linux-kernel - Re: [Intel-gfx] [PATCH v2 18/39] drm/i915: intel_pm.c: fix some ascii artwork at kernel-doc

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Message-ID: <YvIu/oCnkDbdLqou@intel.com>
Date:   Tue, 9 Aug 2022 05:55:10 -0400
From:   Rodrigo Vivi <rodrigo.vivi@...el.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
CC:     David Airlie <airlied@...ux.ie>, <intel-gfx@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
Subject: Re: [Intel-gfx] [PATCH v2 18/39] drm/i915: intel_pm.c: fix some
 ascii artwork at kernel-doc

On Wed, Jul 13, 2022 at 09:12:06AM +0100, Mauro Carvalho Chehab wrote:
> Preserving ascii artwork on kernel-docs is tricky, as it needs
> to respect both the Sphinx rules and be properly parsed by
> kernel-doc script.
> 
> The Sphinx syntax require code-blocks, which is:
> 
> 	::
> 
> followed by a blank line and indented lines.
> 
> But kernel-doc only works fine if the first and the last line
> are indented with the same amount of spaces.
> 
> Also, a "\" at the end means that the next line should be merged
> with the first one.

my first reaction was: "do we really need those new empty ( ) blocks?"

Then I read this ;)

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@...el.com>

> 
> Change the ascii artwork to be on code-blocks, starting all
> lines at the same characters and not ending with a backslash.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
> ---
> 
> To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
> See [PATCH v2 00/39] at: https://lore.kernel.org/all/cover.1657699522.git.mchehab@kernel.org/
> 
>  drivers/gpu/drm/i915/intel_pm.c | 33 ++++++++++++++++++---------------
>  1 file changed, 18 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index f06babdb3a8c..d3393752b04b 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -684,18 +684,20 @@ static const struct intel_watermark_params i845_wm_info = {
>   * FIFO is relatively small compared to the amount of data
>   * fetched.
>   *
> - * The FIFO level vs. time graph might look something like:
> + * The FIFO level vs. time graph might look something like::
>   *
> - *   |\   |\
> - *   | \  | \
> - * __---__---__ (- plane active, _ blanking)
> - * -> time
> + *   ^
> + *   |   |\   |\      (                          )
> + *   |   | \  | \     (                          )
> + *   |   __---__---__ (- plane active, _ blanking)
> + *   +-------------------> time
>   *
> - * or perhaps like this:
> + * or perhaps like this::
>   *
> - *   |\|\  |\|\
> - * __----__----__ (- plane active, _ blanking)
> - * -> time
> + *   ^
> + *   |     |\|\  |\|\   (                          )
> + *   |   __----__----__ (- plane active, _ blanking)
> + *   +-------------------> time
>   *
>   * Returns:
>   * The watermark in bytes
> @@ -731,13 +733,14 @@ static unsigned int intel_wm_method1(unsigned int pixel_rate,
>   * FIFO is relatively large compared to the amount of data
>   * fetched.
>   *
> - * The FIFO level vs. time graph might look something like:
> + * The FIFO level vs. time graph might look something like::
>   *
> - *    |\___       |\___
> - *    |    \___   |    \___
> - *    |        \  |        \
> - * __ --__--__--__--__--__--__ (- plane active, _ blanking)
> - * -> time
> + *   ^
> + *   |     |\___       |\___        (                          )
> + *   |     |    \___   |    \___    (                          )
> + *   |     |        \  |        \   (                          )
> + *   |  __ --__--__--__--__--__--__ (- plane active, _ blanking)
> + *   +---------------------------------> time
>   *
>   * Returns:
>   * The watermark in bytes
> -- 
> 2.36.1
>