mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 22:23:27 +00:00
68d9cb8214
Run tested: ath79, ipq40xx Build tested: ath79, ipq40xx Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
67 lines
2.1 KiB
Diff
67 lines
2.1 KiB
Diff
From 6ac09efa8f0e189ffe7dd7b0889289de56ee44cc Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jogo@openwrt.org>
|
|
Date: Sun, 19 Jan 2014 12:18:03 +0100
|
|
Subject: [PATCH] USB: EHCI: allow limiting ports for ehci-platform
|
|
|
|
In the same way as the ohci platform driver allows limiting ports,
|
|
enable the same for ehci. This prevents a mismatch in the available
|
|
ports between ehci/ohci on USB 2.0 controllers.
|
|
|
|
This is needed if the USB host controller always reports the maximum
|
|
number of ports regardless of the number of available ports (because
|
|
one might be set to be usb device).
|
|
|
|
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
|
|
---
|
|
drivers/usb/host/ehci-hcd.c | 4 ++++
|
|
drivers/usb/host/ehci-platform.c | 2 ++
|
|
drivers/usb/host/ehci.h | 1 +
|
|
include/linux/usb/ehci_pdriver.h | 1 +
|
|
4 files changed, 8 insertions(+)
|
|
|
|
--- a/drivers/usb/host/ehci-hcd.c
|
|
+++ b/drivers/usb/host/ehci-hcd.c
|
|
@@ -665,6 +665,10 @@ int ehci_setup(struct usb_hcd *hcd)
|
|
|
|
/* cache this readonly data; minimize chip reads */
|
|
ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
|
|
+ if (ehci->num_ports) {
|
|
+ ehci->hcs_params &= ~0xf; /* bits 3:0, ports on HC */
|
|
+ ehci->hcs_params |= ehci->num_ports;
|
|
+ }
|
|
|
|
ehci->sbrn = HCD_USB2;
|
|
|
|
--- a/drivers/usb/host/ehci-platform.c
|
|
+++ b/drivers/usb/host/ehci-platform.c
|
|
@@ -62,6 +62,9 @@ static int ehci_platform_reset(struct us
|
|
|
|
ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
|
|
|
|
+ if (pdata->num_ports && pdata->num_ports <= 15)
|
|
+ ehci->num_ports = pdata->num_ports;
|
|
+
|
|
if (pdata->pre_setup) {
|
|
retval = pdata->pre_setup(hcd);
|
|
if (retval < 0)
|
|
--- a/drivers/usb/host/ehci.h
|
|
+++ b/drivers/usb/host/ehci.h
|
|
@@ -203,6 +203,7 @@ struct ehci_hcd { /* one per controlle
|
|
u32 command;
|
|
|
|
/* SILICON QUIRKS */
|
|
+ unsigned int num_ports;
|
|
unsigned no_selective_suspend:1;
|
|
unsigned has_fsl_port_bug:1; /* FreeScale */
|
|
unsigned has_fsl_hs_errata:1; /* Freescale HS quirk */
|
|
--- a/include/linux/usb/ehci_pdriver.h
|
|
+++ b/include/linux/usb/ehci_pdriver.h
|
|
@@ -43,6 +43,7 @@ struct usb_hcd;
|
|
*/
|
|
struct usb_ehci_pdata {
|
|
int caps_offset;
|
|
+ unsigned int num_ports;
|
|
unsigned has_tt:1;
|
|
unsigned has_synopsys_hc_bug:1;
|
|
unsigned big_endian_desc:1;
|