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93 lines
2.9 KiB
Diff
93 lines
2.9 KiB
Diff
From ca00adabb88dd1194891624836d7574aab2d7c05 Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Sun, 18 Jul 2010 21:25:03 +0200
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Subject: [PATCH 1/2] USB: Add USB 2.0 to ssb ohci driver
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This adds USB 2.0 support to ssb ohci driver.
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This patch was used in OpenWRT for a long time now.
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CC: Steve Brown <sbrown@cortland.com>
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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drivers/usb/host/ohci-ssb.c | 52 ++++++++++++++++++++++++++++++++++++++++--
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1 files changed, 49 insertions(+), 3 deletions(-)
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--- a/drivers/usb/host/ohci-ssb.c
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+++ b/drivers/usb/host/ohci-ssb.c
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@@ -93,8 +93,11 @@ static void ssb_ohci_detach(struct ssb_d
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{
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struct usb_hcd *hcd = ssb_get_drvdata(dev);
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+ if (hcd->driver->shutdown)
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+ hcd->driver->shutdown(hcd);
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usb_remove_hcd(hcd);
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iounmap(hcd->regs);
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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usb_put_hcd(hcd);
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ssb_device_disable(dev, 0);
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}
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@@ -106,10 +109,52 @@ static int ssb_ohci_attach(struct ssb_de
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int err = -ENOMEM;
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u32 tmp, flags = 0;
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- if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
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- flags |= SSB_OHCI_TMSLOW_HOSTMODE;
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+ if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
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+ dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
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+ return -EOPNOTSUPP;
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- ssb_device_enable(dev, flags);
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+ if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
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+ /* Put the device into host-mode. */
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+ flags |= SSB_OHCI_TMSLOW_HOSTMODE;
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+ ssb_device_enable(dev, flags);
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+ } else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
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+ /*
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+ * USB 2.0 special considerations:
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+ *
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+ * In addition to the standard SSB reset sequence, the Host
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+ * Control Register must be programmed to bring the USB core
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+ * and various phy components out of reset.
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+ */
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+ ssb_device_enable(dev, 0);
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+ ssb_write32(dev, 0x200, 0x7ff);
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+
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+ /* Change Flush control reg */
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+ tmp = ssb_read32(dev, 0x400);
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+ tmp &= ~8;
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+ ssb_write32(dev, 0x400, tmp);
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+ tmp = ssb_read32(dev, 0x400);
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+
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+ /* Change Shim control reg */
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+ tmp = ssb_read32(dev, 0x304);
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+ tmp &= ~0x100;
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+ ssb_write32(dev, 0x304, tmp);
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+ tmp = ssb_read32(dev, 0x304);
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+
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+ udelay(1);
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+
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+ /* Work around for 5354 failures */
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+ if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
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+ /* Change syn01 reg */
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+ tmp = 0x00fe00fe;
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+ ssb_write32(dev, 0x894, tmp);
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+
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+ /* Change syn03 reg */
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+ tmp = ssb_read32(dev, 0x89c);
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+ tmp |= 0x1;
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+ ssb_write32(dev, 0x89c, tmp);
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+ }
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+ } else
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+ ssb_device_enable(dev, 0);
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hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
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dev_name(dev->dev));
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@@ -200,6 +245,7 @@ static int ssb_ohci_resume(struct ssb_de
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static const struct ssb_device_id ssb_ohci_table[] = {
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SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
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SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
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+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
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SSB_DEVTABLE_END
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};
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MODULE_DEVICE_TABLE(ssb, ssb_ohci_table);
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