From: Kefeng Wang <[email protected]> The hip04 SoC of hisilicon has an AHCI compliant SATA controller, and it is compliant with the ahci 1.3 and sata 3.0 specification.
There is a wrong bit in HOST_CAP of hip04 sata controller, which enable unsupported feature of FBS, use AHCI_HFLAG_NO_FBS hflag to disable it. Signed-off-by: Kefeng Wang <[email protected]> --- .../devicetree/bindings/ata/ahci-platform.txt | 3 +- drivers/ata/ahci_platform.c | 65 +++++++++++++++----- 2 files changed, 52 insertions(+), 16 deletions(-) diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt index 48b285f..aab1d70 100644 --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -7,7 +7,8 @@ Required properties: - compatible : compatible list, one of "snps,spear-ahci", "snps,exynos5440-ahci", "ibm,476gtr-ahci", "allwinner,sun4i-a10-ahci", "fsl,imx53-ahci" - "fsl,imx6q-ahci" or "snps,dwc-ahci" + "fsl,imx6q-ahci", "snps,dwc-ahci" or + "hisilicon,hisi-ahci" - interrupts : <interrupt mapping for SATA IRQ> - reg : <registers mapping> diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c index ef67e79..9581d51 100644 --- a/drivers/ata/ahci_platform.c +++ b/drivers/ata/ahci_platform.c @@ -17,22 +17,61 @@ #include <linux/pm.h> #include <linux/device.h> #include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <linux/libata.h> #include <linux/ahci_platform.h> #include "ahci.h" -static const struct ata_port_info ahci_port_info = { - .flags = AHCI_FLAG_COMMON, - .pio_mask = ATA_PIO4, - .udma_mask = ATA_UDMA6, - .port_ops = &ahci_platform_ops, +enum ahci_type { + AHCI, /* standard platform ahci */ + HIP04_AHCI, /* ahci on HiP04 */ }; +static const struct ata_port_info ahci_port_info[] = { + [AHCI] = { + .flags = AHCI_FLAG_COMMON, + .pio_mask = ATA_PIO4, + .udma_mask = ATA_UDMA6, + .port_ops = &ahci_platform_ops, + }, + [HIP04_AHCI] = { + AHCI_HFLAGS (AHCI_HFLAG_NO_FBS), + .flags = AHCI_FLAG_COMMON, + .pio_mask = ATA_PIO4, + .udma_mask = ATA_UDMA6, + .port_ops = &ahci_platform_ops, + }, +}; + +static const struct of_device_id ahci_of_match[] = { + { .compatible = "snps,spear-ahci", }, + { .compatible = "snps,exynos5440-ahci", }, + { .compatible = "ibm,476gtr-ahci", }, + { .compatible = "snps,dwc-ahci", }, + { .compatible = "hisilicon,hisi-ahci", .data = (void *)HIP04_AHCI, }, + {}, +}; +MODULE_DEVICE_TABLE(of, ahci_of_match); + +static int ahci_match_of_id(struct platform_device *pdev, + enum ahci_type *ahci_type) +{ + const struct of_device_id *of_id = of_match_device(ahci_of_match, + &pdev->dev); + if (!of_id) + return -ENODEV; + *ahci_type = (unsigned long)(of_id->data); + return 0; +} + static int ahci_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct ahci_platform_data *pdata = dev_get_platdata(dev); struct ahci_host_priv *hpriv; + struct ata_port_info pi; + enum ahci_type ahci_type; int rc; hpriv = ahci_platform_get_resources(pdev); @@ -55,7 +94,12 @@ static int ahci_probe(struct platform_device *pdev) goto disable_resources; } - rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info, 0, 0); + if (!ahci_match_of_id(pdev, &ahci_type)) + pi = ahci_port_info[ahci_type]; + else + pi = ahci_port_info[AHCI]; + + rc = ahci_platform_init_host(pdev, hpriv, &pi, 0, 0); if (rc) goto pdata_exit; @@ -71,15 +115,6 @@ disable_resources: static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, ahci_platform_resume); -static const struct of_device_id ahci_of_match[] = { - { .compatible = "snps,spear-ahci", }, - { .compatible = "snps,exynos5440-ahci", }, - { .compatible = "ibm,476gtr-ahci", }, - { .compatible = "snps,dwc-ahci", }, - {}, -}; -MODULE_DEVICE_TABLE(of, ahci_of_match); - static struct platform_driver ahci_driver = { .probe = ahci_probe, .remove = ata_platform_remove_one, -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
