44 #define mbox_dbg(mbox, ...)	dev_dbg((mbox)->controller.dev, __VA_ARGS__)  argument
58 	return chan - chan->mbox->chans;  in channel_number()
68 	struct sun6i_msgbox *mbox = dev_id;  in sun6i_msgbox_irq()  local
73 	status = readl(mbox->regs + LOCAL_IRQ_EN_REG) &  in sun6i_msgbox_irq()
74 		 readl(mbox->regs + LOCAL_IRQ_STAT_REG);  in sun6i_msgbox_irq()
80 		struct mbox_chan *chan = &mbox->controller.chans[n];  in sun6i_msgbox_irq()
86 			uint32_t msg = readl(mbox->regs + MSG_DATA_REG(n));  in sun6i_msgbox_irq()
88 			mbox_dbg(mbox, "Channel %d received 0x%08x\n", n, msg);  in sun6i_msgbox_irq()
93 		writel(RX_IRQ(n), mbox->regs + LOCAL_IRQ_STAT_REG);  in sun6i_msgbox_irq()
101 	struct sun6i_msgbox *mbox = to_sun6i_msgbox(chan);  in sun6i_msgbox_send_data()  local
106 	if (WARN_ON_ONCE(!(readl(mbox->regs + CTRL_REG(n)) & CTRL_TX(n))))  in sun6i_msgbox_send_data()
109 	writel(msg, mbox->regs + MSG_DATA_REG(n));  in sun6i_msgbox_send_data()
110 	mbox_dbg(mbox, "Channel %d sent 0x%08x\n", n, msg);  in sun6i_msgbox_send_data()
117 	struct sun6i_msgbox *mbox = to_sun6i_msgbox(chan);  in sun6i_msgbox_startup()  local
121 	if (readl(mbox->regs + CTRL_REG(n)) & CTRL_RX(n)) {  in sun6i_msgbox_startup()
124 			readl(mbox->regs + MSG_DATA_REG(n));  in sun6i_msgbox_startup()
125 		writel(RX_IRQ(n), mbox->regs + LOCAL_IRQ_STAT_REG);  in sun6i_msgbox_startup()
128 		spin_lock(&mbox->lock);  in sun6i_msgbox_startup()
129 		writel(readl(mbox->regs + LOCAL_IRQ_EN_REG) | RX_IRQ(n),  in sun6i_msgbox_startup()
130 		       mbox->regs + LOCAL_IRQ_EN_REG);  in sun6i_msgbox_startup()
131 		spin_unlock(&mbox->lock);  in sun6i_msgbox_startup()
134 	mbox_dbg(mbox, "Channel %d startup complete\n", n);  in sun6i_msgbox_startup()
141 	struct sun6i_msgbox *mbox = to_sun6i_msgbox(chan);  in sun6i_msgbox_shutdown()  local
144 	if (readl(mbox->regs + CTRL_REG(n)) & CTRL_RX(n)) {  in sun6i_msgbox_shutdown()
146 		spin_lock(&mbox->lock);  in sun6i_msgbox_shutdown()
147 		writel(readl(mbox->regs + LOCAL_IRQ_EN_REG) & ~RX_IRQ(n),  in sun6i_msgbox_shutdown()
148 		       mbox->regs + LOCAL_IRQ_EN_REG);  in sun6i_msgbox_shutdown()
149 		spin_unlock(&mbox->lock);  in sun6i_msgbox_shutdown()
154 				readl(mbox->regs + MSG_DATA_REG(n));  in sun6i_msgbox_shutdown()
155 			writel(RX_IRQ(n), mbox->regs + LOCAL_IRQ_STAT_REG);  in sun6i_msgbox_shutdown()
156 		} while (readl(mbox->regs + LOCAL_IRQ_STAT_REG) & RX_IRQ(n));  in sun6i_msgbox_shutdown()
159 	mbox_dbg(mbox, "Channel %d shutdown complete\n", n);  in sun6i_msgbox_shutdown()
164 	struct sun6i_msgbox *mbox = to_sun6i_msgbox(chan);  in sun6i_msgbox_last_tx_done()  local
176 	return !(readl(mbox->regs + REMOTE_IRQ_STAT_REG) & RX_IRQ(n));  in sun6i_msgbox_last_tx_done()
181 	struct sun6i_msgbox *mbox = to_sun6i_msgbox(chan);  in sun6i_msgbox_peek_data()  local
184 	return readl(mbox->regs + MSG_STAT_REG(n)) & MSG_STAT_MASK;  in sun6i_msgbox_peek_data()
200 	struct sun6i_msgbox *mbox;  in sun6i_msgbox_probe()  local
203 	mbox = devm_kzalloc(dev, sizeof(*mbox), GFP_KERNEL);  in sun6i_msgbox_probe()
204 	if (!mbox)  in sun6i_msgbox_probe()
212 		chans[i].con_priv = mbox;  in sun6i_msgbox_probe()
214 	mbox->clk = devm_clk_get(dev, NULL);  in sun6i_msgbox_probe()
215 	if (IS_ERR(mbox->clk)) {  in sun6i_msgbox_probe()
216 		ret = PTR_ERR(mbox->clk);  in sun6i_msgbox_probe()
221 	ret = clk_prepare_enable(mbox->clk);  in sun6i_msgbox_probe()
248 	mbox->regs = devm_platform_ioremap_resource(pdev, 0);  in sun6i_msgbox_probe()
249 	if (IS_ERR(mbox->regs)) {  in sun6i_msgbox_probe()
250 		ret = PTR_ERR(mbox->regs);  in sun6i_msgbox_probe()
256 	writel(0, mbox->regs + LOCAL_IRQ_EN_REG);  in sun6i_msgbox_probe()
259 			       sun6i_msgbox_irq, 0, dev_name(dev), mbox);  in sun6i_msgbox_probe()
265 	mbox->controller.dev           = dev;  in sun6i_msgbox_probe()
266 	mbox->controller.ops           = &sun6i_msgbox_chan_ops;  in sun6i_msgbox_probe()
267 	mbox->controller.chans         = chans;  in sun6i_msgbox_probe()
268 	mbox->controller.num_chans     = NUM_CHANS;  in sun6i_msgbox_probe()
269 	mbox->controller.txdone_irq    = false;  in sun6i_msgbox_probe()
270 	mbox->controller.txdone_poll   = true;  in sun6i_msgbox_probe()
271 	mbox->controller.txpoll_period = 5;  in sun6i_msgbox_probe()
273 	spin_lock_init(&mbox->lock);  in sun6i_msgbox_probe()
274 	platform_set_drvdata(pdev, mbox);  in sun6i_msgbox_probe()
276 	ret = mbox_controller_register(&mbox->controller);  in sun6i_msgbox_probe()
285 	clk_disable_unprepare(mbox->clk);  in sun6i_msgbox_probe()
292 	struct sun6i_msgbox *mbox = platform_get_drvdata(pdev);  in sun6i_msgbox_remove()  local
294 	mbox_controller_unregister(&mbox->controller);  in sun6i_msgbox_remove()
296 	clk_disable_unprepare(mbox->clk);  in sun6i_msgbox_remove()