From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: [PATCH AUTOSEL 4.19 12/21] usb: xhci-mtk: support quirk to disable usb2 lpm
Date: Sun, 2 May 2021 10:05:08 -0400 [thread overview]
Message-ID: <20210502140517.2719912-12-sashal@kernel.org> (raw)
In-Reply-To: <20210502140517.2719912-1-sashal@kernel.org>
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
[ Upstream commit bee1f89aad2a51cd3339571bc8eadbb0dc88a683 ]
The xHCI driver support usb2 HW LPM by default, here add support
XHCI_HW_LPM_DISABLE quirk, then we can disable usb2 lpm when
need it.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1617181553-3503-4-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/host/xhci-mtk.c | 3 +++
drivers/usb/host/xhci-mtk.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 09d5a789fcd5..f4b2e766f195 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -395,6 +395,8 @@ static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci)
xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
if (mtk->lpm_support)
xhci->quirks |= XHCI_LPM_SUPPORT;
+ if (mtk->u2_lpm_disable)
+ xhci->quirks |= XHCI_HW_LPM_DISABLE;
/*
* MTK xHCI 0.96: PSA is 1 by default even if doesn't support stream,
@@ -467,6 +469,7 @@ static int xhci_mtk_probe(struct platform_device *pdev)
return ret;
mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable");
+ mtk->u2_lpm_disable = of_property_read_bool(node, "usb2-lpm-disable");
/* optional property, ignore the error if it does not exist */
of_property_read_u32(node, "mediatek,u3p-dis-msk",
&mtk->u3p_dis_msk);
diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h
index cc59d80b663b..1601ca9a388e 100644
--- a/drivers/usb/host/xhci-mtk.h
+++ b/drivers/usb/host/xhci-mtk.h
@@ -123,6 +123,7 @@ struct xhci_hcd_mtk {
struct phy **phys;
int num_phys;
bool lpm_support;
+ bool u2_lpm_disable;
/* usb remote wakeup */
bool uwk_en;
struct regmap *uwk;
--
2.30.2
next prev parent reply other threads:[~2021-05-02 14:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210502140517.2719912-1-sashal@kernel.org>
2021-05-02 14:04 ` [PATCH AUTOSEL 4.19 03/21] usb: gadget: uvc: add bInterval checking for HS mode Sasha Levin
2021-05-02 14:05 ` [PATCH AUTOSEL 4.19 05/21] usb: gadget: f_uac1: validate input parameters Sasha Levin
2021-05-02 14:05 ` [PATCH AUTOSEL 4.19 06/21] usb: dwc3: gadget: Ignore EP queue requests during bus reset Sasha Levin
2021-05-10 12:03 ` Pavel Machek
2021-05-02 14:05 ` [PATCH AUTOSEL 4.19 07/21] usb: xhci: Fix port minor revision Sasha Levin
2021-05-02 14:05 ` Sasha Levin [this message]
2021-05-02 14:05 ` [PATCH AUTOSEL 4.19 13/21] xhci: check control context is valid before dereferencing it Sasha Levin
2021-05-02 14:05 ` [PATCH AUTOSEL 4.19 14/21] xhci: fix potential array out of bounds with several interrupters Sasha Levin
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