39 	struct nouveau_i2c_chan *port = data;  in i2c_drive_scl()  local
40 	if (port->type == 0) {  in i2c_drive_scl()
41 		u8 val = NVReadVgaCrtc(port->dev, 0, port->drive);  in i2c_drive_scl()
44 		NVWriteVgaCrtc(port->dev, 0, port->drive, val | 0x01);  in i2c_drive_scl()
46 	if (port->type == 4) {  in i2c_drive_scl()
47 		nv_mask(port->dev, port->drive, 0x2f, state ? 0x21 : 0x01);  in i2c_drive_scl()
49 	if (port->type == 5) {  in i2c_drive_scl()
50 		if (state) port->state |= 0x01;  in i2c_drive_scl()
51 		else	   port->state &= 0xfe;  in i2c_drive_scl()
52 		nv_wr32(port->dev, port->drive, 4 | port->state);  in i2c_drive_scl()
59 	struct nouveau_i2c_chan *port = data;  in i2c_drive_sda()  local
60 	if (port->type == 0) {  in i2c_drive_sda()
61 		u8 val = NVReadVgaCrtc(port->dev, 0, port->drive);  in i2c_drive_sda()
64 		NVWriteVgaCrtc(port->dev, 0, port->drive, val | 0x01);  in i2c_drive_sda()
66 	if (port->type == 4) {  in i2c_drive_sda()
67 		nv_mask(port->dev, port->drive, 0x1f, state ? 0x11 : 0x01);  in i2c_drive_sda()
69 	if (port->type == 5) {  in i2c_drive_sda()
70 		if (state) port->state |= 0x02;  in i2c_drive_sda()
71 		else	   port->state &= 0xfd;  in i2c_drive_sda()
72 		nv_wr32(port->dev, port->drive, 4 | port->state);  in i2c_drive_sda()
79 	struct nouveau_i2c_chan *port = data;  in i2c_sense_scl()  local
80 	struct drm_nouveau_private *dev_priv = port->dev->dev_private;  in i2c_sense_scl()
81 	if (port->type == 0) {  in i2c_sense_scl()
82 		return !!(NVReadVgaCrtc(port->dev, 0, port->sense) & 0x04);  in i2c_sense_scl()
84 	if (port->type == 4) {  in i2c_sense_scl()
85 		return !!(nv_rd32(port->dev, port->sense) & 0x00040000);  in i2c_sense_scl()
87 	if (port->type == 5) {  in i2c_sense_scl()
89 			return !!(nv_rd32(port->dev, port->sense) & 0x01);  in i2c_sense_scl()
91 			return !!(nv_rd32(port->dev, port->sense) & 0x10);  in i2c_sense_scl()
99 	struct nouveau_i2c_chan *port = data;  in i2c_sense_sda()  local
100 	struct drm_nouveau_private *dev_priv = port->dev->dev_private;  in i2c_sense_sda()
101 	if (port->type == 0) {  in i2c_sense_sda()
102 		return !!(NVReadVgaCrtc(port->dev, 0, port->sense) & 0x08);  in i2c_sense_sda()
104 	if (port->type == 4) {  in i2c_sense_sda()
105 		return !!(nv_rd32(port->dev, port->sense) & 0x00080000);  in i2c_sense_sda()
107 	if (port->type == 5) {  in i2c_sense_sda()
109 			return !!(nv_rd32(port->dev, port->sense) & 0x02);  in i2c_sense_sda()
111 			return !!(nv_rd32(port->dev, port->sense) & 0x20);  in i2c_sense_sda()
117 i2c_delay(struct nouveau_i2c_chan *port, u32 nsec)  in i2c_delay()  argument
123 i2c_raise_scl(struct nouveau_i2c_chan *port)  in i2c_raise_scl()  argument
127 	i2c_drive_scl(port, 1);  in i2c_raise_scl()
129 		i2c_delay(port, T_RISEFALL);  in i2c_raise_scl()
130 	} while (!i2c_sense_scl(port) && --timeout);  in i2c_raise_scl()
136 i2c_start(struct nouveau_i2c_chan *port)  in i2c_start()  argument
