[PATCH 02/10] media: mtk-vcodec: add SCP firmware ops

Alexandre Courbot
2020-05-20T08:28:03Z

From: Yunfei Dong <yunfei.dong@mediatek.com>

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

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
[acourbot: refactor, cleanup and split]
Co-developed-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
---
drivers/media/platform/Kconfig | 2 +
.../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 | 56 +++++++++++++++++++
.../media/platform/mtk-vcodec/mtk_vcodec_fw.h | 2 +
5 files changed, 66 insertions(+)

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index c57ee78fa99d..9b11dd6b1ef3 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -256,6 +256,8 @@ config VIDEO_MEDIATEK_VCODEC
select VIDEOBUF2_DMA_CONTIG
select V4L2_MEM2MEM_DEV
select VIDEO_MEDIATEK_VPU
+ select MTK_SCP
+ default n
help
Mediatek video codec driver provides HW capability to
encode and decode in a range of video formats
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 4f07a5fcce7f..5b5765b98e57 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -225,6 +225,9 @@ 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 4340ea10afd0..42530cd01a30 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
@@ -233,6 +233,9 @@ 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 venc 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 967bb100a990..f2a62ea62fc6 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
@@ -19,6 +19,7 @@ struct mtk_vcodec_fw {
enum mtk_vcodec_fw_type type;
const struct mtk_vcodec_fw_ops *ops;
struct platform_device *pdev;
+ struct mtk_scp *scp;
};

static int mtk_vcodec_vpu_load_firmware(struct mtk_vcodec_fw *fw)
@@ -71,6 +72,48 @@ 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(scp_get_rproc(fw->scp));
+}
+
+static unsigned int mtk_vcodec_scp_get_vdec_capa(struct mtk_vcodec_fw *fw)
+{
+ return scp_get_vdec_hw_capa(fw->scp);
+}
+
+static unsigned int mtk_vcodec_scp_get_venc_capa(struct mtk_vcodec_fw *fw)
+{
+ return scp_get_venc_hw_capa(fw->scp);
+}
+
+static void *mtk_vcodec_vpu_scp_dm_addr(struct mtk_vcodec_fw *fw,
+ u32 dtcm_dmem_addr)
+{
+ return scp_mapping_dm_addr(fw->scp, 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->scp, 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->scp, 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;
@@ -94,6 +137,7 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
const struct mtk_vcodec_fw_ops *ops;
struct mtk_vcodec_fw *fw;
struct platform_device *fw_pdev = NULL;
+ struct mtk_scp *scp = NULL;

switch (type) {
case VPU:
@@ -106,6 +150,14 @@ 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;
+ scp = scp_get(dev->plat_dev);
+ if (!scp) {
+ mtk_v4l2_err("could not get vdec scp handle");
+ return ERR_PTR(-EPROBE_DEFER);
+ }
+ break;
default:
mtk_v4l2_err("invalid vcodec fw type");
return ERR_PTR(-EINVAL);
@@ -118,6 +170,7 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
fw->type = type;
fw->ops = ops;
fw->pdev = fw_pdev;
+ fw->scp = scp;

return fw;
}
@@ -129,6 +182,9 @@ void mtk_vcodec_fw_release(struct mtk_vcodec_fw *fw)
case VPU:
put_device(&fw->pdev->dev);
break;
+ case SCP:
+ scp_put(fw->scp);
+ break;
}
}
EXPORT_SYMBOL_GPL(mtk_vcodec_fw_release);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.h
index ff25b0c19f74..ced1b6a10e07 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;
--
2.26.2.761.g0e0b3e54be-goog