30  * i2c-algo-bit
50 	bus->func->drive_scl(bus, state);  in nvkm_i2c_bus_setscl()
57 	bus->func->drive_sda(bus, state);  in nvkm_i2c_bus_setsda()
64 	return bus->func->sense_scl(bus);  in nvkm_i2c_bus_getscl()
71 	return bus->func->sense_sda(bus);  in nvkm_i2c_bus_getsda()
75  * !i2c-algo-bit (off-chip i2c bus / hw i2c / internal bit-banging algo)
87 	ret = bus->func->xfer(bus, msgs, num);  in nvkm_i2c_bus_xfer()
111 	if (bus->func->init)  in nvkm_i2c_bus_init()
112 		bus->func->init(bus);  in nvkm_i2c_bus_init()
114 	mutex_lock(&bus->mutex);  in nvkm_i2c_bus_init()
115 	bus->enabled = true;  in nvkm_i2c_bus_init()
116 	mutex_unlock(&bus->mutex);  in nvkm_i2c_bus_init()
123 	mutex_lock(&bus->mutex);  in nvkm_i2c_bus_fini()
124 	bus->enabled = false;  in nvkm_i2c_bus_fini()
125 	mutex_unlock(&bus->mutex);  in nvkm_i2c_bus_fini()
131 	struct nvkm_i2c_pad *pad = bus->pad;  in nvkm_i2c_bus_release()
134 	mutex_unlock(&bus->mutex);  in nvkm_i2c_bus_release()
140 	struct nvkm_i2c_pad *pad = bus->pad;  in nvkm_i2c_bus_acquire()
144 	mutex_lock(&bus->mutex);  in nvkm_i2c_bus_acquire()
146 	if (bus->enabled)  in nvkm_i2c_bus_acquire()
149 		ret = -EIO;  in nvkm_i2c_bus_acquire()
152 		mutex_unlock(&bus->mutex);  in nvkm_i2c_bus_acquire()
168 		if ((bus->i2c.algo == &i2c_bit_algo) && (info[i].udelay != 0)) {  in nvkm_i2c_bus_probe()
169 			struct i2c_algo_bit_data *algo = bus->i2c.algo_data;  in nvkm_i2c_bus_probe()
171 				     info[i].udelay, algo->udelay);  in nvkm_i2c_bus_probe()
172 			orig_udelay = algo->udelay;  in nvkm_i2c_bus_probe()
173 			algo->udelay = info[i].udelay;  in nvkm_i2c_bus_probe()
176 		if (nvkm_probe_i2c(&bus->i2c, info[i].dev.addr) &&  in nvkm_i2c_bus_probe()
184 			struct i2c_algo_bit_data *algo = bus->i2c.algo_data;  in nvkm_i2c_bus_probe()
185 			algo->udelay = orig_udelay;  in nvkm_i2c_bus_probe()
190 	return -ENODEV;  in nvkm_i2c_bus_probe()
197 	if (bus && !WARN_ON(!bus->func)) {  in nvkm_i2c_bus_del()
199 		list_del(&bus->head);  in nvkm_i2c_bus_del()
200 		i2c_del_adapter(&bus->i2c);  in nvkm_i2c_bus_del()
201 		kfree(bus->i2c.algo_data);  in nvkm_i2c_bus_del()
212 	struct nvkm_device *device = pad->i2c->subdev.device;  in nvkm_i2c_bus_ctor()
213 	struct i2c_algo_bit_data *bit;  in nvkm_i2c_bus_ctor()  local
221 	bus->func = func;  in nvkm_i2c_bus_ctor()
222 	bus->pad = pad;  in nvkm_i2c_bus_ctor()
223 	bus->id = id;  in nvkm_i2c_bus_ctor()
224 	mutex_init(&bus->mutex);  in nvkm_i2c_bus_ctor()
225 	list_add_tail(&bus->head, &pad->i2c->bus);  in nvkm_i2c_bus_ctor()
228 	snprintf(bus->i2c.name, sizeof(bus->i2c.name), "nvkm-%s-bus-%04x",  in nvkm_i2c_bus_ctor()
229 		 dev_name(device->dev), id);  in nvkm_i2c_bus_ctor()
230 	bus->i2c.owner = THIS_MODULE;  in nvkm_i2c_bus_ctor()
231 	bus->i2c.dev.parent = device->dev;  in nvkm_i2c_bus_ctor()
233 	if ( bus->func->drive_scl &&  in nvkm_i2c_bus_ctor()
234 	    !nvkm_boolopt(device->cfgopt, "NvI2C", internal)) {  in nvkm_i2c_bus_ctor()
235 		if (!(bit = kzalloc(sizeof(*bit), GFP_KERNEL)))  in nvkm_i2c_bus_ctor()
236 			return -ENOMEM;  in nvkm_i2c_bus_ctor()
237 		bit->udelay = 10;  in nvkm_i2c_bus_ctor()
238 		bit->timeout = usecs_to_jiffies(2200);  in nvkm_i2c_bus_ctor()
239 		bit->data = bus;  in nvkm_i2c_bus_ctor()
240 		bit->pre_xfer = nvkm_i2c_bus_pre_xfer;  in nvkm_i2c_bus_ctor()
241 		bit->post_xfer = nvkm_i2c_bus_post_xfer;  in nvkm_i2c_bus_ctor()
242 		bit->setscl = nvkm_i2c_bus_setscl;  in nvkm_i2c_bus_ctor()
243 		bit->setsda = nvkm_i2c_bus_setsda;  in nvkm_i2c_bus_ctor()
244 		bit->getscl = nvkm_i2c_bus_getscl;  in nvkm_i2c_bus_ctor()
245 		bit->getsda = nvkm_i2c_bus_getsda;  in nvkm_i2c_bus_ctor()
246 		bus->i2c.algo_data = bit;  in nvkm_i2c_bus_ctor()
247 		ret = i2c_bit_add_bus(&bus->i2c);  in nvkm_i2c_bus_ctor()
249 		bus->i2c.algo = &nvkm_i2c_bus_algo;  in nvkm_i2c_bus_ctor()
250 		ret = i2c_add_adapter(&bus->i2c);  in nvkm_i2c_bus_ctor()
262 		return -ENOMEM;  in nvkm_i2c_bus_new_()