From: Daehwan Jung <dh10.jung@samsung.com>
To: Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org (open list:USB XHCI DRIVER),
linux-kernel@vger.kernel.org (open list),
Howard Yen <howardyen@google.com>,
Jack Pham <jackp@codeaurora.org>, Puma Hsu <pumahsu@google.com>,
"J . Avila" <elavila@google.com>,
Daehwan Jung <dh10.jung@samsung.com>,
sc.suh@samsung.com
Subject: [PATCH v3 0/4] support USB offload feature
Date: Mon, 21 Mar 2022 17:59:50 +0900 [thread overview]
Message-ID: <1647853194-62147-1-git-send-email-dh10.jung@samsung.com> (raw)
In-Reply-To: CGME20220321090202epcas2p1bfa78db059c1f6f6acbbb015e4bf991c@epcas2p1.samsung.com
This patchset is for USB offload feature, which makes Co-processor to use
some memories of xhci. Especially it's useful for USB Audio scenario.
Audio stream would get shortcut because Co-processor directly write/read
data in xhci memories. It could get speed-up using faster memory like SRAM.
That's why this gives vendors flexibilty of memory management.
Several pathches have been merged in AOSP kernel(android12-5.10) and I put
together and split into 3 patches. Plus let me add user(xhci-exynos)
module to see how user could use it.
To sum up, it's for providing xhci memories to Co-Processor.
It would cover DCBAA, Device Context, Transfer Ring, Event Ring, ERST.
It needs xhci hooks and to export some xhci symbols.
Changes in v2 :
- Fix commit message by adding Signed-off-by in each patch.
- Fix conflict on latest.
Changes in v3 :
- Remove export symbols and xhci hooks which xhci-exynos don't need.
- Modify commit message to clarify why it needs to export symbols.
- Check compiling of xhci-exynos.
Daehwan Jung (4):
usb: host: export symbols for xhci hooks usage
usb: host: add xhci hooks for USB offload
usb: host: add some to xhci overrides for USB offload
usb: host: add xhci-exynos driver
drivers/usb/host/Kconfig | 9 +
drivers/usb/host/Makefile | 1 +
drivers/usb/host/xhci-exynos.c | 982 +++++++++++++++++++++++++++++++++
drivers/usb/host/xhci-exynos.h | 63 +++
drivers/usb/host/xhci-hub.c | 7 +
drivers/usb/host/xhci-mem.c | 150 ++++-
drivers/usb/host/xhci-plat.c | 43 +-
drivers/usb/host/xhci-plat.h | 7 +
drivers/usb/host/xhci-ring.c | 1 +
drivers/usb/host/xhci.c | 90 ++-
drivers/usb/host/xhci.h | 50 ++
11 files changed, 1379 insertions(+), 24 deletions(-)
create mode 100644 drivers/usb/host/xhci-exynos.c
create mode 100644 drivers/usb/host/xhci-exynos.h
--
2.31.1
next parent reply other threads:[~2022-03-21 9:02 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20220321090202epcas2p1bfa78db059c1f6f6acbbb015e4bf991c@epcas2p1.samsung.com>
2022-03-21 8:59 ` Daehwan Jung [this message]
[not found] ` <CGME20220321090204epcas2p31e39a4b8b6fc803ceecac5d19e6e39e9@epcas2p3.samsung.com>
2022-03-21 8:59 ` [PATCH v3 1/4] usb: host: export symbols for xhci hooks usage Daehwan Jung
2022-03-21 15:35 ` kernel test robot
2022-03-22 17:12 ` Krzysztof Kozlowski
2022-03-23 1:22 ` Jung Daehwan
[not found] ` <CGME20220321090204epcas2p3b2be5c6b131240e408d12d40c517395c@epcas2p3.samsung.com>
2022-03-21 8:59 ` [PATCH v3 2/4] usb: host: add xhci hooks for USB offload Daehwan Jung
2022-03-21 17:00 ` Mathias Nyman
2022-03-22 2:14 ` Jung Daehwan
[not found] ` <CGME20220321090205epcas2p4f3698a0aa49d251c0a8f008e85d968ba@epcas2p4.samsung.com>
2022-03-21 8:59 ` [PATCH v3 3/4] usb: host: add some to xhci overrides " Daehwan Jung
[not found] ` <CGME20220321090205epcas2p15ac16f281554b663062e0e31666defab@epcas2p1.samsung.com>
2022-03-21 8:59 ` [PATCH v3 4/4] usb: host: add xhci-exynos driver Daehwan Jung
2022-03-21 15:45 ` Bjørn Mork
2022-03-22 2:30 ` Jung Daehwan
2022-03-21 16:26 ` kernel test robot
2022-03-21 16:37 ` kernel test robot
2022-03-22 17:10 ` Krzysztof Kozlowski
2022-03-23 2:34 ` Jung Daehwan
2022-03-23 8:26 ` Krzysztof Kozlowski
2022-03-29 2:35 ` Jung Daehwan
2022-03-22 17:16 ` Krzysztof Kozlowski
2022-03-23 5:17 ` Jung Daehwan
2022-03-23 8:34 ` Krzysztof Kozlowski
2022-03-21 9:14 ` [PATCH v3 0/4] support USB offload feature Greg Kroah-Hartman
2022-03-21 9:24 ` Jung Daehwan
2022-03-21 9:32 ` Greg Kroah-Hartman
2022-03-21 10:06 ` Jung Daehwan
2022-03-21 10:16 ` Greg Kroah-Hartman
2022-03-22 2:17 ` Jung Daehwan
2022-03-22 17:05 ` Krzysztof Kozlowski
2022-03-23 1:31 ` Jung Daehwan
2022-03-23 8:25 ` Krzysztof Kozlowski
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