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Message-Id: <1292929580-5829-1-git-send-email-anoop.pa@gmail.com>
Date: Tue, 21 Dec 2010 16:36:20 +0530
From: Anoop P <anoop.pa@...il.com>
To: Ralf Baechle <ralf@...ux-mips.org>, gregkh@...e.de,
dbrownell@...rs.sourceforge.net, stern@...land.harvard.edu,
sarah.a.sharp@...ux.intel.com, andiry.xu@....com, agust@...x.de,
ddaney@...iumnetworks.com, gadiyar@...com,
linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
linux-usb@...r.kernel.org
Cc: Anoop P A <anoop.pa@...il.com>
Subject: [PATCH] EHCI support for on-chip PMC MSP USB controller.
From: Anoop P A <anoop.pa@...il.com>
This patch includes.
1. USB host driver for MSP71xx family SoC on-chip USB controller.
2. Platform support for USB controller.
Signed-off-by: Anoop P A <anoop.pa@...il.com>
---
.../mips/include/asm/pmc-sierra/msp71xx/msp_regs.h | 17 +-
arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h | 144 +++++
arch/mips/pmc-sierra/Kconfig | 8 +
arch/mips/pmc-sierra/msp71xx/Makefile | 2 +-
arch/mips/pmc-sierra/msp71xx/msp_usb.c | 239 +++++++---
drivers/usb/core/hub.c | 31 ++
drivers/usb/host/Kconfig | 15 +-
drivers/usb/host/ehci-hcd.c | 12 +
drivers/usb/host/ehci-pmcmsp.c | 555 ++++++++++++++++++++
9 files changed, 949 insertions(+), 74 deletions(-)
create mode 100644 arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h
create mode 100644 drivers/usb/host/ehci-pmcmsp.c
diff --git a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h
index 603eb73..692c1b6 100644
--- a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h
+++ b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h
@@ -91,12 +91,10 @@
/* MAC C device registers */
#define MSP_ADSL2_BASE (MSP_MSB_BASE + 0xA80000)
/* ADSL2 device registers */
-#define MSP_USB_BASE (MSP_MSB_BASE + 0xB40000)
- /* USB device registers */
-#define MSP_USB_BASE_START (MSP_MSB_BASE + 0xB40100)
- /* USB device registers */
-#define MSP_USB_BASE_END (MSP_MSB_BASE + 0xB401FF)
- /* USB device registers */
+#define MSP_USB0_BASE (MSP_MSB_BASE + 0xB00000)
+ /* USB0 device registers */
+#define MSP_USB1_BASE (MSP_MSB_BASE + 0x300000)
+ /* USB1 device registers */
#define MSP_CPUIF_BASE (MSP_MSB_BASE + 0xC00000)
/* CPU interface registers */
@@ -319,8 +317,11 @@
#define CPU_ERR2_REG regptr(MSP_SLP_BASE + 0x184)
/* CPU/SLP Error status 1 */
-#define EXTENDED_GPIO_REG regptr(MSP_SLP_BASE + 0x188)
- /* Extended GPIO register */
+/* Extended GPIO registers */
+#define EXTENDED_GPIO1_REG regptr(MSP_SLP_BASE + 0x188)
+#define EXTENDED_GPIO2_REG regptr(MSP_SLP_BASE + 0x18c)
+#define EXTENDED_GPIO_REG EXTENDED_GPIO1_REG
+ /* Backward-compatibility */
/* System Error registers */
#define SLP_ERR_STS_REG regptr(MSP_SLP_BASE + 0x190)
diff --git a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h
new file mode 100644
index 0000000..4c9348d
--- /dev/null
+++ b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h
@@ -0,0 +1,144 @@
+/******************************************************************
+ * Copyright (c) 2000-2007 PMC-Sierra 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 Free Software
+ * Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
+ * 02139, USA.
+ *
+ * PMC-SIERRA INC. DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
+ * SOFTWARE.
