1 // SPDX-License-Identifier: GPL-2.0
4  * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
19 	struct mbox_controller mbox;  member
31 static inline struct mtk_adsp_mbox_priv *get_mtk_adsp_mbox_priv(struct mbox_controller *mbox)  in get_mtk_adsp_mbox_priv()  argument
33 	return container_of(mbox, struct mtk_adsp_mbox_priv, mbox);  in get_mtk_adsp_mbox_priv()
39 	struct mtk_adsp_mbox_priv *priv = get_mtk_adsp_mbox_priv(chan->mbox);  in mtk_adsp_mbox_irq()
40 	u32 op = readl(priv->va_mboxreg + priv->cfg->set_out);  in mtk_adsp_mbox_irq()
42 	writel(op, priv->va_mboxreg + priv->cfg->clr_out);  in mtk_adsp_mbox_irq()
56 static struct mbox_chan *mtk_adsp_mbox_xlate(struct mbox_controller *mbox,  in mtk_adsp_mbox_xlate()  argument
59 	return mbox->chans;  in mtk_adsp_mbox_xlate()
64 	struct mtk_adsp_mbox_priv *priv = get_mtk_adsp_mbox_priv(chan->mbox);  in mtk_adsp_mbox_startup()
66 	/* Clear ADSP mbox command */  in mtk_adsp_mbox_startup()
67 	writel(0xFFFFFFFF, priv->va_mboxreg + priv->cfg->clr_in);  in mtk_adsp_mbox_startup()
68 	writel(0xFFFFFFFF, priv->va_mboxreg + priv->cfg->clr_out);  in mtk_adsp_mbox_startup()
75 	struct mtk_adsp_mbox_priv *priv = get_mtk_adsp_mbox_priv(chan->mbox);  in mtk_adsp_mbox_shutdown()
77 	/* Clear ADSP mbox command */  in mtk_adsp_mbox_shutdown()
78 	writel(0xFFFFFFFF, priv->va_mboxreg + priv->cfg->clr_in);  in mtk_adsp_mbox_shutdown()
79 	writel(0xFFFFFFFF, priv->va_mboxreg + priv->cfg->clr_out);  in mtk_adsp_mbox_shutdown()
84 	struct mtk_adsp_mbox_priv *priv = get_mtk_adsp_mbox_priv(chan->mbox);  in mtk_adsp_mbox_send_data()
87 	writel(*msg, priv->va_mboxreg + priv->cfg->set_in);  in mtk_adsp_mbox_send_data()
94 	struct mtk_adsp_mbox_priv *priv = get_mtk_adsp_mbox_priv(chan->mbox);  in mtk_adsp_mbox_last_tx_done()
96 	return readl(priv->va_mboxreg + priv->cfg->set_in) == 0;  in mtk_adsp_mbox_last_tx_done()
108 	struct device *dev = &pdev->dev;  in mtk_adsp_mbox_probe()
111 	struct mbox_controller *mbox;  in mtk_adsp_mbox_probe()  local
116 		return -ENOMEM;  in mtk_adsp_mbox_probe()
118 	mbox = &priv->mbox;  in mtk_adsp_mbox_probe()
119 	mbox->dev = dev;  in mtk_adsp_mbox_probe()
120 	mbox->ops = &mtk_adsp_mbox_chan_ops;  in mtk_adsp_mbox_probe()
121 	mbox->txdone_irq = false;  in mtk_adsp_mbox_probe()
122 	mbox->txdone_poll = true;  in mtk_adsp_mbox_probe()
123 	mbox->of_xlate = mtk_adsp_mbox_xlate;  in mtk_adsp_mbox_probe()
124 	mbox->num_chans = 1;  in mtk_adsp_mbox_probe()
125 	mbox->chans = devm_kzalloc(dev, sizeof(*mbox->chans), GFP_KERNEL);  in mtk_adsp_mbox_probe()
126 	if (!mbox->chans)  in mtk_adsp_mbox_probe()
127 		return -ENOMEM;  in mtk_adsp_mbox_probe()
129 	priv->va_mboxreg = devm_platform_ioremap_resource(pdev, 0);  in mtk_adsp_mbox_probe()
130 	if (IS_ERR(priv->va_mboxreg))  in mtk_adsp_mbox_probe()
131 		return PTR_ERR(priv->va_mboxreg);  in mtk_adsp_mbox_probe()
135 		return -EINVAL;  in mtk_adsp_mbox_probe()
136 	priv->cfg = cfg;  in mtk_adsp_mbox_probe()
144 					dev_name(dev), mbox->chans);  in mtk_adsp_mbox_probe()
150 	return devm_mbox_controller_register(dev, &priv->mbox);  in mtk_adsp_mbox_probe()
168 	{ .compatible = "mediatek,mt8186-adsp-mbox", .data = &mt8186_adsp_mbox_cfg },
169 	{ .compatible = "mediatek,mt8195-adsp-mbox", .data = &mt8195_adsp_mbox_cfg },
177 		.name	= "mtk_adsp_mbox",
183 MODULE_AUTHOR("Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>");