From: Rafał Miłecki <zaj...@gmail.com>
Signed-off-by: Rafał Miłecki <zaj...@gmail.com>
Signed-off-by: Hauke Mehrtens <ha...@hauke-m.de>
---
drivers/usb/host/bcma-hcd.c | 225 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 225 insertions(+)
diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index 0b4d0e8..32815e6 100644
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -28,6 +28,7 @@
#include <linux/of_gpio.h>
#include <linux/usb/ehci_pdriver.h>
#include <linux/usb/ohci_pdriver.h>
+#include <linux/usb/xhci_pdriver.h>
MODULE_AUTHOR("Hauke Mehrtens");
MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
@@ -37,6 +38,7 @@ struct bcma_hcd_device {
struct bcma_device *core;
struct platform_device *ehci_dev;
struct platform_device *ohci_dev;
+ struct platform_device *xhci_dev;
};
/* Wait for bitmask in a register to get set or cleared.
@@ -250,6 +252,10 @@ static const struct usb_ehci_pdata ehci_pdata = {
static const struct usb_ohci_pdata ohci_pdata = {
};
+static const struct usb_xhci_pdata xhci_pdata = {
+ .usb3_fake_doorbell = 1
+};
+
static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev,
const char *name, u32 addr,
const void *data,
@@ -343,6 +349,216 @@ err_unregister_ohci_dev:
return err;
}
+static bool bcma_wait_reg(struct bcma_bus *bus, void __iomem *addr, u32 mask,
+ u32 value, int timeout)
+{
+ unsigned long deadline = jiffies + timeout;
+ u32 val;
+
+ do {
+ val = readl(addr);
+ if ((val & mask) == value)
+ return true;
+ cpu_relax();
+ udelay(10);
+ } while (!time_after_eq(jiffies, deadline));
+
+ pr_err("Timeout waiting for register %p\n", addr);
+
+ return false;
+}
+
+static void bcma_hcd_usb30_phy_init(struct bcma_hcd_device *bcma_hcd)
+{
+ struct bcma_device *core = bcma_hcd->core;
+ struct bcma_bus *bus = core->bus;
+ struct bcma_chipinfo *chipinfo = &bus->chipinfo;
+ struct bcma_drv_cc_b *ccb = &bus->drv_cc_b;
+ struct bcma_device *arm_core;
+ void __iomem *dmu = NULL;
+ u32 cru_straps_ctrl;
+
+ if (chipinfo->id != BCMA_CHIP_ID_BCM4707 &&
+ chipinfo->id != BCMA_CHIP_ID_BCM53018)
+ return;
+
+ arm_core = bcma_find_core(bus, BCMA_CORE_ARMCA9);
+ if (!arm_core)
+ return;
+
+ dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000);
+ if (!dmu)
+ goto out;
+
+ /* Check strapping of PCIE/USB3 SEL */
+ cru_straps_ctrl = ioread32(dmu + 0x2a0);
+ if ((cru_straps_ctrl & 0x10) == 0)
+ goto out;
+
+ /* Perform USB3 system soft reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
+
+ /* Enable MDIO. Setting MDCDIV as 26 */
+ iowrite32(0x0000009a, ccb->mii + 0x000);
+ udelay(2);
+
+ switch (chipinfo->id) {
+ case BCMA_CHIP_ID_BCM4707:
+ if (chipinfo->rev == 4) {
+ /* For NS-B0, USB3 PLL Block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x587e8000, ccb->mii + 0x004);
+
+ /* Clear ana_pllSeqStart */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x58061000, ccb->mii + 0x004);
+
+ /* CMOS Divider ratio to 25 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x582a6400, ccb->mii + 0x004);
+
+ /* Asserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x582ec000, ccb->mii + 0x004);
+
+ /* Deaaserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x582e8000, ccb->mii + 0x004);
+
+ /* Deasserting USB3 system reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, 0);
+
+ /* Set ana_pllSeqStart */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x58069000, ccb->mii + 0x004);
+
+ /* RXPMD block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x587e8020, ccb->mii + 0x004);
+
+ /* CDR int loop locking BW to 1 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x58120049, ccb->mii + 0x004);
+
+ /* CDR int loop acquisition BW to 1 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x580e0049, ccb->mii + 0x004);
+
+ /* CDR prop loop BW to 1 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x580a005c, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ } else {
+ /* PLL30 block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x587e8000, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x582a6400, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x587e80e0, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x580a009c, ccb->mii + 0x004);
+
+ /* Enable SSC */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x587e8040, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x580a21d3, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+ iowrite32(0x58061003, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000,
1000);
+
+ /* Deasserting USB3 system reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, 0);
+ }
+ break;
+ case BCMA_CHIP_ID_BCM53018:
+ /* USB3 PLL Block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8000, ccb->mii + 0x004);
+
+ /* Assert Ana_Pllseq start */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58061000, ccb->mii + 0x004);
+
+ /* Assert CML Divider ratio to 26 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582a6400, ccb->mii + 0x004);
+
+ /* Asserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582ec000, ccb->mii + 0x004);
+
+ /* Deaaserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582e8000, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+ /* Deasserting USB3 system reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, 0);
+
+ /* PLL frequency monitor enable */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58069000, ccb->mii + 0x004);
+
+ /* PIPE Block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8060, ccb->mii + 0x004);
+
+ /* CMPMAX & CMPMINTH setting */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580af30d, ccb->mii + 0x004);
+
+ /* DEGLITCH MIN & MAX setting */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580e6302, ccb->mii + 0x004);
+
+ /* TXPMD block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8040, ccb->mii + 0x004);
+
+ /* Enabling SSC */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58061003, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+ break;
+ }
+out:
+ if (dmu)
+ iounmap(dmu);
+}
+
+static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)
+{
+ struct bcma_device *core = bcma_hcd->core;
+
+ bcma_core_enable(core, 0);
+
+ bcma_hcd_usb30_phy_init(bcma_hcd);
+
+ bcma_hcd->xhci_dev = bcma_hcd_create_pdev(core, "xhci-hcd", core->addr,
+ &xhci_pdata,
+ sizeof(xhci_pdata));
+ if (IS_ERR(bcma_hcd->ohci_dev))
+ return PTR_ERR(bcma_hcd->ohci_dev);
+
+ return 0;
+}
+
static int bcma_hcd_probe(struct bcma_device *dev)
{
int err;
@@ -365,6 +581,11 @@ static int bcma_hcd_probe(struct bcma_device *dev)
if (err)
return err;
break;
+ case BCMA_CORE_NS_USB30:
+ err = bcma_hcd_usb30_init(usb_dev);
+ if (err)
+ return err;
+ break;
default:
return -ENODEV;
}
@@ -378,11 +599,14 @@ static void bcma_hcd_remove(struct bcma_device *dev)
struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);
struct platform_device *ohci_dev = usb_dev->ohci_dev;
struct platform_device *ehci_dev = usb_dev->ehci_dev;
+ struct platform_device *xhci_dev = usb_dev->xhci_dev;
if (ohci_dev)
platform_device_unregister(ohci_dev);
if (ehci_dev)
platform_device_unregister(ehci_dev);
+ if (xhci_dev)
+ platform_device_unregister(xhci_dev);
bcma_core_disable(dev, 0);
}
@@ -419,6 +643,7 @@ static int bcma_hcd_resume(struct bcma_device *dev)
static const struct bcma_device_id bcma_hcd_table[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV,
BCMA_ANY_CLASS),
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV,
BCMA_ANY_CLASS),
+ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV,
BCMA_ANY_CLASS),
{},
};
MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);
--
2.1.4
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