+ */
+#ifndef MSP_USB_H_
+#define MSP_USB_H_
+
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+#define NUM_USB_DEVS 2
+#else
+#define NUM_USB_DEVS 1
+#endif
+
+/* Register spaces for USB host 0 */
+#define MSP_USB0_MAB_START (MSP_USB0_BASE + 0x0)
+#define MSP_USB0_MAB_END (MSP_USB0_BASE + 0x17)
+#define MSP_USB0_ID_START (MSP_USB0_BASE + 0x40000)
+#define MSP_USB0_ID_END (MSP_USB0_BASE + 0x4008f)
+#define MSP_USB0_HS_START (MSP_USB0_BASE + 0x40100)
+#define MSP_USB0_HS_END (MSP_USB0_BASE + 0x401FF)
+
+/* Register spaces for USB host 1 */
+#define MSP_USB1_MAB_START (MSP_USB1_BASE + 0x0)
+#define MSP_USB1_MAB_END (MSP_USB1_BASE + 0x17)
+#define MSP_USB1_ID_START (MSP_USB1_BASE + 0x40000)
+#define MSP_USB1_ID_END (MSP_USB1_BASE + 0x4008f)
+#define MSP_USB1_HS_START (MSP_USB1_BASE + 0x40100)
+#define MSP_USB1_HS_END (MSP_USB1_BASE + 0x401ff)
+
+/* USB Identification registers */
+struct msp_usbid_regs {
+ u32 id; /* 0x0: Identification register */
+ u32 hwgen; /* 0x4: General HW params */
+ u32 hwhost; /* 0x8: Host HW params */
+ u32 hwdev; /* 0xc: Device HW params */
+ u32 hwtxbuf; /* 0x10: Tx buffer HW params */
+ u32 hwrxbuf; /* 0x14: Rx buffer HW params */
+ u32 reserved[26];
+ u32 timer0_load; /* 0x80: General-purpose timer 0 load*/
+ u32 timer0_ctrl; /* 0x84: General-purpose timer 0 control */
+ u32 timer1_load; /* 0x88: General-purpose timer 1 load*/
+ u32 timer1_ctrl; /* 0x8c: General-purpose timer 1 control */
+};
+
+/* MSBus to AMBA registers */
+struct msp_mab_regs {
+ u32 isr; /* 0x0: Interrupt status */
+ u32 imr; /* 0x4: Interrupt mask */
+ u32 thcr0; /* 0x8: Transaction header capture 0 */
+ u32 thcr1; /* 0xc: Transaction header capture 1 */
+ u32 int_stat; /* 0x10: Interrupt status summary */
+ u32 phy_cfg; /* 0x14: USB phy config */
+};
+
+/* EHCI registers */
+struct msp_usbhs_regs {
+ u32 hciver; /* 0x0: Version and offset to operational regs */
+ u32 hcsparams; /* 0x4: Host control structural parameters */
+ u32 hccparams; /* 0x8: Host control capability parameters */
+ u32 reserved0[5];
+ u32 dciver; /* 0x20: Device interface version */
+ u32 dccparams; /* 0x24: Device control capability parameters */
+ u32 reserved1[6];
+ u32 cmd; /* 0x40: USB command */
+ u32 sts; /* 0x44: USB status */
+ u32 int_ena; /* 0x48: USB interrupt enable */
+ u32 frindex; /* 0x4c: Frame index */
+ u32 reserved3;
+ union {
+ struct {
+ u32 flb_addr; /* 0x54: Frame list base address */
+ u32 next_async_addr; /* 0x58: next asynchronous addr */
+ u32 ttctrl; /* 0x5c: embedded transaction translator
+ async buffer status */
+ u32 burst_size; /* 0x60: Controller burst size */
+ u32 tx_fifo_ctrl; /* 0x64: Tx latency FIFO tuning */
+ u32 reserved0[4];
+ u32 endpt_nak; /* 0x78: Endpoint NAK */
+ u32 endpt_nak_ena; /* 0x7c: Endpoint NAK enable */
+ u32 cfg_flag; /* 0x80: Config flag */
+ u32 port_sc1; /* 0x84: Port status & control 1 */
+ u32 reserved1[7];
+ u32 otgsc; /* 0xa4: OTG status & control */
+ u32 mode; /* 0xa8: USB controller mode */
+ } host;
+
+ struct {
+ u32 dev_addr; /* 0x54: Device address */
+ u32 endpt_list_addr; /* 0x58: Endpoint list address */
+ u32 reserved0[7];
+ u32 endpt_nak; /* 0x74 */
+ u32 endpt_nak_ctrl; /* 0x78 */
+ u32 cfg_flag; /* 0x80 */
+ u32 port_sc1; /* 0x84: Port status & control 1 */
+ u32 reserved[7];
+ u32 otgsc; /* 0xa4: OTG status & control */
+ u32 mode; /* 0xa8: USB controller mode */
+ u32 endpt_setup_stat; /* 0xac */
+ u32 endpt_prime; /* 0xb0 */
+ u32 endpt_flush; /* 0xb4 */
+ u32 endpt_stat; /* 0xb8 */
+ u32 endpt_complete; /* 0xbc */
+ u32 endpt_ctrl0; /* 0xc0 */
+ u32 endpt_ctrl1; /* 0xc4 */
+ u32 endpt_ctrl2; /* 0xc8 */
+ u32 endpt_ctrl3; /* 0xcc */
+ } device;
+ } u;
+};
+/*
+ * Container for the more-generic platform_device.
+ * This exists mainly as a way to map the non-standard register
+ * spaces and make them accessible to the USB ISR.
