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Commit d1621803 authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/dsi: Support device shutdown 



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: default avatarThierry Reding <treding@nvidia.com>
parent c9eaa447

drivers/gpu/drm/drm_mipi_dsi.c

+10 −0
Original line number Diff line number Diff line
@@ -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);

}

include/drm/drm_mipi_dsi.h

+2 −0
Original line number Diff line number Diff line
@@ -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)