[PATCH v9 12/13] media: hantro: IMX8M: add variant for G2/HEVC codec

[Benjamin Gaignard]

Add variant to IMX8M to enable G2/HEVC codec.
Define the capabilities for the hardware up to 3840x2160.
G2 doesn't have a postprocessor, uses the same clocks and has it
own interrupt.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard at collabora.com>
Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>
Reviewed-by: Ezequiel Garcia <ezequiel at collabora.com>
---
version 9:
 - Corrections in commit message

version 8:
 - Add Ezequiel Reviewed-by tag.

version 7:
 - Add Philipp Reviewed-by tag.

version 5:
 - remove useless postproc fields for G2

version 2:
- remove useless clocks

 drivers/staging/media/hantro/hantro_drv.c   |  1 +
 drivers/staging/media/hantro/hantro_hw.h    |  1 +
 drivers/staging/media/hantro/imx8m_vpu_hw.c | 76 ++++++++++++++++++++-
 3 files changed, 76 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
index 905a69758b37..d6f4958f6292 100644
--- a/drivers/staging/media/hantro/hantro_drv.c
+++ b/drivers/staging/media/hantro/hantro_drv.c
@@ -574,6 +574,7 @@ static const struct of_device_id of_hantro_match[] = {
 #endif
 #ifdef CONFIG_VIDEO_HANTRO_IMX8M
 	{ .compatible = "nxp,imx8mq-vpu", .data = &imx8mq_vpu_variant, },
+	{ .compatible = "nxp,imx8mq-vpu-g2", .data = &imx8mq_vpu_g2_variant },
 #endif
 	{ /* sentinel */ }
 };
diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h
index 41f3d5b92357..682fea1fe914 100644
--- a/drivers/staging/media/hantro/hantro_hw.h
+++ b/drivers/staging/media/hantro/hantro_hw.h
@@ -205,6 +205,7 @@ extern const struct hantro_variant rk3399_vpu_variant;
 extern const struct hantro_variant rk3328_vpu_variant;
 extern const struct hantro_variant rk3288_vpu_variant;
 extern const struct hantro_variant imx8mq_vpu_variant;
+extern const struct hantro_variant imx8mq_vpu_g2_variant;
 
 extern const struct hantro_postproc_regs hantro_g1_postproc_regs;
 
diff --git a/drivers/staging/media/hantro/imx8m_vpu_hw.c b/drivers/staging/media/hantro/imx8m_vpu_hw.c
index 8d0c3425234b..6de43e0edc36 100644
--- a/drivers/staging/media/hantro/imx8m_vpu_hw.c
+++ b/drivers/staging/media/hantro/imx8m_vpu_hw.c
@@ -12,6 +12,7 @@
 #include "hantro.h"
 #include "hantro_jpeg.h"
 #include "hantro_g1_regs.h"
+#include "hantro_g2_regs.h"
 
 #define CTRL_SOFT_RESET		0x00
 #define RESET_G1		BIT(1)
@@ -129,6 +130,26 @@ static const struct hantro_fmt imx8m_vpu_dec_fmts[] = {
 	},
 };
 
+static const struct hantro_fmt imx8m_vpu_g2_dec_fmts[] = {
+	{
+		.fourcc = V4L2_PIX_FMT_NV12,
+		.codec_mode = HANTRO_MODE_NONE,
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_HEVC_SLICE,
+		.codec_mode = HANTRO_MODE_HEVC_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = 48,
+			.max_width = 3840,
+			.step_width = MB_DIM,
+			.min_height = 48,
+			.max_height = 2160,
+			.step_height = MB_DIM,
+		},
+	},
+};
+
 static irqreturn_t imx8m_vpu_g1_irq(int irq, void *dev_id)
 {
 	struct hantro_dev *vpu = dev_id;
@@ -147,6 +168,24 @@ static irqreturn_t imx8m_vpu_g1_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static irqreturn_t imx8m_vpu_g2_irq(int irq, void *dev_id)
+{
+	struct hantro_dev *vpu = dev_id;
+	enum vb2_buffer_state state;
+	u32 status;
+
+	status = vdpu_read(vpu, HEVC_REG_INTERRUPT);
+	state = (status & HEVC_REG_INTERRUPT_DEC_RDY_INT) ?
+		 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
+
+	vdpu_write(vpu, 0, HEVC_REG_INTERRUPT);
+	vdpu_write(vpu, HEVC_REG_CONFIG_DEC_CLK_GATE_E, HEVC_REG_CONFIG);
+
+	hantro_irq_done(vpu, state);
+
+	return IRQ_HANDLED;
+}
+
 static int imx8mq_vpu_hw_init(struct hantro_dev *vpu)
 {
 	struct device_node *np = vpu->dev->of_node;
@@ -176,6 +215,13 @@ static void imx8m_vpu_g1_reset(struct hantro_ctx *ctx)
 	imx8m_soft_reset(vpu, RESET_G1);
 }
 
+static void imx8m_vpu_g2_reset(struct hantro_ctx *ctx)
+{
+	struct hantro_dev *vpu = ctx->dev;
+
+	imx8m_soft_reset(vpu, RESET_G2);
+}
+
 /*
  * Supported codec ops.
  */
@@ -201,16 +247,28 @@ static const struct hantro_codec_ops imx8mq_vpu_codec_ops[] = {
 	},
 };
 
+static const struct hantro_codec_ops imx8mq_vpu_g2_codec_ops[] = {
+	[HANTRO_MODE_HEVC_DEC] = {
+		.run = hantro_g2_hevc_dec_run,
+		.reset = imx8m_vpu_g2_reset,
+		.init = hantro_hevc_dec_init,
+		.exit = hantro_hevc_dec_exit,
+	},
+};
+
 /*
  * VPU variants.
  */
 
 static const struct hantro_irq imx8mq_irqs[] = {
 	{ "g1", imx8m_vpu_g1_irq },
-	{ "g2", NULL /* TODO: imx8m_vpu_g2_irq */ },
 };
 
-static const char * const imx8mq_clk_names[] = { "g1", "g2", "bus" };
+static const struct hantro_irq imx8mq_g2_irqs[] = {
+	{ "g2", imx8m_vpu_g2_irq },
+};
+
+static const char * const imx8mq_clk_names[] = { "g1", "g2", "bus"};
 
 const struct hantro_variant imx8mq_vpu_variant = {
 	.dec_fmts = imx8m_vpu_dec_fmts,
@@ -228,3 +286,17 @@ const struct hantro_variant imx8mq_vpu_variant = {
 	.clk_names = imx8mq_clk_names,
 	.num_clocks = ARRAY_SIZE(imx8mq_clk_names),
 };
+
+const struct hantro_variant imx8mq_vpu_g2_variant = {
+	.dec_offset = 0x0,
+	.dec_fmts = imx8m_vpu_g2_dec_fmts,
+	.num_dec_fmts = ARRAY_SIZE(imx8m_vpu_g2_dec_fmts),
+	.codec = HANTRO_HEVC_DECODER,
+	.codec_ops = imx8mq_vpu_g2_codec_ops,
+	.init = imx8mq_vpu_hw_init,
+	.runtime_resume = imx8mq_runtime_resume,
+	.irqs = imx8mq_g2_irqs,
+	.num_irqs = ARRAY_SIZE(imx8mq_g2_irqs),
+	.clk_names = imx8mq_clk_names,
+	.num_clocks = ARRAY_SIZE(imx8mq_clk_names),
+};
-- 
2.25.1