140 	port->state  = i2c_sense_scl(port);  in i2c_start()
141 	port->state |= i2c_sense_sda(port) << 1;  in i2c_start()
142 	if (port->state != 3) {  in i2c_start()
143 		i2c_drive_scl(port, 0);  in i2c_start()
144 		i2c_drive_sda(port, 1);  in i2c_start()
145 		if (!i2c_raise_scl(port))  in i2c_start()
149 	i2c_drive_sda(port, 0);  in i2c_start()
150 	i2c_delay(port, T_HOLD);  in i2c_start()
151 	i2c_drive_scl(port, 0);  in i2c_start()
152 	i2c_delay(port, T_HOLD);  in i2c_start()
157 i2c_stop(struct nouveau_i2c_chan *port)  in i2c_stop()  argument
159 	i2c_drive_scl(port, 0);  in i2c_stop()
160 	i2c_drive_sda(port, 0);  in i2c_stop()
161 	i2c_delay(port, T_RISEFALL);  in i2c_stop()
163 	i2c_drive_scl(port, 1);  in i2c_stop()
164 	i2c_delay(port, T_HOLD);  in i2c_stop()
165 	i2c_drive_sda(port, 1);  in i2c_stop()
166 	i2c_delay(port, T_HOLD);  in i2c_stop()
170 i2c_bitw(struct nouveau_i2c_chan *port, int sda)  in i2c_bitw()  argument
172 	i2c_drive_sda(port, sda);  in i2c_bitw()
173 	i2c_delay(port, T_RISEFALL);  in i2c_bitw()
175 	if (!i2c_raise_scl(port))  in i2c_bitw()
177 	i2c_delay(port, T_HOLD);  in i2c_bitw()
179 	i2c_drive_scl(port, 0);  in i2c_bitw()
180 	i2c_delay(port, T_HOLD);  in i2c_bitw()
185 i2c_bitr(struct nouveau_i2c_chan *port)  in i2c_bitr()  argument
189 	i2c_drive_sda(port, 1);  in i2c_bitr()
190 	i2c_delay(port, T_RISEFALL);  in i2c_bitr()
192 	if (!i2c_raise_scl(port))  in i2c_bitr()
194 	i2c_delay(port, T_HOLD);  in i2c_bitr()
196 	sda = i2c_sense_sda(port);  in i2c_bitr()
198 	i2c_drive_scl(port, 0);  in i2c_bitr()
199 	i2c_delay(port, T_HOLD);  in i2c_bitr()
204 i2c_get_byte(struct nouveau_i2c_chan *port, u8 *byte, bool last)  in i2c_get_byte()  argument
210 		bit = i2c_bitr(port);  in i2c_get_byte()
216 	return i2c_bitw(port, last ? 1 : 0);  in i2c_get_byte()
220 i2c_put_byte(struct nouveau_i2c_chan *port, u8 byte)  in i2c_put_byte()  argument
224 		ret = i2c_bitw(port, !!(byte & (1 << i)));  in i2c_put_byte()
229 	ret = i2c_bitr(port);  in i2c_put_byte()
236 i2c_addr(struct nouveau_i2c_chan *port, struct i2c_msg *msg)  in i2c_addr()  argument
241 	return i2c_put_byte(port, addr);  in i2c_addr()
247 	struct nouveau_i2c_chan *port = (struct nouveau_i2c_chan *)adap;  in i2c_bit_xfer()  local
255 		ret = i2c_start(port);  in i2c_bit_xfer()
257 			ret = i2c_addr(port, msg);  in i2c_bit_xfer()
261 				ret = i2c_get_byte(port, ptr++, !remaining);  in i2c_bit_xfer()
264 				ret = i2c_put_byte(port, *ptr++);  in i2c_bit_xfer()
270 	i2c_stop(port);  in i2c_bit_xfer()
317 	struct nouveau_i2c_chan *port;  in nouveau_i2c_init()  local
365 		port = kzalloc(sizeof(*port), GFP_KERNEL);  in nouveau_i2c_init()
366 		if (port == NULL) {  in nouveau_i2c_init()
371 		port->type = entry[3];  in nouveau_i2c_init()
373 			port->type &= 0x07;  in nouveau_i2c_init()
374 			if (port->type == 0x07)  in nouveau_i2c_init()
