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.gaign...@collabora.com>
Reviewed-by: Philipp Zabel <p.za...@pengutronix.de>
Reviewed-by: Ezequiel Garcia <ezequ...@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

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