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mmc: sdhci-pci-gli: Add Genesys Logic GL9763E support 

GL9763E supports High Speed SDR, High Speed DDR, HS200, HS400, Enhanced
Strobe in HS400 mode, 1/4/8 bits data bus and 3.3/1.8V.

Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Link: https://lore.kernel.org/r/20200508064154.13473-1-benchuanggli@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ben Chuang 2020-05-08 14:41:54 +08:00 committed by Ulf Hansson
parent 1be64c7963
commit 1ae1d2d6e5
3 changed files with 109 additions and 0 deletions
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1
drivers/mmc/host/sdhci-pci-core.c
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@ -1745,6 +1745,7 @@ static const struct pci_device_id pci_ids[] = {
SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps),
SDHCI_PCI_DEVICE(GLI, 9750, gl9750),
SDHCI_PCI_DEVICE(GLI, 9755, gl9755),
SDHCI_PCI_DEVICE(GLI, 9763E, gl9763e),
SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
/* Generic SD host controller */
{PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},

106
drivers/mmc/host/sdhci-pci-gli.c
View File

@ -63,6 +63,19 @@
#define SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY GENMASK(2, 0)
#define GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE 0x1
#define SDHCI_GLI_9763E_CTRL_HS400 0x7
#define SDHCI_GLI_9763E_HS400_ES_REG 0x52C
#define SDHCI_GLI_9763E_HS400_ES_BIT BIT(8)
#define PCIE_GLI_9763E_VHS 0x884
#define GLI_9763E_VHS_REV GENMASK(19, 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_SCR 0x8E0
#define GLI_9763E_SCR_AXI_REQ BIT(9)
#define GLI_MAX_TUNING_LOOP 40
/* Genesys Logic chipset */
@ -351,6 +364,81 @@ static int sdhci_pci_gli_resume(struct sdhci_pci_chip *chip)
}
#endif
static void gl9763e_hs400_enhanced_strobe(struct mmc_host *mmc,
struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
u32 val;
val = sdhci_readl(host, SDHCI_GLI_9763E_HS400_ES_REG);
if (ios->enhanced_strobe)
val |= SDHCI_GLI_9763E_HS400_ES_BIT;
else
val &= ~SDHCI_GLI_9763E_HS400_ES_BIT;
sdhci_writel(host, val, SDHCI_GLI_9763E_HS400_ES_REG);
}
static void sdhci_set_gl9763e_signaling(struct sdhci_host *host,
unsigned int timing)
{
u16 ctrl_2;
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
if (timing == MMC_TIMING_MMC_HS200)
ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
else if (timing == MMC_TIMING_MMC_HS)
ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
else if (timing == MMC_TIMING_MMC_DDR52)
ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
else if (timing == MMC_TIMING_MMC_HS400)
ctrl_2 |= SDHCI_GLI_9763E_CTRL_HS400;
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
}
static void gli_set_gl9763e(struct sdhci_pci_slot *slot)
{
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_SCR, &value);
value |= GLI_9763E_SCR_AXI_REQ;
pci_write_config_dword(pdev, PCIE_GLI_9763E_SCR, 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 gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot)
{
struct sdhci_host *host = slot->host;
host->mmc->caps |= MMC_CAP_8_BIT_DATA |
MMC_CAP_1_8V_DDR |
MMC_CAP_NONREMOVABLE;
host->mmc->caps2 |= MMC_CAP2_HS200_1_8V_SDR |
MMC_CAP2_HS400_1_8V |
MMC_CAP2_HS400_ES |
MMC_CAP2_NO_SDIO |
MMC_CAP2_NO_SD;
gli_pcie_enable_msi(slot);
host->mmc_host_ops.hs400_enhanced_strobe =
gl9763e_hs400_enhanced_strobe;
gli_set_gl9763e(slot);
sdhci_enable_v4_mode(host);
return 0;
}
static const struct sdhci_ops sdhci_gl9755_ops = {
.set_clock = sdhci_set_clock,
.enable_dma = sdhci_pci_enable_dma,
@ -390,3 +478,21 @@ const struct sdhci_pci_fixes sdhci_gl9750 = {
.resume = sdhci_pci_gli_resume,
#endif
};
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,
.set_uhs_signaling = sdhci_set_gl9763e_signaling,
.voltage_switch = sdhci_gli_voltage_switch,
};
const struct sdhci_pci_fixes sdhci_gl9763e = {
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.probe_slot = gli_probe_slot_gl9763e,
.ops = &sdhci_gl9763e_ops,
#ifdef CONFIG_PM_SLEEP
.resume = sdhci_pci_gli_resume,
#endif
};

2
drivers/mmc/host/sdhci-pci.h
View File

@ -72,6 +72,7 @@
#define PCI_DEVICE_ID_GLI_9755 0x9755
#define PCI_DEVICE_ID_GLI_9750 0x9750
#define PCI_DEVICE_ID_GLI_9763E 0xe763
/*
* PCI device class and mask
@ -195,5 +196,6 @@ extern const struct sdhci_pci_fixes sdhci_snps;
extern const struct sdhci_pci_fixes sdhci_o2;
extern const struct sdhci_pci_fixes sdhci_gl9750;
extern const struct sdhci_pci_fixes sdhci_gl9755;
extern const struct sdhci_pci_fixes sdhci_gl9763e;
#endif /* __SDHCI_PCI_H */