_host *cq_host; + bool dma64; + int ret; + + ret = sdhci_setup_host(host); + if (ret) + return ret; + + cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL); + if (!cq_host) { + ret = -ENOMEM; + goto cleanup; + } + + cq_host->mmio = host->ioaddr + SDHCI_GLI_9763E_CQE_BASE_ADDR; + cq_host->ops = &sdhci_gl9763e_cqhci_ops; + + dma64 = host->flags & SDHCI_USE_64_BIT_DMA; + if (dma64) + cq_host->caps |= CQHCI_TASK_DESC_SZ_128; + + ret = cqhci_init(cq_host, host->mmc, dma64); + if (ret) + goto cleanup; + + ret = __sdhci_add_host(host); + if (ret) + goto cleanup; + + return 0; + +cleanup: + sdhci_cleanup_host(host); + return ret; +} + +static void sdhci_gl9763e_reset(struct sdhci_host *host, u8 mask) +{ + if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL) && + host->mmc->cqe_private) + cqhci_deactivate(host->mmc); + sdhci_reset(host, mask); +} + static void gli_set_gl9763e(struct sdhci_pci_slot *slot) { struct pci_dev *pdev = slot->chip->pdev; @@ -636,7 +772,9 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot) static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot) { + struct pci_dev *pdev = slot->chip->pdev; struct sdhci_host *host = slot->host; + u32 value; host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_1_8V_DDR | @@ -646,6 +784,11 @@ static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot) MMC_CAP2_HS400_ES | MMC_CAP2_NO_SDIO | MMC_CAP2_NO_SD; + + pci_read_config_dword(pdev, PCIE_GLI_9763E_MB, &value); + if (!(value & GLI_9763E_MB_CMDQ_OFF)) + host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD; + gli_pcie_enable_msi(slot); host->mmc_host_ops.hs400_enhanced_strobe = gl9763e_hs400_enhanced_strobe; @@ -699,9 +842,10 @@ static const struct sdhci_ops sdhci_gl9763e_ops = { .set_clock = sdhci_set_clock, .enable_dma = sdhci_pci_enable_dma, .set_bus_width = sdhci_set_bus_width, - .reset = sdhci_reset, + .reset = sdhci_gl9763e_reset, .set_uhs_signaling = sdhci_set_gl9763e_signaling, .voltage_switch = sdhci_gli_voltage_switch, + .irq = sdhci_gl9763e_cqhci_irq, }; const struct sdhci_pci_fixes sdhci_gl9763e = { @@ -709,6 +853,8 @@ const struct sdhci_pci_fixes sdhci_gl9763e = { .probe_slot = gli_probe_slot_gl9763e, .ops = &sdhci_gl9763e_ops, #ifdef CONFIG_PM_SLEEP - .resume = sdhci_pci_gli_resume, + .resume = sdhci_cqhci_gli_resume, + .suspend = sdhci_cqhci_gli_suspend, #endif + .add_host = gl9763e_add_host, }; |