diff options
Diffstat (limited to 'drivers/usb/host/fsl-mph-dr-of.c')
| -rw-r--r-- | drivers/usb/host/fsl-mph-dr-of.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index ab333ac6071d..22ff6b3a676f 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -119,6 +119,39 @@ error: static const struct of_device_id fsl_usb2_mph_dr_of_match[]; +static int usb_get_ver_info(struct device_node *np) +{ + int ver = -1; + + /* + * returns 1 for usb controller version 1.6 + * returns 2 for usb controller version 2.2 + * returns 0 otherwise + */ + if (of_device_is_compatible(np, "fsl-usb2-dr")) { + if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6")) + ver = FSL_USB_VER_1_6; + else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2")) + ver = FSL_USB_VER_2_2; + else /* for previous controller versions */ + ver = FSL_USB_VER_OLD; + + if (ver > -1) + return ver; + } + + if (of_device_is_compatible(np, "fsl-usb2-mph")) { + if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6")) + ver = FSL_USB_VER_1_6; + else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2")) + ver = FSL_USB_VER_2_2; + else /* for previous controller versions */ + ver = FSL_USB_VER_OLD; + } + + return ver; +} + static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) { struct device_node *np = ofdev->dev.of_node; @@ -166,6 +199,14 @@ static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) prop = of_get_property(np, "phy_type", NULL); pdata->phy_mode = determine_usb_phy(prop); + pdata->controller_ver = usb_get_ver_info(np); + + if (pdata->have_sysif_regs) { + if (pdata->controller_ver < 0) { + dev_warn(&ofdev->dev, "Could not get controller version\n"); + return -ENODEV; + } + } for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { if (!dev_data->drivers[i]) |