68 static void mb_chan_send_msg(struct slimpro_mbox_chan *mb_chan, u32 *msg)  in mb_chan_send_msg()  argument
70 	writel(msg[1], mb_chan->reg + REG_DB_DOUT0);  in mb_chan_send_msg()
71 	writel(msg[2], mb_chan->reg + REG_DB_DOUT1);  in mb_chan_send_msg()
72 	writel(msg[0], mb_chan->reg + REG_DB_OUT);  in mb_chan_send_msg()
75 static void mb_chan_recv_msg(struct slimpro_mbox_chan *mb_chan)  in mb_chan_recv_msg()  argument
77 	mb_chan->rx_msg[1] = readl(mb_chan->reg + REG_DB_DIN0);  in mb_chan_recv_msg()
78 	mb_chan->rx_msg[2] = readl(mb_chan->reg + REG_DB_DIN1);  in mb_chan_recv_msg()
79 	mb_chan->rx_msg[0] = readl(mb_chan->reg + REG_DB_IN);  in mb_chan_recv_msg()
82 static int mb_chan_status_ack(struct slimpro_mbox_chan *mb_chan)  in mb_chan_status_ack()  argument
84 	u32 val = readl(mb_chan->reg + REG_DB_STAT);  in mb_chan_status_ack()
87 		writel(MBOX_STATUS_ACK_MASK, mb_chan->reg + REG_DB_STAT);  in mb_chan_status_ack()
93 static int mb_chan_status_avail(struct slimpro_mbox_chan *mb_chan)  in mb_chan_status_avail()  argument
95 	u32 val = readl(mb_chan->reg + REG_DB_STAT);  in mb_chan_status_avail()
98 		mb_chan_recv_msg(mb_chan);  in mb_chan_status_avail()
99 		writel(MBOX_STATUS_AVAIL_MASK, mb_chan->reg + REG_DB_STAT);  in mb_chan_status_avail()
107 	struct slimpro_mbox_chan *mb_chan = id;  in slimpro_mbox_irq()  local
109 	if (mb_chan_status_ack(mb_chan))  in slimpro_mbox_irq()
110 		mbox_chan_txdone(mb_chan->chan, 0);  in slimpro_mbox_irq()
112 	if (mb_chan_status_avail(mb_chan))  in slimpro_mbox_irq()
113 		mbox_chan_received_data(mb_chan->chan, mb_chan->rx_msg);  in slimpro_mbox_irq()
120 	struct slimpro_mbox_chan *mb_chan = chan->con_priv;  in slimpro_mbox_send_data()  local
122 	mb_chan_send_msg(mb_chan, msg);  in slimpro_mbox_send_data()
128 	struct slimpro_mbox_chan *mb_chan = chan->con_priv;  in slimpro_mbox_startup()  local
132 	rc = devm_request_irq(mb_chan->dev, mb_chan->irq, slimpro_mbox_irq, 0,  in slimpro_mbox_startup()
133 			      MBOX_CON_NAME, mb_chan);  in slimpro_mbox_startup()
135 		dev_err(mb_chan->dev, "failed to register mailbox interrupt %d\n",  in slimpro_mbox_startup()
136 			mb_chan->irq);  in slimpro_mbox_startup()
142 	       mb_chan->reg + REG_DB_STAT);  in slimpro_mbox_startup()
144 	val = readl(mb_chan->reg + REG_DB_STATMASK);  in slimpro_mbox_startup()
146 	writel(val, mb_chan->reg + REG_DB_STATMASK);  in slimpro_mbox_startup()
153 	struct slimpro_mbox_chan *mb_chan = chan->con_priv;  in slimpro_mbox_shutdown()  local
157 	val = readl(mb_chan->reg + REG_DB_STATMASK);  in slimpro_mbox_shutdown()
159 	writel(val, mb_chan->reg + REG_DB_STATMASK);  in slimpro_mbox_shutdown()
161 	devm_free_irq(mb_chan->dev, mb_chan->irq, mb_chan);  in slimpro_mbox_shutdown()