linux-kernel - Re: [PATCH] drm/panel: panasonic-vvx10f034n00: transition to mipi

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Message-ID: <4573ac2e-795b-42d7-a30b-892bb932aed4@linaro.org>
Date: Tue, 6 Jan 2026 09:56:29 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Avinal Kumar <avinal.xlvii@...il.com>
Cc: jessica.zhang@....qualcomm.com, maarten.lankhorst@...ux.intel.com,
 mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel: panasonic-vvx10f034n00: transition to mipi_dsi
 wrapped functions

On 1/6/26 09:53, Avinal Kumar wrote:
> Hello Neil,
> 
> Unlike mipi_dsi_turn_on_peripheral, mipi_dsi_shutdown_peripheral isn't marked deprecated, and no multi function available yet. And I wanted to keep it simple for the first patch.
> 
> If it is okay, I can:
> - Create another patch or update this patch, to add a mipi_dsi_shutdown_peripheral_multi() function and deprecate the normal function.
> - Update the remaining function in this patch.
> 
> Please let me know. Thank you

Yes please do that, first patch introduce mipi_dsi_shutdown_peripheral_multi(), then second patch switch to multi
for wuxga_nt_panel_on() and wuxga_nt_panel_disable().

Thanks,
Neil

> 
> 
> On Tue, Jan 6, 2026 at 1:51 PM <neil.armstrong@...aro.org <mailto:neil.armstrong@...aro.org>> wrote:
> 
>     Hi,
> 
>     On 11/27/25 17:08, Avinal Kumar wrote:
>      > Changes the panasonic-vvx10f034n00 panel to multi
>      > style functions for improved error handling.
>      >
>      > Signed-off-by: Avinal Kumar <avinal.xlvii@...il.com <mailto:avinal.xlvii@...il.com>>
>      > ---
>      > Here is the todo list for reference: https://www.kernel.org/doc/html/latest/gpu/todo.html#transition-away-from-using-deprecated-mipi-dsi-functions <https://www.kernel.org/doc/html/latest/gpu/todo.html#transition-away-from-using-deprecated-mipi-dsi-functions>
>      >
>      > This is my first patch in Linux Kernel :)
>      >
>      >   drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c | 7 ++++++-
>      >   1 file changed, 6 insertions(+), 1 deletion(-)
>      >
>      > diff --git a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
>      > index 3c3308fc55df..03c87c02fb57 100644
>      > --- a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
>      > +++ b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
>      > @@ -44,7 +44,12 @@ static inline struct wuxga_nt_panel *to_wuxga_nt_panel(struct drm_panel *panel)
>      >
>      >   static int wuxga_nt_panel_on(struct wuxga_nt_panel *wuxga_nt)
>      >   {
>      > -     return mipi_dsi_turn_on_peripheral(wuxga_nt->dsi);
>      > +     struct mipi_dsi_multi_context dsi_ctx = {
>      > +             .dsi = wuxga_nt->dsi
>      > +     };
>      > +
>      > +     mipi_dsi_turn_on_peripheral_multi(&dsi_ctx);
>      > +     return dsi_ctx.accum_err;
>      >   }
>      >
>      >   static int wuxga_nt_panel_disable(struct drm_panel *panel)
> 
>     Why didn't you also update wuxga_nt_panel_disable() ?
> 
>     Thanks,
>     Neil
>