+ */
+struct mspusb_device {
+ struct msp_mab_regs __iomem *mab_regs;
+ struct msp_usbid_regs __iomem *usbid_regs;
+ struct msp_usbhs_regs __iomem *usbhs_regs;
+ struct platform_device dev;
+};
+
+#define to_mspusb_device(x) container_of((x), struct mspusb_device, dev)
+#define TO_HOST_ID(x) ((x) & 0x3)
+#endif /*MSP_USB_H_*/
diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index 8d79849..a80ad25 100644
--- a/arch/mips/pmc-sierra/Kconfig
+++ b/arch/mips/pmc-sierra/Kconfig
@@ -23,6 +23,7 @@ config PMC_MSP7120_GW
select SYS_SUPPORTS_MULTITHREADING
select IRQ_MSP_CIC
select HW_HAS_PCI
+ select MSP_HAS_USB
config PMC_MSP7120_FPGA
bool "PMC-Sierra MSP7120 FPGA"
@@ -35,3 +36,10 @@ endchoice
config HYPERTRANSPORT
bool "Hypertransport Support for PMC-Sierra Yosemite"
depends on PMC_YOSEMITE
+
+
+config MSP_HAS_USB
+ boolean
+ depends on PMC_MSP
+ select USB_ARCH_HAS_EHCI
+ select USB_ARCH_HAS_HCD
diff --git a/arch/mips/pmc-sierra/msp71xx/Makefile b/arch/mips/pmc-sierra/msp71xx/Makefile
index 09627ae..380d39d 100644
--- a/arch/mips/pmc-sierra/msp71xx/Makefile
+++ b/arch/mips/pmc-sierra/msp71xx/Makefile
@@ -9,5 +9,5 @@ obj-$(CONFIG_IRQ_MSP_SLP) += msp_irq_slp.o
obj-$(CONFIG_IRQ_MSP_CIC) += msp_irq_cic.o msp_irq_per.o
obj-$(CONFIG_PCI) += msp_pci.o
obj-$(CONFIG_MSPETH) += msp_eth.o
-obj-$(CONFIG_USB_MSP71XX) += msp_usb.o
+obj-$(CONFIG_MSP_HAS_USB) += msp_usb.o
obj-$(CONFIG_MIPS_MT_SMP) += msp_smp.o
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_usb.c b/arch/mips/pmc-sierra/msp71xx/msp_usb.c
index 0ee01e3..9a1aef8 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_usb.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_usb.c
@@ -1,7 +1,7 @@
/*
* The setup file for USB related hardware on PMC-Sierra MSP processors.
*
- * Copyright 2006-2007 PMC-Sierra, Inc.
+ * Copyright 2006 PMC-Sierra, 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
@@ -23,8 +23,8 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)
-#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
@@ -34,40 +34,56 @@
#include <msp_regs.h>
#include <msp_int.h>
#include <msp_prom.h>
+#include <msp_usb.h>
+
#if defined(CONFIG_USB_EHCI_HCD)
-static struct resource msp_usbhost_resources [] = {
- [0] = {
- .start = MSP_USB_BASE_START,
- .end = MSP_USB_BASE_END,
- .flags = IORESOURCE_MEM,
+static struct resource msp_usbhost0_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB0_HS_START,
+ .end = MSP_USB0_HS_END,
+ .flags = IORESOURCE_MEM,
},
[1] = {
- .start = MSP_INT_USB,
- .end = MSP_INT_USB,
- .flags = IORESOURCE_IRQ,
+ .start = MSP_INT_USB,
+ .end = MSP_INT_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB0_MAB_START,
+ .end = MSP_USB0_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB0_ID_START,
+ .end = MSP_USB0_ID_END,
+ .flags = IORESOURCE_MEM,
},
};
-static u64 msp_usbhost_dma_mask = DMA_BIT_MASK(32);
+static u64 msp_usbhost0_dma_mask = 0xffffffffUL;
-static struct platform_device msp_usbhost_device = {
- .name = "pmcmsp-ehci",
- .id = 0,
+static struct mspusb_device msp_usbhost0_device = {
.dev = {
- .dma_mask = &msp_usbhost_dma_mask,
- .coherent_dma_mask = DMA_BIT_MASK(32),
+ .name = "pmcmsp-ehci",
+ .id = 0,
+ .dev = {
+ .dma_mask = &msp_usbhost0_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbhost0_resources),
+ .resource = msp_usbhost0_resources,
},
- .num_resources = ARRAY_SIZE(msp_usbhost_resources),
- .resource = msp_usbhost_resources,
};
-#endif /* CONFIG_USB_EHCI_HCD */
-#if defined(CONFIG_USB_GADGET)
-static struct resource msp_usbdev_resources [] = {
- [0] = {
- .start = MSP_USB_BASE,
- .end = MSP_USB_BASE_END,
+/* MSP7140/MSP82XX has two USB2 hosts. */
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+static u64 msp_usbhost1_dma_mask = 0xffffffffUL;
+
+static struct resource msp_usbhost1_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB1_HS_START,
+ .end = MSP_USB1_HS_END,
.flags = IORESOURCE_MEM,
},
[1] = {
@@ -75,76 +91,173 @@ static struct resource msp_usbdev_resources [] = {
.end = MSP_INT_USB,
.flags = IORESOURCE_IRQ,
},
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB1_MAB_START,
+ .end = MSP_USB1_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB1_ID_START,
