Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC-specific updates from Arnd Bergmann:
 "This is a larger set of new functionality for the existing SoC
  families, including:

   - vt8500 gains support for new CPU cores, notably the Cortex-A9 based
     wm8850

   - prima2 gains support for the "marco" SoC family, its SMP based
     cousin

   - tegra gains support for the new Tegra4 (Tegra114) family

   - socfpga now supports a newer version of the hardware including SMP

   - i.mx31 and bcm2835 are now using DT probing for their clocks

   - lots of updates for sh-mobile

   - OMAP updates for clocks, power management and USB

   - i.mx6q and tegra now support cpuidle

   - kirkwood now supports PCIe hot plugging

   - tegra clock support is updated

   - tegra USB PHY probing gets implemented diffently"

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (148 commits)
  ARM: prima2: remove duplicate v7_invalidate_l1
  ARM: shmobile: r8a7779: Correct TMU clock support again
  ARM: prima2: fix __init section for cpu hotplug
  ARM: OMAP: Consolidate OMAP USB-HS platform data (part 3/3)
  ARM: OMAP: Consolidate OMAP USB-HS platform data (part 1/3)
  arm: socfpga: Add SMP support for actual socfpga harware
  arm: Add v7_invalidate_l1 to cache-v7.S
  arm: socfpga: Add entries to enable make dtbs socfpga
  arm: socfpga: Add new device tree source for actual socfpga HW
  ARM: tegra: sort Kconfig selects for Tegra114
  ARM: tegra: enable ARCH_REQUIRE_GPIOLIB for Tegra114
  ARM: tegra: Fix build error w/ ARCH_TEGRA_114_SOC w/o ARCH_TEGRA_3x_SOC
  ARM: tegra: Fix build error for gic update
  ARM: tegra: remove empty tegra_smp_init_cpus()
  ARM: shmobile: Register ARM architected timer
  ARM: MARCO: fix the build issue due to gic-vic-to-irqchip move
  ARM: shmobile: r8a7779: Correct TMU clock support
  ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT
  ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles
  ARM: mxs: use apbx bus clock to drive the timers on timrotv2
  ...

1 files changed, 65 insertions, 32 deletions

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index acf17556bd87..568aecc7075b 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -2,7 +2,7 @@
  * EHCI-compliant USB host controller driver for NVIDIA Tegra SoCs
  *
  * Copyright (C) 2010 Google, Inc.
- * Copyright (C) 2009 NVIDIA Corporation
+ * Copyright (C) 2009 - 2013 NVIDIA Corporation
  *
  * 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
@@ -26,23 +26,28 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/pm_runtime.h>
-
+#include <linux/usb/ehci_def.h>
 #include <linux/usb/tegra_usb_phy.h>
 
 #define TEGRA_USB_BASE                  0xC5000000
 #define TEGRA_USB2_BASE                 0xC5004000
 #define TEGRA_USB3_BASE                 0xC5008000
 
+/* PORTSC registers */
+#define TEGRA_USB_PORTSC1                       0x184
+#define TEGRA_USB_PORTSC1_PTS(x)        (((x) & 0x3) << 30)
+#define TEGRA_USB_PORTSC1_PHCD  (1 << 23)
+
 #define TEGRA_USB_DMA_ALIGN 32
 
 struct tegra_ehci_hcd {
         struct ehci_hcd *ehci;
         struct tegra_usb_phy *phy;
         struct clk *clk;
-        struct clk *emc_clk;
         struct usb_phy *transceiver;
         int host_resumed;
         int port_resuming;
+        bool needs_double_reset;
         enum tegra_usb_phy_port_speed port_speed;
 };
 
@@ -50,9 +55,8 @@ static void tegra_ehci_power_up(struct usb_hcd *hcd)
 {
         struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller);
 
-        clk_prepare_enable(tegra->emc_clk);
         clk_prepare_enable(tegra->clk);
-        usb_phy_set_suspend(&tegra->phy->u_phy, 0);
+        usb_phy_set_suspend(hcd->phy, 0);
         tegra->host_resumed = 1;
 }
 
@@ -61,9 +65,8 @@ static void tegra_ehci_power_down(struct usb_hcd *hcd)
         struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller);
 
         tegra->host_resumed = 0;
-        usb_phy_set_suspend(&tegra->phy->u_phy, 1);
+        usb_phy_set_suspend(hcd->phy, 1);
         clk_disable_unprepare(tegra->clk);
-        clk_disable_unprepare(tegra->emc_clk);
 }
 
 static int tegra_ehci_internal_port_reset(
@@ -156,7 +159,7 @@ static int tegra_ehci_hub_control(
                 if (tegra->port_resuming && !(temp & PORT_SUSPEND)) {
                         /* Resume completed, re-enable disconnect detection */
                         tegra->port_resuming = 0;
-                        tegra_usb_phy_postresume(tegra->phy);
+                        tegra_usb_phy_postresume(hcd->phy);
                 }
         }
 
@@ -184,7 +187,7 @@ static int tegra_ehci_hub_control(
         }
 
         /* For USB1 port we need to issue Port Reset twice internally */
-        if (tegra->phy->instance == 0 &&
+        if (tegra->needs_double_reset &&
            (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_RESET)) {
                 spin_unlock_irqrestore(&ehci->lock, flags);
                 return tegra_ehci_internal_port_reset(ehci, status_reg);
@@ -209,7 +212,7 @@ static int tegra_ehci_hub_control(
                         goto done;
 
