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drm/dsi: Support device shutdown

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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>
This commit is contained in:
Thierry Reding 2014-04-29 17:19:57 +02:00
parent c9eaa447e7
commit d16218030f
2 changed files with 12 additions and 0 deletions
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10
drivers/gpu/drm/drm_mipi_dsi.c
View file

@ -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);
}

2
include/drm/drm_mipi_dsi.h
View file

@ -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)