media: hantro: add support for STM32MP25 VDEC

Add support for STM32MP25 VDEC video hardware decoder.
Support of H264/VP8 decoding.
No post-processor support.
VDEC has its own reset/clock/irq.

Successfully tested up to full HD.

Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hugues Fruchet <hugues.fruchet@foss.st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

5 files changed, 114 insertions, 3 deletions

diff --git a/drivers/media/platform/verisilicon/Kconfig b/drivers/media/platform/verisilicon/Kconfig
index 24b927d8f182e2..9a34d14c6e4043 100644
--- a/drivers/media/platform/verisilicon/Kconfig
+++ b/drivers/media/platform/verisilicon/Kconfig
@@ -4,7 +4,7 @@ comment "Verisilicon media platform drivers"
 
 config VIDEO_HANTRO
 	tristate "Hantro VPU driver"
-	depends on ARCH_MXC || ARCH_ROCKCHIP || ARCH_AT91 || ARCH_SUNXI || COMPILE_TEST
+	depends on ARCH_MXC || ARCH_ROCKCHIP || ARCH_AT91 || ARCH_SUNXI || ARCH_STM32 || COMPILE_TEST
 	depends on V4L_MEM2MEM_DRIVERS
 	depends on VIDEO_DEV
 	select MEDIA_CONTROLLER
@@ -15,8 +15,8 @@ config VIDEO_HANTRO
 	select V4L2_VP9
 	help
 	  Support for the Hantro IP based Video Processing Units present on
-	  Rockchip and NXP i.MX8M SoCs, which accelerate video and image
-	  encoding and decoding.
+	  Rockchip, NXP i.MX8M and STM32MP25 SoCs, which accelerate video
+	  and image encoding and decoding.
 	  To compile this driver as a module, choose M here: the module
 	  will be called hantro-vpu.
 
@@ -51,3 +51,11 @@ config VIDEO_HANTRO_SUNXI
 	default y
 	help
 	  Enable support for H6 SoC.
+
+config VIDEO_HANTRO_STM32MP25
+	bool "Hantro STM32MP25 support"
+	depends on VIDEO_HANTRO
+	depends on ARCH_STM32 || COMPILE_TEST
+	default y
+	help
+	  Enable support for STM32MP25 SoCs.
diff --git a/drivers/media/platform/verisilicon/Makefile b/drivers/media/platform/verisilicon/Makefile
index 6ad2ef885920be..eb38a1833b02fa 100644
--- a/drivers/media/platform/verisilicon/Makefile
+++ b/drivers/media/platform/verisilicon/Makefile
@@ -39,3 +39,6 @@ hantro-vpu-$(CONFIG_VIDEO_HANTRO_ROCKCHIP) += \
 
 hantro-vpu-$(CONFIG_VIDEO_HANTRO_SUNXI) += \
 		sunxi_vpu_hw.o
+
+hantro-vpu-$(CONFIG_VIDEO_HANTRO_STM32MP25) += \
+		stm32mp25_vpu_hw.o
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index db3df6cc4513be..fe8e2240324cb6 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -736,6 +736,9 @@ static const struct of_device_id of_hantro_match[] = {
 #ifdef CONFIG_VIDEO_HANTRO_SUNXI
 	{ .compatible = "allwinner,sun50i-h6-vpu-g2", .data = &sunxi_vpu_variant, },
 #endif
+#ifdef CONFIG_VIDEO_HANTRO_STM32MP25
+	{ .compatible = "st,stm32mp25-vdec", .data = &stm32mp25_vdec_variant, },
+#endif
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, of_hantro_match);
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 9aec8a79acdca4..0b4806f6763097 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -408,6 +408,7 @@ extern const struct hantro_variant rk3568_vpu_variant;
 extern const struct hantro_variant rk3588_vpu981_variant;
 extern const struct hantro_variant sama5d4_vdec_variant;
 extern const struct hantro_variant sunxi_vpu_variant;
+extern const struct hantro_variant stm32mp25_vdec_variant;
 
 extern const struct hantro_postproc_ops hantro_g1_postproc_ops;
 extern const struct hantro_postproc_ops hantro_g2_postproc_ops;
diff --git a/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c b/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c
new file mode 100644
index 00000000000000..6af6edcb66503e
--- /dev/null
+++ b/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * STM32MP25 video codec driver
+ *
+ * Copyright (C) STMicroelectronics SA 2024
+ * Authors: Hugues Fruchet <hugues.fruchet@foss.st.com>
+ *          for STMicroelectronics.
+ *
+ */
+
+#include "hantro.h"
+
+/*
+ * Supported formats.
+ */
+
+static const struct hantro_fmt stm32mp25_vdec_fmts[] = {
+	{
+		.fourcc = V4L2_PIX_FMT_NV12,
+		.codec_mode = HANTRO_MODE_NONE,
+		.frmsize = {
+			.min_width = FMT_MIN_WIDTH,
+			.max_width = FMT_FHD_WIDTH,
+			.step_width = MB_DIM,
+			.min_height = FMT_MIN_HEIGHT,
+			.max_height = FMT_FHD_HEIGHT,
+			.step_height = MB_DIM,
+		},
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_VP8_FRAME,
+		.codec_mode = HANTRO_MODE_VP8_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = FMT_MIN_WIDTH,
+			.max_width = FMT_FHD_WIDTH,
+			.step_width = MB_DIM,
+			.min_height = FMT_MIN_HEIGHT,
+			.max_height = FMT_FHD_HEIGHT,
+			.step_height = MB_DIM,
+		},
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_H264_SLICE,
+		.codec_mode = HANTRO_MODE_H264_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = FMT_MIN_WIDTH,
+			.max_width = FMT_FHD_WIDTH,
+			.step_width = MB_DIM,
+			.min_height = FMT_MIN_HEIGHT,
+			.max_height = FMT_FHD_HEIGHT,
+			.step_height = MB_DIM,
+		},
+	},
+};
+
+/*
+ * Supported codec ops.
+ */
+
+static const struct hantro_codec_ops stm32mp25_vdec_codec_ops[] = {
+	[HANTRO_MODE_VP8_DEC] = {
+		.run = hantro_g1_vp8_dec_run,
+		.reset = hantro_g1_reset,
+		.init = hantro_vp8_dec_init,
+		.exit = hantro_vp8_dec_exit,
+	},
+	[HANTRO_MODE_H264_DEC] = {
+		.run = hantro_g1_h264_dec_run,
+		.reset = hantro_g1_reset,
+		.init = hantro_h264_dec_init,
+		.exit = hantro_h264_dec_exit,
+	},
+};
+
+/*
+ * Variants.
+ */
+
+static const struct hantro_irq stm32mp25_vdec_irqs[] = {
+	{ "vdec", hantro_g1_irq },
+};
+
+static const char * const stm32mp25_vdec_clk_names[] = { "vdec-clk" };
+
+const struct hantro_variant stm32mp25_vdec_variant = {
+	.dec_fmts = stm32mp25_vdec_fmts,
+	.num_dec_fmts = ARRAY_SIZE(stm32mp25_vdec_fmts),
+	.codec = HANTRO_VP8_DECODER | HANTRO_H264_DECODER,
+	.codec_ops = stm32mp25_vdec_codec_ops,
+	.irqs = stm32mp25_vdec_irqs,
+	.num_irqs = ARRAY_SIZE(stm32mp25_vdec_irqs),
+	.clk_names = stm32mp25_vdec_clk_names,
+	.num_clocks = ARRAY_SIZE(stm32mp25_vdec_clk_names),
+};