73 static bool mpfs_mbox_busy(struct mpfs_mbox *mbox)  in mpfs_mbox_busy()  argument
77 	status = readl_relaxed(mbox->ctrl_base + SERVICES_SR_OFFSET);  in mpfs_mbox_busy()
84 	struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv;  in mpfs_mbox_send_data()  local
90 	mbox->response = msg->response;  in mpfs_mbox_send_data()
91 	mbox->resp_offset = msg->resp_offset;  in mpfs_mbox_send_data()
93 	if (mpfs_mbox_busy(mbox))  in mpfs_mbox_send_data()
103 				       mbox->mbox_base + msg->mbox_offset + index * 0x4);  in mpfs_mbox_send_data()
109 			val = readl_relaxed(mbox->mbox_base + msg->mbox_offset + index * 0x4);  in mpfs_mbox_send_data()
116 			writel_relaxed(val, mbox->mbox_base + msg->mbox_offset + index * 0x4);  in mpfs_mbox_send_data()
123 	writel_relaxed(tx_trigger, mbox->ctrl_base + SERVICES_CR_OFFSET);  in mpfs_mbox_send_data()
130 	struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv;  in mpfs_mbox_rx_data()  local
131 	struct mpfs_mss_response *response = mbox->response;  in mpfs_mbox_rx_data()
136 		dev_err(mbox->dev, "failed to assign memory for response %d\n", -ENOMEM);  in mpfs_mbox_rx_data()
140 	if (!mpfs_mbox_busy(mbox)) {  in mpfs_mbox_rx_data()
143 				readl_relaxed(mbox->mbox_base  in mpfs_mbox_rx_data()
144 					      + mbox->resp_offset + i * 0x4);  in mpfs_mbox_rx_data()
154 	struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv;  in mpfs_mbox_inbox_isr()  local
156 	writel_relaxed(0, mbox->int_reg);  in mpfs_mbox_inbox_isr()
166 	struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv;  in mpfs_mbox_startup()  local
169 	if (!mbox)  in mpfs_mbox_startup()
172 	ret = devm_request_irq(mbox->dev, mbox->irq, mpfs_mbox_inbox_isr, 0, "mpfs-mailbox", chan);  in mpfs_mbox_startup()
174 		dev_err(mbox->dev, "failed to register mailbox interrupt:%d\n", ret);  in mpfs_mbox_startup()
181 	struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv;  in mpfs_mbox_shutdown()  local
183 	devm_free_irq(mbox->dev, mbox->irq, chan);  in mpfs_mbox_shutdown()
194 	struct mpfs_mbox *mbox;  in mpfs_mbox_probe()  local
198 	mbox = devm_kzalloc(&pdev->dev, sizeof(*mbox), GFP_KERNEL);  in mpfs_mbox_probe()
199 	if (!mbox)  in mpfs_mbox_probe()
202 	mbox->ctrl_base = devm_platform_get_and_ioremap_resource(pdev, 0, &regs);  in mpfs_mbox_probe()
203 	if (IS_ERR(mbox->ctrl_base))  in mpfs_mbox_probe()
204 		return PTR_ERR(mbox->ctrl_base);  in mpfs_mbox_probe()
206 	mbox->int_reg = devm_platform_get_and_ioremap_resource(pdev, 1, &regs);  in mpfs_mbox_probe()
207 	if (IS_ERR(mbox->int_reg))  in mpfs_mbox_probe()
208 		return PTR_ERR(mbox->int_reg);  in mpfs_mbox_probe()
210 	mbox->mbox_base = devm_platform_get_and_ioremap_resource(pdev, 2, &regs);  in mpfs_mbox_probe()
211 	if (IS_ERR(mbox->mbox_base)) // account for the old dt-binding w/ 2 regs  in mpfs_mbox_probe()
212 		mbox->mbox_base = mbox->ctrl_base + MAILBOX_REG_OFFSET;  in mpfs_mbox_probe()
214 	mbox->irq = platform_get_irq(pdev, 0);  in mpfs_mbox_probe()
215 	if (mbox->irq < 0)  in mpfs_mbox_probe()
216 		return mbox->irq;  in mpfs_mbox_probe()
218 	mbox->dev = &pdev->dev;  in mpfs_mbox_probe()
220 	mbox->chans[0].con_priv = mbox;  in mpfs_mbox_probe()
221 	mbox->controller.dev = mbox->dev;  in mpfs_mbox_probe()
222 	mbox->controller.num_chans = 1;  in mpfs_mbox_probe()
223 	mbox->controller.chans = mbox->chans;  in mpfs_mbox_probe()
224 	mbox->controller.ops = &mpfs_mbox_ops;  in mpfs_mbox_probe()
225 	mbox->controller.txdone_irq = true;  in mpfs_mbox_probe()
227 	ret = devm_mbox_controller_register(&pdev->dev, &mbox->controller);  in mpfs_mbox_probe()