openwrtv4/target/linux/generic/pending-3.18/102-ehci_hcd_ignore_oc.patch
John Crispin 74d00a8c38 kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

Signed-off-by: John Crispin <john@phrozen.org>
2017-08-05 08:46:36 +02:00

82 lines
2.9 KiB
Diff

From 1e311820ec3055e3f08e687de6564692a7cec675 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <florian@openwrt.org>
Date: Mon, 28 Jan 2013 20:06:29 +0100
Subject: [PATCH 11/12] USB: EHCI: add ignore_oc flag to disable overcurrent
checking
This patch adds an ignore_oc flag which can be set by EHCI controller
not supporting or wanting to disable overcurrent checking. The EHCI
platform data in include/linux/usb/ehci_pdriver.h is also augmented to
take advantage of this new flag.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
drivers/usb/host/ehci-hcd.c | 2 +-
drivers/usb/host/ehci-hub.c | 4 ++--
drivers/usb/host/ehci-platform.c | 1 +
drivers/usb/host/ehci.h | 1 +
include/linux/usb/ehci_pdriver.h | 1 +
5 files changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -633,7 +633,7 @@ static int ehci_run (struct usb_hcd *hcd
"USB %x.%x started, EHCI %x.%02x%s\n",
((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f),
temp >> 8, temp & 0xff,
- ignore_oc ? ", overcurrent ignored" : "");
+ (ignore_oc || ehci->ignore_oc) ? ", overcurrent ignored" : "");
ehci_writel(ehci, INTR_MASK,
&ehci->regs->intr_enable); /* Turn On Interrupts */
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -635,7 +635,7 @@ ehci_hub_status_data (struct usb_hcd *hc
* always set, seem to clear PORT_OCC and PORT_CSC when writing to
* PORT_POWER; that's surprising, but maybe within-spec.
*/
- if (!ignore_oc)
+ if (!ignore_oc && !ehci->ignore_oc)
mask = PORT_CSC | PORT_PEC | PORT_OCC;
else
mask = PORT_CSC | PORT_PEC;
@@ -995,7 +995,7 @@ int ehci_hub_control(
if (temp & PORT_PEC)
status |= USB_PORT_STAT_C_ENABLE << 16;
- if ((temp & PORT_OCC) && !ignore_oc){
+ if ((temp & PORT_OCC) && (!ignore_oc && !ehci->ignore_oc)){
status |= USB_PORT_STAT_C_OVERCURRENT << 16;
/*
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -226,6 +226,8 @@ static int ehci_platform_probe(struct pl
ehci->big_endian_desc = 1;
if (pdata->big_endian_mmio)
ehci->big_endian_mmio = 1;
+ if (pdata->ignore_oc)
+ ehci->ignore_oc = 1;
#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
if (ehci->big_endian_mmio) {
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -226,6 +226,7 @@ struct ehci_hcd { /* one per controlle
unsigned frame_index_bug:1; /* MosChip (AKA NetMos) */
unsigned need_oc_pp_cycle:1; /* MPC834X port power */
unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
+ unsigned ignore_oc:1;
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)
--- a/include/linux/usb/ehci_pdriver.h
+++ b/include/linux/usb/ehci_pdriver.h
@@ -45,6 +45,7 @@ struct usb_ehci_pdata {
unsigned big_endian_desc:1;
unsigned big_endian_mmio:1;
unsigned no_io_watchdog:1;
+ unsigned ignore_oc:1;
/* Turn on all power and clocks */
int (*power_on)(struct platform_device *pdev);