154 	struct drm_dp_aux_msg msg;  in drm_dp_dpcd_access()  local
158 	memset(&msg, 0, sizeof(msg));  in drm_dp_dpcd_access()
159 	msg.address = offset;  in drm_dp_dpcd_access()
160 	msg.request = request;  in drm_dp_dpcd_access()
161 	msg.buffer = buffer;  in drm_dp_dpcd_access()
162 	msg.size = size;  in drm_dp_dpcd_access()
174 		ret = aux->transfer(aux, &msg);  in drm_dp_dpcd_access()
176 			native_reply = msg.reply & DP_AUX_NATIVE_REPLY_MASK;  in drm_dp_dpcd_access()
301 static void drm_dp_i2c_msg_write_status_update(struct drm_dp_aux_msg *msg)  in drm_dp_i2c_msg_write_status_update()  argument
308 	if ((msg->request & ~DP_AUX_I2C_MOT) == DP_AUX_I2C_WRITE) {  in drm_dp_i2c_msg_write_status_update()
309 		msg->request &= DP_AUX_I2C_MOT;  in drm_dp_i2c_msg_write_status_update()
310 		msg->request |= DP_AUX_I2C_WRITE_STATUS_UPDATE;  in drm_dp_i2c_msg_write_status_update()
314 static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)  in drm_dp_i2c_do_msg()  argument
329 		ret = aux->transfer(aux, msg);  in drm_dp_i2c_do_msg()
349 		switch (msg->reply & DP_AUX_NATIVE_REPLY_MASK) {  in drm_dp_i2c_do_msg()
359 			       aux->name, ret, msg->size);  in drm_dp_i2c_do_msg()
378 			       aux->name, msg->reply);  in drm_dp_i2c_do_msg()
382 		switch (msg->reply & DP_AUX_I2C_REPLY_MASK) {  in drm_dp_i2c_do_msg()
388 			if (ret != msg->size)  in drm_dp_i2c_do_msg()
389 				drm_dp_i2c_msg_write_status_update(msg);  in drm_dp_i2c_do_msg()
394 			       aux->name, ret, msg->size);  in drm_dp_i2c_do_msg()
408 			drm_dp_i2c_msg_write_status_update(msg);  in drm_dp_i2c_do_msg()
414 			       aux->name, msg->reply);  in drm_dp_i2c_do_msg()
423 static void drm_dp_i2c_msg_set_request(struct drm_dp_aux_msg *msg,  in drm_dp_i2c_msg_set_request()  argument
426 	msg->request = (i2c_msg->flags & I2C_M_RD) ?  in drm_dp_i2c_msg_set_request()
429 		msg->request |= DP_AUX_I2C_MOT;  in drm_dp_i2c_msg_set_request()
441 	struct drm_dp_aux_msg msg = *orig_msg;  in drm_dp_i2c_drain_msg()  local
443 	while (msg.size > 0) {  in drm_dp_i2c_drain_msg()
444 		err = drm_dp_i2c_do_msg(aux, &msg);  in drm_dp_i2c_drain_msg()
448 		if (err < msg.size && err < ret) {  in drm_dp_i2c_drain_msg()
450 			       aux->name, msg.size, err);  in drm_dp_i2c_drain_msg()
454 		msg.size -= err;  in drm_dp_i2c_drain_msg()
455 		msg.buffer += err;  in drm_dp_i2c_drain_msg()
467 	struct drm_dp_aux_msg msg;  in drm_dp_i2c_xfer()  local
470 	memset(&msg, 0, sizeof(msg));  in drm_dp_i2c_xfer()
473 		msg.address = msgs[i].addr;  in drm_dp_i2c_xfer()
474 		drm_dp_i2c_msg_set_request(&msg, &msgs[i]);  in drm_dp_i2c_xfer()
479 		msg.buffer = NULL;  in drm_dp_i2c_xfer()
480 		msg.size = 0;  in drm_dp_i2c_xfer()
481 		err = drm_dp_i2c_do_msg(aux, &msg);  in drm_dp_i2c_xfer()
487 		drm_dp_i2c_msg_set_request(&msg, &msgs[i]);  in drm_dp_i2c_xfer()
496 		for (j = 0; j < msgs[i].len; j += msg.size) {  in drm_dp_i2c_xfer()
497 			msg.buffer = msgs[i].buf + j;  in drm_dp_i2c_xfer()
498 			msg.size = min(transfer_size, msgs[i].len - j);  in drm_dp_i2c_xfer()
500 			err = drm_dp_i2c_drain_msg(aux, &msg);  in drm_dp_i2c_xfer()
506 			drm_dp_i2c_msg_set_request(&msg, &msgs[i]);  in drm_dp_i2c_xfer()
521 	msg.request &= ~DP_AUX_I2C_MOT;  in drm_dp_i2c_xfer()
522 	msg.buffer = NULL;  in drm_dp_i2c_xfer()
523 	msg.size = 0;  in drm_dp_i2c_xfer()
524 	(void)drm_dp_i2c_do_msg(aux, &msg);  in drm_dp_i2c_xfer()