Release 4.7 drivers/usb/host/ehci-orion.c
/*
* drivers/usb/host/ehci-orion.c
*
* Tzachi Perelstein <tzachi@marvell.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mbus.h>
#include <linux/clk.h>
#include <linux/platform_data/usb-ehci-orion.h>
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include "ehci.h"
#define rdl(off) readl_relaxed(hcd->regs + (off))
#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
#define USB_CMD 0x140
#define USB_CMD_RUN BIT(0)
#define USB_CMD_RESET BIT(1)
#define USB_MODE 0x1a8
#define USB_MODE_MASK GENMASK(1, 0)
#define USB_MODE_DEVICE 0x2
#define USB_MODE_HOST 0x3
#define USB_MODE_SDIS BIT(4)
#define USB_CAUSE 0x310
#define USB_MASK 0x314
#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
#define USB_IPG 0x360
#define USB_PHY_PWR_CTRL 0x400
#define USB_PHY_TX_CTRL 0x420
#define USB_PHY_RX_CTRL 0x430
#define USB_PHY_IVREF_CTRL 0x440
#define USB_PHY_TST_GRP_CTRL 0x450
#define DRIVER_DESC "EHCI orion driver"
#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
struct orion_ehci_hcd {
struct clk *clk;
struct phy *phy;
};
static const char hcd_name[] = "ehci-orion";
static struct hc_driver __read_mostly ehci_orion_hc_driver;
/*
* Implement Orion USB controller specification guidelines
*/
static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
{
/* The below GLs are according to the Orion Errata document */
/*
* Clear interrupt cause and mask
*/
wrl(USB_CAUSE, 0);
wrl(USB_MASK, 0);
/*
* Reset controller
*/
wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
while (rdl(USB_CMD) & USB_CMD_RESET);
/*
* GL# USB-10: Set IPG for non start of frame packets
* Bits[14:8]=0xc
*/
wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
/*
* GL# USB-9: USB 2.0 Power Control
* BG_VSEL[7:6]=0x1
*/
wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
/*
* GL# USB-1: USB PHY Tx Control - force calibration to '8'
* TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
*/
wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
/*
* GL# USB-3 GL# USB-9: USB PHY Rx Control
* RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
* CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
*/
wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
/*
* GL# USB-3 GL# USB-9: USB PHY IVREF Control
* PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
*/
wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
/*
* GL# USB-3 GL# USB-9: USB PHY Test Group Control
* REG_FIFO_SQ_RST[15]=0
*/
wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
/*
* Stop and reset controller
*/
wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
while (rdl(USB_CMD) & USB_CMD_RESET);
/*
* GL# USB-5 Streaming disable REG_USB_MODE[4]=1
* TBD: This need to be done after each reset!
* GL# USB-4 Setup USB Host mode
*/
wrl(USB_MODE, USB_MODE_SDIS | USB_MODE_HOST);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
tzachi perelstein | tzachi perelstein | 190 | 95.00% | 1 | 33.33% |
thomas petazzoni | thomas petazzoni | 8 | 4.00% | 1 | 33.33% |
ronen shitrit | ronen shitrit | 2 | 1.00% | 1 | 33.33% |
| Total | 200 | 100.00% | 3 | 100.00% |
static void
ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
const struct mbus_dram_target_info *dram)
{
int i;
for (i = 0; i < 4; i++) {
wrl(USB_WINDOW_CTRL(i), 0);
wrl(USB_WINDOW_BASE(i), 0);
}
for (i = 0; i < dram->num_cs; i++) {
const struct mbus_dram_window *cs = dram->cs + i;
wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
(cs->mbus_attr << 8) |
(dram->mbus_dram_target_id << 4) | 1);
wrl(USB_WINDOW_BASE(i), cs->base);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
lennert buytenhek | lennert buytenhek | 132 | 98.51% | 1 | 50.00% |
andrew lunn | andrew lunn | 2 | 1.49% | 1 | 50.00% |
| Total | 134 | 100.00% | 2 | 100.00% |
static const struct ehci_driver_overrides orion_overrides __initconst = {
.extra_priv_size = sizeof(struct orion_ehci_hcd),
};
static int ehci_orion_drv_probe(struct platform_device *pdev)
{
struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
const struct mbus_dram_target_info *dram;
struct resource *res;
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
void __iomem *regs;
int irq, err;
enum orion_ehci_phy_ver phy_version;
struct orion_ehci_hcd *priv;
if (usb_disabled())
return -ENODEV;
pr_debug("Initializing Orion-SoC USB Host Controller\n");
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(&pdev->dev,
"Found HC with no IRQ. Check %s setup!\n",
dev_name(&pdev->dev));
err = -ENODEV;
goto err;
}
/*
* Right now device-tree probed devices don't get dma_mask
* set. Since shared usb code relies on it, set it here for
* now. Once we have dma capability bindings this can go away.