+ .end = MSP_USB1_ID_END,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct mspusb_device msp_usbhost1_device = {
+ .dev = {
+ .name = "pmcmsp-ehci",
+ .id = 1,
+ .dev = {
+ .dma_mask = &msp_usbhost1_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbhost1_resources),
+ .resource = msp_usbhost1_resources,
+ },
};
+#endif /* CONFIG_MSP_HAS_DUAL_USB */
+#endif /* CONFIG_USB_EHCI_HCD */
-static u64 msp_usbdev_dma_mask = DMA_BIT_MASK(32);
+#if defined(CONFIG_USB_GADGET)
+static struct resource msp_usbdev0_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB0_HS_START,
+ .end = MSP_USB0_HS_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = MSP_INT_USB,
+ .end = MSP_INT_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB0_MAB_START,
+ .end = MSP_USB0_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB0_ID_START,
+ .end = MSP_USB0_ID_END,
+ .flags = IORESOURCE_MEM,
+ },
+};
-static struct platform_device msp_usbdev_device = {
- .name = "msp71xx_udc",
- .id = 0,
+static u64 msp_usbdev_dma_mask = 0xffffffffUL;
+
+/* This may need to be converted to a mspusb_device, too. */
+static struct mspusb_device msp_usbdev0_device = {
.dev = {
- .dma_mask = &msp_usbdev_dma_mask,
- .coherent_dma_mask = DMA_BIT_MASK(32),
+ .name = "msp71xx_udc",
+ .id = 0,
+ .dev = {
+ .dma_mask = &msp_usbdev_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbdev0_resources),
+ .resource = msp_usbdev0_resources,
},
- .num_resources = ARRAY_SIZE(msp_usbdev_resources),
- .resource = msp_usbdev_resources,
};
-#endif /* CONFIG_USB_GADGET */
-#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)
-static struct platform_device *msp_devs[1];
-#endif
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+static struct resource msp_usbdev1_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB1_HS_START,
+ .end = MSP_USB1_HS_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = MSP_INT_USB,
+ .end = MSP_INT_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB1_MAB_START,
+ .end = MSP_USB1_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB1_ID_START,
+ .end = MSP_USB1_ID_END,
+ .flags = IORESOURCE_MEM,
+ },
+};
+/* This may need to be converted to a mspusb_device, too. */
+static struct mspusb_device msp_usbdev1_device = {
+ .dev = {
+ .name = "msp71xx_udc",
+ .id = 0,
+ .dev = {
+ .dma_mask = &msp_usbdev_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbdev1_resources),
+ .resource = msp_usbdev1_resources,
+ },
+};
+
+#endif /* CONFIG_MSP_HAS_DUAL_USB */
+#endif /* CONFIG_USB_GADGET */
static int __init msp_usb_setup(void)
{
-#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)
- char *strp;
- char envstr[32];
- unsigned int val = 0;
- int result = 0;
+ char *strp;
+ char envstr[32];
+ struct platform_device *msp_devs[NUM_USB_DEVS];
+ unsigned int val;
+ /* construct environment name usbmode */
+ /* set usbmode <host/device> as pmon environment var */
/*
- * construct environment name usbmode
- * set usbmode <host/device> as pmon environment var
+ * Could this perhaps be integrated into the "features" env var?
+ * Use the features key "U", and follow with "H" for host-mode,
+ * "D" for device-mode. If it works for Ethernet, why not USB...
+ * -- hammtrev, 2007/03/22
*/
snprintf((char *)&envstr[0], sizeof(envstr), "usbmode");
-#if defined(CONFIG_USB_EHCI_HCD)
- /* default to host mode */
+ /* set default host mode */
val = 1;
-#endif
/* get environment string */
strp = prom_getenv((char *)&envstr[0]);
if (strp) {
+ /* compare string */
if (!strcmp(strp, "device"))
val = 0;
}
if (val) {
#if defined(CONFIG_USB_EHCI_HCD)
- /* get host mode device */
- msp_devs[0] = &msp_usbhost_device;
- ppfinit("platform add USB HOST done %s.\n",
- msp_devs[0]->name);
-
- result = platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
-#endif /* CONFIG_USB_EHCI_HCD */
- }
+ msp_devs[0] = &msp_usbhost0_device.dev;
+ ppfinit("platform add USB HOST done %s.\n", msp_devs[0]->name);
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ msp_devs[1] = &msp_usbhost1_device.dev;
+ ppfinit("platform add USB HOST done %s.\n", msp_devs[1]->name);
+#endif
+#else
