diff options
| author | Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> | 2016-06-16 16:53:33 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-06-16 23:24:55 +0300 |
| commit | 3ee2e6dcaa3570df6f7ceeda6d8342bc47cf6b1c (patch) | |
| tree | d13c69889e54161ddca9252317be0ac71d144088 /drivers/ata/ahci_brcm.c | |
| parent | eba68f829794a1c3eb7a78d53c652daa303580ed (diff) | |
| download | linux-3ee2e6dcaa3570df6f7ceeda6d8342bc47cf6b1c.tar.xz | |
ata: ahci_brcm: Add support for Broadcom NSP SoC
Add SATA3 support for Broadcom NSP SoC
Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/ahci_brcm.c')
| -rw-r--r-- | drivers/ata/ahci_brcm.c | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/drivers/ata/ahci_brcm.c b/drivers/ata/ahci_brcm.c index e87bcec0fd7c..6f8a7341fa08 100644 --- a/drivers/ata/ahci_brcm.c +++ b/drivers/ata/ahci_brcm.c @@ -71,6 +71,12 @@ (DATA_ENDIAN << DMADESC_ENDIAN_SHIFT) | \ (MMIO_ENDIAN << MMIO_ENDIAN_SHIFT)) +enum brcm_ahci_version { + BRCM_SATA_BCM7425 = 1, + BRCM_SATA_BCM7445, + BRCM_SATA_NSP, +}; + enum brcm_ahci_quirks { BRCM_AHCI_QUIRK_NO_NCQ = BIT(0), BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE = BIT(1), @@ -81,6 +87,7 @@ struct brcm_ahci_priv { void __iomem *top_ctrl; u32 port_mask; u32 quirks; + enum brcm_ahci_version version; }; static const struct ata_port_info ahci_brcm_port_info = { @@ -247,9 +254,19 @@ static u32 brcm_ahci_get_portmask(struct platform_device *pdev, static void brcm_sata_init(struct brcm_ahci_priv *priv) { + void __iomem *ctrl = priv->top_ctrl + SATA_TOP_CTRL_BUS_CTRL; + /* Configure endianness */ - brcm_sata_writereg(BUS_CTRL_ENDIAN_CONF, - priv->top_ctrl + SATA_TOP_CTRL_BUS_CTRL); + if (priv->version == BRCM_SATA_NSP) { + u32 data = brcm_sata_readreg(ctrl); + + data &= ~((0x03 << DMADATA_ENDIAN_SHIFT) | + (0x03 << DMADESC_ENDIAN_SHIFT)); + data |= (0x02 << DMADATA_ENDIAN_SHIFT) | + (0x02 << DMADESC_ENDIAN_SHIFT); + brcm_sata_writereg(data, ctrl); + } else + brcm_sata_writereg(BUS_CTRL_ENDIAN_CONF, ctrl); } #ifdef CONFIG_PM_SLEEP @@ -282,8 +299,17 @@ static struct scsi_host_template ahci_platform_sht = { AHCI_SHT(DRV_NAME), }; +static const struct of_device_id ahci_of_match[] = { + {.compatible = "brcm,bcm7425-ahci", .data = (void *)BRCM_SATA_BCM7425}, + {.compatible = "brcm,bcm7445-ahci", .data = (void *)BRCM_SATA_BCM7445}, + {.compatible = "brcm,bcm-nsp-ahci", .data = (void *)BRCM_SATA_NSP}, + {}, +}; +MODULE_DEVICE_TABLE(of, ahci_of_match); + static int brcm_ahci_probe(struct platform_device *pdev) { + const struct of_device_id *of_id; struct device *dev = &pdev->dev; struct brcm_ahci_priv *priv; struct ahci_host_priv *hpriv; @@ -293,6 +319,12 @@ static int brcm_ahci_probe(struct platform_device *pdev) priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; + + of_id = of_match_node(ahci_of_match, pdev->dev.of_node); + if (!of_id) + return -ENODEV; + + priv->version = (enum brcm_ahci_version)of_id->data; priv->dev = dev; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "top-ctrl"); @@ -300,7 +332,8 @@ static int brcm_ahci_probe(struct platform_device *pdev) if (IS_ERR(priv->top_ctrl)) return PTR_ERR(priv->top_ctrl); - if (of_device_is_compatible(dev->of_node, "brcm,bcm7425-ahci")) { + if ((priv->version == BRCM_SATA_BCM7425) || + (priv->version == BRCM_SATA_NSP)) { priv->quirks |= BRCM_AHCI_QUIRK_NO_NCQ; priv->quirks |= BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE; } @@ -354,13 +387,6 @@ static int brcm_ahci_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id ahci_of_match[] = { - {.compatible = "brcm,bcm7425-ahci"}, - {.compatible = "brcm,bcm7445-ahci"}, - {}, -}; -MODULE_DEVICE_TABLE(of, ahci_of_match); - static SIMPLE_DEV_PM_OPS(ahci_brcm_pm_ops, brcm_ahci_suspend, brcm_ahci_resume); static struct platform_driver brcm_ahci_driver = { |