drivers/macintosh/windfarm_smu_sat.c

45 	struct wf_sat		*sat;
54 	struct wf_sat *sat;
62 	if (sat_id > 1 || (sat = sats[sat_id]) == NULL)
65 	err = i2c_smbus_write_word_data(sat->i2c, 8, id << 8);
71 	err = i2c_smbus_read_word_data(sat->i2c, 9);
89 		err = i2c_smbus_read_i2c_block_data(sat->i2c, 0xa, 4, data);
101 	printk(KERN_DEBUG "sat %d partition %x:", sat_id, id);
115 static int wf_sat_read_cache(struct wf_sat *sat)
119 	err = i2c_smbus_read_i2c_block_data(sat->i2c, 0x3f, 16, sat->cache);
122 	sat->last_read = jiffies;
129 			       16, 1, sat->cache, 16, false);
138 	struct wf_sat *sat = sens->sat;
142 	if (sat->i2c == NULL)
145 	mutex_lock(&sat->mutex);
146 	if (time_after(jiffies, (sat->last_read + MAX_AGE))) {
147 		err = wf_sat_read_cache(sat);
153 	val = ((sat->cache[i] << 8) + sat->cache[i+1]) << sens->shift;
157 		val = (val * ((sat->cache[i] << 8) + sat->cache[i+1])) >> 4;
164 	mutex_unlock(&sat->mutex);
170 	struct wf_sat *sat = container_of(ref, struct wf_sat, ref);
172 	if (sat->nr >= 0)
173 		sats[sat->nr] = NULL;
174 	of_node_put(sat->node);
175 	kfree(sat);
181 	struct wf_sat *sat = sens->sat;
184 	kref_put(&sat->ref, wf_sat_release);
196 	struct wf_sat *sat;
206 	sat = kzalloc(sizeof(struct wf_sat), GFP_KERNEL);
207 	if (sat == NULL)
209 	sat->nr = -1;
210 	sat->node = of_node_get(dev);
211 	kref_init(&sat->ref);
212 	mutex_init(&sat->mutex);
213 	sat->i2c = client;
214 	INIT_LIST_HEAD(&sat->sensors);
215 	i2c_set_clientdata(client, sat);
241 		if (sat->nr < 0)
242 			sat->nr = chip;
243 		else if (sat->nr != chip) {
273 		sens->sat = sat;
281 			list_add(&sens->link, &sat->sensors);
282 			kref_get(&sat->ref);
290 		cpu = 2 * sat->nr + core;
300 		sens->sat = sat;
308 			list_add(&sens->link, &sat->sensors);
309 			kref_get(&sat->ref);
313 	if (sat->nr >= 0)
314 		sats[sat->nr] = sat;
321 	struct wf_sat *sat = i2c_get_clientdata(client);
325 	while(!list_empty(&sat->sensors)) {
326 		sens = list_first_entry(&sat->sensors,
331 	sat->i2c = NULL;
332 	kref_put(&sat->ref, wf_sat_release);
336 	{ "MAC,smu-sat", 0 },
342 	{ .compatible = "smu-sat", },