+ ppfinit("%s: echi_hcd not supported\n", __FILE__);
+#endif /* CONFIG_USB_EHCI_HCD */
+ } else {
#if defined(CONFIG_USB_GADGET)
- else {
/* get device mode structure */
- msp_devs[0] = &msp_usbdev_device;
- ppfinit("platform add USB DEVICE done %s.\n",
- msp_devs[0]->name);
-
- result = platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
+ msp_devs[0] = &msp_usbdev0_device.dev;
+ ppfinit("platform add USB DEVICE done %s.\n"
+ , msp_devs[0]->name);
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ msp_devs[1] = &msp_usbdev1_device.dev;
+ ppfinit("platform add USB DEVICE done %s.\n"
+ , msp_devs[1]->name);
+#endif
+#else
+ ppfinit("%s: usb_gadget not supported\n", __FILE__);
+#endif /* CONFIG_USB_GADGET */
}
-#endif /* CONFIG_USB_GADGET */
-#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */
+ /* add device */
+ platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
- return result;
+ return 0;
}
subsys_initcall(msp_usb_setup);
+#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 27115b4..f2a45ba 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3377,12 +3377,43 @@ static void hub_events(void)
}
if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
+#ifdef CONFIG_USB_EHCI_HCD_PMC_MSP
+#define OVER_CURR_DELAY 100
+ /* clear OCC bit */
+ clear_port_feature(hdev, i,
+ USB_PORT_FEAT_C_OVER_CURRENT);
+
+ /* This step is required to toggle the PP bit
+ * to 0 and 1 (by hub_power_on) in order the
+ * CSC bit to be transitioned
+ * properly for device hotplug
+ */
+ /* clear PP bit */
+ clear_port_feature(hdev, i,
+ USB_PORT_FEAT_POWER);
+
+ /* resume power */
+ hub_power_on(hub, true);
+
+ /* delay 100 usec */
+ udelay(OVER_CURR_DELAY);
+
+ /* read OCA bit */
+ if (portstatus &
+ (1<<USB_PORT_FEAT_OVER_CURRENT)) {
+ /* declare overcurrent */
+ dev_err(hub_dev,
+ "over-current change on port %d\n",
+ i);
+ }
+#else
dev_err (hub_dev,
"over-current change on port %d\n",
i);
clear_port_feature(hdev, i,
USB_PORT_FEAT_C_OVER_CURRENT);
hub_power_on(hub, true);
+#endif
}
if (portchange & USB_PORT_STAT_C_RESET) {
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 2391c39..bc955d0 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -91,17 +91,28 @@ config USB_EHCI_TT_NEWSCHED
If unsure, say Y.
+config USB_EHCI_HCD_PMC_MSP
+ tristate "EHCI support for on-chip PMC MSP USB controller"
+ depends on USB_EHCI_HCD && MSP_HAS_USB
+ default y
+ select USB_EHCI_BIG_ENDIAN_DESC
+ select USB_EHCI_BIG_ENDIAN_MMIO
+ ---help---
+ Enables support for the onchip USB controller on the PMC_MSP7100 Family SoC's.
+ If unsure, say N.
+
config USB_EHCI_BIG_ENDIAN_MMIO
bool
depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \
ARCH_IXP4XX || XPS_USB_HCD_XILINX || \
- PPC_MPC512x || CPU_CAVIUM_OCTEON)
+ PPC_MPC512x || CPU_CAVIUM_OCTEON || \
+ MSP_HAS_USB)
default y
config USB_EHCI_BIG_ENDIAN_DESC
bool
depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX || XPS_USB_HCD_XILINX || \
- PPC_MPC512x)
+ PPC_MPC512x || MSP_HAS_USB)
default y
config XPS_USB_HCD_XILINX
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 502a7e6..833d96a 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -120,6 +120,9 @@ MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n");
#include "ehci-dbg.c"
/*-------------------------------------------------------------------------*/
+#ifdef CONFIG_USB_EHCI_HCD_PMC_MSP
+extern void usb_hcd_tdi_set_mode(struct ehci_hcd *ehci);
+#endif
static void
timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action)
@@ -259,6 +262,10 @@ static void tdi_reset (struct ehci_hcd *ehci)
if (ehci_big_endian_mmio(ehci))
tmp |= USBMODE_BE;
ehci_writel(ehci, tmp, reg_ptr);
+#ifdef CONFIG_USB_EHCI_HCD_PMC_MSP
+ /* set controller in host mode */
+ usb_hcd_tdi_set_mode(ehci);
+#endif
}
/* reset a non-running (STS_HALT == 1) controller */
@@ -1216,6 +1223,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_octeon_driver
#endif
+#ifdef CONFIG_USB_EHCI_HCD_PMC_MSP
+#include "ehci-pmcmsp.c"
+#define PLATFORM_DRIVER ehci_hcd_msp_driver
+#endif
+
#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
!defined(XILINX_OF_PLATFORM_DRIVER)
diff --git a/drivers/usb/host/ehci-pmcmsp.c b/drivers/usb/host/ehci-pmcmsp.c