375 				port->type = 0xff;  in nouveau_i2c_init()
378 		if (port->type == 0xff) {  in nouveau_i2c_init()
379 			kfree(port);  in nouveau_i2c_init()
383 		switch (port->type) {  in nouveau_i2c_init()
385 			port->drive = entry[0];  in nouveau_i2c_init()
386 			port->sense = entry[1];  in nouveau_i2c_init()
387 			port->adapter.algo = &i2c_bit_algo;  in nouveau_i2c_init()
390 			port->drive = 0x600800 + entry[1];  in nouveau_i2c_init()
391 			port->sense = port->drive;  in nouveau_i2c_init()
392 			port->adapter.algo = &i2c_bit_algo;  in nouveau_i2c_init()
395 			port->drive = entry[0] & 0x0f;  in nouveau_i2c_init()
397 				if (port->drive >= ARRAY_SIZE(nv50_i2c_port))  in nouveau_i2c_init()
399 				port->drive = nv50_i2c_port[port->drive];  in nouveau_i2c_init()
400 				port->sense = port->drive;  in nouveau_i2c_init()
402 				port->drive = 0x00d014 + (port->drive * 0x20);  in nouveau_i2c_init()
403 				port->sense = port->drive;  in nouveau_i2c_init()
405 			port->adapter.algo = &i2c_bit_algo;  in nouveau_i2c_init()
408 			port->drive = entry[0];  in nouveau_i2c_init()
409 			port->sense = port->drive;  in nouveau_i2c_init()
410 			port->adapter.algo = &nouveau_dp_i2c_algo;  in nouveau_i2c_init()
416 		if (!port->adapter.algo) {  in nouveau_i2c_init()
418 				 i, port->type, port->drive, port->sense);  in nouveau_i2c_init()
419 			kfree(port);  in nouveau_i2c_init()
423 		snprintf(port->adapter.name, sizeof(port->adapter.name),  in nouveau_i2c_init()
425 		port->adapter.owner = THIS_MODULE;  in nouveau_i2c_init()
426 		port->adapter.dev.parent = &dev->pdev->dev;  in nouveau_i2c_init()
427 		port->dev = dev;  in nouveau_i2c_init()
428 		port->index = i;  in nouveau_i2c_init()
429 		port->dcb = ROM32(entry[0]);  in nouveau_i2c_init()
430 		i2c_set_adapdata(&port->adapter, i2c);  in nouveau_i2c_init()
432 		ret = i2c_add_adapter(&port->adapter);  in nouveau_i2c_init()
435 			kfree(port);  in nouveau_i2c_init()
439 		list_add_tail(&port->head, &dev_priv->i2c_ports);  in nouveau_i2c_init()
449 	struct nouveau_i2c_chan *port, *tmp;  in nouveau_i2c_fini()  local
451 	list_for_each_entry_safe(port, tmp, &dev_priv->i2c_ports, head) {  in nouveau_i2c_fini()
452 		i2c_del_adapter(&port->adapter);  in nouveau_i2c_fini()
453 		kfree(port);  in nouveau_i2c_fini()
461 	struct nouveau_i2c_chan *port;  in nouveau_i2c_find()  local
476 	list_for_each_entry(port, &dev_priv->i2c_ports, head) {  in nouveau_i2c_find()
477 		if (port->index == index)  in nouveau_i2c_find()
481 	if (&port->head == &dev_priv->i2c_ports)  in nouveau_i2c_find()
484 	if (dev_priv->card_type >= NV_50 && (port->dcb & 0x00000100)) {  in nouveau_i2c_find()
486 		if (port->type == 6) {  in nouveau_i2c_find()
487 			reg += port->drive * 0x50;  in nouveau_i2c_find()
490 			reg += ((port->dcb & 0x1e00) >> 9) * 0x50;  in nouveau_i2c_find()
500 	return port;  in nouveau_i2c_find()