From: Thierry Reding treding@nvidia.com
Hook up the MIPI DSI bus's .shutdown() function to allow drivers to implement code that should be run when a device is shut down.
Signed-off-by: Thierry Reding treding@nvidia.com --- drivers/gpu/drm/drm_mipi_dsi.c | 10 ++++++++++ include/drm/drm_mipi_dsi.h | 2 ++ 2 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 09821f46d768..e633df2f68d8 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -282,6 +282,14 @@ static int mipi_dsi_drv_remove(struct device *dev) return drv->remove(dsi); }
+static void mipi_dsi_drv_shutdown(struct device *dev) +{ + struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev); + + drv->shutdown(dsi); +} + /** * mipi_dsi_driver_register - register a driver for DSI devices * @drv: DSI driver structure @@ -293,6 +301,8 @@ int mipi_dsi_driver_register(struct mipi_dsi_driver *drv) drv->driver.probe = mipi_dsi_drv_probe; if (drv->remove) drv->driver.remove = mipi_dsi_drv_remove; + if (drv->shutdown) + drv->driver.shutdown = mipi_dsi_drv_shutdown;
return driver_register(&drv->driver); } diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 7209df15a3cd..944f33f8ba38 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -135,11 +135,13 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, unsigned int channel, * @driver: device driver model driver * @probe: callback for device binding * @remove: callback for device unbinding + * @shutdown: called at shutdown time to quiesce the device */ struct mipi_dsi_driver { struct device_driver driver; int(*probe)(struct mipi_dsi_device *dsi); int(*remove)(struct mipi_dsi_device *dsi); + void (*shutdown)(struct mipi_dsi_device *dsi); };
#define to_mipi_dsi_driver(d) container_of(d, struct mipi_dsi_driver, driver)