41 static int edp_msg_fifo_tx(struct edp_aux *aux, struct drm_dp_aux_msg *msg)  in edp_msg_fifo_tx()  argument
45 	bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ);  in edp_msg_fifo_tx()
46 	bool read = msg->request & (DP_AUX_I2C_READ & DP_AUX_NATIVE_READ);  in edp_msg_fifo_tx()
47 	u8 *msgdata = msg->buffer;  in edp_msg_fifo_tx()
53 		len = msg->size + 4;  in edp_msg_fifo_tx()
62 	data[0] = (msg->address >> 16) & 0xf;	/* addr[19:16] */  in edp_msg_fifo_tx()
66 	data[1] = (msg->address >> 8) & 0xff;	/* addr[15:8] */  in edp_msg_fifo_tx()
67 	data[2] = msg->address & 0xff;		/* addr[7:0] */  in edp_msg_fifo_tx()
68 	data[3] = (msg->size - 1) & 0xff;	/* len[7:0] */  in edp_msg_fifo_tx()
88 static int edp_msg_fifo_rx(struct edp_aux *aux, struct drm_dp_aux_msg *msg)  in edp_msg_fifo_rx()  argument
93 	u32 len = msg->size;  in edp_msg_fifo_rx()
98 	dp = msg->buffer;  in edp_msg_fifo_rx()
118 ssize_t edp_aux_transfer(struct drm_dp_aux *drm_aux, struct drm_dp_aux_msg *msg)  in edp_aux_transfer()  argument
122 	bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ);  in edp_aux_transfer()
123 	bool read = msg->request & (DP_AUX_I2C_READ & DP_AUX_NATIVE_READ);  in edp_aux_transfer()
126 	if ((msg->size == 0) || (msg->buffer == NULL)) {  in edp_aux_transfer()
127 		msg->reply = native ?  in edp_aux_transfer()
129 		return msg->size;  in edp_aux_transfer()
133 	if ((native && (msg->size > AUX_CMD_NATIVE_MAX)) ||  in edp_aux_transfer()
134 		(msg->size > AUX_CMD_I2C_MAX)) {  in edp_aux_transfer()
136 			__func__, msg->size, msg->request);  in edp_aux_transfer()
145 	ret = edp_msg_fifo_tx(aux, msg);  in edp_aux_transfer()
165 			ret = edp_msg_fifo_rx(aux, msg);  in edp_aux_transfer()
170 		msg->reply = native ?  in edp_aux_transfer()
174 		msg->reply = native ?  in edp_aux_transfer()
184 	ret = msg->size;  in edp_aux_transfer()