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https://github.com/hardkernel/linux.git
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Merge remote-tracking branch 'lsk/v3.10/topic/usb' into linux-linaro-lsk
Conflicts: drivers/usb/phy/phy-ulpi.c
This commit is contained in:
Mark Brown
@@ -175,6 +175,13 @@ config USB_EHCI_HCD_SPEAR
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Enables support for the on-chip EHCI controller on
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ST SPEAr chips.
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config USB_EHCI_HCD_SYNOPSYS
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tristate "Support for Synopsys Host-AHB USB 2.0 controller"
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depends on USB_EHCI_HCD
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---help---
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Enable support for onchip USB controllers based on DesignWare USB 2.0
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Host-AHB Controller IP from Synopsys.
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config USB_EHCI_HCD_AT91
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tristate "Support for Atmel on-chip EHCI USB controller"
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depends on USB_EHCI_HCD && ARCH_AT91
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@@ -31,6 +31,7 @@ obj-$(CONFIG_USB_EHCI_HCD_OMAP) += ehci-omap.o
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obj-$(CONFIG_USB_EHCI_HCD_ORION) += ehci-orion.o
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obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o
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obj-$(CONFIG_USB_EHCI_S5P) += ehci-s5p.o
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obj-$(CONFIG_USB_EHCI_HCD_SYNOPSYS) += ehci-h20ahb.o
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obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
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obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o
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341
drivers/usb/host/ehci-h20ahb.c
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341
drivers/usb/host/ehci-h20ahb.c
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@@ -0,0 +1,341 @@
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/*
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* Copyright (C) 2007-2013 Texas Instruments, Inc.
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* Author: Vikram Pandita <vikram.pandita@ti.com>
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* Author: Anand Gadiyar <gadiyar@ti.com>
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* Author: Keshava Munegowda <keshava_mgowda@ti.com>
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* Author: Roger Quadros <rogerq@ti.com>
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*
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* Copyright (C) 2009 Nokia Corporation
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* Contact: Felipe Balbi <felipe.balbi@nokia.com>
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*
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* Based on ehci-omap.c - driver for USBHOST on OMAP3/4 processors
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/usb/ulpi.h>
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#include <linux/pm_runtime.h>
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#include <linux/gpio.h>
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#include <linux/clk.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include <linux/of.h>
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#include <linux/dma-mapping.h>
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#include "ehci.h"
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#define H20AHB_HS_USB_PORTS 1
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/* EHCI Synopsys-specific Register Set */
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#define EHCI_INSNREG04 (0xA0)
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#define EHCI_INSNREG04_DISABLE_UNSUSPEND (1 << 5)
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#define EHCI_INSNREG05_ULPI (0xA4)
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#define EHCI_INSNREG05_ULPI_CONTROL_SHIFT 31
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#define EHCI_INSNREG05_ULPI_PORTSEL_SHIFT 24
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#define EHCI_INSNREG05_ULPI_OPSEL_SHIFT 22
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#define EHCI_INSNREG05_ULPI_REGADD_SHIFT 16
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#define EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT 8
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#define EHCI_INSNREG05_ULPI_WRDATA_SHIFT 0
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#define DRIVER_DESC "H20AHB-EHCI Host Controller driver"
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static const char hcd_name[] = "ehci-h20ahb";
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/*-------------------------------------------------------------------------*/
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struct h20ahb_hcd {
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struct usb_phy *phy[H20AHB_HS_USB_PORTS]; /* one PHY for each port */
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int nports;
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};
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static inline void ehci_write(void __iomem *base, u32 reg, u32 val)
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{
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__raw_writel(val, base + reg);
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}
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static inline u32 ehci_read(void __iomem *base, u32 reg)
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{
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return __raw_readl(base + reg);
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}
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/* configure so an HC device and id are always provided */
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/* always called with process context; sleeping is OK */
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static struct hc_driver __read_mostly ehci_h20ahb_hc_driver;
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static const struct ehci_driver_overrides ehci_h20ahb_overrides __initdata = {
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.extra_priv_size = sizeof(struct h20ahb_hcd),
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};
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static int ehci_h20ahb_phy_read(struct usb_phy *x, u32 reg)
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{
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u32 val = (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT) |
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(1 << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT) |
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(3 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT) |
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(reg << EHCI_INSNREG05_ULPI_REGADD_SHIFT);
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ehci_write(x->io_priv, 0, val);
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while ((val = ehci_read(x->io_priv, 0)) &
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(1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT));
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return val & 0xff;
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}
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static int ehci_h20ahb_phy_write(struct usb_phy *x, u32 val, u32 reg)
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{
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u32 v = (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT) |
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(1 << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT) |
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(2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT) |
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(reg << EHCI_INSNREG05_ULPI_REGADD_SHIFT) |
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(val & 0xff);
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ehci_write(x->io_priv, 0, v);
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while ((v = ehci_read(x->io_priv, 0)) &
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(1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT));
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return 0;
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}
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static struct usb_phy_io_ops ehci_h20ahb_phy_io_ops = {
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.read = ehci_h20ahb_phy_read,
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.write = ehci_h20ahb_phy_write,
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};
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/**
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* ehci_hcd_h20ahb_probe - initialize Synopsis-based HCDs
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*
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* Allocates basic resources for this USB host controller, and
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* then invokes the start() method for the HCD associated with it
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* through the hotplug entry's driver_data.