new file mode 100644
index 0000000..b1b4f21
--- /dev/null
+++ b/drivers/usb/host/ehci-pmcmsp.c
@@ -0,0 +1,555 @@
+/*
+ * PMC MSP EHCI (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 2006 PMC-Sierra 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
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <msp_usb.h>
+
+/* includes */
+#define USB_CTRL_MODE_HOST 0x3
+ /* host mode */
+#define USB_CTRL_MODE_BIG_ENDIAN 0x4
+ /* big endian */
+#define USB_CTRL_MODE_STREAM_DISABLE 0x10
+ /* stream disable*/
+#define USB_CTRL_FIFO_THRESH 0x00300000
+ /* thresh hold */
+#define USB_EHCI_REG_USB_MODE 0x68
+ /* register offset for usb_mode */
+#define USB_EHCI_REG_USB_FIFO 0x24
+ /* register offset for usb fifo */
+#define USB_EHCI_REG_USB_STATUS 0x44
+ /* register offset for usb status */
+#define USB_EHCI_REG_BIT_STAT_STS (1<<29)
+ /* serial/parallel transceiver */
+#define MSP_PIN_USB0_HOST_DEV 49
+ /* TWI USB0 host device pin */
+#define MSP_PIN_USB1_HOST_DEV 50
+ /* TWI USB1 host device pin */
+
+extern int usb_disabled(void);
+
+void usb_hcd_tdi_set_mode(struct ehci_hcd *ehci)
+{
+ u8 *base;
+ u8 *statreg;
+ u8 *fiforeg;
+ u32 val;
+ struct ehci_regs *reg_base = ehci->regs;
+
+ /* get register base */
+ base = (u8 *)reg_base + USB_EHCI_REG_USB_MODE;
+ statreg = (u8 *)reg_base + USB_EHCI_REG_USB_STATUS;
+ fiforeg = (u8 *)reg_base + USB_EHCI_REG_USB_FIFO;
+
+ /* set the controller to host mode and BIG ENDIAN */
+ ehci_writel(ehci, (USB_CTRL_MODE_HOST | USB_CTRL_MODE_BIG_ENDIAN
+ | USB_CTRL_MODE_STREAM_DISABLE), (u32 *)base);
+
+ /* clear STS to select parallel transceiver interface */
+ val = ehci_readl(ehci, (u32 *)statreg);
+ val = val & ~USB_EHCI_REG_BIT_STAT_STS;
+ ehci_writel(ehci, val, (u32 *)statreg);
+
+ /* write to set the proper fifo threshold */
+ ehci_writel(ehci, USB_CTRL_FIFO_THRESH, (u32 *)fiforeg);
+
+ /* set TWI GPIO USB_HOST_DEV pin high */
+ gpio_direction_output(MSP_PIN_USB0_HOST_DEV, 1);
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ gpio_direction_output(MSP_PIN_USB1_HOST_DEV, 1);
+#endif
+}
+
+/* called after powerup, by probe or system-pm "wakeup" */
+static int ehci_msp_reinit(struct ehci_hcd *ehci)
+{
+ ehci_port_power(ehci, 0);
+
+ return 0;
+}
+
+/* called during probe() after chip reset completes */
+static int ehci_msp_setup(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ u32 temp;
+ int retval;
+#if 1
+ ehci->big_endian_mmio = 1;
+ ehci->big_endian_desc = 1;
+
+ ehci->caps = hcd->regs;
+ ehci->regs = hcd->regs +
+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+ dbg_hcs_params(ehci, "reset");
+ dbg_hcc_params(ehci, "reset");
+
+ /* cache this readonly data; minimize chip reads */
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+#endif
+ hcd->has_tt = 1;
+ tdi_reset(ehci);
+
+ retval = ehci_halt(ehci);
+ if (retval)
+ return retval;
+
+ ehci_reset(ehci);
+
+ /* data structure init */
+ retval = ehci_init(hcd);
+ if (retval)
+ return retval;
+
+ temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params);
+ temp &= 0x0f;
+ if (temp && HCS_N_PORTS(ehci->hcs_params) > temp) {
+ ehci_dbg(ehci, "bogus port configuration: "
+ "cc=%d x pcc=%d < ports=%d\n",
+ HCS_N_CC(ehci->hcs_params),
+ HCS_N_PCC(ehci->hcs_params),
+ HCS_N_PORTS(ehci->hcs_params));
+ }
+
+ retval = ehci_msp_reinit(ehci);
+
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef CONFIG_PM
+
+/* suspend/resume, section 4.3 */
+
+/* These routines rely on the bus glue
+ * to handle powerdown and wakeup, and currently also on
+ * transceivers that don't need any software attention to set up
+ * the right sort of wakeup.
+ * Also they depend on separate root hub suspend/resume.
+ */
+
+static int ehci_msp_suspend(struct usb_hcd *hcd, pm_message_t message)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ unsigned long flags;
+ int rc = 0;
+
+ if (time_before(jiffies, ehci->next_statechange))
+ msleep(10);
+
+ /* Root hub was already suspended. Disable irq emission and
+ * mark HW unaccessible, bail out if RH has been resumed. Use
+ * the spinlock to properly synchronize with possible pending
+ * RH suspend or resume activity.
