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Commit f67524ca authored by Thierry Reding's avatar Thierry Reding
Browse files

gpu: host1x: Represent host1x bus devices in debugfs 



This new debugfs file represents the state of host1x bus devices,
specifying the list of subdevices and marking which ones have
successfully registered.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 0747a672

drivers/gpu/host1x/bus.c

+35 −0
Original line number Original line Diff line number Diff line
@@ -15,8 +15,10 @@ 
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

 */





#include <linux/debugfs.h>

#include <linux/host1x.h>

#include <linux/host1x.h>

#include <linux/of.h>

#include <linux/of.h>

#include <linux/seq_file.h>

#include <linux/slab.h>

#include <linux/slab.h>

#include <linux/of_device.h>

#include <linux/of_device.h>
@@ -500,6 +502,36 @@ static void host1x_detach_driver(struct host1x *host1x, 
	mutex_unlock(&host1x->devices_lock);

	mutex_unlock(&host1x->devices_lock);

}

}





static int host1x_devices_show(struct seq_file *s, void *data)

{

	struct host1x *host1x = s->private;

	struct host1x_device *device;



	mutex_lock(&host1x->devices_lock);



	list_for_each_entry(device, &host1x->devices, list) {

		struct host1x_subdev *subdev;



		seq_printf(s, "%s\n", dev_name(&device->dev));



		mutex_lock(&device->subdevs_lock);



		list_for_each_entry(subdev, &device->active, list)

			seq_printf(s, "  %pOFf: %s\n", subdev->np,

				   dev_name(subdev->client->dev));



		list_for_each_entry(subdev, &device->subdevs, list)

			seq_printf(s, "  %pOFf:\n", subdev->np);



		mutex_unlock(&device->subdevs_lock);

	}



	mutex_unlock(&host1x->devices_lock);



	return 0;

}

DEFINE_SHOW_ATTRIBUTE(host1x_devices);



/**

/**

 * host1x_register() - register a host1x controller

 * host1x_register() - register a host1x controller

 * @host1x: host1x controller

 * @host1x: host1x controller
@@ -523,6 +555,9 @@ int host1x_register(struct host1x *host1x) 




	mutex_unlock(&drivers_lock);

	mutex_unlock(&drivers_lock);





	debugfs_create_file("devices", S_IRUGO, host1x->debugfs, host1x,

			    &host1x_devices_fops);



	return 0;

	return 0;

}

}