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>
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 3e73451..653e577 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -1,6 +1,6 @@
/*
* Copyright 2005-2009 MontaVista Software, Inc.
- * Copyright 2008 Freescale Semiconductor, Inc.
+ * Copyright 2008,2012 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -211,19 +211,32 @@
usb_put_hcd(hcd);
}
-static void ehci_fsl_setup_phy(struct ehci_hcd *ehci,
+static void ehci_fsl_setup_phy(struct usb_hcd *hcd,
enum fsl_usb2_phy_modes phy_mode,
unsigned int port_offset)
{
- u32 portsc;
- struct usb_hcd *hcd = ehci_to_hcd(ehci);
+ u32 portsc, temp;
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
void __iomem *non_ehci = hcd->regs;
+ struct device *dev = hcd->self.controller;
+ struct fsl_usb2_platform_data *pdata = dev->platform_data;
+
+ if (pdata->controller_ver < 0) {
+ dev_warn(hcd->self.controller, "Could not get controller version\n");
+ return;
+ }
portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);
portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
switch (phy_mode) {
case FSL_USB2_PHY_ULPI:
+ if (pdata->controller_ver) {
+ /* controller version 1.6 or above */
+ temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
+ out_be32(non_ehci + FSL_SOC_USB_CTRL, temp |
+ USB_CTRL_USB_EN | ULPI_PHY_CLK_SEL);
+ }
portsc |= PORT_PTS_ULPI;
break;
case FSL_USB2_PHY_SERIAL:
@@ -233,6 +246,14 @@
portsc |= PORT_PTS_PTW;
/* fall through */
case FSL_USB2_PHY_UTMI:
+ if (pdata->controller_ver) {
+ /* controller version 1.6 or above */
+ temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
+ out_be32(non_ehci + FSL_SOC_USB_CTRL, temp |
+ UTMI_PHY_EN | USB_CTRL_USB_EN);
+ mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to
+ become stable - 10ms*/
+ }
/* enable UTMI PHY */
setbits32(non_ehci + FSL_SOC_USB_CTRL, CTRL_UTMI_PHY_EN);
portsc |= PORT_PTS_UTMI;
@@ -271,7 +292,7 @@
if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
(pdata->operating_mode == FSL_USB2_DR_OTG))
- ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0);
+ ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0);
if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
unsigned int chip, rev, svr;
@@ -285,9 +306,9 @@
ehci->has_fsl_port_bug = 1;
if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
- ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0);
+ ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0);
if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
- ehci_fsl_setup_phy(ehci, pdata->phy_mode, 1);
+ ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1);
}
if (pdata->have_sysif_regs) {
diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
index 863fb0c..8840368 100644
--- a/drivers/usb/host/ehci-fsl.h
+++ b/drivers/usb/host/ehci-fsl.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005-2010 Freescale Semiconductor, Inc.
+/* Copyright (C) 2005-2010,2012 Freescale Semiconductor, Inc.
* Copyright (c) 2005 MontaVista Software
*
* This program is free software; you can redistribute it and/or modify it
@@ -50,4 +50,15 @@
#define CTRL_UTMI_PHY_EN (1<<9)
#define CTRL_PHY_CLK_VALID (1 << 17)
#define SNOOP_SIZE_2GB 0x1e
+
+/* control Register Bit Masks */
+#define ULPI_INT_EN (1<<0)
+#define WU_INT_EN (1<<1)
+#define USB_CTRL_USB_EN (1<<2)
+#define LINE_STATE_FILTER__EN (1<<3)
+#define KEEP_OTG_ON (1<<4)
+#define OTG_PORT (1<<5)
+#define PLL_RESET (1<<8)
+#define UTMI_PHY_EN (1<<9)
+#define ULPI_PHY_CLK_SEL (1<<10)
#endif /* _EHCI_FSL_H */
diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index ab333ac..22ff6b3 100644
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -119,6 +119,39 @@
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 @@
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])