*/
err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (err)
goto err;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs)) {
err = PTR_ERR(regs);
goto err;
}
hcd = usb_create_hcd(&ehci_orion_hc_driver,
&pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
err = -ENOMEM;
goto err;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = regs;
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs + 0x100;
hcd->has_tt = 1;
priv = hcd_to_orion_priv(hcd);
/*
* Not all platforms can gate the clock, so it is not an error if
* the clock does not exists.
*/
priv->clk = devm_clk_get(&pdev->dev, NULL);
if (!IS_ERR(priv->clk))
clk_prepare_enable(priv->clk);
priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
if (IS_ERR(priv->phy)) {
err = PTR_ERR(priv->phy);
if (err != -ENOSYS)
goto err_phy_get;
} else {
err = phy_init(priv->phy);
if (err)
goto err_phy_init;
err = phy_power_on(priv->phy);
if (err)
goto err_phy_power_on;
}
/*
* (Re-)program MBUS remapping windows if we are asked to.
*/
dram = mv_mbus_dram_info();
if (dram)
ehci_orion_conf_mbus_windows(hcd, dram);
/*
* setup Orion USB controller.
*/
if (pdev->dev.of_node)
phy_version = EHCI_PHY_NA;
else
phy_version = pd->phy_version;
switch (phy_version) {
case EHCI_PHY_NA: /* dont change USB phy settings */
break;
case EHCI_PHY_ORION:
orion_usb_phy_v1_setup(hcd);
break;
case EHCI_PHY_DD:
case EHCI_PHY_KW:
default:
dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
}
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
goto err_add_hcd;
device_wakeup_enable(hcd->self.controller);
return 0;
err_add_hcd:
if (!IS_ERR(priv->phy))
phy_power_off(priv->phy);
err_phy_power_on:
if (!IS_ERR(priv->phy))
phy_exit(priv->phy);
err_phy_init:
err_phy_get:
if (!IS_ERR(priv->clk))
clk_disable_unprepare(priv->clk);
usb_put_hcd(hcd);
err:
dev_err(&pdev->dev, "init %s fail, %d\n",
dev_name(&pdev->dev), err);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
tzachi perelstein | tzachi perelstein | 226 | 39.03% | 1 | 4.76% |
gregory clement | gregory clement | 166 | 28.67% | 2 | 9.52% |
andrew lunn | andrew lunn | 35 | 6.04% | 2 | 9.52% |
ronen shitrit | ronen shitrit | 28 | 4.84% | 1 | 4.76% |
jingoo han | jingoo han | 21 | 3.63% | 3 | 14.29% |
lennert buytenhek | lennert buytenhek | 21 | 3.63% | 1 | 4.76% |
simon baatz | simon baatz | 13 | 2.25% | 1 | 4.76% |
kay sievers | kay sievers | 12 | 2.07% | 1 | 4.76% |
russell king | russell king | 11 | 1.90% | 2 | 9.52% |
varka bhadram | varka bhadram | 11 | 1.90% | 1 | 4.76% |
peter chen | peter chen | 9 | 1.55% | 1 | 4.76% |
jonas gorski | jonas gorski | 7 | 1.21% | 1 | 4.76% |
stephen warren | stephen warren | 7 | 1.21% | 1 | 4.76% |
thomas petazzoni | thomas petazzoni | 6 | 1.04% | 1 | 4.76% |
h hartley sweeten | h hartley sweeten | 4 | 0.69% | 1 | 4.76% |
alan stern | alan stern | 2 | 0.35% | 1 | 4.76% |
| Total | 579 | 100.00% | 21 | 100.00% |
static int ehci_orion_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
usb_remove_hcd(hcd);
