304 lines
6.7 KiB
C
304 lines
6.7 KiB
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 <plat/ehci-orion.h>
|
|
|
|
#define rdl(off) __raw_readl(hcd->regs + (off))
|
|
#define wrl(off, val) __raw_writel((val), hcd->regs + (off))
|
|
|
|
#define USB_CMD 0x140
|
|
#define USB_MODE 0x1a8
|
|
#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
|
|
|
|
/*
|
|
* Implement Orion USB controller specification guidelines
|
|
*/
|
|
static void orion_usb_setup(struct usb_hcd *hcd)
|
|
{
|
|
/*
|
|
* Clear interrupt cause and mask
|
|
*/
|
|
wrl(USB_CAUSE, 0);
|
|
wrl(USB_MASK, 0);
|
|
|
|
/*
|
|
* Reset controller
|
|
*/
|
|
wrl(USB_CMD, rdl(USB_CMD) | 0x2);
|
|
while (rdl(USB_CMD) & 0x2);
|
|
|
|
/*
|
|
* 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) & ~0x1);
|
|
wrl(USB_CMD, rdl(USB_CMD) | 0x2);
|
|
while (rdl(USB_CMD) & 0x2);
|
|
|
|
/*
|
|
* 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, 0x13);
|
|
}
|
|
|
|
static int ehci_orion_setup(struct usb_hcd *hcd)
|
|
{
|
|
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
int retval;
|
|
|
|
retval = ehci_halt(ehci);
|
|
if (retval)
|
|
return retval;
|
|
|
|
/*
|
|
* data structure init
|
|
*/
|
|
retval = ehci_init(hcd);
|
|
if (retval)
|
|
return retval;
|
|
|
|
hcd->has_tt = 1;
|
|
|
|
ehci_reset(ehci);
|
|
ehci_port_power(ehci, 0);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static const struct hc_driver ehci_orion_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "Marvell Orion EHCI",
|
|
.hcd_priv_size = sizeof(struct ehci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ehci_irq,
|
|
.flags = HCD_MEMORY | HCD_USB2,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.reset = ehci_orion_setup,
|
|
.start = ehci_run,
|
|
.stop = ehci_stop,
|
|
.shutdown = ehci_shutdown,
|
|
|
|
/*
|
|
* managing i/o requests and associated device resources
|
|
*/
|
|
.urb_enqueue = ehci_urb_enqueue,
|
|
.urb_dequeue = ehci_urb_dequeue,
|
|
.endpoint_disable = ehci_endpoint_disable,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ehci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.hub_status_data = ehci_hub_status_data,
|
|
.hub_control = ehci_hub_control,
|
|
.bus_suspend = ehci_bus_suspend,
|
|
.bus_resume = ehci_bus_resume,
|
|
.relinquish_port = ehci_relinquish_port,
|
|
.port_handed_over = ehci_port_handed_over,
|
|
};
|
|
|
|
static void __init
|
|
ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
|
|
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++) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
static int __init ehci_orion_drv_probe(struct platform_device *pdev)
|
|
{
|
|
struct orion_ehci_data *pd = pdev->dev.platform_data;
|
|
struct resource *res;
|
|
struct usb_hcd *hcd;
|
|
struct ehci_hcd *ehci;
|
|
void __iomem *regs;
|
|
int irq, err;
|
|
|
|
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 err1;
|
|
}
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res) {
|
|
dev_err(&pdev->dev,
|
|
"Found HC with no register addr. Check %s setup!\n",
|
|
dev_name(&pdev->dev));
|
|
err = -ENODEV;
|
|
goto err1;
|
|
}
|
|
|
|
if (!request_mem_region(res->start, res->end - res->start + 1,
|
|
ehci_orion_hc_driver.description)) {
|
|
dev_dbg(&pdev->dev, "controller already in use\n");
|
|
err = -EBUSY;
|
|
goto err1;
|
|
}
|
|
|
|
regs = ioremap(res->start, res->end - res->start + 1);
|
|
if (regs == NULL) {
|
|
dev_dbg(&pdev->dev, "error mapping memory\n");
|
|
err = -EFAULT;
|
|
goto err2;
|
|
}
|
|
|
|
hcd = usb_create_hcd(&ehci_orion_hc_driver,
|
|
&pdev->dev, dev_name(&pdev->dev));
|
|
if (!hcd) {
|
|
err = -ENOMEM;
|
|
goto err3;
|
|
}
|
|
|
|
hcd->rsrc_start = res->start;
|
|
hcd->rsrc_len = res->end - res->start + 1;
|
|
hcd->regs = regs;
|
|
|
|
ehci = hcd_to_ehci(hcd);
|
|
ehci->caps = hcd->regs + 0x100;
|
|
ehci->regs = hcd->regs + 0x100 +
|
|
HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
|
|
ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
|
|
hcd->has_tt = 1;
|
|
ehci->sbrn = 0x20;
|
|
|
|
/*
|
|
* (Re-)program MBUS remapping windows if we are asked to.
|
|
*/
|
|
if (pd != NULL && pd->dram != NULL)
|
|
ehci_orion_conf_mbus_windows(hcd, pd->dram);
|
|
|
|
/*
|
|
* setup Orion USB controller
|
|
*/
|
|
orion_usb_setup(hcd);
|
|
|
|
err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
|
|
if (err)
|
|
goto err4;
|
|
|
|
return 0;
|
|
|
|
err4:
|
|
usb_put_hcd(hcd);
|
|
err3:
|
|
iounmap(regs);
|
|
err2:
|
|
release_mem_region(res->start, res->end - res->start + 1);
|
|
err1:
|
|
dev_err(&pdev->dev, "init %s fail, %d\n",
|
|
dev_name(&pdev->dev), err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
usb_remove_hcd(hcd);
|
|
iounmap(hcd->regs);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
MODULE_ALIAS("platform:orion-ehci");
|
|
|
|
static struct platform_driver ehci_orion_driver = {
|
|
.probe = ehci_orion_drv_probe,
|
|
.remove = __exit_p(ehci_orion_drv_remove),
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
.driver.name = "orion-ehci",
|
|
};
|