[RFC PATCH v2 07/13] media: mtk-vcodec: add SCP firmware ops

[Alexandre Courbot]

From: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>

Add support for communicating with the SCP firmware, which will be used
by MT8183.

Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
[acourbot: refactor, cleanup and split]
Co-developed-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
---
 .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  |  3 ++
 .../platform/mtk-vcodec/mtk_vcodec_enc_drv.c  |  3 ++
 .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 51 +++++++++++++++++++
 .../media/platform/mtk-vcodec/mtk_vcodec_fw.h |  2 +
 4 files changed, 59 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index f6494f584354..53a9e016d989 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -226,6 +226,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 	if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu",
 				  &rproc_phandle)) {
 		fw_type = VPU;
+	} else if (!of_property_read_u32(pdev->dev.of_node, "mediatek,scp",
+					 &rproc_phandle)) {
+		fw_type = SCP;
 	} else {
 		mtk_v4l2_err("Could not get vdec IPI device");
 		return -ENODEV;
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
index 6a2ae909d36b..1f40dd780f30 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
@@ -234,6 +234,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 	if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu",
 				  &rproc_phandle)) {
 		fw_type = VPU;
+	} else if (!of_property_read_u32(pdev->dev.of_node, "mediatek,scp",
+					 &rproc_phandle)) {
+		fw_type = SCP;
 	} else {
 		mtk_v4l2_err("Could not get vdec IPI device");
 		return -ENODEV;
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
index a4361f57aedc..de22e16ad3a3 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
@@ -63,6 +63,48 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
 	.ipi_send = mtk_vcodec_vpu_ipi_send,
 };
 
+static int mtk_vcodec_scp_load_firmware(struct mtk_vcodec_fw *fw)
+{
+	return rproc_boot(fw->rproc);
+}
+
+static unsigned int mtk_vcodec_scp_get_vdec_capa(struct mtk_vcodec_fw *fw)
+{
+	return scp_get_vdec_hw_capa(fw->pdev);
+}
+
+static unsigned int mtk_vcodec_scp_get_venc_capa(struct mtk_vcodec_fw *fw)
+{
+	return scp_get_venc_hw_capa(fw->pdev);
+}
+
+static void *mtk_vcodec_vpu_scp_dm_addr(struct mtk_vcodec_fw *fw,
+					u32 dtcm_dmem_addr)
+{
+	return scp_mapping_dm_addr(fw->pdev, dtcm_dmem_addr);
+}
+
+static int mtk_vcodec_scp_set_ipi_register(struct mtk_vcodec_fw *fw, int id,
+		mtk_vcodec_ipi_handler handler, const char *name, void *priv)
+{
+	return scp_ipi_register(fw->pdev, id, handler, priv);
+}
+
+static int mtk_vcodec_scp_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
+		unsigned int len, unsigned int wait)
+{
+	return scp_ipi_send(fw->pdev, id, buf, len, wait);
+}
+
+static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
+	.load_firmware = mtk_vcodec_scp_load_firmware,
+	.get_vdec_capa = mtk_vcodec_scp_get_vdec_capa,
+	.get_venc_capa = mtk_vcodec_scp_get_venc_capa,
+	.map_dm_addr = mtk_vcodec_vpu_scp_dm_addr,
+	.ipi_register = mtk_vcodec_scp_set_ipi_register,
+	.ipi_send = mtk_vcodec_scp_ipi_send,
+};
+
 static void mtk_vcodec_reset_handler(void *priv)
 {
 	struct mtk_vcodec_dev *dev = priv;
@@ -96,6 +138,15 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
 		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_reset_handler,
 				    dev, rst_id);
 		break;
+	case SCP:
+		ops = &mtk_vcodec_rproc_msg;
+		fw_pdev = scp_get_pdev(dev->plat_dev);
+		rproc = rproc_get_by_phandle(rproc_phandle);
+		if (!rproc) {
+			mtk_v4l2_err("could not get vdec rproc handle");
+			return ERR_PTR(-EPROBE_DEFER);
+		}
+		break;
 	default:
 		mtk_v4l2_err("invalid vcodec fw type");
 		return ERR_PTR(-EINVAL);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.h
index a6edb3858e6e..c000bda70362 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.h
@@ -4,6 +4,7 @@
 #define _MTK_VCODEC_FW_H_
 
 #include <linux/remoteproc.h>
+#include <linux/remoteproc/mtk_scp.h>
 
 #include "../mtk-vpu/mtk_vpu.h"
 
@@ -11,6 +12,7 @@ struct mtk_vcodec_dev;
 
 enum mtk_vcodec_fw_type {
 	VPU,
+	SCP,
 };
 
 struct mtk_vcodec_fw;
-- 
2.23.0.187.g17f5b7556c-goog