if (!IS_ERR(priv->phy)) {
phy_power_off(priv->phy);
phy_exit(priv->phy);
}
if (!IS_ERR(priv->clk))
clk_disable_unprepare(priv->clk);
usb_put_hcd(hcd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gregory clement | gregory clement | 41 | 47.13% | 2 | 50.00% |
tzachi perelstein | tzachi perelstein | 31 | 35.63% | 1 | 25.00% |
andrew lunn | andrew lunn | 15 | 17.24% | 1 | 25.00% |
| Total | 87 | 100.00% | 4 | 100.00% |
static const struct of_device_id ehci_orion_dt_ids[] = {
{ .compatible = "marvell,orion-ehci", },
{},
};
MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
static struct platform_driver ehci_orion_driver = {
.probe = ehci_orion_drv_probe,
.remove = ehci_orion_drv_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "orion-ehci",
.of_match_table = ehci_orion_dt_ids,
},
};
static int __init ehci_orion_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info("%s: " DRIVER_DESC "\n", hcd_name);
ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
return platform_driver_register(&ehci_orion_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
manjunath goudar | manjunath goudar | 41 | 95.35% | 1 | 50.00% |
gregory clement | gregory clement | 2 | 4.65% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
module_init(ehci_orion_init);
static void __exit ehci_orion_cleanup(void)
{
platform_driver_unregister(&ehci_orion_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
manjunath goudar | manjunath goudar | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_exit(ehci_orion_cleanup);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_ALIAS("platform:orion-ehci");
MODULE_AUTHOR("Tzachi Perelstein");
MODULE_LICENSE("GPL v2");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
tzachi perelstein | tzachi perelstein | 539 | 39.96% | 1 | 3.85% |
gregory clement | gregory clement | 252 | 18.68% | 2 | 7.69% |
lennert buytenhek | lennert buytenhek | 174 | 12.90% | 1 | 3.85% |
manjunath goudar | manjunath goudar | 119 | 8.82% | 1 | 3.85% |
andrew lunn | andrew lunn | 97 | 7.19% | 3 | 11.54% |
thomas petazzoni | thomas petazzoni | 38 | 2.82% | 2 | 7.69% |
ronen shitrit | ronen shitrit | 30 | 2.22% | 1 | 3.85% |
jingoo han | jingoo han | 21 | 1.56% | 3 | 11.54% |
simon baatz | simon baatz | 13 | 0.96% | 1 | 3.85% |
kay sievers | kay sievers | 12 | 0.89% | 1 | 3.85% |
russell king | russell king | 11 | 0.82% | 2 | 7.69% |
varka bhadram | varka bhadram | 11 | 0.82% | 1 | 3.85% |
peter chen | peter chen | 9 | 0.67% | 1 | 3.85% |
stephen warren | stephen warren | 7 | 0.52% | 1 | 3.85% |
jonas gorski | jonas gorski | 7 | 0.52% | 1 | 3.85% |
h hartley sweeten | h hartley sweeten | 4 | 0.30% | 1 | 3.85% |
alan stern | alan stern | 2 | 0.15% | 1 | 3.85% |
marcin wojtas | marcin wojtas | 2 | 0.15% | 1 | 3.85% |
arnd bergmann | arnd bergmann | 1 | 0.07% | 1 | 3.85% |
greg kroah-hartman | greg kroah-hartman | | 0.00% | 0 | 0.00% |
| Total | 1349 | 100.00% | 26 | 100.00% |
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