[PATCH v2 7/9] mailbox: mediatek: Add secure CMDQ driver support for CMDQ driver

[Jason-JH.Lin]

CMDQ driver will probe a secure CMDQ driver when has_sec flag
in platform data is true and its device node in dts has defined a
event id of CMDQ_SYNC_TOKEN_SEC_EOF.

Secure CMDQ driver support on mt8188 and mt8195 currently.
So add a has_sec flag to their driver data to probe it.

Signed-off-by: Jason-JH.Lin <jason-jh.lin at mediatek.com>
---
 drivers/mailbox/mtk-cmdq-mailbox.c       | 42 ++++++++++++++++++++++--
 include/linux/mailbox/mtk-cmdq-mailbox.h | 11 +++++++
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index 3bdfb9a60614..4db5eb76f353 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -87,6 +87,7 @@ struct gce_plat {
 	u8 shift;
 	bool control_by_sw;
 	bool sw_ddr_en;
+	bool has_sec;
 	u32 gce_num;
 };
 
@@ -560,14 +561,23 @@ static int cmdq_probe(struct platform_device *pdev)
 	int alias_id = 0;
 	static const char * const clk_name = "gce";
 	static const char * const clk_names[] = { "gce0", "gce1" };
+	struct resource *res;
+	struct platform_device *mtk_cmdq_sec;
+	u32 hwid = 0;
 
 	cmdq = devm_kzalloc(dev, sizeof(*cmdq), GFP_KERNEL);
 	if (!cmdq)
 		return -ENOMEM;
 
-	cmdq->base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(cmdq->base))
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -EINVAL;
+
+	cmdq->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(cmdq->base)) {
+		dev_err(dev, "failed to ioremap cmdq\n");
 		return PTR_ERR(cmdq->base);
+	}
 
 	cmdq->irq = platform_get_irq(pdev, 0);
 	if (cmdq->irq < 0)
@@ -585,6 +595,8 @@ static int cmdq_probe(struct platform_device *pdev)
 		dev, cmdq->base, cmdq->irq);
 
 	if (cmdq->pdata->gce_num > 1) {
+		hwid = of_alias_get_id(dev->of_node, clk_name);
+
 		for_each_child_of_node(phandle->parent, node) {
 			alias_id = of_alias_get_id(node, clk_name);
 			if (alias_id >= 0 && alias_id < cmdq->pdata->gce_num) {
@@ -653,6 +665,30 @@ static int cmdq_probe(struct platform_device *pdev)
 		return err;
 	}
 
+	if (cmdq->pdata->has_sec) {
+		struct cmdq_sec_plat gce_sec_plat;
+
+		if (of_property_read_u32_index(dev->of_node, "mediatek,gce-events", 0,
+					       &gce_sec_plat.cmdq_event) == 0) {
+			gce_sec_plat.gce_dev = dev;
+			gce_sec_plat.base = cmdq->base;
+			gce_sec_plat.base_pa = res->start;
+			gce_sec_plat.hwid = hwid;
+			gce_sec_plat.gce_num = cmdq->pdata->gce_num;
+			gce_sec_plat.clocks = cmdq->clocks;
+			gce_sec_plat.thread_nr = cmdq->pdata->thread_nr;
+
+			mtk_cmdq_sec = platform_device_register_data(dev, "mtk_cmdq_sec",
+								     PLATFORM_DEVID_AUTO,
+								     &gce_sec_plat,
+								     sizeof(gce_sec_plat));
+			if (IS_ERR(mtk_cmdq_sec)) {
+				dev_err(dev, "failed to register platform_device mtk_cmdq_sec\n");
+				return PTR_ERR(mtk_cmdq_sec);
+			}
+		}
+	}
+
 	return 0;
 }
 
@@ -693,6 +729,7 @@ static const struct gce_plat gce_plat_v6 = {
 	.thread_nr = 24,
 	.shift = 3,
 	.control_by_sw = true,
+	.has_sec = true,
 	.gce_num = 2
 };
 
@@ -708,6 +745,7 @@ static const struct gce_plat gce_plat_v8 = {
 	.thread_nr = 32,
 	.shift = 3,
 	.control_by_sw = true,
+	.has_sec = true,
 	.gce_num = 2
 };
 
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
index f78a08e7c6ed..fdda995a69ce 100644
--- a/include/linux/mailbox/mtk-cmdq-mailbox.h
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -79,6 +79,17 @@ struct cmdq_pkt {
 	bool			loop;
 };
 
+struct cmdq_sec_plat {
+	struct device *gce_dev;
+	void __iomem *base;
+	dma_addr_t base_pa;
+	u32 hwid;
+	u32 gce_num;
+	struct clk_bulk_data *clocks;
+	u32 thread_nr;
+	u32 cmdq_event;
+};
+
 u8 cmdq_get_shift_pa(struct mbox_chan *chan);
 
 #endif /* __MTK_CMDQ_MAILBOX_H__ */
-- 
2.18.0