Release 4.7 drivers/usb/host/xhci-plat.c
/*
* xhci-plat.c - xHCI host controller driver platform Bus Glue.
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
* Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*
* A lot of code borrowed from the Linux xHCI driver.
*
* 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.
*/
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/usb/phy.h>
#include <linux/slab.h>
#include <linux/usb/xhci_pdriver.h>
#include <linux/acpi.h>
#include "xhci.h"
#include "xhci-plat.h"
#include "xhci-mvebu.h"
#include "xhci-rcar.h"
static struct hc_driver __read_mostly xhci_plat_hc_driver;
static int xhci_plat_setup(struct usb_hcd *hcd);
static int xhci_plat_start(struct usb_hcd *hcd);
static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
.extra_priv_size = sizeof(struct xhci_plat_priv),
.reset = xhci_plat_setup,
.start = xhci_plat_start,
};
static void xhci_priv_plat_start(struct usb_hcd *hcd)
{
struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
if (priv->plat_start)
priv->plat_start(hcd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| felipe balbi | felipe balbi | 16 | 47.06% | 1 | 33.33% |
| yoshihiro shimoda | yoshihiro shimoda | 11 | 32.35% | 1 | 33.33% |
| sebastian andrzej siewior | sebastian andrzej siewior | 7 | 20.59% | 1 | 33.33% |
| Total | 34 | 100.00% | 3 | 100.00% |
static int xhci_priv_init_quirk(struct usb_hcd *hcd)
{
struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
if (!priv->init_quirk)
return 0;
return priv->init_quirk(hcd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| felipe balbi | felipe balbi | 35 | 89.74% | 1 | 50.00% |
| yoshihiro shimoda | yoshihiro shimoda | 4 | 10.26% | 1 | 50.00% |
| Total | 39 | 100.00% | 2 | 100.00% |
static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
{
/*
* As of now platform drivers don't provide MSI support so we ensure
* here that the generic code does not try to make a pci_dev from our
* dev struct in order to setup MSI
*/
xhci->quirks |= XHCI_PLAT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| felipe balbi | felipe balbi | 17 | 73.91% | 1 | 33.33% |
| yoshihiro shimoda | yoshihiro shimoda | 5 | 21.74% | 1 | 33.33% |
| sebastian andrzej siewior | sebastian andrzej siewior | 1 | 4.35% | 1 | 33.33% |
| Total | 23 | 100.00% | 3 | 100.00% |
/* called during probe() after chip reset completes */
static int xhci_plat_setup(struct usb_hcd *hcd)
{
int ret;
ret = xhci_priv_init_quirk(hcd);
if (ret)
return ret;
return xhci_gen_setup(hcd, xhci_plat_quirks);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sebastian andrzej siewior | sebastian andrzej siewior | 19 | 52.78% | 1 | 33.33% |
| yoshihiro shimoda | yoshihiro shimoda | 16 | 44.44% | 1 | 33.33% |
| felipe balbi | felipe balbi | 1 | 2.78% | 1 | 33.33% |
| Total | 36 | 100.00% | 3 | 100.00% |
static int xhci_plat_start(struct usb_hcd *hcd)
{
xhci_priv_plat_start(hcd);
return xhci_run(hcd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| yoshihiro shimoda | yoshihiro shimoda | 21 | 95.45% | 2 | 66.67% |
| felipe balbi | felipe balbi | 1 | 4.55% | 1 | 33.33% |
| Total | 22 | 100.00% | 3 | 100.00% |
#ifdef CONFIG_OF
static const struct xhci_plat_priv xhci_plat_marvell_armada = {
.init_quirk = xhci_mvebu_mbus_init_quirk,
};
static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
.init_quirk = xhci_rcar_init_quirk,
.plat_start = xhci_rcar_start,
};
static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2,
.init_quirk = xhci_rcar_init_quirk,
.plat_start = xhci_rcar_start,
};
static const struct of_device_id usb_xhci_of_match[] = {
{
.compatible = "generic-xhci",
}, {
.compatible = "xhci-platform",
}, {
.compatible = "marvell,armada-375-xhci",
.data = &xhci_plat_marvell_armada,
}, {
.compatible = "marvell,armada-380-xhci",
.data = &xhci_plat_marvell_armada,
}, {
.compatible = "renesas,xhci-r8a7790",
.data = &xhci_plat_renesas_rcar_gen2,
}, {
.compatible = "renesas,xhci-r8a7791",
.data = &xhci_plat_renesas_rcar_gen2,
}, {
.compatible = "renesas,xhci-r8a7793",
.data = &xhci_plat_renesas_rcar_gen2,
}, {
.compatible = "renesas,xhci-r8a7795",
.data = &xhci_plat_renesas_rcar_gen3,
}, {
.compatible = "renesas,rcar-gen2-xhci",
.data = &xhci_plat_renesas_rcar_gen2,
}, {
.compatible = "renesas,rcar-gen3-xhci",
.data = &xhci_plat_renesas_rcar_gen3,
},
{},
};
MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
#endif
static int xhci_plat_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct usb_xhci_pdata *pdata = dev_get_platdata(&pdev->dev);
const struct of_device_id *match;
const struct hc_driver *driver;
struct xhci_hcd *xhci;
struct resource *res;
struct usb_hcd *hcd;
struct clk *clk;
int ret;
int irq;
if (usb_disabled())
return -ENODEV;
driver = &xhci_plat_hc_driver;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return -ENODEV;
/* Try to set 64-bit DMA first */
if (WARN_ON(!pdev->dev.dma_mask))
/* Platform did not initialize dma_mask */
ret = dma_coerce_mask_and_coherent(&pdev->dev,
DMA_BIT_MASK(64));
else
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
/* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
if (ret) {
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
}
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto put_hcd;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
/*
* Not all platforms have a clk so it is not an error if the
* clock does not exists.
