From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: "Théo Lebrun" <theo.lebrun@bootlin.com>
Cc: Russell King <linux@armlinux.org.uk>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>,
Gregory CLEMENT <gregory.clement@bootlin.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>,
Tawfik Bayouk <tawfik.bayouk@mobileye.com>
Subject: Re: [PATCH 6/6] tty: serial: amba-pl011: Parse bits option as 5, 6, 7 or 8 in _get_options
Date: Thu, 26 Oct 2023 14:13:49 +0300 (EEST) [thread overview]
Message-ID: <3cc1f559-468-8a58-a919-bdfb45ecc90@linux.intel.com> (raw)
In-Reply-To: <20231026-mbly-uart-v1-6-9258eea297d3@bootlin.com>
[-- Attachment #1: Type: text/plain, Size: 1030 bytes --]
On Thu, 26 Oct 2023, Théo Lebrun wrote:
> pl011_console_get_options() gets called to retrieve currently configured
> options from the registers. Previously, LCRH_TX.WLEN was being parsed
> as either 7 or 8 (fallback). Hardware supports values from 5 to 8
> inclusive, which pl011_set_termios() exploits for example.
>
> Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
> ---
> drivers/tty/serial/amba-pl011.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
> index 5774d48c7f16..b2062e4cbbab 100644
> --- a/drivers/tty/serial/amba-pl011.c
> +++ b/drivers/tty/serial/amba-pl011.c
> @@ -2384,10 +2384,7 @@ static void pl011_console_get_options(struct uart_amba_port *uap, int *baud,
> *parity = 'o';
> }
>
> - if ((lcr_h & 0x60) == UART01x_LCRH_WLEN_7)
> - *bits = 7;
> - else
> - *bits = 8;
> + *bits = FIELD_GET(0x60, lcr_h) + 5; /* from 5 to 8 inclusive */
0x60 needs to be replaced with a named define!
--
i.
next prev parent reply other threads:[~2023-10-26 11:14 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-26 10:41 [PATCH 0/6] Cleanup AMBA PL011 driver Théo Lebrun
2023-10-26 10:41 ` [PATCH 1/6] tty: serial: amba: cleanup whitespace Théo Lebrun
2023-10-26 12:05 ` Linus Walleij
2023-10-26 10:41 ` [PATCH 2/6] tty: serial: amba: Use BIT() macro for constant declarations Théo Lebrun
2023-10-26 13:37 ` Linus Walleij
2023-10-26 14:14 ` Théo Lebrun
2023-10-26 10:41 ` [PATCH 3/6] tty: serial: amba-pl011: cleanup driver Théo Lebrun
2023-10-26 13:38 ` Linus Walleij
2023-10-26 10:41 ` [PATCH 4/6] tty: serial: amba-pl011: replace TIOCMBIT macros by static functions Théo Lebrun
2023-10-26 13:46 ` Linus Walleij
2023-10-26 14:24 ` Hugo Villeneuve
2023-10-26 14:37 ` Théo Lebrun
2023-10-26 10:41 ` [PATCH 5/6] tty: serial: amba-pl011: unindent pl011_console_get_options function body Théo Lebrun
2023-10-26 13:46 ` Linus Walleij
2023-10-26 10:41 ` [PATCH 6/6] tty: serial: amba-pl011: Parse bits option as 5, 6, 7 or 8 in _get_options Théo Lebrun
2023-10-26 11:13 ` Ilpo Järvinen [this message]
2023-10-26 12:54 ` Théo Lebrun
2023-10-26 13:48 ` Linus Walleij
2023-10-26 14:18 ` Théo Lebrun
2023-10-26 14:53 ` Hugo Villeneuve
2023-10-31 9:35 ` Théo Lebrun
2023-10-31 10:11 ` Russell King (Oracle)
2023-10-31 11:04 ` Théo Lebrun
2023-10-31 11:22 ` Russell King (Oracle)
2023-10-31 13:51 ` Théo Lebrun
2023-10-31 14:05 ` Russell King (Oracle)
2023-10-31 14:30 ` Théo Lebrun
2023-10-31 13:39 ` Hugo Villeneuve
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