3  * Tegra host1x Channel
11 #include "channel.h"
45 	struct host1x *host = dev_get_drvdata(job->channel->dev->parent);  in host1x_job_submit()
51 struct host1x_channel *host1x_channel_get(struct host1x_channel *channel)  in host1x_channel_get()  argument
53 	kref_get(&channel->refcount);  in host1x_channel_get()
55 	return channel;  in host1x_channel_get()
60  * host1x_channel_get_index() - Attempt to get channel reference by index
62  * @index: Index of channel
64  * If channel number @index is currently allocated, increase its refcount
80 	struct host1x_channel *channel =  in release_channel()  local
82 	struct host1x *host = dev_get_drvdata(channel->dev->parent);  in release_channel()
85 	host1x_hw_cdma_stop(host, &channel->cdma);  in release_channel()
86 	host1x_cdma_deinit(&channel->cdma);  in release_channel()
88 	clear_bit(channel->id, chlist->allocated_channels);  in release_channel()
91 void host1x_channel_put(struct host1x_channel *channel)  in host1x_channel_put()  argument
93 	kref_put(&channel->refcount, release_channel);  in host1x_channel_put()
105 		dev_err(host->dev, "failed to find free channel\n");  in acquire_unused_channel()
117  * host1x_channel_request() - Allocate a channel
118  * @device: Host1x unit this channel will be used to send commands to
120  * Allocates a new host1x channel for @device. May return NULL if CDMA
127 	struct host1x_channel *channel;  in host1x_channel_request()  local
130 	channel = acquire_unused_channel(host);  in host1x_channel_request()
131 	if (!channel)  in host1x_channel_request()
134 	kref_init(&channel->refcount);  in host1x_channel_request()
135 	mutex_init(&channel->submitlock);  in host1x_channel_request()
136 	channel->dev = dev;  in host1x_channel_request()
138 	err = host1x_hw_channel_init(host, channel, channel->id);  in host1x_channel_request()
142 	err = host1x_cdma_init(&channel->cdma);  in host1x_channel_request()
146 	return channel;  in host1x_channel_request()
149 	clear_bit(channel->id, chlist->allocated_channels);  in host1x_channel_request()
151 	dev_err(dev, "failed to initialize channel\n");  in host1x_channel_request()