[RFC PATCH 09/17] drm: bridge: samsung-dsim: Add module init, exit
From: Jagan Teki <jagan@amarulasolutions.com>
Date: 2021-07-04 09:05:07
Also in:
dri-devel, linux-devicetree, linux-samsung-soc
Subsystem:
drm driver for samsung mipi dsim bridge, drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, the rest · Maintainers:
Inki Dae, Jagan Teki, Marek Szyprowski, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Linus Torvalds
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. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- drivers/gpu/drm/bridge/samsung-dsim.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index eed6b3ffdea7..627580abd6df 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c@@ -1878,6 +1878,28 @@ struct platform_driver dsi_driver = { }, }; +static int __init samsung_mipi_dsim_init(void) +{ + int ret; + + ret = platform_driver_register(&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. + */ + return ret == -EBUSY ? 0 : ret; +} +module_init(samsung_mipi_dsim_init); + +static void __exit samsung_mipi_dsim_exit(void) +{ + platform_driver_unregister(&dsi_driver); +} +module_exit(samsung_mipi_dsim_exit); + MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>"); MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>"); MODULE_AUTHOR("Jagan Teki <jagan@amarulasolutions.com>");
--
2.25.1
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