*/
clk = devm_clk_get(&pdev->dev, NULL);
if (!IS_ERR(clk)) {
ret = clk_prepare_enable(clk);
if (ret)
goto put_hcd;
} else if (PTR_ERR(clk) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto put_hcd;
}
xhci = hcd_to_xhci(hcd);
match = of_match_node(usb_xhci_of_match, node);
if (match) {
const struct xhci_plat_priv *priv_match = match->data;
struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
/* Just copy data for now */
if (priv_match)
*priv = *priv_match;
}
device_wakeup_enable(hcd->self.controller);
xhci->clk = clk;
xhci->main_hcd = hcd;
xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
dev_name(&pdev->dev), hcd);
if (!xhci->shared_hcd) {
ret = -ENOMEM;
goto disable_clk;
}
if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
(pdata && pdata->usb3_lpm_capable))
xhci->quirks |= XHCI_LPM_SUPPORT;
if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
hcd->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
if (IS_ERR(hcd->usb_phy)) {
ret = PTR_ERR(hcd->usb_phy);
if (ret == -EPROBE_DEFER)
goto put_usb3_hcd;
hcd->usb_phy = NULL;
} else {
ret = usb_phy_init(hcd->usb_phy);
if (ret)
goto put_usb3_hcd;
}
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret)
goto disable_usb_phy;
ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
if (ret)
goto dealloc_usb2_hcd;
return 0;
dealloc_usb2_hcd:
usb_remove_hcd(hcd);
disable_usb_phy:
usb_phy_shutdown(hcd->usb_phy);
put_usb3_hcd:
usb_put_hcd(xhci->shared_hcd);
disable_clk:
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
put_hcd:
usb_put_hcd(hcd);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sebastian andrzej siewior | sebastian andrzej siewior | 209 | 31.91% | 1 | 5.88% |
| maxime ripard | maxime ripard | 84 | 12.82% | 2 | 11.76% |
| gregory clement | gregory clement | 66 | 10.08% | 2 | 11.76% |
| pratyush anand | pratyush anand | 51 | 7.79% | 1 | 5.88% |
| yoshihiro shimoda | yoshihiro shimoda | 51 | 7.79% | 1 | 5.88% |
| duc dang | duc dang | 42 | 6.41% | 1 | 5.88% |
| roger quadros | roger quadros | 33 | 5.04% | 2 | 11.76% |
| xenia ragiadakou | xenia ragiadakou | 32 | 4.89% | 1 | 5.88% |
| varka bhadram | varka bhadram | 23 | 3.51% | 1 | 5.88% |
| thomas petazzoni | thomas petazzoni | 21 | 3.21% | 1 | 5.88% |
| oliver neukum | oliver neukum | 19 | 2.90% | 1 | 5.88% |
| himangi saraogi | himangi saraogi | 14 | 2.14% | 1 | 5.88% |
| peter chen | peter chen | 9 | 1.37% | 1 | 5.88% |
| andrew bresticker | andrew bresticker | 1 | 0.15% | 1 | 5.88% |
| Total | 655 | 100.00% | 17 | 100.00% |
static int xhci_plat_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct clk *clk = xhci->clk;
usb_remove_hcd(xhci->shared_hcd);
usb_phy_shutdown(hcd->usb_phy);
usb_remove_hcd(hcd);
usb_put_hcd(xhci->shared_hcd);
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
usb_put_hcd(hcd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sebastian andrzej siewior | sebastian andrzej siewior | 53 | 60.92% | 1 | 20.00% |
| gregory clement | gregory clement | 21 | 24.14% | 1 | 20.00% |
| maxime ripard | maxime ripard | 7 | 8.05% | 1 | 20.00% |
| roger quadros | roger quadros | 5 | 5.75% | 1 | 20.00% |
| george cherian | george cherian | 1 | 1.15% | 1 | 20.00% |
| Total | 87 | 100.00% | 5 | 100.00% |
#ifdef CONFIG_PM_SLEEP
static int xhci_plat_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
/*
* xhci_suspend() needs `do_wakeup` to know whether host is allowed
* to do wakeup during suspend. Since xhci_plat_suspend is currently
* only designed for system suspend, device_may_wakeup() is enough
* to dertermine whether host is allowed to do wakeup. Need to
* reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
* also applies to runtime suspend.
