From: Jagan Teki <jagan@amarulasolutions.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>,
Inki Dae <inki.dae@samsung.com>,
Joonyoung Shim <jy0922.shim@samsung.com>,
Seung-Woo Kim <sw0312.kim@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Frieder Schrempf <frieder.schrempf@kontron.de>,
Fancy Fang <chen.fang@nxp.com>,
Tim Harvey <tharvey@gateworks.com>,
Michael Nazzareno Trimarchi <michael@amarulasolutions.com>,
Adam Ford <aford173@gmail.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Robert Foss <robert.foss@linaro.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Tommaso Merciai <tommaso.merciai@amarulasolutions.com>,
Marek Vasut <marex@denx.de>,
Matteo Lisi <matteo.lisi@engicam.com>,
dri-devel@lists.freedesktop.org,
linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
NXP Linux Team <linux-imx@nxp.com>,
linux-amarula <linux-amarula@amarulasolutions.com>
Subject: Re: [PATCH v3 08/13] drm: bridge: samsung-dsim: Add module init, exit
Date: Thu, 21 Jul 2022 16:42:45 +0530 [thread overview]
Message-ID: <CAMty3ZAwJ9SSiJatk0mjLUfyRUd=H7BwWooD65CY+az4ESUvbA@mail.gmail.com> (raw)
In-Reply-To: <de9b3aa2-c1d4-6ee5-5061-27cec4bab679@samsung.com>
Hi Marek,
On Thu, Jul 21, 2022 at 4:39 PM Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
>
> Hi Jagan,
>
> On 20.07.2022 17:52, Jagan Teki wrote:
> > Add module init and exit functions for the bridge to register
> > and unregister dsi_driver.
> >
> > Exynos drm driver stack will register the platform_driver separately
> > in the common of it's exynos_drm_drv.c including dsi_driver.
> >
> > Register again would return -EBUSY, so return 0 for such cases as
> > dsi_driver is already registered.
>
> I've already pointed that this is a bad style solution. It will also not
> work in the following cases:
Yes, I have seen it in v2. (sending again since its part of the series
and resolved other issues on v2)
>
> 1. exynos drm and samsung-dsim compiled as modules - samsung-dsim
> module, once loaded, will register the driver and exynos_drm won't be
> able to register the exynos_dsi.
>
> 2. multi-arch case - if one compiles a kernel (disto-style) with drivers
> for both supported architectures (exynos and imx) - in such case it will
> not work on imx, because exynos_drm driver will always register
> exynos_dsi driver first (even if the kernel is booted on non-exynos board).
Okay. I need to check the best way to handle this - so far this seems
new. any suggestions, please let me know.
Thanks,
Jagan.
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next prev parent reply other threads:[~2022-07-21 11:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-20 15:51 [PATCH v3 00/13] drm: bridge: Add Samsung MIPI DSIM bridge Jagan Teki
2022-07-20 15:51 ` [PATCH v3 01/13] drm: exynos: dsi: Restore proper bridge chain order Jagan Teki
2022-07-20 15:52 ` [PATCH v3 03/13] drm: bridge: samsung-dsim: Lookup OF-graph or Child node devices Jagan Teki
2022-07-20 15:52 ` [PATCH v3 04/13] drm: bridge: samsung-dsim: Handle platform init via driver_data Jagan Teki
2022-07-20 15:52 ` [PATCH v3 05/13] drm: bridge: samsung-dsim: Mark PHY as optional Jagan Teki
2022-07-20 15:52 ` [PATCH v3 06/13] drm: bridge: samsung-dsim: Add DSI init in bridge pre_enable() Jagan Teki
2022-07-22 15:35 ` Marek Szyprowski
2022-07-22 16:05 ` Dave Stevenson
2022-08-29 18:30 ` Jagan Teki
2022-08-30 14:24 ` Dave Stevenson
2022-07-20 15:52 ` [PATCH v3 07/13] drm: bridge: samsung-dsim: Fix PLL_P (PMS_P) offset Jagan Teki
2022-07-20 15:52 ` [PATCH v3 08/13] drm: bridge: samsung-dsim: Add module init, exit Jagan Teki
2022-07-21 11:09 ` Marek Szyprowski
2022-07-21 11:12 ` Jagan Teki [this message]
2022-07-20 15:52 ` [PATCH v3 09/13] drm: bridge: samsung-dsim: Add atomic_check Jagan Teki
2022-07-20 15:52 ` [PATCH v3 10/13] drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts Jagan Teki
2022-07-20 15:52 ` [PATCH v3 11/13] drm: bridge: samsung-dsim: Add input_bus_flags Jagan Teki
2022-07-20 15:52 ` [PATCH v3 12/13] dt-bindings: display: exynos: dsim: Add NXP i.MX8MM support Jagan Teki
2022-07-20 15:52 ` [PATCH v3 13/13] drm: bridge: samsung-dsim: Add " Jagan Teki
2022-07-21 7:19 ` [PATCH v3 00/13] drm: bridge: Add Samsung MIPI DSIM bridge Alexander Stein
[not found] ` <20220720155210.365977-3-jagan@amarulasolutions.com>
2022-07-26 7:28 ` [PATCH v3 02/13] drm: bridge: Add Samsung DSIM bridge driver Krzysztof Kozlowski
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