+ *
+ * This is still racy as hcd->state is manipulated outside of
+ * any locks =P But that will be a different fix.
+ */
+ spin_lock_irqsave(&ehci->lock, flags);
+ if (hcd->state != HC_STATE_SUSPENDED) {
+ rc = -EINVAL;
+ goto bail;
+ }
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
+ (void)ehci_readl(ehci, &ehci->regs->intr_enable);
+
+ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+ bail:
+ spin_unlock_irqrestore(&ehci->lock, flags);
+
+ /* could save FLADJ in case of Vaux power loss
+ ... we'd only use it to handle clock skew */
+
+ return rc;
+}
+
+static int ehci_msp_resume(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ unsigned port;
+ struct usb_device *root = hcd->self.root_hub;
+ int retval = -EINVAL;
+
+ /* maybe restore FLADJ */
+
+ if (time_before(jiffies, ehci->next_statechange))
+ msleep(100);
+
+ /* Mark hardware accessible again as we are out of D3 state by now */
+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ /* If CF is clear, we lost PCI Vaux power and need to restart. */
+ if (ehci_readl(ehci, &ehci->regs->configured_flag) != FLAG_CF)
+ goto restart;
+
+ /* If any port is suspended (or owned by the companion),
+ * we know we can/must resume the HC (and mustn't reset it).
+ * We just defer that to the root hub code.
+ */
+ for (port = HCS_N_PORTS(ehci->hcs_params); port > 0; ) {
+ u32 status;
+ port--;
+ status = ehci_readl(ehci, &ehci->regs->port_status[port]);
+ if (!(status & PORT_POWER))
+ continue;
+ if (status & (PORT_SUSPEND | PORT_RESUME | PORT_OWNER)) {
+ usb_hcd_resume_root_hub(hcd);
+ return 0;
+ }
+ }
+
+restart:
+ ehci_dbg(ehci, "lost power, restarting\n");
+ for (port = HCS_N_PORTS(ehci->hcs_params); port > 0; ) {
+ port--;
+ if (!root->children[port])
+ continue;
+ usb_set_device_state(root->children[port],
+ USB_STATE_NOTATTACHED);
+ }
+
+ /* Else reset, to cope with power loss or flush-to-storage
+ * style "resume" having let BIOS kick in during reboot.
+ */
+ (void) ehci_halt(ehci);
+ (void) ehci_reset(ehci);
+ (void) ehci_msp_reinit(ehci, pdev);
+
+ /* emptying the schedule aborts any urbs */
+ spin_lock_irq(&ehci->lock);
+ if (ehci->reclaim)
+ ehci->reclaim_ready = 1;
+ ehci_work(ehci, NULL);
+ spin_unlock_irq(&ehci->lock);
+
+ /* restart; khubd will disconnect devices */
+ retval = ehci_run(hcd);
+
+ /* here we "know" root ports should always stay powered */
+ ehci_port_power(ehci, 1);
+
+ return retval;
+}
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static void msp_start_hc(struct platform_device *dev)
+{
+ printk(KERN_DEBUG __FILE__
+ ": starting PMC MSP EHCI USB Controller\n");
+
+ /*
+ * Now, carefully enable the USB clock, and take
+ * the USB host controller out of reset.
+ */
+ printk(KERN_DEBUG __FILE__
+ ": Clock to USB host has been enabled\n");
+}
+
+static void msp_stop_hc(struct platform_device *dev)
+{
+ printk(KERN_DEBUG __FILE__
+ ": stopping PMC MSP EHCI USB Controller\n");
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+static int usb_hcd_msp_map_regs(struct mspusb_device *dev)
+{
+ struct resource *res;
+ struct platform_device *pdev = &dev->dev;
+ u32 res_len;
+ int retval;
+
+ /* MAB register space */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (res == NULL)
+ return -ENOMEM;
+ res_len = res->end - res->start + 1;
+ if (!request_mem_region(res->start, res_len, "mab regs"))
+ return -EBUSY;
+
+ dev->mab_regs = ioremap_nocache(res->start, res_len);
+ if (dev->mab_regs == NULL) {
+ retval = -ENOMEM;
+ goto err1;
+ }
+
+ /* MSP USB register space */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ if (res == NULL) {
+ retval = -ENOMEM;
+ goto err2;
+ }
+ res_len = res->end - res->start + 1;
+ if (!request_mem_region(res->start, res_len, "usbid regs")) {
+ retval = -EBUSY;
+ goto err2;
+ }
+ dev->usbid_regs = ioremap_nocache(res->start, res_len);
+ if (dev->usbid_regs == NULL) {
+ retval = -ENOMEM;
+ goto err3;
+ }
+
+ return 0;
+err3:
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ res_len = res->end - res->start + 1;
+ release_mem_region(res->start, res_len);
+err2:
+ iounmap(dev->mab_regs);
+err1:
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ res_len = res->end - res->start + 1;
+ release_mem_region(res->start, res_len);
+ dev_err(&pdev->dev, "Failed to map non-EHCI regs.\n");
+ return retval;
+}
+
+/**