*/
return xhci_suspend(xhci, device_may_wakeup(dev));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| vikas sajjan | vikas sajjan | 37 | 86.05% | 1 | 50.00% |
| lu baolu | lu baolu | 6 | 13.95% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
static int xhci_plat_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
return xhci_resume(xhci, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| vikas sajjan | vikas sajjan | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
static const struct dev_pm_ops xhci_plat_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
};
#define DEV_PM_OPS (&xhci_plat_pm_ops)
#else
#define DEV_PM_OPS NULL
#endif /* CONFIG_PM */
static const struct acpi_device_id usb_xhci_acpi_match[] = {
/* XHCI-compliant USB Controller */
{ "PNP0D10", },
{ }
};
MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
static struct platform_driver usb_xhci_driver = {
.probe = xhci_plat_probe,
.remove = xhci_plat_remove,
.driver = {
.name = "xhci-hcd",
.pm = DEV_PM_OPS,
.of_match_table = of_match_ptr(usb_xhci_of_match),
.acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
},
};
MODULE_ALIAS("platform:xhci-hcd");
static int __init xhci_plat_init(void)
{
xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
return platform_driver_register(&usb_xhci_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sebastian andrzej siewior | sebastian andrzej siewior | 13 | 52.00% | 1 | 25.00% |
| andrew bresticker | andrew bresticker | 10 | 40.00% | 2 | 50.00% |
| roger quadros | roger quadros | 2 | 8.00% | 1 | 25.00% |
| Total | 25 | 100.00% | 4 | 100.00% |
module_init(xhci_plat_init);
static void __exit xhci_plat_exit(void)
{
platform_driver_unregister(&usb_xhci_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sebastian andrzej siewior | sebastian andrzej siewior | 12 | 80.00% | 1 | 50.00% |
| andrew bresticker | andrew bresticker | 3 | 20.00% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
module_exit(xhci_plat_exit);
MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sebastian andrzej siewior | sebastian andrzej siewior | 358 | 24.86% | 1 | 2.78% |
| yoshihiro shimoda | yoshihiro shimoda | 273 | 18.96% | 7 | 19.44% |
| vikas sajjan | vikas sajjan | 111 | 7.71% | 1 | 2.78% |
| gregory clement | gregory clement | 97 | 6.74% | 4 | 11.11% |
| maxime ripard | maxime ripard | 94 | 6.53% | 2 | 5.56% |
| felipe balbi | felipe balbi | 93 | 6.46% | 1 | 2.78% |
| roger quadros | roger quadros | 79 | 5.49% | 3 | 8.33% |
| duc dang | duc dang | 76 | 5.28% | 2 | 5.56% |
| pratyush anand | pratyush anand | 54 | 3.75% | 1 | 2.78% |
| andrew bresticker | andrew bresticker | 40 | 2.78% | 2 | 5.56% |
| xenia ragiadakou | xenia ragiadakou | 34 | 2.36% | 1 | 2.78% |
| simon horman | simon horman | 25 | 1.74% | 1 | 2.78% |
| varka bhadram | varka bhadram | 23 | 1.60% | 1 | 2.78% |
| thomas petazzoni | thomas petazzoni | 21 | 1.46% | 1 | 2.78% |
| oliver neukum | oliver neukum | 19 | 1.32% | 1 | 2.78% |
| himangi saraogi | himangi saraogi | 14 | 0.97% | 1 | 2.78% |
| al cooper | al cooper | 10 | 0.69% | 1 | 2.78% |
| peter chen | peter chen | 9 | 0.62% | 1 | 2.78% |
| lu baolu | lu baolu | 6 | 0.42% | 1 | 2.78% |
| julia lawall | julia lawall | 2 | 0.14% | 1 | 2.78% |
| george cherian | george cherian | 1 | 0.07% | 1 | 2.78% |
| arnd bergmann | arnd bergmann | 1 | 0.07% | 1 | 2.78% |
| Total | 1440 | 100.00% | 36 | 100.00% |
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