7 files changed, 1 insertions, 239 deletions

diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index dfd3bf3aa4de..70b496dc18a0 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -337,11 +337,6 @@ static int debug_async_open(struct inode *, struct file *);
 static int debug_periodic_open(struct inode *, struct file *);
 static int debug_registers_open(struct inode *, struct file *);
 static int debug_async_open(struct inode *, struct file *);
-static ssize_t debug_lpm_read(struct file *file, char __user *user_buf,
-                                   size_t count, loff_t *ppos);
-static ssize_t debug_lpm_write(struct file *file, const char __user *buffer,
-                              size_t count, loff_t *ppos);
-static int debug_lpm_close(struct inode *inode, struct file *file);
 
 static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*);
 static int debug_close(struct inode *, struct file *);
@@ -367,14 +362,6 @@ static const struct file_operations debug_registers_fops = {
         .release        = debug_close,
         .llseek         = default_llseek,
 };
-static const struct file_operations debug_lpm_fops = {
-        .owner          = THIS_MODULE,
-        .open           = simple_open,
-        .read           = debug_lpm_read,
-        .write          = debug_lpm_write,
-        .release        = debug_lpm_close,
-        .llseek         = noop_llseek,
-};
 
 static struct dentry *ehci_debug_root;
 
@@ -956,86 +943,6 @@ static int debug_registers_open(struct inode *inode, struct file *file)
         return file->private_data ? 0 : -ENOMEM;
 }
 
-static int debug_lpm_close(struct inode *inode, struct file *file)
-{
-        return 0;
-}
-
-static ssize_t debug_lpm_read(struct file *file, char __user *user_buf,
-                                   size_t count, loff_t *ppos)
-{
-        /* TODO: show lpm stats */
-        return 0;
-}
-
-static ssize_t debug_lpm_write(struct file *file, const char __user *user_buf,
-                              size_t count, loff_t *ppos)
-{
-        struct usb_hcd          *hcd;
-        struct ehci_hcd         *ehci;
-        char buf[50];
-        size_t len;
-        u32 temp;
-        unsigned long port;
-        u32 __iomem     *portsc ;
-        u32 params;
-
-        hcd = bus_to_hcd(file->private_data);
-        ehci = hcd_to_ehci(hcd);
-
-        len = min(count, sizeof(buf) - 1);
-        if (copy_from_user(buf, user_buf, len))
-                return -EFAULT;
-        buf[len] = '\0';
-        if (len > 0 && buf[len - 1] == '\n')
-                buf[len - 1] = '\0';
-
-        if (strncmp(buf, "enable", 5) == 0) {
-                if (strict_strtoul(buf + 7, 10, &port))
-                        return -EINVAL;
-                params = ehci_readl(ehci, &ehci->caps->hcs_params);
-                if (port > HCS_N_PORTS(params)) {
-                        ehci_dbg(ehci, "ERR: LPM on bad port %lu\n", port);
-                        return -ENODEV;
-                }
-                portsc = &ehci->regs->port_status[port-1];
-                temp = ehci_readl(ehci, portsc);
-                if (!(temp & PORT_DEV_ADDR)) {
-                        ehci_dbg(ehci, "LPM: no device attached\n");
-                        return -ENODEV;
-                }
-                temp |= PORT_LPM;
-                ehci_writel(ehci, temp, portsc);
-                printk(KERN_INFO "force enable LPM for port %lu\n", port);
-        } else if (strncmp(buf, "hird=", 5) == 0) {
-                unsigned long hird;
-                if (strict_strtoul(buf + 5, 16, &hird))
-                        return -EINVAL;
-                printk(KERN_INFO "setting hird %s %lu\n", buf + 6, hird);
-                ehci->command = (ehci->command & ~CMD_HIRD) | (hird << 24);
-                ehci_writel(ehci, ehci->command, &ehci->regs->command);
-        } else if (strncmp(buf, "disable", 7) == 0) {
-                if (strict_strtoul(buf + 8, 10, &port))
-                        return -EINVAL;
-                params = ehci_readl(ehci, &ehci->caps->hcs_params);
-                if (port > HCS_N_PORTS(params)) {
-                        ehci_dbg(ehci, "ERR: LPM off bad port %lu\n", port);
-                        return -ENODEV;
-                }
-                portsc = &ehci->regs->port_status[port-1];
-                temp = ehci_readl(ehci, portsc);
-                if (!(temp & PORT_DEV_ADDR)) {
-                        ehci_dbg(ehci, "ERR: no device attached\n");
-                        return -ENODEV;
-                }
-                temp &= ~PORT_LPM;
-                ehci_writel(ehci, temp, portsc);
-                printk(KERN_INFO "disabled LPM for port %lu\n", port);
-        } else
-                return -EOPNOTSUPP;
-        return count;
-}
-
 static inline void create_debug_files (struct ehci_hcd *ehci)
 {
         struct usb_bus *bus = &ehci_to_hcd(ehci)->self;
@@ -1056,10 +963,6 @@ static inline void create_debug_files (struct ehci_hcd *ehci)
                                                     &debug_registers_fops))
                 goto file_error;
 