+ * usb_hcd_msp_probe - initialize PMC MSP-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ */
+int usb_hcd_msp_probe(const struct hc_driver *driver,
+ struct platform_device *dev)
+{
+ int retval;
+ struct usb_hcd *hcd;
+ struct resource *res;
+ struct ehci_hcd *ehci ;
+
+ hcd = usb_create_hcd(driver, &dev->dev, "pmcmsp");
+ if (!hcd)
+ return -ENOMEM;
+
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ pr_debug("No IOMEM resource info for %s.\n", dev->name);
+ retval = -ENOMEM;
+ goto err1;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = res->end - res->start + 1;
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, dev->name)) {
+ retval = -EBUSY;
+ goto err1;
+ }
+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ pr_debug("ioremap failed");
+ retval = -ENOMEM;
+ goto err2;
+ }
+ msp_start_hc(dev);
+
+ res = platform_get_resource(dev, IORESOURCE_IRQ, 0);
+ if (res == NULL) {
+ dev_err(&dev->dev, "No IRQ resource info for %s.\n", dev->name);
+ retval = -ENOMEM;
+ goto err3;
+ }
+
+ /* Map non-EHCI register spaces */
+ retval = usb_hcd_msp_map_regs(to_mspusb_device(dev));
+ if (retval != 0)
+ goto err3;
+
+ ehci = hcd_to_ehci(hcd);
+ ehci->big_endian_mmio = 1;
+ ehci->big_endian_desc = 1;
+
+
+ retval = usb_add_hcd(hcd, res->start, IRQF_SHARED);
+ if (retval == 0)
+ return 0;
+
+ usb_remove_hcd(hcd);
+err3:
+ msp_stop_hc(dev);
+ iounmap(hcd->regs);
+err2:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err1:
+ usb_put_hcd(hcd);
+
+ return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_msp_remove - shutdown processing for PMC MSP-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_msp_probe(), first invoking
+ * the HCD's stop() method. It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+void usb_hcd_msp_remove(struct usb_hcd *hcd, struct platform_device *dev)
+{
+ usb_remove_hcd(hcd);
+ msp_stop_hc(dev);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+/*-------------------------------------------------------------------------*/
+/*
+ * Wrapper around the main ehci_irq. Since both USB host controllers are
+ * sharing the same IRQ, need to first determine whether we're the intended
+ * recipient of this interrupt.
+ */
+static irqreturn_t ehci_msp_irq(struct usb_hcd *hcd)
+{
+ u32 int_src;
+ struct device *dev = hcd->self.controller;
+ struct platform_device *pdev;
+ struct mspusb_device *mdev;
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+ /* need to reverse-map a couple of containers to get our device */
+ pdev = to_platform_device(dev);
+ mdev = to_mspusb_device(pdev);
+
+ /* Check to see if this interrupt is for this host controller */
+ int_src = ehci_readl(ehci, &mdev->mab_regs->int_stat);
+ if (int_src & (1 << pdev->id))
+ return ehci_irq(hcd);
+
+ /* Not for this device */
+ return IRQ_NONE;
+}
+/*-------------------------------------------------------------------------*/
+#endif /* DUAL_USB */
+
+static const struct hc_driver ehci_msp_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "PMC MSP EHCI",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ .irq = ehci_msp_irq,
+#else
+ .irq = ehci_irq,
+#endif
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ehci_msp_setup,
+ .start = ehci_run,
+#ifdef CONFIG_PM
+ .suspend = ehci_msp_suspend,
+ .resume = ehci_msp_resume,
+#endif /*CONFIG_PM*/
+ .stop = ehci_stop,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ehci_hcd_msp_drv_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ pr_debug("In ehci_hcd_msp_drv_probe");
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ gpio_request(MSP_PIN_USB0_HOST_DEV, "USB0_HOST_DEV_GPIO");
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ gpio_request(MSP_PIN_USB1_HOST_DEV, "USB1_HOST_DEV_GPIO");
+#endif
+
+ ret = usb_hcd_msp_probe(&ehci_msp_hc_driver, pdev);
+
+ return ret;
+}
+
+static int ehci_hcd_msp_drv_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_hcd_msp_remove(hcd, pdev);
+
+ /* free TWI GPIO USB_HOST_DEV pin */
+ gpio_free(MSP_PIN_USB0_HOST_DEV);
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ gpio_free(MSP_PIN_USB1_HOST_DEV);
+#endif
+
+ return 0;
+}
+
+MODULE_ALIAS("pmcmsp-ehci");
+static struct platform_driver ehci_hcd_msp_driver = {
+ .probe = ehci_hcd_msp_drv_probe,
+ .remove = ehci_hcd_msp_drv_remove,
+ .driver = {
+ .name = "pmcmsp-ehci",
+ },
+};
--
1.7.0.4
--
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