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*/
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static int ehci_hcd_h20ahb_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct resource *res;
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struct usb_hcd *hcd;
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void __iomem *regs;
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int ret;
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int irq;
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int i;
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struct h20ahb_hcd *h20ahb;
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if (usb_disabled())
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return -ENODEV;
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/* if (!dev->parent) {
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dev_err(dev, "Missing parent device\n");
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return -ENODEV;
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}*/
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/* For DT boot, get platform data from parent. i.e. usbhshost */
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/*if (dev->of_node) {
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pdata = dev_get_platdata(dev->parent);
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dev->platform_data = pdata;
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}
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if (!pdata) {
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dev_err(dev, "Missing platform data\n");
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return -ENODEV;
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}*/
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irq = platform_get_irq(pdev, 0);
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if (irq < 0) {
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dev_err(dev, "EHCI irq failed\n");
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return -ENODEV;
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}
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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regs = devm_ioremap_resource(dev, res);
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if (IS_ERR(regs))
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return PTR_ERR(regs);
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/*
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* Right now device-tree probed devices don't get dma_mask set.
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* Since shared usb code relies on it, set it here for now.
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* Once we have dma capability bindings this can go away.
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*/
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ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
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if (ret)
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return ret;
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ret = -ENODEV;
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hcd = usb_create_hcd(&ehci_h20ahb_hc_driver, dev,
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dev_name(dev));
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if (!hcd) {
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dev_err(dev, "Failed to create HCD\n");
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return -ENOMEM;
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}
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hcd->rsrc_start = res->start;
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hcd->rsrc_len = resource_size(res);
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hcd->regs = regs;
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hcd_to_ehci(hcd)->caps = regs;
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h20ahb = (struct h20ahb_hcd *)hcd_to_ehci(hcd)->priv;
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h20ahb->nports = 1;
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platform_set_drvdata(pdev, hcd);
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/* get the PHY devices if needed */
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for (i = 0 ; i < h20ahb->nports ; i++) {
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struct usb_phy *phy;
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/* get the PHY device */
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#if 0
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if (dev->of_node)
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phy = devm_usb_get_phy_by_phandle(dev, "phys", i);
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else
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phy = devm_usb_get_phy_dev(dev, i);
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#endif
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phy = otg_ulpi_create(&ehci_h20ahb_phy_io_ops, 0);
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if (IS_ERR(phy)) {
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ret = PTR_ERR(phy);
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dev_err(dev, "Can't get PHY device for port %d: %d\n",
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i, ret);
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goto err_phy;
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}
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phy->dev = dev;
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usb_add_phy_dev(phy);
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h20ahb->phy[i] = phy;
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phy->io_priv = hcd->regs + EHCI_INSNREG05_ULPI;
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#if 0
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usb_phy_init(h20ahb->phy[i]);
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/* bring PHY out of suspend */
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usb_phy_set_suspend(h20ahb->phy[i], 0);
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#endif
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}
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/* make the first port's phy the one used by hcd as well */
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hcd->phy = h20ahb->phy[0];
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pm_runtime_enable(dev);
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pm_runtime_get_sync(dev);
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/*
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* An undocumented "feature" in the H20AHB EHCI controller,
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* causes suspended ports to be taken out of suspend when
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* the USBCMD.Run/Stop bit is cleared (for example when
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* we do ehci_bus_suspend).