-        if (!debugfs_create_file("lpm", S_IRUGO|S_IWUSR, ehci->debug_dir, bus,
-                                                    &debug_lpm_fops))
-                goto file_error;
-
         return;
 
 file_error:
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 9c2afb516fe5..68dd1c99b1f5 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -39,7 +39,6 @@
 #include <linux/dma-mapping.h>
 #include <linux/debugfs.h>
 #include <linux/slab.h>
-#include <linux/uaccess.h>
 
 #include <asm/byteorder.h>
 #include <asm/io.h>
@@ -108,11 +107,6 @@ static bool ignore_oc = 0;
 module_param (ignore_oc, bool, S_IRUGO);
 MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
 
-/* for link power management(LPM) feature */
-static unsigned int hird;
-module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
-
 #define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
 
 /*-------------------------------------------------------------------------*/
@@ -318,7 +312,6 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
 
 #include "ehci-timer.c"
 #include "ehci-hub.c"
-#include "ehci-lpm.c"
 #include "ehci-mem.c"
 #include "ehci-q.c"
 #include "ehci-sched.c"
@@ -580,17 +573,6 @@ static int ehci_init(struct usb_hcd *hcd)
                 temp &= ~(3 << 2);
                 temp |= (EHCI_TUNE_FLS << 2);
         }
-        if (HCC_LPM(hcc_params)) {
-                /* support link power management EHCI 1.1 addendum */
-                ehci_dbg(ehci, "support lpm\n");
-                ehci->has_lpm = 1;
-                if (hird > 0xf) {
-                        ehci_dbg(ehci, "hird %d invalid, use default 0",
-                        hird);
-                        hird = 0;
-                }
-                temp |= hird << 24;
-        }
         ehci->command = temp;
 
