aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch')
-rw-r--r--target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch94
1 files changed, 0 insertions, 94 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch b/target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch
deleted file mode 100644
index d459520d3f..0000000000
--- a/target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch
+++ /dev/null
@@ -1,94 +0,0 @@
-From 9cc14ca0aae53c16d10ffea49848ac61a5015562 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
-Date: Sun, 21 Jun 2015 11:10:49 +0200
-Subject: [PATCH] xhci: add Broadcom specific fake doorbell
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This fixes problem with controller seeing devices only in some small
-percentage of cold boots.
-
-Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
----
- drivers/usb/host/xhci.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 62 insertions(+)
-
---- a/drivers/usb/host/xhci.c
-+++ b/drivers/usb/host/xhci.c
-@@ -122,6 +122,64 @@ int xhci_halt(struct xhci_hcd *xhci)
- return ret;
- }
-
-+#ifdef CONFIG_ARCH_BCM_5301X
-+int xhci_fake_doorbell(struct xhci_hcd *xhci, int slot_id)
-+{
-+ unsigned int temp1, ret;
-+
-+ /* alloc a virt device for slot */
-+ if (!xhci_alloc_virt_device(xhci, slot_id, 0, GFP_NOIO)) {
-+ xhci_warn(xhci, "Could not allocate xHCI USB device data structures\n");
-+ return 1;
-+ }
-+
-+ /* ring fake doorbell for slot_id ep 0 */
-+ xhci_ring_ep_doorbell(xhci, slot_id, 0, 0);
-+ mdelay(1);
-+
-+ /* read the status register to check if HSE is set or not? */
-+ temp1 = readl(&xhci->op_regs->status);
-+ xhci_dbg(xhci, "op reg status = %x\n",temp1);
-+
-+ /* clear HSE if set */
-+ if(temp1 & STS_FATAL) {
-+ xhci_dbg(xhci, "HSE problem detected\n");
-+ temp1 &= ~(0x1fff);
-+ temp1 |= STS_FATAL;
-+ xhci_dbg(xhci, "temp1=%x\n",temp1);
-+ writel(temp1, &xhci->op_regs->status);
-+ mdelay(1);
-+ temp1 = readl(&xhci->op_regs->status);
-+ xhci_dbg(xhci, "After clear op reg status=%x\n", temp1);
-+ }
-+
-+ /* Free virt device */
-+ xhci_free_virt_device(xhci, slot_id);
-+
-+ /* Run the controller if needed */
-+ temp1 = readl(&xhci->op_regs->command);
-+ if (temp1 & CMD_RUN)
-+ return 0;
-+ temp1 |= (CMD_RUN);
-+
-+ writel(temp1, &xhci->op_regs->command);
-+ /*
-+ * Wait for the HCHalted Status bit to be 0 to indicate the host is running.
-+ */
-+ ret = xhci_handshake(xhci, &xhci->op_regs->status,
-+ STS_HALT, 0, XHCI_MAX_HALT_USEC);
-+
-+ if (ret == -ETIMEDOUT) {
-+ xhci_err(xhci, "Host took too long to start, "
-+ "waited %u microseconds.\n",
-+ XHCI_MAX_HALT_USEC);
-+ return 1;
-+ }
-+
-+ return 0;
-+}
-+#endif /* CONFIG_ARCH_BCM_5301X */
-+
- /*
- * Set the run bit and wait for the host to be running.
- */
-@@ -146,6 +204,10 @@ static int xhci_start(struct xhci_hcd *x
- xhci_err(xhci, "Host took too long to start, "
- "waited %u microseconds.\n",
- XHCI_MAX_HALT_USEC);
-+#ifdef CONFIG_ARCH_BCM_5301X
-+ xhci_fake_doorbell(xhci, 1);
-+#endif /* CONFIG_ARCH_BCM_5301X */
-+
- if (!ret)
- xhci->xhc_state &= ~XHCI_STATE_HALTED;
- return ret;