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authorRamneek Mehresh <ramneek.mehresh@freescale.com>2012-03-20 09:05:50 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-19 00:46:42 +0400
commit58c559e6509f276d0afb4621b2122e994e70160c (patch)
treea283772f0748cb6dd63d236851ecd20b3f89b780 /drivers/usb/host/fsl-mph-dr-of.c
parent67c88382e0bf92d7e09536ac47674c9fc9398b98 (diff)
downloadlinux-58c559e6509f276d0afb4621b2122e994e70160c.tar.xz
fsl/usb: Add controller version based ULPI and UTMI phy support
Add support for ULPI and UTMI PHYs based on usb controller version info read from device-tree Example of USB Controller versioning info: Version 1.2 and below : MPC8536, MPC8315, etc Version 1.6 : P1020, P1010, P2020, P5020, etc Version 2.2 : PSC9131, PSC9132, P3060, etc No changes for non-DT users Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Acked-by: Li Yang <leoli@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/fsl-mph-dr-of.c')
-rw-r--r--drivers/usb/host/fsl-mph-dr-of.c41
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])