         /* Accept arbitrarily long scatter-gather lists */
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index a7ec827ca2ca..a2c56cdd2c3a 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -777,11 +777,6 @@ static int ehci_hub_control (
                                                 status_reg);
                         break;
                 case USB_PORT_FEAT_C_CONNECTION:
-                        if (ehci->has_lpm) {
-                                /* clear PORTSC bits on disconnect */
-                                temp &= ~PORT_LPM;
-                                temp &= ~PORT_DEV_ADDR;
-                        }
                         ehci_writel(ehci, temp | PORT_CSC, status_reg);
                         break;
                 case USB_PORT_FEAT_C_OVER_CURRENT:
diff --git a/drivers/usb/host/ehci-lpm.c b/drivers/usb/host/ehci-lpm.c
deleted file mode 100644
index 6b092c1dff64..000000000000
--- a/drivers/usb/host/ehci-lpm.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/* ehci-lpm.c EHCI HCD LPM support code
- * Copyright (c) 2008 - 2010,  Intel Corporation.
- * Author: Jacob Pan <jacob.jun.pan@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * 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.
-*/
-
-/* this file is part of ehci-hcd.c */
-
-static int ehci_lpm_set_da(struct ehci_hcd *ehci, int dev_addr, int port_num)
-{
-        u32 __iomem portsc;
-
-        ehci_dbg(ehci, "set dev address %d for port %d\n", dev_addr, port_num);
-        if (port_num > HCS_N_PORTS(ehci->hcs_params)) {
-                ehci_dbg(ehci, "invalid port number %d\n", port_num);
-                return -ENODEV;
-        }
-        portsc = ehci_readl(ehci, &ehci->regs->port_status[port_num-1]);
-        portsc &= ~PORT_DEV_ADDR;
-        portsc |= dev_addr<<25;
-        ehci_writel(ehci, portsc, &ehci->regs->port_status[port_num-1]);
-        return 0;
-}
-
-/*
- * this function is used to check if the device support LPM
- * if yes, mark the PORTSC register with PORT_LPM bit
- */
-static int ehci_lpm_check(struct ehci_hcd *ehci, int port)
-{
-        u32 __iomem     *portsc ;
-        u32 val32;
-        int retval;
-
-        portsc = &ehci->regs->port_status[port-1];
-        val32 = ehci_readl(ehci, portsc);
-        if (!(val32 & PORT_DEV_ADDR)) {
-                ehci_dbg(ehci, "LPM: no device attached\n");
-                return -ENODEV;
-        }
-        val32 |= PORT_LPM;
-        ehci_writel(ehci, val32, portsc);
-        msleep(5);
-        val32 |= PORT_SUSPEND;
-        ehci_dbg(ehci, "Sending LPM 0x%08x to port %d\n", val32, port);
-        ehci_writel(ehci, val32, portsc);
-        /* wait for ACK */
-        msleep(10);
-        retval = handshake(ehci, &ehci->regs->port_status[port-1], PORT_SSTS,
-                        PORTSC_SUSPEND_STS_ACK, 125);
-        dbg_port(ehci, "LPM", port, val32);
-        if (retval != -ETIMEDOUT) {
-                ehci_dbg(ehci, "LPM: device ACK for LPM\n");
-                val32 |= PORT_LPM;
-                /*
-                 * now device should be in L1 sleep, let's wake up the device
-                 * so that we can complete enumeration.
-                 */
-                ehci_writel(ehci, val32, portsc);
-                msleep(10);
-                val32 |= PORT_RESUME;
-                ehci_writel(ehci, val32, portsc);
-        } else {
-                ehci_dbg(ehci, "LPM: device does not ACK, disable LPM %d\n",
-                        retval);
-                val32 &= ~PORT_LPM;
-                retval = -ETIMEDOUT;
-                ehci_writel(ehci, val32, portsc);
-        }
-
-        return retval;
-}
-
-static int __maybe_unused ehci_update_device(struct usb_hcd *hcd,
-                struct usb_device *udev)
-{
-        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-        int rc = 0;
-
-        if (!udev->parent) /* udev is root hub itself, impossible */
-                rc = -1;
-        /* we only support lpm device connected to root hub yet */
-        if (ehci->has_lpm && !udev->parent->parent) {
-                rc = ehci_lpm_set_da(ehci, udev->devnum, udev->portnum);
-                if (!rc)
-                        rc = ehci_lpm_check(ehci, udev->portnum);
-        }
-        return rc;
-}
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 7880ba621f89..e17330ae0aee 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -202,11 +202,6 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                 break;
         case PCI_VENDOR_ID_INTEL:
                 ehci->need_io_watchdog = 0;
-                if (pdev->device == 0x0806 || pdev->device == 0x0811
-                                || pdev->device == 0x0829) {
-                        ehci_info(ehci, "disable lpm for langwell/penwell\n");
-                        ehci->has_lpm = 0;
-                }
                 break;
         case PCI_VENDOR_ID_NVIDIA:
                 switch (pdev->device) {
@@ -216,8 +211,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                  * devices with PPCD enabled.
                  */
                 case 0x0d9d:
-                        ehci_info(ehci, "disable lpm/ppcd for nvidia mcp89");
-                        ehci->has_lpm = 0;
+                        ehci_info(ehci, "disable ppcd for nvidia mcp89\n");
                         ehci->has_ppcd = 0;
                         ehci->command &= ~CMD_PPCEE;
                         break;
@@ -425,11 +419,6 @@ static const struct hc_driver ehci_pci_hc_driver = {
         .relinquish_port =      ehci_relinquish_port,
         .port_handed_over =     ehci_port_handed_over,
 
-        /*
-         * call back when device connected and addressed
-         */
-        .update_device =        ehci_update_device,
-
         .clear_tt_buffer_complete       = ehci_clear_tt_buffer_complete,
 };
 
diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c
index c6fe0bb619cb..11695d5b9d86 100644
--- a/drivers/usb/host/ehci-vt8500.c
+++ b/drivers/usb/host/ehci-vt8500.c
@@ -61,11 +61,6 @@ static const struct hc_driver vt8500_ehci_hc_driver = {
         .relinquish_port        = ehci_relinquish_port,
         .port_handed_over       = ehci_port_handed_over,
 
-        /*
-         * call back when device connected and addressed
-         */
-        .update_device =        ehci_update_device,
-
         .clear_tt_buffer_complete       = ehci_clear_tt_buffer_complete,
 };
 
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index ec948c3b1cea..2262dcdaa3c1 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -206,7 +206,6 @@ struct ehci_hcd {			/* one per controller */
         #define OHCI_HCCTRL_LEN         0x4
         __hc32                  *ohci_hcctrl_reg;
         unsigned                has_hostpc:1;
-        unsigned                has_lpm:1;  /* support link power management */
         unsigned                has_ppcd:1; /* support per-port change bits */
         u8                      sbrn;           /* packed release number */