                 /* Disable disconnect detection during port resume */
-                tegra_usb_phy_preresume(tegra->phy);
+                tegra_usb_phy_preresume(hcd->phy);
 
                 ehci->reset_done[wIndex-1] = jiffies + msecs_to_jiffies(25);
 
@@ -473,7 +476,7 @@ static int controller_resume(struct device *dev)
         }
 
         /* Force the phy to keep data lines in suspend state */
-        tegra_ehci_phy_restore_start(tegra->phy, tegra->port_speed);
+        tegra_ehci_phy_restore_start(hcd->phy, tegra->port_speed);
 
         /* Enable host mode */
         tdi_reset(ehci);
@@ -540,17 +543,17 @@ static int controller_resume(struct device *dev)
                 }
         }
 
-        tegra_ehci_phy_restore_end(tegra->phy);
+        tegra_ehci_phy_restore_end(hcd->phy);
         goto done;
 
  restart:
         if (tegra->port_speed <= TEGRA_USB_PHY_PORT_SPEED_HIGH)
-                tegra_ehci_phy_restore_end(tegra->phy);
+                tegra_ehci_phy_restore_end(hcd->phy);
 
         tegra_ehci_restart(hcd);
 
  done:
-        tegra_usb_phy_preresume(tegra->phy);
+        tegra_usb_phy_preresume(hcd->phy);
         tegra->port_resuming = 1;
         return 0;
 }
@@ -604,6 +607,37 @@ static const struct dev_pm_ops tegra_ehci_pm_ops = {
 
 #endif
 
+/* Bits of PORTSC1, which will get cleared by writing 1 into them */
+#define TEGRA_PORTSC1_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
+
+void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val)
+{
+        unsigned long val;
+        struct usb_hcd *hcd = bus_to_hcd(x->otg->host);
+        void __iomem *base = hcd->regs;
+
+        val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
+        val &= ~TEGRA_USB_PORTSC1_PTS(3);
+        val |= TEGRA_USB_PORTSC1_PTS(pts_val & 3);
+        writel(val, base + TEGRA_USB_PORTSC1);
+}
+EXPORT_SYMBOL_GPL(tegra_ehci_set_pts);
+
+void tegra_ehci_set_phcd(struct usb_phy *x, bool enable)
+{
+        unsigned long val;
+        struct usb_hcd *hcd = bus_to_hcd(x->otg->host);
+        void __iomem *base = hcd->regs;
+
+        val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
+        if (enable)
+                val |= TEGRA_USB_PORTSC1_PHCD;
+        else
+                val &= ~TEGRA_USB_PORTSC1_PHCD;
+        writel(val, base + TEGRA_USB_PORTSC1);
+}
+EXPORT_SYMBOL_GPL(tegra_ehci_set_phcd);
+
 static u64 tegra_ehci_dma_mask = DMA_BIT_MASK(32);
 
 static int tegra_ehci_probe(struct platform_device *pdev)
@@ -615,6 +649,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
         int err = 0;
         int irq;
         int instance = pdev->id;
+        struct usb_phy *u_phy;
 
         pdata = pdev->dev.platform_data;
         if (!pdata) {
@@ -656,15 +691,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
         if (err)
                 goto fail_clk;
 
-        tegra->emc_clk = devm_clk_get(&pdev->dev, "emc");
-        if (IS_ERR(tegra->emc_clk)) {
-                dev_err(&pdev->dev, "Can't get emc clock\n");
-                err = PTR_ERR(tegra->emc_clk);
-                goto fail_emc_clk;
-        }
-
-        clk_prepare_enable(tegra->emc_clk);
-        clk_set_rate(tegra->emc_clk, 400000000);
+        tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node,
+                "nvidia,needs-double-reset");
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {
@@ -712,9 +740,19 @@ static int tegra_ehci_probe(struct platform_device *pdev)
                 goto fail_io;
         }
 
-        usb_phy_init(&tegra->phy->u_phy);
+        hcd->phy = u_phy = &tegra->phy->u_phy;
+        usb_phy_init(hcd->phy);
+
+        u_phy->otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg),
+                             GFP_KERNEL);
+        if (!u_phy->otg) {
+                dev_err(&pdev->dev, "Failed to alloc memory for otg\n");
+                err = -ENOMEM;
+                goto fail_io;
+        }
+        u_phy->otg->host = hcd_to_bus(hcd);
 
-        err = usb_phy_set_suspend(&tegra->phy->u_phy, 0);
+        err = usb_phy_set_suspend(hcd->phy, 0);
         if (err) {
                 dev_err(&pdev->dev, "Failed to power on the phy\n");
                 goto fail;
@@ -760,10 +798,8 @@ fail:
         if (!IS_ERR_OR_NULL(tegra->transceiver))
                 otg_set_host(tegra->transceiver->otg, NULL);
 #endif
-        usb_phy_shutdown(&tegra->phy->u_phy);
+        usb_phy_shutdown(hcd->phy);
 fail_io:
-        clk_disable_unprepare(tegra->emc_clk);
-fail_emc_clk:
         clk_disable_unprepare(tegra->clk);
 fail_clk:
         usb_put_hcd(hcd);
@@ -784,15 +820,12 @@ static int tegra_ehci_remove(struct platform_device *pdev)
                 otg_set_host(tegra->transceiver->otg, NULL);
 #endif
 
+        usb_phy_shutdown(hcd->phy);
         usb_remove_hcd(hcd);
         usb_put_hcd(hcd);
 
-        usb_phy_shutdown(&tegra->phy->u_phy);
-
         clk_disable_unprepare(tegra->clk);
 
-        clk_disable_unprepare(tegra->emc_clk);
-
         return 0;
 }