linux-kernel - [PATCH 0/2] fsl_lpuart: Add IDLE interrupt support for rx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230710013857.7396-1-sherry.sun@nxp.com>
Date:   Mon, 10 Jul 2023 09:38:55 +0800
From:   Sherry Sun <sherry.sun@....com>
To:     gregkh@...uxfoundation.org, jirislaby@...nel.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-imx@....com
Subject: [PATCH 0/2] fsl_lpuart: Add IDLE interrupt support for rx_dma on imx7ulp/imx8ulp/imx8qxp

Now in the lpuart driver, we use receive dma timer to simulate the hardware EOP
event, but the timer latency is big which cause the Bluetooth Firmware download
timeout on Android platform(it has a limited FW download time window).

So here we use IDLE interrupt support for receive dma on
imx7ulp/imx8ulp/imx8qxp platforms to replace the receive dma timer, which can
reduce the BT FW download time obviously and the performance close to hardware
EOP.

Patch#1 move the lpuart32_int() below lpuart_copy_rx_to_tty() to avoid the
function declaration in Patch#2.

Sherry Sun (2):
  tty: serial: fsl_lpuart: move the lpuart32_int() below
  tty: serial: fsl_lpuart: add IDLE interrupt support for rx_dma on
    imx7ulp/imx8ulp/imx8qxp

 drivers/tty/serial/fsl_lpuart.c | 83 ++++++++++++++++++++++++---------
 1 file changed, 61 insertions(+), 22 deletions(-)

-- 
2.17.1