From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Jia Wang <wangjia@ultrarisc.com>
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Jiri Slaby" <jirislaby@kernel.org>,
"Paul Walmsley" <pjw@kernel.org>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Albert Ou" <aou@eecs.berkeley.edu>,
"Alexandre Ghiti" <alex@ghiti.fr>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-serial <linux-serial@vger.kernel.org>,
linux-riscv@lists.infradead.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v5 2/4] serial: 8250_dw: build Renesas RZN1 CPR value from DW_UART_CPR_* definitions
Date: Tue, 28 Apr 2026 13:58:52 +0300 [thread overview]
Message-ID: <afCS7GEG7gtyC7RH@ashevche-desk.local> (raw)
In-Reply-To: <177736726936.2886867.7725295920724488690.b4-reply@b4>
On Tue, Apr 28, 2026 at 05:07:49PM +0800, Jia Wang wrote:
> On 2026-04-28 11:41 +0300, Ilpo Järvinen wrote:
> > On Tue, 28 Apr 2026, Andy Shevchenko wrote:
> > > On Tue, Apr 28, 2026 at 01:26:27PM +0800, Jia Wang wrote:
...
> > #define DW_UART_CPR_FIFO_MODE_FROM_SIZE(size) \
> > ({ \
> > typeof (size) __size = size; \
> > \
> > static_assert(IS_ALIGNED((__size), 16)); \
> > static_assert(__size <= DW_UART_CPR_FIFO_MODE_MAX); \
> > \
> > FIELD_PREP_CONST(DW_UART_CPR_FIFO_MODE, __size / 16); \
> > })
>
> Thanks. I tried that approach, but the statement-expression form does
> not work in this case because the helper is used in static initializers.
> So I'll keep it as a plain expression macro for now, and just rework it
> into a cleaner multi-line form.
Still you can move FIELD_PREP_CONST() into it.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-04-28 10:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 5:26 [PATCH v5 0/4] serial: 8250_dw: Add support for UltraRISC DP1000 UART Jia Wang
2026-04-28 5:26 ` [PATCH v5 1/4] serial: 8250_dwlib: move DesignWare register definitions to header Jia Wang
2026-04-28 7:15 ` Andy Shevchenko
2026-04-28 5:26 ` [PATCH v5 2/4] serial: 8250_dw: build Renesas RZN1 CPR value from DW_UART_CPR_* definitions Jia Wang
2026-04-28 7:28 ` Andy Shevchenko
2026-04-28 8:36 ` Jia Wang
2026-04-28 8:41 ` Ilpo Järvinen
2026-04-28 9:07 ` Jia Wang
2026-04-28 10:58 ` Andy Shevchenko [this message]
2026-04-28 10:57 ` Andy Shevchenko
2026-04-28 5:26 ` [PATCH v5 3/4] dt-bindings: serial: snps-dw-apb-uart: Add UltraRISC DP1000 UART Jia Wang
2026-04-28 5:26 ` [PATCH v5 4/4] serial: 8250_dw: Use a fixed CPR value for " Jia Wang
2026-04-28 8:19 ` Andy Shevchenko
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