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-rw-r--r--target/linux/bcm53xx/patches-4.3/191-usb-xhci-add-Broadcom-specific-fake-doorbell.patch135
1 files changed, 0 insertions, 135 deletions
diff --git a/target/linux/bcm53xx/patches-4.3/191-usb-xhci-add-Broadcom-specific-fake-doorbell.patch b/target/linux/bcm53xx/patches-4.3/191-usb-xhci-add-Broadcom-specific-fake-doorbell.patch
deleted file mode 100644
index a0cc267422..0000000000
--- a/target/linux/bcm53xx/patches-4.3/191-usb-xhci-add-Broadcom-specific-fake-doorbell.patch
+++ /dev/null
@@ -1,135 +0,0 @@
-From dd0e5f9a6a4aed849bdb80641c2a2350476cede7 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 v3 2/6] usb: 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.
-This quirk is also added to the platform data so we can activate it
-when we register our platform driver.
-
-Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
-Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- drivers/usb/host/xhci-plat.c | 3 +++
- drivers/usb/host/xhci.c | 57 +++++++++++++++++++++++++++++++++++++---
- drivers/usb/host/xhci.h | 1 +
- include/linux/usb/xhci_pdriver.h | 1 +
- 4 files changed, 59 insertions(+), 3 deletions(-)
-
---- a/drivers/usb/host/xhci-plat.c
-+++ b/drivers/usb/host/xhci-plat.c
-@@ -51,6 +51,9 @@ static void xhci_plat_quirks(struct devi
- if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
- (pdata && pdata->usb3_lpm_capable))
- xhci->quirks |= XHCI_LPM_SUPPORT;
-+
-+ if (pdata && pdata->usb3_fake_doorbell)
-+ xhci->quirks |= XHCI_FAKE_DOORBELL;
- }
-
- /* called during probe() after chip reset completes */
---- a/drivers/usb/host/xhci.c
-+++ b/drivers/usb/host/xhci.c
-@@ -121,6 +121,39 @@ int xhci_halt(struct xhci_hcd *xhci)
- return ret;
- }
-
-+static int xhci_fake_doorbell(struct xhci_hcd *xhci, int slot_id)
-+{
-+ u32 temp;
-+
-+ /* alloc a virt device for slot */
-+ if (!xhci_alloc_virt_device(xhci, slot_id, NULL, GFP_NOIO)) {
-+ xhci_warn(xhci, "Could not allocate xHCI USB device data structures\n");
-+ return -ENOMEM;
-+ }
-+
-+ /* ring fake doorbell for slot_id ep 0 */
-+ xhci_ring_ep_doorbell(xhci, slot_id, 0, 0);
-+ usleep_range(1000, 1500);
-+
-+ /* read the status register to check if HSE is set or not? */
-+ temp = readl(&xhci->op_regs->status);
-+
-+ /* clear HSE if set */
-+ if (temp & STS_FATAL) {
-+ xhci_dbg(xhci, "HSE problem detected, status: 0x%x\n", temp);
-+ temp &= ~(0x1fff);
-+ temp |= STS_FATAL;
-+ writel(temp, &xhci->op_regs->status);
-+ usleep_range(1000, 1500);
-+ readl(&xhci->op_regs->status);
-+ }
-+
-+ /* Free virt device */
-+ xhci_free_virt_device(xhci, slot_id);
-+
-+ return 0;
-+}
-+
- /*
- * Set the run bit and wait for the host to be running.
- */
-@@ -567,10 +600,25 @@ int xhci_init(struct usb_hcd *hcd)
-
- static int xhci_run_finished(struct xhci_hcd *xhci)
- {
-- if (xhci_start(xhci)) {
-- xhci_halt(xhci);
-- return -ENODEV;
-+ int err;
-+
-+ err = xhci_start(xhci);
-+ if (err) {
-+ err = -ENODEV;
-+ goto out_err;
-+ }
-+ if (xhci->quirks & XHCI_FAKE_DOORBELL) {
-+ err = xhci_fake_doorbell(xhci, 1);
-+ if (err)
-+ goto out_err;
-+
-+ err = xhci_start(xhci);
-+ if (err) {
-+ err = -ENODEV;
-+ goto out_err;
-+ }
- }
-+
- xhci->shared_hcd->state = HC_STATE_RUNNING;
- xhci->cmd_ring_state = CMD_RING_STATE_RUNNING;
-
-@@ -580,6 +628,9 @@ static int xhci_run_finished(struct xhci
- xhci_dbg_trace(xhci, trace_xhci_dbg_init,
- "Finished xhci_run for USB3 roothub");
- return 0;
-+out_err:
-+ xhci_halt(xhci);
-+ return err;
- }
-
- /*
---- a/drivers/usb/host/xhci.h
-+++ b/drivers/usb/host/xhci.h
-@@ -1575,6 +1575,7 @@ struct xhci_hcd {
- /* For controllers with a broken beyond repair streams implementation */
- #define XHCI_BROKEN_STREAMS (1 << 19)
- #define XHCI_PME_STUCK_QUIRK (1 << 20)
-+#define XHCI_FAKE_DOORBELL (1 << 21)
- unsigned int num_active_eps;
- unsigned int limit_active_eps;
- /* There are two roothubs to keep track of bus suspend info for */
---- a/include/linux/usb/xhci_pdriver.h
-+++ b/include/linux/usb/xhci_pdriver.h
-@@ -22,6 +22,7 @@
- */
- struct usb_xhci_pdata {
- unsigned usb3_lpm_capable:1;
-+ unsigned usb3_fake_doorbell:1;
- };
-
- #endif /* __USB_CORE_XHCI_PDRIVER_H */