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* This breaks suspend-resume if the root-hub is allowed
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* to suspend. Writing 1 to this undocumented register bit
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* disables this feature and restores normal behavior.
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*/
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ehci_write(regs, EHCI_INSNREG04,
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EHCI_INSNREG04_DISABLE_UNSUSPEND);
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ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
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if (ret) {
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dev_err(dev, "failed to add hcd with err %d\n", ret);
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goto err_pm_runtime;
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}
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device_wakeup_enable(hcd->self.controller);
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/*
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* Bring PHYs out of reset for non PHY modes.
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* Even though HSIC mode is a PHY-less mode, the reset
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* line exists between the chips and can be modelled
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* as a PHY device for reset control.
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*/
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for (i = 0; i < h20ahb->nports; i++) {
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usb_phy_init(h20ahb->phy[i]);
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/* bring PHY out of suspend */
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usb_phy_set_suspend(h20ahb->phy[i], 0);
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}
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return 0;
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err_pm_runtime:
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pm_runtime_put_sync(dev);
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err_phy:
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for (i = 0; i < h20ahb->nports; i++) {
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if (h20ahb->phy[i])
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usb_phy_shutdown(h20ahb->phy[i]);
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}
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usb_put_hcd(hcd);
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return ret;
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}
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/**
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* ehci_hcd_h20ahb_remove - shutdown processing for EHCI HCDs
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* @pdev: USB Host Controller being removed
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*
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* Reverses the effect of usb_ehci_hcd_h20ahb_probe(), first invoking
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* the HCD's stop() method. It is always called from a thread
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* context, normally "rmmod", "apmd", or something similar.
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*/
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static int ehci_hcd_h20ahb_remove(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct usb_hcd *hcd = dev_get_drvdata(dev);
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struct h20ahb_hcd *h20ahb = (struct h20ahb_hcd *)hcd_to_ehci(hcd)->priv;
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int i;
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usb_remove_hcd(hcd);
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for (i = 0; i < h20ahb->nports; i++) {
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if (h20ahb->phy[i])
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usb_phy_shutdown(h20ahb->phy[i]);
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}
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usb_put_hcd(hcd);
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pm_runtime_put_sync(dev);
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pm_runtime_disable(dev);
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return 0;
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}
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static const struct of_device_id h20ahb_ehci_dt_ids[] = {
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{ .compatible = "snps,ehci-h20ahb" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, h20ahb_ehci_dt_ids);
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static struct platform_driver ehci_hcd_h20ahb_driver = {
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.probe = ehci_hcd_h20ahb_probe,
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.remove = ehci_hcd_h20ahb_remove,
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.shutdown = usb_hcd_platform_shutdown,
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/*.suspend = ehci_hcd_h20ahb_suspend, */
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/*.resume = ehci_hcd_h20ahb_resume, */
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.driver = {
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.name = hcd_name,
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.of_match_table = h20ahb_ehci_dt_ids,
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}
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};
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/*-------------------------------------------------------------------------*/
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static int __init ehci_h20ahb_init(void)
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{
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if (usb_disabled())
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return -ENODEV;
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pr_info("%s: " DRIVER_DESC "\n", hcd_name);
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ehci_init_driver(&ehci_h20ahb_hc_driver, &ehci_h20ahb_overrides);
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return platform_driver_register(&ehci_hcd_h20ahb_driver);
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}
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module_init(ehci_h20ahb_init);
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static void __exit ehci_h20ahb_cleanup(void)
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{
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platform_driver_unregister(&ehci_hcd_h20ahb_driver);
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}
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module_exit(ehci_h20ahb_cleanup);
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MODULE_ALIAS("platform:ehci-h20ahb");
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MODULE_AUTHOR("Liviu Dudau <Liviu.Dudau@arm.com>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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@@ -48,6 +48,7 @@ static struct ulpi_info ulpi_ids[] = {
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ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"),
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ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB331x"),
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ULPI_INFO(ULPI_ID(0x0424, 0x0007), "SMSC USB3320"),
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ULPI_INFO(ULPI_ID(0x0424, 0x0009), "SMSC USB334x"),
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ULPI_INFO(ULPI_ID(0x0451, 0x1507), "TI TUSB1210"),
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};
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Block a user